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Removable Bridge Safety Electrical Contactor

A technology of contactors and safety electricity, applied in relays, contacts, circuits, etc., can solve problems such as fixed problems, safety electrical contactor failures, etc.

Inactive Publication Date: 2011-12-14
ASTRA A SWEDISH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] With regard to this embodiment of the contact spring, it should be taken into account that although it actually reduces the size and overall dimensions of the body of the receiving part of the safety electrical contactor, due to the conical helical spring of the contact element in the cone There are problems with the fixation at the apex formed, where this conical helical spring can lead to failure of the safety electrical contactor in the event of a large number of operations, so it is still not desirable to use such a helical spring

Method used

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  • Removable Bridge Safety Electrical Contactor
  • Removable Bridge Safety Electrical Contactor
  • Removable Bridge Safety Electrical Contactor

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Embodiment Construction

[0026] Referring to the accompanying drawings, numeral 1 generally designates the removable bridge type safety electrical contactor of the present invention.

[0027] Specifically, the detachable bridge safety electrical contactor 1 includes:

[0028] - a contact bridge 2 with two rod contacts 3 in electrical communication with each other; and

[0029] - The receiving body 4, in which are defined two corresponding seats 5, each adapted to receive a rod-shaped contact 3 of the contact bridge 2 in an insertable / removable manner from the front opening.

[0030] The contact elements 6 , supported by corresponding contact springs 7 , are seated in the receiving body 4 . These contact elements 6 are adapted to be contacted by the free ends of the rod-shaped contacts 3 of the contact bridge 2 when the contact bridge 2 is engaged with the receiving body 4 .

[0031] That is, each contact element 6 is housed together with its contact spring 7 in a corresponding seat 5 of its receivin...

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PUM

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Abstract

Removable bridge type safety electrical contactor, wherein each contact element is supported by its corresponding contact spring including a reed made of elastic spring material, wherein the first end (7a) and the opposite The end portions (7b) are separated by an intermediate portion (1) which is folded to present substantially straight segments alternating with and connected by arcuate segments (7d) (7c) defines a side-to-side alternating undulating profile, thereby enabling the first end (7a) to elastically and move reversibly.

Description

technical field [0001] The invention relates to a safety electrical contactor. [0002] For the sake of simplicity, the description will be made here with specific and non-limiting reference to a removable bridge safety electrical contactor for use in the construction of a lift system. Background technique [0003] In lift systems, removable bridge safety contactors are widely used to enable / disable certain features, such as refusing to accept electrical permission to activate the lift until the car's inner doors are fully closed. [0004] The requirements that safety contactors need to meet are often spelled out by strict standards. For example, the terminals of the removable contact bridge must fit into the receiving part of the contactor so as to only close the circuit electrically when the mechanical closing member has been engaged for a minimum working travel of typically at least 7 mm. [0005] Most of the current removable bridge safety contactors have a leaf contac...

Claims

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Application Information

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IPC IPC(8): H01H45/00H01H45/14H01H1/50
CPCH01H1/26H01R31/08H01H1/50H01H9/085
Inventor 安德烈娅·特罗内罗
Owner ASTRA A SWEDISH CORP
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