Rocker-Chute Finger Oximeter Guide Post Assembly

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Solution Overview

Problem

Existing finger-clipped oximeters face issues with easy assembly, coil spring fatigue, unreliable connections, and user discomfort due to non-parallel movement of upper and lower cases.

Innovation Solution

The design replaces the coil spring with a guide post-guide sleeve structure and a return spring, incorporating rockers and chutes for vertical movement, ensuring a firm connection and comfortable operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a coil spring is used to connect the upper and lower cases, then the cases can be rotated and separated, but the assembly becomes complex and the spring is prone to fatigue fracture

Engineering Contradiction:

Improverotation and separation capabilityVSAvoidassembly complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent removes the coil spring from the connection structure between upper and lower cases, extracting the problematic elastic element that caused assembly complexity and fatigue issues. The connection is achieved through direct structural integration with guide posts and guide sleeves instead.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The connection structure is segmented into guide posts on one case and guide sleeves on the other case, allowing independent positioning and assembly of each component. This segmentation simplifies the overall assembly process while maintaining the desired movement capability.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If a coil spring connection structure is used, then the cases can move relative to each other, but the connection becomes unreliable and cases may separate when dropped

Engineering Contradiction:

Improverelative movement capabilityVSAvoidconnection reliability

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The guide post and guide sleeve structure provides predetermined guidance and constraint for the upper and lower cases, preventing unintended separation before it can occur. The structure inherently guides the movement path and prevents disengagement under accidental drops.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

3Adaptability or versatility

If the upper and lower cases are connected through pivot and coil spring, then the cases can rotate, but they move in non-parallel directions causing poor user comfort

Engineering Contradiction:

Improvemovement freedomVSAvoiduser comfort

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The guide posts are positioned asymmetrically within the guide sleeves, allowing the upper and lower cases to move in parallel directions rather than rotating around a pivot. This asymmetric arrangement ensures consistent alignment and parallel movement that improves user comfort during measurement.

Inventive Principle:

Principle #4Asymmetry

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

This design facilitates easy assembly, prolongs the device's lifespan, provides a reliable connection, and enhances user comfort by ensuring consistent contact and accurate measurement.

Implementation Method 1

one of the upper case and the lower case is provided with a guide post which enables the upper case and the lower case to depart from and approach to each other vertically, the other of the upper case and the lower case is provided with a guide sleeve which enables the upper case and the lower case to depart from and approach to each other vertically

Methodology Applied

Scientific EffectMechanical guidance:

Implementation Method 2

a return spring is provided between an end of the guide post and the case provided with the guide sleeve

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 3

one of the upper case and the lower case is provided with rockers which are used to facilitate the upper case and the lower case to depart from and approach to each other vertically, the other of the upper case and the lower case is provided with chutes which are used to facilitate the upper case and the lower case to depart from and approach to each other vertically, and ends of the rockers fit with the chutes

Methodology Applied

Scientific EffectMechanical interaction:

Data Source

PatentUS8386001B2Rocker-chute type finger-clipped oximeter

Publication Date: 2013.02.26 BEIJING CHOICE ELECTRONICS TECH CO LTD

AI summary

The present invention discloses a finger-clipped oximeter comprising an upper case (2) and a lower case (1), wherein one of the upper case (2) and the lower case (1) is provided with a guide post (12) which enables the upper case (2) and the lower case (1) to depart from and approach to each other vertically, the other of the upper case (2) and the lower case (1) is provided with a guide sleeve (13) which enables the upper case (2) and the lower case (1) to depart from and approach to each other vertically, and a return spring (9) is provided between an end of the guide post (12) and the case provided with the guide sleeve (13). One of the upper case (2) and the lower case (1) is provided with rockers (7, 8) which are used to facilitate the upper case (2) and the lower case (1) to depart from and approach to each other vertically, the other of the upper case (2) and the lower case (1) is provided with chutes (14, 15) which are used to facilitate the upper case (2) and the lower case (1) to depart from and approach to each other vertically, and ends of the rockers (7, 8) fit with the chutes (14, 15).