Ski Binding Rear Element Longitudinal Adjustment Mechanism

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Solution Overview

Problem

Conventional ski safety bindings with pivoting heel pieces face issues of deformation and complex adjustment procedures, leading to safety concerns and increased costs due to the need to modify telescopic arms, which can result in improper boot retention.

Innovation Solution

A pivot attachment design where the side ears form a movable bar integral with an adjustable part, allowing longitudinal position adjustment without altering the length of the arms, enabling precise and faster adjustment and enhancing resistance to shocks and deformations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If telescopic arms are used to adjust the longitudinal position of the suspended body, then adaptability to different boot sizes is improved, but the arms become easily deformed and require complex adjustment procedures

Engineering Contradiction:

Improveadaptability to different boot sizesVSAvoidresistance to deformation

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The adjustment function is segmented from the arms and transferred to a separate translational element (screw mechanism) that moves the entire bar assembly. This allows the arms to remain simple, rigid structures while the adjustment capability is provided by the dedicated translational mechanism, resolving the contradiction between adaptability and structural integrity.

Inventive Principle:

Principle #1Segmentation

2Adaptability or versatility

If telescopic arms are adjusted to modify arm length, then the longitudinal position of the suspended body can be changed, but the adjustment procedure becomes complex and time-consuming

Engineering Contradiction:

Improveadjustability of suspended body positionVSAvoidcomplexity of adjustment procedure

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The translational element integrates multiple functions: it adjusts the longitudinal position of the bar, simultaneously adjusts both arms together, and provides precise positioning through its threaded mechanism. This merging of adjustment functions into a single element simplifies the overall procedure compared to adjusting two separate telescopic arms independently.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The translational element serves multiple purposes: it positions the bar longitudinally, maintains symmetry between both arms, and provides secure locking through its threaded design. This multi-functionality reduces the need for separate adjustment mechanisms for each arm, simplifying the overall adjustment process.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If individual arm length adjustment is performed, then adaptability is achieved, but improper adjustment causes unbalanced retention and safety problems

Engineering Contradiction:

Improveadjustability of binding positionVSAvoidprecision of adjustment

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

Both arms are adjusted simultaneously through the single translational element, ensuring perfect symmetry and balance. The threaded mechanism provides precise, controlled movement that is difficult to achieve when manually adjusting two separate telescopic arms, thereby eliminating retention imbalance issues.

Inventive Principle:

Principle #5Merging (Combining)

4Ease of manufacture

If telescopic arms are damaged, then the binding requires repair, but changing the arms is complex and requires changing the entire rear binding

Engineering Contradiction:

Improvesimplicity of component replacementVSAvoidcomplexity of binding replacement

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The binding is segmented into distinct, replaceable components: the bar with ears, the translational element, and the arms. This modular design allows damaged arms to be replaced independently without replacing the entire rear binding assembly, simplifying repair procedures and reducing costs.

Inventive Principle:

Principle #1Segmentation

Data Source

PatentEP3881912B1Rear element of a safety ski binding and ski provided with such a binding

Publication Date: 2024.11.20 SKIS ROSSIGNOL SA VOIRON FR

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AI summary

Rear element of a safety fastener (100) comprising a pivoting plate (1); a suspended body (6), two arms (5) mounted on each side of said suspended body (6) and two lugs (3) emerging from said pivoting plate (1), and a device for adjusting the longitudinal position of said suspended body characterized in that said pivoting plate (1) has a recess (2a, 2b) receiving a piece adjustable in translation (18b, 23) about a longitudinal axis (A2) of the fastener (100); said lugs (3) form the ends of a bar (4) movable in translation relative to said pivoting plate (1); said bar (4) being integral with said piece adjustable in translation (18b, 23) so that the movement of said piece adjustable in translation (18b, 23) allows the longitudinal position of said suspended body (6) to be modified.