Waterproof Wearable Device With Sealed Cavity And Wireless Charging

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Solution Overview

Problem

Conventional smart wristbands are not designed to function effectively in humid environments or when exposed to water due to the lack of a waterproof cavity with a wireless data transceiving assembly, limiting their usability.

Innovation Solution

A wearable device with a waterproof cavity formed by joining a front case and a bottom case, containing electronic components including a PCB with a wireless data transceiving assembly and charging contacts, which are electrically connected and sealed to ensure waterproofness, allowing operation in humid conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional smart wristband design is used, then the device structure is simple, but the device cannot function effectively in humid environments or when exposed to water

Engineering Contradiction:

Improvewaterproof performanceVSAvoiddevice structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The device is divided into separate components: a front case, a bottom case with charging contacts, and a sealed cavity containing electronic components. This segmentation allows the waterproof cavity to be constructed with precise sealing at the joints between cases, while keeping the overall device structure relatively simple and modular.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

A waterproof cavity is introduced as an intermediary structure that houses the electronic components. This cavity acts as a protective barrier between the electronic components and the external humid or watery environment, enabling waterproof functionality without fundamentally redesigning the entire device structure.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If a waterproof cavity with wireless data transceiving assembly is added, then the device can operate in humid conditions, but the device complexity increases

Engineering Contradiction:

Improveenvironmental adaptabilityVSAvoidstructural complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The sealed cavity serves multiple functions: it protects electronic components from water and humidity, houses the wireless data transceiving assembly, and provides a structured mounting space for various components. This multi-functionality reduces the need for additional separate structures, thereby limiting the increase in overall device complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The electronic components, including the wireless data transceiving assembly, are nested within the waterproof cavity, which itself is nested between the front case and bottom case. This nested arrangement allows multiple functional elements to be integrated into a compact structure without proportionally increasing device complexity.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Ease of operation

If USB cable is used for data transmission, then the device structure is simple, but the device cannot transmit data wirelessly in humid environments

Engineering Contradiction:

Improvedata transmission convenienceVSAvoiddata transmission reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The mechanical USB cable connection is replaced with a wireless data transceiving assembly that uses electromagnetic waves for data transmission. This substitution eliminates the need for physical contact during data transmission, making the device more convenient to use and reliable in humid environments where cable connections might be compromised.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

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 the wearable device to be used in humid environments and when exposed to water, ensuring reliable data transmission and charging while maintaining a compact and user-friendly design.

Implementation Method 1

a front case; a bottom case joined with the front case to form a waterproof cavity

Methodology Applied

Scientific EffectPhysical Containment: Physical Containment

Implementation Method 2

forming a front case and a bottom case from a polycarbonate material by thermo-molding

Methodology Applied

Scientific EffectThermo-molding:

Implementation Method 3

sealing the cavity to be waterproof

Methodology Applied

Scientific EffectSealing:

Data Source

PatentUS9615791B2Wearable device and method for manufacturing the same

Publication Date: 2017.04.11 XIAOMI INC

AI summary

A main body of a wearable device, includes: a front case; a bottom case joined with the front case to form a waterproof cavity; and electronic components disposed in the cavity, the electronic components including a printed circuit board (PCB) having a wireless data transceiving assembly, wherein the bottom case includes two charging contacts formed on an outer side of the bottom case and electrically coupled to the electronic components.