Teaching demonstration instrument and physics teaching demonstration instrument
By designing a teaching demonstration instrument and utilizing the electrical connection between the crank and the display panel, the relationship between trigonometric functions and the changes in generator induced current was demonstrated. This solved the problem that existing tools could not demonstrate this, reduced teaching costs, and improved students' understanding.
Patent Information
- Application Number
- CN202422686624.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-05
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2034-11-05
AI Technical Summary
Existing teaching tools cannot directly demonstrate the relationship between function values and angles in trigonometric function graphs or the relationship between induced current and coil rotation in generators, making it difficult for students to understand and for teachers to teach.
Design a teaching demonstration instrument comprising a power supply, a crank, an operation panel, and a display panel. Rotation of the crank electrically connects the touch element to multiple display devices, enabling synchronous display of function values and induced current. By combining the color differences of sine, cosine, tangent, and cotangent function graphs, the instrument demonstrates the relationship between function values and angle changes.
It directly demonstrates the relationship between function values and angle and the relationship between induced current and coil rotation, reducing teaching costs and increasing the difficulty for students to understand, while simplifying the teaching process for teachers.
Smart Images
Figure CN223884096U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of teaching aids technology, and more particularly to a teaching demonstration instrument and a physics teaching demonstration instrument. Background Technology
[0002] Trigonometric functions and the principles of generator power generation are important topics in secondary school education. Currently, there are no demonstration instruments that can directly demonstrate the relationship between the function values in the trigonometric function graph and the angle, or the relationship between the induced current generated in the generator and the rotation of the coil. This makes it difficult for students to understand and also makes it difficult for teachers to teach.
[0003] Therefore, there is an urgent need for a teaching demonstration instrument or a physics teaching demonstration instrument to solve the above-mentioned technical problems. Utility Model Content
[0004] The purpose of this invention is to provide a teaching demonstration instrument and a physics teaching demonstration instrument that can solve the problem of not having a demonstration instrument to directly demonstrate the relationship between the function value and the angle in a trigonometric function graph or the relationship between the induced current generated in a generator and the rotation of the coil during the teaching process.
[0005] To achieve this objective, the present invention adopts the following technical solution:
[0006] A teaching demonstration instrument, comprising,
[0007] power supply;
[0008] A crank handle includes a rotating shaft, a contact element, and a grip portion disposed at the upper end of the rotating shaft;
[0009] The control panel is provided with multiple first display devices arranged on the circumference of the same circle. The first connection ends of the multiple first display devices are electrically connected to the first electrode of the power supply. The touch element is electrically connected to the second electrode of the power supply. The touch element is connected to the end of the crank handle adjacent to the control panel. The longitudinal axis of the rotation shaft passes through the center of the circle and is perpendicular to the control panel. During the crank handle is cranked, the touch element rotates and can sequentially and electrically connect to the second connection ends of the multiple first display devices respectively.
[0010] The display panel is provided with a plurality of second display devices, which are arranged on the display panel in any one or a combination of sine function image, cosine function image, tangent function image and cotangent function image, the first connecting end of the plurality of second display devices is electrically connected with the first electrode of the power supply respectively, the plurality of second display devices form a plurality of corresponding groups with the plurality of first display devices respectively, and the corresponding first display devices and second display devices in each group are electrically connected with the touch piece at the same time.
[0011] As an optional solution, the operation plate is provided with a through hole at the center position of the circle, the touch piece is arranged below the operation plate, and the rotating shaft is connected with the touch piece through the through hole.
[0012] As an optional solution, the plurality of first display devices are arranged at equal intervals on the circumference, and the plurality of second display devices arranged on the sine function image, the cosine function image, the tangent function image or the cotangent function image are arranged according to the function value relationship corresponding to the angle of the plurality of first display devices.
[0013] As an optional solution, the color displayed by the second display device located at the wave balance position, the wave peak and the wave trough in the sine function image is different from the color displayed by the second display device located at the non-wave balance position, the non-wave peak and the non-wave trough in the sine function image, and / or
[0014] The color displayed by the second display device located at the wave balance position, the wave peak and the wave trough in the cosine function image is different from the color displayed by the second display device located at the non-wave balance position, the non-wave peak and the non-wave trough in the cosine function image.
[0015] As an optional solution, the color displayed by the second display device located at the balance position, the color displayed by the second display device located at the wave peak and the color displayed by the second display device located at the wave trough in the sine function image are all different, and / or
[0016] The color displayed by the second display device located at the balance position, the color displayed by the second display device located at the wave peak and the color displayed by the second display device located at the wave trough in the cosine function image are all different, and / or
[0017] The colors displayed by the second display devices located at the balance positions are the same.
[0018] As an optional solution, a fixing device is further included, which is used for placing the handle on the operation plate.
[0019] As an optional solution, a transparent protective cover is arranged on the operation plate, the holding part is arranged outside the transparent protective cover, and / or
[0020] The transparent protective cover is arranged above the display plate.
[0021] As an optional solution, two magnets are oppositely arranged, the two magnets are opposite in magnetism, a coil is further arranged on the handle, the coil is located between the two magnets, and the coil can rotate in the magnetic field formed by the two magnets and generate induced current during rotation of the handle.
[0022] As an optional solution, a galvanometer is further arranged, a commutator is further arranged on the handle, the coil is electrically connected with the commutator, an electric brush is arranged outside the commutator, and the electric brush is electrically connected with the galvanometer.
[0023] The application further provides a physical teaching demonstration instrument, comprising,
[0024] A power supply;
[0025] A handle comprising a rotating shaft, a contact piece, a holding part and a coil arranged on the handle, the holding part is connected to an upper end of the rotating shaft;
[0026] A display plate comprising a plurality of second display devices arranged on the display plate in a sine function image and / or a cosine function image mode, first connecting ends of the plurality of second display devices are electrically connected with first electrodes of the power supply respectively;
[0027] Two magnets, the two magnets are oppositely arranged, and the two magnets are opposite in magnetism;
[0028] An operation plate, the contact piece is connected to an end of the handle adjacent to the operation plate, a longitudinal axis of the rotating shaft passes through a center of the circle, and the rotating shaft is perpendicular to the operation plate, the contact piece is electrically connected with second electrodes of the power supply, the coil is located between the two magnets, the coil can rotate in the magnetic field formed by the two magnets and generate induced current during rotation of the handle, the contact piece rotates and can be electrically connected with second connecting ends of the plurality of second display devices respectively in sequence.
[0029] The application has at least the following beneficial effects:
[0030] 1. The teaching demonstration instrument can realize simultaneous display of each corresponding first display device and second display device, and can not only demonstrate the change relationship between function value and angle, but also demonstrate the change relationship between induced current and coil rotation.
[0031] 2. The physical teaching demonstration instrument has low production cost and can demonstrate the change relationship of induced current with the rotation of the coil. BRIEF DESCRIPTION OF DRAWINGS
[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced.
[0033] Figure 1 A structural schematic diagram of a teaching demonstration instrument provided by the embodiment of the present application is shown in the figure.
[0034] Figure 2 A structural schematic diagram of a teaching demonstration instrument provided by the embodiment of the present application is shown in the figure.
[0035] Figure 3 Another angle view of a teaching demonstration instrument provided by the embodiment of the present application is shown in the figure.
[0036] Figure 4 A structural schematic diagram of a teaching demonstration instrument provided by another embodiment of the present application is shown in the figure.
[0037] Figure 5 A structural schematic diagram of a rocking handle provided by the embodiment of the present application is shown in the figure.
[0038] Figure 6 A structural schematic diagram of a magnet device provided by the embodiment of the present application is shown in the figure.
[0039] Figure 7 A structural schematic diagram of a physical teaching demonstration instrument provided by the embodiment of the present application is shown in the figure.
