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Circuit breaker

A circuit breaker and circuit board technology, which is applied to circuit breaker components, circuits, and protection switch components, etc., can solve the problems of large overall space size, unreliable position detection, and inappropriate transmission, etc., so as to facilitate the overall design and layout, the internal layout design is reasonable, and the effect of reducing the overall specification

Pending Publication Date: 2020-11-24
ZHEJIANG CHINT ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The existing circuit breaker electric mechanism realizes automatic closing by driving the handle mechanism, and the circuit breaker trips to realize automatic opening by driving the handle mechanism or by driving the lock of the operating mechanism. The corresponding matching mechanism is easy to wear, and in order to realize automatic The non-interference between opening and closing and manual opening and closing makes the structure more complicated
Moreover, in the electric mechanism of the existing circuit breaker, the motor control is processed by the position sensor and the chip. The position sensor transmits the closing and opening positions of the circuit breaker to the chip, and the chip controls the motor to rotate forward or reverse to realize closing and opening. And return to the initial position (that is, without affecting the manual opening and closing position of the circuit breaker), the chip is susceptible to external interference, resulting in unreliable position detection and affecting the reliability of the circuit breaker operation
[0004] 2. The electric mechanism of the existing circuit breaker is hard-driven by the gear. After a long time of use, the structural parts are prone to wear and tear, which often leads to the situation that the transmission is not in place, which is manifested as the circuit breaker is not in place. Closing or opening is not in place
[0005] 3. The existing circuit breaker is inconvenient to operate when switching between the manual working mode and the automatic working mode, and the working reliability of the manual and automatic switching device is not high
[0006] 4. Existing circuit breakers have too large overall space dimensions, which do not meet the trend and requirements of miniaturization of circuit breakers.
[0007] 5. The current sampling device of the existing circuit breaker is realized by a manganin shunt. The size of the manganin shunt is large and the temperature rise is high, which affects the design and layout of the circuit breaker

Method used

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Examples

Experimental program
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Effect test

no. 1 example

[0057] Such as Figure 1-20 Shown is the first embodiment of the circuit breaker of the present invention, which is the first embodiment of the first type of circuit breaker.

[0058] Such as figure 1 , 9 As shown in -12, the circuit breaker of the present invention includes a circuit breaker casing 1 and a button mechanism 2, an electric mechanism 3 and an operating mechanism 5 arranged in the circuit breaker casing 1. Drive the circuit breaker to close / open to realize manual opening and closing; the electric mechanism 3 cooperates with the button mechanism 2 and or the operating mechanism 5 to drive the circuit breaker to close / open through the operating mechanism 5 to realize automatic opening and closing.

[0059] preferred, such as figure 1 As shown, the electric mechanism 3 drives and cooperates with the transmission part 501 of the operating mechanism 5 to realize closing of the circuit breaker, and drives and cooperates with the button mechanism 2 to realize opening o...

no. 3 example

[0088] preferred, such as Figure 14-16 Shown is the third embodiment of the circuit breaker of the present invention, which is the third embodiment of the first circuit breaker.

[0089] Such as Figure 14-16 As shown, the difference between this embodiment and the circuit breaker of the first embodiment is that the circuit breaker also includes a manual-automatic switching device arranged in the circuit breaker casing 1 . The circuit breaker is a plug-in circuit breaker, and the circuit breaker housing 1 is basically a parallelepiped structure, including a circuit breaker operation interface 1i arranged at one end thereof, a button assembly hole and an outlet terminal 881 arranged on the circuit breaker operation interface 1i , one end of the button mechanism 2 is inserted in the button assembly hole, and the other end of the circuit breaker housing 1 is provided with an incoming line terminal 880; the circuit breaker also includes a manual-automatic switching device arranged...

no. 4 example

[0107] preferred, such as figure 1 , 17 -20 shows the fourth embodiment of the circuit breaker of the present invention, which is the fourth embodiment of the first circuit breaker.

[0108] preferred, such as figure 1 , 17As shown in and 18, the circuit breaker includes a circuit breaker case 1, and a button mechanism 2, an electric mechanism 3, an operating mechanism 5, a protection mechanism, an arc extinguishing system 7, a current sampling device 112, and an incoming line terminal arranged in the circuit breaker case 1 880 and outlet terminal 881; the button mechanism 2 drives the circuit breaker to close / open through the operating mechanism 5; the electric mechanism 3 drives the circuit breaker to close / open through the button mechanism 2 and or the operating mechanism 5; the protection The mechanism cooperates with the operating mechanism 5 to trigger the tripping of the circuit breaker; the incoming terminal 880 and the outgoing terminal 881 are respectively arrange...

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Abstract

The invention relates to the field of low-voltage electric appliances, in particular to a circuit breaker. A button mechanism drives the circuit breaker to be closed / opened through an operating mechanism, and an electric mechanism drives the circuit breaker to be closed / opened through the button mechanism and / or the operating mechanism. The protection mechanism is matched with the operating mechanism to trigger the circuit breaker to trip. The wire inlet terminal and the wire outlet terminal are arranged at the two ends of the circuit breaker shell respectively. The operating mechanism is arranged in the middle of the circuit breaker shell. The arc extinguishing system and the protection mechanism are arranged between the operation mechanism and the wire inlet terminal side by side. The electric mechanism is arranged between the wire outlet terminal and the operating mechanism, and the electric mechanism and the wire outlet terminal are arranged on the same side of the button mechanism; the current sampling device is arranged between the protection mechanism and the wire inlet terminal, and the two ends of the sampling device are electrically connected with the protection mechanismand the wire inlet terminal respectively. The circuit breaker is reasonable in internal layout, compact in overall structure and high in safety.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, in particular to a circuit breaker. Background technique [0002] Most existing plug-in circuit breakers have the following problems: [0003] 1. The existing circuit breaker electric mechanism realizes automatic closing by driving the handle mechanism, and the circuit breaker trips to realize automatic opening by driving the handle mechanism or by driving the lock of the operating mechanism. The corresponding matching mechanism is easy to wear, and in order to realize automatic The non-interference between opening and closing and manual opening and closing makes the structure more complicated. Moreover, in the electric mechanism of the existing circuit breaker, the motor control is processed by the position sensor and the chip. The position sensor transmits the closing and opening positions of the circuit breaker to the chip, and the chip controls the motor to rotate forward or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/02H01H71/08H01H71/10H01H73/18H01H71/00
CPCH01H71/00H01H71/0207H01H71/0264H01H71/08H01H71/10H01H73/18
Inventor 杨安顾斌斌卢科军
Owner ZHEJIANG CHINT ELECTRIC CO LTD
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