CN218447056U

CN218447056U - Globe convenient for demonstrating day and night alternation, day and night length change and four-season change

Info

Publication number: CN218447056U
Application number: CN202221294069.6U
Authority: CN
Inventors: 张建同; 张子路
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2023-02-03
Anticipated expiration: 2032-05-26

Abstract

The utility model discloses a globe convenient for demonstrating day and night alternation, day and night length change and four seasons change, which comprises an earth body, a bracket, a base, a handle, a light screen, a direct sunlight indicator, a gear transmission mechanism, a lighting lamp and a switch; the bracket is arranged on the base, the upper end and the lower end of the bracket are respectively provided with a coaxial clamping shaft, and the earth body is rotatably clamped on the clamping shafts; the handle rotates and installs on the base, is equipped with the direct sunlight indicator on the handle, and the light screen rotates to be located this internal, and the vertical setting of axis of rotation of light screen, handle and light screen pass through gear drive and link to each other in order to drive the light screen and rotate, are equipped with the light on the light screen, and the light links to each other with the switch. The device can correctly and clearly demonstrate the morning and evening lines (coils), can dynamically demonstrate the phenomena of four-season change, day and night alternation and length change, enables students to easily understand the principle and master related geographical knowledge deeply, and has the advantages of simple structure, low cost, convenient processing and manufacture and strong practicability.

Description

Globe convenient for demonstrating day and night alternation, day and night length change and four-season change

Technical Field

The utility model belongs to the technical field of the globe technique and specifically relates to a globe convenient to demonstrate round the clock in turn, round the clock length change and four seasons change.

Background

The globe is a model of the earth, which is made by imitating the shape of the earth and reducing the globe according to a certain proportion, in order to facilitate the understanding of the earth. The traditional globe has a single function, generally cannot clearly demonstrate the change of day and night and the change of length of day and night or the change of four seasons on the earth, cannot distinguish the morning and night line basically under a natural light source, cannot see a clear and stable morning and night line even by an external strong light source, and particularly, students cannot understand the phenomenon of global day and night bisection when the sun shines directly on the equator, so that improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model aims at providing a globe convenient to demonstrate round the clock is alternative, round the clock length change and four seasons change.

The technical scheme of the utility model as follows: a globe convenient for demonstrating day and night alternation, day and night length change and four-season change is characterized by comprising an earth body, a bracket, a base, a handle, a light screen, a direct sunlight indicator, a gear transmission mechanism, a lighting lamp and a switch;

the support is arranged on the base and is a C-shaped support, the upper end and the lower end of the support are respectively provided with a coaxial clamping shaft, the axis of the clamping shaft is arranged in an inclined manner, the north pole and the south pole of the earth body are respectively provided with a clamping hole, and the earth body is rotatably clamped on the clamping shafts through the clamping holes;

the handle is rotatably installed on the base, the rotating axis of the handle is vertically arranged, the handle is provided with the direct sunlight indicator, the light screen is rotatably arranged in the earth body, the rotating axis of the light screen is vertically arranged, the handle is connected with the light screen through the gear transmission mechanism to drive the light screen to rotate, the light screen is provided with the illuminating lamp, and the illuminating lamp is connected with the switch.

Furthermore, the direct solar radiation indicator is a laser lamp, a vertical supporting shaft is arranged on the handle, a sleeve is arranged on the supporting shaft, and the laser lamp is clamped in the sleeve.

Further, the switch is a remote control switch.

Further, the gear transmission mechanism comprises an outer transmission mechanism, an inclined shaft and an inner transmission mechanism;

the outer transmission mechanism is arranged on the base and comprises an outer gear box, an outer driving gear, an outer driven gear, an outer transmission gear and a first helical gear; the outer gear box is fixedly connected with the base, the outer driving gear and the outer driven gear are rotatably arranged in the outer gear box, the handle is fixedly connected with the outer driving gear, a plurality of outer transmission gears are arranged between the outer driven gear and the outer driving gear, and the gear shaft of the outer driven gear is also provided with the first bevel gear;

the inner transmission mechanism is arranged in the globe body and comprises an inner gear box, an inner driving gear, an inner driven gear, an inner transmission gear and a second helical gear; the inner gear box is fixedly connected with the clamping shaft at the lower end, the inner driving gear and the inner driven gear are rotatably arranged in the inner gear box, a plurality of inner driving gears are arranged between the inner driven gear and the inner driving gear, the second bevel gear is also arranged on a gear shaft of the inner driving gear, the shading plate is provided with a rotating shaft, and the rotating shaft is connected with a gear shaft of the inner driven gear;

