Patents by Inventor Ruiguang Wen

Ruiguang Wen 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: 20190149061
    Abstract: A power source device of an electric tool includes: a power source module, including a short circuit protection circuit, a filter circuit, a start circuit and a rectifier filter circuit, wherein the power source module converts an inputted AC (alternating current) into a high voltage DC (direct current) through the short circuit protection circuit, the filter circuit, the start circuit and the rectifier filter circuit; a driving module, including an H bridge circuit, a control circuit, a protection circuit and a control power source, wherein the driving module divides the high voltage DC into a first DC and a second DC; and a power cable, respectively connected to the power source module and the driving module, for sending the high voltage DC from the power source module to the driving module.
    Type: Application
    Filed: August 26, 2015
    Publication date: May 16, 2019
    Inventors: Kewei Wang, Ruiguang Wen
  • Publication number: 20190140532
    Abstract: A magnetic circuit of a BLDC motor includes a stator iron core, a rotor iron core, permanent magnets and a magneto-sensitive sensor. The permanent magnets are longer than the rotor iron core; the magneto-sensitive sensor is provided at a protrusion of the rotor iron core and far away from an impact of a magnetic field of a stator; a magnetic screening slot and a positioning convex portion are respectively provided at each end of said permanent magnet slot; the magneto-sensitive sensor senses a magnetic field of two ends of each permanent magnet, rather than a combined magnetic field of the rotor iron core and each permanent magnet, so as to effectively reduce Hall signal jitters caused by irregular and unclear boundaries between two magnetic poles on a surface of the rotor. A permanent magnet embedded rotor thereof is also disclosed.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 9, 2019
    Applicant: Renun Mechanical & Electrical Co., Ltd
    Inventors: Kewei WANG, Ruiguang WEN
  • Publication number: 20170117764
    Abstract: A permanent magnet rotor includes: a rotor core, formed by laminating a plurality of rotor sheets, wherein the rotor sheets have a shaft hole drilled at a center thereof, and a plurality of permanent magnet grooves are provided on each of the rotor sheets; both ends of the permanent magnet groove have an air gap, the permanent magnet grooves are evenly distributed along circumference of each rotor sheet, and a connecting bridge is provided between each adjacent permanent magnet grooves; a plurality of permanent magnets, wherein the permanent magnets are respectively embedded in the permanent magnet grooves; and a shaft, passing through the shaft hole and mounted on the rotor core.
    Type: Application
    Filed: May 6, 2015
    Publication date: April 27, 2017
    Inventors: Kewei Wang, Ruiguang Wen
  • Publication number: 20160248284
    Abstract: A permanent magnet embedded rotor of BLDC motor, comprises: a rotor core (A), which is in a shape of cylinder and formed by stacked rotor sheets, having p pairs of permanent magnet grooves (C) which are bar-shaped and 2p heat-radiating through-holes (B); wherein the p pairs of permanent magnet grooves (C) and the 2p heat-radiating through-holes (B) are all provided inside the rotor core (A) in a direction of an center axle thereof, and evenly spaced around the center axle of the rotor core (A); each of the heat-radiating through-holes (B) is provided between two permanent magnet grooves (C); and p is an integer no less than 1; and p pairs of permanent magnets (D) which are bar-shaped, fixedly provided in the permanent magnet grooves (C), wherein each of the permanent magnets (D) has a trapezoid cross section, and p is an integer no less than 1.
    Type: Application
    Filed: March 10, 2014
    Publication date: August 25, 2016
    Inventors: Kewei Wang, Ruiguang Wen