CN203102669U - Electric spark timer - Google Patents
Electric spark timer Download PDFInfo
- Publication number
- CN203102669U CN203102669U CN 201320132405 CN201320132405U CN203102669U CN 203102669 U CN203102669 U CN 203102669U CN 201320132405 CN201320132405 CN 201320132405 CN 201320132405 U CN201320132405 U CN 201320132405U CN 203102669 U CN203102669 U CN 203102669U
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- CN
- China
- Prior art keywords
- electric spark
- spark timer
- horizontal bubble
- timer
- bubble tube
- Prior art date
- 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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- Measurement Of Predetermined Time Intervals (AREA)
Abstract
The utility model relates to an electric spark timer. When the electric spark timer is used in physics teaching, an instrument can be adjusted to a completely horizontal state scientifically rather than depending on personal feeling, so that the error of a gravity acceleration testing result is minimized. The electric spark timer is structurally characterized in that two horizontal bubble tubes are glued to the upper plane of a body (1) of a commercially available electric spark timer by using superglue, wherein one of the two horizontal bubble tubes, which is completely parallel to the longitudinal axis of the body (1) is a longitudinal horizontal bubble tube (4), and the other horizontal bubble tube which is completely parallel to the transverse axis of the body (1) is a transverse horizontal bubble tube (5). When the electric spark timer is used, through observation, bubbles in the longitudinal horizontal bubble tube (4) and the transverse horizontal bubble tube (5) are adjusted to the middle of two black loop lines, and then the electric spark timer is definitely horizontal, a paper tape can be put on the instrument to carry out a gravity acceleration test, and therefore an accurate result can be obtained.
Description
Technical field:
The utility model relates to a kind of spark timer, is a kind of physics teaching experiment time keeping instrument.
Background technology:
Present spark timer, can be object of which movement situation being recorded on the special-purpose paper tape regularly, though have simple to operate, accuracy is high, good reliability, plurality of advantages such as safe in utilization, but blemish in an otherwise perfect thing is when test acceleration of gravity, it must be accurate level that instrument is laid, if there is error will occur rubbing in paper tape and the instrument motion slightly, produce bigger error, the accuracy of having measured when having influenced experiment, but in use only with the very difficult accuracy that guarantees the instrument level of operating personnel's range estimation.
Summary of the invention:
For overcoming above-mentioned shortcoming, the utility model discloses a kind of spark timer, and purpose is when using this instrument, can the instrument adjustment be arranged to complete horizontality by means of science rather than individual's sensation.
The utility model is on plane on the body of commercially available spark timer, use seccotine last two the spirit bubble pipes that bond, two spirit bubble Guan Zhongyi longitudinal axis with body be parallel fully to be vertical equity bubble pipe, another transverse axis with body complete parallel is that transverse horizontal is steeped and managed.
During use, the body of spark timer is fixed, instrument position whether level again need not be with sensation, as long as by observing, vertical equity bubble pipe and transverse horizontal are steeped bubble adjustment in the pipe all in the middle of two black astragals, instrument just must be a level, at this moment the attaching plug of power lead termination is being inserted in the supply socket that is connected on the civil power, the paper tape that two root records are used inserts from notch, one is passed through from ink powder paper disc front, and another root passes through from ink powder paper disc back, fixedly the paper tape upper end, hang up weight below the paper tape, turn on the power switch, pilot lamp lights, and unclamps the upper end paper tape, article two, paper tape will pass through notch fast, just can carry out acceleration of gravity and test.
The beneficial effects of the utility model are: when using this instrument, can the instrument adjustment be arranged to complete horizontality by means of science rather than individual's sensation, make acceleration of gravity test result error minimum.
Description of drawings:
Bottom in conjunction with the accompanying drawings.
Fig. 1 is a profile synoptic diagram of the present utility model.
Among the figure: 1. body, 2. ink powder paper disc, 3. notch, 4. vertical equity bubble pipe, 5. transverse horizontal bubble pipe, 6. power lead, 7. attaching plug, 8. power switch, 9. pilot lamp.
Embodiment:
The utility model is on plane on the body 1 of commercially available spark timer, use seccotine last two the spirit bubble pipes that bond, two spirit bubble Guan Zhongyi longitudinal axis with body 1 be parallel fully to be vertical equity bubble pipe 4, another transverse axis with body 1 complete parallel is that transverse horizontal is steeped and managed 5.
During use, the body 1 of spark timer is fixed, instrument position whether level again need not be with sensation, as long as by observing, with the bubble adjustment in vertical equity bubble pipe 4 and the transverse horizontal bubble pipe 5 all in the middle of two black astragals, instrument just must be a level, at this moment the attaching plug 7 of power lead 6 terminations is being inserted in the supply socket that is connected on the civil power, the paper tape that two root records are used inserts from notch 3, one is passed through from ink powder paper disc 2 fronts, and another root passes through from ink powder paper disc 2 back, fixedly the paper tape upper end, hang up weight below the paper tape, turn on the power switch 8, pilot lamp 9 lights, and unclamps the upper end paper tape, article two, paper tape will pass through notch 3 fast, just can carry out acceleration of gravity and test.
By the utility model, the body 1 of spark timer is laid can be reached complete level, make the frictional resistance minimum of paper tape and body 1, test result is very accurate.
Claims (1)
1. spark timer, be on the last plane of the body (1) of commercially available spark timer, use seccotine last two the spirit bubble pipes that bond, it is characterized in that, two spirit bubble Guan Zhongyi longitudinal axis with body (1) be parallel fully to be vertical equity bubble pipe (4), another transverse axis with body (1) complete parallel is that transverse horizontal is steeped and managed (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320132405 CN203102669U (en) | 2013-03-07 | 2013-03-07 | Electric spark timer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320132405 CN203102669U (en) | 2013-03-07 | 2013-03-07 | Electric spark timer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203102669U true CN203102669U (en) | 2013-07-31 |
Family
ID=48854055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320132405 Expired - Fee Related CN203102669U (en) | 2013-03-07 | 2013-03-07 | Electric spark timer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203102669U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897206A (en) * | 2018-08-12 | 2018-11-27 | 贵州省剑河民族中学 | A kind of spark timer of adjustable paper tape width |
-
2013
- 2013-03-07 CN CN 201320132405 patent/CN203102669U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108897206A (en) * | 2018-08-12 | 2018-11-27 | 贵州省剑河民族中学 | A kind of spark timer of adjustable paper tape width |
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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 |
Granted publication date: 20130731 Termination date: 20140307 |