CN2784206Y - Folding ruler for triangle equation - Google Patents
Folding ruler for triangle equation Download PDFInfo
- Publication number
- CN2784206Y CN2784206Y CN 200520023932 CN200520023932U CN2784206Y CN 2784206 Y CN2784206 Y CN 2784206Y CN 200520023932 CN200520023932 CN 200520023932 CN 200520023932 U CN200520023932 U CN 200520023932U CN 2784206 Y CN2784206 Y CN 2784206Y
- Authority
- CN
- China
- Prior art keywords
- rod
- bar
- pointing
- chute
- vertical rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a folding ruler for triangle equation, which comprises a lean rod and a vertical rod which is vertically fixed on the lean rod, wherein the connecting position of the lean rod and the vertical rod is hinged with a swing rod which is provided with a slide screw. The tail end of a pointing rod is sheathed in a slide groove of the lean rod through the slide screw. Two equilong parallel rods are respectively hinged near an end on the pointing rod and one side of the slide groove. The other end of each parallel rod is respectively hinged with a line drawing rod. The position of a connecting point of the lean rod and the vertical rod is also hinged with an obtuse-angle corrector. The utility model has the advantages of reasonable design, convenient operation, accurate division and conformity with scientific principles.
Description
Technical field
The utility model relates to a kind of drawing instrument, specifically is branch folding rules such as a kind of triangle.
Background technology
For a long time, trisection is carried out with ruler and compasses in an angle is an insoluble problem always.Particularly often need carry out cutting apart of three equal parts in routine duties, and the instrument that can finish this task is difficult to see to an angle.The patent No. is 03235704 to disclose branch instrument such as a kind of angle, though partly solved this problem, still need adopt mathematics to omit Calculation Method, and is obviously accurate inadequately.
Summary of the invention
The utility model runs into the problem that needs a certain angle of trisection in order to solve in real work, providing a kind of can spend the third-class branch folding rules of cutting apart such as triangle in angle with 0～180.
The utility model is achieved through the following technical solutions: branch folding rules such as a kind of triangle, comprise rod, and an end of rod is provided with chute; The vertical rod vertical fixing is provided with chute near the tie-point place on the vertical rod on rod; In the hinge joint of the tie-point place of rod and vertical rod swing arm is arranged, be provided with sliding screw on it; Point to the bar tail end and be socketed on by sliding screw in the sliding tray of rod, the middle part of pointing to bar is provided with sliding screw, and is socketed in the chute of vertical rod, and the front portion of pointing to bar is provided with chute, and swing arm is socketed on by sliding screw and points in the bar chute; Hinge joint has two isometric parallel bars on the sensing bar, and the other end of described two parallel bars has linked the setting-out bar respectively, and the distance between 2 of two parallel bars and the hinge joint of sensing bar is isometric with the setting-out bar; Also linked the obtuse angle adjuster in rod and vertical rod tie point place, this adjuster is formed V font structure by two arms, and its drift angle is 30 °, and adjuster is by drift angle and tie point hinge joint.
During use,, then select wherein limit, the rod of branch folding rules such as triangle is alignd with a limit at angle, and rod is overlapped with the summit at angle with the tie point of vertical rod if the angle that will cut apart is an acute angle; Adjust swing arm again it is alignd with another limit at angle, point to bar simultaneously and do corresponding adjustment, after the position of waiting to point to bar is determined, adjust the setting-out bar again, and make it summit by the angle; Angle between setting-out bar and the rod is 1/3rd of the angle that will be divided.
If what will cut apart then can make its corresponding supplementary angle for the obtuse angle, then it is divided with said method, obtain corresponding supplementary angle 1/3rd, keep branch folding rule fixed in shape such as triangle, with rod and vertical rod tie point is that the center rotation makes its rod overlap with the one side at the obtuse angle that will cut apart, then one side near the setting-out bar, the right side of adjuster is overlapped with the setting-out bar, the determined angle of the another side of adjuster and rod is 1/3rd the angle at described obtuse angle.
The utility model volume is little, portably uses conveniently; Simple in structure, be easy to processing, easy to carry, simple to operate; Reasonable in design, cut apart accurately, meet the principles of science.
Description of drawings
Fig. 1 is the structural representation of branch folding rules such as angle
The specific embodiment
Branch folding rules such as a kind of triangle comprise rod 1, and an end of rod is provided with chute 2; The vertical rod 3 of vertical fixing on rod is provided with chute 4 near the tie-point place on the vertical rod; In the hinge joint of tie-point 5 places of rod and vertical rod swing arm 6 is arranged, be provided with sliding screw 7 on it; Pointing to bar 8 tail ends is socketed in the sliding tray 2 of rod 1 by sliding screw 9, the middle part of pointing to bar 8 is provided with sliding screw 10, and be socketed in the chute 4 of vertical rod 3, the front portion of pointing to bar 8 is provided with chute 11, and swing arm 6 is socketed on by sliding screw 7 and points in the bar chute 11; To have two isometric parallel bars 12,13, the other end of described two parallel bars to link setting-out bar 14, two parallel bars 12,13 respectively isometric with setting-out bar 14 with the distance of pointing between 2 that bar 8 links pointing to hinge joint on the bar; Also linked obtuse angle adjuster 15 in rod 1 with vertical rod 3 tie point places, this adjuster is formed V font structure by two arms, and its drift angle is 30 °, and adjuster is by drift angle and tie point hinge joint.
Claims (1)
1, branch folding rule such as a kind of triangle, it is characterized in that: branch folding rules such as described triangle comprise rod (1), an end of rod is provided with chute (2); Vertical rod (3) vertical fixing is provided with chute (4) near the tie-point place on the vertical rod on rod; Locating hinge joint at the tie-point (5) of rod and vertical rod has swing arm (6), is provided with sliding screw (7) on it; Pointing to bar (8) tail end is socketed in the sliding tray (2) of rod (1) by sliding screw (9), the middle part of pointing to bar (8) is provided with sliding screw (10), and be socketed in the chute (4) of vertical rod (3), the front portion of pointing to bar (8) is provided with chute (11), and swing arm (6) is socketed on by sliding screw (7) and points in the bar chute (11); Hinge joint has two isometric parallel bars (12), (13) on the bar pointing to, the other end of described two parallel bars has linked setting-out bar (14) respectively, and the distance between 2 of two parallel bars (12), (13) and sensing bar (8) hinge joint is isometric with setting-out bar (14); Also linked obtuse angle adjuster (15) in rod (1) with vertical rod (3) tie point place, this adjuster is formed V font structure by two arms, and its drift angle is 30 °, and adjuster is by drift angle and tie point (5) hinge joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520023932 CN2784206Y (en) | 2005-04-20 | 2005-04-20 | Folding ruler for triangle equation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520023932 CN2784206Y (en) | 2005-04-20 | 2005-04-20 | Folding ruler for triangle equation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2784206Y true CN2784206Y (en) | 2006-05-31 |
Family
ID=36771187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520023932 Expired - Fee Related CN2784206Y (en) | 2005-04-20 | 2005-04-20 | Folding ruler for triangle equation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2784206Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180201050A1 (en) * | 2018-02-06 | 2018-07-19 | Ronald Harvey Rosenfield | Angle trisector, as validated to perform accurately over a wide range of device settings by a novel geometric forming process; also capable of portraying finite lengths that only could be approximated by means of otherwise applying a compass and straightedge to a given length of unity; that furthermore functions as a level whose inherent geometry could be adapted for many other uses such as being incorporated into the design of a hydraulic car lift |
| CN110542357A (en) * | 2019-08-23 | 2019-12-06 | 长沙六都寨生态农业有限公司 | Polygonal extensible angle measuring folding rule and angle measuring method |
-
2005
- 2005-04-20 CN CN 200520023932 patent/CN2784206Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180201050A1 (en) * | 2018-02-06 | 2018-07-19 | Ronald Harvey Rosenfield | Angle trisector, as validated to perform accurately over a wide range of device settings by a novel geometric forming process; also capable of portraying finite lengths that only could be approximated by means of otherwise applying a compass and straightedge to a given length of unity; that furthermore functions as a level whose inherent geometry could be adapted for many other uses such as being incorporated into the design of a hydraulic car lift |
| US10994569B2 (en) * | 2018-02-06 | 2021-05-04 | Ronald Harvey Rosenfield | Angle trisector, as validated to perform accurately over a wide range of device settings by a novel geometric forming process; also capable of portraying finite lengths that only could be approximated by means of otherwise applying a compass and straightedge to a given length of unity; that furthermore functions as a level whose inherent geometry could be adapted for many other uses such as being incorporated into the design of a hydraulic car lift |
| CN110542357A (en) * | 2019-08-23 | 2019-12-06 | 长沙六都寨生态农业有限公司 | Polygonal extensible angle measuring folding rule and angle measuring method |
| CN110542357B (en) * | 2019-08-23 | 2024-04-16 | 刘建聪 | Polygonal angle-expandable measuring folding rule and angle measuring method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060531 Termination date: 20100420 |