CN205302778U - Free fall presentation device - Google Patents
Free fall presentation device Download PDFInfo
- Publication number
- CN205302778U CN205302778U CN201520977629.1U CN201520977629U CN205302778U CN 205302778 U CN205302778 U CN 205302778U CN 201520977629 U CN201520977629 U CN 201520977629U CN 205302778 U CN205302778 U CN 205302778U
- Authority
- CN
- China
- Prior art keywords
- copper pipe
- funnel
- magnet piece
- opening
- stereoplasm tube
- 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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- Walking Sticks, Umbrellas, And Fans (AREA)
Abstract
The utility model relates to a physical experiment device, especially a free fall presentation device, including demonstration portion and speed reduction portion, demonstration portion is an inside cavity both ends system has open -ended hard pipe, this hard pipe adoption transparent material, the vertical setting of hard pipe, its lower extreme opening is counterpointed and is installed speed reduction portion, speed reduction portion includes an inside cavity both ends open -ended copper pipe, and a plurality of spring leafs are made at this copper pipe upper end even interval of inner edge, and are a plurality of form the clearance between the inboard tip of spring leaf, this clearance inside callipers is equipped with a magnet piece, and this magnet piece suspension is in the upper end of copper pipe, copper pipe upper end opening with the buffering portion that is used for accepting the pombe that installs between the hard pipe lower extreme opening, buffering portion includes a funnel, and this funnel wide -mouth portion pastes along its inner edge has a sponge layer, sponge layer middle part system has the corresponding through -hole with funnel slot portion, wide -mouth portion suit is in hard pipe's lower tip slot portion inner edge suit is in the upper end of copper pipe, and this slot troops under one's command side has clamped the copper of bit position is intraductal the magnet piece.
Description
Technical field
This utility model relates to a kind of physics facility, especially a kind of freely falling body apparatus for demonstrating.
Background technology
In current Physical Experiment, the apparatus for demonstrating for experiment with falling objects is generally adopted a manually hand-held metal ball, afterwards by metal ball without the let-down of speed to demonstrate the process that metal ball is converted to kinetic energy under being left out friction condition by gravitional force.
But owing to there is no deceleration device in presentation process, and the quality of metal ball is bigger, the process on ground that drops easily causes the damage on ground, and sound can be there is when dropping and tumbles everywhere in metal ball, thus the classroom discipline affected in classroom, even also the order of attending class in other classrooms can be caused bad impact.
Utility model content
The purpose of this utility model is in that to overcome the deficiencies in the prior art, it is provided that one prevents metal ball from tumbling, and reduces and noise occurs, moreover it is possible to a kind of freely falling body apparatus for demonstrating that Lenz's law is demonstrated.
This utility model is achieved through the following technical solutions:
A kind of freely falling body apparatus for demonstrating, it is characterized in that: include demonstration portion and reduction part, described demonstration portion is the stereoplasm tube that inner hollow two ends are shaped with opening, this stereoplasm tube adopts transparent material, described stereoplasm tube is vertically arranged, its lower ending opening para-position is provided with described reduction part, described reduction part includes the copper pipe of an inner hollow both ends opening, this inner edge, copper pipe upper end uniform intervals makes multiple spring leaf, gap is formed between multiple described spring leaf medial ends, a magnet piece it is installed with in this gap, this magnet piece is suspended at the upper end of copper pipe, buffer part for accepting metal ball is installed between described copper pipe upper end open and described stereoplasm tube lower ending opening.
And, described buffer part includes a funnel, this funnel wide-mouth portion is pasted with a spongy layer along its inner rim, the through hole corresponding with funnel slot portion it is shaped with in the middle part of described spongy layer, described wide-mouth portion is sleeved on inner edge, slot portion described in the bottom of described stereoplasm tube and is sleeved on the upper end of copper pipe, is installed with described magnet piece below this slot portion in the copper pipe of para postion.
And, described magnet piece upper surface is installed with the metal bowl of an opening and the phase para-position of funnel slot portion.
And, described copper pipe bottom outer rim is shaped with foot support more than, is shaped with a cushion pad between the stempoda of described many foot supports, the opening phase para-position that this cushion pad and described copper pipe bottom are made.
Advantage of the present utility model and having the benefit effect that
In this utility model, demonstration portion adopts clear hard pipe for demonstrating the whole process of metal ball free-falling, buffer part is used for accepting metal ball, discharge the part kinetic energy of its whereabouts, reduction part is slowed down for carrying out the metal ball demonstrated accepting, it is to avoid the problem tumbling collision due to metal ball after landing; The wide-mouth portion of the funnel that wherein buffer part is made, the area of the undertaking of copper pipe can be increased, avoid the noise that metal ball produces with copper pipe direct collision, the metal bowl that below funnel slot portion, para-position is installed can be used for accepting metal ball, in the process fallen together with Magnet afterwards, the induction field that Magnet produces in hollow copper pipe stops dropping of Magnet to be slowed down, therefore moderating process not only reach the purpose that the metal ball above Magnet is slowed down, but also Lenz's law has been demonstrated; Metal ball after copper pipe slows down and magnet piece can be carried out energy-absorbing by the support assorted cushion pad made below copper pipe, it is to avoid cause the problem that metal ball tumbles under the effect of remaining kinetic energy, thus reducing the noise of generation.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the partial enlarged drawing in A portion in Fig. 1.
Detailed description of the invention
By the examples below this utility model being elaborated, described embodiment is illustrative and not restrictive, it is impossible to limit protection domain of the present utility model with this.
A kind of freely falling body apparatus for demonstrating, innovation of the present utility model is in that, including demonstration portion and reduction part, described demonstration portion is the stereoplasm tube 1 that inner hollow two ends are shaped with opening, this stereoplasm tube adopts transparent material, described stereoplasm tube is vertically arranged, its lower ending opening para-position is provided with described reduction part, described reduction part includes the copper pipe 3 of an inner hollow both ends opening, this inner edge, copper pipe upper end uniform intervals makes multiple spring leaf 8, gap is formed between multiple described spring leaf medial ends, a magnet piece 7 it is installed with in this gap, this magnet piece is suspended at the upper end of copper pipe, buffer part for accepting metal ball is installed between described copper pipe upper end open and described stereoplasm tube lower ending opening.
In the present embodiment, described buffer part includes a funnel 2, this funnel wide-mouth portion is pasted with a spongy layer 9 along its inner rim, the through hole corresponding with funnel slot portion it is shaped with in the middle part of described spongy layer, described wide-mouth portion is sleeved on inner edge, slot portion described in the bottom of described stereoplasm tube and is sleeved on the upper end of copper pipe, is installed with described magnet piece below this slot portion in the copper pipe of para postion. Described magnet piece upper surface is installed with the metal bowl 6 of an opening and the phase para-position of funnel slot portion.
In the present embodiment, described copper pipe bottom outer rim is shaped with foot support 4 more than, is shaped with a cushion pad 5, the opening phase para-position that this cushion pad and described copper pipe bottom are made between the stempoda of described many foot supports.
Use procedure of the present utility model is:
When this utility model uses, first deceleration device is vertically placed in flat bottom surface with many foot supports, user only need to by original experiment method afterwards, and metal ball is placed the upper end opening part with stereoplasm tube, afterwards by metal ball without going out speed let-down, when let-down metal ball touches funnel wide-mouth portion, the kinetic energy of metal ball can be carried out preliminary absorption and conduction by spongy layer, owing to magnet piece to be applied with downward power, magnet piece, drop in the gap that metal ball and metal bowl can be made by spring leaf medial end, in the process of dropping, copper pipe is defined induction field by magnet piece, according to Lenz's law, magnet piece can be played inhibition by induction field, thus reaching the purpose slowed down, final being fallen to by the underpart opening of copper pipe completes whole experimentation in cushion pad.
