CN204029221U - Three-in-one rotary recoil demonstration teaching aid - Google Patents
Three-in-one rotary recoil demonstration teaching aid Download PDFInfo
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- CN204029221U CN204029221U CN201420321727.5U CN201420321727U CN204029221U CN 204029221 U CN204029221 U CN 204029221U CN 201420321727 U CN201420321727 U CN 201420321727U CN 204029221 U CN204029221 U CN 204029221U
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- recoil
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- mouthfuls
- demonstration teaching
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Abstract
The utility model discloses a kind of the purpose of this utility model and be to provide a kind of three-in-one rotary recoil demonstration teaching aid at this, it is characterized in that: this demonstration teaching aid is outside is transparent shell; The inside of transparent shell is fixed with gas-solid recoil demonstrating instrument, liquid-solid recoil demonstrating instrument, Gu be fixed with-recoil demonstrating instrument of transparent shell top.This teaching aid is by demonstration liquid, gas, and the phenomenon of recoil is illustrated in the interaction between solid and another solid.Demonstrative process is obviously directly perceived, and the duration is long, convenient teaching.The making of teaching aid is simple, and material all picks up from the thing in life, makes a silk purse out of a sow's ear; A set of practicality, convenient, the little teaching aid of environmental protection.
Description
Technical field
The utility model relates to a kind of teaching aid, is specifically a kind of three-in-one rotary recoil demonstration teaching aid.
Background technology
At present, middle school teaching apparatus kind is a lot, but function singlenesses all, just for needing separately the content of showing to design.In junior middle school physics teaching, make by experiment the content of students gas backwash, it is a very important content in physics teaching, yet be again one of the important of physics lesson and the course of beyonding one's depth, student and teacher are in the urgent need to teaching aid targetedly, existing teaching demonstration mode effect is not obvious again, and be difficult for to observe, and is difficult to make student's proof procedure of gas backwash that undergoes, thereby to teaching, bring certain difficulty, even have influence on student performance and learning interest; Therefore need to be improved.The time of using the recoil demonstration of rectilinear motion mode can observe is very short, is not easy to impart knowledge to students, and the phenomenon of the demonstration of use rotary movement is obvious and the duration is long, can also be for explaining the principle of the rotary sprinkling instrument of life.The demonstrator of this rotating serial passes through demonstration liquid, gas, and phenomenon and the concept of recoil set forth in the interaction between solid and another solid.
Utility model content
The purpose of this utility model is to provide a kind of three-in-one rotary recoil demonstration teaching aid at this; Simple in structure, workable, can demonstrate intuitively the process of gas backwash, be both convenient to teacher and completed quickly teaching task, improved again interest and the manipulative ability of Students ' Learning, very helpful to cultivating student's the ability of analysis and solve problem.
The utility model is achieved in that a kind of three-in-one rotary recoil demonstration teaching aid of structure, it is characterized in that: this demonstration teaching aid is outside is transparent shell; The inside of transparent shell is fixed with gas-solid recoil demonstrating instrument, liquid-solid recoil demonstrating instrument, Gu be fixed with-recoil demonstrating instrument of transparent shell top.This teaching aid is by demonstration liquid, gas, and the phenomenon of recoil is illustrated in the interaction between solid and another solid.Demonstrative process is obviously directly perceived, and the duration is long, convenient teaching.The making of teaching aid is simple, and material all picks up from the thing in life, makes a silk purse out of a sow's ear.A set of practicality, convenient, the little teaching aid of environmental protection.
According to three-in-one rotary recoil demonstration teaching aid described in the utility model, it is characterized in that: described gas-solid recoil demonstrating instrument comprises T-shaped three mouthfuls of glass tubes, Flexible sucker, clear plastic pipe, hollow rubber plug and balloon;
The gas port of balloon seals hollow rubber plug one end with bungee, and clear plastic pipe inserts the other end of hollow rubber plug; The lower port of the T-shaped three mouthfuls of glass tubes of another termination of clear plastic pipe, two other mouthful inserts Flexible sucker.
According to three-in-one rotary recoil demonstration teaching aid described in the utility model, it is characterized in that: T-shaped three mouthfuls of glass tube external diameter 6.5mm, Flexible sucker internal diameter 7mm, clear plastic bore 7mm, hollow rubber plug internal diameter 6mm.
According to three-in-one rotary recoil demonstration teaching aid described in the utility model, it is characterized in that: liquid-solid recoil demonstrating instrument comprises hollow rubber plug, plastic bottle, T-shaped three mouthfuls of glass tubes and curved shape plastic tube; Rubber plug is inserted in T-shaped three mouthfuls of glass tube lower ends, and rubber plug is inserted to plastics spout; Two curved shape plastic tubes are inserted at T-shaped three mouthfuls of glass tube two ends.
According to three-in-one rotary recoil demonstration teaching aid described in the utility model, it is characterized in that: hollow rubber plug internal diameter 6.5mm external diameter 15mm, T-shaped three mouthfuls of glass tube external diameter 6.5mm.
According to three-in-one rotary recoil demonstration teaching aid described in the utility model, it is characterized in that: Gu-Gu recoil demonstrating instrument comprises hard plastic film, base, rotation axis and ball cap; In one end of hard plastic film perforate, make ball cap by bungee, be connected to one end of hard plastic film; In the middle of described hard plastic film, make a call to a hole, by rotation axis, through hard plastic film, rotation axis is arranged on base.
According to three-in-one rotary recoil demonstration teaching aid described in utility model, it is characterized in that: the long 10cm of hard plastic film, wide is 2cm.
The utility model has the advantage of: the utility model provides a kind of three-in-one rotary recoil demonstration teaching aid at this; Simple in structure, workable, can demonstrate intuitively the process of gas backwash, be both convenient to teacher and completed quickly teaching task, improved again interest and the manipulative ability of Students ' Learning, very helpful to cultivating student's the ability of analysis and solve problem.
This teaching aid is by demonstration liquid, gas, and the phenomenon of recoil is illustrated in the interaction between solid and another solid.Demonstrative process is obviously directly perceived, and the duration is long, convenient teaching.The making of teaching aid is simple, and material all picks up from the thing in life, makes a silk purse out of a sow's ear.A set of practicality, convenient, the little teaching aid of environmental protection.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
Below in conjunction with 1 pair of the utility model of accompanying drawing, be elaborated, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of three-in-one rotary recoil demonstration teaching aid at this; This demonstration teaching aid outside is transparent shell 1; The inside of transparent shell 1 is fixed with gas-solid recoil demonstrating instrument 2, liquid-solid recoil demonstrating instrument 3, Gu be fixed with-recoil demonstrating instrument of transparent shell 1 top 4.
Described gas-solid recoil demonstrating instrument 2 comprises T-shaped three mouthfuls of glass tubes 21, Flexible sucker 22, clear plastic pipe 23, hollow rubber plug 24 and balloon 25; The gas port of balloon 25 seals hollow rubber plug 24 one end with bungee, and clear plastic pipe 23 inserts the other end of hollow rubber plug 24; The lower port of the T-shaped three mouthfuls of glass tubes 21 of clear plastic pipe 23 another termination, two other mouthful inserts Flexible sucker 22.T-shaped three mouthfuls of glass tubes, 21 external diameter 6.5mm, Flexible sucker 22 internal diameter 7mm, clear plastic pipe 23 internal diameter 7mm, hollow rubber plug 24 internal diameter 6mm.
Liquid-solid recoil demonstrating instrument 3 comprises hollow rubber plug 31, plastic bottle 32, T-shaped three mouthfuls of glass tubes 33, curved shape plastic tube 34; Rubber plug 31 is inserted in T-shaped three mouthfuls of glass tubes 33 lower ends, and rubber plug 31 is inserted to 32 mouthfuls of plastic bottles; Two curved shape plastic tubes 34 are inserted at T-shaped three mouthfuls of glass tubes 33 two ends.
Hollow rubber plug 31 internal diameter 6.5mm, external diameter 15mm, T-shaped three mouthfuls of glass tubes, 33 external diameter 6.5mm.
Gu-Gu recoil demonstrating instrument 4 comprises hard plastic film 41, base 42, rotation axis 43, ball cap 44; In one end of hard plastic film 41 perforate, make ball cap 44 by bungee 45, be connected to one end of hard plastic film 41; In the middle of described hard plastic film 41, make a call to a hole, by rotation axis 43, through hard plastic film 41, rotation axis 43 is arranged on base 42.Hard plastic film 41 specifications are long 10cm, and wide is 2cm.
Described gas-solid recoil demonstrating instrument 2 using method are as follows: (1) first pulls down being connected of glass tube and plastic pipe, in plastic pipe, inflates or blows, and makes ballooning; (2), after expanding, with hand, pinch plastic pipe middle part in case balloon gas leakage; (3) when pinching plastic pipe, glass tube is accessed in another port, temporarily do not let go; (4) pull-up fine rule, the hand that pinches plastic pipe moves on to instrument in the air and lets go; (5) observable obtains whole instrument and rotates; (6) hand is put into the mouth of pipe of Flexible sucker, can feels and be free gas blowout to go out, illustrated when air sprays toward a direction, to two of glass tube gas outlets, have the effect of power backward to cause instrument rotation, can demonstrate the generation of recoil.Principle analysis: because balloon has the trend of contraction after inflation, by the air extrusion in balloon out, air sprays from suction pipe mouth by conduit, the generation recoil of the air of ejection and gas port part, suction pipe end is motion backward just, by lever principle, is driving the rotation of whole instrument.
Described liquid-solid recoil demonstrating instrument 3 using method are as follows: (1) slings instrument with fine rule unsettled, in plastic bottle, adds water; (2), when water flows out from two mouths of pipe, whole instrument continues to rotate; (3) instrument rotate be because, in liquid motion, pipe is to negative side's motion and drive this instrument to rotate by lever principle, has demonstrated thus liquid, with solid, the phenomenon recoiling has occurred.Principle analysis: be subject to the effect of gravity, water in container is toward the low place motion of gravitional force, pass through conduit, flow out, when flowing out sebific duct, and there is recoil in the end of sebific duct, cause end to have movement tendency backward, due to lever principle, the end of sebific duct drives the even whole instrument of this whole sebific duct that motion has occurred, and forms the effect of rotating.
Described solid-Gu recoil demonstrating instrument 4 using method are as follows: (1) on bungee, round plastic plate pitch of the laps, makes it bungee finishing ball pen cover buckle later tighten.(2) after tightening, promptly ball cap (3) is let go, and observes the rotation direction that ball cap obtains heading and rigid plastic sheet.(4) ball cap because have is tightened the elastic force of bungee and the direction of shrinking towards bungee flies out, when flying out, and rigid plastic sheet counter-rotation.Principle analysis: when hand is decontroled cap, because the bungee of tightening has the trend of contraction, when having driven the motion of cap, also start to drive the motion of the end of sheet, when cap flies out, due to recoil, the end of sheet is also to motion in the other direction, by leverage, driven the rotation of monoblock sheet.
This teaching aid is by demonstration liquid, gas, and the phenomenon of recoil is illustrated in the interaction between solid and another solid.Demonstrative process is obviously directly perceived, and the duration is long, convenient teaching.The making of teaching aid is simple, and material all picks up from the thing in life, makes a silk purse out of a sow's ear.A set of practicality, convenient, the little teaching aid of environmental protection.
Above-mentioned explanation to the disclosed embodiments, makes professional and technical personnel in the field can realize or use the utility model.To the multiple modification of these embodiment, will be apparent for those skilled in the art, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (7)
1. a three-in-one rotary recoil demonstration teaching aid, is characterized in that: this demonstration teaching aid is outside is transparent shell (1); The inside of transparent shell (1) is fixed with gas-solid recoil demonstrating instrument (2), liquid-solid recoil demonstrating instrument (3), and transparent shell (1) is Gu be fixed with-recoil demonstrating instrument of top (4).
2. three-in-one rotary recoil demonstration teaching aid according to claim 1, it is characterized in that: described gas-solid recoil demonstrating instrument (2) comprises T-shaped three mouthfuls of glass tubes (21), Flexible sucker (22) clear plastic pipe (23), hollow rubber plug (24) and balloon (25);
The gas port of balloon (25) seals hollow rubber plug (24) one end with bungee, and clear plastic pipe (23) inserts the other end of hollow rubber plug (24); The lower port of the T-shaped three mouthfuls of glass tubes of another termination of clear plastic pipe (23) (21), two other mouthful inserts Flexible sucker (22).
3. three-in-one rotary recoil demonstration teaching aid according to claim 2, it is characterized in that: T-shaped three mouthfuls of glass tubes (21) external diameter 6.5mm, Flexible sucker (22) internal diameter 7mm, clear plastic pipe (23) internal diameter 7mm, hollow rubber plug (24) internal diameter 6mm.
4. three-in-one rotary recoil demonstration teaching aid according to claim 1, is characterized in that: liquid-solid recoil demonstrating instrument (3) comprises hollow rubber plug (31), plastic bottle (32), T-shaped three mouthfuls of glass tubes (33) and curved shape plastic tube (34); Rubber plug (31) is inserted in T-shaped three mouthfuls of glass tubes (33) lower end, and rubber plug (31) is inserted to plastic bottle (32) mouthful; Two curved shape plastic tubes (34) are inserted at T-shaped three mouthfuls of glass tubes (33) two ends.
5. three-in-one rotary recoil demonstration teaching aid according to claim 4, is characterized in that: hollow rubber plug (31) internal diameter 6.5mm external diameter 15mm, T-shaped three mouthfuls of glass tubes (33) external diameter 6.5mm.
6. three-in-one rotary recoil demonstration teaching aid according to claim 1, is characterized in that: Gu-Gu recoil demonstrating instrument (4) comprises hard plastic film (41), base (42), rotation axis (43) and ball cap (44); In one end perforate of hard plastic film (41), make ball cap (44) by bungee (45), be connected to one end of hard plastic film (41); In the middle of described hard plastic film (41), make a call to a hole, by rotation axis (43), through hard plastic film (41), rotation axis (43) is arranged on base (42).
7. three-in-one rotary recoil demonstration teaching aid according to claim 1, is characterized in that: the long 10cm of hard plastic film (41), wide is 2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420321727.5U CN204029221U (en) | 2014-06-17 | 2014-06-17 | Three-in-one rotary recoil demonstration teaching aid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420321727.5U CN204029221U (en) | 2014-06-17 | 2014-06-17 | Three-in-one rotary recoil demonstration teaching aid |
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| Publication Number | Publication Date |
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| CN204029221U true CN204029221U (en) | 2014-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420321727.5U Expired - Fee Related CN204029221U (en) | 2014-06-17 | 2014-06-17 | Three-in-one rotary recoil demonstration teaching aid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379262A (en) * | 2019-08-16 | 2019-10-25 | 重庆文理学院 | Physics bounce-back motion testing device |
-
2014
- 2014-06-17 CN CN201420321727.5U patent/CN204029221U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110379262A (en) * | 2019-08-16 | 2019-10-25 | 重庆文理学院 | Physics bounce-back motion testing device |
| CN110379262B (en) * | 2019-08-16 | 2021-07-06 | 重庆文理学院 | Physical recoil movement experimental device |
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| 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: 20141217 Termination date: 20150617 |
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| EXPY | Termination of patent right or utility model |