Teaching aid for simulating seasonal change
By designing a teaching aid with a revolution orbit and driving components, simulating the changes in the four seasons of the earth's revolution around the sun, the problems of measurement errors and tight use of globes in the existing technology are solved, and more efficient use of teaching resources and more accurate teaching effects are achieved.
Patent Information
- Application Number
- CN202421071495.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-16
AI Technical Summary
In the prior art, measurement errors and the number of globes are tight when simulating changes in the four seasons.
Design a teaching aid including a base, a globe, a light source and a driving component. Through the orbit and the driving component, the globe is driven through four seasons to measure the alternating four seasons caused by the earth's revolution around the sun.
It effectively avoids measurement errors caused by changes in benchmark positions, saves the globe used during teaching, avoids waste of resources, and improves teaching efficiency.
Smart Images
Figure CN222636731U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of teaching models, and in particular relates to a teaching aid for simulating seasonal changes. Background Art
[0002] The formation of the four seasons is a difficult and key course in primary school science education, and it is difficult for students to understand the reasons for the formation of the four seasons.
[0003] In the prior art, a lamp is placed to simulate the sun, four positions are determined on the sun's orbit, and four globes are placed at the four positions. The axes of the four globes are tilted to point in the same direction, and a pole is erected at the same location in the northern hemisphere. The pole faces the sun and the length of the shadow of the pole on the globe is observed. This simulation method uses four globes to simulate the state of the earth in four positions. There are errors in the positions of the same location on the four globes, and the measurement results of the shadow length of the pole are inaccurate. Since a set of simulation devices uses four globes, when teaching the formation of the four seasons in multiple classes, it will cause the problem of a tight number of globes to be used. Utility Model Content
[0004] The embodiment of the utility model provides a teaching aid for simulating seasonal changes, aiming to solve the problems of simulation error and large-scale occupation of the globe in the prior art.
[0005] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a teaching aid for simulating seasonal changes, including a base, a globe, a light source and a driving assembly; the base is provided with an orbit matching the earth's orbit, and four seasonal calibration points are provided on the orbit; the globe is arranged on the orbit, and a benchmark is provided on the northern hemisphere of the globe, and the benchmark is collinear with the center of the globe; the light source is arranged on the base and located at the center of the orbit, and the light source is used to emit light toward the globe; the driving assembly is arranged on the base, and the output end is connected to the globe, and the driving assembly is used to drive the globe to pass through each seasonal calibration point in turn, and make the earth's axis direction of the globe consistent when it is at each seasonal calibration point.
[0006] In one possible implementation, the base has a cavity, and the peripheral wall of the cavity forms an orbit; a tray is provided at the bottom of the globe, and a roller is connected under the tray. The roller is rotatably connected to the output end of the driving component, and the roller rolls on the orbit; wherein the length of the peripheral wall of the cavity is an integer multiple of the length of the peripheral wall of the roller.
[0007] In one possible implementation, the drive assembly includes a rotary drive source and a telescopic arm; the rotary drive source is disposed on a base; one end of the telescopic arm is connected to the output end of the rotary drive source, and the other end extends toward the orbit and is connected to a roller.
[0008] In one possible implementation, the telescopic arm includes a fixed rod, a telescopic rod and an elastic member; the fixed rod is connected to the output end of the rotary drive source; the telescopic rod is slidably connected to the fixed rod, and the telescopic rod is connected to the roller; the elastic member is sleeved on the telescopic rod, and its two ends are respectively connected to the fixed rod and the telescopic rod; wherein the elastic member is used to elastically push the telescopic rod so that the roller maintains elastic contact with the orbital track.
[0009] In one possible implementation, the rotary drive source includes a drive shaft and an operating rod; the drive shaft is vertically rotatably connected to the center of the cavity, and the top end is connected to the telescopic arm; the operating rod is rotatably connected to the base, one end extends into the cavity and is transmission-connected to the drive shaft, and the other end extends out of the cavity and is connected to a crank handle.
[0010] In a possible implementation, a first gear is sleeved on the driving shaft, and a second gear is sleeved on the end of the operating rod extending into the cavity, and the second gear is meshingly connected with the first gear.
[0011] In a possible implementation, the circumferential wall of the cavity is provided with an inner gear ring, the inner gear ring forms an orbital track, the circumferential wall of the roller is provided with teeth meshing with the inner gear ring, and the number of teeth of the inner gear ring is an integer multiple of four which is the number of teeth.
[0012] In a possible implementation, a support rod is provided at the top end of the driving shaft, and the light source is disposed on the support rod and is flush with the center height of the globe.
[0013] In a possible implementation manner, the light source is a direct light source, and the light emitted by the light source can cover the benchmark.
[0014] In a possible implementation, a grid paper is provided on the globe, and the grid paper is sleeved on a pole and is perpendicular to the pole.
[0015] The beneficial effect of a teaching aid for simulating seasonal changes provided by the utility model is that: compared with the prior art, the utility model adopts an orbit to simulate the trajectory of the earth's revolution, and drives the globe through four season calibration points through a driving component to simulate the alternating transition of the four seasons caused by the earth's revolution around the sun. Compared with the teaching method of placing four globes in four positions to reflect the four seasons, it can save globes used in teaching, avoid wasting teaching resources due to a large number of globes, and is conducive to maximizing the utilization of teaching resources; and the benchmark set on the globe can follow the globe to make circular motion around the light source, and the position of the benchmark on the globe remains unchanged, avoiding measurement errors caused by changes in the benchmark position; when the driving component is used, the earth's axis is in the same direction when the globe passes through the four season calibration points, and it can achieve automatic driving teaching of the teaching aid while avoiding manual correction of the earth's axis, making the teaching efficiency higher. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1A schematic diagram of a three-dimensional structure of a teaching aid for simulating seasonal changes provided by an embodiment of the utility model;
[0017] Figure 2 A three-dimensional structural schematic diagram of a driving assembly used in a teaching aid for simulating seasonal changes provided by an embodiment of the utility model;
[0018] Figure 3 A schematic diagram of the structure of a driving assembly used in a teaching aid for simulating seasonal changes provided by an embodiment of the utility model;
[0019] Figure 4 A schematic diagram of the structure of a driving assembly used in a teaching aid for simulating seasonal changes provided in another embodiment;
[0020] Figure 5 A schematic diagram of the three-dimensional structure of a globe used in a teaching aid for simulating seasonal changes provided by an embodiment of the utility model;
[0021] In the figure: 10, base; 11, orbit; 12, seasonal calibration point; 13, cavity; 14, inner gear ring; 20, globe; 21, benchmark; 22, tray; 23, roller; 231, teeth; 24, grid paper; 30, light source; 40, drive assembly; 41, rotation drive source; 411, drive shaft; 412, operating lever; 413, crank; 42, telescopic arm; 421, fixed rod; 422, telescopic rod; 423, elastic member; 43, first gear; 44, second gear; 45, support rod. DETAILED DESCRIPTION
[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0023] It should be noted that when an element is referred to as being "disposed on" another element, it may be directly on the other element or indirectly on the other element. It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "back", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features.
[0024] Please also read Figure 1 and Figure 5 Now, a teaching aid for simulating seasonal changes provided by the utility model is described. The teaching aid for simulating seasonal changes includes a base 10, a globe 20, a light source 30 and a driving assembly 40; the base 10 is provided with an orbit 11 matching the orbit of the earth, and the orbit 11 is provided with four seasonal calibration points 12; the globe 20 is arranged on the orbit 11, and a benchmark 21 is arranged on the northern hemisphere of the globe 20, and the benchmark 21 is colinear with the center of the globe 20; the light source 30 is arranged on the base 10 and is located at the center of the orbit 11, and the light source 30 is used to emit light toward the globe 20; the driving assembly 40 is arranged on the base 10, and the output end is connected to the globe 20, and the driving assembly 40 is used to drive the globe 20 to pass through each seasonal calibration point 12 in sequence, and make the earth axis of the globe 20 at each seasonal calibration point 12 The orientation is consistent.
[0025] It should be noted that the four seasonal calibration points 12 can be scales or markings set on the revolution track 11 to calibrate the movement position of the globe 20 so that the globe 20 can accurately stay at each seasonal calibration point 12, or the globe 20 can be driven by the driving component 40 to move a fixed distance to ensure that the globe 20 can accurately stay. In teaching, the globe 20 is placed at the four seasonal calibration points 12, and the lengths of the shadows of the benchmark 21 at the four positions are observed, and then the position of the benchmark 21 is inferred. Seasons, the axes of the globe 20 located at the four season marking points 12 are oriented in the same direction, and the axis of the globe 20 is tilted. When the globe 20 rotates around the axis, the relative position of the marker 21 changes, and the length of the projection of the marker 21 also changes accordingly. When the shadow of the marker 21 is the longest, the position of the marker 21 is at the winter solstice; when the shadow of the marker 21 is the shortest, the position of the marker 21 is at the summer solstice. Since the earth revolves counterclockwise around the sun, it can be determined that the globe 20 is at the season marking point 12 at the vernal equinox and the autumnal equinox.
[0026] The beneficial effect of a teaching aid for simulating seasonal changes provided by the utility model is that: compared with the prior art, the utility model adopts an orbit 11 to simulate the trajectory of the earth's revolution, and drives the globe 20 through four season calibration points 12 through a driving component 40 to simulate the alternating transition of the four seasons caused by the earth's revolution around the sun. Compared with the teaching method of placing four globes 20 in four positions to reflect the four seasons, it can save the globes 20 used in teaching, avoid the waste of teaching resources caused by a large number of globes 20, and is conducive to maximizing the utilization of teaching resources; and the benchmark 21 set on the globe 20 can follow the globe 20 to make a circular motion around the light source 30, and the position of the benchmark 21 on the globe 20 remains unchanged, avoiding measurement errors caused by changes in the position of the benchmark 21; when the driving component 40 is used, the earth's axis is in the same direction when the globe 20 passes through the four season calibration points 12, and it can realize automatic driving teaching of the teaching aid while avoiding manual correction of the earth's axis, making the teaching efficiency higher.
[0027] In one possible implementation, see Figure 1 The base 10 has a cavity 13, and the peripheral wall of the cavity 13 forms a revolution track 11; a tray 22 is provided at the bottom of the globe 20, and a roller 23 is connected below the tray 22, and the roller 23 is rotatably connected to the output end of the driving component 40, and the roller 23 rolls on the revolution track 11; wherein, the peripheral wall length of the cavity 13 is an integer multiple of the peripheral wall length of the roller 23.
[0028] It should be noted that the orbit 11 simulates the orbit of the earth. The shape of the orbit 11 is an ellipse that is approximately a circle, which can be more similar to the true orbit of the earth, and can more clearly observe the changes in the position of the globe 20 and the light source 30 when it is at the four season calibration points 12; the elliptical orbit 11 has two perigees and two apogees, which serve as four season calibration points 12 respectively. The roller 23 can switch the position between the season calibration points 12 by rotating one or more full circles, and can ensure that the direction of the earth's axis at each calibration point is consistent, which is conducive to the teaching aid to realize automated teaching.
[0029] In one possible implementation, see Figure 1 and Figure 2 The driving assembly 40 includes a rotating driving source 41 and a telescopic arm 42; the rotating driving source 41 is disposed on the base 10; one end of the telescopic arm 42 is connected to the output end of the rotating driving source 41, and the other end extends toward the orbital track 11 and is connected to the roller 23.
[0030] It should be noted that the teaching aid has a long service life. Since the rotation drive source 41 serves as the power input of the entire device, manual drive can be used to apply rotational power to the teaching aid, which can extend the service life of the teaching aid. You can also choose to use a drive motor to complete the automated teaching demonstration of the teaching aid by opening and closing the drive motor, which can improve the automation capability of the teaching aid. The telescopic arm 42 is rotatably connected to the roller 23, and can drive the roller 23 to roll along the inner circumference of the orbit 11, so that the globe 20 can balance the deviation of the earth's axis through the rotation of the roller 23 during the simulated revolution, so that the direction of the earth's axis remains consistent when the globe 20 revolves to the four seasonal calibration points 12, thereby realizing the automated use of the teaching aid.
[0031] In one possible implementation, see Figure 3 The telescopic arm 42 includes a fixed rod 421, a telescopic rod 422 and an elastic member 423; the fixed rod 421 is connected to the output end of the rotary drive source 41; the telescopic rod 422 is slidably connected to the fixed rod 421, and the telescopic rod 422 is connected to the roller 23; the elastic member 423 is sleeved on the telescopic rod 422, and its two ends are respectively connected to the fixed rod 421 and the telescopic rod 422; wherein the elastic member 423 is used to elastically push the telescopic rod 422, so that the roller 23 maintains elastic contact with the orbital track 11.
[0032] It should be noted that when the telescopic arm 42 rotates along the orbit 11, since the orbit 11 is elliptical, the distance between the telescopic rod 422 and the fixed rod 421 changes with the distance from the inner wall of the orbit 11 to the center of the ellipse, and the fixed rod 421 can be provided with two blind holes, and the telescopic rod 422 can be provided with two rod bodies that can be inserted into the blind holes, and the rod bodies can be inserted into or extended out of the blind holes to make the telescopic rod 422 approach or move away from the fixed rod 421; the elastic member 423 can be a spring, and the elastic member 423 always pushes the telescopic rod 422 and applies elastic force to the telescopic rod 422. Since the orbit 11 limits the roller 23, the roller 23 can always maintain rolling cooperation with the orbit 11, which is beneficial to the effectiveness of cooperation between the structures.
