Lock Drive Mechanism Using Conversion Spring for Rotational to Linear Motion
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Solution Overview
Problem
Existing lock drive mechanisms fail to efficiently convert rotational movement into axial and linear movement, requiring complex structures and high production costs.
Innovation Solution
A drive mechanism comprising a linear-moving sleeve, a conversion spring, and a rotating component with a split structure, where the conversion spring is fitted onto the rotating component, allowing rotational movement to be converted into linear movement through symmetric protrusions and a spiral coil/helix design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a complex structure is used to convert rotational movement to axial and linear movement, then the conversion efficiency is improved, but the manufacturing cost and device complexity increase
Solution Approach 1:
The rotating component is divided into a rotating bolt and a clipping end, allowing the conversion spring to be fitted onto the rotating bolt while engaging with the clipping end. This segmentation enables the rotational movement to be converted to linear movement through the symmetric protrusions on the linear-moving sleeve interacting with the spiral coil/helix of the conversion spring, achieving efficient conversion without complex structures
Solution Approach 2:
The conversion spring is designed with a spiral coil/helix structure that interacts with the symmetric protrusions on the linear-moving sleeve. The curved ends of the conversion spring are inserted into a groove of the rotating bolt, allowing the rotational movement to be converted to linear movement through the spiral geometry, achieving efficient conversion with a simple structure
2Productivity
If a complex structure is used to convert rotational movement to axial and linear movement, then the conversion efficiency is improved, but the production cost increases
Solution Approach 1:
The rotating component is segmented into a rotating bolt and a clipping end, allowing the conversion spring to be fitted onto the rotating bolt. This segmentation enables the use of standard manufacturing processes for each component, reducing production costs while maintaining efficient conversion of rotational to linear movement
Solution Approach 2:
The conversion spring and linear-moving sleeve are designed as simple, cost-effective components that can be easily manufactured. The symmetric protrusions on the linear-moving sleeve and the spiral coil/helix of the conversion spring provide efficient conversion without requiring expensive materials or complex manufacturing processes
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 mechanism provides a simple, cost-effective, and efficient conversion of rotational to linear movement, enabling easy operation and production, effectively driving the lock mechanism.
Implementation Method 1
The conversion spring (2) is fitted onto the rotating component (3). Curved ends (21) of the conversion spring (2) are inserted into a groove (51) of the rotating bolt (5). The adoption of the above structure enables the conversion spring (2) to rotate in conjunction with the rotation of the rotating bolt (5), and the rotating movement is then converted to linear movement along the rotating bolt (5)
Data Source
AI summary
A drive mechanism for a lock comprises a linear-moving sleeve (1), a conversion spring (2) and a rotating transmission component (3). The rotating component (3) is inserted into the linear-moving sleeve (1) that moves along the rotating component (3) in an axial direction. The conversion spring (2) is fitted onto the rotating component (3). The linear-moving sleeve (1) has symmetric protrusions (11). The rotating component (3) comprises an end (4) and a rotating bolt (5). The rotating bolt (5) is plugged into the clipping end (4). The conversion spring (2) has two curved ends (21) which are inserted into the groove (51) of the rotating bolt (5). The conversion spring (2) rotates in conjunction with the rotating of the rotating bolt (5) and the rotation movement is converted to linear movement along the rotating bolt (5).