Measuring Jig Protruding Portion for Gap Sensor Attitude
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Solution Overview
Problem
Existing gap measurement technologies face challenges in maintaining the attitude of measurement sensors with respect to the members forming the gap, requiring complex configurations to ensure accurate measurements.
Innovation Solution
A measuring jig with a base portion, a sensor holding portion, and a first protruding portion that contacts one of the members, along with a biasing unit such as a helical torsion spring, to stabilize the sensor's attitude and facilitate accurate gap measurement through a simplified configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a measuring device is fixed to a member by screwing a screw into a threaded hole, then the sensor attitude can be maintained, but the configuration becomes complex
Solution Approach 1:
The patent extracts the screwing operation from the measurement process. Instead of requiring users to screw the measuring device into a threaded hole, the device is designed with a built-in protruding portion that automatically engages with a groove on the member, eliminating the need for separate fastening operations while maintaining reliable sensor positioning.
Solution Approach 2:
The measuring device performs self-positioning through its protruding portion that automatically engages with the groove on the member. This self-service mechanism eliminates the need for external fastening operations or complex alignment procedures, allowing the device to maintain its own attitude relative to the member without additional components.
2Measurement precision
If the sensor holding portion is inserted in the gap between two members, then the gap measurement can be performed, but the sensor attitude may not be maintained reliably without additional structures
Solution Approach 1:
The protruding portion acts as an intermediary element between the measuring device and the member. It provides a mechanical interface that ensures the sensor holding portion maintains the correct attitude relative to the member surface, enabling accurate gap measurements without requiring complex additional structures or adjustment mechanisms.
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
Enables accurate gap measurement between members with a simple configuration, maintaining sensor attitude and preventing partial contact, thus improving measurement reliability and ease of use.
Implementation Method 1
at least one biasing unit configured to bias the movable piece toward an opposite side to the first position across the sensor position, in the direction orthogonal to the sensor installation surface
Implementation Method 2
the at least one biasing unit includes a helical torsion spring disposed around a line which is parallel to the sensor installation surface and which is orthogonal to a protruding direction of the sensor holding portion from the base portion
Data Source
AI summary
A measuring jig includes: a base portion; a sensor holding portion disposed so as to protrude from the base portion and configured to hold a sensor; and a first protruding portion protruding from the base portion toward the same side as the sensor holding portion, at a first position different from a sensor position which is a position of a sensor installation surface on which the sensor extends, with respect to a direction orthogonal to the sensor installation surface.