CN204414950U - A kind of parallelogram folding chi - Google Patents
A kind of parallelogram folding chi Download PDFInfo
- Publication number
- CN204414950U CN204414950U CN201420856472.2U CN201420856472U CN204414950U CN 204414950 U CN204414950 U CN 204414950U CN 201420856472 U CN201420856472 U CN 201420856472U CN 204414950 U CN204414950 U CN 204414950U
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- China
- Prior art keywords
- ruler
- connecting rod
- parallelogram
- right connecting
- length
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Abstract
The utility model discloses a kind of parallelogram folding chi, belong to mathematics chi tool field, mainly solve and parallelogram content is taught in current classroom be not easy to the problem that student understands drawing process and principle, upper ruler is string configuration, its cross section is rectangle, upper ruler side surface upper part is provided with high scale along its length, upper ruler side bottom is provided with two studs along its length, described stud and upper ruler are integral type structure, right connecting rod two ends are provided with through hole, right connecting rod realizes coordinating with the bolt structure of upper ruler and lower ruler by the through hole at two ends respectively, tightening nut coordinates with the bolt structure of upper ruler and lower ruler respectively, upper ruler and another two ends, side of lower ruler are respectively equipped with a sucker.The utility model while showing parallelogram sturcutre and characteristic can by the frame of ruler, lower ruler, left connecting rod and right connecting rod composition draw parallelogram.
Description
Technical field
The utility model relates to a kind of parallelogram folding chi, belongs to mathematics chi tool field.
Background technology
Ruler is widely used in mathematics, and measure, the subjects such as engineering, have the chi shape gauge of precise linear seamed edge.Ruler is used for carrying out straight line degree measurement and the measurement of planeness with light gap method, also can together with gauge block, for check length size.For utilizing the situation of light gap method examining workpieces boss height.Before measurement, form two packet sizes with gauge block, one group of maximum limit of size equaling boss height dimensional tolerance, another group equals the minimum limit of size.If with the former inspection, ruler seamed edge and boss surface contact position printing opacity; And when checking with the latter, ruler seamed edge and contact position, gauge block measurement face printing opacity, then represent boss height size qualification.Rolling bearing steel making commonly used by ruler.Ruler also have person be between chi, be a kind of very conventional measuring length instrument, this stationery is very general, and almost every pupil all staff one, are generally used for measuring shorter distance or drawing straight line.Material is variant, has iron, wood, plastic cement etc., has certain degree of hardness, otherwise be tape.Minimum scale is generally 1 millimeter.Scale unit is often centimetre.Length, the commonly meter ruler of 1 meter and the short chi of 15 centimetres, but do not have actual restrictions, so length is by one centimetre to four or five meters have.Graduation mark has two kinds: top (ruler is at the very start) and non-top (still there is one section of blank in graduation mark front, about 1 centimetre).Worst error, no more than 0.2 millimeter usually.Close the worst error of specification: the worst error that length is less than 30 centimetres is ± 0.1 millimeter, and the worst error that length is 30 centimetres to 50 centimetres is ± 0.15 millimeter, and the worst error that length is 50 centimetres to 1 meter is ± 0.2 millimeter.Parallelogram is a part very important in current mathematics geometry, and quadrangle is in fundamental position in geometry, and the degree of understanding of student is related to study and the understanding of follow-up geometry content to a great extent.
Usually just can carry out single line and draw one by one by common ruler when current classroom being taught parallelogram content, this process operation is loaded down with trivial details and easily draw deflection influence outward appearance, and being also not easy to student understands drawing process and principle simultaneously.
Utility model content
The utility model just can carry out single line and draws one by one by common ruler usually for when current classroom being taught parallelogram content, this process operation is loaded down with trivial details and easily draw deflection influence outward appearance, also be not easy to the problem that student understands drawing process and principle simultaneously, devise a kind of parallelogram folding chi.
The technical scheme in the invention for solving the technical problem is:
This a kind of parallelogram folding chi, its structure comprises: upper ruler, high scale, tightening nut, right connecting rod, right handle, lower ruler, lower scale, left connecting rod, left handle, sucker, upper ruler is string configuration, its cross section is rectangle, upper ruler side surface upper part is provided with high scale along its length, upper ruler side bottom is provided with two studs along its length, described stud and upper ruler are integral type structure, lower ruler is string configuration, its cross section is rectangle, lower ruler side bottom is provided with lower scale along its length, lower ruler side top is provided with two studs along its length, described stud and lower ruler are integral type structure, right connecting rod two ends are provided with through hole, right connecting rod realizes coordinating with the bolt structure of upper ruler and lower ruler by the through hole at two ends respectively, tightening nut coordinates with the bolt structure of upper ruler and lower ruler respectively, left connecting rod two ends are provided with through hole, left connecting rod realizes coordinating with the bolt structure of upper ruler and lower ruler by the through hole at two ends respectively, upper ruler and another two ends, side of lower ruler are respectively equipped with a sucker.
Described high scale and lower scale lay respectively on ruler and lower ruler side.
Described left handle is arranged on left connecting rod center side position, and left handle root and left connecting rod side are integral type structure, and right handle is arranged on right connecting rod center side position, and right handle root and right connecting rod side are integral type structure.
The through-hole aperture at described left connecting rod and right connecting rod two ends is greater than the bolt structure external diameter of ruler and lower ruler side, and the length of left connecting rod and right connecting rod is equal.
Described sucker root and upper ruler and lower ruler are integral type structure.
Compared with prior art, the beneficial effects of the utility model are:
1. the utility model is novel unique, required parallelogram is put into as required in use procedure, be adsorbed on blackboard by sucker structure, while showing parallelogram sturcutre and characteristic can by the frame of ruler, lower ruler, left connecting rod and right connecting rod composition draw parallelogram.
2. the utility model structure is simple, and easy to make, material is cheap, and cost of manufacture is low, and application is wide.
Accompanying drawing explanation
Fig. 1 is the utility model overall structure figure.
Fig. 2 is the utility model structure figure.
Fig. 3 is the utility model side view.
In figure: ruler, 2 high scales, 3 tightening nut, 4 right connecting rods, 5 right handles, 6 times rulers, 7 times scales, 8 left connecting rods, 9 left handles, 10 suckers on 1.
Detailed description of the invention
As shown in Figure 1, 2, 3: a kind of parallelogram folding chi, its structure comprises: upper ruler 1, high scale 2, tightening nut 3, right connecting rod 4, right handle 5, lower ruler 6, lower scale 7, left connecting rod 8, left handle 9, sucker 10, upper ruler 1 is string configuration, its cross section is rectangle, upper ruler 1 side surface upper part is provided with high scale 2 along its length, upper ruler 1 side bottom is provided with two studs along its length, described stud and upper ruler 1 are integral type structure, lower ruler 6 is string configuration, its cross section is rectangle, lower ruler 6 side bottom is provided with lower scale 7 along its length, lower ruler 6 side top is provided with two studs along its length, described stud and lower ruler 6 are integral type structure, right connecting rod 4 two ends are provided with through hole, right connecting rod 4 realizes coordinating with the bolt structure of upper ruler 1 and lower ruler 6 by the through hole at two ends respectively, tightening nut 3 coordinates with the bolt structure of upper ruler 1 and lower ruler 6 respectively, left connecting rod 8 two ends are provided with through hole, left connecting rod 8 realizes coordinating with the bolt structure of upper ruler 1 and lower ruler 6 by the through hole at two ends respectively, upper ruler 1 and another two ends, side of lower ruler 6 are respectively equipped with a sucker 10, described high scale 2 and lower scale 7 lay respectively on ruler 1 and lower ruler 6 side, described left handle 9 is arranged on left connecting rod 8 center side position, and left handle 9 root and left connecting rod 8 side are integral type structure, and right handle 5 is arranged on right connecting rod 4 center side position, and right handle 5 root and right connecting rod 4 side are integral type structure, the through-hole aperture at described left connecting rod 8 and right connecting rod 4 two ends is greater than the bolt structure external diameter of ruler 1 and lower ruler 6 side, and the length of left connecting rod 8 and right connecting rod 4 is equal, described sucker 10 root and upper ruler 1 and lower ruler 6 are integral type structure.
