CN214098867U

CN214098867U - A teaching aid for scientific experiment

Info

Publication number: CN214098867U
Application number: CN202022909828.2U
Authority: CN
Inventors: 李永宁; 李苏航
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-05
Filing date: 2020-12-05
Publication date: 2021-08-31
Anticipated expiration: 2030-12-05

Abstract

The utility model discloses a teaching aid for scientific experiment, the teaching aid is including the circuit part, the circuit part is including power supply unit, power unit, the control unit is including contact switch, plug-in switch, the power unit is including high power tungsten filament lamp and low-power tungsten filament lamp, and the control unit is used for controlling to establish ties or parallelly connected between high power tungsten filament lamp and the low-power tungsten filament lamp. The utility model discloses can make one set of student's staff and teacher carry out experiment operation in step, improve the dynamic and dynamic ability, it is direct-viewing according to the circuit after the experiment subject equipment moreover, the electricity reason in the experiment is abstract to be changed into the image, makes the knowledge after theory and practice combine root in student's mind, and the security is high, simple structure, and the practicality is strong.

Description

A teaching aid for scientific experiment

Technical Field

The utility model relates to a teaching aid field, in particular to a teaching aid for scientific experiments.

Background

Electricity covers all disciplines based on electricity as research foundation, the discipline foundation of the project is gradually established along with the application of telegraph and power systems at the end of 19 th century, the project is widely applied to various fields, basic electricity is used as the initial basic education discipline in technical education, and motor engineering comprises a plurality of fields, such as: electrical circuitry, electronics, electromechanics, electromagnetism, and the like, and has interrelationships with other areas of physical science.

At present, the experiment is an important mode for learning primary and secondary school electrics, most experimental devices are demonstrated by teachers, students can only passively see the experimental devices and cannot synchronously operate the experimental devices, and the experimental devices are numerous in connecting line heads, disordered and searchable, the displayed electrical principle is abstract and unintelligible, and the circuit cannot be displayed clearly to enhance the impression of students on subjects.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art's defect, provide a teaching aid for scientific experiment.

The teaching aid is including the circuit part, the circuit part is including power supply unit, power unit, the control unit is including contact switch, plug-in switch, power unit is including high power tungsten filament lamp and low-power tungsten filament lamp, and the control unit is used for controlling to establish ties or parallelly connected between high power tungsten filament lamp and the low-power tungsten filament lamp.

As a preferred technical scheme of the utility model, a serial communication port, the plug-in switch is including plug and socket, be equipped with two jacks on the socket, socket electric connection is in the circuit to cut off the circuit into the circuit that opens circuit, be equipped with two contact pins on the plug, the contact pin inserts the jack and makes the circuit form the route, still be equipped with detection lamp and two outer splicing on the plug, two outer splicing with respectively with two contact pins be connected, be equipped with the rubber sleeve on the outer splicing.

As an optimal technical scheme of the utility model, the teaching aid is still including the ammeter, the positive negative pole of ammeter connects the outer splicing of difference on the same plug respectively.

As an optimized technical scheme of the utility model, the head end of contact pin is the taper.

As the utility model discloses a preferred technical scheme, the teaching aid is still including the experimental box, and the experimental box is including last box and lower box, goes up the box and articulates with lower box, and circuit part installs on last box, installs the insulation board between circuit part and the last box.

As the utility model discloses a preferred technical scheme, the experimental box is still including the support frame, and it is fixed that the upper box body passes through the support frame support, be equipped with a plurality of plug-in switches and pincerlike ammeter in the experimental box.

As an optimized technical solution of the present invention, the power supply unit is an adjustable dc power supply.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the utility model provides an electricity combination teaching aid can make one set of student's staff and teacher carry out the experiment operation in step, improves the dynamic and dynamic ability of moving one's mind, and the circuit after assembling according to the experiment subject is direct-viewing in addition, and the electricity reason in the experiment is abstract to be changed into the image, makes the knowledge after theory and practice combine root in student's mind, and the security is high, simple structure, and the practicality is strong.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description, do not constitute a limitation of the invention, in which:

fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a top view of the present invention;

FIG. 3 is a schematic view of the structure of the plug;

FIG. 4 is a schematic view of the structure of the plug;

FIG. 5 is a schematic diagram of the structure of the experimental box;

in the figure: 1. a contact switch; 2. a plug; 3. a socket; 4. a jack; 5. inserting a pin; 6. detecting a light; 7. an outer tab; 8. a rubber sleeve; 9. an electricity meter; 10. an upper box body; 11. a lower box body; 12. an insulating plate; 13. a support frame; 14. high power tungsten filament lamps; 15. a low power tungsten lamp; 16. an adjustable DC power supply; 17. a plug-in switch 1; 18. a plug-in switch 2; 19. a plug-in switch 3.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are presented herein only to illustrate and explain the present invention, and not to limit the present invention.

Wherein like reference numerals refer to like parts throughout.