[0033] In one possible implementation, see Figure 2 The rotating driving source 41 includes a driving shaft 411 and an operating rod 412; the driving shaft 411 is vertically rotatably connected to the center of the cavity 13, and the top end is connected to the telescopic rotating arm 42; the operating rod 412 is rotatably connected to the base 10, one end of which extends into the cavity 13 and is transmission-connected to the driving shaft 411, and the other end extends out of the cavity 13 and is connected to the crank 413.
[0034] It should be noted that the driving shaft 411 is fixedly connected to the telescopic arm 42, and drives the telescopic arm 42 to rotate within the orbit 11 through its own rotation; the operating rod 412 serves as the power input end of the overall device, providing power for the revolution of the globe 20 along the orbit 11; the rotational force is manually applied to the operating rod 412 through the crank 413, so that the globe 20 reaches the four seasons calibration points 12, so that teaching can proceed smoothly.
[0035] In one possible implementation, see Figure 2 A first gear 43 is sleeved on the driving shaft 411 , and a second gear 44 is sleeved on one end of the operating rod 412 extending into the cavity 13 , and the second gear 44 is meshedly connected with the first gear 43 .
[0036] It should be noted that the first gear 43 and the second gear 44 can both be spiral bevel gears, which are respectively mounted on the drive shaft 411 and the operating rod 412. Through the meshing connection of the first gear 43 and the second gear 44, the power transmission direction of the operating rod 412 is changed, so that the vertically arranged drive shaft 411 rotates inside the base 10 and drives the telescopic arm 42 to rotate, so that one globe 20 has the teaching demonstration effect of four globes 20, improves measurement accuracy and reduces errors; the first gear 43 and the second gear 44 make the rotation direction of the drive shaft 411 and the rotation direction of the operating rod 412 perpendicular, so that the operating rod 412 enters the base 10 at the side of the base 10 for driving, avoiding the operating rod 412 and the drive shaft 411 from extending coaxially from the bottom of the base 10, which is conducive to the stable placement of the base 10 during teaching and enables the teaching to proceed smoothly.
[0037] In one possible implementation, see Figure 4 The circumferential wall of the cavity 13 is provided with an inner gear ring 14, the inner gear ring 14 forms the orbital track 11, the circumferential wall of the roller 23 is provided with teeth 231 meshingly connected with the inner gear ring 14, and the number of teeth of the inner gear ring 14 is an integer multiple of the number of teeth 231.
[0038] It should be noted that the meshing connection between the inner gear ring 14 and the teeth 231 can prevent the roller 23 from slipping when the orbit 11 and the roller 23 rotate relative to each other, and can prevent the earth's axis from shifting due to the lengthening of the rotation path of the roller 23, so that when the roller 23 rotates along the orbit 11, the earth's axis of the globe 20 remains consistent after reaching the four seasons calibration points 12, which is beneficial for teaching observation; the number of teeth four of the inner gear ring 14 is an integer multiple of the number of teeth 231, which ensures that the direction of the earth's axis of the globe 20 remains consistent when reaching the four seasons calibration points 12, and can make one globe 20 have the teaching effect of four globes 20, can save the globes 20 used in teaching, and maximize the utilization of teaching aids resources.
[0039] In one possible implementation, see Figure 1 and Figure 2 A support rod 45 is disposed at the top of the driving shaft 411 , and the light source 30 is disposed on the support rod 45 and is flush with the center height of the globe 20 .
[0040] It should be noted that the support rod 45 is coaxially arranged with the driving shaft 411 and can rotate along with the driving shaft 411. The light source 30 is flush with the center of the earth of the globe 20. When the globe 20 reaches the four season calibration points 12, the spherical surfaces of the globe 20 relative to the light source 30 can be illuminated by the light source 30, which can simulate the environment of the earth in daytime, and is conducive to simulation teaching.
[0041] In one possible implementation, see Figure 1 The light source 30 is a direct light source 30 , and the light emitted by the light source 30 can cover the marker 21 .
[0042] It should be noted that the light source 30 can be a focusing flashlight to make the light more concentrated and avoid the blurred shadow affecting the measurement; the focusing light source 30 has a smaller illumination area, and the light source 30 rotates with the driving shaft 411 and can always cover the benchmark 21, so that when the globe 20 reaches the four seasons calibration point 12, the shadow of the benchmark 21 is projected on the globe 20, avoiding errors in the shadow length caused by incomplete light coverage, making the observation effect of the shadow length of the benchmark 21 more obvious.
[0043] In one possible implementation, see Figure 5 A grid paper 24 is provided on the globe 20 , and the grid paper 24 is sleeved on the pole 21 and is perpendicular to the pole 21 .
[0044] It should be noted that when the shadow of the benchmark 21 is projected on the surface of the globe 20, the curved surface of the globe 20 is not conducive to the measurement of the shadow length, and a large measurement error will occur when measuring the shadow length of the benchmark 21. By setting the grid paper 24, the shadow of the benchmark 21 is projected on the grid paper 24, and the grid paper 24 can be provided with a scale. Since the grid paper 24 is a plane, the error can be reduced when measuring the shadow length of the benchmark 21, making the measurement result more accurate.
[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A teaching aid for simulating seasonal changes, characterized in that: include: A base, wherein the base is provided with an orbit matching the orbit of the earth, and the orbit is provided with four seasonal calibration points; A globe is arranged on the orbit, a pole is arranged in the northern hemisphere of the globe, and the pole is colinear with the center of the globe; a light source, disposed on the base and located at the center of the orbit, the light source being used to emit light toward the globe; A driving component is arranged on the base, and an output end is connected to the globe. The driving component is used to drive the globe to pass through each of the seasonal calibration points in sequence, and to make the earth axis of the globe in the same direction when it is at each of the seasonal calibration points.
2. A teaching aid for simulating seasonal changes as claimed in claim 1, characterized in that: The base has a cavity, and the peripheral wall of the cavity forms the revolution track; a tray is provided at the bottom of the globe, and a roller is connected under the tray. The roller is rotatably connected to the output end of the driving component, and the roller rolls on the revolution track; wherein the length of the peripheral wall of the cavity is an integer multiple of four of the length of the peripheral wall of the roller.
3. A teaching aid for simulating seasonal changes as claimed in claim 2, characterized in that: The drive assembly comprises: A rotation driving source is disposed on the base; A telescopic rotating arm has one end connected to the output end of the rotary driving source and the other end extending toward the revolution track and connected to the roller.
4. A teaching aid for simulating seasonal changes as claimed in claim 3, characterized in that: The telescopic jib comprises: A fixing rod connected to an output end of the rotation driving source; A telescopic rod, wherein the telescopic rod is slidably connected to the fixed rod, and the telescopic rod is connected to the roller; An elastic member, which is sleeved on the telescopic rod, and whose two ends are respectively connected to the fixed rod and the telescopic rod; Wherein, the elastic member is used to elastically push the telescopic rod so that the roller and the revolution track maintain elastic contact.
5. A teaching aid for simulating seasonal changes as claimed in claim 3, characterized in that: The rotation drive source comprises: A driving shaft is vertically rotatably connected to the center of the excavation cavity, and the top end is connected to the telescopic rotating arm; An operating rod is rotatably connected to the base, one end of which extends into the cavity and is transmission-connected to the driving shaft, and the other end extends out of the cavity and is connected to a crank.
6. A teaching aid for simulating seasonal changes as claimed in claim 5, characterized in that: The driving shaft is sleeved with a first gear, and the end of the operating rod extending into the digging cavity is sleeved with a second gear, and the second gear is meshed and connected with the first gear.
7. A teaching aid for simulating seasonal changes as claimed in claim 2, characterized in that: The peripheral wall of the cavity is provided with an inner gear ring, the inner gear ring forms the orbital track, the peripheral wall of the roller is provided with teeth meshingly connected with the inner gear ring, and the number of teeth of the inner gear ring is an integer multiple of four which is the number of the teeth.
8. A teaching aid for simulating seasonal changes as claimed in claim 5, characterized in that: A support rod is disposed at the top end of the driving shaft, and the light source is disposed on the support rod and is flush with the center height of the globe.
9. A teaching aid for simulating seasonal changes as claimed in claim 8, characterized in that: The light source is a direct light source, and the light emitted by the light source can cover the pole.
10. A teaching aid for simulating seasonal changes according to any one of claims 1 to 9, characterized in that: The globe is provided with grid paper, and the grid paper is sleeved on the benchmark and is perpendicular to the benchmark.