A kind of parallelogram folding chi described by the present embodiment, during use, both hands hold left handle 9 and right handle 5 respectively, ruler 1 and lower ruler 6 to required form in adjustment, now left connecting rod 8, right connecting rod 4, upper ruler 1 and lower ruler 6 form parallelogram, hand-held whole device by the sucker 10 at upper ruler 1 and two ends, lower ruler 6 bottom surface by its overall absorption with on blackboard panel, while showing parallelogram sturcutre and characteristic can by the frame of ruler 1, lower ruler 6, left connecting rod 8 and right connecting rod 4 composition draw parallelogram.
The utility model structure is simple, and easy to make, material is cheap, and cost of manufacture is low, and application is wide.
The above, be only detailed description of the invention of the present utility model, and those of ordinary skill in the art are in the scope that the utility model discloses, and the change that can expect easily, within the protection domain that all should be encompassed in utility model.
Claims (5)
1. a parallelogram folding chi, structure comprises: upper ruler (1), high scale (2), tightening nut (3), right connecting rod (4), right handle (5), lower ruler (6), lower scale (7), left connecting rod (8), left handle (9), sucker (10), it is characterized in that: upper ruler (1) is string configuration, its cross section is rectangle, upper ruler (1) side surface upper part is provided with high scale (2) along its length, upper ruler (1) side bottom is provided with two studs along its length, described stud and upper ruler (1) are integral type structure, lower ruler (6) is string configuration, its cross section is rectangle, lower ruler (6) side bottom is provided with lower scale (7) along its length, lower ruler (6) side top is provided with two studs along its length, described stud and lower ruler (6) are integral type structure, right connecting rod (4) two ends are provided with through hole, right connecting rod (4) realizes coordinating with the bolt structure of upper ruler (1) and lower ruler (6) by the through hole at two ends respectively, tightening nut (3) coordinates with the bolt structure of upper ruler (1) and lower ruler (6) respectively, left connecting rod (8) two ends are provided with through hole, left connecting rod (8) realizes coordinating with the bolt structure of upper ruler (1) and lower ruler (6) by the through hole at two ends respectively, upper ruler (1) and another two ends, side of lower ruler (6) are respectively equipped with a sucker (10).
2. a kind of parallelogram folding chi according to claim 1, is characterized in that: described high scale (2) and lower scale (7) lay respectively on ruler (1) and lower ruler (6) side.
3. a kind of parallelogram folding chi according to claim 1, it is characterized in that: described left handle (9) is arranged on left connecting rod (8) center side position, left handle (9) root and left connecting rod (8) side are integral type structure, right handle (5) is arranged on right connecting rod (4) center side position, and right handle (5) root and right connecting rod (4) side are integral type structure.
4. a kind of parallelogram folding chi according to claim 1, it is characterized in that: the through-hole aperture at described left connecting rod (8) and right connecting rod (4) two ends is greater than the bolt structure external diameter of ruler (1) and lower ruler (6) side, and the length of left connecting rod (8) and right connecting rod (4) is equal.
5. a kind of parallelogram folding chi according to claim 1, is characterized in that: described sucker (10) root and upper ruler (1) and lower ruler (6) are integral type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856472.2U CN204414950U (en) | 2014-12-30 | 2014-12-30 | A kind of parallelogram folding chi |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856472.2U CN204414950U (en) | 2014-12-30 | 2014-12-30 | A kind of parallelogram folding chi |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204414950U true CN204414950U (en) | 2015-06-24 |
Family
ID=53465350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420856472.2U Expired - Fee Related CN204414950U (en) | 2014-12-30 | 2014-12-30 | A kind of parallelogram folding chi |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204414950U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107757201A (en) * | 2017-10-16 | 2018-03-06 | 连雪芳 | A kind of mechanical arm type aided drawing device |
| CN111426494A (en) * | 2020-03-26 | 2020-07-17 | 山东大学 | Lifting arm rack for model test system and working method |
-
2014
- 2014-12-30 CN CN201420856472.2U patent/CN204414950U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107757201A (en) * | 2017-10-16 | 2018-03-06 | 连雪芳 | A kind of mechanical arm type aided drawing device |
| CN111426494A (en) * | 2020-03-26 | 2020-07-17 | 山东大学 | Lifting arm rack for model test system and working method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20151230 |
|
| EXPY | Termination of patent right or utility model |