Sensor Fixture With Pivotable Clamp Arms

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Solution Overview

Problem

Conventional sensor fixtures fail to firmly attach sensors to rotary shafts due to the use of long bands, which can lead to insecure fixation.

Innovation Solution

A sensor fixture with a clamp body, pivotable clamp arms, and protrusions that contact the outer surface of pipes or cylindrical parts, providing multiple supporting points for secure attachment using a fixing bolt and locknut, allowing for firm fixation without bands.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a long band is used to fix the sensor to the rotary shaft, then the sensor can be fixed to rotary shafts of any diameter, but the fixation is not firm

Engineering Contradiction:

Improveadaptability to different diametersVSAvoidfirmness of fixation

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The clamp arms are divided into multiple segments with protrusions at different positions, allowing selective contact with the pipe surface at multiple points to provide firm fixation while adapting to various diameters

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The clamp arms are designed to be pivotable rather than fixed, enabling dynamic adjustment of the clamp position and contact points to accommodate different pipe diameters while maintaining secure fixation

Inventive Principle:

Principle #15Dynamics

2Adaptability or versatility

If a long band with ratchet mechanism is used, then the sensor can be attached to rotary shafts, but the structure becomes complex

Engineering Contradiction:

Improveability to attach to rotary shaftsVSAvoidcomplexity of band and ratchet mechanism

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The invention extracts and eliminates the long band and ratchet mechanism from the fixture, replacing them with a simpler clamp arm structure that achieves the same attachment function without the complexity of bands and ratchets

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The mechanical band-ratchet system is replaced with a pivotable clamp arm system that uses direct mechanical contact and positioning through protrusions, simplifying the overall mechanical structure while maintaining attachment capability

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Reliability

If multiple supporting points are provided through protrusions, then the fixation becomes firm, but the device structure becomes more complex

Engineering Contradiction:

Improvefirmness of fixationVSAvoidstructure with multiple protrusions and clamp arms

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The clamp arms with protrusions serve multiple functions simultaneously: they provide multiple supporting points for firm fixation, adapt to different diameters through pivoting, and eliminate the need for separate band and ratchet components, making the overall structure more efficient despite the added protrusion features

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP2990665B1Sensor fixture

Publication Date: 2018.01.31 TLV CO LTD

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AI summary

A sensor fixture 100 includes a clamp body 1, a sensor 9 threadedly coupled to a center portion of the clamp body 1, clamp arms 2 and 3 respectively attached to the left and right of the clamp body 1, protrusions 4 and 5 respectively provided to the clamp arms 2 and 3, and a fixing bolt 15 attached to lower end portions of the clamp arms 2 and 3. The sensor 9 can be easily and firmly fixed by supporting a sensor attaching part at three points with the sensor 9 attached to the clamp body 1, and the protrusions 4 and 5 of the left and right clamp arms 2 and 3.