Spinning Top Toy Tip Cover Locking Against Rotation
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Solution Overview
Problem
The top tip cover on conventional top toys easily comes off the shaft part, disrupting play, especially during rotation, due to insufficient fitting or wear over time.
Innovation Solution
A top toy design featuring a shaft part with a first engagement part that moves between raised and lowered positions, a second engagement part, and a top tip cover with a fourth engagement part that engages with the first engagement part to prevent separation, ensuring the cover remains attached during play.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the top tip cover is fitted on the shaft part from the top axial direction, then the top tip cover can be attached to the shaft part, but the top tip cover comes off easily due to insufficient fitting or wear
Solution Approach 1:
The engagement mechanism is divided into multiple independent engagement parts: a first engagement part (protrusion) on the shaft part, a second engagement part (groove) on the top tip cover, and a third engagement part (protrusion) on the trunk part. This segmentation allows each part to perform a specific locking function, preventing the top tip cover from coming off while maintaining manageable complexity through functional specialization.
Solution Approach 2:
The engagement parts are nested within the structure of the shaft part and top tip cover. The first engagement part protrudes from the shaft part and engages with the second engagement part groove, while the third engagement part on the trunk part further secures the assembly. This nested arrangement provides reliable attachment without requiring additional external locking components.
2Ease of operation
If the top tip cover and shaft part are not fitted sufficiently well, then assembly is easier, but the top tip cover will come off during rotation
Solution Approach 1:
The first engagement part (protrusion) and second engagement part (groove) are pre-configured in the shaft part and top tip cover respectively, creating an automatic locking mechanism. When the top tip cover is placed on the shaft part, the protrusion automatically engages with the groove, providing preliminary securing action that prevents detachment during rotation while maintaining ease of assembly through simple placement and rotation.
3Device complexity
If a simple fitting mechanism is used, then assembly is simpler, but additional locking components are needed to prevent detachment
Solution Approach 1:
The engagement parts are integrated directly into the shaft part and top tip cover structures. The first engagement part protrusion is formed as part of the shaft part, and the second engagement part groove is formed as part of the top tip cover, eliminating the need for separate locking components. This merging approach maintains mechanism simplicity while achieving reliable attachment through the combined action of the integrated engagement parts.
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
The design securely attaches the top tip cover to the shaft part, preventing unexpected detachment and allowing continuous play, even during collisions, without the need for additional locking components.
Implementation Method 1
The first engagement part is urged towards the raised position
Data Source
AI summary
A top toy includes a shaft part, a trunk part, and a top tip cover. The trunk part is detachably configured on the shaft part. The top tip cover is detachably configured on the shaft part at a longitudinal end. The shaft part includes a first engagement part being movably configured between a raised position and a lowered position in an axial direction and a second engagement part. The top tip includes a third engagement part being configured to be engaged by rotating in a first direction with the second engagement part to prevent the shaft part from separating from the trunk part in the axial direction. The top tip cover includes a fourth engagement part being configured to be engaged with the first engagement part to prevent the top tip cover from rotating in a second direction with respect to the shaft part.