CN220569305U

CN220569305U - Teaching demonstration frame

Info

Publication number: CN220569305U
Application number: CN202322251298.0U
Authority: CN
Inventors: 杨华
Original assignee: Individual
Current assignee: Individual
Priority date: 2023-08-21
Filing date: 2023-08-21
Publication date: 2024-03-08
Anticipated expiration: 2033-08-21

Abstract

The utility model belongs to the field of teaching demonstration, and provides a teaching demonstration frame which comprises a bottom plate and a semicircular cover, wherein the size of the semicircular cover is smaller than or equal to that of the bottom plate, a plane mirror is fixedly arranged on the upper surface of the bottom plate, the plane mirror is arranged at the central position of the bottom plate, the semicircular cover is made of transparent materials, a first magnet is arranged on the outer peripheral surface of the semicircular cover, and a flashlight is arranged on the inner peripheral surface of the semicircular cover; the utility model can be used for demonstrating the reflection of light by reflecting the light emitted by the flashlight by using the plane mirror, can clearly demonstrate the reflection law of the light, namely the principle that the reflection angle is equal to the incident angle, and can lead the path of the light to be visualized after the light is emitted from the flashlight, so that the student can see the path of the light after the light is reflected, and a magnet is magnetically matched with the flashlight, and can observe the reflection change of the light by adjusting the angle and the position of the flashlight, thereby better understanding and mastering the reflection law.

Description

Teaching demonstration frame

Technical Field

The utility model belongs to the field of teaching demonstration, and particularly relates to a teaching demonstration frame.

Background

Reflection of light refers to the process by which light rays change and rebound when they encounter a media interface. When light is directed from one medium to another, it interacts with the interface.

In the current class, the explanation of the reflection of light is usually spoken by a teacher and is used for assisting students to understand through blackboard writing on a blackboard or displaying videos in courseware, however, by means of the traditional teaching mode, the students often have difficulty in obtaining good learning effects without in-person experiments.

Although some light reflection demonstration instruments are available on the market, the instruments are generally expensive and have poor display effects.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a teaching demonstration stand for solving the problems that some light reflection demonstration instruments in the prior art are generally high in price, poor in display effect and the like.

The utility model provides a teaching demonstration frame, includes bottom plate and semicircle cover, semicircle cover size is less than or equal to the bottom plate, fixed surface installs the plane mirror on the bottom plate, the plane mirror is installed the central point of bottom plate puts, semicircle cover adopts transparent material preparation, semicircle cover outer peripheral face is provided with first magnet, semicircle cover inner peripheral face is provided with the flashlight, and the light that the flashlight sent is through plane mirror reflection, first magnet and flashlight correspond the setting, first magnet and flashlight magnetism are inhaled the cooperation.

Preferably, the upper surface of the bottom plate is fixedly connected with a base plate, and the base plate is fixedly provided with an angle gauge.

Preferably, the height of the backing plate is equal to the height of the plane mirror.

Preferably, the upper surface of the bottom plate is provided with a groove, a second magnet is arranged in the groove, a third magnet is arranged at the bottom of the semicircular cover, and the second magnet and the third magnet are in ferromagnetic attraction fit.

Preferably, the motor is fixedly installed in the installation box, the motor output end is fixedly connected with a connecting shaft, a first gear is fixedly connected to the peripheral side face of the connecting shaft, a second gear is meshed with the first gear, a rotating shaft is fixedly connected to the inside of the second gear, and the top of the rotating shaft is fixedly connected with the bottom plate.

Preferably, the first gear radius is smaller than the second gear radius.

Preferably, the device further comprises a smoke generator, a through hole is formed in the bottom plate, and the smoke generator is connected with the through hole through a pipeline.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model can be used for demonstrating the reflection of light by reflecting the light emitted by the flashlight by using the plane mirror, can clearly demonstrate the reflection law of the light, namely the principle that the reflection angle is equal to the incident angle, and can lead the path of the light to be visualized after the light is emitted from the flashlight, so that the student can see the path of the light after the light is reflected, and a magnet is magnetically matched with the flashlight, and can observe the reflection change of the light by adjusting the angle and the position of the flashlight, thereby better understanding and mastering the reflection law.

2. According to the utility model, the smoke generator is arranged, so that the smoke generator can generate smoke and enter the semicircular cover through the pipeline, when light rays emitted by the flashlight interact with particles of the smoke, the smoke particles can scatter the light rays, and students can clearly see the spreading and diffuse reflection phenomena of the light rays in the smoke.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the structure of the base plate of FIG. 1 according to the present utility model;

FIG. 3 is a schematic diagram of the front view of FIG. 1 according to the present utility model;

FIG. 4 is a schematic top view of the structure of FIG. 1 according to the present utility model;

FIG. 5 is a schematic view of the cross-sectional structure of FIG. 4 at A-A in accordance with the present utility model;

FIG. 6 is an enlarged view of a portion of the structure of FIG. 5A in accordance with the present utility model;

fig. 7 is a schematic structural diagram of a third embodiment of the present utility model.

In the figure:

1. a bottom plate; 11. a plane mirror; 2. a semi-circular cover; 21. a first magnet; 22. a flashlight; 3. a backing plate; 31. an angle gauge; 4. a second magnet; 5. a mounting box; 6. a motor; 61. a connecting shaft; 62. a first gear; 7. a second gear; 71. a rotating shaft; 8. a through hole; 81. a pipe; 82. a smoke generator.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model.

Embodiment one: as shown in fig. 1 to 6: the utility model provides a teaching demonstration frame which comprises a bottom plate 1 and a semicircular cover 2, wherein the size of the semicircular cover 2 is smaller than or equal to that of the bottom plate 1, a plane mirror 11 is fixedly arranged on the upper surface of the bottom plate 1, the plane mirror 11 is arranged at the central position of the bottom plate 1, the semicircular cover 2 is made of transparent materials, a first magnet 21 is arranged on the outer peripheral surface of the semicircular cover 2, a flashlight 22 is arranged on the inner peripheral surface of the semicircular cover 2, light rays emitted by the flashlight 22 are reflected by the plane mirror 11, the first magnet 21 and the flashlight 22 are correspondingly arranged, and the first magnet 21 and the flashlight 22 are in magnetic attraction fit.

The plane mirror 11 is used for reflecting the light rays emitted by the flashlight 22, so that the reflection law of the light rays, namely the principle that the reflection angle is equal to the incident angle, can be clearly shown, the students can see that the reflection angle and the incident angle on the plane mirror 11 are equal after the light rays are emitted from the flashlight 22, the paths of the light rays can be visualized, the students can see the paths of the light rays after the light rays are reflected, and a magnet is magnetically attracted to the flashlight 22 to be matched, and the reflection change of the light rays can be observed by adjusting the angle and the position of the flashlight 22, so that the reflection law can be better understood and mastered.

The upper surface of the bottom plate 1 is fixedly connected with a base plate 3, the base plate 3 is fixedly provided with a protractor 31, and the height of the base plate 3 is equal to that of the plane mirror 11, so that students can more intuitively observe the incident angle and the reflection angle of light.

The recess has been seted up to bottom plate 1 upper surface, installs second magnet 4 in the recess, and the third magnet is installed to semicircle cover 2 bottom, and second magnet 4 and the ferromagnetic suction cooperation of third magnetism when installing semicircle cover 2, only need aim at the second magnet 4 in the recess on bottom plate 1 with the third magnet of semicircle cover 2 bottom, can make semicircle cover 2 install on bottom plate 1 for semicircle cover 2's installation becomes more quick and convenient.

Embodiment two: on the basis of embodiment one, still include mounting box 5, mounting box 5 inside fixed mounting has motor 6, motor 6 output fixedly connected with connecting axle 61, connecting axle 61 week side fixedly connected with first gear 62, first gear 62 meshing has second gear 7, the inside fixedly connected with axis of rotation 71 of second gear 7, axis of rotation 71 top and bottom plate 1 fixed connection, motor 6 rotates and can drive bottom plate 1 and rotate, automated control has reduced manual operation, moreover can have better demonstration effect.

The radius of the first gear 62 is smaller than that of the second gear 7, the speed is reduced, the rotation is slower, and the student can observe better.

Embodiment III: as shown in fig. 7: on the basis of the first embodiment or the second embodiment, the multifunctional electric torch further comprises a smoke generator 82, the bottom plate 1 is provided with a through hole 8, the smoke generator 82 is connected with the through hole 8 through a pipeline 81, the smoke generator 82 generates smoke and enters the semicircular cover 2 through the pipeline 81, when light rays emitted by the electric torch 22 interact with particles of the smoke, the smoke particles scatter the light rays, and students can clearly see the spreading and diffuse reflection phenomena of the light rays in the smoke.

While embodiments of the present utility model have been shown and described above for purposes of illustration and description, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the utility model.

Claims

1. The utility model provides a teaching demonstration frame, includes bottom plate (1) and semicircle cover (2), its characterized in that: the size of the semicircular cover (2) is smaller than or equal to that of the base plate (1), a plane mirror (11) is fixedly arranged on the upper surface of the base plate (1), the plane mirror (11) is arranged at the central position of the base plate (1), the semicircular cover (2) is made of transparent materials, a first magnet (21) is arranged on the outer peripheral surface of the semicircular cover (2), a flashlight (22) is arranged on the inner peripheral surface of the semicircular cover (2), light rays emitted by the flashlight (22) are reflected by the plane mirror (11), the first magnet (21) and the flashlight (22) are correspondingly arranged, and the first magnet (21) and the flashlight (22) are in magnetic attraction fit.

2. A teaching demonstration stand as claimed in claim 1, wherein: the upper surface of the bottom plate (1) is fixedly connected with a base plate (3), and an angle gauge (31) is fixedly arranged on the base plate (3).

3. A teaching demonstration stand as claimed in claim 2, wherein: the height of the base plate (3) is equal to the height of the plane mirror (11).

4. A teaching demonstration stand as claimed in claim 1, wherein: the upper surface of the bottom plate (1) is provided with a groove, a second magnet (4) is arranged in the groove, a third magnet is arranged at the bottom of the semicircular cover (2), and the second magnet (4) and the third magnet are in ferromagnetic attraction fit.

5. A teaching demonstration stand as claimed in any one of claims 1 to 4, wherein: still including install bin (5), install bin (5) inside fixed mounting has motor (6), motor (6) output fixedly connected with connecting axle (61), connecting axle (61) week side fixedly connected with first gear (62), first gear (62) meshing has second gear (7), inside fixedly connected with axis of rotation (71) of second gear (7), axis of rotation (71) top and bottom plate (1) fixed connection.

6. A teaching demonstration stand as claimed in claim 5, wherein: the first gear (62) has a smaller radius than the second gear (7).

7. A teaching demonstration stand as claimed in any one of claims 1 to 4, wherein: the smoke generator is characterized by further comprising a smoke generator (82), a through hole (8) is formed in the bottom plate (1), and the smoke generator (82) is connected with the through hole (8) through a pipeline (81).