CN2396464Y - Solid geometry inserting parts - Google Patents
Solid geometry inserting parts Download PDFInfo
- Publication number
- CN2396464Y CN2396464Y CN 99253763 CN99253763U CN2396464Y CN 2396464 Y CN2396464 Y CN 2396464Y CN 99253763 CN99253763 CN 99253763 CN 99253763 U CN99253763 U CN 99253763U CN 2396464 Y CN2396464 Y CN 2396464Y
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- CN
- China
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- connecting link
- model
- solid geometry
- length
- spliced eye
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Abstract
The utility model discloses an inserting model, particularly a solid geometry inserting model which is composed of connecting balls and connecting rods. The radial directions of the connecting balls are distributed with inserting holes, and the hole diameters of the inserting holes are tightly matched with the outside diameters of the connecting rods. The utility model has the characteristics of light weight, small size, low cost, convenient carryover, convenient operation, and fast combination of various visual models in solid geometry teaching. The utility model can help students quickly form space concepts, and is suitable for classroom demonstration as a teaching aid or for students to carry out self-study.
Description
The utility model relates to a kind of grafting model, especially relates to a kind of solid geometry grafting model.
At present, the teaching aid that uses in the solid geometry teaching mostly is each solid a model, not only cost height, purposes single, carry inconvenience, and can't form whole models of solid geometry; Also by solid geometry teaching aid adopts the variation of parts such as line, bar, plate, frame, circle to form solid geometric pattern, but complex structure, change loaded down with trivial details, carry inconvenience, in teaching is used, limited to.
The purpose of this utility model is to overcome the defective of existing solid geometry teaching aid, a kind of novel solid geometry plug-in unit is provided, make its only by connect ball, connecting link is formed, have in light weight, volume is little, cost is low, easy to carry, easy to use, characteristics that the energy Rapid Combination becomes the various visual models of solid geometry.
The purpose of this utility model is realized by following technical scheme.
This solid geometry plug-in unit is made up of resilient connection ball 7 and connecting link 1,2,3,4,5,6, and described connection sphere diameter is distributed with spliced eye 8 to direction, and the external diameter wringing fit of the aperture of spliced eye and connecting link.
The diameter of above-mentioned spliced eye 8 is less than connecting link diameter 0.5-1mm; And two spliced eye center line angles are not less than 30 °.
The diameter of above-mentioned connection ball 7 is not less than 2 times of spliced eye 8 degree of depth with spliced eye 8 diameters
Times sum.
Length L with connecting link 1 is a benchmark, and then the length of connecting link 2 is
The length of connecting link 3 is
The length of connecting link 4 is
The length of connecting link 5 is
, connecting link 6 arc length be
And connecting link 1 is at least 6, and connecting link 2 is at least 4, and connecting link 3 is at least 1, and connecting link 4 is at least 3, and connecting link 5 is at least 1, and connecting link 6 is at least 8.
Because this solid geometry plug-in unit is to adopt connecting link to insert the connection ball to form various geometric models, and is therefore very easy to use, can help the student to set up concept of space fast; And be easy to carry after the dismounting, both be suitable as the teaching aid demonstration, also be fit to students self study.One-tenth molecular model also capable of being combined or dna molecular model.In addition, also can be used as a kind of toy that inspires children's intelligence, or bring into play that individual imagination pegs graft that various models are furnished in the parlor, study or office etc.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the square geometric model that is combined into;
Fig. 2 is the positive tetrahedron geometric model that is combined into;
Fig. 3 is the spheroid geometric model that is combined into;
Fig. 4 is for connecting the spherical structure cut-open view.
See also Fig. 4, the radial direction that connects ball 7 is distributed with spliced eye 8, and its distributing position is so that Rapid Combination becomes various geometric models to determine, but will guarantee that the angle of two spliced eye center line minimums is not less than 30 °.In the present embodiment, spliced eye quantity is designed to 21.The diameter of all spliced eyes should be less than connecting link diameter 0.5-1mm, and elasticity is suitable when pegging graft with connecting link with assurance, is convenient to dismounting, and combination back difficult drop-off.
The diameter that connects ball 7 is not less than 2 times of the spliced eye degree of depth with the spliced eye diameter
Times sum.For guaranteeing to be combined into model basic, commonly used in the solid geometry teaching, the minimum number that connects ball in the present embodiment is got 21.The material that connects ball is the moderate PVC plastics of hardness.
Fig. 1, Fig. 2, Fig. 3 have provided the synoptic diagram of three basic stereoscopic models that are combined into, i.e. square, positive tetrahedron, spheroid.The length of supposing connecting link 1 is L, and then the length of connecting link 2 is
The length of connecting link 3 is
The length of connecting link 4 is
The length of connecting link 5 is
Connecting link 6 is one section bow, and its radius is
Arc length is
For guaranteeing to be combined into model common in other solid geometry teaching, the quantity of each connecting link is taken as in the present embodiment: connecting link 1 is 18, and connecting link 2 is 16, and connecting link 3 is 1, and connecting link 4 is 3, and connecting link 5 is 3, and connecting link 6 is 12.
The size of connection ball, connecting link, quantity can be combined into various models common in the solid geometry teaching as satisfying above-mentioned requirements, just exemplify no longer one by one here.
Claims (4)
1. solid geometry plug-in unit is characterized in that this plug-in unit is made up of resilient connection ball (7) and connecting link (1), (2), (3), (4), (5), (6); Described connection sphere diameter is distributed with spliced eye (8) to direction, and the aperture of spliced eye and connecting link external diameter wringing fit.
2. a kind of solid geometry plug-in unit according to claim 1, the diameter that it is characterized in that described spliced eye (8) is less than connecting link diameter 0.5-1mm; And two spliced eye center line angles are not less than 30 °.
3. a kind of solid geometry plug-in unit according to claim 1, the diameter that it is characterized in that described connection ball (7) are not less than 2 times of spliced eye (8) degree of depth with spliced eye (8) diameter
Times sum.
4. a kind of solid geometry plug-in unit according to claim 1 is characterized in that the length L with connecting link (1) is a benchmark, and then the length of connecting link (2) is
The length of connecting link (3) is
The length of connecting link (4) is
The length of connecting link (5) is
The arc length of connecting link (6) is
And connecting link (1) is at least 6, and connecting link (2) is at least 4, and connecting link (3) is at least 1, and connecting link (4) is at least 3, and connecting link (5) is at least 1, and connecting link (6) is at least 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99253763 CN2396464Y (en) | 1999-11-15 | 1999-11-15 | Solid geometry inserting parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99253763 CN2396464Y (en) | 1999-11-15 | 1999-11-15 | Solid geometry inserting parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2396464Y true CN2396464Y (en) | 2000-09-13 |
Family
ID=34037586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99253763 Expired - Fee Related CN2396464Y (en) | 1999-11-15 | 1999-11-15 | Solid geometry inserting parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2396464Y (en) |
-
1999
- 1999-11-15 CN CN 99253763 patent/CN2396464Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |