Roller Skate Longitudinal Insertion for Stable Assembly
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Solution Overview
Problem
Conventional roller skates have complex and difficult-to-manufacture structures for attaching the roller assembly to the boot, making assembly and disassembly cumbersome and unstable.
Innovation Solution
A roller skate design featuring a boot with longitudinal receptacles and a roller assembly with insertion portions that can be easily assembled and disassembled laterally, secured by fasteners through blocking flanges and engaging flanges, providing a simple and stable combination.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If many fasteners (such as screws) are used to fasten the roller assembly to the sole, then the connection strength is improved, but the structure becomes complex and difficult to manufacture
Solution Approach 1:
The fastening system is segmented into modular components: the roller assembly frame includes integrated fastening members (protrusions) that pair with corresponding receptacles in the sole. This segmentation allows the fastening function to be distributed across multiple simple elements rather than requiring a complex monolithic structure, reducing overall device complexity while maintaining connection strength.
Solution Approach 2:
The fastening members are merged with the roller assembly frame as integrated features rather than separate components. The protrusions are formed as part of the frame structure, and the receptacles are formed as part of the sole, eliminating the need for separate fastener elements and simplifying the overall structure while maintaining secure connection.
2Stability of the object's composition
If holes are formed on the frame and sole for fasteners to pass through, then the connection stability is improved, but the manufacturing difficulty increases
Solution Approach 1:
The receptacles are pre-formed as integral features of the sole during sole manufacturing, and the protrusions are pre-formed as integral features of the frame during frame manufacturing. This preliminary action eliminates the need for post-manufacturing hole drilling and fastener installation, simplifying the manufacturing process while ensuring stable connection through precise pre-formed geometries.
3Stability of the object's composition
If projections are inserted into slots and locked by locking members, then the assembly stability is improved, but the assembly and disassembly process becomes complex and time-consuming
Solution Approach 1:
The fastening system is designed to be self-aligning and self-securing: the protrusions on the frame automatically align with and insert into the receptacles on the sole without requiring external locking members or complex assembly steps. The interlocking geometries provide automatic stabilization, eliminating the need for additional locking operations and reducing assembly time.
4Reliability
If a complex fastening structure with multiple fasteners is used, then the connection reliability is improved, but the ease of assembly and disassembly deteriorates
Solution Approach 1:
The fastening system incorporates dynamic alignment features where the protrusions and receptacles are designed with tolerances and geometries that allow for self-alignment during assembly. This dynamic adjustment capability ensures reliable connection even with variations in manufacturing tolerances, while the simple interlocking mechanism maintains ease of assembly and disassembly without requiring complex procedures.
Data Source
AI summary
A roller skate is provided, wherein the roller skate includes: a boot including a body portion and a sole, the sole having a longitudinal direction and including two receptacles arranged in interval in the longitudinal direction, each receptacle including a wall and at least one slot open on the sole toward the longitudinal direction, the wall defining at least one opening of the at least one slot; a roller assembly including a frame and rollers disposed on the frame, the frame including two insertion portions arranged in interval in the longitudinal direction, the two insertion portions being respectively insertable in and detachable from the two receptacles in the longitudinal direction, each insertion portion being blocked by the wall of one of the two receptacles in a blocking direction away from the sole; and a plurality of fasteners securing the frame to the sole.