CN204791688U - Lever is used in teaching - Google Patents
Lever is used in teaching Download PDFInfo
- Publication number
- CN204791688U CN204791688U CN201520505504.9U CN201520505504U CN204791688U CN 204791688 U CN204791688 U CN 204791688U CN 201520505504 U CN201520505504 U CN 201520505504U CN 204791688 U CN204791688 U CN 204791688U
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- CN
- China
- Prior art keywords
- lever
- expansion link
- base
- vertical rod
- fixed
- 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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Abstract
The utility model discloses a lever is used in teaching, including the bottom plate, be fixed with the base on the bottom plate, inserted the pole setting in the base, be threaded connection between pole setting and the base, inserted the telescopic link in the pole setting, be equipped with adjust knob between pole setting and the telescopic link, the top of telescopic link is fixed with a pin, has inserted a lever body in the pin, is equipped with the spout on the lever body, still includes the weight of a plurality of etc. Layer, be equipped with on the weight with spout assorted slider, be equipped with the couple on the weight, be equipped with the length scale on the outer wall of lever body. The beneficial effects of the utility model are that: (1 ) simple structure, (2 )Become a plurality of part with whole lever split very easily, easily carry, (3 )Easily adjust the height of lever body, (4 )Can the continuity control size of the lever arm of force that the body receives, the size of the ability direct readout arm of force, very convenient, (5 )Easily adjust the lever body to the balance, (6) can provide good lighting condition.
Description
Technical field
The utility model relates to a kind of physics teaching instrument, particularly a kind of lever for teaching.
Background technology
Lever is a kind of conventional physical teaching aid, in Process of Physics Teaching in Middle School, often needing what to be demonstrated by lever is the arm of force, and what is moment, and lever keeps the condition etc. of balance, but, when existing lever demonstration, need by other demonstration equipment such as dynamometers, thus very inconvenient, existing lever is integral type simultaneously, and height can not adjust, and carries also very inconvenient.
Summary of the invention
Problem to be solved in the utility model is: provide the lever for teaching that a kind of structure is simple, demonstrate conveniently, be easy to dismountable and have illumination functions.
In order to solve the problem, lever for teaching of the present utility model, comprise base plate, described base plate is fixed with base, vertical rod is inserted with in described base, described vertical rod with between base for being threaded, expansion link is inserted with in described vertical rod, adjusting knob is provided with between described vertical rod and expansion link, the top of described expansion link is fixed with a pin, an its body is inserted with in described pin, described its body is provided with chute, also comprise the counterweight that several grades are heavy, described counterweight is provided with the slide block matched with chute, described counterweight is provided with hook, the outer wall of described its body is provided with length scale.
Conveniently its body is adjusted to equilibrium state, lever for teaching of the present utility model, the two ends, left and right of described its body are respectively inserted with the adjusting bolt of an adjustment, described adjusting bolt with between its body for being threaded.
In order to good lighting condition can be provided, lever for teaching of the present utility model, the top of described expansion link is fixed with support bar, described support bar is fixed with lighting rod, described lighting rod is arranged in horizontal direction, described lighting rod is evenly equipped with several LED, is provided with battery in described expansion link, the outer wall of described expansion link is provided with shift knob, is in series after several LED parallel connections described with shift knob and battery.
The beneficial effect that the utility model obtains is: (1) structure is simple; (2) between vertical rod with base for being threaded, expansion link is inserted in vertical rod, and its body is articulated with in pin, is thus easy to whole lever to split into several parts, is easy to carry about with one; (3) expansion link is inserted in vertical rod, is provided with adjusting knob between expansion link and vertical rod, and its body, by the top of pin-hinges in vertical rod, is thus easy to the height adjusting its body; (4) its body is provided with chute, the outer wall of its body is provided with length scale, counterweight is provided with the slide block matched with chute, thus counterweight can be free to slide along its body, when demonstrating, and the energy position of continuous setup counterweight on its body, that is can the size of the arm of force suffered by continuous setup its body, by length scale, the size of the arm of force directly can be read, very convenient; (5) counterweight is provided with hook, thus facilitates and is cascaded by several counterweights, change the size of the gravity suffered by its body; (6) two ends, left and right of its body are respectively inserted with an adjusting bolt, are easy to its body to be adjusted to balance, and (7), when night or light are not good, open shift knob, and LED is luminous, can provide good lighting condition.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the partial enlarged drawing in A-A face in Fig. 1.
In figure: 1, base plate, 2, base, 3, vertical rod, 4, expansion link, 5, battery, 6, adjusting knob, 7, shift knob, 8, pin, 9, length scale, 10, its body, 11, chute, 12, support bar, 13, LED, 14, lighting rod, 15, counterweight, 16, link up with, 17, adjusting bolt, 18, slide block.
