Astronomical globe

Abstract

The utility model discloses an astronomical globe capable of simulating four-season replacement and day and night change, which comprises an inner shaft positioned in a globe body, a light insulation piece and an inner driving device for driving the light insulation piece to rotate, the inner driving device comprises a shell, a rotating part and an inner driving unit, the rotating part is rotatably arranged on the shell, and the inner driving unit is arranged in the shell. The inner driving unit is positioned in the shell and is in transmission connection with the rotating part; the inner shaft penetrates through the inner driving device from the axial direction; the shell is fixed on the inner shaft; and the rotating part is connected with the light insulation part. The astronomical tellurion overcomes the defect that various astronomical scenes cannot be displayed on a common tellurion, the tellurion becomes a science popularization instrument integrating astronomy and geography, the structure is simple, the operation is convenient, the defect that the common tellurion cannot reflect illumination scenes in the universe is made up, and the application prospect is wide. The globe is a brand-new teaching and science popularization globe with more scientific significance, is particularly suitable for being used in teaching, and is more convenient to install.

Description

TECHNICAL FIELD

[0001] The utility model relates to a globe, in particular to an astronomical globe which can simulate the alternation of four seasons and the change of day and night. BACKGROUND

[0002] The traditional globe can only display geographical patterns on the surface, and the function is relatively single. In science in primary and secondary schools, the globe and related knowledge are an important content. The globe can well reflect the geographical distribution on the earth, and students can easily intuitively see various geographical conditions on the earth. To learn this part of knowledge well, it is best to enable students to intuitively see the day and night scene on the globe.

[0003] In order to show the astronomical scene of the earth in the universe, teachers have made various auxiliary teaching aids. The designs reflecting the day and night of the earth are often seen in the design of experimental instruments and teaching aids in science and technology competitions. Some designs are very complex, and some have added many accessories. Although a certain effect is achieved, there is no breakthrough improvement. The ordinary globe cannot show the day and night scene caused by astronomical reasons in the universe, such as the length of day and night in different places, the change of four seasons, the polar day and night phenomenon, etc. Students can only learn this part of knowledge by imagination, and it is difficult to master this part of content.

[0004] In order to simulate the alternation of four seasons and the change of day and night more intuitively, people have invented more intuitive astronomical globes, such as: a kind of electric globe applied by Guangzhou Saturn Culture Development Co., Ltd. (2022110125065), a sunshine synchronous globe (2009200786339), and an astronomical globe applied by the applicant before (2022715811601).

[0005] The principle of these astronomical globes is to set light sources and rotating light barriers in the inside of the traditional sphere. The light barrier separates the light of the light source to form a half black and half bright sphere, thereby simulating the change of day and night. The light barrier in the 2009200786339 patent and the light barrier disc in the 2022715811601 patent belong to the light barrier.

[0006] The light barrier is usually installed on the inner shaft 4 and rotates around the inner shaft 4, such as the inner support in the 2022110125065 patent, the vertical shaft in the 2009200786339 patent, and the light barrier disc fixing shaft in the 2022715811601 patent. The inner shaft 4 and the angle between the connecting line of the north and south poles of the sphere and the angle between the earth rotation axis and the earth orbit plane are equal. Therefore, when the light barrier rotates, the half-face light in the sphere can rotate to simulate the alternation of four seasons, and the rotation of the sphere can be used to simulate the alternation of day and night. Generally speaking, the form of the inner shaft 4 of most existing astronomical globes mainly includesFigure 1 and Figure 2 Two cases, that is, the inner shaft is vertical, or the connecting line of the north and south poles of the sphere is vertical.

[0007] The technical problem of the astronomical globe described above is that the structure of the rotating part connected to the driving light isolation piece on the inner shaft 4 is relatively complex. In order to achieve the rotation of the light isolation piece and ensure the stable operation of the light isolation piece, the above-mentioned patents all adopt complex mechanical structures, which are inconvenient to install. Especially the partial parts of the transmission assembly of the light isolation plate in the patents with numbers 2022110125065 and 2022715811601, the bearing is fixed on the inner shaft 4. Since the inner shaft 4 is slender, if the bearing is installed at the middle position of the inner shaft 4, the installation process is extremely inconvenient, and it is also inconvenient to replace, which is easy to damage the inner shaft.

[0008] Due to the above technical problems, improvement is needed.

[0009] In addition, the patent astronomical globe with number 2022715811601 applied by the applicant before is the closest prior art of the present patent. Practical new type content

[0010] The technical problem to be solved by the present utility model is to provide an astronomical globe which is convenient to install.

