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公开(公告)号：US20200328606A1
公开(公告)日：2020-10-15
申请号：US16820110
申请日：2020-03-16
Applicant: Defond Electech Co., Ltd. , Defond Components Limited
Inventor： Cheng Chen Nieh , Wai Cheong Wilson Chu , Sen Xian Fang
Abstract: A wireless charging device with a detachable base, which comprises a base and a power supply device detachably connected to the base. The base is provided with a wireless charging module, and the power supply device is internally provided with a power supply and is further provided with a first electrical connection part electrically connected to the power supply. The base is provided with a second electrical connection part which is matched with the first electrical connection part and electrically connected to the wireless charging module. When the base is connected to the power supply device, the first electrical connection part is conductive with the second electrical connection part. The wireless charging device with a detachable can be used to wirelessly charge electronic devices needing different charging powers by means of power supply devices of different specifications.
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公开(公告)号：US20200185167A1
公开(公告)日：2020-06-11
申请号：US16706493
申请日：2019-12-06
Applicant: Defond Electech Co., Ltd , Defond Components Limited
Inventor： Kin Yu Wong
Abstract: A snap-action switch including: a housing in which a plurality of fixed contacts and a plurality of movable contacts are disposed therein, a plunger configured for depressible movement via an aperture in the housing from a first position in which the plunger is relatively extended outwardly of the housing via the aperture, into, a second position in which the plunger is relatively retracted inwardly of the housing via the aperture; and a snap-action assembly operably-connected with the plunger, said snap-action assembly being responsive to depressible movement of the plunger so as to effect snap-action type movement of the plurality of movable contacts between normally opened and normally closed positions with respect to the fixed contacts; a sealing element configured for arrangement around the plunger to occlude ingress of particulates, dust and water from entering the housing via the aperture, said sealing element including a flanged portion; and a securement element configured for arrangement around the sealing element, wherein said securement element is shaped and dimensioned for interference fitting or snap-fitting with a rim of the aperture whereby the flanged portion of the sealing element is secured between the securement element and the rim of the aperture so as to restrict removal of the sealing element from the housing.
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公开(公告)号：US10529502B2
公开(公告)日：2020-01-07
申请号：US15712522
申请日：2017-09-22
Inventor： Ho Cheung Lau
Abstract: A lockable trigger mechanism for an electrical device, comprising: a housing; a trigger for biased movement relative to the housing; an actuator movably mounted to the housing such that in response to operation of the trigger, the actuator is movable along a movement axis from an OFF position inwardly of the housing towards an ON position, and movable along the movement axis from the ON position in a direction outwardly of the housing towards the OFF position; an electrical switch unit mounted to the housing for activation in response to movement of the actuator along the movement axis between its ON and OFF positions to close and open an electrical circuit of the electrical device respectively; and a locking mechanism comprising a first locking member, a second locking member and a biasing member configured for biasing movement of the first locking member relative to the second locking member.
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公开(公告)号：US10418195B2
公开(公告)日：2019-09-17
申请号：US15869794
申请日：2018-01-12
Inventor： Kin Yu Wong
Abstract: A contact lever for use in an electrical switch assembly so as to allow selectable movement within the switch assembly of a contact lever contact member from electrical connection with a first stationary contact member into electrical connection with a second stationary contact member, the contact lever including: first and second lever arms that are connected at respective first ends to the contact lever contact member; said first and second lever arms having respective second ends, and, said first and second lever arms being configured to extend away from the contact member and to terminate at their respective second ends; a gap disposed between the first and second lever arms which separates the first and second lever arms as they extend away from the contact member, and wherein the gap is configured to allow movement of a spring element of the switch assembly therethrough; and a bridge member configured for connection with the first and second lever arms so as to traverse the gap separating the first and second lever arms.
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公开(公告)号：US20180350531A1
公开(公告)日：2018-12-06
申请号：US15869794
申请日：2018-01-12
Inventor： Kin Yu Wong
Abstract: A contact lever for use in an electrical switch assembly so as to allow selectable movement within the switch assembly of a contact lever contact member from electrical connection with a first stationary contact member into electrical connection with a second stationary contact member, the contact lever including: first and second lever arms that are connected at respective first ends to the contact lever contact member; said first and second lever arms having respective second ends, and, said first and second lever arms being configured to extend away from the contact member and to terminate at their respective second ends; a gap disposed between the first and second lever arms which separates the first and second lever arms as they extend away from the contact member, and wherein the gap is configured to allow movement of a spring element of the switch assembly therethrough; and a bridge member configured for connection with the first and second lever arms so as to traverse the gap separating the first and second lever arms.
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Patent Agency Ranking
公开(公告)号：US20180096802A1
公开(公告)日：2018-04-05
申请号：US15712522
申请日：2017-09-22
Inventor： Ho Cheung LAU
CPC classification number: H01H3/20 , H01H9/06 , H01H9/061 , H01H13/08 , H01H13/562
Abstract: A lockable trigger mechanism for an electrical device, comprising: a housing; a trigger for biased movement relative to the housing; an actuator movably mounted to the housing such that in response to operation of the trigger, the actuator is movable along a movement axis from an OFF position inwardly of the housing towards an ON position, and movable along the movement axis from the ON position in a direction outwardly of the housing towards the OFF position; an electrical switch unit mounted to the housing for activation in response to movement of the actuator along the movement axis between its ON and OFF positions to close and open an electrical circuit of the electrical device respectively; and a locking mechanism comprising a first locking member, a second locking member and a biasing member configured for biasing movement of the first locking member relative to the second locking member.
