Patents Assigned to Johnson Electrics S.A.
  • Power tool
    Patent number: 9124145
    Abstract: A power tool includes a casing with an inlet and an outlet extending in a radial direction of the casing, a motor installed within the casing between the inlet and the outlet. The motor includes a stator and a rotor with a shaft, an air passage being formed between a radially outer surface of the stator and an inner surface of the casing. The air passage extends in the axial direction of the casing. A heat dissipation device is arranged on the radially outer surface of the stator for absorbing heat from the stator, and is disposed in the air passage. A fan is fixed to the shaft of the rotor. Air flow generated by the fan enters the casing via the inlet and exits the casing via the outlet after passing through the air passage and the heat dissipation device.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: September 1, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventor: James Ching-Sik Lau
  • Plug valve with a spring biased plug
    Patent number: 9115812
    Abstract: In a plug valve with a plug supported around its axis of rotation in a flow passageway of the valve housing, the plug is supported in a floating manner against a spring force pressing the plug against an annular sealing element. The spring force is provided by a spring element bearing against the valve housing and engaging with a trunnion of the plug. The sealing element is supported in a fixed position against a flow passage opening.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: August 25, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Majid Bakhshi, Joerg Gassmann, Wolfram Schwarze
  • Electric motor
    Patent number: 9118223
    Abstract: A DC electric motor has a stack of laminations defining a rotor with at least two pairs of poles and an even number of slots at least equal to 8. The rotor also has a commutator with an even number of segments and a closed distributed rotor winding. The winding extends in the slots and is connected in a predetermined manner to the segments of the commutator. The rotor winding has a winding section of the lap type, connected to two consecutive segments of the commutator and, in series with this, a plurality of winding sections of the wave type. These winding sections all span an identical number of slots.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: August 25, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Gian Carlo Magnetti, Daniele Paolo Dal Colle
  • Permanent magnet motor
    Patent number: 9118235
    Abstract: A permanent magnet motor has a rotor and a stator. The rotor has a shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft adjacent to the rotor core, and rotor windings wound about poles of the rotor core and electrically connected to the commutator. The stator includes a magnetically conductive round housing, permanent magnets fixed to an inner surface of the housing, and brushes for making sliding contact with the commutator. The ratio of an outer diameter of the rotor core to an outer diameter of the housing is between 66% to 84%.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: August 25, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Xue Ming He, Hai Yang Wang, Qiang Zhou
  • Electric cart with gear motor
    Patent number: 9115790
    Abstract: The electric cart has a main body, wheels at the bottom of the main body and a gear motor to electrically drive the wheels. The gear motor includes a motor having a motor shaft, an output shaft connected to at least one of the wheels, and a gear reduction unit connecting the motor shaft to the output shaft. The gear reduction unit has a helical gear train.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: August 25, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Xiu Hua Zhu, Tong Ling
  • Drive unit
    Patent number: 9109677
    Abstract: The planetary gear train includes a first sun gear driven by the motor, a first ring gear, a first carrier, and a plurality of first planetary gears arranged at one side of the first carrier and meshing with the first sun gear and the first ring gear. The first sun gear, first planetary gears and first ring gear are helical gears so that meshing surface is increased. Helical teeth formed on an inner surface of the first ring gear mesh with the helical teeth of the first planetary gears. Therefore, the operation is stable and the noise is low. The planetary gears are made of plastic to further decrease the noise. The first ring gear is made by sintered powder metallurgy.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: August 18, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Yue Wang, Xing Ju Yi, Guo Ping Zhang, Xiao Hui Wang, Hong Yu Ding, Jing Ning Ta, Dennis Francis Gorosin
  • Coreless permanent magnet motor with surface charged magnet
    Patent number: 9112401
    Abstract: A coreless permanent motor has a stator and a rotor rotatably mounted to the stator. One of the stator or the rotor has at least one winding disc (28). The other one of the stator or the rotor has at least one surface charged magnet disc (33). The winding disc (28) or the magnet disc (33) is formed by two or more sector shaped units that are mounted to two or more support members (27) respectively. The winding disc (28) or the magnet disc (33) is formed by closing the support member (27) and the closed support members (27) form a cylindrical housing. Thus, the structure of the coreless motor is simplified.
    Type: Grant
    Filed: July 11, 2011
    Date of Patent: August 18, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: LiSheng Liu, Yue Li, HongJian Zhang, Guoji Zhang
  • Torque transmitting device and powertrain incorporating a permanent magnet motor
    Patent number: 9108616
    Abstract: A motor (21) includes a stator (30) and a rotor (40). The stator includes a housing (31) accommodating magnet(s) (32) and including multiple sidewalls (33) and connecting portions (34) adjoining neighboring sidewalls. A sidewall includes zero or more flat segment (35, 38) and zero or more curved segments (38, 36) having one or more radii. A connecting portion includes a substantially flat segment or a curved segment having one or more radii and adjoins two neighboring sidewalls. A torque transmitting device (15) includes the motor and a clutch (22) actuated by the motor to transmit or cease transmitting engine (11) output to driven mechanism(s) (17, 18, 12, 13, 14). A powertrain includes the torque transmitting device to switch between drive modes with the torque transmitting device to engage or disengage engine output with axles.
    Type: Grant
    Filed: November 6, 2013
    Date of Patent: August 18, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Ruifeng Qin, Chengshun Du, Linan Li, Fayun Qi
  • Centrifugal pump
    Patent number: 9101256
    Abstract: A centrifugal pump has an electric motor, an impeller driven by the motor and a spiral volute. The impeller has an annular base plate and a plurality of vanes arranged on the base plate. The spiral volute has an inlet, an outlet and an impeller chamber in which the impeller is disposed. The inlet extends outwardly from a top wall of the volute. The outlet extends outwardly from a side wall of the volute in the spiral direction of the volute. The spiral volute has a wrap angle between 360 to 460 degrees. A washing apparatus incorporating the centrifugal pump is also provided.
    Type: Grant
    Filed: January 18, 2012
    Date of Patent: August 11, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Chuan Jiang Guo, Chuan Hui Fang
  • Universal motor
    Patent number: 9099911
    Abstract: A universal motor includes a wound rotor and a stator. The stator has stator windings and a stator code. The stator core has at least two poles with the stator windings wound thereon and a yoke connecting the poles. Each pole has a neck and a pole shoe forming a continuous pole arc facing the rotor. The ratio of the diameter of the motor to the width of the stator core measured across the poles is between 0.65˜0.95.
    Type: Grant
    Filed: August 2, 2011
    Date of Patent: August 4, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Bao Ting Liu, Ji Cheng Pan, Xu Hai Wei
  • Brushed direct current electric motor with salient pole rotor
    Patent number: 9099909
    Abstract: A brush direct current motor has a stator with a plurality of coils that correspond to a number of stator windings, a rotor with a number of poles, and a commutator. The commutator is connected to a first terminal of a direct current power source to convert the power into N phase alternating current. One end of each stator winding is connected to a respective phase of the alternating current via a brush and the other ends of the stator windings are connected to the second terminal of the direct current power source.
    Type: Grant
    Filed: April 27, 2012
    Date of Patent: August 4, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Yue Li, Li Sheng Liu, Yong Qing Qi, Hong Jian Zhang
  • Electrical switch arrangement
    Patent number: 9087661
    Abstract: An electrical switch arrangement has a switch housing and a button guided in the switch housing. The button can be brought into two fixed switching states. A display indicates when at least one of the switching states is reached. A U-shaped spring is arranged inside the button approximately at right angles to the direction of movement the button. The spring is guided in a guide track formed in sections of the switch housing.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: July 21, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventor: Martin Koepsell
  • Brushless motor
    Patent number: 9083226
    Abstract: A brushless motor has a stator and a rotor. The stator has a stator core and stator windings. The stator core has a stator yoke and teeth extending radially inwardly from the stator yoke. The stator windings are formed by concentrated coils wound on the teeth. The rotor has a rotor shaft, a rotor core fixed to the rotor shaft and magnets fixed in slots formed in the rotor core. Each magnet is plate shaped and extends in both axial and radial directions of the rotor and each magnet is magnetically charged across its thickness so that a rotor pole is formed between two adjacent magnets. The ratio of the radial thickness (Y) of the stator yoke to the width (T) of the tooth body is from 0.4 to 0.7.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: July 14, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Yue Li, Jian Zhao, Yong Wang, Ya Ming Zhang, Yan Hong Xue, Mao Xiong Jiang
  • Electric direct-current motor
    Patent number: 9083223
    Abstract: An electric D.C. motor, in particular for a cooling fan of a vehicle, has a brush holder. The brush holder has a carrier structure having a plurality of brush cages mounted therein. Brushes, radially displaceable within the brush cages are connected, respectively, to a positive supply terminal and a negative supply terminal. An electric supply connector and a filter for preventing the emission of electromagnetic interference, are associated with the brush holder. Components of the filter, including first and second inductors and at least one capacitor are housed inside the electric supply connector.
