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Mechanical interlocking device for electrical apparatus, and use thereof in motor start assembly

A technology of electrical devices and mechanical connections, applied in the direction of electrical components, circuits, relays, etc., can solve the problems of reducing safety and operating stability

Inactive Publication Date: 2005-10-12
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One such problem is the need to store connection devices of different sizes, another and more important problem is the reduced safety and operational stability

Method used

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  • Mechanical interlocking device for electrical apparatus, and use thereof in motor start assembly
  • Mechanical interlocking device for electrical apparatus, and use thereof in motor start assembly
  • Mechanical interlocking device for electrical apparatus, and use thereof in motor start assembly

Examples

Experimental program
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Effect test

Embodiment Construction

[0017] refer to figure 1 , illustrates the interlocking device 1 of the present invention in an upright perspective view. The locking device 1 comprises a housing 2 , a pair of plungers 3 , 4 accommodated in the housing, of which only one plunger 3 can be seen in the figure, and a locking element 8 . The plungers 3 and 4 are movably accommodated in the casing and are separated and replaceable in the axial direction. Each plunger has a protrusion 6 extending through a slot 7 formed on one side of the housing for direct or indirect mechanical connection to an electrical device (not shown), respectively, fitted on each side of the housing. A blocking element 8 is pivotally housed in the housing 2 and is controlled by the plungers 3, 4 to interlock the electrical device in a manner further described below. The housing 2 in turn forms an attachment 9, by means of which the interlocking device can be screwed or inserted into a specially formed attachment base in the electrical dev...

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PUM

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Abstract

Device for interlocking of electric apparatuses, comprising a blocking element (8) that is operated by the associated electric apparatuses via separate, moving plungers (3, 4) to be pivoted similar to a cradle into alternative positions wherein the blocking element is effective for preventing an unintentional and simultaneous circuit closing motion in both apparatuses, and for securing at all times that only one of the apparatuses may be operative.

Description

technical field [0001] This invention relates to mechanical interlocking of electrical installations and equipment, and more particularly the invention relates to interlocking devices which effectively prevent the undesired simultaneous actuation of two electrical connections. Background technique [0002] Even more particularly, the present invention relates to an interlock mechanically connected, directly or indirectly, to each of two electrical devices by a pair of plungers slidably disposed within the interlock. The plungers are housed for parallel reciprocating movement, and each plunger is configured to engage an associated electrical device such that the plunger moves in a first direction when making an electrical circuit and in a second direction when breaking an electrical circuit . A latching element having a substantially quarter-circular cross-section extends transversely across the plunger path. The blocking element is rotatable about an axis and operates in a...

Claims

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Application Information

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IPC IPC(8): H01H9/26H01H50/32
CPCH01H9/26H01H50/323
Inventor K·赫罗尔德
Owner ABB (SCHWEIZ) AG