Patents by Inventor Fuying Cheng

Fuying Cheng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190078623
    Abstract: A type of constant velocity universal joint has the spline slip structure, including the steel wire retaining ring and the star-shaped sleeve which are both mounted on a common axis, and the steel wire retaining ring limiting device. The said steel wire retaining ring limiting device is a groove arranged on the said star-shaped sleeve and used for holding the said steel wire retaining ring. The said steel wire retaining ring may be elliptic or circular. The movement in the radial direction of the steel wire retaining ring will be limited by the groove on the star-shaped sleeve and there occurs a certain contraction, in addition to appropriate the chamfer angle of the groove, so it is very convenient to remove the spline shaft from the star-shaped sleeve.
    Type: Application
    Filed: July 19, 2018
    Publication date: March 14, 2019
    Inventors: Fuying Cheng, Zhenxiang Kuang, Li Jiajun
  • Publication number: 20190024770
    Abstract: A mechanical locking differential includes a driving ring in a differential housing between right and left active components. The driving ring is in line with the input bevel gear. The differential housing has a thin wall in a single, integral shell around the driving ring. Several hollow cylindrical shaft pins are used to attached the driving ring to the differential housing, with the shaft pins being driven radially relative to the transverse axis of the differential outputs in an interference fit with the housing and the driving ring. The shaft pins are held from axially backing out by two small rivets. The shaft pins preferably have a threaded inner diameter which assists in removal. The shaft pin attachment allows the bevel gear to extend closer to the transverse axis without obstruction.
    Type: Application
    Filed: July 19, 2018
    Publication date: January 24, 2019
    Inventors: Zhenxiang Kuang, Fuying Cheng, Jiajun Li
  • Publication number: 20190024771
    Abstract: A mechanical locking differential includes a drive lock motor supported by the differential housing. The drive lock motor is disposed opposite the input bevel gear assembly, higher than the differential input and the differential outputs. The drive lock motor is coupled to a differential lock with a gear train that includes a worm drive, to output rotational motion on a lock output gear. The lock output gear causes sliding motion of a rack and a rack follower, pressing the differential lock into or out of engagement. The drive lock motor assembly is disposed fully between the right and left extents of the differential.
    Type: Application
    Filed: July 19, 2018
    Publication date: January 24, 2019
    Inventors: Fuying Cheng, Zhenxiang Kuang
  • Patent number: 9890843
    Abstract: A transmission mechanism of an all-terrain vehicle is provided, which includes an independent suspension axle. The independent suspension axle includes a left driving half-axle and a right driving half-axle. A jaw differential is provided at a joint of the left driving half-axle and the right driving half-axle and is configured to allow half-axles at two sides to rotate at different speeds when the axle of the all-terrain vehicle transmits power to the half-axles at the two sides, and prevent a wheel at one side from slipping. For the all-terrain vehicle adopting the jaw differential, side tipping, side slipping, and tire scuffing are not apt to occur, thus the vehicle may get rid of stuck conditions such as slipping, and the working reliability of the all-terrain vehicle is improved. An all-terrain vehicle adopting the transmission mechanism is further provided.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: February 13, 2018
    Assignee: Zhejiang CFMOTO Power Co., Ltd.
    Inventors: Minjie Lai, Zhangping Yuan, Fuying Cheng, Zhenxiang Kuang
  • Publication number: 20170356539
    Abstract: An all-terrain vehicle and a transmission mechanism thereof are provided. The transmission mechanism includes an independent suspension axle, and the axle includes a left half-axle and a right half-axle. A mechanical locking spiral differential device is further provided at a joint of the left half-axle and the right half-axle, which makes the left half-axle and the right half-axle to be in a differential state when the vehicle runs normally, and to be in a differential locked state automatically when the vehicle slips on one side. The differential device allows the wheels to perform unequal distance running by pure rolling as much as possible and prevent the vehicle from side tipping and side slipping and tire scuffing, and also allows the torque on one side to be transferred to the torque on another side to enable the all-terrain vehicle to get rid of a stuck condition.
