CN212933891U - Overweight and weightlessness demonstration instrument - Google Patents
Overweight and weightlessness demonstration instrument Download PDFInfo
- Publication number
- CN212933891U CN212933891U CN202021496601.3U CN202021496601U CN212933891U CN 212933891 U CN212933891 U CN 212933891U CN 202021496601 U CN202021496601 U CN 202021496601U CN 212933891 U CN212933891 U CN 212933891U
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- overweight
- weightlessness
- limit switch
- hollow frame
- cavity frame
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- 238000012360 testing method Methods 0.000 claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 17
- 238000013461 design Methods 0.000 abstract description 3
- 239000003086 colorant Substances 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an overweight weightlessness demonstration appearance, including the cavity frame, set up in the inside power of cavity frame, set up switch on the panel of cavity frame one side and set up weightlessness pilot lamp and overweight pilot lamp on the panel of cavity frame opposite side, the inside spout that is equipped with respectively in both sides of cavity frame, the inboard upper portion of cavity frame is equipped with the spring dynamometer, be equipped with the test thing piece on this spring dynamometer's the couple, be equipped with on the test thing piece with both sides spout sliding fit's metal pole, be equipped with on the cavity frame panel of switch downside and be used for responding to the last limit switch and the lower limit switch of metal pole upper and lower sliding position. The utility model discloses simple structure, reasonable in design, low in cost shows overweight, weightless physical phenomenon through the pilot lamp of different colours, can bring enjoyment for student's classroom, lets the student be familiar with the kinematics more fast, demonstrates overweight, weightless phenomenon more vividly directly perceivedly.
Description
Technical Field
The utility model belongs to the technical field of overweight weightlessness teaching auxiliary device, concretely relates to overweight weightlessness demonstration appearance.
Background
There is a knowledge point in the high school physics textbook-overweight and weightlessness, which are difficult for students to understand and also very troublesome for teachers to explain, because the abstract of the concept is not well understood, which is a difficult point for the high school students who first contact the concept. At present, no instrument capable of demonstrating overweight and weightlessness phenomena is available for schools in the teaching instrument market.
Disclosure of Invention
The utility model provides a technical problem provide a simple structure and reasonable in design's overweight weightlessness demonstration appearance.
The overweight and weightlessness demonstration instrument is characterized by comprising a hollow frame, a power supply arranged in the hollow frame, a power switch arranged on one side panel of the hollow frame, and a weightlessness indicator lamp and an overweight indicator lamp arranged on the other side panel of the hollow frame, wherein sliding chutes are respectively arranged in two sides of the hollow frame, a spring dynamometer is arranged at the upper part of the inner side of the hollow frame, a test object block is arranged on a hook of the spring dynamometer, a metal rod in sliding fit with the sliding chutes on the two sides is arranged on the test object block, and an upper limit switch and a lower limit switch for sensing the up-and-down sliding position of the metal rod are arranged on the hollow frame panel on the lower side of the power switch.
Preferably, the power supply, the power switch, the upper limit switch, the lower limit switch, the weightlessness indicator light and the overweight indicator light form a parallel time delay control circuit, wherein a series branch consisting of the overweight indicator light and the lower limit switch and a series branch consisting of the weightlessness indicator light and the upper limit switch are connected in parallel and then are connected with the power supply through the power switch.
The utility model discloses simple structure, reasonable in design, low in cost shows overweight, weightless physical phenomenon through the pilot lamp of different colours, can bring enjoyment for student's classroom, lets the student be familiar with the kinematics more fast, demonstrates overweight, weightless phenomenon more vividly directly perceivedly.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic diagram of the circuit connection of the present invention.
In the figure: 1-power switch, 2-spring dynamometer, 3-upper limit switch, 4-lower limit switch, 5-weightlessness indicator lamp, 6-middle frame, 7-test object block, 8-metal rod and 9-overweight indicator lamp.
