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Plug-in base of molded case circuit breaker

A molded case circuit breaker, plug-in technology, applied in the direction of circuits, parts of protective switches, electrical components, etc., can solve problems affecting the safety and reliability of equipment, unstable contact pressure, temperature rise, etc., to achieve temperature Excellent performance, reduced contact internal resistance, and low energy consumption

Pending Publication Date: 2021-12-31
SHANGHAI LEADING CONNECTION MECHATRONICS TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Start the motor 6-7 times for 20-30 seconds. During the main circuit connection, the resistance value should not change greatly, and the connection pressure should not change greatly, otherwise the temperature rise will double; In the application of plug-in motor starting, due to the unstable contact pressure between the plug chucks, the plug is often burned, which affects the safety and reliability of equipment operation

Method used

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  • Plug-in base of molded case circuit breaker
  • Plug-in base of molded case circuit breaker
  • Plug-in base of molded case circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as Figure 1-11 The plug-in base of a molded case circuit breaker shown includes a plug 1, a fixed column 2, a cover 3, a base shell 4, an outer busbar 5, a fixed angle plate 6, a flexible connection plate 7, a pressure plate 8, a limit The rod 9 and the elastic member 10; the flexible connecting plate 7 is fixed to the outer busbar 5, and is installed on the base housing 4 through the fixed angle plate 6; the limit rod 9 passes through the elastic member 10, the pressure plate 8, and the flexible connecting plate 7, Placed in the base shell 4; the cover 3 is provided with a limit rod 9 and fastened with the base shell 4; the flexible connecting plate 7 can move in the base shell 4, when the plug 1 and the flexible connecting plate 7 are plugged When connecting, the plug 1 can automatically adjust the alignment to align with the gap between the two flexible connecting plates 7, and the plug 1 pushes and compresses the elastic member 10 to generate a clamping force,...

Embodiment 2

[0038] Such as Figure 12 A plug-in base of a molded case circuit breaker is shown, including a plug 1, a connector 11, a peripheral support structure 12 of the connector, and an outer busbar 5; the plug-in base is provided with a peripheral support structure 12 of the connector, and the peripheral support structure of the connector 12 is provided with a connector 11, and the plug 1 is connected to the outer busbar 5 through the connector 11; the connector 11 is set as an elastic connector, and the peripheral supporting structure 12 of the connector around the elastic connector is provided with a The position-limiting structure restricts the movement of the elastic connector in the second direction Y, prevents the movement of the connector in the second direction Y and affects the connection effect, the guiding structure for guiding the movement of the elastic connector and the movement of the elastic connector Space. The elastic connector includes a flexible connecting plate...

Embodiment 3

[0040] Such as Figure 13 A plug-in base of a molded case circuit breaker is shown, including a plug 1, a connector 11, a peripheral support structure 12 of the connector, and an outer busbar 5; the plug-in base is provided with a peripheral support structure 12 of the connector, and the peripheral support structure of the connector 12 is provided with a connector 11, and the plug 1 is connected to the outer busbar 5 through the connector 11; the connector 11 is set as an elastic connector, and the peripheral supporting structure 12 of the connector around the elastic connector is provided with a The limit structure, the guide structure for guiding the movement of the elastic connector and the space for the elastic connector to move. The elastic connector includes a flexible connecting plate 7; the flexible connecting plate 7 includes a flexible part 701, an outer busbar connecting part 702 and a plug connecting part 703; a flexible part 701 is provided between the outer busba...

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PUM

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Abstract

The invention provides a plug-in base of a molded case circuit breaker. The molded case circuit breaker can be connected with and disconnected from an electric loop in a plugging manner through the plug-in base. In order to achieve the purpose, the plug-in base of the molded case circuit breaker is designed and comprises a plug, a fixing column, a cover, a base shell, an outer busbar, a fixing angle plate, a flexible connector, a pressing plate, a limiting rod and an elastic piece, wherein the flexible connector and the outer busbar are fixed to form a connector, and the connector penetrates through and is installed in an installation base shell and is buckled and fixed through a cover. The flexible connector is arranged in the connector, and the flexible connector can be aligned with a connecting hole in the cover while moving up and down in the base shell through a pressing plate guide groove and a limiting characteristic in the base shell, so that when the plug is connected with the flexible connector, the plug can be automatically adjusted to be aligned with the flexible connector, push and compress the elastic piece and generate clamping force, and the flexible connector and the plug are tightly attached and clamped. The plug-in base has the characteristics of reliable contact, large clamping force, large contact area, low energy consumption, low copper consumption and the like.

Description

technical field [0001] The invention relates to a plug-in base of a molded case circuit breaker, which belongs to the technical field of switchgear. Background technique [0002] The plug-in base in the molded case circuit breaker is the key accessory product in the plug-in or withdrawable switchgear. At present, the main circuit connectors on the market are usually linear spring coil structures, and the contact between the plug chucks The pressure is unstable; and the contact surface between the plug of the circuit breaker and the chuck of the conductive sheet is very small, which is mainly based on line contact. Since the circuit breaker often needs to carry a large current, the electric repulsion generated by the large current makes the gap between the plug and the chuck It is necessary to ensure good contact pressure, especially in the motor starting scheme, which needs to withstand the instantaneous current of 5 times the motor starting current. Start the motor 6-7 tim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/02H01R13/502H01R13/629H01R25/16
CPCH01H71/02H01R25/161H01R13/502H01R13/629
Inventor 潘斌华李勇朱小民
Owner SHANGHAI LEADING CONNECTION MECHATRONICS TECH CO LTD
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