Anti-detachment elastic retaining ring capable of springing back for self-locking and mounting method thereof

A mounting method for an anti-detachment elastic retaining ring capable of springing back for self-locking,

• wherein the anti-detachment elastic retaining ring comprises a retaining ring body, wherein the retaining ring body is provided with an opening;
• and corresponding to two sides of the opening, two ends of the retaining ring body respectively form a first end and a second end;
• wherein the retaining ring body in an original state is in a sheet shape as a whole;
• when the retaining ring body is in the original state, the first end and the second end interlock with each other;
• corresponding to interlocking front end positions of the first end and the second end, front ends of the first end and the second end are respectively provided with a first connecting extension section and a second connecting extension section;
• the first connecting extension section and the second connecting extension section extend laterally to form a first limiting protrusion and a second limiting protrusion, respectively;
• the first limiting protrusion and the second limiting protrusion are located at an inner side of each other in a circumferential direction of the retaining ring body;
• adjacent sides of the first limiting protrusion and the second limiting protrusion are provided with locking fitting surfaces;
• and a side of the first limiting protrusion away from the second limiting protrusion and/or a side of the second limiting protrusion away from the first limiting protrusion is provided with an inclined guide surface;
• when the retaining ring body expands outward from a locked state, the two locking fitting surfaces are fitted and interlocked with each other, preventing the retaining ring body from expanding outward to a detached state;
• and
• through the inclined guide surface of the first limiting protrusion and/or the inclined guide surface of the second limiting protrusion, the retaining ring body is reset to the locked state from the detached state by a rebound force of the retaining ring body;
• wherein when the first limiting protrusion and the second limiting protrusion are offset from each other by a first preset distance in an axial direction, wherein the axial direction is perpendicular to a plane formed by a circumference of the retaining ring body;
• the retaining ring body is in an axially unlocked state;
• and the retaining ring body is allowed to reset from the axially unlocked state to the locked state by the rebound force of the retaining ring body;
• wherein when the retaining ring body is in the original state, the first limiting protrusion and the second limiting protrusion are separated by a second preset distance;
• wherein the mounting method comprises the following steps:
• step S1:
• unlocking:
• changing the retaining ring body from the original state to the detached state;
• step S2:
• expansion:
• expanding the retaining ring body until an inner diameter of the retaining ring body is greater than or equal to a diameter of a target mounting shaft;
• step S3:
• movement:
• moving the retaining ring body axially to an axial outer side of a groove;
• and
• step S4:
• insertion:
• moving the retaining ring body axially into the groove, wherein the retaining ring body is reset from the detached state to the locked state due to the rebound force of the retaining ring body and is clamped into the groove.