Electric Supporting Rod Anti-Rotation Locking Mechanism
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Solution Overview
Problem
Existing electric supporting rods for electric doors are complex in structure, difficult to assemble, and costly due to the need for additional fastening units to prevent the retractable screw rod from rotating during operation.
Innovation Solution
An electric supporting rod design featuring a driving unit with a first outer cylinder and a driver, and an actuating unit with a second outer cylinder and transmission screw rod, where elastic latching hooks and connection pieces securely lock the units together, preventing the actuating unit from rotating during operation, thus simplifying assembly and reducing production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fastening unit is added to prevent the outer case from rotating during operation, then the reliability of power transmission is improved, but the device complexity increases and manufacturing cost rises
Solution Approach 1:
The patent combines the fastening function with the connector by integrating positioning columns directly into the connector structure. The connector serves dual purposes: transmitting power from the electric motor to the retractable screw rod and preventing rotation through its built-in positioning columns that engage with positioning holes in the outer case. This eliminates the need for a separate fastening unit while maintaining reliable power transmission.
2Reliability
If a fastening unit is added to prevent the outer case from rotating during operation, then the reliability of power transmission is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The connector is designed as an integrated component that combines power transmission and anti-rotation fastening functions. The positioning columns are formed as integral parts of the connector, eliminating the need for separate fastening units and reducing assembly steps. This integration simplifies the manufacturing process while ensuring reliable power transmission from the electric motor to the retractable screw rod.
3Adaptability or versatility
If the outer case is divided into two segments to accommodate the electric motor and retractable screw rod, then the adaptability of the design is improved, but the device complexity increases
Solution Approach 1:
The outer case is divided into two segments: a first outer case accommodating the electric motor and a second outer case accommodating the retractable screw rod. This segmentation allows independent optimization of each section and facilitates modular assembly. The connector bridges these segments, enabling flexible component arrangement while maintaining a relatively simple overall structure through standardized connection interfaces.
Data Source
AI summary
An electric supporting rod includes a driving unit and an actuating unit. The driving unit has a first outer cylinder and a driver disposed in the first outer cylinder. The first outer cylinder has an opening and elastic latching hooks disposed on an inner wall thereof, and the driver has a transmission slot. The actuating unit has a second outer cylinder and a transmission screw rod sheathed in the second outer cylinder. The second outer cylinder has an insertion part inserted into the opening, the transmission screw rod has a passive end engaged with the transmission slot, the insertion part has connection pieces surrounding the passive end, and the connection pieces are latched with the elastic latching hooks to longitudinally lock driving unit and the actuating unit. Accordingly, the electric supporting rod has a simple structure and is easily assembled.