Bipyramidal Puzzle Pieces for Stable 2D and 3D Assembly

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Solution Overview

Problem

Existing puzzles with sphere-shaped pieces suffer from instability due to small contact areas leading to shear, limiting complex three-dimensional structure formation and stability, and offer limited stacking and rotation possibilities.

Innovation Solution

Puzzle pieces are designed with a hexagonal dihexagonal bipyramidal structure, featuring a dihexagonal bipyramidal structure with six planes of symmetry, allowing stable positioning in multiple directions and minimizing shear, combined with a puzzle board having indentations that support these pieces for both two- and three-dimensional puzzles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Stability of the object's composition

If puzzle pieces are made with recesses and protrusions for joining, then assembly stability is improved, but manufacturing complexity increases

Engineering Contradiction:
Improveassembly stabilityVSAvoidmanufacturing complexity
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The puzzle board is segmented into multiple individual puzzle pieces, each with independent recesses and protrusions. This segmentation allows each piece to be manufactured separately using standard molding techniques, reducing overall manufacturing complexity while maintaining assembly stability through the interlocking design of each piece's recesses and protrusions.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The recesses and protrusions are designed to merge multiple puzzle pieces into a single stable assembly. The protrusion of one piece fits into the recess of another, creating a unified structure that maintains stability while using simple, manufacturable geometric features on each individual piece.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of operation

If puzzle pieces include images and instructions on the board, then user guidance is improved, but device complexity increases

Engineering Contradiction:
Improveuser guidanceVSAvoiddevice complexity
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The puzzle board serves multiple functions: it provides the playing surface, displays instructional images, and offers magnetic attachment for metal puzzle pieces. By integrating these functions into a single component, the design improves user guidance without proportionally increasing device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

Images and instructions act as intermediary elements between the puzzle pieces and the user. These visual guides mediate the assembly process by providing directional cues, allowing users to assemble the puzzle correctly without increasing the physical complexity of the puzzle pieces themselves.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Ease of operation

If metal puzzle pieces are used with magnetic attachment, then assembly ease is improved, but manufacturing cost increases

Engineering Contradiction:
Improveassembly easeVSAvoidmanufacturing cost
Core Design Contradiction:
Ease of operationVSEase of manufacture

Solution Approach 1:

The patent uses magnetic fields (analogous to pneumatic/hydraulic systems in terms of invisible force application) to enable automatic attachment of metal puzzle pieces to the board. The magnets embedded in the board create an invisible holding force that simplifies assembly while using inexpensive magnetic materials and standard embedding techniques.

Inventive Principle:
Principle #29Pneumatics and hydraulics

Solution Approach 2:

The puzzle board uses composite construction combining non-magnetic material with embedded magnetic elements. This composite approach allows the board to provide both structural support and magnetic attachment functionality, improving assembly ease while keeping manufacturing costs reasonable through the use of common magnetic materials embedded in a standard board substrate.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentEP4460379B1Puzzle comprising single and/or multiple puzzle pieces, puzzle board and kit comprising puzzle and puzzle board
Publication Date: 2026.05.20 SMART NV
  • EP4460379B1 patent drawingFigure 1
  • EP4460379B1 patent drawingFigure 2
  • EP4460379B1 patent drawingFigure 3

AI summary

The present invention relates to a puzzle comprising single and/or multiple puzzle pieces constructed from puzzle blocks, wherein a single puzzle piece is constructed from a single puzzle block and a multiple puzzle piece is constructed from at least two puzzle blocks, wherein each puzzle block describes a bipyramidal structure, wherein each side surface of the pyramidal structures is suitable for optimally supporting the puzzle block on one or more surfaces in a puzzle board. Also, the invention relates to a puzzle board suitable for solving both two-dimensional and three-dimensional puzzles, wherein the puzzle board is provided with a top surface and a bottom surface, wherein both the top surface and the bottom surface comprise a puzzle field consisting of regular positions forming a two-dimensional field, wherein each position is provided with an indentation in the puzzle board corresponding to the shape of a puzzle block belonging to a puzzle in accordance with the invention. In a third aspect, the invention relates to a kit comprising said puzzle and said puzzle board.