3D puzzle
A three-dimensional puzzle using L, U, T, and Z parts allows construction of a large cube, addressing the lack of toys for stacking flat parts, promoting cognitive development and suitability for all ages.
Patent Information
- Application Number
- JP2025003799U
- Authority / Receiving Office
- JP · JP
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-01-08
- Estimated Expiration
- 2035-11-04
AI Technical Summary
There are no toys that allow construction of a large cube by stacking multiple types of flat parts, limiting the variety of safe toys available for all age groups.
A three-dimensional puzzle composed of specific parts (L, U, T, and Z) is created, allowing assembly into a cube with a side three times the length of the initial cube, using materials like cypress wood with rounded corners and edges.
Enhances cognitive development in young children and maintains cognitive function in the elderly, suitable for all age groups from young children to the elderly.
Smart Images

Figure 0003254224000001_ABST
Abstract
Description
[Technical Field]
[0001] This relates to a toy that allows a specific three-dimensional shape to be constructed by stacking multiple parts. [Background technology]
[0002] When describing a shape made up of small cubes lined up in a row as "linear," a shape made up of small cubes lined up in a single layer as "flat," and a shape made up of small cubes stacked in two or more layers as "three-dimensional," toys that allow you to build a large cube by stacking multiple parts are commercially available, including ones with a single type of L-shaped part, and ones with multiple types including linear and three-dimensional parts, but there were no toys that allow you to build a large cube by stacking multiple types of flat parts. [Prior art documents] [Non-patent literature]
[0003] [Non-Patent Document 1] Masudaya Corporation (2-6-4 Kuramae, Taito-ku, Tokyo 111-0051) Product Catalog [Non-patent document 2] MonotaRO Co., Ltd. (1F Lumiere Court Sumiyoshi, 3-2-8 Abiko, Sumiyoshi-ku, Osaka City, Osaka Prefecture, 558-0014) Product Catalog Summary of the Invention [Problem to be solved by the invention]
[0004] Increase the selection of safe toys that can be used by everyone from young children to the elderly. [Means for solving the problem]
[0005] A cube with sides equal to the height of a board with a height-length-width ratio of 1:2:3 is taken from a board, and a part obtained by removing one corner is called part L, one part removed from the centre of the long side is called part U, one part removed from each end of the long side is called part T, and one part removed from each diagonal corner is called part Z. This is a three-dimensional puzzle consisting of two parts L, two parts U, two parts T, and one part Z, which can be combined to form a cube with a side three times the length of the cube above. [Effects of the Invention]
[0006] The use of the toy of this invention can contribute to the development of intelligence in young children and the maintenance of cognitive function in the elderly. [Brief explanation of the drawings]
[0007] [Figure 1] This is a perspective view showing how a cube can be created by assembling each piece of the three-dimensional puzzle of this invention so that the black circles are in contact. DETAILED DESCRIPTION OF THE INVENTION
[0008] The 3D puzzle of this invention can be made of cypress wood, but the material is not limited to cypress. The corners and edges are rounded to prevent injury. [Example]
[0009] Two pieces L, each sandwiched between a hexagon of 4cm, 2cm, 2cm, 2cm, 6cm, 4cm, two pieces U, each sandwiched between an octagon of 2cm, 2cm, 2cm, 2cm, 2cm, 4cm, 6cm, 4cm, two pieces T, each sandwiched between an octagon of 6cm, 2cm, 2cm, 2cm, 2cm, 2cm, 2cm, 2cm, and one piece Z, each sandwiched between an octagon of 4cm, 4cm, 2cm, 2cm, 4cm, 4cm, 2cm, 2cm, were cut out of a 2cm thick cypress board to create the three-dimensional puzzle of this invention. It was confirmed that these pieces could be assembled into a cube. [Industrial Applicability]
[0010] The three-dimensional puzzle of this invention is expected to be in demand in homes and elderly care facilities, targeting people of all ages, from young children to the elderly.
Claims
[Claim 1] A three-dimensional puzzle consisting of two parts L, two parts U, two parts T and one part Z can be combined to form a cube with a side equal to the height of the board with a height, length and width ratio of 1:2:3, where the part obtained by removing one piece from a corner is called part L, the part obtained by removing one piece from the center of the long side is called part U, the part obtained by removing one piece from each end of the long side is called part T, and the part obtained by removing one piece from each diagonal corner is called part Z.