Skate Wheel Spring Lock Mechanism for Secure Immobilization
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Solution Overview
Problem
Conventional roller skates lack a mechanism to lock the wheels, rendering them unusable when a secure stop is needed.
Innovation Solution
A spring lock mechanism is integrated into the skate, featuring a housing, pin, button, back plate, springs, and sliding member, allowing the pin to extend into the wheel's elongated holes for locking and unlocking through a controlled mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a spring lock mechanism is added to the skate wheel, then the wheel can be locked securely, but the device complexity increases
Solution Approach 1:
The pin is nested within the housing, with the head portion positioned inside the housing and the locking end extending outward. The sliding member moves within the housing to control the pin's extension, creating a compact nested structure that provides locking functionality without excessive external complexity
Solution Approach 2:
The sliding member acts as an intermediary between the button and the pin. When the button is pressed, it moves the sliding member, which in turn moves the pin to extend or retract. This intermediary mechanism translates simple button pressure into controlled pin movement, achieving reliable locking while maintaining ease of operation
2Reliability
If a pin extending mechanism is implemented, then the wheel can be locked, but the device structure becomes more complex
Solution Approach 1:
Multiple components are merged into a single integrated housing structure. The housing contains the pin, sliding member, springs, and button mechanism all in one unit that is threadedly secured to the skate. This merging reduces the number of separate parts and simplifies the overall structure while maintaining the locking function
Solution Approach 2:
The first biasing member (spring) automatically returns the sliding member to its original position after the button is pressed. The second biasing member (spring) automatically returns the pin to its retracted position when the sliding member moves. These self-service features eliminate the need for additional return mechanisms, simplifying the overall structure
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
Enables secure locking and unlocking of the skate wheels, providing a reliable means to immobilize the skate when desired.
Implementation Method 1
a first biasing member secured to the back plate
Implementation Method 2
a first biasing member secured to the back plate
Implementation Method 3
a second biasing member disposed on the pin, the second biasing member having a first end urging against an inner surface of the housing proximate the second hole and a second end urging against the stop member
Data Source
AI summary
A spring lock for a skate wheel includes a housing including opposite first and second holes, and a third hole; a pin through the first and second holes and including first and second grooves; a button on the third hole; a back plate on a back of the housing; a first biasing member secured to the back plate; a stop member secured to the first groove; a sliding member having one end urging against the first biasing member and the other end contacting the button to slidably dispose on the second groove, the sliding member including small and large holes; and a second biasing member on the pin and having one end urging against an inner surface of the housing and the other end urging against the stop member. In a locked state, the pin extends into an elongated hole of between two spokes of the wheel.