Multi-electrode rotary double-breakpoint circuit breaker with plastic shell
A molded case circuit breaker and double breakpoint technology, which is applied in the field of electricity, can solve the problems that the contact and disconnection between the moving contact and the static contact cannot be effectively guaranteed, and achieve the goals of avoiding deformation, reducing friction and prolonging the service life Effect
Inactive Publication Date: 2011-08-03
SHANGHAI LIANGXIN ELECTRICAL
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Problems solved by technology
[0003] The object of the present invention is to provide a multi-pole rotating double-breakpoint molded case circuit breaker, said multi-pole rotating double-breakpoint molded case circuit breaker to solve The technical problem that the contact and disconnection between the moving contact and the static contact cannot be effectively guaranteed
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Embodiment 1
[0014] Such as figure 1 , figure 2 , image 3 , Figure 4 and Figure 5 As shown, the multi-pole rotary double-breakpoint molded case circuit breaker of the present invention includes an operating mechanism 1 and a plurality of unit boxes 3, and the plurality of unit boxes 3 are arranged side by side to form multiple poles of the circuit breaker. The operating mechanism 1 and the adjacent A connection mechanism 2 is provided between the unit boxes 3, and a connection mechanism 2 is also provided between adjacent unit boxes 3. A contact system is provided in the unit box 3, and the contact system includes a static contact 34 and a static contact 35. and a moving contact module 33, the moving contact module 33 is composed of a rotor 36 and two moving contacts 37 embedded in the rotor, wherein a first transmission shaft 41 and a second transmission shaft 42 are also arranged in the circuit breaker The rotor 36 is provided with a first hole 361 and a second hole 362. The conn...
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The invention relates to a multi-electrode rotary double-breakpoint circuit breaker with a plastic shell, which comprises an operating mechanism, a plurality of unit boxes and connecting mechanisms; a first transmission shaft and a second transmission shaft are arranged in the circuit breaker; each connecting mechanism comprises a connecting rod, a bearing and a supporting shaft; the first transmission shaft passes through all first connection holes and first holes of all rotors and is fixedly connected with a lower connecting rod of the operating mechanism; and the second transmission shaft passes through second connection holes of all the connecting rods and second holes of all the rotors. In the circuit breaker, supporting points are arranged at the two ends of the supporting shaft of the connecting mechanism to form a simply-supported beam structure and avoid the deformation of the connecting mechanism; the connecting rod is connected with the bearing in a interference fit way, the bearing is connected with the supporting shaft in a interference fit way, so that the fit clearance is reduced, the positioning is accurate, the frictional force of the connecting rods during the movement is reduced, and the service life of the circuit breaker is prolonged; and the supporting points are arranged among the unit boxes so as to prevent each transmission shaft from deformation and ensure that moving and static contacts in the unit boxes away from the operating mechanism are in reliable contact with one another.
Description
Technical field: [0001] The invention relates to the field of electricity, in particular to a molded case circuit breaker, in particular to a multi-pole rotating double break point molded case circuit breaker. Background technique: [0002] In the prior art, in the multi-pole low-voltage rotary double-breakpoint molded case circuit breaker, the connecting mechanism is located between the single-pole unit boxes and is hinged on the side plate of the circuit breaker operating mechanism through the connecting piece, which is used to connect the circuit breaker operating mechanism, and It drives the moving contact modules of multiple unipolar units to rotate to complete the closing and opening operations. Chinese Invention Patent Grant No. CN1077818A discloses a multi-pole circuit breaker with a single-pole unit. This structural form has the following disadvantages. First, there are circular cavities for accommodating the rotors in the multiple single-pole units of the circuit ...
Claims
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IPC IPC(8): H01H71/10H01H73/04H01H71/02
Inventor 刘正刚
Owner SHANGHAI LIANGXIN ELECTRICAL