A kind of apparatus for demonstrating of static electrification table tennis
Technical field
The utility model relates to a kind of apparatus for demonstrating using in science and education activity. More particularly, the utility model relates to a kind of apparatus for demonstrating of the static electrification table tennis for science and education activity.
Background technology
Static is a kind of electric charge remaining static immobilising electric charge in other words. When accumulation on certain object or when surface just formed static, electric charge is divided into two kinds of positive charge and negative electrical charges, it is positive static and negative static that electrostatic phenomenon is also divided into two kinds. In the time that being gathered on certain object, positive charge just forms positive static, in the time that being gathered on certain object, negative electrical charge just forms negative static, no matter be positive static or negative static, all can there is electric charge when static electrification object contact zero potential object (ground connection object) or have the object of potential difference during with it and shift, the daily exactly Spark Discharges of seeing. North wintry weather is dry, and human body is easily brought static, will Discharge Phenomena in the time of contact other people or metallic conductor, people has the picotement of electric shock, can see spark night, this be chemical fibre clothes with human body friction human body band on the reason of static just. We just know rubber bar and fur friction, and rubber bar is electronegative, fur positively charged.
Static cannot directly with the naked eye be seen, can only indirectly demonstrate with demonstrator the effect of generation of static electricity, explains the generation principle of static to student. But in existing teaching process, common electrostatic demonstrator is simple in structure, poor reliability, be subject to the impact of ambient humidity large, in the environment of rainy season or humidity, cannot normally use, can not directly perceived, lively demonstration go out electrostatic phenomenon, so that student gets information about the characteristic of static, the electric discharge phenomena of static, reduce the effect of giving lessons, affect teaching process.
Utility model content
The utility model, in order to overcome the defect of prior art, discloses a kind of apparatus for demonstrating of static electrification table tennis.
An object of the present utility model is, designs one simple in structure, easy to operate, intuitively, vividly demonstrates out the apparatus for demonstrating of electrostatic induction and static characteristic.
In order to realize according to these objects of the present utility model and other advantage, a kind of apparatus for demonstrating of static electrification table tennis is provided, comprising:
Table tennis, its outer surface coated with conductive film;
Two table tennis bats, it all has electric conductivity, and two rackets are oppositely arranged, and described table tennis is suspended between two rackets;
Power module, it provides electric energy for two rackets;
Time delay control module, it is for extending the make-and-break time of power module power supply, and described time delay control module input is electrically connected on power module;
High voltage package, it is for being promoted to high voltage by the low-voltage of power module, and the input of described high voltage package is electrically connected on the output of time delay control module, and the output of high voltage package is electrically connected on respectively two rackets.
Preferably, also comprise:
Switch, it is for controlling the opening and closing of time delay control module, and described switch is electrically connected on time delay control module.
Preferably, described table tennis bat is arranged on base plate by fixed strip.
Preferably, on described base plate, be provided with translucent cover, translucent cover covers two rackets, and translucent cover inner top connects silk thread one end, and the silk thread other end connects table tennis, and table tennis is suspended between two rackets.
Preferably, described fixed strip two ends are provided with stator, and fixed strip and two stator angles are 90 degree, and fixed strip and stator entirety are " Z " font.
Preferably, described fixed strip two ends are connected and fixed sheet or one bending forming.
Preferably, described table tennis bat integral plaster is combined on fixed strip, the stator of fixed strip upper end is screwed in the end of handle of table tennis bat, and it is upper that fixed strip middle part is screwed in table tennis clappers, and the stator of fixed strip lower end is screwed on base plate.
Preferably, the upper bonding conductive plate of described table tennis clappers, conductive plate is made up of metal material.
The utility model at least comprises following beneficial effect: because the table tennis of coated with conductive film hangs between the table tennis bat of two energisings, therefore under electrostatic induction effect, on the conducting film of table tennis, one end is with positive charge, the other end is with negative electrical charge, like charges repels mutually, xenogenesis electric charge attracts mutually, table tennis attracted on one of them racket, after colliding with racket, original electric charge on table tennis is neutralized, bring the electric charge identical with racket, both repel mutually, now the electric charge on table tennis and another racket are different, table tennis attracted on another racket, and so forth, table tennis swings back and forth between two rackets, until the electrical potential difference of two rackets is tending towards " 0 ", because time delay control module has extended the make-and-break time of power module power supply, therefore avoid the unexpected power on/off of whole circuit, protect circuit and electric elements, extend the charging interval of power supply to two table tennis bats, make it store enough electric weight, because the low-voltage of power module is promoted to high voltage by high voltage package, therefore can, for two table tennis bats provide higher voltage, make two table tennis bats store more electric charge, because table tennis bat is combined on fixed strip by screw table tennis bat integral plaster, handle of table tennis bat end is screwed on the stator on fixed strip top, the stator of fixed strip bottom is screwed on base plate, therefore being connected firmly of table tennis bat and fixed strip, table tennis bat can be fixed on base plate by fixed strip and stator, keeps stable for a long time, due to the upper bonding conductive plate of table tennis clappers, therefore power module is by fixed strip and screw, and electrical connection conductive plate, saves loaded down with trivial details connection, and overall structure is simple, good looking appearance, because the translucent cover of base plate covers two rackets, form the environment of sealing, therefore static demonstration reliability is high, not affected by ambient humidity, in the environment of rainy season or humidity, also can normally use.
Other advantage of the present utility model, target and feature embody the explanation of part by below, and part also will be by being understood by those skilled in the art research and practice of the present utility model.
Brief description of the drawings
Fig. 1 is each component locations graph of a relation of the apparatus for demonstrating of static electrification table tennis in embodiment of the present utility model;
Fig. 2 is the circuit diagram of the apparatus for demonstrating of static electrification table tennis in embodiment of the present utility model;
Fig. 3 is the cutaway view of table tennis in embodiment of the present utility model;
Fig. 4 is the stereogram of the apparatus for demonstrating of static electrification table tennis in embodiment of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail, to make those skilled in the art can implement according to this with reference to description word.
Should be appreciated that use herein do not allot existence or the interpolation of one or more other elements or its combination such as " having ", " comprising " and " comprising " term.
Fig. 1 to 4 shows according to a kind of way of realization of the present utility model, comprising: two table tennis bats that are oppositely arranged 1, two table tennis bats 1 all have electric conductivity, between two table tennis bats 1, hang table tennis 2, table tennis 2 outer surfaces are coated aluminium foil 3, two table tennis bats 1 are electrically connected high voltage package 4 outputs, high voltage package 4 input electrical connection time delay control module 5 outputs, time delay control module 5 input electric connection of power supply modules 6, described high voltage package 4 is for extending the make-and-break time of power module power supply, time delay control module 5 is for extending the make-and-break time of power module power supply, described power module 6 provides 12V voltage for two rackets, described time delay control module 5 is electrically connected switch 7, described switch 7 is for controlling the opening and closing of time delay control module 5. under electrostatic induction effect, on the conducting film of table tennis, one end is with positive charge, the other end is with negative electrical charge, like charges repels mutually, xenogenesis electric charge attracts mutually, table tennis attracted on one of them racket, after colliding with racket, the original electric charge on table tennis is neutralized, and brings the electric charge identical with racket, both repel mutually, now the electric charge on table tennis and another racket are different, and table tennis attracted on another racket, and so forth, table tennis swings back and forth between two rackets, until the electrical potential difference of two rackets is tending towards " 0 ".
Table tennis bat 1 all has electric conductivity, and two rackets are oppositely arranged; Table tennis 2 moves back and forth between two rackets; Aluminium foil 3 forms closure casing, on it with electric charge; High voltage package 4 is for being promoted to high voltage by the low-voltage of power module; Time delay control module 5 is for extending the make-and-break time of power module power supply; Power module 6 provides electric energy for two rackets.
In this technical scheme, open switch, the table tennis of the coated with conductive film of power module hangs between the table tennis bat of two energisings, under electrostatic induction effect, on the conducting film of table tennis, one end is with positive charge, the other end is with negative electrical charge, like charges repels mutually, xenogenesis electric charge attracts mutually, table tennis attracted on one of them racket, after colliding with racket, original electric charge on table tennis is neutralized, bring the electric charge identical with racket, both repel mutually, now the electric charge on table tennis and another racket are different, table tennis attracted on another racket, and so forth, table tennis swings back and forth between two rackets, until the electrical potential difference of two rackets is tending towards " 0 ".
In another kind of example, described table tennis bat 1 is combined on fixed strip 8 by screw table tennis bat 1 integral plaster, fixed strip 8 two ends form stator 9 to both sides bending 90 degree respectively, handle of table tennis bat end is screwed on the stator 9 on fixed strip 8 tops, and the stator 9 of fixed strip 8 bottoms is screwed on base plate 10. Adopt this scheme to have being connected firmly of table tennis bat and fixed strip, table tennis bat can be fixed on base plate by fixed strip and stator, keeps stable favourable part for a long time. And this mode is a kind of explanation of preferred embodiments, but is not limited to this.
In another kind of example, described table tennis bat 1 is wooden boards, bonding conductive plate 11 on table tennis bat 1, described stator 9 and screw are made by conductive material, stator 9 is electrically connected conductive plate 11 by screw, and power module 6, by fixed strip 9 and screw, is electrically connected conductive plate 11. Adopt this scheme to have and save loaded down with trivial details connection, overall structure is simple, the favourable part of good looking appearance. And this mode is a kind of explanation of preferred embodiments, but is not limited to this.
A kind of implementation that table tennis in such scheme is suspended between two rackets is: described table tennis 2 connects one end of silk thread 12, the other end is connected to the top in translucent cover 13, translucent cover 13 covers two rackets and is fixed on base plate 10, forms the environment of sealing. Adopting this scheme to have table tennis can freely swing between two rackets, and the environment of sealing makes static demonstration reliability high, not affected by ambient humidity, the favourable part that also can normally use in the environment of rainy season or humidity.
In another kind of example, described base plate 10 is fixed on exhibition booth 14, and described exhibition booth 14 covers on cabinet 15. Adopt this scheme to there is whole device and be convenient to install and carrying, greatly improved the favourable part of demonstration and promotion effect. And this mode is a kind of explanation of preferred embodiments, but is not limited to this.
As mentioned above, according to the utility model, because the table tennis of coated with conductive film hangs between the table tennis bat of two energisings, therefore under electrostatic induction effect, on the conducting film of table tennis, one end is with positive charge, the other end is with negative electrical charge, like charges repels mutually, xenogenesis electric charge attracts mutually, table tennis attracted on one of them racket, after colliding with racket, original electric charge on table tennis is neutralized, bring the electric charge identical with racket, both repel mutually, now the electric charge on table tennis and another racket are different, table tennis attracted on another racket, and so forth, table tennis swings back and forth between two rackets, until the electrical potential difference of two rackets is tending towards " 0 ", because time delay control module has extended the make-and-break time of power module power supply, therefore avoid the unexpected power on/off of whole circuit, protect circuit and electric elements, extend the charging interval of power supply to two table tennis bats, make it store enough electric weight, because the low-voltage of power module is promoted to high voltage by high voltage package, therefore can, for two table tennis bats provide higher voltage, make two table tennis bats store more electric charge, because table tennis bat is combined on fixed strip by screw table tennis bat integral plaster, handle of table tennis bat end is screwed on the stator on fixed strip top, the stator of fixed strip bottom is screwed on base plate, therefore table tennis bat is surely firm with being connected of fixed strip, table tennis bat can be fixed on base plate by fixed strip and stator, keeps stable for a long time, due to the upper bonding conductive plate of table tennis clappers, therefore power module is by fixed strip and screw, and electrical connection conductive plate, saves loaded down with trivial details connection, and overall structure is simple, good looking appearance, because the translucent cover of base plate covers two rackets, form the environment of sealing, therefore static demonstration reliability is high, not affected by ambient humidity, in the environment of rainy season or humidity, also can normally use.
Although embodiment of the present utility model is open as above, it is not restricted to listed utilization in description and embodiment. It can be applied to the various fields of the present utility model that are applicable to completely. For those skilled in the art, can easily realize other amendment. Therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend of describing.