Blade assembly

H - Electricity – 01 – H

Patent

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Details

H01H 71/00 (2006.01) H01H 71/50 (2006.01) H01H 71/52 (2006.01)

Patent

CA 2181728

A blade assembly (12) for a switch such as a circuit breaker comprises a blade member (2A), a trip lever (2B), a contact holder (2C) and preferably also a pawl (2D). The blade member (2A), trip lever (2B) and pawl (2D) are of an insulating plastics material. The blade member (2A) has a rear contact end (5) to which the contact holder (2C) is mounted and a front end (6) including an extension (12) which defines in use an indicator flag. A pawl mounting pivot pin (14) extends between side walls (3, 4) of the blade member to mount the pawl (2D). A trip lever mounting pin (20) integral with the blade member (2A) is used to mount the trip lever (2B). The trip lever (2B) has a front nose (24) for engaging with a corresponding recess (25) of the pawl (2D), and an integral flexible arm (27) which acts as a biassing spring to urge the nose (24) into engagement with the recess (25) of the pawl (2D).

Ensemble à lame (12) pour un interrupteur tel qu'un disjoncteur, comportant un élément lame (2A), un levier de déclenchement (2B), un porte-contacts (2C) et de préférence un cliquet (2D). L'élément lame (2A), le levier de déclenchement (2B) et le cliquet (2D) sont en matière plastique isolante. L'élément lame (2A) possède une extrémité postérieure de contact (5) sur laquelle est monté le porte-contacts (2C), et une extrémité antérieure (6) comprenant un élément de prolongement (12) constituant un drapeau indicateur lors de l'utilisation. Un axe (14) sur lequel est monté pivotant le cliquet (2D) s'étend entre les parois latérales (3, 4) de l'élément lame. Un axe (20) solidaire de l'élément lame (2A) permet le montage du levier de déclenchement (2B). Ce dernier possède un nez antérieur (24) destiné à s'engager dans une concavité correspondante (25) prévue dans le cliquet (2D), et un bras souple (27) faisant corps avec ledit levier sert de ressort sollicitant le nez (24) de sorte qu'il vienne s'engager dans la concavité (25) ménagée dans le cliquet (2D).

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