Device for detachable fastening of two mechanical components

摘要

Device for detachable fastening of two mechanical components between which a channel or housing is defined, including a peg, with at least two grooves on opposite faces, and a band accommodated in the grooves, fastened by pinching at the lower part of the peg and with a flexible portion that has the upper end thereof bent in order to retain the peg/band assembly in a transverse grove of the channel The invention applies in particular to the fastening of a tooth in a tooth holder of the scoop of an excavating machine or the like.

主权项

1. A fastening device for coupling a male piece and a female piece, the coupling forming a channel or housing in which the fastening device is housed, the fastening device comprises:
a peg formed by a solid body with an upper end and a lower end and a first groove on one side of the peg and a second groove on an opposite side of the peg and opposite the first groove, wherein the first groove is variable in depth and runs longitudinally along the peg body, the first groove comprising a first upper portion which decreases in depth followed by a second lower portion of constant depth that extends until the lower end of the peg body and; a retainer element, which comprises a band inserted into the first groove and the second groove of the peg, the band having a longitudinal bending portion in the first groove of the peg, the longitudinal bending portion configured to bend within the first upper portion of the first groove; the retainer element further comprising a first free retention end angled relative to the longitudinal bending portion of the band and a fastening portion positioned in the second groove of the peg with a second free end directed away from the first free retention end; and wherein a distance, measured horizontally, between the second portion of the first groove and the second groove at a deepest point, which coincides with a minimum thickness of the peg body between the first groove and the second groove, is greater than a smallest distance, measured horizontally, between the bending portion of the band and the fastening portion of the band, when the band is not inserted into the first groove and the second groove, such that force is needed to separate the bending portion of the band and the fastening portion of the band in order to insert the bending portion of the band and the fastening portion of the band into the respective first groove and second groove, thereby creating a pinch effect once inserted.