Clamping buckle mechanism of miniature circuit breaker

Abstract

The invention relates to a clamping buckle mechanism of a miniature circuit breaker. The problem that an existing miniature circuit breaker is inconvenient to operate and poor in locating stability in the process of mounting guide rails is mainly solved. The clamping buckle mechanism comprises a base and a clamping plate, guide rails are arranged on the two sides of the base, an upward-protruding limiting table is arranged in the middle of the base, an inclined slip face is arranged on one side of the limiting table, a clamping opening is formed in the other side of the limiting table, the two ends of the clamping plate are a sliding-in end and a sliding-out end respectively, a boss is arranged at the sliding-in end, two corresponding elastic ribs are arranged in the middle of the clamping plate and comprise the first elastic rib and the second elastic rib, the first elastic rib and the second elastic rib are correspondingly distributed to form a neck opening with the middle contracted, a first opening and a second opening, the two ends of the first opening and the two ends of the second opening are open, the first opening is in slip fit with the limiting table, the second opening is in clamping fit with the limiting table, the clamping plate slips along the guide rails to sequentially form the boss to slide over a slip plane, the limiting table slides over the first opening and opens the neck opening to slide in the second opening, and the clamping opening is in one-way limiting fit with the boss. Due to the fact that the unique calabash-shaped locating structure is adopted in the clamping buckle mechanism of the miniature circuit breaker, when the miniature circuit breaker and the guide rails are mounted, the advantages of being convenient to operate, precise in locating, high in locating stability, good in clamping effect, long in service life and the like are achieved.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a buckle mechanism of a small circuit breaker. Background technique [0002] The miniature circuit breaker is installed on the guide rail or the distribution box through buckles. When the buckles on the existing miniature circuit breakers are installed on the guide rails, there are problems of inconvenient installation and difficult disassembly. Patent No. 201120204061.1 discloses a buckle mechanism for mounting small low-voltage electrical appliances on guide rails, including a bottom plate. The bottom plate is provided with buckles, and the middle position of the buckle is provided with mutually symmetrical ribs. The card platform for engaging the ribs, the ribs are arc-shaped, and the card platform is provided with a card slot matching the ribs. The buckle mechanism uses two arc-shaped ribs to engage with the arc-shaped grooves of the card table on the side to achieve the purpose of posit...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the shortcomings and deficiencies of the background technology, the present invention provides a buckle mechanism of a small circuit breaker, which solves the problems of inconvenient operation and poor positioning stability of the existing small circuit breaker when it is installed on the guide rail

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