    Type: Application
    Filed: October 7, 2016
    Publication date: December 14, 2017
    Applicant: Zhejiang CFMOTO Power Co., Ltd.
    Inventors: Minjie Lai, Zhangping Yuan, Zhiyong Chen, Zhenxiang Kuang, Fuying Cheng
  • Publication number: 20170356538
    Abstract: A mechanical locking differential primarily includes a drive ring and right and left driven rings that can move sideways into and out of engagement with the drive ring. The drive ring and the driven rings have teeth with an inverted trapezoidal shape with a significant clearance, such as a pressure angle of ?1° and a clearance of 20% circumferentially. A central ramping separator ring provides a ramping mechanism with inclines that push the driven rings out of engagement with the drive ring when the associated half axle rotates faster than the drive ring, with the ramping action occurring within the teeth clearance.
    Type: Application
    Filed: June 8, 2017
    Publication date: December 14, 2017
    Inventors: Fuying Cheng, Zhenxiang Kuang
  • Publication number: 20170355226
    Abstract: A half shaft connects to the mounting bracket of the wheel in a splined connection. The straight external spline of the half shaft is modified to a helical or involute external spline, in which the helix angle adopted is small. The mounting bracket of the wheel can be longitudinally advanced by hand assembly only part way onto the half shaft. The rest of the longitudinal advancement during assembly occurs by tightening the nut to completely eliminate the fit clearance between the external spline and its corresponding mating arrangement. Various road tests of vehicles verify that, when using the present invention, the nut does not loosen during use of the vehicle. The invention enables the locking force of the nut to be reduced, and assembly and maintenance are convenient.
    Type: Application
    Filed: June 8, 2017
    Publication date: December 14, 2017
    Inventors: Fuying Cheng, Zhenxiang Kuang
  • Publication number: 20170356502
    Abstract: A drive shaft is formed by welding two spline shaft heads to a hollow middle section of tubing. The spline shaft head includes teeth which are crowned to permit an angular offset of the drive shaft relative to cylindrical splines of connectors, such that the end faces of the teeth define a barrel shape. The teeth of the spline shaft head include a side face curvature, defining a football-shaped tooth cross-section. Torque is rotationally transmitted across a permitted angular offset of the drive shaft relative to cylindrically arranged linear splines of drive and driven connectors (i.e., relative to the engine output axis of rotation and the differential input axis of rotation), thereby avoiding the use of prior art universal joints.
    Type: Application
    Filed: June 8, 2017
    Publication date: December 14, 2017
    Inventors: Fuying Cheng, Zhenxiang Kuang
  • Publication number: 20170356537
    Abstract: A transmission mechanism of an all-terrain vehicle is provided, which includes an independent suspension axle. The independent suspension axle includes a left driving half-axle and a right driving half-axle. A jaw differential is provided at a joint of the left driving half-axle and the right driving half-axle and is configured to allow half-axles at two sides to rotate at different speeds when the axle of the all-terrain vehicle transmits power to the half-axles at the two sides, and prevent a wheel at one side from slipping. For the all-terrain vehicle adopting the jaw differential, side tipping, side slipping, and tire scuffing are not apt to occur, thus the vehicle may get rid of stuck conditions such as slipping, and the working reliability of the all-terrain vehicle is improved. An all-terrain vehicle adopting the transmission mechanism is further provided.
    Type: Application
    Filed: October 7, 2016
    Publication date: December 14, 2017
    Applicant: Zhejiang CFMOTO Power Co., Ltd.
    Inventors: Minjie Lai, Zhangping Yuan, Fuying Cheng, Zhenxiang Kuang
  • Patent number: D640604
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: June 28, 2011
    Assignee: Zhejiang CFMOTO Power Co., Ltd
    Inventors: Guogui Lai, Yongzhou Zhao, Zhangping Yuan, Minqiang Xiong, Jun Zhao, Fuying Cheng