Telemark Ski Binding Toe Mating Mechanism
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Solution Overview
Problem
Traditional telemark ski bindings suffer from the 'elf toe' or 'rocker launch' effect, where the toe of the boot becomes angled due to fixed restraining mechanisms, leading to uneven force distribution and instability during skiing.
Innovation Solution
The proposed ski binding system features a toe mating mechanism that allows the toe to rotate on an axis parallel to the boot's flex axis, eliminating the 'elf toe' effect, along with a sliding plate system for improved lateral edge control and force transfer, and customizable pivot options for variable 'active feel', along with a lightweight and snow-removing design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed restraining mechanism (toe box) is used to hold the toe of the boot, then the toe is securely positioned, but the 'elf toe' or 'rocker launch' effect occurs causing instability and uneven force distribution
Solution Approach 1:
The patent replaces the fixed restraining toe box with a dynamic cable system that allows the toe to move and flex naturally with the boot's bellows configuration. The cable maintains engagement while permitting the toe to angle during flexing cycles, eliminating the elf toe effect while maintaining secure positioning.
Solution Approach 2:
The invention changes the constraint parameter from rigid fixed positioning to flexible cable engagement. The cable system adjusts its constraint level dynamically, allowing the toe to achieve natural flex angles without the plastic deformation that causes rocker launch, thereby maintaining both security and alignment stability.
2Reliability
If the toe piece is fixed to the ski for downhill movement, then control and precision are improved, but freedom and ease of movement during walking and climbing are reduced
Solution Approach 1:
The cable system provides dynamic engagement that adapts to different skiing modes. During downhill movement, the cable maintains firm engagement for precise control. During touring and walking, the flexible cable allows greater freedom of movement compared to rigid fixed mechanisms, eliminating the need for switching between fixed and free-pivot states.
3Reliability
If a cable or flexible linkage is used to engage the heel portion, then heel stability is increased, but the user must manually actuate the heel piece for engagement
Solution Approach 1:
The cable system is designed to automatically engage and disengage the heel portion through the natural flexing and movement of the boot. The bellows-like configuration of the boot shell drives the cable engagement mechanism, eliminating the need for manual actuation while maintaining heel stability during skiing.
4Force
If conventional fixed toe restraining mechanisms are used, then the toe is held firmly, but uneven force distribution and rocker launch occur during skiing
Solution Approach 1:
The invention transitions from rigid force application to flexible cable-based force distribution. The cable system distributes restraint forces more evenly across the toe and boot interface, accommodating the natural flexing motion of the boot shell and preventing the concentration of forces that cause rocker launch and uneven loading.
Data Source
AI summary
The present invention relates to a ski binding used in telemark skiing. An exemplary system maintains a toe of a ski boot in association with a ski while permitting a heel of the ski boot to elevate to a top surface of the ski. The binding system comprises several complex subsystems, such as a toe mating mechanism, a toe plate system, a base plate system, a heel fastening mechanism, a sliding plate system, and rail system.