[0011] The utility model discloses an astronomical globe, including the inner shaft in the sphere, the light isolation piece and the inner drive device of driving light isolation piece rotation, the inner drive device includes the casing, the rotating part and the inner drive unit, the rotating part can rotate and set up on the casing, the inner drive unit is located in casing and with Rotating part transmission connection, the inner shaft passes this inner drive device from the axial, the casing is fixed on the inner shaft, the rotating part is connected with the light isolation piece.

[0012] As preferred, the inner shaft is provided with a radially extending clamping strip, and the bottom surface of the casing is provided with a matching clamping groove.

[0013] As preferred, the rotating part is connected with the light isolation piece through a fixing piece, the light isolation piece is provided with a light source, the inner shaft is provided with a slip ring, the input end of the slip ring is connected with a first wire for supplying power to the light source, and the output end is electrically connected with the light source; The inner shaft is located inside the light isolation piece, and the light isolation piece is provided with a hollow hole accommodating the inner shaft, the slip ring and the inner drive device.

[0014] As preferred, a fixed rod is arranged on the upper part of the hollow hole of the light isolation piece, the fixed rod is opposite to the top of the inner shaft and separated by a distance, and a spring is arranged between the fixed rod and the inner shaft.

[0015] Preferably, the inner shaft is provided with a light source, and the light shielding member is in a hemispherical shape.

[0016] Preferably, the ball is arranged on a base, the base is provided with an outer driving unit and a circuit board, the outer driving unit is in transmission connection with the ball through a transmission assembly, the inner shaft is connected with the outer shaft through a connecting member, the included angle between the inner shaft and the outer shaft is equal to the included angle between the earth rotation axis and the earth orbit plane, the outer shaft is arranged in the transmission assembly and is fixedly connected with the base, the inner shaft and the outer shaft are in a tubular shape, the circuit board is electrically connected with the light source and the inner driving device through a first wire and a second wire respectively, and the first wire and the second wire are arranged in the inner shaft and the outer shaft.

[0017] Preferably, the base is provided with a bent arm, the north pole of the ball is rotatably connected with the upper end of the bent arm, the south pole of the ball is provided with a third through hole, the transmission assembly comprises a driving member, a second gear and a third gear, the driving member is arranged on the third through hole, and a groove is arranged on the bottom surface of the driving member and is in a circumferential distribution, the second gear is arranged below the driving member, the upper end surface of the second gear is provided with a plurality of protrusions in a circumferential distribution, the protrusions are arranged in the groove, the third gear is arranged on the output shaft of the outer driving unit, and the third gear is in engagement with the second gear, a pipe base is fixedly connected in the base, the pipe base is provided with a protruding pipe body and a connecting part connected with the base, the outer shaft is sleeved on the pipe body, and the structure formed after the sleeving is arranged through the second gear and the driving member, and the inner driving unit and the outer driving unit are motors, combinations of motors and speed reducers or combinations of motors and gearboxes.

[0018] Preferably, the rotating part is a rotating disc, the center of the rotating disc is provided with a first through hole, the shell is in a cylindrical shape as a whole, the shell is provided with an annular upper end surface, a plurality of balls are arranged on the upper end surface in a circumferential distribution, and the center of the bottom surface of the shell is provided with a second through hole, the bottom surface of the rotating disc is provided with a gear ring, the output shaft of the inner driving unit is provided with a first gear, the first gear is in engagement with the gear ring, the rotating disc is arranged on the balls, and the rotating disc or the shell is provided with a limiting structure for limiting the rotating disc above the shell during rotation.

[0019] Preferably, the limiting structure is a plurality of elastic hooks arranged below the first through hole of the rotating disc, the elastic hooks are buckled into the inner edge of the upper end surface of the shell and have gaps between each other.

[0020] Alternatively, the limiting structure is a protruding pipe arranged on the inner edge of the upper end surface of the shell, the protruding pipe is arranged through the first through hole and has gaps between each other, and an elastic annular slope is arranged on the upper part of the protruding pipe.

[0021] Or, the limiting structure is a flexible flange at the outer edge of the rotating disc, the upper end edge of the shell has an outward flange, the flexible flange clamps the outward flange and has a gap between them.

[0022] The utility model discloses still designed a kind of astronomical globe, including the inner shaft in the sphere, light barrier and the inner driving device of driving light barrier rotation, the inner driving device includes shell, rotating part and inner driving unit, the rotating part can be rotatably arranged on shell, the inner driving unit is located in the shell and is transmission connection with the rotating part;The shell is fixed at the top of the inner shaft;The rotating part is connected with the light barrier.

