Double-breakpoint contactor contact structure adopting flexible coupling device
A soft connection and double break point technology, applied in the direction of contacts, relays, electromagnetic relays, etc., can solve the problems that affect the service life and breaking capacity of the contactor, the contact cannot be completely in good contact, and the contact degree is reduced, so as to achieve the guaranteed strength , reduced weight, and reasonable structure
Inactive Publication Date: 2012-06-27
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology
On the other hand, there is contact resistance at the contact point of the contact. At the moment of normal connection and breaking current, the contact will generate local high temperature. After long-term use, the surface of the contact will oxidize.
The above reasons prevent the contacts from being fully in good contact, the contact resistance between the contacts gradually increases, and the contact degree gradually decreases, which affects the service life and breaking capacity of the contactor
The electrical life of the AC contactors currently in use is often much shorter than the mechanical life
Method used
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[0020] Such as figure 1 As shown, the double break point low-voltage contactor contact structure using a flexible connection device includes a first static contact unit 101, a second static contact unit 102, a first moving contact unit 201, and a second moving contact unit. 202, the elastic mechanism 4, the linkage device 5, the soft connection 6 and the insulating support 7; the first moving contact unit 201 and the second moving contact unit 202 are fixedly connected through the soft connection 6; the elastic mechanism 4 is fixedly installed Between the first moving contact unit 201 and the second moving contact unit 202 ; the insulating support 7 is fixedly connected to the elastic mechanism 4 via the linkage device 5 .
[0021] The elastic mechanism 4 of the present invention can adopt a leaf spring structure.
[0022] see image 3 In the present invention, protrusions 12 are respectively provided at the ends of the insulating bracket 7; card slots 9 are provided ...
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The invention relates to a contact structure, in particular to a double-breakpoint contactor contact structure. The double-breakpoint contactor contact structure comprises a first stationary contact unit (101), a second stationary contact unit (102), a first moving contact unit (201), a second moving contact unit (202), an elastic mechanism (4), a linkage device (5), a flexible coupler (6) and an insulation bracket (7), wherein the first moving contact unit (201) and the second moving contact unit (202) are fixedly connected by the flexible coupler (6); the elastic mechanism (4) is fixedly arranged between the first moving contact unit (201) and the second moving contact unit (202); the insulation bracket (7) is fixedly connected with the elastic mechanism (4) by the linkage device (5); and the elastic mechanism (4) adopts a flakey spring structure. The double-breakpoint contactor contact structure has a high drop-out voltage level, contact voltage on two sides can be balanced, so that the contacts effectively and tightly contact, and the self-cleaning function of the contact surface is realized so as to prolong the service life of the contact.
Description
technical field [0001] The invention relates to a contact structure, in particular to a contact structure of a double-break low-voltage contactor. Background technique [0002] The contactor is an automatic control electrical appliance, mainly used for frequently connecting or breaking AC and DC circuits. It has a large control capacity and can be operated from a long distance. It can realize timing operation, chain control, various quantitative control and voltage loss by cooperating with relays. and undervoltage protection. [0003] The existing AC contactor used in production includes a pair of contacts, which are usually set so that the static contacts are fixed. back and forth motion. On the one hand, after repeated opening and closing, the contacts without current or with current are gradually worn due to mechanical or electrical effects, and the surface is gradually uneven. On the other hand, there is contact resistance at the contact point of the contact. At the m...
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IPC IPC(8): H01H50/54H01H1/50
Inventor曹云东刘晓明来常学孙鹏侯春光李静赵鹤然
OwnerSHENYANG POLYTECHNIC UNIV