Detailed Description
The technical scheme of the utility model is described in detail with the accompanying drawings. As shown in fig. 1, the overweight weightlessness demonstration instrument comprises a hollow frame 6, a power supply arranged inside the hollow frame 6, a power switch 1 arranged on one side panel of the hollow frame 6, and a weightlessness indicator lamp 5 and an overweight indicator lamp 9 arranged on the other side panel of the hollow frame 6, wherein sliding chutes are respectively arranged inside two sides of the hollow frame 6, a spring dynamometer 2 is arranged on the upper part of the inner side of the hollow frame 6, a test object block 7 is arranged on a hook of the spring dynamometer 2, the object block is designed in a replaceable form, the quality of the object block is convenient to adjust, so that the best demonstration effect is achieved, a metal rod 8 in sliding fit with the sliding chutes on two sides is arranged on the test object block 7, and an upper limit switch 3 and a lower limit switch 4 for inducing the up-down sliding position of the metal rod.
The utility model comprises a power supply, a power supply switch, an upper limit switch, a lower limit switch, a weightlessness indicator light and an overweight indicator light, wherein a series branch consisting of the overweight indicator light and the lower limit switch and a series branch consisting of the weightlessness indicator light and the upper limit switch are connected in parallel and then are connected with the power supply through the power supply switch, the delay time of the delay control circuit is set to be 1s, when an experiment is started, a power supply button is turned on, the hollow frame is held by hands to move upwards, a test object block drives a metal rod to move upwards, because the test object block is arranged on a hook of a spring dynamometer, in the process of the integral upward movement of the hollow frame and the spring dynamometer, the test object block at an independent end is in an overweight state, at the moment, the metal rod fixed on the test object block generates relative displacement in sliding grooves at two sides of the hollow frame, when the relative position reaches a certain degree, the metal rod on the test object block can contact with the lower limit, then a series branch formed by the overweight indicator lamp and the lower limit switch is conducted, the overweight indicator lamp is lightened, and the overweight indicator lamp is turned off after the metal rod is separated from the lower limit switch for 1 s; the opposite process, the hollow frame is held by hands to move downwards, the test object block drives the metal rod to move downwards, the test object block is arranged on a hook of the spring dynamometer, in the process that the hollow frame and the spring dynamometer integrally move downwards, the test object block at the independent end is in a weightless state, the metal rod fixed on the test object block generates relative displacement in sliding grooves in two sides of the hollow frame at the moment, the metal rod on the test object block can contact an upper limiting block on a panel of the hollow frame when the relative displacement reaches a certain degree, and further a series branch composed of the weightless indicator lamp and the upper limiting switch is conducted, the weightless indicator lamp is lightened, the metal rod is extinguished after being separated from the upper limiting switch for 1s, so that overweight and weightlessness phenomena are more visually displayed, and the interestingness of classroom learning is increased to a certain degree.
The foregoing shows and describes the general principles of the present invention, with its principal features and advantages, and further, various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (2)
1. The overweight weightlessness demonstration instrument is characterized by comprising a hollow frame, a power supply arranged in the hollow frame, a power switch arranged on one side panel of the hollow frame, and a weightlessness indicator light and an overweight indicator light arranged on the other side panel of the hollow frame, wherein sliding chutes are respectively arranged in two sides of the hollow frame, a spring dynamometer is arranged on the upper part of the inner side of the hollow frame, a test object is arranged on a hook of the spring dynamometer, a metal rod in sliding fit with the sliding chutes on the two sides is arranged on the test object block, and an upper limit switch and a lower limit switch for sensing the up-and-down sliding position of the metal rod are arranged on the hollow frame panel on the.
2. An overweight and weightlessness demonstration instrument according to claim 1, characterized in that: the power supply, the power switch, the upper limit switch, the lower limit switch, the weightlessness indicator lamp and the overweight indicator lamp form a parallel time delay control circuit, wherein a series branch consisting of the overweight indicator lamp and the lower limit switch and a series branch consisting of the weightlessness indicator lamp and the upper limit switch are connected in parallel and then are connected with the power supply through the power switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021496601.3U CN212933891U (en) | 2020-07-27 | 2020-07-27 | Overweight and weightlessness demonstration instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021496601.3U CN212933891U (en) | 2020-07-27 | 2020-07-27 | Overweight and weightlessness demonstration instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212933891U true CN212933891U (en) | 2021-04-09 |
Family
ID=75332272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021496601.3U Expired - Fee Related CN212933891U (en) | 2020-07-27 | 2020-07-27 | Overweight and weightlessness demonstration instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212933891U (en) |
-
2020
- 2020-07-27 CN CN202021496601.3U patent/CN212933891U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210409 |