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公开(公告)号：US20180061593A1
公开(公告)日：2018-03-01
申请号：US15685858
申请日：2017-08-24
Inventor： Kai Kei Poon
IPC: H01H11/00 , H01H13/50 , H03K17/965 , H01H13/14 , H01H13/26
CPC classification number: H01H11/0006 , H01H9/061 , H01H13/14 , H01H13/26 , H01H13/38 , H01H13/42 , H01H13/50 , H03K17/965
Abstract: A push-button switch capable of adjusting output power includes a housing. The housing includes a contact assembly and a power adjustment assembly therein. The contact assembly includes an upper terminal, a lower terminal and a connecting elastic plate below the upper terminal. A support seat is provided in the housing. An upper end of the support seat is provided with a first bracket. The first bracket is inserted through the connecting elastic plate. The first bracket is provided with a first slot. One end of the connecting elastic plate is fixedly connected to the upper terminal. Another end of the connecting elastic plate is engaged with the first slot. A drive mechanism is provided above the connecting elastic plate for driving the connecting elastic plate downward. The push-button switch has an ergonomic design.
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公开(公告)号：US20150237744A1
公开(公告)日：2015-08-20
申请号：US14619167
申请日：2015-02-11
Applicant: Defond Components Limited
Inventor： Chiu Keung Loong
CPC classification number: H05K5/0052 , H01H1/5805 , H01H9/06 , H01H9/52 , H01H9/547 , H05K7/2039
Abstract: An electrical switch assembly for an electrical appliance having an electrical load such as a motor, includes a housing with an opening, switch terminals, and an on/off mechanical switching module. The switch assembly includes an electronic control module operable with a semiconductor switching device to control operation of the load, and a heat sink in thermal contact with the switching device for dissipating heat. The heat sink is electrically conductive and is in electrical circuit connection with a first terminal of the switching device and one of the switch terminals. The heat sink closes the opening and forms part of the housing.
Abstract translation: 具有诸如电动机等电负载的电器的电气开关组件包括具有开口的壳体，开关端子以及开/关机械开关模块。 开关组件包括可与半导体开关装置一起操作以控制负载的操作的电子控制模块以及与开关装置热接触以散热的散热器。 散热器是导电的并且与开关装置的第一端子和开关端子中的一个处于电路连接。 散热器关闭开口并形成外壳的一部分。
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公开(公告)号：US11664710B2
公开(公告)日：2023-05-30
申请号：US17070767
申请日：2020-10-14
Applicant: Defond Electech Co., Ltd , Defond Components Limited
Inventor： Wai Man Wong
Abstract: A variable-speed control assembly for use in controlling speed of an electric motor of an electric device, the variable-speed control assembly including: a housing; a speed signaling circuit module located within the housing including a pair of spaced-apart electrically-conductive stationary contact members and a movable electrically-conductive contact member configured for movement relative to the pair of stationary contact members between at least one of an OFF position in which the movable contact member does not electrically connect the pair of stationary contact members, and, a plurality of ON positions in which the movable contact member electrically connects the pair of stationary contact members such that an electric current supplied to the speed signaling circuit module from a power supply of the electric device is able to flow between the pair of stationary contact members via the movable contact member; wherein the movable contact member includes an elastically-deformable material configured for deforming in to a plurality of different deformed configurations when arranged in each of the plurality of ON positions such that a contact area between the movable contact member and the pair of stationary contact members will vary in each of the plurality of ON positions resulting in an amount of electrical resistance across the movable contact member varying when arranged in each of the plurality of ON positions relative to the pair of stationary contact members; and whereby said speed signaling circuit module is configured for producing different output electrical signals configured for use in controlling speed of operation of the electric motor by reference to the variable electrical resistance across the movable contact member when arranged in each of the ON positions.
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公开(公告)号：US11464112B2
公开(公告)日：2022-10-04
申请号：US16721903
申请日：2019-12-19
Applicant: Defond Electech Co., Ltd. , Defond Components Limited
Inventor： Lei Zhang , Guo Zhu Zeng , Jian Hua Gong , Ding Wei Que , Yun Zhang
Abstract: A touch LED component and a touch device, and the touch LED component includes a metal cap, a touch button sheathed on an inner wall of the metal cap, and an LED lamp bead coupled to an inner wall of the touch button, a first through hole formed at the top of the metal cap, an induction pin installed at the bottom of the touch button, and an anode pin and a cathode pin installed on both sides of the bottom of the LED lamp bead respectively. The touch device includes a touch panel, a circuit board, and plural touch LED components. The touch LED component with high integration can be packaged by carrier tapes to facilitate automatic plug-ins and simplify production and assembling processes for mass production. The touch device has the features of simple structure, high reliability, good effect and long life.
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