Foldable Frame Assembly for Optical Touch Device Portability

Solution Overview

Problem

Conventional optical touch devices are limited in portability and versatility due to their fixed frame design, which makes them difficult to use with various planes and complicates storage and transportation.

Innovation Solution

A foldable frame assembly comprising pivotally connected frames that can be expanded or folded, allowing the optical touch device to be used on any plane and easily stored or transported by rotating the frames.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the frame is fixed and embedded in a screen or board, then the optical touch device can provide stable noise isolation and distinct brightness variation, but the device cannot be carried easily and cannot be used with other planes

Engineering Contradiction:

Improvenoise isolationVSAvoidportability

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The frame is divided into multiple detachable sections that can be separated into individual components. This segmentation allows the frame to be disassembled for easy transport and reassembled for use with different planes or screens, resolving the contradiction between maintaining structural integrity for noise isolation and enabling portability through detachable design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The frame incorporates adjustable and reconfigurable elements that allow it to adapt dynamically to different plane sizes and configurations. This dynamic design enables the frame to maintain its noise isolation function while being flexible enough to be used with various screens and boards, addressing both reliability and adaptability requirements

Inventive Principle:

Principle #15Dynamics

2Reliability

If the frame is fixed and embedded in a screen or board, then the optical touch device can provide stable noise isolation, but the device cannot be stored or transported easily

Engineering Contradiction:

Improvenoise isolationVSAvoidease of storage and transportation

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The frame is divided into multiple detachable sections that can be separated into individual components. This segmentation allows the frame to be disassembled for easy transport and reassembled for use with different planes or screens, resolving the contradiction between maintaining structural integrity for noise isolation and enabling portability through detachable design

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The frame components are designed to nest within each other when disassembled, with smaller sections fitting inside larger ones. This nesting arrangement minimizes storage space requirements and makes transportation convenient while maintaining the complete frame structure when assembled for noise isolation functionality

Inventive Principle:

Principle #7Nested doll (Nesting)

Data Source

PatentUS10037056B2Optical touch device and foldable frame assembly thereof

Publication Date: 2018.07.31 WISTRON CORP

AI summary

An optical touch device includes a foldable frame assembly, two image sensing units and two light emitting units. The foldable frame assembly comprises a first frame, a second frame, a third frame and a fourth frame. The two image sensing units are disposed on opposite ends of the fourth frame respectively. The two light emitting units are disposed on opposite ends of the fourth frame respectively and adjacent to the two image sensing units respectively. The frames of the foldable frame assembly are pivotally connected to each other such that the frames can rotate with respect to each other so as to be folded or expanded.