[0023] The utility model discloses compared with prior art has the beneficial effects that: inner driving device sets rotating part and inner driving unit into a whole, when installing, inner driving device can be conveniently installed on inner shaft, and installation and disassembly are more convenient compared with prior art. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings are included to provide a further understanding of the utility model, and constitute a part of the specification, and are used to explain the utility model together with embodiments of the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0025] Figure 1 It is the local schematic view of prior astronomical globe, and inner shaft is vertical in the drawing;

[0026] Figure 2 It is the local schematic view of another prior astronomical globe, and the connecting line of the north and south poles of sphere is vertical in the drawing;

[0027] Figure 3 It is the schematic view of astronomical globe sphere driving structure of the utility model;

[0028] Figure 4 It is the schematic view of inner shaft, outer shaft and connecting piece;

[0029] Figure 5 It is the structural schematic view of embodiment 1;

[0030] Figure 6 It is the structural schematic view of the inner driving device of embodiment 1;

[0031] Figure 7 It is the plan view of ball ring piece;

[0032] Figure 8 It is the connecting schematic view of U-shaped card piece;

[0033] Figure 9 It is the connecting schematic view of L-shaped fixing piece;

[0034] Figure 10is a structural schematic diagram of the internal drive device in Example 2;

[0035] Figure 11 is a top view of the housing of the internal drive device in Example 2;

[0036] Figure 12 is an appearance view of the housing of the internal drive device in Example 2;

[0037] Figure 13 is a structural schematic diagram of the internal drive device in Example 2 after improvement of the limiting structure;

[0038] Figure 14 is a front view of another improved internal drive device in Example 2;

[0039] Figure 15 is a structural schematic diagram of the internal drive device in Example 3;

[0040] Figure 16 is a bottom view of the internal drive device in Example 4;

[0041] Figure 17 is a top view of the internal shaft in Example 4;

[0042] Figure 18 is a bottom view of another internal drive device in Example 4;

[0043] Figure 19 is a top view of another internal shaft in Example 4;

[0044] Figure 20 is a structural schematic diagram of Example 5;

[0045] Figure 21 is a structural schematic diagram of Example 6;

[0046] Figure 22 is a structural schematic diagram of the internal drive device in Example 6;

[0047] Figure 23 is a structural schematic diagram of Example 7;

[0048] Figure 24 is a partial enlarged view of the position of the light shielding member fixing rod and the spring;

[0049] Figure 25 is a structural schematic diagram of Example 8;

[0050] Figure 26 is an assembly schematic diagram of the ball driving structure in Example 8;

[0051] Figure 27 is a top view of the second gear;

[0052] Figure 28 is a bottom view of the driving member;

[0053] Figure 29 is a structural schematic view of Example 9;

[0054] Figure 30 is a structural schematic view of Example 10;

[0055] Figure label: base 1, sphere 2, light source 3, inner shaft 4, clamping strip 41, slip ring 42;

[0056] light shielding member 5, hole 51, fixing rod 52, spring 53;

[0057] inner driving device 6, shell 61, rotating part 62, inner driving unit 63, annular fixing seat 64, first through hole 65, ball 66, second through hole 67, gear ring 68, first gear 69, elastic clamping hook 610, outward turning part 611, elastic turning edge 612, clamping groove 613, recess 614;

[0058] fixing member 7, outer driving unit 8, outer shaft 9, circuit board 10;

[0059] bent arm 11, third through hole 12, driving member 13, pipe base 14, pipe body 15, connecting part 16, second gear 17, protrusion 18, recess 19, connecting member 110, third gear 111;

[0060] hole 20, ball ring piece 21, ball hole 22, ball seat 23, tubular body 24, bearing 25, rotating pipe 26, transmission assembly 27, driving sleeve 28, sleeve 29, gear ring 30, gear 31, outer shaft fixing seat 32, first electric wire 33, second electric wire 34, annular clamping groove seat 35, protruding pipe 36, elastic annular slope surface 37. DETAILED DESCRIPTION

[0061] The utility model will be further described below by combining the drawings with the examples. EXAMPLE

