Detachable Watch Strap for Multi-Vehicle Key Integration

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Solution Overview

Problem

The challenge of integrating multiple wearable devices, particularly smart devices and mechanical watches, on a user's wrist due to practicality and interference issues, along with the incompatibilities of vehicle security systems requiring multiple communication frequencies and physical adjustments, is addressed.

Innovation Solution

A single-part watch strap with integrated electronic communication devices and a detachable mechanism for attaching to a watch case, allowing a single watch to interact with various vehicle security systems, while maintaining mechanical timepiece functionality and minimizing interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple wearable devices are worn on the wrist to provide different functions, then functional versatility is improved, but device complexity and weight increase

Engineering Contradiction:
Improvefunctional versatilityVSAvoiddevice complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent combines multiple wearable device functions into a single integrated watch device. The watch case houses both the mechanical timekeeping movement and the electronic components for vehicle security system communication, merging what would traditionally require separate devices into one unified wearable.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The watch is designed to perform multiple functions: traditional timekeeping through the mechanical movement, and universal compatibility with multiple vehicle security systems through the electronic communication devices that support various communication frequencies and protocols.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If multiple wearable devices are worn on the wrist, then functional versatility is improved, but weight increases

Engineering Contradiction:
Improvefunctional versatilityVSAvoidweight
Core Design Contradiction:
Adaptability or versatilityVSWeight of moving object

Solution Approach 1:

The patent combines multiple wearable device functions into a single integrated watch device. The watch case houses both the mechanical timekeeping movement and the electronic components for vehicle security system communication, merging what would traditionally require separate devices into one unified wearable.

Inventive Principle:
Principle #5Merging (Combining)

3Adaptability or versatility

If multiple communication frequencies are integrated to work with all vehicle security systems, then adaptability is improved, but device size increases

Engineering Contradiction:
Improvevehicle security compatibilityVSAvoiddevice size
Core Design Contradiction:
Adaptability or versatilityVSVolume of moving object

Solution Approach 1:

The watch is designed to perform multiple functions: traditional timekeeping through the mechanical movement, and universal compatibility with multiple vehicle security systems through the electronic communication devices that support various communication frequencies and protocols.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The electronic communication devices are configured to dynamically switch between different communication frequencies and protocols based on which vehicle security system is being accessed, allowing a single device to adapt to multiple systems without requiring separate dedicated hardware for each frequency.

Inventive Principle:
Principle #15Dynamics

4Adaptability or versatility

If a mechanical watch is combined with electronic devices, then functional versatility is improved, but interference with wireless signals increases

Engineering Contradiction:
Improvefunctional versatilityVSAvoidwireless signal interference
Core Design Contradiction:
Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent physically separates the mechanical timekeeping movement from the electronic communication devices. The mechanical movement is housed in the traditional watch case while the electronic components are positioned in the strap assembly, creating spatial separation that reduces electromagnetic interference between the two systems.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The strap assembly acts as an intermediary structure that houses the electronic communication devices at a distance from the mechanical movement. This physical separation through the strap intermediary reduces direct electromagnetic interference while still allowing both systems to function within the same wearable device.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS12433376B2Combination watch and multi-car key
Publication Date: 2025.10.07 SENTURION INTERNATIONAL LTD
  • US12433376B2 patent drawing
  • US12433376B2 patent drawing
  • US12433376B2 patent drawing

AI summary

This application relates to a watch strap comprising a body having a first end, and a second end. The first end comprises a first watch case attachment, the second end comprises a second watch case attachment. In use, the first watch case attachment and second watch case attachment are configured for operation by a user to attach the watch strap to a watch case about a wrist of the user and then subsequently for operation, by the user, to detach the watch strap from the watch case allowing the strap to be removed from the user's wrist. A watch case and kit of parts are also disclosed.