Spiked Shoe Stud Locking via Inertial Torque
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for securing studded shoes fail to effectively prevent stud detachment during high-force motions, such as lateral or acceleration forces, and do not utilize the principle of inertia for secure fastening.
Innovation Solution
A method employing a multi-start threaded connection between a stud and a receptacle, where the fastening direction aligns with the torque generated by the ground force, using a counterclockwise or clockwise direction to secure the stud in place, leveraging the effect of inertia for a tight and secure attachment without complex locking mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional threaded connections (single-start or multi-start) are used to secure studs, then the connection provides basic fastening capability, but the stud can still accidentally detach during high-force motions such as lateral forces or fast acceleration
Solution Approach 1:
The patent inverts the conventional threaded connection by using left-hand threads instead of right-hand threads. This inversion causes the inertial force generated during forward acceleration to act in the tightening direction rather than the loosening direction, thereby preventing accidental detachment of studs during high-force motions
Solution Approach 2:
The patent changes the thread direction parameter from conventional right-hand threading to left-hand threading. This parameter change fundamentally alters the interaction between inertial forces and the threaded connection, transforming the loosening effect into a tightening effect during acceleration
2Reliability
If conventional threaded connections are used, then the stud can be secured to the sole, but the connection requires multiple turns to achieve secure fastening and to detach the stud
Solution Approach 1:
By inverting the thread direction to left-hand threading, the patent enables the inertial force during acceleration to assist the tightening process, reducing the number of turns needed to achieve secure fastening compared to conventional right-hand threaded connections
3Reliability
If existing locking mechanisms (toothed elements, locking ratchets) are added to prevent stud detachment, then the connection strength improves, but the device complexity increases
Solution Approach 1:
The patent eliminates complex locking mechanisms by simply inverting the thread direction. The left-hand threading alone provides the necessary retention by utilizing inertial forces, thereby maintaining high reliability while minimizing device complexity
Solution Approach 2:
The left-hand threaded connection is self-locking through the inertial force generated during acceleration. The system uses the motion itself to maintain the locking effect, eliminating the need for additional passive locking components such as toothed elements or ratchets
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
This method ensures secure attachment of studs during dynamic movements, reduces the number of turns required for attachment and detachment, and provides precise locking, enhancing stability and durability of the shoe sole, while allowing for easier stud replacement and improved energy recovery rates.
Implementation Method 1
employing the fastening torque as a result of the force applied by the ground to said bolt to form the bolt and the threaded socket as tightly inter-engaging locking accessories
Implementation Method 2
Method of locking spiked shoes using effect of inertia
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
A method for securing studded shoes by using the effect of inertia, wherein a studded shoe, comprising a structure of stud and receptacle combination, the stud including a ground-engaging part. The stud and the receptacle are adapted to be secured together by a threaded connection comprising a bolt (6, 8) on one of the components of the stud and a threaded socket (5, 7) on the receptacle, both adapted such that said bolt (6, 8) can be driven into said threaded socket (5, 7). A securing means of the components serves to become inter-engaged at least when the bolt (6, 8) is fully driven into the threaded socket (5, 7) to resist unscrewing of the components. The securing means comprises at least one locking accessory that fastens in the counterclockwise direction, in an arrangement such that the direction of torque formed by the direction of the inertia in wearer's shoe sole and the center of the threaded connection, and the relative number and/or position of the threads of the threaded connection determine the position and locking direction of the stud relative to the receptacle.