[0040] Reference signs:
[0041] 1, rocking handle; 11, rotating shaft; 12, holding part; 13, coil; 14, commutator; 15, touching piece; 16, fixed part; 2, operation plate; 21, first display device; 3, display plate; 31, second display device; 4, magnet device; 41, magnet; 42, mounting seat; 5, ammeter; 6, transparent protective cover; 7, power supply. DETAILED DESCRIPTION
[0042] In order to more clearly understand the technical means of the present application, and can be implemented according to the content of the specification, the specific embodiments of the present application will be further described in detail below, the following embodiments are used to illustrate the present application, but not to limit the scope of the present application.
[0043] At present, in the teaching process, no demonstration instrument can directly demonstrate the change relationship of function value with angle in trigonometric function image or the change relationship of induced current with coil rotation in generator, and students are difficult to understand it, and the teaching difficulty of teachers is also larger.
[0044] Therefore, as Figures 1 to 7 shown, the embodiment of the utility model provides a kind of teaching demonstration instrument and physical teaching demonstration instrument to solve above-mentioned technical problem.
[0045] Specifically, as Figure 2 and Figure 3As shown, a teaching demonstration instrument includes a power supply 7, a handle 1, an operation plate 2 and a display plate 3; wherein the power supply 7 is used to provide electric energy; the handle 1 includes a rotating shaft 11, a touch piece 15 and a holding part 12 arranged on the upper end of the rotating shaft 11; the operation plate 2 is provided with a plurality of first display devices 21, the plurality of first display devices 21 are arranged on the circumference of a same circle, the plurality of first display devices 21 correspond to different angles respectively, the first connecting ends of the plurality of first display devices 21 are electrically connected with the first electrode of the power supply 7 respectively, the touch piece 15 is electrically connected with the second electrode of the power supply 7, the touch piece 15 is connected at the end adjacent to the operation plate 2 of the handle 1, the longitudinal axis of the rotating shaft 11 passes through the center of the circle, and the rotating shaft 11 is perpendicular to the operation plate 2, in the process of shaking the handle 1, the touch piece 15 rotates and can be electrically connected with the second connecting ends of the plurality of first display devices 21 in turn respectively, so that the plurality of first display devices 21 display in turn; the display plate 3 is provided with a plurality of second display devices 31, the plurality of second display devices 31 are arranged on different display plates 3 in any one of the ways of sine function image, cosine function image, tangent function image and cotangent function image, when the function image needed in teaching is needed, the corresponding display plate 3 is placed together with the operation plate 2, thereby increasing the applicability of the teaching demonstration instrument, of course, the plurality of second display devices 31 can also be arranged on a same display plate 3 in the ways of sine function image, cosine function image, tangent function image and cotangent function image, and the second display devices 31 on the corresponding function image are selected to display according to actual needs, which can reduce the manufacturing cost of the teaching demonstration instrument and also can reduce the storage space required when the teaching demonstration instrument is stored; the first connecting ends of the plurality of second display devices 31 are electrically connected with the first electrode of the power supply 7 respectively, the plurality of second display devices 31 correspond to the plurality of first display devices 21 respectively, the plurality of second display devices 31 and the plurality of first display devices 21 are divided into a plurality of groups according to the positions of the angles where the first display devices 21 are located and the function values where the second display devices 31 are located, the angle here refers to the included angle between the initial rotating position of the touch piece 15 and the radius where the first display devices 21 in each group are located, the corresponding first display devices 21 and second display devices 31 in each group are electrically connected with the touch piece 15 at the same time, the corresponding first display devices 21 and second display devices 31 in each group are displayed at the same time, thereby directly reflecting the change relationship between the function value and the angle. The first electrode in the application is the positive electrode or the negative electrode of the power supply 7, the second electrode is the positive electrode or the negative electrode of the power supply 7, the first electrode is used in cooperation with the second electrode, the operation plate 2 and the display plate 3 can be two split ones, the operation plate 2 and the display plate 3 can also be a whole, the first display devices 21 and the second display devices 31 can be light emitting diodes or other light sources.
