CN202033936U - Conductive testing instrument - Google Patents
Conductive testing instrument Download PDFInfo
- Publication number
- CN202033936U CN202033936U CN2011201233208U CN201120123320U CN202033936U CN 202033936 U CN202033936 U CN 202033936U CN 2011201233208 U CN2011201233208 U CN 2011201233208U CN 201120123320 U CN201120123320 U CN 201120123320U CN 202033936 U CN202033936 U CN 202033936U
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- CN
- China
- Prior art keywords
- emitting diode
- shell
- test instrument
- light emitting
- metal probe
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- 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 discloses a conductive testing instrument, which comprises a shell and an open circuit, wherein the open circuit consists of a pair of metal probes (2), a direct-current power supply (3), a light-emitting diode (4) and a connecting lead; the metal probes (2) are positioned at the two ends of the open circuit respectively; probe heads of the metal probes (2) protrude on the shell; the direct-current power supply (3) and the light-emitting diode (4) are connected in series to the open circuit; the metal probes (2), the direct-current power supply (3) and the light-emitting diode (4) are connected with one another through leads; the direct-current power supply (3), the light-emitting diode (4) and the connecting lead are positioned in the shell; and the shell is transparent, and is provided with a cover (5) which can be used for covering the metal probes (2). The conductive testing instrument is a liquid-solid dual-purpose conductive testing instrument.
Description
Technical field
The utility model relates to the science and education Instrument technology field, is specifically related to a kind of teaching conductive test instrument.
Background technology
In the teaching of the Science Curriculum in primary school and junior middle school, many experiments of whether conducting electricity about detection material (metal, nonmetal, compound and solution) are arranged.Used conductive test instrument is generally single liquid conduction tester or solid conduction tester at present, and school must buy these two kinds of conductive test instrument simultaneously could satisfy all experiment needs, and this has increased instruction cost to school virtually.
The conductive test instrument of prior art mainly is made up of open-circuit and shell, open-circuit contains a light emitting diode, the open circuit place is connected with two probes, material with the detection of probe contact need, if this material conducts electricity, open-circuit will become closed circuit so, and light emitting diode lamp will be light.In addition, the conductive test instrument of present prior art, its shell is opaque, and the circuit structure of housings can not be in sight, and the pupil and the junior school student that also are not completed into as abstract thinking, especially pupil, when they experimentize with such conductive test instrument,, just can not understand the principle of substance conductance well owing to can not see the circuit structure of housings intuitively, it is not deep to learn impression, does not reach good teaching effective.
The utility model content
Technical problem to be solved in the utility model is at above the deficiencies in the prior art, provides a kind of liquid and solid dual-purpose conductive test instrument.
For addressing the above problem, the utility model provides a kind of conductive test instrument, comprise shell and open-circuit, described open-circuit is made up of pair of metal probe, direct supply, light emitting diode and connection lead, wherein the pair of metal probe lays respectively at the two ends of open-circuit, direct supply, light emitting diode are series in the open-circuit, connect with lead between metal probe, direct supply and the light emitting diode, and the probe of metal probe protrudes in the shell setting.
After adopting above structure, the utility model compared with prior art, have the following advantages: the utility model conductive test instrument comprises shell and open-circuit, open-circuit is by the pair of metal probe, direct supply, light emitting diode and connection lead are formed, the probe of metal probe protrudes in the shell setting, if test substance is a liquid like this, whether two of metal probe probes are inserted liquid just can detect this liquid and conduct electricity, if test substance is a solid, two probes of metal probe are touched solid surface just can detect this solid and whether conduct electricity, so the utility model conductive test instrument is the conductive test instrument that liquid and solid can detect.When whether conducting electricity experiment with this conductive test instrument tracer liquid, as long as in the plate of well cave, splash into the relevant solution about 1ml, just can do related experiment, join the method whether carbon-point or metal electrode tracer liquid conduct electricity with cup compared to existing technology, saved 95% solution, effectively realize the low consumption of solution, embodied environmental protection concept.
Be equipped with the lid that metal probe can be hidden on the described shell.The standby lid covers metal probe when no, can protect metal probe, prolongs the serviceable life of metal probe; And can prevent that probe contacts with the conductor material no the time, make the direct supply loss.
Described shell is made up of upper casing and lower casing, can be fastened between upper casing and the lower casing.Described metal probe is installed between the upper casing and lower casing of shell, described direct supply, light emitting diode and be connected lead and be positioned at shell.Removable the fixing of shell that upper casing and lower casing are formed makes things convenient for the assembling and the maintenance of conductive test instrument.
Described upper casing and lower casing are transparent.Upper casing and lower casing are transparent, the student not only can see through shell and see whether the light emitting diode of housings is bright, but also can see the circuit structure of housings, see intuitively how entire circuit connects, this helps them to understand the substance conductance relevant knowledge better, study is got up with deep impression, reaches good teaching effective.
As preferably, described direct supply is 6 joint 1.5V button cells.6 joint 1.5V button cells total electric weight are 9V voltage, make this conductive test instrument in survey solution contained electrolytical amount seldom, pass through under the faint situation of electric current, also can drive light emitting diode and carry out luminously, effectively strengthen the sensitivity of this conductive test instrument.
