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51. 发明授权

US10591949B2 Transducer device 有权
公开(公告)号：US10591949B2
公开(公告)日：2020-03-17
申请号：US16105648
申请日：2018-08-20
申请人： Defond Components Limited , Defond Electech Co., Ltd.
发明人： Cheng Chen Nieh , Hoi Him Ko
IPC分类号： G05G5/06 , G05G1/10 , H01H19/04 , H01H19/08 , H01H19/14 , H01H19/54 , G05G1/08
摘要： A transducer device including: a base platform; an annular support member mounted on a surface of the base platform, the annular support member having a first opening positioned adjacent the surface of the base platform and a second opening positioned away from the surface of the base platform along a rotation axis; an inner shaft mounted relative to the base platform and configured to extend away from the second opening of the annular support member and rotate relative to the annular support member about the rotation axis; an inner shaft detent mechanism located at least partially within the annular support member configured for releasably securing the inner shaft in a plurality of rotational positions corresponding to each of a plurality of detent positions of the inner shaft detent mechanism as the inner shaft is rotated about the rotation axis; an outer shaft including a passage extending along an elongate axis thereof configured for receiving the inner shaft therein so that the inner shaft and outer shaft are arranged to rotate concentrically relative to each other about the rotation axis, the outer shaft further including a flanged portion configured for seating upon an outer surface of the annular support member; a PCB unit disposed on the surface of the base platform comprising: a first transducer circuit unit operably coupled to the inner shaft and responsive to rotational movement of the inner shaft about the rotation axis so that the first transducer circuit unit outputs a first electrical signal that is indicative of a rotational position of the inner shaft about the rotational axis; a second transducer circuit unit operably coupled to the outer shaft and responsive to rotational movement of the outer shaft about the rotation axis so that the second transducer circuit unit will output a second electrical signal that is indicative of a rotational position of the outer shaft about the rotational axis; a housing configured for enclosing the first and second transducer circuit units therein and having an opening disposed in a wall of the housing via which ends of the inner and outer shafts may extend outwardly of the housing along the rotation axis; and an outer shaft detent mechanism located between the outer shaft and an inner surface of the housing configured for releasably securing the outer shaft in a plurality of rotational positions corresponding to each of a plurality of detent positions of the outer shaft detent mechanism as the outer shaft is rotated about the rotation axis.

52. 发明申请

US20190198270A1 LOCKING SYSTEM FOR USE WITH A TRIGGER ASSEMBLY OF AN ELECTRICAL DEVICE 审中-公开
公开(公告)号：US20190198270A1
公开(公告)日：2019-06-27
申请号：US16112211
申请日：2018-08-24
申请人： DEFOND ELECTECH CO., LTD. , DEFOND COMPONENTS LIMITED
发明人： Kin Yu Wong
IPC分类号： H01H19/03 , B25F5/02 , H01H19/635
摘要： A trigger assembly for use with an electrical device, including a trigger member, an actuator member operably-connected to the trigger member, and a lock-on mechanism for selectably restricting movement of the trigger member relative to the housing.

53. 发明公开

US20240222042A1 LINKAGE STRUCTURE OF KEY SWITCH 审中-公开
公开(公告)号：US20240222042A1
公开(公告)日：2024-07-04
申请号：US18164683
申请日：2023-02-06
申请人： DEFOND ELECTECH CO., LTD
发明人： Hua Lin Pan , Xiao Yu Lai , Cheng Chen Nieh , Ka Leung Chan
IPC分类号： H01H9/26 , H01H13/14 , H01H13/70
CPC分类号： H01H9/26 , H01H13/14 , H01H13/7013 , H01H9/10
摘要： The present invention relates to a linkage structure of a key switch. A second key and a fourth key share one bridge and are connected by a first connecting rod. When the second key or the fourth key is pressed down, the first connecting rod is pushed, so that a first bridge metal dome deforms and is connected to a common contact piece for conduction. A third key and a fifth key share one bridge and are connected by a second connecting. When the third key or the fifth key is pressed down, the second connecting rod is pushed, so that a second bridge metal dome deforms and is connected to the common contact piece for conduction. An input terminal is connected in series to a fuse, and the second key and the fourth key are connected in series to a diode so as to output a rectification half-wave.

54. 发明授权

US11913812B2 Control assembly for use in operation of an electric device 有权
公开(公告)号：US11913812B2
公开(公告)日：2024-02-27
申请号：US17455985
申请日：2021-11-22
申请人： Defond Electech Co., Ltd. , Defond Components Limited
发明人： Cheng Chen Nieh , Chiu Keung Loong , Wai Man Wong
IPC分类号： A01D34/416 , G01D5/14 , G01R33/00 , G01R33/07 , G01R33/09 , H02P6/08 , H02P6/30 , B25F5/00
CPC分类号： G01D5/145 , G01R33/0076 , G01R33/072 , G01R33/091 , H02P6/08 , H02P6/30 , B25F5/001
摘要： A control assembly for controlling a speed or torque of operation of an electric device includes a control assembly housing, a magnetic sensor, a magnetic element; and an actuator. The actuator moves relative to the control assembly and, responsive to that movement, the magnetic sensor and magnetic element are moved relative to each other between a first position and a second position so that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position. A control module is operably connected to the magnetic sensor and configured for controlling the electric device, and a magnetic shielding element is positioned within the control assembly housing to alleviate a magnetic signal source external to the control assembly from interfering with the sensing by the magnetic sensor.

55. 发明授权

US11907449B2 Control knob with motion sensing for controlling operation of a machine 有权
公开(公告)号：US11907449B2
公开(公告)日：2024-02-20
申请号：US16786423
申请日：2020-02-10
申请人： Defond Electech Co., Ltd. , Defond Components Limited
发明人： Cheng Chen Nieh , Chi Ming Lai
IPC分类号： G06F3/0362 , G06F3/01 , G06F3/041 , G06F3/04847 , G06F3/04883 , G06F3/14
CPC分类号： G06F3/0362 , G06F3/016 , G06F3/041 , G06F3/04847 , G06F3/04883 , G06F3/14
摘要： A control knob for controlling operation of a machine, the control knob including: an attachment surface configured for attaching the control knob to a surface of the machine; a display member comprising an electronic display module disposed thereon; a motion sensor configured for sensing motion of the user's hand, said sensor being operably-connected to the display member such that, responsive to the motion sensor sensing motion of the user's hand, the display member is configured to switch operation from a sleep mode into an active mode; an operational mode display controller for controlling display of operational modes of the machine upon the electronic display module, said operational mode display controller being configured for rotational movement around the electronic display module amongst a plurality of rotational positions, said operational mode display controller being operably connected with the electronic display module such that, responsive to the rotational movement of the operational mode display controller amongst the plurality of rotational positions, the electronic display module is configured to display a plurality of operational modes of the machine corresponding to the plurality of rotational positions; and an operational mode selector for controlling selection of one of the plurality of operational modes of the machine when said one of the plurality of operational modes is displayed on the electronic display module, the operational mode selector being configured for depressible movement to actuate selection of the operational mode displayed on the electronic display module.

56. 发明公开

US20230219207A1 CONTROL ASSEMBLY FOR USE IN OPERATION OF AN ELECTRIC DEVICE 审中-公开
公开(公告)号：US20230219207A1
公开(公告)日：2023-07-13
申请号：US18119054
申请日：2023-03-08
申请人： DEFOND ELECTECH CO., LTD , DEFOND COMPONENTS LIMITED
发明人： Wai Man Wong , Chiu Keung Loong
IPC分类号： B25F5/00 , H02P6/30 , H02P6/08
CPC分类号： B25F5/001 , H02P6/08 , H02P6/30
摘要： A control assembly for use in controlling a speed of operation of an electric device, the control assembly including: a control assembly housing; a magnetic sensor; a magnetic element; an actuator that is configured for movement relative to the control assembly housing wherein responsive to said movement of the actuator relative to the control assembly housing, the magnetic sensor and magnetic element move relative to each other between at least one of a first position and a second position such that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position; and, a control module operably connected to the magnetic sensor and configured for controlling the electric device to operate in at least one of a first speed and a second speed by reference to an output of the magnetic sensor indicative of the sensed first magnetic field reading and the second magnetic field reading respectively.

57. 发明授权

US11651915B2 Electrical switch device 有权
公开(公告)号：US11651915B2
公开(公告)日：2023-05-16
申请号：US17575574
申请日：2022-01-13
申请人： DEFOND ELECTECH CO., LTD
发明人： Kin Yu Wong
IPC分类号： H01H23/06 , H01H23/16 , H01H23/28
CPC分类号： H01H23/16 , H01H23/06 , H01H23/28
摘要： An electrical switch device including a switch housing having first and second compartments separated by a partition; an electrical switch assembly disposed in the second compartment; a control knob configured for seating adjacent to the first compartment, and having a user engagement portion and a plunger configured to extend from user engagement portion from the first compartment in to the second compartment via an opening in the partition separating the first and second compartments when the control knob is seated, and said plunger being configured for movable interaction with the electrical switch assembly; and a sealing member including a base portion configured for securing of the sealing member to the housing, and, a tubular portion extending from the base portion and configured to surround the plunger so as to alleviate ingress of liquid from the first compartment in to the second compartment via the opening in the partition.