[0062] As Figure 5As shown, the astronomical globe described in the embodiment comprises an inner shaft 4, a light blocking member 5 and an inner driving device 6 for driving the light blocking member 5 to rotate, the light blocking member 5 is a light blocking disc, the inner driving device 6 comprises a shell 61, a rotating part 62 and an inner driving unit 63, the rotating part 62 is rotatably arranged on the shell 61, the inner driving unit 63 is located in the shell 61 and is in transmission connection with the rotating part 62; the inner shaft 4 passes through the inner driving device 6 in the axial direction; the shell 61 is fixed on the inner shaft 4; the fixed mode is that a ring-shaped fixing seat 64 is arranged on the inner shaft 4, and the bottom surface of the shell 61 is fixed on the ring-shaped fixing seat 64 by screws; of course, other fixing modes can also be adopted, such as arranging a sleeve on the bottom surface of the shell 61, and fixing the sleeve on the inner shaft 4 by screws or pins; or directly fixing on the inner shaft by welding, etc.; the rotating part 62 is connected with the light blocking member 5, and the connection mode can be connected by a fixing member 7, which can adopt a clamping member with a U-shaped longitudinal section (such as Figure 8 ), or a fixing member with an L-shaped longitudinal section (such as Figure 9 ), or other existing fixing modes.

[0063] The light blocking member 5 is provided with a light source 3, the inner shaft 4 is provided with a slip ring 42, the input end of the slip ring 42 is connected with a first wire 33 for supplying power to the light source 3, and the output end is in electrical connection with the light source 3; the slip ring 42 is a conventional electrical component, which can realize power supply in the state of relative rotation, and its function is to ensure that the light source 3 can still be powered during rotation to prevent winding; the inner shaft 4 is located inside the light blocking member 5, which means that, in the projection relationship in the direction perpendicular to the paper surface (such as Figure 5 ) of the light projection, the inner shaft 4 is located inside the light blocking member 5; the light blocking member 5 is provided with a hollow hole 51 for accommodating the inner shaft 4, the slip ring 42 and the inner driving device 6, and the function of the hollow hole 51 is to ensure that the light blocking member 5 does not touch the inner shaft 4, the slip ring 42 and the inner driving device 6 during rotation; in order to improve the light blocking effect, the gap between the hollow hole 51 and the inner shaft 4, the slip ring 42 and the inner driving device 6 is as small as possible, such as 1-2 mm.

[0064] The structure of the inner driving device 6 is as shown in Figure 6 , the rotating part 62 is a rotating disc, the center of the rotating disc is provided with a first through hole 65; the shell 61 is generally cylindrical, and has a ring-shaped upper end face, a plurality of ball bearings 66 are arranged in a circumferential distribution on the upper end face, the ball bearings 66 are arranged in the following manner: a plurality of recesses 614 are arranged on the upper end face of the shell 61, and a ball bearing ring 21 (such as Figure 7), the ball ring 21 is provided with ball holes 22 distributed in a circle, the balls 66 are arranged in the ball holes 22 and the recesses 614; the bottom surface of the shell 61 is provided with a second through hole 67; the bottom surface of the rotating disc is provided with a gear ring 68, the output shaft of the inner driving unit 63 is provided with a first gear 69, the first gear 69 is engaged with the gear ring 68; the rotating disc is arranged on the balls 66; obviously, the arrangement of the balls 66 is not limited to this form, and other forms are also available in the prior art; the rotating disc is provided with a limiting structure for limiting the rotating disc above the shell during rotation, the limiting structure is an elastic flange 612 located at the outer edge of the rotating disc, the upper end edge of the shell 61 has an outward flange 611, the elastic flange 612 buckles the outward flange 611 and has a gap therebetween, the existence of the gap can ensure that the rotation of the rotating disc is not affected, and the cooperation of the elastic flange 612 and the outward flange 611 enables the rotating disc to rotate above the shell without falling off.

[0065] The balls 66 can provide powerful support for the rotating disc, and provide a basis for better supporting the light shielding member 5 by the rotating disc. The first through hole 65, the second through hole 67 and the hollow portion in the shell 61 constitute a passage for the inner shaft 4; the hole diameter of the first through hole 65 and the second through hole 67 is preferably slightly larger than the outer diameter of the inner shaft 4, for example, 1-2 mm larger than the outer diameter of the inner shaft 4, so that the support is more stable.

[0066] In this embodiment, the driving structure of the ball 2 is the same as that of the prior art. The driving scheme of the patent 2022110125065 and the driving scheme of the patent 2022715811601 can also be used.

