CN2086925U - Trace writer for horizontally parabolic motion - Google Patents
Trace writer for horizontally parabolic motion Download PDFInfo
- Publication number
- CN2086925U CN2086925U CN 91212380 CN91212380U CN2086925U CN 2086925 U CN2086925 U CN 2086925U CN 91212380 CN91212380 CN 91212380 CN 91212380 U CN91212380 U CN 91212380U CN 2086925 U CN2086925 U CN 2086925U
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- CN
- China
- Prior art keywords
- mark
- level throw
- throw motion
- stays
- trace
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Abstract
The utility model provides a tracing instrument for a horizontal parabolic motion, which belongs to physical teaching aids for middle schools. The utility model is mainly composed of a chute guideway (2) for the horizontal parabolic motion of an object, a tracing board (5), an erasing handle (4), etc., wherein numerous circular socket holes (6) or hexagonal socket holes (6), etc. which are regularly arranged and are provided with ferrous powders are distributed on the tracing board (5). When a horizontal parabolic object (1) made of magnetic materials moves downwards along the chute guideway (2), the ferrous powders in the socket holes (6) which the horizontal parabolic object passing through are attracted to the surface of the tracing board, and then a trace (7) is left on a 'road' which the horizontal parabolic object passing through. The trace is the motion trace of the horizontal parabolic object.
Description
The utility model provides a kind of level throw motion to stay the mark instrument, and it belongs to general teaching aid, ownership GO9B1/00.
Before the utility model, generally be to adopt high-pressure electrostatic instrument electricity to stay mark method and manual described point to stay the mark method about the teaching of flat paraboloid movement locus in the physics lesson of middle school, the former utilizes high direct voltage discharge generation spark to burn vestige that conductive paper the stays movement locus as flat paraboloid.Its volume is big, and the cost height is fragile; And latter's on line that to be each point in the flat paraboloid motion that will be described with hand by the student couple together is as the movement locus of object, and this method is time-consuming, and is more inaccurate, is difficult for promoting.
The purpose of this utility model is to stay the mark instrument for physics teaching in secondary school provides a kind of flat paraboloid simple in structure, that be convenient to operate.It has overcome the various shortcomings of staying the mark instrument in the prior art, has formed a kind of novel physical teaching aid in conjunction with its advantage.
Below in conjunction with accompanying drawing the utility model is done more detailed explanation.
Fig. 1 stays the forward synoptic diagram of mark instrument for this level throw motion.
Fig. 2 stays the side schematic view of mark instrument for this level throw motion.
This level throw motion stays the making of mark instrument to be: the upper left corner or the upper right corner at existing J2154 teaching aid install object horizontal cast movement skewed slot guide rail (2) additional, and near staying mark plate (5). The profile of skewed slot guide rail (2) can be semicircle or half elliptic, and its section semicircular in shape or concave shape; The diameter of the semicircle of section or concave shape groove (or width) is wider 2～4 millimeters than the length of projectile (1) central part, and the radius of groove (or degree of depth) is greater than the radius of projectile (1) central part. Skewed slot guide rail (2) can ferrous metal or non-ferrous metal making. The profile of projectile (1) is that the ball bodily form or central part are cylindrical, and two is cone shape or is the ellipsoid bodily form that material is magnet.
Staying has numerous regularly arranged hole, cave (6) on the mark plate (5), its shape can be circular, square or hexagon etc., and the depth ratio of hole, cave (6) stays the thickness of mark plate (5) little 0.5～2.0 millimeter.
During assembling, iron powder is packed in the hole, cave (6).Staying mark plate (5) to cover with the thin thing of layer of transparent, again staying the mark plate to be installed on the fixed frame (3).Trace erasing handle (4) is installed in the back of staying mark plate (5).Can freely move up and down.
When flat paraboloid (1) along skewed slot guide rail (2) when moving downward, because flat paraboloid (1) is a magnet, " road " in motion upward is attracted to the surface of staying mark plate (5) with the iron powder in each hole, cave (6), so in the overall process of motion, stay one vestige (7) on the mark plate (5) staying, this vestige is the movement locus of projectile (1) overall process.Use up the trace erasing handle (4) that moves with the magnetic material making back iron powder in hole, cave (6) is attracted to the another side that stays mark plate (5), vestige disappears.
Make teaching aid with this mark instrument that stays, directly perceived, convenient.
It is circular that most preferred embodiment of the present utility model is that hole, cave (6) makes, flat paraboloid (1) to be shaped as central part cylindrical and two is a cone shape.
Claims (5)
1, a kind of level throw motion stays the mark instrument, it mainly by object level throw motion skewed slot guide rail [2], stay mark plate [5], trace erasing handle [4] and fixed frame [3] to form.It is characterized in that object level throw motion skewed slot guide rail [2] is to be contained in the upper left corner (or upper right corner) of staying the mark instrument, its profile can be semicircle or half elliptic, stay the numerous regularly arranged circle or the hole, cave [6] of square or sexangle etc. are arranged on the mark plate [5], trace erasing handle [4] is installed in the back of staying mark plate [5], and it can move up and down.
2, level throw motion according to claim 1 stays the mark instrument, it is characterized in that the section semicircular in shape or the concave shape of object level throw motion skewed slot guide rail (2).
3, level throw motion according to claim 1 and 2 stays the mark instrument, the diameter (or width) of semicircle (or concave shape) groove that it is characterized in that object level throw motion skewed slot guide rail (2) is wideer 2～4 millimeters than the length of flat projectile (1) central part, and the radius (or degree of depth) of semicircle (or concave shape) groove is greater than the radius of projectile (1) central part.
4, stay the mark instrument according to the described level throw motion of claim (1), it is characterized in that staying the depth ratio in the hole, cave (6) on the mark plate (5) to stay the thickness of mark plate (5) little 0.5～2.0 millimeter.
5, level throw motion according to claim 1 stays the mark instrument, and the profile that it is characterized in that flat paraboloid (1) is that spheroidal or central part are the cylinder bodily form, and two is cone shape or is the ellipsoid bodily form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91212380 CN2086925U (en) | 1991-03-18 | 1991-03-18 | Trace writer for horizontally parabolic motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91212380 CN2086925U (en) | 1991-03-18 | 1991-03-18 | Trace writer for horizontally parabolic motion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2086925U true CN2086925U (en) | 1991-10-16 |
Family
ID=4920912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91212380 Withdrawn CN2086925U (en) | 1991-03-18 | 1991-03-18 | Trace writer for horizontally parabolic motion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2086925U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143275A (en) * | 2014-08-21 | 2014-11-12 | 韩智 | Experiment teaching aid for motion direction changing under stress |
| CN105719538A (en) * | 2016-04-27 | 2016-06-29 | 王星竹 | Momentum conservation verification device based on magnetic powder display |
| CN105741649A (en) * | 2016-05-13 | 2016-07-06 | 王星竹 | Momentum conservation verification device with baseboard |
-
1991
- 1991-03-18 CN CN 91212380 patent/CN2086925U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143275A (en) * | 2014-08-21 | 2014-11-12 | 韩智 | Experiment teaching aid for motion direction changing under stress |
| CN105719538A (en) * | 2016-04-27 | 2016-06-29 | 王星竹 | Momentum conservation verification device based on magnetic powder display |
| CN105741649A (en) * | 2016-05-13 | 2016-07-06 | 王星竹 | Momentum conservation verification device with baseboard |
| CN105741649B (en) * | 2016-05-13 | 2018-11-06 | 王星竹 | A kind of conservation of momentum verification device with baseboard |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| 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 |