In this utility model, demonstration portion adopts clear hard pipe for demonstrating the whole process of metal ball free-falling, buffer part is used for accepting metal ball, discharge the part kinetic energy of its whereabouts, reduction part is slowed down for carrying out the metal ball demonstrated accepting, it is to avoid the problem tumbling collision due to metal ball after landing; The wide-mouth portion of the funnel that wherein buffer part is made, the area of the undertaking of copper pipe can be increased, avoid the noise that metal ball produces with copper pipe direct collision, the metal bowl that below funnel slot portion, para-position is installed can be used for accepting metal ball, in the process fallen together with Magnet afterwards, the induction field that Magnet produces in hollow copper pipe stops dropping of Magnet to be slowed down, therefore moderating process not only reach the purpose that the metal ball above Magnet is slowed down, but also Lenz's law has been demonstrated; Metal ball after copper pipe slows down and magnet piece can be carried out energy-absorbing by the support assorted cushion pad made below copper pipe, it is to avoid cause the problem that metal ball tumbles under the effect of remaining kinetic energy, thus reducing the noise of generation.
Claims (4)
1. a freely falling body apparatus for demonstrating, it is characterized in that: include demonstration portion and reduction part, described demonstration portion is the stereoplasm tube that inner hollow two ends are shaped with opening, this stereoplasm tube adopts transparent material, described stereoplasm tube is vertically arranged, its lower ending opening para-position is provided with described reduction part, described reduction part includes the copper pipe of an inner hollow both ends opening, this inner edge, copper pipe upper end uniform intervals makes multiple spring leaf, gap is formed between multiple described spring leaf medial ends, a magnet piece it is installed with in this gap, this magnet piece is suspended at the upper end of copper pipe, buffer part for accepting metal ball is installed between described copper pipe upper end open and described stereoplasm tube lower ending opening.
2. a kind of freely falling body apparatus for demonstrating according to claim 1, it is characterized in that: described buffer part includes a funnel, this funnel wide-mouth portion is pasted with a spongy layer along its inner rim, the through hole corresponding with funnel slot portion it is shaped with in the middle part of described spongy layer, described wide-mouth portion is sleeved on inner edge, slot portion described in the bottom of described stereoplasm tube and is sleeved on the upper end of copper pipe, is installed with described magnet piece below this slot portion in the copper pipe of para postion.
3. a kind of freely falling body apparatus for demonstrating according to claim 2, it is characterised in that: described magnet piece upper surface is installed with the metal bowl of an opening and the phase para-position of funnel slot portion.
4. a kind of freely falling body apparatus for demonstrating according to claim 1, it is characterized in that: described copper pipe bottom outer rim is shaped with foot support more than, it is shaped with a cushion pad, the opening phase para-position that this cushion pad and described copper pipe bottom are made between the stempoda of described many foot supports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977629.1U CN205302778U (en) | 2015-11-28 | 2015-11-28 | Free fall presentation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977629.1U CN205302778U (en) | 2015-11-28 | 2015-11-28 | Free fall presentation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205302778U true CN205302778U (en) | 2016-06-08 |
Family
ID=56436380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520977629.1U Expired - Fee Related CN205302778U (en) | 2015-11-28 | 2015-11-28 | Free fall presentation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205302778U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146503A (en) * | 2017-06-22 | 2017-09-08 | 高国杰 | A kind of multi-functional physical demonstration apparatus and method |
| CN110111653A (en) * | 2019-05-14 | 2019-08-09 | 江苏师范大学 | A kind of steel ball semi-automatic collecting device for acceleration of gravity experiment |
-
2015
- 2015-11-28 CN CN201520977629.1U patent/CN205302778U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107146503A (en) * | 2017-06-22 | 2017-09-08 | 高国杰 | A kind of multi-functional physical demonstration apparatus and method |
| CN110111653A (en) * | 2019-05-14 | 2019-08-09 | 江苏师范大学 | A kind of steel ball semi-automatic collecting device for acceleration of gravity experiment |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20161128 |