[0067] The driving structure of the ball 2 can also use the driving scheme of the patent Figure 3The scheme is that the sphere 2 is arranged on the base 1, the base 1 is internally provided with an outer driving unit 8 and a circuit board 10, the outer driving unit 8 is in driving connection with the sphere 2 through a transmission assembly 27; the inner shaft 4 is connected with an outer shaft 9 through a connecting piece 110, and the included angle between the inner shaft 4 and the outer shaft 9 is equal to the included angle between the earth rotation axis and the earth orbit plane, the outer shaft 9 penetrates the sphere 2 and the transmission assembly 27 and is fixedly connected in the base 1; specifically, the transmission assembly 27 comprises a driving sleeve 28, a sleeve pipe 29, a gear ring 30 and a gear 31, the sleeve pipe 29 is arranged outside the outer shaft 9, bearings are arranged between the sleeve pipe 29 and the outer shaft 9 in order to realize the relative rotation therebetween; the gear ring 30 is arranged at the bottom of the sleeve pipe 29, the gear 31 is arranged on the output shaft of the outer driving unit 8, the gear 31 is in meshing connection with the gear ring 30; the sleeve pipe 29 is arranged on the base 1 through the bearings to ensure that the sleeve pipe 29 can rotate; the driving sleeve 28 is fixedly sleeved on the top of the sleeve pipe 29 and rotates together with the sleeve pipe 29, meanwhile, the driving sleeve 28 is fixedly connected with the sphere 2, thereby the sphere 2 can be driven to rotate, and the outer shaft 9 is fixed and does not rotate, thereby the inner shaft 4 connected with the outer shaft 9 is also fixed and does not rotate, and the inner driving device 6 on the inner shaft 4 is provided with powerful support; the inner shaft 4 and the outer shaft 9 are both in tubular shape; the circuit board 10 is electrically connected with the light source 3 and the inner driving device 6 through a first electric wire and a second electric wire respectively; the first electric wire 33 and the second electric wire 34 are arranged in the inner shaft 4 and the outer shaft 9. In order to facilitate wiring, the inner shaft 4 and the outer shaft 9 are in tubular shape, of course, this is not necessary, if a solid structure is made, the first electric wire 33 and the second electric wire 34 can descend closely to the inner shaft 4, or wiring grooves are arranged on the surface of the inner shaft 4, and the electric wires run in the wiring grooves. The connecting piece 110 is made in sheet shape, and internal wiring grooves can also be arranged.

[0068] The inner driving unit 63 and the outer driving unit 8 are motors, combinations of motors and speed reducers or combinations of motors and gearboxes, and a person skilled in the art can select according to actual requirements.

[0069] When the astronomical globe is used, the inner driving device 6 drives the rotating part 62 to rotate, the rotating part 62 drives the light shielding part 5 to rotate around the inner shaft 4, and due to the existence of the included angle, the rotation of the light shielding part 5 can simulate the alternation of the four seasons. The outer driving unit 8 can drive the sphere 2 to rotate and simulate the earth rotation.

[0070] The astronomical globe, half of the sphere is illuminated, and the light display pattern becomes the white daylight hemisphere, and the other half of the sphere is not illuminated due to the shielding of the built-in light shielding part and is still black, becoming the dark hemisphere; the astronomical globe solves the defects of various astronomical scenes that cannot be displayed on ordinary globes, makes the globe a popular science instrument integrating astronomy and geography, has simple structure and is convenient to operate, makes up for the defects of the ordinary globe that cannot reflect the light scene in the universe, is a brand-new teaching and popular science globe with more scientific significance, and is especially suitable for use in teaching.

[0071] The astronomical globe, the inner drive device 6 sets the rotating part and the inner drive unit as a whole, the inner shaft passes through the inner drive device from the axial direction, the inner drive device can be flexibly sleeved on the inner shaft during installation, and then it is fixed. The installation is more convenient than the prior art. Since the inner drive device is integrally installed on the inner shaft, the operation is more stable. Embodiment

[0072] The astronomical globe described in this embodiment is different from embodiment 1 in that the structure of the inner drive device 6 is as shown in Figure 10 、 Figure 11 、 Figure 12 The gear ring 68 adopts an outer gear ring, and the first gear 69 is engaged with the gear ring 68 through the hole 20 on the upper end surface of the shell 61. The setting mode of the ball 66 is that the ball seats 23 are circumferentially arranged on the upper end surface of the shell 61, and the ball 66 is arranged in the ball seat 23. The limiting structure is a plurality of elastic hooks 610 located below the first through hole 65 of the rotating disc, which are buckled into the inner edge of the upper end surface of the shell 61 and have gaps between each other. The existence of the gap can make the rotation of the rotating disc not be affected, and the elastic hooks 610 make the rotating disc rotate above the shell without falling off.

[0073] Obviously, the limiting structure can also be set reversely as shown in Figure 13 , that is, the elastic hooks 610 are located above the inner edge of the upper end surface of the shell 61 and are buckled into the first through hole 65 and have gaps between each other.

