CN206322388U - The small single pendulum of vacuum - Google Patents
The small single pendulum of vacuum Download PDFInfo
- Publication number
- CN206322388U CN206322388U CN201621361956.5U CN201621361956U CN206322388U CN 206322388 U CN206322388 U CN 206322388U CN 201621361956 U CN201621361956 U CN 201621361956U CN 206322388 U CN206322388 U CN 206322388U
- Authority
- CN
- China
- Prior art keywords
- glass jar
- base
- iron ball
- bumper
- groove
- 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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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model is related to a kind of physics demonstration teaching aid, the especially small single pendulum of vacuum, including a glass jar, the sealed bottom of the glass jar is provided with a base, an aspirating hole is made in the base, the aspirating hole can connect the closed cavity vacuum pumping state installed vavuum pump glass jar and formed on the inside of base, the upper end of the glass jar is hung with an iron ball by a cotton thread, one bumper made using flexible material is integrally installed positioned at the glass jar inner side end of the iron ball side, vertically make a groove in the middle part of the bumper, the inboard width of the groove is adapted with the external diameter of iron ball, with being provided with an electromagnet in the base outside the glass jar of the bumper homonymy, electromagnet connection is provided with a power supply.
Description
Technical field
The utility model is related to a kind of physics demonstration teaching aid, the especially small single pendulum of vacuum.
Background technology
Single pendulum is the demonstrating experiment device commonly used in a kind of physics, in the study of physical basis knowledge, is usually used in learning
During the raw lecture experiment changed for simple harmonic motion and gravitional force with kinetic energy.
In the lecture experiment that gravitional force is changed with kinetic energy is directed to, resistance and outside friction due to air
A theoretic explanation can be carried out, it is impossible to which its phenomenon is observed, therefore student is difficult to understand for the experiment of above-mentioned experiment
Purpose.
Utility model content
The purpose of this utility model be overcome the deficiencies in the prior art there is provided one kind it is rational in infrastructure, visual phenomenon it is true
Empty small single pendulum.
The utility model is adopted the technical scheme that：
The small single pendulum of vacuum, it is characterised in that：Including a glass jar, the sealed bottom of the glass jar is provided with a base,
An aspirating hole is made in the base, the aspirating hole can connect the closed cavity for installing vavuum pump glass jar with being formed on the inside of base and take out
For vacuum state, the upper end of the glass jar is hung with an iron ball by a cotton thread, in the glass jar of the iron ball side
Side end face is integrally provided with a bumper made using flexible material, and it is recessed that the middle part of the bumper vertically makes one
Groove, the inboard width of the groove is adapted with the external diameter of iron ball, with being installed in the base outside the glass jar of the bumper homonymy
There is an electromagnet, electromagnet connection is provided with a power supply.
Advantage of the present utility model and good effect are：
A sealing cavity is formed in the utility model, between glass jar and base, can be led to by outside vavuum pump afterwards
Aspirating hole is crossed by its closed cavity one vacuum state of formation, now can be considered iron ball only by the cotton thread in gravity and swing process
Frictional force, so as to greatly increase single pendulum swing time so that more qualitatively understanding gravitional force mutually turn with kinetic energy
Experiment purpose is changed, electromagnet and power supply are used to iron ball being fixed on elemental height position, and bumper is used to avoid in fixed iron ball
During collided rupture with glass jar, groove is then stronger in the determination of iron ball initial position, it is ensured that tested every time
The unification of iron ball position in journey.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the partial sectional view in A-A portions in Fig. 1.
Embodiment
With reference to embodiment, the utility model is further illustrated, following embodiments are illustrative, be not limited
, it is impossible to protection domain of the present utility model is limited with following embodiments.
The small single pendulum of vacuum, innovation of the present utility model is, including a glass jar 3, the sealed bottom peace of the glass jar
Equipped with a base 4, an aspirating hole 6 is made in the base, the aspirating hole can connect installation vavuum pump glass jar and shape on the inside of base
Into closed cavity vacuum pumping state, the upper end of the glass jar, which is integrally made in a link 1, the link, passes through a cotton thread
2 are hung with an iron ball 5, and one is integrally provided with using preventing that flexible material is made positioned at the glass jar inner side end of the iron ball side
Pad 9 is hit, a groove is vertically made at the middle part of the bumper, and the inboard width of the groove is mutually fitted with the external diameter of iron ball
Match somebody with somebody, with being provided with an electromagnet 8 in the base outside the glass jar of the bumper homonymy, electromagnet connection is provided with a power supply
7。
In the present embodiment, the flexible material that bumper is used can be silica gel, rubber etc..
The course of work of the present utility model is：
The utility model in use, iron ball is provided with the side rotation of bumper by operating personnel to glass jar first, by
Groove is formed with the middle part of bumper, therefore operating personnel can be such that iron ball falls on the inside of groove by rotating glass jar, operate afterwards
Personnel can turn on the power, and electromagnet, which is powered, opens absorption iron ball, and now operating personnel only need to steadily place glass jar vertically
Afterwards, electromagnet is closed, single pendulum can carry out rotation action.
A sealing cavity is formed in the utility model, between glass jar and base, can be led to by outside vavuum pump afterwards
Aspirating hole is crossed by its closed cavity one vacuum state of formation, now can be considered iron ball only by the cotton thread in gravity and swing process
Frictional force, so as to greatly increase single pendulum swing time so that more qualitatively understanding gravitional force mutually turn with kinetic energy
Experiment purpose is changed, electromagnet and power supply are used to iron ball being fixed on elemental height position, and bumper is used to avoid in fixed iron ball
During collided rupture with glass jar, groove is then stronger in the determination of iron ball initial position, it is ensured that tested every time
The unification of iron ball position in journey.
Claims (1)
1. the small single pendulum of vacuum, it is characterised in that：Including a glass jar, the sealed bottom of the glass jar is provided with a base, should
An aspirating hole is made in base, the aspirating hole can connect install the closed cavity formed on the inside of vavuum pump glass jar and base take out for
Vacuum state, the upper end of the glass jar is hung with an iron ball by a cotton thread, on the inside of the glass jar of the iron ball side
End face is integrally provided with a bumper made using flexible material, and it is recessed that the middle part of the bumper vertically makes one
Groove, the inboard width of the groove is adapted with the external diameter of iron ball, with being installed in the base outside the glass jar of the bumper homonymy
There is an electromagnet, electromagnet connection is provided with a power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621361956.5U CN206322388U (en) | 2016-12-13 | 2016-12-13 | The small single pendulum of vacuum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621361956.5U CN206322388U (en) | 2016-12-13 | 2016-12-13 | The small single pendulum of vacuum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206322388U true CN206322388U (en) | 2017-07-11 |
Family
ID=59267808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621361956.5U Expired - Fee Related CN206322388U (en) | 2016-12-13 | 2016-12-13 | The small single pendulum of vacuum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206322388U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036011A (en) * | 2018-07-13 | 2018-12-18 | 合肥市科技馆 | A kind of resonance swing exhibition article |
-
2016
- 2016-12-13 CN CN201621361956.5U patent/CN206322388U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036011A (en) * | 2018-07-13 | 2018-12-18 | 合肥市科技馆 | A kind of resonance swing exhibition article |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20171213 |