In addition, if a detailed description of the known art is not necessary to show the features of the present invention, it is omitted. It should be noted that the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

It should also be noted that, unless expressly stated or limited otherwise, the terms "disposed" and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

The circuit part comprises a power supply unit, a power unit and a control unit, wherein the control unit comprises a contact switch and a plug-in switch, the power supply unit is an adjustable direct current power supply, and in the embodiment, the power supply is a 220V direct current power supply. The power unit comprises a low electric power unit and a high electric power unit, in this embodiment, the high electric power unit is a 220V,60W high power tungsten lamp, and the low electric power unit is a 220V, 25W low power tungsten lamp. The tungsten lamp has low cost, large illumination difference under different electrical parameters and obvious effect.

The low electric power unit and the high electric power unit are controlled by the control unit to be connected in series or in parallel. The plug-in switch comprises a plug and a socket, the socket is provided with two jacks, the socket is electrically connected in a circuit and separates the circuit into an open circuit, the plug is provided with two contact pins, the contact pins are inserted into the jacks to enable the circuit to form a passage, and the head ends of the contact pins are tapered. The tapered pin is convenient for inserting into the socket.

As shown in the figure, after the pin of the plug-in switch is inserted into the socket, the plug-in switch is in an on state, in this embodiment:

when the plug-in switch 1 is in a switch-on state, only the low-power tungsten lamp is lighted to emit light;

when the plug-in switch 2 is in a switch-on state, the high-power tungsten lamp and the low-power tungsten lamp are in a series connection state, the high-power tungsten lamp and the low-power tungsten lamp are simultaneously lighted, and the brightness of the low-power tungsten lamp is stronger than that of the high-power tungsten lamp;

when the plug-in switch 3 is in the on state, only the high-power tungsten lamp emits light;

when the plug-in switch 1 and the plug-in switch 2 are in the on state, only the low-power tungsten lamp emits light;

when the plug-in switch 2 and the plug-in switch 3 are in the on state, only the high-power tungsten lamp emits light;

when the plug-in switch 1 and the plug-in switch 3 are switched on, the high-power tungsten lamp and the low-power tungsten lamp are in a parallel state, the high-power tungsten lamp and the low-power tungsten lamp emit light simultaneously, and the brightness of the high-power tungsten lamp is stronger than that of the low-power tungsten lamp;

the plug-in switch 1, the plug-in switch 2 and the plug-in switch 3 are not connected, the whole circuit is a circuit breaking circuit, and the high-power tungsten lamp and the low-power tungsten lamp do not emit light.

In this experiment, the voltage current characteristic of series-parallel circuit is reflected through the light and shade degree of tungsten filament lamp, shows more vividly directly perceived, only uses two plugs, the condition of short circuit can not appear, avoids taking place danger.

Further, still be equipped with on the plug and detect lamp and two outer splicing, when having the electric current through the socket, detect the lamp and light, two outer splicing with respectively with two contact pin connections, be equipped with the rubber sleeve on the outer splicing, the teaching aid is still including the ammeter, different outer splicing is connected respectively to the positive negative pole of ammeter. When the test is carried out, the current and voltage parameters of the plug-in switch are measured by using the ammeter, and the rubber sleeve is sleeved when the test is not needed.

The circuit is installed on the experimental box, and the experimental box is including last box and lower box, goes up the box and articulates with lower box, and circuit part installs on last box, installs the insulation board between circuit part and the last box. The experimental box is still including the support frame, and it is fixed that the upper box passes through the support frame support, and when doing the experiment, the support frame supports and lives the upper box, makes things convenient for the circuit experiment show. And a plurality of plug-in switches and pincer-shaped electric meters are arranged in the experimental box. Spare parts are arranged in the box body, and the clamp-on ammeter can test electrical parameters of the wire.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a teaching aid for scientific experiment, a serial communication port, the teaching aid is including the circuit part, the circuit part is including power supply unit, power unit, the control unit is including contact switch, plug-in switch, power unit is including high power tungsten filament lamp and low-power tungsten filament lamp, and the control unit is used for controlling to establish ties or connect in parallel between high power tungsten filament lamp and the low-power tungsten filament lamp.

2. A teaching aid for scientific experiments according to claim 1, wherein the plug-in switch comprises a plug and a socket, the socket is provided with two jacks, the socket is electrically connected in a circuit and separates the circuit into an open circuit, the plug is provided with two contact pins, the contact pins are inserted into the jacks to enable the circuit to form a passage, the plug is further provided with a detection lamp and two outer contact pieces, the two outer contact pieces are respectively connected with the two contact pins, and the outer contact pieces are further provided with rubber sleeves.

3. A teaching aid for scientific experiments according to claim 2, characterized in that the teaching aid further comprises an ammeter, and the positive and negative poles of the ammeter are respectively connected with different external connecting pieces on the same plug.

4. A teaching aid for scientific experiments according to claim 2, wherein the tip of the pin is tapered.

5. A teaching aid for scientific experiments according to claim 1, which further comprises a test box, the test box comprises an upper box body and a lower box body, the upper box body is hinged with the lower box body, the circuit part is arranged on the upper box body, and an insulating plate is arranged between the circuit part and the upper box body.

6. A teaching aid for scientific experiments according to claim 5, wherein the experimental box further comprises a support frame, the upper box body is supported and fixed by the support frame, and a plurality of plug-in switches and clamp-on electricity meters are arranged in the experimental box.

7. A teaching aid for scientific experiments according to claim 1, wherein the power supply unit is an adjustable dc power supply.