Elastic check ring for opening part of sliding universal joint and manufacturing method of elastic check ring

Abstract

The invention discloses an elastic check ring for an opening part of a sliding universal joint and a manufacturing method of the elastic check ring. The elastic check ring mainly comprises a check ring body. The check ring body comprises a connecting plate, a blocking plate and an opening, the two sides of the connecting plate are connected with the blocking plate, an elastic blocking piece is arranged on the blocking plate, and the elastic blocking piece comprises a limiting part used for blocking a ball ring and a fixing piece. The manufacturing method comprises the following steps that a), a material plate is placed on stamping equipment, and a semi-finished product is obtained in a stamping manner; b), the semi-finished product is placed on a shape-preserving die, and finishing is conducted on the semi-finished product by using a finishing punch to form a finished product; c), sharp corners and burrs of the finished product are removed; d), the finished product is thermally treated; and e), the surface of the finished product is treated. According to the elastic check ring for the opening part of the sliding universal joint, under the same sliding requirement, the length of a universal joint shell is shortened, and the material cost is reduced; under the same shell length, the sliding distance of the ball ring is lengthened; and the elastic check ring is low in mold opening cost, short in mold opening period, high in manufacturing speed, short in verification period, high in tensile strength and high in reliability.

Description

technical field [0001] The invention relates to the field of ball cage retaining rings, in particular to an elastic retaining ring at the opening of a sliding universal joint and a manufacturing method thereof. Background technique [0002] The universal joint at the sliding end of the cage type constant velocity drive shaft is usually designed as a three-prong raceway type. When the three-prong slides normally in the raceway, the three-prong will often pull out when sliding in the raceway before the OEM installs the car. Because the ball ring can freely rotate and slide up and down on the shaft head, it will increase the difficulty of automatic rebound or manual rebound into the raceway, and cause damage or adverse effects to other parts. Therefore, in order to prevent the trident ball ring from falling out, the designer, A retaining ring is designed. [0003] Generally, the anti-detachment measures on the market adopt the scheme of riveting points at the mouth of the shel...

AI Technical Summary

Problems solved by technology

[0002] The universal joint at the sliding end of the cage type constant velocity drive shaft is usually designed as a three-prong raceway type. When the three-prong slides normally in the raceway, the three-prong will often pull out when sliding in the raceway before the OEM installs the car. Because the ball ring can freely rotate and slide up and down on the shaft head, it will increase the difficulty of automatic rebound or manual rebound into the raceway, and cause damage or adverse effects to other parts. Therefore, in order to prevent the trident ball ring from falling out, the designer, retaining ring

[0003] Generally, the anti-detachment measures on the market adopt the scheme of riveting points at the mouth of the shell, but this kind of scheme requires special equipment (such as a four-column hydraulic press) and special tooling to press the appropriate pits at the mouth of the shell to squeeze the mouth of the shell. The three-fork assembly is pressed into the raceway with higher pressure. This solution has the following defects: high equipment cost, high process control cost, part forming is destructive, and it is not conducive to after-sales disassembly and assembly.

[0004] There is also a profiling dust cover solution for anti-loosening measures, which transfers the reaction force that prevents the ball ring from coming out to the clamp of the dust cover, resulting in another failure risk. This solution has: high cost of mold opening, verification Defects such as long cycle and unsatisfactory effect to achieve the purpose

[0005] And there are also a round steel wire retaining ring at the mouth and a profiling steel wire retaining ring at the mouth. This scheme has the advantages of shortening the sliding stroke of the ball ring in the raceway, and under the same sliding requirements, the inner cavity of the housing needs Defects such as lengthening, high material cost, unsatisfactory effect of achieving the purpose, etc.

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