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Load assembly with over-rotation control and electrical switchgear using same

A technology of electrical switches and components, which is applied in the direction of power devices, electric switches, high-voltage/high-current switches, etc. inside the switch, and can solve the problems of ineffective catch, wear or damage

Active Publication Date: 2016-09-21
EATON INTELLIGENT POWER LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the catch 14 is generally configured to cooperate with the cam(s) 12 to prevent such excessive rotation of the camshaft 8, it is possible, especially after prolonged use, that the impact surface 22 of the catch 14 and / or the corresponding The catch surface 24 of the catch cam 12 can become worn or damaged (see, for example, damaged or deformed surfaces 22', 24' in FIG. 1B ), resulting in a less effective catch

Method used

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  • Load assembly with over-rotation control and electrical switchgear using same
  • Load assembly with over-rotation control and electrical switchgear using same
  • Load assembly with over-rotation control and electrical switchgear using same

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Embodiment Construction

[0021] Directional expressions such as clockwise, counterclockwise, left, right, up, down, and their derivatives used in this specification refer to the orientation of elements shown in the drawings and do not limit the claims book, unless expressly noted.

[0022] As the expression used in this specification, two or more components are "coupled" together, which shall mean that the components are connected together directly or through one or more intermediate components.

[0023] As used in this specification, the term "number" shall refer to one or an integer greater than one (ie, a plurality).

[0024] Figure 2-7 A loading assembly 200 is shown for an electrical switching apparatus, such as, but not limited to, circuit breaker 102 . The circuit breaker 102 includes a housing 104, separable contacts 106 enclosed by the housing 104 (in figure 2 shown in simplified form), and for opening and closing the separable contacts 106 ( figure 2 ) of the operating mechanism 108 (in...

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Abstract

A loading assembly (200) for an electrical switching apparatus, such as a circuit breaker (102), is provided. A circuit breaker (102) includes a housing (104), separable contacts (106), and an operating mechanism (108) for opening and closing the separable contacts (106). The loading assembly (200) includes a stored energy mechanism, such as a closing spring (204), movable between a loading and an unloading position. A cast member (218) is coupled to and moves with the closing spring (204). The cast member (218) includes a raised portion (220). A camshaft (208) is pivotally coupled to the housing (104) and includes a number of cams (210, 212). A catch (214) also pivotally coupled to the housing (104) includes an impact surface (224) and a protrusion (226). The impact surface (224) cooperates with a corresponding one of the cams (212) to prevent excessive rotation of the camshaft (208). The protrusion (226) of the catch (214) cooperates with the protrusion (220) of the cast member (218) to maintain the gap between the catch (214) and the cam (212). required relationship.

Description

[0001] Cross-references to related applications [0002] This application claims the benefit of US Patent Application Serial No. 13 / 306,374, filed November 29, 2011, which application is incorporated herein by reference. technical field [0003] The present invention relates generally to electrical switching apparatus, and more particularly to loading assemblies for electrical switching apparatus. The invention also relates to electrical switching devices such as circuit breakers. Background technique [0004] Electrical switching devices, such as circuit breakers, provide protection to electrical systems from electrical fault conditions, such as current overloads, short circuits, abnormal voltages, and other fault conditions. Typically, a circuit breaker includes an operating mechanism that opens an assembly of electrical contacts in response to a fault condition, such as detected by a trip unit, to interrupt current flow through conductors of the electrical system. The e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H3/30H01H33/40
CPCH01H3/3015H01H33/40
Inventor A·L·戈特沙尔克R·M·斯莱皮安
Owner EATON INTELLIGENT POWER LTD