Impact mechanism for an impact wrench

B - Operations – Transporting – 25 – B

Patent

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Details

B25B 21/02 (2006.01)

Patent

CA 2603527

An impact mechanism (12) for an impact wrench comprises an anvil (8) with a middle portion (13), at least one abutment surface (14) radially protruding therefrom, which forms at least one abutment surface (15), a hammer (4) with an impact surface (16) suitable to give rotational pulses to the anvil (8) by the impact surface (16) hitting the abutment surface (15). The anvil (8) comprises a first connection area (17) connecting the abutment portion (14) to the middle portion (13) within the axial extension of the abutment surface (15) and the middle portion (13) and a reinforcement rib (18) axially arranged out of the abutment surfaces (15) that connects the abutment portion (14) to the middle portion (13) of the anvil (8), thereby forming a second connecting area

L~invention concerne un mécanisme d'impact (12) pour une clé à chocs comportant une enclume (8) avec une partie médiane (13), au moins une partie de butée (14) qui en dépasse radialement, formant au moins une surface de butée (15), un marteau (4) avec une surface d'impact (16) permettant de donner des impulsions en rotation à l'enclume (8) quand la surface d'impact (16) frappe la surface de butée (15). L'enclume (8) comporte une première zone de liaison (17) reliant la partie de butée (14) à la partie médiane (13) dans le prolongement axial de la surface de butée (15) et à la partie médiane (13), ainsi qu'une nervure de renfort (18) partant dans le sens axial des surfaces de butée (15) et reliant la partie de butée (14) à la partie médiane (13) de l'enclume (8), formant ainsi une deuxième zone de liaison.

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