公开(公告)号：US10753473B2

公开(公告)日：2020-08-25

申请号：US14813473

申请日：2015-07-30

Applicant: SUNDRAM FASTENERS LIMITED

Inventor： S. Sundar Sriram

IPC: F16H63/18 ,  B22F5/10 ,  B60K17/00 ,  B22F1/00 ,  B22F3/12 ,  B22F5/00 ,  C22C33/02 ,  B22F3/03 ,  F16H3/091

Abstract: The present disclosure generally relates to an article used in the manual transmission gearbox in automobiles. More particularly, it relates to an article used in manual transmission gearbox, namely the shifter dog, composition used for manufacturing the shifter dog and a method of manufacturing the shifter dog.

公开(公告)号：US20200166130A1

公开(公告)日：2020-05-28

申请号：US16514044

申请日：2019-07-17

Applicant: HYUNDAI MOTOR COMPANY ,  KIA MOTORS CORPORATION

Inventor： Sun Sung KWON ,  Soonki EO ,  Ma Ru KANG ,  Minho CHAE ,  Yong Uk SHIN ,  Chon Ok KIM

IPC: F16H63/30 ,  B60T1/00 ,  F16H53/02 ,  F16H53/06 ,  F16H63/34 ,  F16H63/18 ,  F16H63/32

Abstract: A gear shifting apparatus for a multi-speed transmission includes: a shifting unit controlling gear shifting by an actuator, and a parking unit controlling parking by the actuator. In particular, the actuator includes a control motor driving a driven gear through a drive gear externally gear-meshed with the driven gear, and the shifting and parking units are operated by a force received from a cam block fixed to the driven gear. The shifting unit includes a fork slider slidably mounted on a fork rail, a shift fork integrally formed with the fork slider, and a cam contact pin integrally formed with the fork slider and contacting the cam block.

公开(公告)号：US20190383363A1

公开(公告)日：2019-12-19

申请号：US16465060

申请日：2017-12-01

Applicant: Piaggio & C. S.P.A.

Inventor： Walter Mariotti ,  Luca Nuti

IPC: F16H3/093 ,  B62M7/06 ,  F16H7/02 ,  F16H63/18 ,  F16H63/30 ,  B62M11/06 ,  B62M25/08 ,  F16H37/04

Abstract: A synchronous transmission (1) for a motorcycle comprises a primary shaft (51) of mechanical gearbox, and a pair of secondary shafts (52, 53) equipped with one or more secondary gearwheels for transmitting the motion to a hub shaft (75), wherein a desmodromic drum (70) actuates a pair of coupling forks (67, 68) selectively defining the position of respective sliding couplings (65, 66) between primary (51) and secondary shafts (52, 53) to select all speeds of the transmission, the desmodromic drum (70) being in phase with a device (80) for actuating the gearwheels, and wherein the coupling forks (67, 68) are equipped with a cam follower end (69) maneuvered by said desmodromic drum (70) having a cylindrical surface (79) whereon a single desmodromic track (19) is formed.

公开(公告)号：US20190331219A1

公开(公告)日：2019-10-31

申请号：US16385024

申请日：2019-04-16

Applicant: KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Isamu SHIOTSU ,  Hirotsugu YOSHINO ,  Hideaki KOMADA ,  Yosuke SUZUKI

IPC: F16H63/18

Abstract: A shift mechanism switches power transmission paths among a first transmission shaft, a second transmission shaft, and a third transmission shaft that are concentrically arranged on a rotational axis. The shift mechanism has a drive drum that is provided so as to be coaxial with the rotational axis and pivotable about the rotational axis, and a first driven drum and a second driven drum that are arranged on the rotational axis so as to be concentric with the drive drum and move along the rotational axis as the drive drum pivots. As the first driven drum moves, a first shift sleeve advances and retreats, and the first transmission shaft and the second transmission shaft are connected and disconnected. In addition, as the second driven drum moves, a second shift sleeve advances and retreats, and the second transmission shaft and the third transmission shaft are connected and disconnected.

公开(公告)号：US20190309843A1

公开(公告)日：2019-10-10

申请号：US16371485

申请日：2019-04-01

Applicant: HONDA MOTOR CO., LTD.

Inventor： Eiji KITTAKA ,  Takashi KUDO

IPC: F16H61/32 ,  B60W20/30 ,  F16H63/18 ,  F16H57/02

Abstract: In a vehicle power unit, a drum rotary shaft member on one side of a shift drum is provided with a driven gear. A case side wall on one side of an engine crankcase supporting the drum rotary shaft member is covered by a case cover member in opposing relation thereto. A shift motor is mounted to the case cover member, with a driving gear thereof directed to protrude toward the case side wall. A speed reducing gear train has gear shafts and provides a multiplicity of speed reduction stages for transmitting power from the driving gear to the driven gear. The speed reducing gear train is arranged with both ends of its gear shafts thereof supported on the case side wall and the case cover member, respectively. Such arrangement provides a vehicle power unit for a fast and smooth shift by an electric motor.

