CN203406004U - Shadow experiment instrument - Google Patents
Shadow experiment instrument Download PDFInfo
- Publication number
- CN203406004U CN203406004U CN201320556816.3U CN201320556816U CN203406004U CN 203406004 U CN203406004 U CN 203406004U CN 201320556816 U CN201320556816 U CN 201320556816U CN 203406004 U CN203406004 U CN 203406004U
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- CN
- China
- Prior art keywords
- shadow
- experiment instrument
- rocking arm
- base
- shadow experiment
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- 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 aims to solve problems that a shadow experiment instrument in the prior art has a relatively complex structure and has difficulty in demonstrating influence of change of a shadow position on a shadow during physics teaching in middle and primary schools. The shadow experiment instrument comprises a foundation and a support seat arranged on the foundation, wherein the support seat is provided with a support, the support is provided with a rocking arm, the rocking arm rotates by taking one end of the rocking arm itself as a center, a free end of the rocking arm is provided with a light source, and one side of the support seat on the foundation is provided with a shadow experiment barrier. According to the shadow experiment instrument, the light source arranged at the free end of the rocking arm is utilized, a position of the light source can be continuously changed through rotation of the rocking arm, a shape of a shadow of the shadow experiment barrier can be continuously changed and demonstrated, so a demonstration effect of the shadow experiment instrument is improved, and physics teaching progress is substantially promoted.
Description
Technical field
The utility model relates to teaching aid technical field, specifically, relates to a kind of shadow experiment instrument.
Background technology
Shadow is due to object, to have covered the propagation of light, can not form through opaque article compared with dark areas, be exactly the shadow that we often say, it is a kind of optical phenomena.The generation of shadow is because object has covered this principles of science of light, light in uniform dielectric of the same race along rectilinear propagation, can not form through opaque article compared with dark areas, the projection of formation is exactly the shadow that we often say.
When middle and primary schools' physics carries out shadow teaching, teacher need to demonstrate the impact of shadow formation the formation of shadow and light source position variation, and existing shadow experiment instrument one side structure is comparatively complicated, the impact that is difficult on the other hand shadow change in location to form shadow is demonstrated.
Utility model content
The utility model is when solving existing middle and primary schools physics teaching, and existing shadow experiment instrument on the one hand structure is comparatively complicated, and the problem that the impact that is difficult to that on the other hand shadow change in location is formed shadow is demonstrated, provides a kind of shadow experiment instrument.
The technical matters of the required solution of the utility model, can be achieved through the following technical solutions:
A kind of shadow experiment instrument, it is characterized in that, comprise: base, be arranged on the bearing on base, described bearing is provided with support, and described support is provided with rocking arm, and described rocking arm rotates centered by the one end of self, the free end of described rocking arm is provided with light source, and a side of described base upper bracket is provided with shadow experiment barrier.
In the utility model, described support comprises rack body and is positioned at the stent foot of rack body both sides, described rack body is provided with installation through hole, one end of described rocking arm is provided with installation plectane, a described circular fixed head pressure holding is carried out spacing to plectane is installed on installation plectane, the axis coinciding of described installation plectane and circular fixed head is also arranged in same rotating shaft, and described circular fixed head is fixed on rack body by set collar.
Described bearing is provided with stepper motor, and the motor shaft of described stepper motor is arranged on the axle center that plectane and circular fixed head are installed, and with motorized motions rocking arm, rotates.
The upper end of described two stands pin is equipped with formation switch, to carry out spacing to the rotation of rocking arm.
Described bearing is two, and two bearing intervals arrange, and the two stands pin of support is separately positioned on two bearings.
In the utility model, the free-ended light source of described rocking arm is LED lamp, to realize the illumination of high brightness and low energy consumption.
The free end of described rocking arm is provided with a crossbeam, and described LED lamp is fixed on crossbeam.
In the utility model, described base is box-like, comprises base upper cover and base lower cover, and described base upper cover buckles under base and covers.
Under described base, cover and be provided with power interface, in base lower cover, be provided with circuit for controlling motor, described base upper cover is provided with power switch and direction of motor rotation button.
Described circuit for controlling motor is provided with blocking-up protective device, to avoid that motor is caused to damage.
Shadow experiment instrument of the present utility model, the light source that utilizes rocking arm free end to arrange, by rocking arm, rotate the position that can continuously change light source, the shape of shadow experiment barrier shadow can convert demonstration continuously, promote the demonstration effect of shadow experiment instrument, can greatly promote the progress of physics teaching.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model support.
Fig. 3 is the structural representation of the circular fixed head of the utility model.
Fig. 4 is the structural representation of the utility model set collar.
Embodiment
In order to make technological means of the present utility model, creation characteristic, reach object and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Purport of the present utility model is, by in existing middle and primary schools Physics Learning process, the analysis of shadow experiment demonstration demand, structure is comparatively complicated on the one hand to find existing shadow experiment instrument, the problem that the impact that is difficult to that on the other hand shadow change in location is formed shadow is demonstrated, provides a kind of shadow experiment instrument to address the above problem by the utility model.
Referring to Fig. 1, shadow experiment instrument of the present utility model, comprise base, other assemblies of whole shadow experiment instrument are installed on base, in the utility model, adopted a kind of preferably mode, base comprises base lower cover 11 and base upper cover 12, and it is box-like that base is, base upper cover 12 buckles on base lower cover 11, can be used for taking in each assembly of shadow experiment instrument in base lower cover 11.
In present embodiment, base upper cover 12 is provided with bearing 2, bearing 2 is provided with support 3, support 3 comprises rack body 31 and is arranged on the stent foot 32 of rack body 31 both sides, for this reason, present embodiment is also provided with 2,2 bearings of 2 bearings, 2 intervals and arranges, and the two stands pin 32 of support 3 is separately positioned on two bearings 2.
In conjunction with Fig. 1 again referring to Fig. 2 to Fig. 4, in present embodiment, rack body 31 is provided with Rocker arm 4; Rocker arm 4 rotates centered by the one end of self; to achieve these goals; rack body 31 is provided with installs through hole 311; one end of Rocker arm 4 is provided with installs plectane 41; circular fixed head 5 pressure holdings are carried out spacing to plectane 41 is installed on installation plectane 41; axis coinciding that plectane 41 and circular fixed head 5 are installed is also arranged in same rotating shaft; circular fixed head 5 is fixed on rack body 31 by set collar 6 again, like this, can realize the rotation of Rocker arm 4.
In order to realize the automatic rotating of Rocker arm 4, stepper motor (being blocked by bearing 2, invisible) can also be set on bearing 2, the motor shaft of stepper motor is arranged on the axle center that plectane 41 and circular fixed head 5 are installed, to rotate by motorized motions Rocker arm 4.In addition, the upper end of two stands pin 32 is also provided with and forms switch 33, to carry out spacing to the rotation of Rocker arm 4.
In the utility model; the free end of Rocker arm 4 is provided with light source; light source is preferably and adopts LED lamp; to realize the illumination of high brightness and low energy consumption; adopted a kind of preferably mode in present embodiment, the free end of Rocker arm 4 first arranges a crossbeam 7, and LED lamp 8 is fixed on crossbeam 7 again; the fixing screw that can adopt of LED lamp is realized, so that the position of LED lamp 8 is regulated.One side of base upper cover 12 upper brackets 2 is provided with shadow experiment barrier 9, and like this, after LED lamp 8 is opened, along with the rotation of swing arm 4, continuous variation can occur experiment barrier 9 shadow shapes, and shadow experiment instrument has been obtained good demonstration effect.
In present embodiment; base lower cover 11 is provided with power interface (not illustrated); in base lower cover 11, be provided with circuit for controlling motor 111; base upper cover 12 is provided with power switch 121 and direction of motor rotation button 122; circuit for controlling motor 111 is also provided with blocking-up protective device (not illustrated), to avoid that motor is caused to damage.
Shadow experiment instrument of the present utility model, the light source that utilizes rocking arm free end to arrange, by rocking arm, rotate the position that can continuously change light source, the shape of shadow experiment barrier shadow can convert demonstration continuously, promote the demonstration effect of shadow experiment instrument, can greatly promote the progress of physics teaching.
Below only with regard to the utility model preferred embodiment, be described, but can not be interpreted as it is limitations on claims.The utility model is not only confined to above embodiment, and its concrete structure allows to change.In a word, all various variations of doing in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (10)
1. shadow experiment instrument, it is characterized in that, comprise: base, be arranged on the bearing on base, described bearing is provided with support, and described support is provided with rocking arm, and described rocking arm rotates centered by the one end of self, the free end of described rocking arm is provided with light source, and a side of described base upper bracket is provided with shadow experiment barrier.
2. shadow experiment instrument according to claim 1, it is characterized in that: described support comprises rack body and is positioned at the stent foot of rack body both sides, described rack body is provided with installation through hole, one end of described rocking arm is provided with installation plectane, one circular fixed head pressure holding is carried out spacing to plectane is installed on installation plectane, the axis coinciding of described installation plectane and circular fixed head is also arranged in same rotating shaft, and described circular fixed head is fixed on rack body by set collar.
3. shadow experiment instrument according to claim 2, is characterized in that: described bearing is provided with stepper motor, and the motor shaft of described stepper motor is arranged on the axle center that plectane and circular fixed head are installed.
4. shadow experiment instrument according to claim 2, is characterized in that: the upper end of described two stands pin is equipped with formation switch.
5. shadow experiment instrument according to claim 2, is characterized in that: described bearing is two, and two bearing intervals arrange, and the two stands pin of support is separately positioned on two bearings.
6. according to the arbitrary described shadow experiment instrument of claim 1 to 5, it is characterized in that: the free-ended light source of described rocking arm is LED lamp.
7. shadow experiment instrument according to claim 6, is characterized in that: the free end of described rocking arm is provided with a crossbeam, and described LED lamp is fixed on crossbeam.
8. shadow experiment instrument according to claim 6, is characterized in that: described base is box-like, comprises base upper cover and base lower cover, and described base upper cover buckles under base and covers.
9. shadow experiment instrument according to claim 6, is characterized in that: under described base, cover and be provided with power interface, in base lower cover, be provided with circuit for controlling motor, described base upper cover is provided with power switch and direction of motor rotation button.
10. shadow experiment instrument according to claim 9, is characterized in that: described circuit for controlling motor is provided with blocking-up protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556816.3U CN203406004U (en) | 2013-09-09 | 2013-09-09 | Shadow experiment instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320556816.3U CN203406004U (en) | 2013-09-09 | 2013-09-09 | Shadow experiment instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203406004U true CN203406004U (en) | 2014-01-22 |
Family
ID=49941928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320556816.3U Expired - Fee Related CN203406004U (en) | 2013-09-09 | 2013-09-09 | Shadow experiment instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203406004U (en) |
-
2013
- 2013-09-09 CN CN201320556816.3U patent/CN203406004U/en not_active Expired - Fee Related
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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: 20140122 Termination date: 20160909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |