Watchband Attachment System with Longitudinal Locking Mechanism

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Solution Overview

Problem

Existing wearable device attachment systems, such as watchbands, often lack user-friendly mechanisms for secure retention and easy release, requiring specialized tools or expertise, and may not provide adequate retention force while also affecting the aesthetic appeal of the device.

Innovation Solution

The development of a locking mechanism that allows watchbands to be connected to a watch housing through direct longitudinal movement, with secure engagement and controlled release via longitudinal and lateral lock mechanisms, enabling intuitive and comfortable attachment and detachment without compromising the device's appearance.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If traditional pin-based attachment systems are used, then secure retention is achieved, but user-friendly operation and ease of removal are compromised

Engineering Contradiction:

Improveretention forceVSAvoiduser-friendly attachment and removal

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The attachment system is divided into separate functional components: a pin element for securement, a locking mechanism with movable and fixed portions, and a release mechanism. This segmentation allows each component to perform its specific function optimally while maintaining overall system reliability and user-friendly operation.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The locking mechanism incorporates movable and fixed portions that can transition between locked and unlocked states. The movable portion responds to user input (pushing or pulling movements) to dynamically change the attachment state, enabling easy removal while maintaining secure retention during normal wear.

Inventive Principle:

Principle #15Dynamics

2Reliability

If robust locking mechanisms are implemented, then adequate retention force is provided, but device complexity and aesthetic appearance are adversely affected

Engineering Contradiction:

Improveretention forceVSAvoidmechanism robustness

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The complex locking and release functions are extracted into a dedicated, compact mechanism that can be integrated into the watchband structure without adding overall device complexity. The movable and fixed locking portions work together in a space-efficient arrangement that maintains aesthetic appearance.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The locking mechanism components are nested within each other, with the movable portion fitting within or alongside the fixed portion. This nested arrangement minimizes the overall size of the mechanism, reducing its visual impact and maintaining the elegance of the consumer product.

Inventive Principle:

Principle #7Nested doll (Nesting)

3Reliability

If specialized tools or technician assistance are required for band removal, then secure attachment is maintained, but ease of repair and user accessibility are compromised

Engineering Contradiction:

Improveattachment securityVSAvoiduser accessibility for removal and replacement

Core Design Contradiction:

ReliabilityVSEase of repair

Solution Approach 1:

The release mechanism is designed to be operated directly by the user without requiring specialized tools or technician assistance. The movable and fixed locking portions are configured so that simple pushing or pulling movements on the band directly trigger the release mechanism, enabling users to easily remove and replace bands themselves.

Inventive Principle:

Principle #25Self-service

4Adaptability or versatility

If elasticated expansion-type bands are used, then fit adjustment flexibility is improved, but adequate retention force and structural integrity are compromised

Engineering Contradiction:

Improvefit adjustment flexibilityVSAvoidretention force

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent combines the flexibility of elasticated bands with the secure retention of a mechanical locking mechanism. The band can be elasticated for fit adjustment while the pin and locking mechanism provide adequate retention force, merging the advantages of both approaches.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The locking mechanism allows for parameter changes in the attachment state, transitioning between locked and unlocked conditions. This enables the band to maintain both flexibility for fit adjustment and sufficient retention force when secured, by changing the mechanical state of the attachment rather than relying solely on elastic tension.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10327520B1Attachment system for watchband

Publication Date: 2019.06.25 APPLE INC

AI summary

Wearable electronic devices, such as watches, can be provided with an attachment system for connecting and releasing a removable module that interfaces with some portion of the electronic device. For example, a watch can include locking mechanisms that allow a user to connect a watchband to a watch housing by moving the watchband directly toward the watch housing. An attachment unit of a watchband can be moved in a direction along its own longitudinal axis to securely engage the watch housing. Once engaged, one or more locking mechanisms limit longitudinal movement of the attachment unit away from the watch housing. One or more locking mechanisms also limit lateral movement of the attachment unit with respect to the watch housing until a user releases the one or more locking mechanisms and enables the lateral movement.