公开(公告)号：US20190309827A1

公开(公告)日：2019-10-10

申请号：US16371415

申请日：2019-04-01

Applicant: HONDA MOTOR CO., LTD.

Inventor： Eiji KITTAKA ,  Takashi KUDO

IPC: F16H3/091 ,  F16H63/30 ,  F16H63/18 ,  F16H57/02

Abstract: A vehicle power unit is disclosed which prevents a transmission apparatus from becoming large in size and promotes reduction in size by reducing the number of parts. A transmission shift drum has a driven gear mounted on a shift drum rotary shaft portion on one end of the shift drum. An extended support wall is formed to extend to outside in a vehicle width direction in parallel with a first case side wall of a crankcase. The case side wall supports the first drum rotary shaft portion on which the driven gear is mounted. The extended support wall and the first case side wall support thereon gears of a reduction gear train between a drive gear of a shift motor mounted on the extended support wall and the driven gear.

公开(公告)号：US10436320B2

公开(公告)日：2019-10-08

申请号：US15447301

申请日：2017-03-02

Applicant: HONDA MOTOR CO., LTD.

Inventor： Yasushi Fujimoto ,  Taku Hirayama ,  Hiroyuki Makita ,  Yukio Yokogawa

IPC: F16H63/16 ,  B62M11/06 ,  B62M25/08 ,  F16H61/32 ,  B62M25/06 ,  B62K23/08 ,  F16H63/18 ,  F16H63/30 ,  F16H57/02

Abstract: A transmission structure for a vehicle, the transmission structure including: a transmission having a plurality of speed change stages, the transmission including a speed change operation mechanism that has an output portion receiving an input motion produced by an actuator as an operation driving source and changing a speed change stage of the transmission, and a transmission case that houses the speed change operation mechanism, a part of the speed change operation mechanism being a torsion bar as a torque transmitting member, and a rear end gear being disposed on an end portion of the torsion bar; the transmission case including a boss portion holding an intermediate portion in an axial direction of the torsion bar.

公开(公告)号：US10415673B2

公开(公告)日：2019-09-17

申请号：US14917091

申请日：2014-05-29

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takeshi Sugano ,  Tensei Hayashi ,  Toshimasa Mitsubori

IPC: F16H3/091 ,  B60K17/06 ,  F16H59/42 ,  F16H61/00 ,  F16H63/18 ,  B60K17/08 ,  B62M11/04 ,  F16H57/02 ,  F16H57/025 ,  F16H63/08 ,  F16H61/688 ,  F16H3/00 ,  F16H59/38

Abstract: A vehicle power unit is provided in which a transmission including a gear transmission mechanism and a gear selector mechanism is housed in a transmission case, the gear transmission mechanism having gear trains with a plurality of gear positions that can be established alternatively, the gear selector mechanism being capable of operating s as to alternatively establish the gear trains with the plurality of gear positions, and a plurality of rotational speed sensors individually detecting the rotational speed of a plurality of rotating members forming part of the transmission are mounted on the transmission case, wherein the plurality of rotational speed sensors are disposed in a distributed manner so as to sandwich the plurality of shaft members of the gear selector mechanism in a projection on a plane orthogonal to a central axis of a crankshaft.

公开(公告)号：US10408345B2

公开(公告)日：2019-09-10

申请号：US15741746

申请日：2016-07-12

Applicant: QINETIQ LIMITED

Inventor： Robert William Thompson

IPC: F16H63/18 ,  F16H25/12 ,  F16H63/32 ,  F16H63/30

Abstract: A shifting apparatus including a shaft extending along an axis, and at least one shifting feature, each of the at least one shifting feature including: a multi-part pin having first and second parts arranged to rotate relative to each other that extend through respective slots extending along the shaft; a drum arranged around the shaft and having channels extending along the length thereof wherein the first and second parts of the multi-part pin are respectively received for enabling torque transfer to the drum when the shaft is rotated, the drum also defining a track at least partially around its outer surface; a biasing mechanism for urging the drum towards a rest position along the length of the shaft; and a drive member selector member provided in operative relation to the track. The drive member selector member can be controlled to selectively engage a drive member.

公开(公告)号：US20190264803A1

公开(公告)日：2019-08-29

申请号：US16283309

申请日：2019-02-22

Applicant: SUZUKI MOTOR CORPORATION

Inventor： Tetsuro MATSUKAWA ,  Hiromi DEGUCHI

IPC: F16H59/68 ,  F16H63/18 ,  B62M25/06

Abstract: There is provided a shift control system for a saddle-type vehicle. A gear shift lever is configured to be operated by a driver. A gearshift sensor is configured to detect an operation on the gear shift lever. A shift cam is configured to rotate according to the operation on the gear shift lever. A gear position sensor is configured to detect a rotation angle of the shift cam. In the case where the gearshift sensor does not detect a detection result according to a detection result of the gear position sensor, or in the case where the gear position sensor does not detect a detection result according to a detection result of the gearshift sensor, a control device determines abnormality occurrence, and stops engine operation control based on the detection results of the gearshift sensor and the gear position sensor on the basis of the abnormality occurrence.