the oblique shaft is rotatably arranged in the clamping shaft at the lower end in a penetrating mode, the lower end of the oblique shaft extends into the outer gear box, the upper end of the oblique shaft extends into the inner gear box, a third oblique gear is arranged at the lower end of the oblique shaft, a fourth oblique gear is arranged at the upper end of the oblique shaft, the third oblique gear is meshed with the first oblique gear, and the fourth oblique gear is meshed with the second oblique gear.

Further, the part of the shading plate lower than the inner gear box is cut into shading cloth strips which can freely move one by one.

Compared with the prior art, the beneficial effects of the utility model are as follows:

the device can accurately and clearly demonstrate morning and evening lines (coils), can dynamically demonstrate the phenomena of four-season change, day-night alternation and length change, enables students to easily understand the principle of day-night alternation, length change and four-season change, and deeply masters relevant geographical knowledge.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work:

fig. 1 is an external schematic view of the present invention;

fig. 2 is an internal schematic view of the present invention.

Reference numerals:

1. an earth body; 2. a support; 3. clamping a shaft; 4. a base; 5. a handle; 6. a visor; 7. a direct solar radiation indicator; 8. a gear transmission mechanism; 9. a lighting lamp; 10. a support shaft; 11. an outer gear case; 12. an outer driving gear; 13. an outer driven gear; 14. an outer drive gear; 15. a first helical gear; 16. a light-shielding cloth strip; 17. an inner gear case; 18. an inner driving gear; 19. an inner driven gear; 20. an inner drive gear; 21. a second helical gear; 22. an oblique axis; 23. a third helical gear; 24. a fourth helical gear.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "vertical", "circumferential", "radial", "axial", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may include, for example, fixed connections, detachable connections, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The globe convenient for demonstrating the alternation of day and night, the length change of day and night and the change of four seasons as shown in figures 1-2 comprises an earth body 1, a bracket 2, a base 4, a handle 5, a light screen 6, a direct sunlight indicator 7, a gear transmission mechanism 8, a lighting lamp 9 and a switch;

on base 4 was located to support 2, support 2 was C font support 2, and the upper and lower both ends of support 2 are equipped with coaxial card axle 3 respectively, and the axis slope of card axle 3 sets up, and the north pole and the south pole of earth body 1 are equipped with the card hole respectively, and earth body 1 rotationally blocks on card axle 3 through the card hole, and the axis of two card axles 3 has constituted the slope earth's axis of earth rotation from this. The above is a simple introduction to the original structure of the globe, and the description is omitted because it is the same as the prior art.

The handle 5 rotates to be installed on base 4, and the rotation axis of handle 5 sets up vertically, is equipped with direct sunlight indicator 7 on the handle 5, and direct sunlight indicator 7 is used for instructing the direct point of sun. In practical application, direct solar radiation indicator 7 can be the laser lamp, is equipped with vertical back shaft 10 on the handle 5, is equipped with the sleeve pipe on the back shaft 10, and the laser lamp card is established in the sleeve pipe, and this kind of structural style is simple, is convenient for realize.

As shown in fig. 2, light screen 6 rotates and locates in earth body 1, the vertical setting of axis of rotation of light screen 6, handle 5 links to each other in order to drive light screen 6 with light screen 6 through gear 8 and rotates, be equipped with light 9 on the light screen 6, light 9 links to each other with the switch, particularly, the rechargeable LED lamp of light 9, the switch is remote switch, press the switch back, light 9 can give out light, under sheltering from of light screen 6, just can form half bright half dark demonstration effect of half on the globe body, can see very clear audio-visual morning and evening line in the vision, rotate earth body 1 simulation earth rotation, twist grip 5 drives light screen 6 and rotates, alright demonstration four seasons change, day and night length changes and the position change condition etc. of the straight shooting point of sun.

In the scheme, because the ground axis and the rotating shaft of the light screen 6 are not collinear, how to ensure that the ground axis and the rotating shaft of the light screen 6 can work independently and do not interfere with each other is difficult on the premise of ensuring the rotation of the globe, and the hemisphere illuminated by the light can be changed through the rotation of the light screen 6 in the globe. Based on this, this scheme adopts gear drive's scheme to solve the rotation problem of light screen 6.

Specifically, as shown in fig. 2, the gear transmission mechanism 8 includes an outer transmission mechanism, an inclined shaft 22, and an inner transmission mechanism; the outer transmission mechanism is arranged on the base 4 and comprises an outer gear box 11, an outer driving gear 12, an outer driven gear 13, an outer transmission gear 14 and a first bevel gear 15; the outer gear box 11 is fixedly connected with the base 4, the outer driving gear 12 and the outer driven gear 13 are rotatably arranged in the outer gear box 11, the handle 5 is fixedly connected with the outer driving gear 12, a plurality of outer transmission gears 14 are arranged between the outer driven gear 13 and the outer driving gear 12, and a first helical gear 15 is further arranged on a gear shaft of the outer driven gear 13;

the inner transmission mechanism is arranged in the globe body and comprises an inner gear box 17, an inner driving gear 18, an inner driven gear 19, an inner driving gear 20 and a second bevel gear 21; the inner gear box 17 is fixedly connected with the clamping shaft 3 at the lower end, the inner driving gear 18 and the inner driven gear 19 are rotatably arranged in the inner gear box 17, a plurality of inner driving gears 20 are arranged between the inner driven gear 19 and the inner driving gear 18, a second bevel gear 21 is also arranged on a gear shaft of the inner driving gear 18, a rotating shaft is arranged on the shading plate 6 and is connected with a gear shaft of the inner driven gear 19;

the inclined shaft 22 is rotatably arranged in the clamping shaft 3 at the lower end in a penetrating mode, the lower end of the inclined shaft 22 extends into the outer gear box 11, the upper end of the inclined shaft 22 extends into the inner gear box 17, the lower end of the inclined shaft 22 is provided with a third inclined gear 23, the upper end of the inclined shaft is provided with a fourth inclined gear 24, the third inclined gear 23 is meshed with the first inclined gear 15, and the fourth inclined gear 24 is meshed with the second inclined gear 21.

Referring to fig. 2, after the handle 5 is rotated, the handle 5 drives the outer driving gear 12 to rotate, the outer driving gear 12 drives the outer driven gear 13 to rotate after being transmitted by the plurality of outer transmission gears 14, the first helical gear 15 rotates along with the outer driven gear 13, and then drives the third helical gear 23 to rotate, so that the helical shaft 22 can be driven to rotate. After the inclined shaft 22 rotates, the second helical gear 21 is driven to rotate by meshing of the fourth helical gear 24 and the second helical gear 21, and finally, the light screen 6 is driven to vertically rotate after the transmission of the inner driving gear 18, the plurality of inner driving gears 20 and the inner driven gear 19, so that the light screen 6 and the earth body 1 do not influence each other in rotation.

Further, since the internal gear box 17 is not rotated, in order to avoid interference between the light shielding plate 6 and the internal gear box 17, the portions of the light shielding plate 6 lower than the internal gear box 17 can be cut into the light shielding cloth strips 16 which can freely move one by one, thereby playing a light shielding role and not influencing the rotation of the light shielding plate 6.

In actual manufacturing, in order to facilitate installation of the components such as the light shading plate 6, the inner gear box 17, the illuminating lamp 9 and the like, the sphere of the globe and the support 2 can be sawn into two equal parts, then two hemispheres are glued, and the globe support 2 is connected through screws.

In this scheme, in order to ensure that the pivot of light screen 6 can be stable rotatory, be equipped with curved connecting strip on the upper end card axle 3, be equipped with vertical pivotal axis on the connecting strip, the upper end of 6 pivots of light screen is equipped with the pivot hole, and the pivot is inserted in the pivot hole, and the location all can be realized at the upper and lower both ends of the pivot of light screen 6 from this.

In this scheme, in order to ensure that light screen 6 and handle 5 can synchronous rotation, namely, the direction of rotation and the angle of light screen 6 and handle 5 are the same, gear transmission 8's whole drive ratio should be 1, what gear transmission 8 played like this is only the effect of the direction of transfer of change power, so in concrete setting, can set the number of teeth of two helical gears on the skew axis 22 to the same simply, again with gear number and the gear number of teeth in outer drive mechanism and the interior drive mechanism also all set to the same, this kind of mode is simple direct, after handle 5 anticlockwise rotation a week, light screen 6 also can anticlockwise rotation a week, of course also can adopt other modes to realize the drive ratio and be 1, here is no longer described repeatedly.

