Actuating Motor Set Position Limiting via Worm Gear Spring
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Solution Overview
Problem
Conventional actuating motor sets in electronic locks lack a position limiting mechanism, leading to overshooting and high malfunction rates, which affects usage life and increases production costs due to complexity and the number of components.
Innovation Solution
An actuating motor set utilizing a spring and worm gear mechanism with a tooth structure that limits position through engagement and disengagement, preventing overshoot and simplifying the manufacturing process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a position limiting mechanism is added to the actuating motor set, then the malfunction rate decreases and usage life increases, but the device complexity and production cost increase
Solution Approach 1:
The patent combines the position limiting function with the existing driving components by integrating a limiting structure directly into the worm gear or transmission mechanism. This merging approach eliminates the need for separate position limiting sensors and mechanisms, thereby reducing device complexity while maintaining reliability improvements
Solution Approach 2:
The actuating motor set is designed to automatically limit its own position through mechanical constraints built into the transmission system. The motor-driven components self-regulate their movement range without requiring external sensors or control systems, achieving reliability improvement through self-limiting mechanical design
2Device complexity
If conventional actuating motor sets operate without position limiting, then the device complexity remains low, but the motor components overshoot and push other components causing high malfunction rates
Solution Approach 1:
The patent incorporates mechanical constraints and limiting structures that prevent overshooting before it occurs. These pre-designed mechanical boundaries cushion and restrict the movement of motor-driven components within safe ranges, preventing damage to other lock components and reducing malfunction rates without adding complex control systems
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 effectively prolongs the usage life of the motor set by preventing overshooting and reducing production costs through simplified components and design, enhancing the product's competitiveness.
Implementation Method 1
The spring is pushed spirally by the tooth upon rotation of worm gear
Implementation Method 2
a transmission set including a worm gear
Implementation Method 3
The spring includes an engagement part and an abutment part... the spring is pushed spirally by the tooth upon rotation of worm gear, and thus moves back and forth in the axial direction
Data Source
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AI summary
An actuating motor set includes a mounting base; a motor; a transmission set including a worm gear formed with a tooth, wherein two opposite ends of the worm gear respectively defining are a pushing end and a restoring end; and a spring including an engagement part and an abutment part. The engagement part is engaged with the tooth, and an inner diameter of the abutment part is larger than an outer diameter of the tooth. The spring is pushed spirally by the tooth upon rotation of worm gear, and thus moving back and forth on an axial direction of the worm gear. The spring idles when it is moved to the pushing end due to lack of engagement therewith, and the spring also idles when it is moved the restoring end due to lack of engagement therewith.