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Operating mechanism of small circuit breaker

A technology for small circuit breakers and operating mechanisms, which is applied to the operation/release mechanism of protection switches, circuits, and parts of protection switches, etc. Good stability and simple structure

Active Publication Date: 2014-06-18
DONGGUAN JIYE ELECTRICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing small circuit breaker operating mechanism has many parts, complex structure and large tripping force, it is easy to slip after frequent operation, and the stability is poor. This kind of operating mechanism not only increases the cost, but also is inconvenient in the production and installation process.

Method used

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  • Operating mechanism of small circuit breaker
  • Operating mechanism of small circuit breaker
  • Operating mechanism of small circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment one: see Figure 1 to Figure 4 , an operating mechanism for a small circuit breaker, including a handle 11, a connecting rod 12, a push rod 21, a block 22, a support 23, a drive plate 24 and a contact arm 25, and also includes a handle shaft 10 and a pivot 20, so The handle shaft 10 and the pivot shaft 20 are respectively fixed inside the housing 30 of the miniature circuit breaker;

[0049] The handle 11 is installed on the handle shaft 10, the drive plate 24, the support member 23, and the push rod 21 are installed on the pivot 20 in turn; the first end of the connecting rod 12 is eccentrically hinged on the handle 11, and the The second end of the connecting rod 12 is hinged with the first end of the push rod 21; one end of the support member 23 is provided with a fixed mandrel 231, and the first end of the stopper 22 and the support member 23 pass through the fixed mandrel. The shaft 231 is hinged; the second end of the stop block 22 is provided with a t...

Embodiment 2

[0069] The difference between this embodiment and Embodiment 1 is that the elastic resistance member is a second torsion spring arranged between the block 22 and the support member 23, and the second torsion spring is installed on the fixed mandrel of the support member 23 231 , one end of the second torsion spring presses the protruding block of the stopper 22 , and the other end of the second torsion spring presses the protruding block of the support member 23 . The second torsion spring acts on the stopper 22 and the support member 23, effectively avoiding easy slipping between the stopper 22 and the push rod 21, the design is simple, and the blocking effect is good.

[0070] The beneficial effects of the present invention are:

[0071] (1) The small circuit breaker operating mechanism of the present invention has fewer linkage parts, simple structure, and low cost. The support member 23 and the driving plate 24 are connected by the first torsion spring 26, and the stabilit...

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Abstract

The invention relates to the technical field of a circuit breaker, in particular to an operating mechanism of a small circuit breaker, which comprises a handle, a connecting rod, a push rod, a stop piece, a support piece, a drive plate and a contact arm. The operating mechanism of the small circuit breaker further comprises a handle shaft and a pivot shaft which are respectively fixed inside a shell of the small circuit breaker. The handle is installed on the handle shaft. The drive plate, the support plate and the push rod are installed on the pivot shaft orderly. One end of the connecting rod is eccentrically hinged on the handle, and the second end of the connecting rod is hinged with the first end of the push rod. The stop piece is provided with a stop groove. The second end of the push rod is matched with the stoop groove. A first torsional spring is arranged between the drive plate and the support plate. When the push rod drives the stop piece to move, the stop piece drives the support piece to move. Meanwhile, the support piece drives the drive plate to move through the first torsional spring. The operating mechanism of the small circuit breaker, provided by the invention, is simple in structure, lower in cost and better in stability.

Description

technical field [0001] The invention relates to the technical field of circuit breakers, in particular to an operating mechanism of a small circuit breaker. Background technique [0002] A miniature circuit breaker, also known as an automatic switch, is an electrical appliance that not only has the function of a manual switch, but also can automatically protect against voltage loss, undervoltage, overload, and short circuit. When a serious overload or short circuit occurs in the circuit, the circuit breaker can automatically cut off the circuit. Its function is equivalent to the combination of a fuse switch and an overheating relay, etc., and generally does not need to replace parts after breaking the fault, so it is obtained a wide range of applications. [0003] Miniature circuit breakers are generally composed of thermal magnetic tripping devices, arc extinguishing systems, wiring systems, operating mechanisms, etc. The performance of the operating mechanism directly aff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H71/10
CPCH01H71/526H01H71/2463
Inventor 匡红勇苏洪新
Owner DONGGUAN JIYE ELECTRICAL EQUIP CO LTD
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