An electrodynamic compensation connection structure between a moving guide rod and a conductive base
A technology of connection structure and conductive base, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of reducing the breaking success rate, increasing the contact resistance, affecting the current flow, etc., to reduce the contact resistance, increase the contact pressure, The effect of increasing contact pressure
Active Publication Date: 2019-02-01
XI AN JIAOTONG UNIV
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Problems solved by technology
[0002] At present, the connection between the moving guide rod and the conductive base of the molded case circuit breaker is mostly a soft connection. The soft connection will cause the moving guide rod to receive too much resistance during the opening process, which will affect the opening action of the mechanism. The success rate of breaking is reduced; at the same time, during the opening process, due to the large force on the soft connection, it is easy to cause the welding point to break and affect the flow
Another connection method is the friction electric contact method, which will not affect the movement of the moving guide rod, but the Holm force will be generated between the contact surfaces under the condition of power on, resulting in an increase in contact resistance and accelerated wear and other effects
Method used
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[0028] In one embodiment, an electrodynamic compensation connection structure between a moving guide rod and a conductive base is provided, the connecting structure includes a conductive base, a first moving guide rod and a second moving guide rod; the first moving guide rod Both ends of the first moving guide rod and the second moving guide rod have arc-shaped rotary joints; the first moving guide rod and the second moving guide rod are not in contact with each other, and have the ability of synchronous linkage; when energized, the two There is a frictional electrical contact between the conductive bases of the rotary joints of the two moving guide rods.
[0029] When the connecting structure is in use, the first moving guide rod and the second moving guide rod are relatively fixed to ensure synchronous movement. The rotary joints of the first moving guide rod and the second moving guide rod are arc-shaped, which can make them rotate in the limited space inside the circuit br...
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The present disclosure relates to an electrodynamic force compensation connecting structure between movable guide rods and a conductive pedestal. When the connecting structure is electrified, an electrodynamic force between the first movable guide rod and the second movable guide rod which are independent and move synchronously is used for compensating for a Holm force between each movable guide rod and the conductive pedestal, and increasing contact pressure between each movable guide rod and the conductive pedestal; further, a main shaft can provide an axial clamping force for the two movable guide rods by arranging a disc spring or a spring between the main shaft and each of the two movable guide rods, thus the influence of the Holm force between contact surfaces of each movable guide rod and the conductive pedestal is cancelled, and the contact pressure between each movable guide rod and the conductive pedestal is further increased, thereby guaranteeing good electric contact between the two movable guide rods and the conductive pedestal in an electrified state.
Description
technical field [0001] The present disclosure relates to the field of low-voltage circuit breakers, in particular, to an electrodynamic compensation connection structure between a movable guide rod and a conductive base. Background technique [0002] At present, the connection between the moving guide rod and the conductive base of the molded case circuit breaker is mostly a soft connection. The soft connection will cause the moving guide rod to receive too much resistance during the opening process, which will affect the opening action of the mechanism. The success rate of breaking is reduced; at the same time, during the opening process, due to the large force on the soft connection, it is easy to cause the welding point to break and affect the flow. Another connection method is the friction electric contact method, which will not affect the movement of the moving guide rod, but the Holm force will be generated between the contact surfaces under the condition of power on, ...
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IPC IPC(8): H01H71/10
CPCH01H71/10
Inventor 杨飞吴翊徐丹崔彧菲陈毅纽春萍荣命哲
Owner XI AN JIAOTONG UNIV