Manual interface of electric push rod

By combining manual bevel gears and translational bevel gears, the problem of inflexible arrangement of manual interface of electric actuator is solved, realizing a flexible and low-cost manual interface for electromechanical telescopic actuator. The manual speed and electric speed are coordinated, and the structure is simple and safe.

CN122236792APending Publication Date: 2026-06-19CHINA NORTH VEHICLE RES INST
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Patent Information

Application Number
CN202610278947.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-03-09
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The existing manual interface of the electromechanical telescopic actuator is not flexibly positioned, making it difficult to meet the operation requirements. It is also complex in structure, costly, and slow in manual operation.

Method used

It adopts a combination structure of manual bevel gear, translational bevel gear and flexible shaft. By meshing and disengaging the translational bevel gear and the manual bevel gear, independent control of electric drive chain and manual drive chain can be achieved. The manual bevel gear is supported on the housing by bearings, and the flexible shaft can be flexibly arranged.

Benefits of technology

It achieves flexible arrangement of the manual interface of the electric actuator. When operating manually, the electric drive chain is disconnected, and the manual speed and electric speed are coordinated. It has a simple structure, high reliability, low cost, small manual torque, and is safe and reliable.

✦ Generated by Eureka AI based on patent content.
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Abstract

The invention provides a manual interface of an electric push rod. The manual interface mainly comprises a manual bevel gear, a translation bevel gear and a flexible shaft. According to the manual interface, the problem of flexible arrangement of the manual interface of the electric push rod can be solved, a user is allowed to manually operate at a far position, the electric transmission chain is disconnected in a manual state, the manual transmission chain is disconnected in an electric state, the manual part does not rotate along with the manual part under the condition that the electric part is normal, flexible arrangement is easier, reliability is high, and the service life is long; and in a manual state, the manual function cannot be influenced even if the motor is burnt out and stuck. In the manual state, the preceding-stage reduction gear is disconnected, manual rotation does not need to drive the motor after speed increasing of the gear, the manual torque is small, and manual operation is easier. Due to the fact that the speed of a manual power source is far lower than that of a motor, a manual bevel gear is arranged in front of a two-way non-return mechanism and behind a front-stage reduction gear, a proper manual transmission ratio can be obtained, the manual speed and the electric speed can be more coordinated, reverse self-locking is achieved in the whole manual process, and safety and reliability are achieved.
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