Right-Angle Connector for Linear Drive Sensor Stability
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Solution Overview
Problem
Existing linear drive devices for applications like exhaust gas recirculation control valves have complex structures that are costly and prone to shaking or swinging, which can interfere with sensor signals, and require precise control while being lightweight and miniaturized.
Innovation Solution
A linear drive device with a connector that facilitates easy assembly and minimizes rotational influence on sensor signals, featuring a motor, speed-reducing transmission stage, and a linear transmission stage with a spiral trench and follower, along with a right-angle connector that includes specific holes and reinforcement ribs for structural support and sensor alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a connector for connecting rotational movement part and linear movement part is used in existing linear drive devices, then the device can achieve motion transformation, but the structure becomes complex and machining costs increase
Solution Approach 1:
The connector is merged with the transmission gear by directly forming the connector as an integral part of the transmission gear body. This eliminates the need for separate connector components and reduces assembly steps, thereby simplifying the overall structure and reducing machining costs while maintaining the motion transformation function.
Solution Approach 2:
The transmission gear is designed to serve multiple functions: it acts as both the rotational motion component and the connector for linking to the linear movement part. By making the transmission gear multi-functional, the patent reduces the total number of components needed in the system, simplifying the connector structure and easing manufacturing.
2Reliability
If a conventional connector is used to connect rotational and linear movement parts, then motion transformation is achieved, but shaking or swinging influences sensor signals
Solution Approach 1:
The connector is designed with an asymmetric structure where the connection point for the linear movement part is positioned offset from the rotational center of the transmission gear. This asymmetric positioning creates a more stable kinematic relationship that reduces shaking and swinging motions, thereby improving sensor signal stability without requiring additional complex stabilization components.
3Weight of moving object
If the linear drive device is miniaturized and lightweighted, then it meets automotive industry requirements, but structural integrity and precision control become more difficult to maintain
Solution Approach 1:
The connector is nested within the transmission gear structure, with the linear movement connection being integrated into the rotational gear body. This nesting approach allows the device to be miniaturized by eliminating clearance spaces between components while maintaining structural integrity and precision control through the monolithic construction.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables precise, lightweight, and miniaturized linear control with reduced friction loss and improved efficiency, effectively preventing substantial rotation that could interfere with sensor signals, while maintaining structural integrity and ease of assembly.
Implementation Method 1
A spiral trench is provided on the transmission gear, a follower capable of moving in the trench is received in the trench, the follower is connected to the output connecting rod via a connector
Data Source
AI summary
A linear drive device includes: a motor; a speed-reducing transmission stage having: a pinion gear fixedly connected to an output shaft of the motor, and a transmission gear meshing with the pinion gear; a linear transmission stage configured to transform a rotational movement of the transmission gear into a linear movement of an output connecting rod, the output connecting rod being received in a sleeve member so as to only move linearly; a spiral trench arranged on the transmission gear; and a follower received in the spiral trench so as to be movable in the spiral trench. The follower is connected to the output connecting rod via a connector, and the connector is configured as a right-angle member.