[0074] The limiting structure can also be a protruding pipe 36 located on the inner edge of the upper end surface of the shell 61, as shown in Figure 14 , which passes through the first through hole 65 and has gaps between each other. An elastic annular slope surface 37 is arranged on the upper part of the protruding pipe 36. The existence of the gap can make the rotation of the rotating disc not be affected, and the elastic annular slope surface 37 makes the rotating disc rotate above the shell without falling off. The elastic annular slope surface 37 is easy to install the rotating disc. When passing through the first through hole, the rotating disc is just pressed down, and then the rotating disc is placed below the elastic annular slope surface 37. Of course, the elastic annular slope surface 37 can not be used, but the limiting structure can be divided into two parts and installed in sequence, such as a thread is arranged on the outer periphery of the protruding pipe 36. After the protruding pipe 36 is sleeved into the rotating disc, a limiting nut is arranged above the protruding pipe 36 and above the rotating disc. Embodiment

[0075] The astronomical globe described in this embodiment is different from embodiment 1 in that the structure of the inner drive device 6 is as shown in Figure 15 , and the rotating disc is provided with a tubular body 24, and the tubular body 24 is installed on the shell 61 through a bearing 25, and the bearing 25 supports the rotating disc instead of the ball 66 in the inner drive device 6. Embodiment

[0076] The astronomical globe described in this embodiment differs from the one described in Embodiment 1 in the way the shell 61 is fixed to the inner shaft 4. As shown in Figure 16 , 17 , the inner shaft 4 is provided with four radially extending clamping strips 41 arranged in a cross shape. The shell 61 is provided with a matching clamping groove 613 in its bottom surface. After the inner drive device 6 is fitted onto the inner shaft 4, the clamping strips 41 are clamped into the clamping groove 613.

[0077] When being installed, the inner drive device 6 is fitted onto the inner shaft 4 from top to bottom, and the clamping strips 41 are clamped into the clamping groove 613, so that the inner drive device 6 is stably installed on the inner shaft 4. In order to make the connection more secure, glue can be applied in the clamping groove 613 when being installed.

[0078] The clamping strips 41 can be four arranged in a cross shape as shown in Figure 16 , or two arranged in a straight line as shown in Figure 19 , or other numbers arranged in a circumferential direction.

[0079] Compared with the fixing methods such as screwing, pinning and welding, the fixing method of this embodiment is more convenient, and the inner drive device 6 can be directly fitted onto the inner shaft 4, which makes the installation more convenient.

[0080] The shell 61 of this embodiment is provided with a clamping groove 613 in its bottom surface. The clamping groove 613 can be directly located on the bottom surface of the shell (as shown in Figure 16 ), or the clamping groove 613 can be arranged on a ring-shaped clamping groove seat 35 located on the bottom surface of the shell (as shown in Figure 18 ). Embodiment

[0081] As shown in Figure 20 , the astronomical globe described in this embodiment differs from the one described in Embodiment 1 in that the inner shaft 4 is inclined, and the line connecting the north and south poles of the spherical body is vertical. Embodiment

[0082] As shown in Figure 21 , the astronomical globe described in this embodiment differs from the one described in Embodiment 1 in that:

[0083] The inner shaft 4 is provided with a light source 3, and the light-blocking member 5 is in a hemispherical shape;

[0084] The light source 3 of the astronomical globe is fixed, and the hemispherical light-blocking member 5 rotates around the light source 3. A light-reflecting coating can be arranged on the side of the light-blocking member 5 facing the light source 3.

[0085] In this embodiment, the inner drive device 6 can also be arranged as shown in Figure 22The structure of the embodiment is different from that of the first embodiment in that the rotating part 62 does not adopt a rotating disc but directly adopts a rotating tube 26, the fixing part 7 adopts a long straight arm to connect the rotating tube 26 with the half-spherical light-blocking part 5. Embodiment

[0086] As shown in Figure 23 , 24 , the astronomical globe of the embodiment is different from that of the first embodiment in that a fixing rod 52 is arranged on the light-blocking part 5 above the upper part of the hole 51, the fixing rod 52 is opposite to the top of the inner shaft 4 and is separated from the top of the inner shaft 4 by a distance, and a spring 53 is arranged between the fixing rod 52 and the inner shaft 4.

[0087] In this way, the fixing rod 52 can be supported in addition to the support of the fixing part 7 to the light-blocking part 5, the light-blocking part 5 can be better supported in the embodiment, and the rotation of the light-blocking part 5 is not affected. Embodiment

[0088] The astronomical globe of the embodiment is different from that of the first embodiment in that the driving structure of the ball adopts a more advanced scheme, that is,

[0089] As shown in Figure 25 , 26 , the base 1 has a bent arm 11, the north pole of the ball 2 is rotatably connected to the upper end of the bent arm 11, the rotatable connection at the north pole of the globe has many forms in the prior art, and a round rod is connected to the bottom surface of the bent arm 11 in this embodiment, the round rod penetrates into the hole of the ball 2 and can rotate relative to the hole; a third through hole 12 is arranged at the south pole of the ball 2; the transmission assembly 27 includes a driving part 13, a second gear 17 and a third gear 111, the driving part 13 is arranged on the third through hole 12, and a circumferentially distributed groove 19 is arranged on the bottom surface of the driving part 13 (as shown in Figure 28 ); the second gear 17 is arranged below the driving part 13, a circumferentially distributed protrusion 18 is arranged on the upper end surface of the second gear 17 (as shown in Figure 27 ), the protrusion 18 is located in the groove 19; the third gear 111 is located on the output shaft of the outer driving unit 8, the third gear 111 is engaged with the second gear 17; a pipe seat 14 is fixedly connected in the base 1, the pipe seat 14 has a protruding pipe body 15 and a connecting part 16 connected to the base 1, the outer shaft 9 is sleeved on the pipe body 15, and the structure formed after the sleeving passes through the second gear 17 and the driving part 13; wherein the inner driving unit 63 and the outer driving unit 8 are a motor, a combination of a motor and a speed reducer or a combination of a motor and a gear box.

[0090] In use, the external drive unit 8 drives the second gear 17 to rotate via the third gear 111. Since the protrusion 18 on the second gear 17 is located in the groove 19 on the bottom surface of the drive member 13, the drive member 13 also rotates accordingly. Since the drive member 13 and the ball 2 are integrated, and the north pole point of the ball 2 forms a rotatable connection with the upper end of the curved arm 11, the ball 2 can rotate accordingly. During the process of the ball 2 being driven by the external drive unit 8, if the user needs to accelerate its rotation or reverse it, the user's hand can touch the ball to apply force, and the protrusion 18 will disengage from the groove 19 to cooperate with the movement of the ball 2. In order to better achieve this function, the drive member 13 and the second gear 17 can be made of relatively soft plastic material, the height of the protrusion 18 should not be too high, generally 2-3 mm is appropriate, and the curved arm 11 can also have a certain degree of elasticity. In this way, the outer shaft 9 is not directly fixed inside the base 1. Instead, the tube seat 14 is first installed on the base 1, and the outer shaft 9 can be directly fitted onto the tube seat 14 later, which facilitates the installation of the outer shaft 9. Example

[0091] like Figure 29 As shown, the astronomical globe described in this embodiment includes an inner shaft 4, a light-blocking component 5, and an internal drive device 6 that drives the light-blocking component 5 to rotate, all located within a sphere 2. The internal drive device 6 includes a housing 61, a rotating component 62, and an internal drive unit 63. The rotating component 62 is rotatably mounted on the housing 61, and the internal drive unit 63 is located inside the housing 61 and is connected to the rotating component 62 in a transmission manner. The housing 61 is fixed to the top of the inner shaft 4. The fixing method is to provide an annular fixing seat 64 on the inner shaft 4, and then fix the bottom surface of the housing 61 to the annular fixing seat 64 with screws, or to the annular fixing seat 64 with glue. The rotating component 62 is connected to the light-blocking component 5.

[0092] There are various ways to fix the housing 61, and other solutions can also be selected, such as setting a magnetic block on the top of the inner shaft 4, setting a magnetic block on the bottom surface of the housing 61, and using magnetism for fixation, etc.

[0093] The rotating component 62 is connected to the light-blocking component 5 via the fixing component 7. The light-blocking component 5 is provided with a light source 3. The inner shaft 4 is provided with a slip ring 42. The input end of the slip ring 42 is connected to a first wire 33 that supplies power to the light source 3, and the output end is electrically connected to the light source 3. The inner shaft 4 is located inside the light-blocking component 5. The light-blocking component 5 is provided with a hole 51 to accommodate the inner shaft 4, the slip ring 42 and the inner drive device 6.

[0094] The specific structure of the internal drive unit 6 can be as follows: Figure 6 , 10 As shown in 13, 14, and 15, the driving structure of the sphere can also adopt the scheme mentioned in the above embodiments.