58. 发明申请

US20220397426A1 CONTROL ASSEMBLY FOR USE IN OPERATION OF AN ELECTRIC DEVICE 有权
公开(公告)号：US20220397426A1
公开(公告)日：2022-12-15
申请号：US17455985
申请日：2021-11-22
申请人： Defond Electech Co., Ltd. , Defond Components Limited
发明人： Cheng Chen NIEH , Chiu Keung LOONG , Wai Man WONG
IPC分类号： G01D5/14 , G01R33/07 , G01R33/00 , G01R33/09
摘要： A control assembly for controlling a speed or torque of operation of an electric device includes a control assembly housing, a magnetic sensor, a magnetic element; and an actuator. The actuator moves relative to the control assembly and, responsive to that movement, the magnetic sensor and magnetic element are moved relative to each other between a first position and a second position so that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position. A control module is operably connected to the magnetic sensor and configured for controlling the electric device, and a magnetic shielding element is positioned within the control assembly housing to alleviate a magnetic signal source external to the control assembly from interfering with the sensing by the magnetic sensor.

59. 发明申请

US20200379502A1 Control Stick 审中-公开
公开(公告)号：US20200379502A1
公开(公告)日：2020-12-03
申请号：US16884680
申请日：2020-05-27
申请人： Defond Electech Co., Ltd. , Defond Components Limited
发明人： Ka Him Leung , Cheng Chen Nieh , Cheong Yip Chan
IPC分类号： G05G9/047
摘要： A control stick includes a control portion, a first electrical contact portion and a second electrical contact portion. The control portion has plural first moving contact points, the first electrical contact portion has a control board and plural first static contact points corresponding to the first moving contact points respectively, and a gap exists between the first moving contact point and the respective first static contact point. The first static contact points are electrically connected with the control board. When the control portion swings towards one of the first moving contact points, the first moving contact point is contacted and conducted with the first static contact point. This control stick is capable of achieving the control of a multiple of variables to meet the requirements of controlling a multiple variable in some occasions.

60. 发明授权

US10848084B2 Brushless DC motor control unit 有权
公开(公告)号：US10848084B2
公开(公告)日：2020-11-24
申请号：US16101408
申请日：2018-08-11
申请人： DEFOND ELECTECH CO., LTD. , Defond Components Limited
发明人： Cheng Chen Nieh , Wai Man Wong , Ming Leong Kong , Pat On Kwok
IPC分类号： H02P7/29 , H02P1/18 , H03K17/0412 , H03K17/687 , B25F5/00 , H01H13/12 , H02P6/08 , H01H9/02
CPC分类号： H02P7/29 , B25F5/00 , H01H13/12 , H02P1/18 , H02P6/08 , H03K17/04123 , H03K17/687 , B25F5/001 , H01H9/0214
摘要： An electrical switch unit for use with an electrical device to control operation of a DC motor of the electrical device, the electrical switch unit comprising: a housing which houses a pair of electrical switching contacts, and, an actuator operably connected with at least one of the pair of electrical switching contacts, the actuator being configured for movement relative to the pair of electrical switching contacts so as to arrange the pair of electrical switching contacts into at least one of a closed configuration wherein power is able to be supplied from the DC power source to the DC motor via the pair of electrical switching contacts, and, an opened configuration wherein power is not able to be supplied from the DC power source to the DC motor via the pair of electrical switching contacts; a signaling module associated with the electrical switch unit comprising signaling circuitry for sensing the movement of the actuator and outputting a signaling module signal indicative of the sensed movement or position of the actuator; a power module comprising at least one power switching device for controllably supplying power from the DC power source to the DC motor; a control module comprising control circuitry for receiving the signaling module signal, and responsive to the received signaling module signal, outputting a control module signal to control the at least one power switching transistor device of the power module wherein the at least one power switching device controllably supplies power from the DC power source to the DC motor to allow operation of the DC motor at a speed corresponding to the sensed movement or position of the actuator; and wherein, the signaling module is integrally connected to a first end of the control module that is located within the electrical switch unit housing to allow relatively direct electrical communication between the pair of electrical switching contacts and the control module, and, whereby the control module is configured to extend outwardly of the electrical switch housing so as to terminate at a distal second end.

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