As preferably, described light emitting diode is color shwoot optical diode or dodges red light-emitting diode slowly.Color shwoot optical diode or to dodge red light-emitting diode slowly all be the flash light emission diode, these two kinds of light emitting diodes are instantaneous energising flashes of light, can carry out luminous with the DC voltage of 9V, and the flash light emission diode helps to attract middle school student and pupil's notice, make its thought concentrate on classroom instruction, thereby reach good teaching efficiency.
Description of drawings
Shown in Figure 1 is the structural representation of the utility model conductive test instrument;
That shown in Figure 2 is the open-circuit figure of the utility model conductive test instrument.
Wherein: 1-1, upper casing; 1-2, lower casing; 2, metal probe; 3, direct supply; 4, light emitting diode; 5, lid.
Embodiment
Below in conjunction with accompanying drawing the utility model embodiment is described in further detail.
As shown in the figure, the utility model conductive test instrument comprises shell and open-circuit.Open-circuit is made up of pair of metal probe 2, direct supply 3, light emitting diode 4 and connection lead, wherein pair of metal probe 2 lays respectively at the two ends of open-circuit, direct supply 3, light emitting diode 4 are series in the open-circuit, connect with lead between metal probe 2, direct supply 3 and the light emitting diode 4, open-circuit figure as shown in Figure 2.
Shell is a transparent plastic material, is made up of the upper casing 1-1 and the lower casing 1-2 of integrated injection molding, fastens by preset holes and screw between upper casing 1-1 and the lower casing 1-2 to be fixed together.Metal probe 2 is installed between the upper casing 1-1 and lower casing 1-2 of shell, and the distance of two metal probes is 12mm.Direct supply 3, light emitting diode 4 and be connected lead and be positioned at shell, direct supply 3 adopts 6 joint 1.5V button cells.Be equipped with the lid 5 that metal probe 2 can be hidden on the shell.Light emitting diode 4 is color shwoot optical diode, can certainly be for dodging red light-emitting diode slowly.
Above embodiment is to explanation of the present utility model and further explains, rather than to restriction of the present utility model, any modification of being done in interest field of the present utility model all falls into protection domain of the present utility model.
Claims (6)
1. conductive test instrument, comprise shell and open-circuit, it is characterized in that: described open-circuit is made up of pair of metal probe (2), direct supply (3), light emitting diode (4) and connection lead, wherein pair of metal probe (2) lays respectively at the two ends of open-circuit, direct supply (3), light emitting diode (4) are series in the open-circuit, connect with lead between metal probe (2), direct supply (3) and the light emitting diode (4), the probe of metal probe (2) protrudes in the shell setting.
2. conductive test instrument according to claim 1 is characterized in that: be equipped with the lid (5) that metal probe (2) can be hidden on the described shell.
3. conductive test instrument according to claim 1 is characterized in that: described shell is made up of upper casing (1-1) and lower casing (1-2), can be fastened between upper casing (1-1) and the lower casing (1-2); Described metal probe (2) is installed between the upper casing (1-1) and lower casing (1-2) of shell, described direct supply (3), light emitting diode (4) and be connected lead and be positioned at shell.
4. conductive test instrument according to claim 3 is characterized in that: described upper casing (1-1) and lower casing (1-2) are for transparent.
5. conductive test instrument according to claim 1 is characterized in that: described direct supply (3) is 6 joint 1.5V button cells.
6. conductive test instrument according to claim 1 is characterized in that: described light emitting diode (4) is for color shwoot optical diode or dodge red light-emitting diode slowly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201233208U CN202033936U (en) | 2011-04-13 | 2011-04-13 | Conductive testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201233208U CN202033936U (en) | 2011-04-13 | 2011-04-13 | Conductive testing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202033936U true CN202033936U (en) | 2011-11-09 |
Family
ID=44896225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201233208U Expired - Fee Related CN202033936U (en) | 2011-04-13 | 2011-04-13 | Conductive testing instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202033936U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789729A (en) * | 2012-07-23 | 2012-11-21 | 黑龙江大学 | Experimental circuit with connecting indicating circuit |
| CN105513473A (en) * | 2016-02-19 | 2016-04-20 | 德州学院 | Multifunctional electrotechnics and circuit experiment box |
| CN105606927A (en) * | 2015-12-18 | 2016-05-25 | 天津东方威尔科技有限公司 | Electric appliance element |
-
2011
- 2011-04-13 CN CN2011201233208U patent/CN202033936U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789729A (en) * | 2012-07-23 | 2012-11-21 | 黑龙江大学 | Experimental circuit with connecting indicating circuit |
| CN102789729B (en) * | 2012-07-23 | 2014-10-29 | 黑龙江大学 | Experimental circuit with connecting indicating circuit |
| CN105606927A (en) * | 2015-12-18 | 2016-05-25 | 天津东方威尔科技有限公司 | Electric appliance element |
| CN105513473A (en) * | 2016-02-19 | 2016-04-20 | 德州学院 | Multifunctional electrotechnics and circuit experiment box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111109 Termination date: 20160413 |