Memory Metal Wristband Structure for Buckle-Free Wrist-Worn Devices

Solution Overview

Problem

Existing wrist-worn devices require users to buckle or unbuckle a wristband buckle, which is inconvenient and affects user experience.

Innovation Solution

A wristband with a memory metal wire that naturally maintains a ring shape, eliminating the need for a buckle and allowing easy wearing and removal by switching between wearing methods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a wristband buckle and positioning holes are provided to connect wristbands, then the wrist-worn device can be stably worn on the user's wrist, but the user needs to buckle or unbuckle the wristband buckle during wearing and removing, which is inconvenient to operate

Engineering Contradiction:

Improvestable wearingVSAvoidwearing and removing convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent removes the wristband buckle and positioning hole mechanism entirely, extracting the fastening function from the system. The wristband is designed as a continuous ring without any buckles or positioning features, eliminating the need for user manipulation of fastening components.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The wristband is designed to automatically maintain its ring shape and provide stable wearing through its own structural properties. The elastic material and ring configuration enable the wristband to self-adjust and maintain positioning without requiring external fastening mechanisms or user intervention.

Inventive Principle:

Principle #25Self-service

2Reliability

If a wristband buckle and positioning holes are provided to connect wristbands, then the wrist-worn device can be stably worn on the user's wrist, but this structure increases device complexity and assembly costs

Engineering Contradiction:

Improvestable wearingVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent removes the wristband buckle and positioning hole mechanism entirely, extracting the fastening function from the system. The wristband is designed as a continuous ring without any buckles or positioning features, eliminating the need for user manipulation of fastening components.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent merges the wristband and device body into a single integrated unit where the device body is directly attached to the continuous ring wristband. This eliminates the need for separate connection mechanisms between wristband and device, reducing overall system complexity.

Inventive Principle:

Principle #5Merging (Combining)

3Ease of operation

If a memory metal wire is used to maintain ring shape, then the wristband naturally maintains wearing state without buckles, but additional components like covering caps and installation cavities are needed

Engineering Contradiction:

Improvewearing and removing convenienceVSAvoidcomponent quantity

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

The wristband is designed to automatically maintain its ring shape and provide stable wearing through its own structural properties. The elastic material and ring configuration enable the wristband to self-adjust and maintain positioning without requiring external fastening mechanisms or user intervention.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The memory metal wire is nested within the band body part, with the wire embedded in a cavity or channel within the wristband structure. This integration allows the memory metal to provide shape memory functionality while occupying minimal space and requiring minimal additional components.

Inventive Principle:

Principle #7Nested doll (Nesting)

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 quick and convenient wearing and removal of wrist-worn devices without buckling, saving material and assembly costs while enhancing user experience and functionality.

Implementation Method 1

The memory metal wire has a memory state of being ring-shaped in a natural state, so that the band body part naturally maintains a ring shape

Methodology Applied

Scientific EffectShape memory effect: Shape Memory Alloy

Data Source

PatentUS12414614B2Wristband and wrist-worn device

Publication Date: 2025.09.16 GOERTEK INC

AI summary

Disclosed are a wristband and a wrist-worn device. The wristband includes a band body part and a memory metal wire. The band body part has two end portions separable from each other. The memory metal wire has a strip shape extending along a length direction of the band body part and provided to the band body part. The memory metal wire has a memory state of being ring-shaped in a natural state, so that the band body part naturally maintains a ring shape, and the wristband naturally maintains a wearing state. A first installation cavity is provided inside the band body part, and the memory metal wire is accommodated and installed in the first installation cavity.