[0095] The astronomical globe described in the embodiment has an inner driving device, which sets the rotating part and the inner driving unit as a whole. The inner driving device can be conveniently installed on the top of the inner shaft during installation. The installation and disassembly are more convenient than the prior art, and the overall structure is more compact. Embodiment

[0096] As shown in Figure 30 , the astronomical globe described in the embodiment is different from embodiment 7 in that the inner shaft 4 is provided with a light source 3, and the light blocking member 5 is in the shape of a hemisphere.

[0097] The specific structure of the inner driving device 6 can be as shown in Figure 22 , or other solutions mentioned in the above embodiments can also be used.

[0098] Obviously, the protection scope of the patent is not limited to the above embodiments. Equivalent modifications made under the inspiration of the spirit of the patent should all fall within the protection scope of the patent.

Claims

1. An astronomical globe comprising an inner shaft (4), a light barrier (5) and an inner drive (6) for driving the light barrier (5) in rotation, located inside a sphere (2), characterized in that: The inner drive device (6) comprises a housing (61), a rotating part (62) and an inner drive unit (63), the rotating part (62) is rotatably arranged on the housing (61), and the inner drive unit (63) is located in the housing (61) and is in transmission connection with the rotating part (62); the inner shaft (4) passes through the inner drive device (6) in the axial direction; the housing (61) is fixed on the inner shaft (4); and the rotating part (62) is connected with the light shielding part (5).

2. An astronomical globe according to claim 1, characterized in that: The inner shaft (4) is provided with a radially extending clamping strip (41), and the bottom surface of the housing (61) is provided with a matching clamping groove (613).

3. An astronomical globe according to claim 1, characterized in that: The rotating part (62) is connected with the light shielding part (5) through a fixing part (7), the light shielding part (5) is provided with a light source (3), the inner shaft (4) is provided with a slip ring (42), the input end of the slip ring (42) is connected with a first wire (33) for supplying power to the light source (3), and the output end is in electrical connection with the light source (3); the inner shaft (4) is located inside the light shielding part (5), and the light shielding part (5) is provided with a hollow hole (51) for accommodating the inner shaft (4), the slip ring (42) and the inner drive device (6).

4. An astronomical globe according to claim 3, wherein: The upper part of the hollow hole (51) of the light shielding part (5) is provided with a fixing rod (52), the fixing rod (52) is opposite to the top of the inner shaft (4) and is separated by a distance, and a spring (53) is arranged between the fixing rod (52) and the inner shaft (4).

5. An astronomical globe according to claim 1, characterized in that: The inner shaft (4) is provided with a light source (3), and the light shielding part (5) is in a semispherical shape.

6. An astronomical globe according to any one of claims 1 to 5, characterized in that: The rotating part (62) is a rotating disc, the center of the rotating disc is provided with a first through hole (65); the housing (61) is generally in a cylindrical shape, the housing (61) has an annular upper end surface, a plurality of balls (66) are arranged in a circumferential direction on the upper end surface, and a second through hole (67) is arranged at the center of the bottom surface of the housing (61); the bottom surface of the rotating disc is provided with a gear ring (68), a first gear (69) is arranged on the output shaft of the inner drive unit (63), the first gear (69) is in meshing connection with the gear ring (68); the rotating disc is arranged on the balls (66); and the rotating disc or the housing (61) is provided with a limiting structure for limiting the rotating disc above the housing during rotation.

7. An astronomical globe according to claim 6, characterized in that: The limiting structure is a plurality of elastic clamping hooks (610) arranged below the first through hole (65) of the rotating disc, the elastic clamping hooks are buckled into the inner edge of the upper end surface of the housing (61) and have gaps between each other; or the limiting structure is a protruding pipe (36) arranged at the inner edge of the upper end surface of the housing (61), the protruding pipe (36) passes through the first through hole (65) and has gaps between each other, and an elastic annular slope (37) is arranged at the upper part of the protruding pipe (36); or the limiting structure is an elastic flange (612) arranged at the outer edge of the rotating disc, the upper end edge of the housing (61) has an outward flange (611), and the elastic flange (612) buckles the outward flange (611) and has gaps between each other.

8. An astronomical globe comprising an inner shaft (4), a light barrier (5) and an inner drive (6) for driving the light barrier (5) in rotation, located inside a sphere (2), characterized in that: The inner driving device (6) comprises a housing (61), a rotating part (62) and an inner driving unit (63), the rotating part (62) is rotatably arranged on the housing (61), and the inner driving unit (63) is located in the housing (61) and is in transmission connection with the rotating part (62); the housing (61) is fixed on the top of the inner shaft (4); the rotating part (62) is connected with the light isolating piece (5).

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