Sliding Link Plate Reference Point Indicator for Accurate Positioning
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Solution Overview
Problem
Conventional methods for indicating reference points on construction members are prone to human error and depend on the skill level of the worker, leading to inefficiencies in accuracy and working efficiency.
Innovation Solution
A reference point indicating apparatus comprising at least two link plates with slide slits and an indicator, featuring leg portions that contact an object to automatically indicate a reference point, allowing for precise positioning without manual measurement of the object's size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods using convex or writing materials are used to mark reference points, then the process is simple to implement, but the accuracy depends on worker skill and human error occurs frequently
Solution Approach 1:
The apparatus automatically determines and marks the reference point through its mechanical structure without requiring worker skill or judgment. The leg portions contact the object surface, and the indicator automatically positions itself at the reference point through the geometric constraints of the link plates and slide slits, eliminating human error entirely
Solution Approach 2:
The patent replaces manual measurement and marking operations with a mechanical system that uses geometric constraints (link plates, slide slits, leg portions) to automatically locate and indicate the reference point, substituting human skill with mechanical precision
2Productivity
If manual measurement and marking methods are used, then the apparatus is simple, but working efficiency is insufficient
Solution Approach 1:
The link plates and leg portions are pre-configured with specific geometric relationships (perpendicular bisectors, equal distances) that automatically perform the measurement and calculation functions, allowing the reference point to be indicated in a single operation without sequential manual measurements
Solution Approach 2:
The apparatus performs all measurement and calculation operations automatically through its mechanical structure, eliminating the need for workers to measure, calculate, and mark sequentially, thereby significantly reducing the time required for reference point indication
3Measurement precision
If the indicator position is determined by worker skill, then flexibility is maintained, but accuracy is inconsistent
Solution Approach 1:
The apparatus automatically positions the indicator at the correct reference point through its geometric constraints, eliminating the need for worker skill or judgment. The mechanical structure itself performs the function of skilled operation, ensuring consistent accuracy regardless of operator capability
Solution Approach 2:
The link plates are designed with asymmetric geometries (fan shapes with specific central angles, T-shapes with offset centers) that create unique geometric constraints, ensuring that the indicator can only be positioned correctly at the reference point, thereby guaranteeing accuracy without requiring operator skill
Data Source
AI summary
Provided is a reference point indicating apparatus comprising at least two link plates, a slide slit formed in each link plate, an indicator configured to be slidable along each slide slit and to be provided at an intersection of a center line of each slide slit, and at least three leg portions configured to be provided on the same circumference centered on the indicator, wherein the indicator is configured to be located on an intersection of a perpendicular bisector of each straight line connecting centers of leg portions adjacent to each other, the leg portions are configured to be contactable with an object 3 by sliding the indicator, the indicator is configured to indicate a reference point of the object in a state where each leg portion is in contact with the object.