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30-degree-angle regular triangular pyramid combined ball

A technology of regular triangular pyramids and pentagonal groups, which is applied in the field of combined sphere production, can solve the problems of small cone angle and less firm and firm combination, and achieve the effects of easy production of components, ingenious and simple design, and convenient and regular insertion.

Inactive Publication Date: 2014-07-02
李平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the large conical angles of the existing regular triangular pyramid combination balls such as 90 degrees and 60 degrees, 30 degrees are less; the conical angles are small, and the combination is firm and firm. The invention provides a A 30-degree angle regular triangular pyramid combination ball

Method used

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  • 30-degree-angle regular triangular pyramid combined ball
  • 30-degree-angle regular triangular pyramid combined ball
  • 30-degree-angle regular triangular pyramid combined ball

Examples

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Embodiment Construction

[0020] The 30-degree angle regular triangular pyramid combination ball is composed of 30 identical parts including part 1, part 2...part 30; the dotted line is used to indicate the positive fold line of the front half fold, the solid line plus a circle represents the reverse fold line of the back face fold, and the solid line is marked with a dot indicator line;

[0021] Take a rectangular paper whose length, width and width are 5:4, and make two left and right longitudinal positive fold lines perpendicular to the upper and lower edges of the rectangular paper. The two vertical positive fold lines divide the rectangular paper into left and right There are three congruent small rectangles in the middle and right; in the small rectangle on the left, make a positive polyline at the left upper corner and the lower right corner, and in the small rectangle on the right, make a positive polyline at the right diagonal at the upper left corner and lower right corner; for example figure...

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PUM

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Abstract

The invention provides a 30-degree-angle regular triangular pyramid combined ball, and relates to a manufacturing method for a combined ball body. The 30-degree-angle regular triangular pyramid combined ball is combined by 30 identical components including a component 1, a component 2, a component 3, a component 4, a component 5, a component 6, a component 7, a component 8, a component 9, a component 10, a component 11, a component 12, a component 13, a component 14, a component 15, a component 16, a component 17, a component 18, a component 19, a component 20, a component 21, a component 22, a component 23, a component 24, a component 25, a component 26, a component 27, a component 28, a component 29 and a component 30. The manufacturing method for the combined ball comprises the following steps of folding rectangular paper with the width-to-length ratio of 5:4 into small rectangles with superposed middles; folding the rectangles into components with middle diagonal lines, long reverse folding lines and short reverse folding lines; dividing each component into an inserting portion and an inserted portion by using an angular bisector; inserting the inserting portion of the component 1 into an inserted opening of the component 2, and then inserting the component 2 in the component 3 and inserting the component 3 in the component 1 in the same manner so as to complete inserted connection of a regular triangular pyramid; performing inserted connection in the same manner under the condition that five regular triangular pyramids are arranged into a group, namely a pentagon group, and the regular triangular pyramids belong to the three pentagon groups; and forming a sphere with the 20 regular triangular pyramids, namely the 30-degree-angle regular triangular pyramid combined ball, in an inserted connection manner.. The 30-degree-angle regular triangular pyramid combined ball is skillful and simple in design and attractive and firm in appearance; and the components are manufactured easily and are in inserted connection conveniently and regularly.

Description

technical field [0001] The invention relates to a method for making a sphere, in particular to a method for making a combined sphere. Background technique [0002] At present, the taper angles of the known regular triangular pyramid combination balls are large, such as 90 degrees and 60 degrees, in the majority, and 30 degrees are less; the taper angles are small, and the combination is firm and firm. Contents of the invention [0003] In order to overcome the large conical angles of the existing regular triangular pyramid combination balls such as 90 degrees and 60 degrees, 30 degrees are less; the conical angles are small, and the combination is firm and firm. The invention provides a A 30-degree angle regular triangular pyramid combination ball. [0004] The technical solution adopted by the present invention to solve its technical problems is: the 30-degree angle regular triangular pyramid combination ball is composed of 30 identical parts in total from part 1, part 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B31D5/04
Inventor 李平
Owner 李平
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