Novel piston rod structure

By designing a new piston rod structure, including an oil-inlet channel and a second piston rod connected through the intersecting, the circulation range of oil in the cylinder shock absorber is expanded, the shock absorption effect is improved, and the problem of limited shock absorption performance caused by the single-rod structure is solved.

CN222668782UActive Publication Date: 2025-03-25NINGBO LONGFA AUTO ACCESSORIES CO LTD
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Patent Information

Application Number
CN202421336044.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-06-13
Publication Date
2025-03-25
Estimated Expiration
2034-06-13

AI Technical Summary

Technical Problem

Common piston rods adopt a single rod structure that directly pushes the piston to squeeze the oil in the shock absorber, making the oil flow range smaller, resulting in limited shock absorption performance.

Method used

A new piston rod structure is designed, including a first piston rod and a second piston rod. The first piston rod is equipped with an oil inlet channel in the center. The second piston rod is interspersed and connected in the oil inlet channel. Through the coordination of the positioning sleeve ring and the barrier sleeve ring, the oil is pushed to displace the oil in the oil inlet channel and expand the shock-absorbing and damping space.

Benefits of technology

Through the new piston rod structure, oil provides a large shock absorption and damping space inside the cylinder shock absorber, thereby improving the shock absorption effect and solving the problem of limited shock absorption performance caused by the single-bar structure.

✦ Generated by Eureka AI based on patent content.
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Abstract

The novel piston rod structure comprises a first piston rod, an oil inlet through groove is formed in the center of the first piston rod, a second piston rod is connected into the oil inlet through groove in a penetrating mode, and a positioning thread is arranged at one end of the outer side of the first piston rod. One end of the outer side of the first piston rod is in threaded connection with a first positioning gasket and a blocking gasket in sequence, one end of the outer side of the first piston rod is sleeved with a first piston pad, the first piston pad is located between the first positioning gasket and the blocking gasket, and a sealing ring is fixedly connected to the position, away from the first piston pad, of the outer side of the first piston rod. When the second piston rod moves towards the interior of the first piston rod under the action of an external automobile, oil liquid can be pushed to move in the oil inlet through groove, and when the second piston rod pushes the first piston rod to move along with the second piston rod through the positioning lantern ring, a large shock absorption damping space can be provided for the oil liquid through the oil inlet through groove and the interior of the telescopic shock absorber. Therefore, the damping effect is improved.
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