Bracelet Length Adjustment Device With Separate Indexing And Guiding Mechanisms

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Solution Overview

Problem

Existing bracelet adjustment mechanisms require complex user manipulation to achieve optimal length, often resulting in suboptimal final lengths and user frustration.

Innovation Solution

A device for adjusting the length of a bracelet that incorporates an indexing device distinct from a guiding device, utilizing elastic functional elements and separate fixing and indexing elements to facilitate intuitive and reliable length adjustment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If existing adjustment mechanisms with notching and movable elements are used, then bracelet length adjustment is possible, but user manipulation becomes complex and difficult

Engineering Contradiction:
Improveuser-friendliness of adjustmentVSAvoidcomplexity of manipulation required
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The patent divides the adjustment mechanism into functionally distinct components: an indexing device with indexing elements for positioning, a guiding device with guiding elements for movement guidance, and a fixing device with fixing elements for securing. This segmentation allows each component to perform its specific function independently, simplifying the overall user interaction while maintaining precise control over the adjustment process

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The indexing elements act as intermediaries between the user's manipulation intent and the final positioning of the adjustment link. By providing discrete indexing positions that guide the movement, the system mediates the complex coordination required between multiple movable elements and notching features, making the adjustment process more intuitive and easier to control

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If multiple movable elements and notching are used for adjustment, then precise length positioning is achieved, but reliability of adjustment operation decreases

Engineering Contradiction:
Improvereliability of adjustment operationVSAvoidnumber of movable elements
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

By separating the indexing function from the guiding and fixing functions, the patent reduces the complexity of coordination between multiple movable elements. Each element has a dedicated function, which improves reliability by eliminating the need for precise synchronization of multiple elements simultaneously engaging with notching features

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The indexing elements pre-establish the possible positions of the adjustment link before the fixing operation occurs. This preliminary positioning guides the user to the correct location, ensuring that when the fixing elements engage, they do so at the intended position, thereby improving reliability without requiring complex real-time coordination of multiple elements

Inventive Principle:
Principle #10Preliminary action

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

The solution enhances the user-friendliness and reliability of bracelet length adjustment, allowing for precise and easy manipulation to achieve desired lengths without complex user interaction.

Implementation Method 1

wherein the first indexing element is independent of and/or distinct from the first guiding element and/or wherein the second indexing element is independent of and/or distinct from the second guiding element

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS12274336B2Device for adjusting the length of a bracelet
Publication Date: 2025.04.15 MONTRES TUDOR
  • US12274336B2 patent drawing
  • US12274336B2 patent drawing
  • US12274336B2 patent drawing

AI summary

An adjustment device (100; 100′; 100″) for adjusting the length of a bracelet, having at least one adjustment assembly (10; 10′; 10″) movable relative to a clasp cover (7; 7′; 7″), the adjustment assembly and the cover being respectively provided with a first and a second fixing element (11, 71; 11′, 71′; 11″, 71″) for their respective fixing according to several positions capable of inducing different bracelet lengths, and also being provided respectively with a first and a second indexing element (21, 72; 21′, 72′; 21″, 72″) for their temporary respective positioning according to one of the several positions, the adjustment assembly (10; 10′; 10″) also comprising a guiding device including a first guiding element (3, 4, 5; 3′, 4′, 5′; 3″, 4″) cooperating with a second guiding element (74; 74′; 74″) of the cover (7; 7′; 7″) to guide the displacement of the adjusting assembly (10; 10′; 10″) relative to the cover (7; 7′; 7″), the first indexing element (21; 21′; 21″) being independent of and/or distinct from the first guiding element (3, 4, 5; 3′, 4′, 5′; 3″, 4″) and/or the second indexing element (72; 72′; 72″) being independent of and/or distinct from the second guiding element (74; 74′; 74″).