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A technology of miniature circuit breakers and switches, applied in the direction of protection switch operation/release mechanism, etc., can solve the problems of inability to realize miniature circuit breakers, and achieve the effects of simple structure, convenient operation and high safety factor

Active Publication Date: 2016-01-13
HUAWEI BOAO ELECTRIC POWER EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the miniature circuit breakers on the market cannot automatically adapt to the requirements of manual and automatic closing without manual switching

Method used

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Embodiment 1

[0024] Embodiment 1: as figure 1 , image 3 As shown, a miniature circuit breaker includes a miniature circuit breaker housing 1, a release device 4 and an operating mechanism 5 provided on the miniature circuit breaker housing 1, the operating mechanism 5 is linked with the switch core 9, and the switch core 9 A ratchet 8 is arranged on the top, and the ratchet 8 cooperates with the bull gear 2. The rear surface of the bull gear 2 is provided with a bull gear ratchet that can cooperate with the ratchet 8. An iron sheet 6 is arranged between the bull gear 2 and the ratchet 8. The bull gear can Mesh with the pinion 3, the pinion 3 is sleeved on the output shaft of the motor, the switch core 9 is provided with a handle 7, the handle 7 is connected with the switch core 9 through the rotating shaft 71, and the rotating shaft 71 can move along the axis of the switch core 9 move.

[0025] Such as image 3 , Figure 4 As shown, wherein, the rear surface of the large gear 2 is pro...

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Abstract

The invention discloses a miniature circuit breaker. The miniature circuit breaker comprises a miniature circuit breaker shell, the miniature circuit breaker shell is provided with a releaser and an operating mechanism, the operating mechanism is linked with a switch rotating core, the switch rotating core is provided with a ratchet wheel, the ratchet wheel is matched with a rack wheel, a rack wheel ratchet which can be matched with the ratchet wheel is mounted at the rear surface of the rack wheel, a metal plate is mounted between the rack wheel and the ratchet wheel, the rack wheel can be engaged to a pinion, the pinion sleeves an output shaft of an automatic tripping motor, the switch rotating core is provided with a handle, the handle is connected with the switch rotating core through a rotating shaft, and the rotating shaft is capable of moving axially along with the switch rotating core. The miniature circuit breaker is capable of automatically adapting to the manual closing and automatic closing requirements without manual switch, the structure is simple, the operation is facilitated, and the safety coefficient is high.

Description

technical field [0001] The invention belongs to the technical field of electric appliances, and in particular relates to a miniature circuit breaker. Background technique [0002] Circuit breaker: A mechanical switching device that can connect, carry and break current under normal circuit conditions, and can also carry and / or break current for a certain period of time when connecting or compound faults under specified abnormal circuit conditions. The function of the circuit breaker is well known in the industry. Under normal conditions, the electrical circuit is guaranteed to be unblocked; when the circuit fails to generate a short-circuit current or an overcurrent is caused by an overload, the electrical load is separated from the power supply network. For this reason, circuit breakers usually include dynamic and static contact sets. The miniature circuit breaker uses the electromagnetic release and the current heating element to realize short-circuit protection and over-c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/10H01H71/50H01H71/70
Inventor 朱学东范国平
Owner HUAWEI BOAO ELECTRIC POWER EQUIP