CN215495700U

CN215495700U - Globe capable of demonstrating length change of day and night

Info

Publication number: CN215495700U
Application number: CN202121718829.7U
Authority: CN
Inventors: 文爱兵
Original assignee: Huzhou wuxing experimental middle school
Current assignee: Huzhou wuxing experimental middle school
Priority date: 2021-07-27
Filing date: 2021-07-27
Publication date: 2022-01-11
Anticipated expiration: 2031-07-27

Abstract

The utility model relates to the technical field of teaching demonstration tools, in particular to a globe capable of demonstrating length change of day and night, which comprises a base, a bracket, a sphere device and an illumination device, wherein the bracket is arranged on the base; the sphere device is nested and slides in the bracket and can be arranged in a self-rotating way; the illuminating device is arranged in the ball body device to illuminate the ball body device, so that the ball body device forms a light surface and a dark surface; the illumination device can limit the rotation of the sphere device, and the utility model is beneficial to more intuitively demonstrating the phenomenon of day and night length change caused by the regular change of the solar altitude at noon.

Description

Globe capable of demonstrating length change of day and night

Technical Field

The utility model relates to the technical field of teaching demonstration tools, in particular to a globe capable of demonstrating length change of day and night.

Background

The earth moves around the sun, one period of a year, because the included angle between the ecliptic plane and the equatorial plane is 23 degrees and 26 degrees, the direct solar radiation point swings back and forth between the return line of south China and the return line of north China on the earth, so that the direct solar radiation is directly radiated at different positions of the earth, the change of the earth all the year round is generated, and because the earth rotates, one period of a day and night alternate, because the earth is spherical, for different latitude areas on the earth, the day and night of the same day under the same solar term are different, such as the day and night of the northern hemisphere in the summer half year, the extreme day phenomenon occurs in the northern area, the day and night of the southern hemisphere are long, the extreme night phenomenon occurs in the Antarctic area, and the day and night of the equatorial area are equally divided all the year round; however, in the teaching process, the existing tellurian, three-globe and other instruments cannot intuitively demonstrate the change of the day and night length of the earth and the change of the solar altitude at noon all the year round, and understanding and mastering of knowledge in the aspect are very difficult.

The utility model with the Chinese patent application number of CN200520111416.7 discloses an earth movement demonstration instrument which can directly display the length of day and night in a certain place at a certain time and the height of the sun at noon and indirectly determine the sunrise and sunset time. The annular bracket is fixed on the base, the earth shell is connected with the annular bracket, and the axis of the rotating shaft and the perpendicular bisector form an intersection angle of 23 degrees and 26 degrees; the night hemisphere casing is connected with the annular support through the limiting support, the sliding handle and the auxiliary support and is sleeved outside the earth casing, two ends of the semi-annular dial are fixed on the night hemisphere casing, and the parallel light marks are fixed on the 90-degree position of the semi-annular dial. The seasonal change of the earth in the year formed by rotation and revolution is converted into the regular change of the altitude of the sun in the morning and evening and at noon, the time of day and night in each part of the whole year, the altitude of the sun in the noon and the noon can be directly displayed, the sunrise and sunset time in each place in a certain latitude can be indirectly determined, and the extreme day or the extreme night range in the two polar regions at a certain time in the whole year can be directly displayed. Simple structure, strong intuition and complete functions.

For the convenience of demonstration, the spheroid is often just rotated very easily, but the device is when carrying out the demonstration of specific position and depositing, and the earth's casing is difficult to carry out spacing, and then leads to this equipment demonstration not directly perceived to can reduce the life of equipment.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems, the utility model provides a globe capable of demonstrating the change of the length of day and night, which simulates the rotation and revolution of the earth through the rotation of a C-shaped frame and the rotation of a sphere, the adjusted sphere is fixed through a limiting mechanism, and an illumination mechanism irradiates simulated illumination inside the sphere, so that the globe is beneficial to more intuitively demonstrating the phenomenon of the change of the length of day and night caused by the regular change of the solar altitude at noon.

In order to achieve the purpose, the utility model provides the following technical scheme:

the utility model provides a can demonstrate tellurion of length change round clock, includes the base and installs support on the base, its characterized in that includes: a ball device; and an illumination device;

the sphere device is nested and slides in the bracket and can be arranged in a self-rotating way; the illumination device is arranged in the sphere device to illuminate the sphere device, so that the sphere device forms a light surface and a dark surface; and the light device can limit the rotation of the sphere device.

As an improvement, the ball device comprises a C-shaped frame which is arranged in the support in a sliding mode, a ball which is installed in the C-shaped frame in a rotating mode, and a handle which is installed on the side face of the C-shaped frame and can drive the C-shaped frame.

As an improvement, under the driving action of the C-shaped frame, the sphere rotating shaft is continuously and rotatably arranged on two sides in the vertical direction, and the rotating angle of the sphere rotating shaft is α, α =23 ° 26.

As an improvement, the sphere is arranged in a hollow light-permeable mode.

As an improvement, the illumination device comprises an illumination mechanism which enables the sphere to be in a bright and dark partition and a limiting mechanism which is used for limiting the rotation of the sphere.

As an improvement, the illumination mechanism comprises a light screen arranged in the sphere and in sliding fit with the inner wall of the sphere, an illumination unit positioned on one side of the light screen, and a fixing frame arranged at the top of the support and in sliding fit with the outer surface of the sphere, wherein the light screen is connected with the fixing frame through a magnet unit in an adsorption manner.

As a refinement, the plane of the shading plate is arranged vertically.

As an improvement, the outer diameter of the shutter plate is adapted to the maximum inner diameter of the sphere.

As an improvement, the limiting mechanism comprises two groups of limiting rods which are elastically arranged on the fixing frame in a sliding manner up and down and can be abutted against the ball body, a driving piece which drives the two groups of limiting rods to move up and down, a vertical rod arranged at the bottom of the driving piece, and a mounting hole which is arranged on the support and is matched with the vertical rod in an inserting manner; the bottom of the vertical rod and the mounting hole are arranged in an adsorbable mode through the magnet unit.

The utility model has the beneficial effects that:

(1) the sphere is rotatably arranged in the C-shaped frame, and the C-shaped frame is slidably arranged in the bracket, so that the deflection of the sphere can be better realized, and the deflection posture of the sphere of the globe is presented;

(2) the shading plate is arranged in the sphere through the fixing frame, and one side of the shading plate is provided with the illumination units which can enable the sphere to be light and dark, so that the sunlight irradiation is simulated under the condition of no need of an external light source, and the daytime and the night can be quickly, simply, conveniently and visually displayed;

(3) when the limiting mechanism is disengaged from the ball body, the ball body can freely rotate to adjust the posture; when stop gear contacted with the spheroid, the spheroid was spacing state, can more audio-visually carry out the demonstration of specific position to do benefit to depositing of this instrument.

In conclusion, the utility model has the advantages of simple structure, ingenious design, intuitive demonstration, easy storage and the like, and is particularly suitable for geographical teaching of schools.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of FIG. 1 at A;

FIG. 3 is an enlarged view of FIG. 1 at B;

FIG. 4 is a schematic view of a light shielding plate;

FIG. 5 is a side view of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Examples

As shown in fig. 1, a globe capable of demonstrating variation in length between day and night, comprising a base 1 and a support 2 mounted on the base 1, characterized by comprising: a sphere device 3; and an illumination device 4;

the sphere device 3 is nested and slides in the bracket 2, and the sphere device 3 can be arranged in a self-rotating way; the illumination device 4 is arranged in the sphere device 3 to illuminate the sphere device 3, so that the sphere device 3 forms a light surface and a dark surface; and the light means 4 can limit the rotation of the sphere means 3.

Further, as shown in fig. 1 to 3, the sphere device 3 includes a C-shaped frame 31 slidably disposed in the support 2, a sphere 32 rotatably mounted in the C-shaped frame 31, and a handle 33 mounted on a side of the C-shaped frame 31 and driving the C-shaped frame 31.

Further, as shown in fig. 5, under the driving action of the C-shaped frame 31, the rotating shaft of the ball 32 is continuously rotatably disposed at both sides in the vertical direction, and the rotating angle of the rotating shaft of the ball 32 is α, α =23 ° 26'.

The rotation of the C-shaped frame 31 simulates the revolution of the earth, and the rotation of the sphere 32 in the C-shaped frame 31 simulates the rotation of the earth.

It should be further noted that the rotation angle α of the rotation shaft of the sphere 32 simulates the return line from north to south.

Further, the sphere 32 is hollow and light-permeable.

Further, as shown in fig. 4, the illumination device 4 includes an illumination mechanism 41 for making the sphere 32 be a bright-dark section, and a limiting mechanism 42 for limiting the rotation of the sphere 32.

Further, the illumination mechanism 41 includes a light shielding plate 411 disposed in the sphere 32 and in sliding fit with the inner wall of the sphere 2, an illumination unit 412 located on one side of the light shielding plate 411, and a fixing frame 413 mounted on the top of the support 2 and in sliding fit with the outer surface of the sphere 32, wherein the light shielding plate 411 and the fixing frame 413 are connected by a magnet unit in an adsorption manner.

Further, as shown in fig. 4, the outer diameter of the light shielding plate 411 is adapted to the maximum inner diameter of the sphere 32.

It should be noted that the illumination unit 412 is preferably an LED light source, and the switch of the illumination unit can be controlled by an external remote control device.

More specifically, the light unit 412 emits a light source to illuminate the sphere 32, and the corresponding positions of the sphere 32 and the edge of the light shielding plate 411 can visually simulate a morning and evening line; and the light shielding plate 411 is kept fixed during the rotation of the sphere 32.

Further, the plane of the light shielding plate 411 is vertically disposed.

Further, as shown in fig. 2, the limiting mechanism 42 includes two sets of limiting rods 421 that are elastically slidably disposed on the fixing frame 413 up and down and can be abutted against the ball 32, a driving member 422 that drives the two sets of limiting rods 421 to move up and down, a vertical rod 423 disposed at the bottom of the driving member 422, and a mounting hole 424 that is disposed on the support 2 and is in insertion fit with the vertical rod 423; the bottom of the vertical rod 423 and the mounting hole 424 are arranged in an adsorbable mode through a magnet unit.

It should be noted that, when the limiting rod 421 contacts the sphere 32, the sphere 32 is difficult to rotate, so that the situation that a certain point is illuminated can be visually displayed, and when the instrument is stored, the sphere 32 does not shake, so that the service life of the device is prolonged.

Working process

The handle 33 is grasped to rotate the C-shaped frame 31, so that the rotating shaft of the sphere 32 is in a vertical state, parallel light of the simulated sun is directly irradiated to the equator, the sphere 32 is rotated, and the day and night of the north and south hemispheres are observed to be the same in length;

the C-shaped frame 31 is rotated by 23 degrees 26' towards the inner side of the support 2 by holding the handle 33, at the moment, the direct return line of the sunlight is simulated, the sphere 32 is rotated, and the difference of the day and night of the north and south hemispheres is observed, the day and night of the north hemisphere are short, the extreme day of the north polar circle is short, and the extreme night of the south polar circle is short;

the C-shaped frame 31 is rotated by 23 degrees 26' towards the outer side of the support 2 by holding the handle 33, direct sunlight is simulated, a south return line is simulated, the sphere 32 is rotated, and the different lengths of the day and night of the south and north hemispheres are observed, the day and night of the north hemispheres are long, the day and night of the south polar circle are long, and the day and night of the north polar circle are long.

Claims

1. The utility model provides a can demonstrate tellurion of day and night length change, includes base (1) and installs support (2) on base (1), its characterized in that includes:

a ball device (3); and

an illumination device (4);

the sphere device (3) is nested and slides in the bracket (2) and the sphere device (3) can be arranged in a self-rotating way; the illumination device (4) is arranged in the sphere device (3) to illuminate the sphere device (3), so that the sphere device (3) forms a light surface and a dark surface; and the illumination device (4) can limit the rotation of the sphere device (3).

2. A globe capable of demonstrating variation in length of day and night according to claim 1, characterized in that the sphere device (3) comprises a C-shaped frame (31) slidably disposed in the frame (2), a sphere (32) rotatably installed in the C-shaped frame (31), and a handle (33) installed at a side of the C-shaped frame (31) and driving the C-shaped frame (31).

3. A globe capable of demonstrating variation in length of day and night according to claim 2, characterized in that the rotation axis of the sphere (32) is continuously rotatably provided at both sides in the vertical direction by the driving of the C-shaped frame (31), and the rotation angle of the rotation axis of the sphere (32) is α, α =23 ° 26'.

4. The globe capable of demonstrating variation in length of day and night as claimed in claim 2, wherein the sphere (32) is hollow and light permeable.

5. A globe demonstrating variation in length of day and night according to claim 2, characterized in that the light means (4) comprises a light mechanism (41) making the sphere (32) to be a bright-dark section and a limit mechanism (42) for limiting the rotation of the sphere (32).

6. The globe capable of demonstrating the change of length of day and night according to claim 5, wherein the light mechanism (41) comprises a light shielding plate (411) arranged in the sphere (32) and slidably engaged with the inner wall of the sphere (32), a light unit (412) located at one side of the light shielding plate (411), and a fixing frame (413) installed at the top of the support (2) and slidably engaged with the outer surface of the sphere (32), wherein the light shielding plate (411) and the fixing frame (413) are connected through a magnet unit in an adsorption manner.

7. A globe demonstrating the variation of length of day and night according to claim 6, characterized in that the plane of the light screen (411) is vertically arranged.

8. A globe according to claim 6, characterized in that the outer diameter of the light screen (411) is adapted to the largest inner diameter of the sphere (32).

9. The globe capable of demonstrating the length change of day and night according to the claim 6, characterized in that the limiting mechanism (42) comprises two sets of limiting rods (421) which are elastically and slidably arranged on the fixing frame (413) up and down and can be abutted against the ball body (32), a driving member (422) which drives the two sets of limiting rods (421) to move up and down, a vertical rod (423) which is arranged at the bottom of the driving member (422), and a mounting hole (424) which is arranged on the support (2) and is in insertion fit with the vertical rod (423); the bottom of the vertical rod (423) and the mounting hole (424) are arranged in an adsorbable mode through a magnet unit.