CN201054196Y - Friction force demonstration device - Google Patents
Friction force demonstration device Download PDFInfo
- Publication number
- CN201054196Y CN201054196Y CNU2007201230203U CN200720123020U CN201054196Y CN 201054196 Y CN201054196 Y CN 201054196Y CN U2007201230203 U CNU2007201230203 U CN U2007201230203U CN 200720123020 U CN200720123020 U CN 200720123020U CN 201054196 Y CN201054196 Y CN 201054196Y
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- CN
- China
- Prior art keywords
- spring balance
- utility
- model
- demonstration device
- fixed pulley
- 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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- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The utility model discloses a frictional force demonstration device, which belongs to a teaching aid; the utility model aims at providing a frictional force demonstrator with convenient operation and accurate numerical reading. The technical proposal of the utility model comprises a spring balance and a fraction block; the spring balance (2) and a fixed pulley (3) are fixed on a supporting bracket (1), a bearing plate (4) is arranged on the supporting bracket (1), and the fraction block (5) arranged on the bearing plate (4) is connected with the spring balance (2) through a traction rope wound by the fixed pulley (3). The utility model has the advantages that the structure is simple, the operation is convenient, and the numerical reading is convenient and accurate, thereby being the ideal teaching aid for physical experiment.
Description
Technical field:
The utility model relates to a kind of physics teaching aid, relates in particular to a kind of device of demonstrating force of sliding friction.
Background technology:
Force of sliding friction is a knowledge point must grasping in the physics teaching in secondary school, and its content is more abstract; At present, generally be to adopt the spring balance that is connected with friction block as easy demonstrating appliance, its shortcoming is: thus the inhomogeneous spring balance read untrue that causes of the movement velocity of friction block; In addition, owing to spring balance is among the motion, so reading is also inconvenient.
Summary of the invention:
At the above-mentioned defective that exists in the prior art, the utility model aims to provide a kind of friction force demonstration device of easy and simple to handle, accuracy of reading.
To achieve these goals, the utility model by the following technical solutions: it comprises spring balance and friction block; Spring balance and fixed pulley are fixed on the support, and supporting plate is placed on the support, and the friction block that is placed on the supporting plate surface is connected with spring balance by the traction rope of walking around fixed pulley.
Compared with the prior art, the utility model is owing to be fixed on spring balance on the support, and adopted movably supporting plate, therefore overcome conventional apparatus read untrue, inconvenient defective effectively.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of traditional friction force demonstration device.
Among the figure: support 1 spring balance 2 fixed pulleys 3 supporting plates 4 friction blocks 5
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing and specific embodiment:
As shown in Figure 1: spring balance 2 is vertically fixed on the support 1 of square, is placed with a supporting plate 4 on the table top of support 1, and traction rope is walked around the friction block 5 that the fixed pulley 3 that is fixed on the support 1 will be placed on the supporting plate 4 and is connected with spring balance 2.
Be not difficult to find out that from Fig. 2 during the spring balance 5 of traditional friction force demonstration device was kept in motion all the time, the scale that therefore reads spring balance 5 was very inconvenient.
Claims (1)
1. a friction force demonstration device comprises spring balance and friction block; It is characterized in that: spring balance (2) and fixed pulley (3) are fixed on the support (1), and supporting plate (4) is placed on the support (1), and the friction block (5) that is placed on supporting plate (4) surface is connected with spring balance (2) by the traction rope of walking around fixed pulley (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201230203U CN201054196Y (en) | 2007-06-11 | 2007-06-11 | Friction force demonstration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201230203U CN201054196Y (en) | 2007-06-11 | 2007-06-11 | Friction force demonstration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201054196Y true CN201054196Y (en) | 2008-04-30 |
Family
ID=39393858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201230203U Expired - Fee Related CN201054196Y (en) | 2007-06-11 | 2007-06-11 | Friction force demonstration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201054196Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103473973A (en) * | 2013-10-08 | 2013-12-25 | 熊德永 | Sliding friction force demonstration device |
-
2007
- 2007-06-11 CN CNU2007201230203U patent/CN201054196Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103473973A (en) * | 2013-10-08 | 2013-12-25 | 熊德永 | Sliding friction force demonstration device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080430 |