During specific demonstration, a certain position can be assumed as the right-looking position of the earth, then the handle 5 is rotated anticlockwise, and the change of the four seasons and the change of the length of day and night can be demonstrated by illuminating the position of half of the ball through light in the ball. The handle 5 is provided with a direct solar indicator 7, so that the specific position of the direct solar can be demonstrated. The switch is pressed to turn on the ball interior illumination lamp 9, and the illuminated part is used for simulating the part illuminated by the sun. The rotating sphere simulates the rotation of the earth and visible distinct morning and evening lines (circles). Then the handle 5 is rotated anticlockwise for one circle to demonstrate the change of four seasons, the change of day and night length, the change of the position of the direct sun shooting point and the like.

In conclusion, the device can accurately and clearly demonstrate the morning and evening lines (coils), can dynamically demonstrate the phenomena of four-season change, day-night alternation and length change, enables students to easily understand the principles of the day-night alternation, the length change and the four-season change and master related geographical knowledge deeply, and has the advantages of simple structure, low cost, convenient processing and manufacture and strong practicability.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A globe convenient for demonstrating day and night alternation, day and night length change and four seasons change is characterized by comprising a globe body, a support, a base, a handle, a light shading plate, a direct sunlight indicator, a gear transmission mechanism, a lighting lamp and a switch;

the handle rotates and installs on the base, the vertical setting of axis of rotation of handle, be equipped with on the handle direct sunlight indicator, the light screen rotates to be located in the earth body, the vertical setting of axis of rotation of light screen, the handle with the light screen passes through gear drive mechanism links to each other in order to drive the light screen rotates, be equipped with on the light screen the light, the light with the switch links to each other.

2. A globe convenient for demonstrating round-the-clock alternation, round-the-clock length change and four seasons change as claimed in claim 1, wherein the direct solar radiation indicator is a laser lamp, a vertical supporting shaft is arranged on the handle, a sleeve is arranged on the supporting shaft, and the laser lamp is clamped in the sleeve.

3. The globe convenient for demonstrating the alternation of day and night, the change of length of day and night, and the change of four seasons as claimed in claim 1, wherein the illuminating lamp is a rechargeable LED lamp, and the switch is a remote switch.

4. The globe convenient for demonstrating the alternation of day and night, the change in length of day and night, and the change in four seasons as claimed in claim 1, wherein the gear transmission mechanism comprises an outer transmission mechanism, an inclined shaft, and an inner transmission mechanism;

the outer transmission mechanism is arranged on the base and comprises an outer gear box, an outer driving gear, an outer driven gear, an outer transmission gear and a first helical gear; the outer gear box is fixedly connected with the base, the outer driving gear and the outer driven gear are rotatably arranged in the outer gear box, the handle is fixedly connected with the outer driving gear, a plurality of outer transmission gears are arranged between the outer driven gear and the outer driving gear, and a gear shaft of the outer driven gear is also provided with the first helical gear;

the inner transmission mechanism is arranged in the globe body and comprises an inner gear box, an inner driving gear, an inner driven gear, an inner transmission gear and a second bevel gear; the inner gear box is fixedly connected with the clamping shaft at the lower end, the inner driving gear and the inner driven gear are rotatably arranged in the inner gear box, a plurality of inner driving gears are arranged between the inner driven gear and the inner driving gear, the second bevel gear is also arranged on a gear shaft of the inner driving gear, the shading plate is provided with a rotating shaft, and the rotating shaft is connected with a gear shaft of the inner driven gear;

the bevel shaft is rotatably arranged in the clamping shaft at the lower end in a penetrating manner, the lower end of the bevel shaft extends into the outer gear box, the upper end of the bevel shaft extends into the inner gear box, a third bevel gear is arranged at the lower end of the bevel shaft, a fourth bevel gear is arranged at the upper end of the bevel shaft, the third bevel gear is meshed with the first bevel gear, and the fourth bevel gear is meshed with the second bevel gear.

5. The globe facilitating demonstration of the alternation of day and night, the change in length of day and night, and the change in four seasons as claimed in claim 4, wherein a portion of the shade plate lower than the inner gear case is cut with a shade cloth strip capable of freely moving one by one.