Embodiment
As depicted in figs. 1 and 2, lever for teaching of the present utility model, comprise base plate 1, described base plate 1 is fixed with base 2, vertical rod 3 is inserted with in described base 2, described vertical rod 3 with between base 2 for being threaded, expansion link 4 is inserted with in described vertical rod 3, adjusting knob 6 is provided with between described vertical rod 3 and expansion link 4, the top of described expansion link 4 is fixed with a pin 8, an its body 10 is inserted with in described pin 8, described its body 10 is provided with chute 11, also comprise several etc. heavy counterweight 15, described counterweight 15 is provided with the slide block 18 matched with chute 11, described counterweight 15 is provided with hook 16, the outer wall of described its body 10 is provided with length scale 9, the two ends, left and right of described its body 10 are respectively inserted with the adjusting bolt 17 of an adjustment, described adjusting bolt 17 with between its body 10 for being threaded, the top of described expansion link 4 is fixed with support bar 12, described support bar 12 is fixed with lighting rod 14, described lighting rod 14 is arranged in horizontal direction, described lighting rod 14 is evenly equipped with several LED 13, battery 5 is provided with in described expansion link 4, the outer wall of described expansion link 4 is provided with shift knob 7, after several LED 13 described are in parallel and shift knob 7 and battery 5 be in series.
Lever for teaching of the present utility model, structure is simple, and for being threaded between vertical rod 3 with base 2, expansion link 4 is inserted in vertical rod 3, and its body 10 is articulated with in pin 8, is thus easy to whole lever to split into several parts, is easy to carry about with one.
Expansion link 4 is inserted in vertical rod 3, is provided with adjusting knob 6 between expansion link 4 and vertical rod 3, and its body 10 is articulated with the top of vertical rod 3 by pin 8, is thus easy to the height adjusting its body 10.
Its body 10 is provided with chute 11, the outer wall of its body 10 is provided with length scale 9, counterweight 15 is provided with the slide block 18 matched with chute 11, thus counterweight 15 can slide along its body 10, when demonstrating, and the position of energy continuous setup counterweight 15 on its body 10, that is can the size of the arm of force suffered by continuous setup its body 10, by length scale 9, the size of the arm of force directly can be read, very convenient.
Counterweight 15 is provided with hook 16, thus facilitates and is cascaded by several counterweights 15, change the size of the gravity suffered by its body 10.
The two ends, left and right of its body 10 are respectively inserted with an adjusting bolt 6, are easy to its body 10 to be adjusted to balance.
When night or light are not good, open shift knob 7, LED 13 is luminous, can provide good lighting condition.
Claims (3)
1. a lever for teaching, it is characterized in that: comprise base plate (1), described base plate (1) is fixed with base (2), vertical rod (3) is inserted with in described base (2), for being threaded between described vertical rod (3) with base (2), expansion link (4) is inserted with in described vertical rod (3), adjusting knob (6) is provided with between described vertical rod (3) and expansion link (4), the top of described expansion link (4) is fixed with a pin (8), an its body (10) is inserted with in described pin (8), described its body (10) is provided with chute (11), also comprise the counterweight (15) that several grades are heavy, described counterweight (15) is provided with the slide block (18) matched with chute (11), described counterweight (15) is provided with hook (16), the outer wall of described its body (10) is provided with length scale (9).
2. lever for teaching according to claim 1, it is characterized in that: the two ends, left and right of described its body (10) are respectively inserted with the adjusting bolt (17) of an adjustment, for being threaded between described adjusting bolt (17) with its body (10).
3. lever for teaching according to claim 1, it is characterized in that: the top of described expansion link (4) is fixed with support bar (12), described support bar (12) is fixed with lighting rod (14), described lighting rod (14) is arranged in horizontal direction, described lighting rod (14) is evenly equipped with several LED (13), battery (5) is provided with in described expansion link (4), the outer wall of described expansion link (4) is provided with shift knob (7), after described several LED (13) are in parallel and shift knob (7) and battery (5) be in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520505504.9U CN204791688U (en) | 2015-07-14 | 2015-07-14 | Lever is used in teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520505504.9U CN204791688U (en) | 2015-07-14 | 2015-07-14 | Lever is used in teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204791688U true CN204791688U (en) | 2015-11-18 |
Family
ID=54531691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520505504.9U Expired - Fee Related CN204791688U (en) | 2015-07-14 | 2015-07-14 | Lever is used in teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204791688U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107818718A (en) * | 2017-11-22 | 2018-03-20 | 朱于良 | A kind of Students ' Learning lever principle experiment appliance |
| CN109285428A (en) * | 2016-08-17 | 2019-01-29 | 史玉成 | Buoyancy demonstration teaching aid |
| CN113012532A (en) * | 2021-02-24 | 2021-06-22 | 河南水利与环境职业学院 | Economic mathematics is with measurement statistics teaching device |
-
2015
- 2015-07-14 CN CN201520505504.9U patent/CN204791688U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109285428A (en) * | 2016-08-17 | 2019-01-29 | 史玉成 | Buoyancy demonstration teaching aid |
| CN107818718A (en) * | 2017-11-22 | 2018-03-20 | 朱于良 | A kind of Students ' Learning lever principle experiment appliance |
| CN107818718B (en) * | 2017-11-22 | 2020-02-04 | 朱于良 | Student learns lever principle experimental apparatus |
| CN113012532A (en) * | 2021-02-24 | 2021-06-22 | 河南水利与环境职业学院 | Economic mathematics is with measurement statistics teaching device |
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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: 20151118 Termination date: 20160714 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |