Removable device for attaching two mechanical parts

摘要

A removable device for attaching two mechanical parts includes a pin removably locking a first part with respect to a second part, a retainer member on the pin and a resiliently loaded tension member which collaborate to prevent the pin from coming out of its locked position; the removable device further includes at least two inclined surfaces, the general shape of which is that of a projection oriented in the axial direction of the pin, such that when the pin rotates, the retainer member runs along the inclined surfaces and the pin moves between the locked position and unlocked position against a force exerted on the pin along a longitudinal axial direction of the pin exerted by the tension member.

主权项

1. An excavating device, comprising:
a female part having a cavity configured to receive a male part; a removable pin configured to lock the female part to the male part and configured to be received within a through-hole in the male part when the male part is assembled within the cavity, the pin comprising a retaining member projecting transversely from an outer surface of the pin; the cavity of the female part comprising a hole in a wall of the cavity for receiving the pin and the retaining member, wherein the hole is shaped for introduction of the retaining member; and a resiliently loaded tension member configured to engage an outer surface of the male part when the male part is assembled within the cavity and configured to exert a force on the retaining member in a longitudinal axial direction of the pin when the pin is inserted within the hole in the female part and the retaining member is received within the cavity; wherein an interior surface of the cavity of the female part adjacent the hole comprises at least two inclined surfaces such that when the pin is inserted and rotated together with the retaining member in a first direction, the retaining member runs along the inclined surfaces moving between at least two positions against a force exerted on the pin in a longitudinal axial direction of the pin by said tension member, one of the at least two positions is a locked position in which the retaining member and the tension member cooperate to prevent the pin from rotating in a second direction opposite to the first direction so as to prevent the retaining member from disengagement with the interior surface of the cavity; wherein the at least two inclined surfaces are inclined relative to a plane perpendicular to the longitudinal axial direction of the pin or inclined relative to a plane parallel to the longitudinal axial direction of the pin; and wherein the hole in the female part is defined by a surface on an inside of the hole correspondingly sized and shaped with the outer surface of the pin, and the pin, beyond the retaining member, has an outer surface that is configured to directly face the surface on the inside of the hole as the pin is inserted into the hole.