Self-push self-pull type structure for breaker
A circuit breaker and self-reversing technology, which is applied in the field of self-propelling and self-reversing structure of circuit breakers, can solve the problems of reduced product reliability, increased cost, quality dispersion, etc., and achieves the effects of good reliability and simple structure
Active Publication Date: 2008-07-23
LEGRAND LOW VOLTAGE ELECTRICAL APPLIANCES WUXI
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Problems solved by technology
[0002] In the prior art, there are many structural schemes for the two-position interlocking switching action of the circuit breaker, but most of them are relatively complicated. This complex structure will lead to quality dispersion, unreliability, and even increase in cost.
In some structures, spring structural parts are used for reset and positioning, but they tend to fall off during use, thus reducing the reliability of the product
Method used
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Embodiment Construction
[0012] As shown in the figure: there is a bracket 6 under the auxiliary contact 8, a main shaft 2 under the bracket 6, and a rotatable cantilever 3 on the main shaft 2. The lower end of the cantilever 3 is hinged with the middle of the main contact 1. The lower end of the main contact 1 is hinged on the base, and the upper end is provided with a movable contact that can be in contact with the static contact. On the bracket 6, the shaft 5 is used to hinge the rotating lever 4. The push rod 11 is in contact, and the lower end is in contact with the upper end of the cantilever 3; when the main contact 1 is closed or disconnected, the main contact 1 rotates around the hinge point at its lower end, and the cantilever 3 is driven to rotate through its connecting rod, and then the cantilever 3 drives The turning lever 4 acts, and then the turning lever 4 feeds back the closed and disconnected state of the main contact 1 to the auxiliary contact 8 .
[0013] The rotating lever 4, the ...
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The invention relates to a circuit breaker, in particular to a self-propelled and self-recovery structure of circuit breakers. According to the technical scheme provided by the invention, a supporting frame is arranged under an auxiliary contact, a main shaft is disposed below the supporting frame, a rotatable suspension arm is arranged on the main shaft, and the lower end of the suspension arm is hinged with the middle portion of a main contact. The invention is characterized in that a rotating lever is hinged on the supporting frame by employing a shaft, and the upper end of the rotating lever is contacted with a push rod inside the auxiliary contact and the lower end is contacted with the upper end of the suspension arm. The suspension arm is driven to rotate when the main contact is closed up or disconnected, the rotating lever is driven in motion by the suspension arm, and then the state of close and disconnection of the main contact is interlocked and fed back to the auxiliary contact. The invention can be applied to conversion of the auxiliary contacts of the circuit breakers, interlocking conversion between the main contact state and the auxiliary contact state can be realized through one rotating constructional element, and the structure is simple, speedy and reliable, and is perfect in manufacturability.
Description
technical field [0001] The invention relates to a circuit breaker, in particular to a self-propelling and self-recombining structure of the circuit breaker, which is mainly used in the circuit breaker to realize the transition between operating states. Background technique [0002] In the prior art, there are many structural schemes for the interlocking switching action of the two positions of the circuit breaker, but most of them are relatively complicated. This complex structure will lead to quality dispersion, unreliability, and even cost increase. In some structures, spring structural parts are used for reset and positioning, but they tend to fall off during use, thus reducing the reliability of the product. Contents of the invention [0003] The purpose of the present invention is to design a self-propelling and self-recovering structure of a circuit breaker to simplify the structure and improve the reliability of the product. [0004] According to the technical solu...
Claims
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IPC IPC(8): H01H71/10
Inventor 李惠敏王振宇康明于敏
Owner LEGRAND LOW VOLTAGE ELECTRICAL APPLIANCES WUXI