Ski Binding Toe Piece Safety Bar for Wide Skis
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Solution Overview
Problem
Wide skis generate high lateral forces during turns, leading to unintentional loosening of ski bindings, particularly at the toe piece, due to increased distance from the ski's longitudinal edge to the binding, necessitating a secure connection for both touring and downhill modes.
Innovation Solution
A ski binding with a toe piece featuring two pivotable pins and a safety bar that moves from a rest to a safety position to securely hold the ski boot, preventing premature lateral release, and a heel piece that pivots perpendicularly for side release, allowing for quick mode switching without adjusting the toe or heel pieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If the distance between the ski's longitudinal edge and the binding is increased to accommodate wider skis, then the skiing performance and deep snow capability are improved, but the lateral forces on the toe piece increase leading to unintentional release
Solution Approach 1:
The binding system is divided into two distinct securing mechanisms: the original toe piece with pins for touring mode, and an additional safety bar with locking elements for downhill mode. This segmentation allows each component to be optimized for its specific function while working together to solve the overall problem of binding security on wide skis
Solution Approach 2:
The safety bar with its locking elements is positioned to preemptively counteract the harmful lateral forces generated by wide ski geometry. The locking elements engage with the boot sole before lateral release can occur, preventing the unintentional release that would otherwise result from the increased lever arm created by wide ski construction
2Reliability
If a safety mechanism is added to prevent unintentional release on wide skis, then the binding security is improved, but the device complexity increases
Solution Approach 1:
The safety bar is designed as a multi-functional component that serves multiple purposes: it provides lateral security during downhill skiing through its locking elements, and can be positioned to accommodate both touring and downhill modes. This universality reduces the need for entirely separate systems while maintaining binding security across different skiing disciplines
Solution Approach 2:
Instead of modifying the traditional toe piece to handle wide ski forces, the invention inverts the approach by adding a separate safety bar that works in conjunction with the original toe piece. The safety bar becomes the primary load-bearing element for lateral forces, while the original toe piece maintains its touring function, effectively reversing the expected hierarchy of component functions
3Strength
If the toe piece is adjusted for downhill mode on wide skis, then the lateral force resistance is improved, but the risk of unintentional release during mode transitions increases
Solution Approach 1:
The locking elements on the safety bar are pre-positioned to engage with the boot sole in downhill mode. This preliminary positioning ensures that when the user transitions to downhill skiing, the lateral security is already in place before significant lateral forces are applied, preventing unintentional release during the critical transition period
Solution Approach 2:
The safety bar acts as an intermediary mechanism between the user's boot and the ski, providing an additional layer of security during mode transitions. The locking elements serve as a mediator that can engage or disengage depending on the skiing mode, smoothing the transition between touring and downhill configurations without creating instability
Data Source
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AI summary
Ski binding, preferably a combined downhill and touring ski binding, with a toe piece (1) and a heel piece, wherein the toe piece (1) comprises: a base structure (2), at least one sole holder (3) in the form of a pin, wherein the sole holder (3) connects a toe end of a ski boot to a ski during touring, a tensioning device (4) with which the at least one pin (3) can be moved from a rest position into a pin receptacle formed by or on a ski boot sole, and a locking bar (5) which can be moved from a rest position into a locking position in which the locking bar (5) holds the ski boot on the ski for a piste run, wherein the locking bar (5) is arranged below the ski boot sole in a rest position, is fixed at the base (2) in the rest position and does not pivot into the locking position on its own when unloaded.