CN207182746U - The simple apparatus for demonstrating of lever principle - Google Patents
The simple apparatus for demonstrating of lever principle Download PDFInfo
- Publication number
- CN207182746U CN207182746U CN201720835443.1U CN201720835443U CN207182746U CN 207182746 U CN207182746 U CN 207182746U CN 201720835443 U CN201720835443 U CN 201720835443U CN 207182746 U CN207182746 U CN 207182746U
- Authority
- CN
- China
- Prior art keywords
- cross bar
- lever principle
- putting groove
- demonstrating
- support
- 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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- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
The utility model belongs to physical study aid field, more particularly to a kind of simple apparatus for demonstrating of lever principle, including casing, the top of casing is provided with support rail one putting groove, mounting hole and hook code putting groove, support bar is detachably installed in described mounting hole, the upper end of support bar is provided with center line, the upper end of support bar is also hinged with cross bar, the connector of support bar and cross bar matches with support rail one putting groove, graduation mark is distributed with cross bar, the zero point of graduation mark is corresponding with center line, the fixing hole corresponding with each graduation mark is additionally provided with cross bar, the both ends of cross bar are equipped with calibration regulation cock；Some hook codes are placed with built in described hook code putting groove.The simple apparatus for demonstrating of lever principle described in the utility model, it is simple in construction, it is easy to take, put and carries, is provided conveniently for giving lessons for Physical Education Teacher, also promote grasp of the student to lever principle, improve the learning efficiency of student.
Description
Technical field
A kind of simple apparatus for demonstrating of lever principle is the utility model is related to, belongs to physical study aid field.
Background technology
In Middle School Physics, lever principle is a very important theorem, and its formula is：Power × power arm=resistance
× resistance arm.Student often only remembers simple formula during study, understand for this formula it is not thorough enough,
Shortage intuitively understands that so grasp for lever rule is very unfavorable.Although existing lever instructional device is to a certain degree
On solve above mentioned problem, but such apparatus structure is complicated, space-consuming is very big, also, is unfavorable for taking, putting and carries.
Utility model content
Deficiency of the prior art, the technical problems to be solved in the utility model are more than：A kind of structure letter is provided
It is single, the simple apparatus for demonstrating of lever principle for being easy to take, put and carrying.
The simple apparatus for demonstrating of lever principle described in the utility model, including casing, the top of casing are provided with support-cross bar
Integral putting groove, mounting hole and hook code putting groove, support bar is detachably installed in described mounting hole, the upper end of support bar is set
Own centre line, the upper end of support bar are also hinged with cross bar, the connector and support-cross bar one putting groove phase of support bar and cross bar
Match, graduation mark is distributed with cross bar, the zero point of graduation mark is corresponding with center line, is additionally provided with cross bar relative with each graduation mark
The fixing hole answered, the both ends of cross bar are equipped with calibration regulation cock；Some hook codes are placed with built in described hook code putting groove.
Well is additionally provided with the top of above-mentioned casing, the instruments such as tweezers, cleaning brush can be put.
To be threadedly coupled between above-mentioned mounting hole and support bar, install, convenient disassembly, structural stability is stronger.
The both sides of above-mentioned casing are hinged with handle, make carrying more convenient.
The top of above-mentioned casing is provided with the case lid to match with casing, shields.
Operation principle and process：
In use, hook weight hanger is hung over to the checking that lever principle can be carried out in fixing hole, can be by hook code after use
Put back in hook code putting groove, after support bar and cross bar are removed, be placed in support-cross bar one putting groove, you can quickly retracting,
It is very convenient.
Possessed beneficial effect is the utility model compared with prior art：
The simple apparatus for demonstrating of lever principle described in the utility model, it is simple in construction, it is easy to take, put and carries, is physics
Giving lessons for teacher provides conveniently, also promotes grasp of the student to lever principle, improves the learning efficiency of student.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the top view of Fig. 1 middle cases；
Fig. 3 is the top view after the utility model folding and unfolding；
Fig. 4 is structural representation when the utility model carries.
In figure：1st, casing；2nd, handle；3rd, hook code putting groove；4th, support-cross bar one putting groove；5th, mounting hole；6th, instrument
Groove；7th, hook code；8th, regulation cock is calibrated；9th, fixing hole；10th, case lid；11st, cross bar；12nd, support bar；13rd, center line；14th, scale
Line；15th, cleaning brush；16th, tweezers.
Embodiment
Embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As shown in Figures 1 to 4, the simple apparatus for demonstrating of lever principle described in the utility model, including casing 1, casing 1
Top is provided with support-cross bar one putting groove 4, mounting hole 5 and hook code putting groove 3, is detachably provided with described mounting hole 5
Support bar 12, the upper end of support bar 12 are provided with center line 13, and the upper end of support bar 12 is also hinged with cross bar 11, support bar 12 and horizontal stroke
The connector of bar 11 matches with support-cross bar one putting groove 4, is distributed with graduation mark 14 on cross bar 11, and the zero of graduation mark 14
Point is corresponding with center line 13, the fixing hole 9 corresponding with each graduation mark 14 is additionally provided with cross bar 11, the both ends of cross bar 11 are all provided with
There is calibration regulation cock 8；Some hook codes 7 are placed with built in described hook code putting groove 3.
In preferred embodiment：The top of casing 1 is additionally provided with well 6, can put the instruments such as tweezers 16, cleaning brush 15；
To be threadedly coupled between mounting hole 5 and support bar 12, install, convenient disassembly, structural stability is stronger；The both sides of casing 1 are hinged
There is handle 2, make carrying more convenient；The top of casing 1 is provided with the case lid 10 to match with casing 1, shields.
In use, the zero point of graduation mark 14 is set to be alignd with center line 13 by adjusting calibration regulation cock 8, then, by difference
The hook code 7 of number is hooked in corresponding fixing hole 9 respectively, you can carries out the checking of lever principle；, can be by hook after use
Code 7 is removed from fixing hole 9, is then put back in hook code putting groove 3, after support bar 12 and cross bar 11 are removed, is placed on support-horizontal stroke
In bar one putting groove 4, you can quickly retracting, it is very convenient.
The simple apparatus for demonstrating of lever principle described in the utility model, it is simple in construction, it is easy to take, put and carries, is physics
Giving lessons for teacher provides conveniently, also promotes grasp of the student to lever principle, improves the learning efficiency of student.
Claims (5)
1. a kind of simple apparatus for demonstrating of lever principle, including casing (1), it is characterised in that：The top of casing (1) be provided with support-
Cross bar one putting groove (4), mounting hole (5) and hook code putting groove (3), described mounting hole are detachably provided with support in (5)
Bar (12), the upper end of support bar (12) are provided with center line (13), and the upper end of support bar (12) is also hinged with cross bar (11), support bar
(12) connector with cross bar (11) matches with support-cross bar one putting groove (4), and graduation mark is distributed with (11) in cross bar
(14), the zero point of graduation mark (14) is corresponding with center line (13), is additionally provided with cross bar (11) corresponding with each graduation mark (14)
Fixing hole (9), the both ends of cross bar (11) are equipped with calibration regulation cock (8)；It is placed with built in described hook code putting groove (3) some
Hook code (7).
2. the simple apparatus for demonstrating of lever principle according to claim 1, it is characterised in that：The top of described casing (1)
It is additionally provided with well (6).
3. the simple apparatus for demonstrating of lever principle according to claim 1 or 2, it is characterised in that：Described mounting hole (5) with
It is threaded connection between support bar (12).
4. the simple apparatus for demonstrating of lever principle according to claim 1 or 2, it is characterised in that：The two of described casing (1)
Side is hinged with handle (2).
5. the simple apparatus for demonstrating of lever principle according to claim 1 or 2, it is characterised in that：Described casing (1) it is upper
Side is provided with the case lid (10) to match with casing (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720835443.1U CN207182746U (en) | 2017-07-11 | 2017-07-11 | The simple apparatus for demonstrating of lever principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720835443.1U CN207182746U (en) | 2017-07-11 | 2017-07-11 | The simple apparatus for demonstrating of lever principle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207182746U true CN207182746U (en) | 2018-04-03 |
Family
ID=61735743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720835443.1U Expired - Fee Related CN207182746U (en) | 2017-07-11 | 2017-07-11 | The simple apparatus for demonstrating of lever principle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207182746U (en) |
-
2017
- 2017-07-11 CN CN201720835443.1U patent/CN207182746U/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: 20180403 Termination date: 20200711 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |