Load switch
A technology of load switch and moving reed, applied in electrical switches, contacts, electrical components, etc., can solve the problems of damage to the load switch, shorten the life of the load switch, increase the contact resistance, etc., and improve the ability to resist inrush current. , The effect of increasing the pressure between the contacts and reducing the contact resistance
Pending Publication Date: 2020-02-04
时太工业科技(上海)有限公司
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Problems solved by technology
[0003] The existing load switch usually uses the contact and separation of the moving contact and the static contact to realize the connection and cut-off of the circuit. When the load switch is subjected to a large power load and an ultra-high short-term The contact pressure between the point and the static contact is not enough, resulting in an increase in the contact resistance, and a large amount of heat will be generated when the contacts are in contact, which will cause the contacts to melt and bond, affect the performance of the load switch, and even damage the load switch, making the load switch shortened lifespan
Method used
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[0016] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention.
[0017] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present disclosure belongs. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Up", "Down", "Left", "Right" and so on are only used to indicate the relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0018] To keep the following description of the present invention clear and concise, detailed descri...
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The invention discloses a load switch comprising a movable conductive piece, a static conductive piece, a movable reed and a push card, wherein the movable reed has a first end and a second end, the first end of the movable reed is fixedly connected to the movable conductive piece, the second end of the movable reed is connected to the push card, the push card can drive the second end of the movable reed to move in the direction closer to or farther from the static conductive piece to enable contact or separation of a movable contact and a static contact, the movable reed is formed with a U-shaped portion that is located between the first end and the movable contact; the U-shaped portion is composed of a first flat plate portion, a second flat plate portion, and an arc-shaped portion connecting the first flat plate portion and the second flat plate portion; the length of the first flat plate portion and the second flat plate portion is greater than two times of the distance between thefirst flat plate portion and the second flat plate portion. The load switch provided by the invention improves the ability to resist inrush current and prolongs the service life.
Description
technical field [0001] The invention relates to a load switch, in particular to a load switch applied to smart meters and industrial automation control systems. Background technique [0002] At present, the load switch is widely used in smart meters and industrial automatic control systems, and the load switch plays the role of switching on and off the circuit. [0003] The existing load switch usually uses the contact and separation of the moving contact and the static contact to realize the connection and cut-off of the circuit. When the load switch is subjected to a large power load and an ultra-high short-term The contact pressure between the point and the static contact is not enough, resulting in an increase in the contact resistance, and a large amount of heat will be generated when the contacts are in contact, which will cause the contacts to melt and bond, affect the performance of the load switch, and even damage the load switch, making the load switch Shorter lif...
Claims
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IPC IPC(8): H01H1/54
CPCH01H1/54
Inventor 何百川
Owner 时太工业科技(上海)有限公司