    Type: Grant
    Filed: November 24, 2012
    Date of Patent: July 14, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Gionatan Nuzzo, Pier Angelo Farello
  • Electric motor with heat dissipating device
    Patent number: 9077230
    Abstract: An electric motor has a stator and a rotor rotatably mounted in the stator. The stator includes a stator core and stator windings. A heat dissipating device is mounted around an outer surface of the stator core and configured to absorb heat there from. The heat dissipating device includes a base mounted around the stator core and a plurality of fins extending outwardly from the base in the radial direction. Electronic components are mounted on the heat dissipating device. A fan is mounted on a shaft of the rotor for generating a flow of air inside the stator and through slots between the fins to thereby cool the rotor, stator core, stator windings and electronic components.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: July 7, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: James Ching Sik Lau, Xiao Jun Yang
  • Commutator having conductive rings
    Patent number: 9065232
    Abstract: A commutator includes a substantially tubular insulating core, a first slip ring fixed to the core, a plurality of first bars electrically connected to the first slip ring, a second slip ring fixed to the core, and a plurality of second bars electrically connected to the second slip ring. The first bars and the second bars are fixed to the outer surface of the core and are alternately arranged at equally spaced intervals in the circumferential direction of the core. The first slip ring and the second slip ring are arranged on the same side of the first bars and the second bars. The first and second slip rings respectively comprise a contact surface that is substantially perpendicular to the axis of the commutator and is configured for contacting brushes.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: June 23, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: Yue Li, Mao Xiong Jiang, Yong Wang, Hai Hui Xiang, Ya Ming Zhang, Jian Zhao
  • Stator core
    Patent number: 9059611
    Abstract: A stator core includes at least one bendable strip-shaped core. Each strip-shaped core is formed by stacking a plurality of laminations. Each lamination includes at least two yoke portions and at least two tooth portions. Every two adjacent yoke portions are connected to each other via a bendable portion and have two opposite end surfaces, one of the end surfaces having a groove and the other having a projecting rib. After the bendable portion is bent the projecting rib is engaged in the groove to form an interlock structure such that relative circumferential movement between the adjacent yoke portions is limited.
    Type: Grant
    Filed: September 21, 2012
    Date of Patent: June 16, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Yue Li, Bao Ting Liu, Kui Man Lai, Yong Wang, Xiao Ning Zhu
  • Method of mounting a shaft in a bearing carrier and bearing carrier
    Patent number: 9051969
    Abstract: A bearing carrier for a shaft of an electric motor has a carrier member supporting two bearings supporting the shaft. The carrier member has a single bearing seat accommodating the two bearings to ensure the two bearings are coaxially mounted. A spacing member axially separates the two bearings. The spacing member has a central passage through which the shaft extends with radial play, as well as two end surfaces parallel with each other, orthogonal to the axis of the passage and axially separated by a distance which corresponds to the desired mounting distance between the bearings. During assembly, the bearings and spacing member are mounted on the shaft to form a preassembled group. The preassembled group is pressed into the bearing seat of the carrier member, with one bearing being pressed against a stop formed at one end of the bearing seat.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: June 9, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventor: Vincenzo Corona
  • METHOD AND SYSTEM FOR ASSEMBLING A MICROFLUIDIC SENSOR
    Publication number: 20150140671
    Abstract: A microfluidic sensor (10), such as an electrochemical blood test strip, with more accurate measurement comprises a plurality of channels (24) through which a fluid to be tested flows via a capillary action. One or more electrodes (30) are located under the channels (24). As the fluid flows over the electrodes (30) in the channels (24), the impedance between the electrodes (30) may be measured to determine fluid properties. In order to increase the accuracy of the measurements, the electrode deposition may be configured to be less than 10 ?m in thickness via a printing process with high process consistency, thereby reducing the disruption of the electrode deposition on the fluid flow.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 21, 2015
    Applicant: JOHNSON ELECTRIC S.A.
    Inventor: Libing Zhang
  • Motor and electric parking brake system
    Patent number: 9033117
    Abstract: A motor for actuating brake members of an electric parking (EPB) system, includes a stator and a rotor rotatably mounted to the stator. The rotor has a shaft, a commutator, a rotor core fixed to the shaft, and rotor windings wound about teeth of the rotor core and electrically connected to segments of the commutator. The rotor windings have a plurality of winding units and each of the winding units have at least two coils. The coils of each winding unit are wound about the same teeth and are connected to a same pair of segments.
    Type: Grant
    Filed: November 17, 2010
    Date of Patent: May 19, 2015
    Assignee: Johnson Electric S.A.
    Inventors: Hang Cheong Ma, Hing Shing Chung, Hai Ning Liao