[0046] In some embodiments, in order to facilitate fixing the handle 1 and ensuring the appearance of the device is beautiful, a through hole is arranged at the center of the circle on the operation plate 2, the touching piece 15 is arranged below the operation plate 2, the rotating shaft 11 is connected with the touching piece 15 through the through hole, and the rotating shaft 11 and the touching piece 15 can be connected together through adhesion, welding or a threaded structure.
[0047] In some embodiments, the plurality of first display devices 21 are arranged equidistantly on the circumference, and the plurality of second display devices 31 arranged on the sine function image, the cosine function image, the tangent function image or the cotangent function image arrange the function value relationship corresponding to the angle at which the plurality of first display devices 21 are located.
[0048] In some embodiments, in order to have a better demonstration effect, the colors displayed by the second display devices 31 located at the balanced position, the wave crest and the wave trough of the sine function image are different from the colors displayed by the second display devices 31 located at the non-balanced position, the non-wave crest and the non-wave trough of the sine function image, and of course, the colors displayed by the second display devices 31 located at the balanced position, the wave crest and the wave trough of the cosine function image are different from the colors displayed by the second display devices 31 located at the non-balanced position, the non-wave crest and the non-wave trough of the cosine function image.
[0049] In some embodiments, in order to facilitate the teacher to explain the balanced position, the wave crest and the wave trough of the sine function image in the teaching process, the colors displayed by the second display devices 31 located at the balanced position, the wave crest and the wave trough of the sine function image are different, and of course, the colors displayed by the second display devices 31 located at the balanced position, the wave crest and the wave trough of the cosine function image are different, and the colors displayed by the second display devices 31 located at the balanced position, the wave crest and the wave trough of the cosine function image are different.
[0050] In some embodiments, in order to facilitate placing the handle 1 on the surface of the operation plate 2, the application further comprises a fixing device, the handle 1 is placed on the operation plate 2 through the fixing device, the touching piece 15 is adjacent to or contacts the upper surface of the operation plate 2, the handle 1 can be shaken in the fixing device, and the fixing device can be a support.
[0051] As shown in Figure 1 In some embodiments, in order to avoid dust falling on the operation plate 2 and affecting the observation and demonstration effect, the application further comprises a transparent protective cover 6, the transparent protective cover 6 is arranged on the operation plate 2, the holding part 12 is arranged outside the transparent protective cover 6, and of course, the transparent protective cover 6 can be arranged above the display plate 3.
[0052] As shown in Figure 4 ,Figure 5 and Figure 6 As shown in FIG. 1, in some embodiments, in order to demonstrate the relationship between the induced current generated in the generator and the rotation of the coil, a fixed part 16 is detachably installed on the handle 1, the fixed part 16 is provided with a coil 13, two magnet devices 4 with opposite magnetic properties are oppositely arranged on the operation plate 2, the magnet device 4 comprises a mounting seat 42 and two magnets 41 with opposite magnetic properties, the mounting seat 42 is provided with a receiving groove, and the magnet 41 is installed in the receiving groove, the coil 13 is located between the two magnet devices 4, during the shaking of the handle 1, the coil 13 can rotate in the magnetic field formed by the two magnets 41 and generate an induced current, of course, the two magnets 41 with opposite magnetic properties can be arranged in other positions to generate an induced current in the coil 13, and the arrangement is not limited.
[0053] In some embodiments, in order to detect the generated induced current, the application further comprises a galvanometer 5, the handle 1 is further provided with a commutator 14, the coil 13 is electrically connected with the commutator 14, the commutator 14 is externally provided with a brush, and the brush is electrically connected with the galvanometer 5.
[0054] The application further provides a physical teaching demonstration instrument, as shown in FIG. 2, the physical teaching demonstration instrument is different from the teaching demonstration instrument in that, in order to reduce the production cost, the operation plate 2 is not provided with the first display device 21, and the other parts are the same as those of the teaching demonstration instrument, and details are not repeated here. Figure 7
[0055] The above description is only preferred embodiments of the application, and is not used to limit the application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principles of the application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the application.
Claims
1. A teaching demonstration apparatus, characterized in that, The utility model relates to a kind of display device, including, Power supply (7); Handle (1), including rotating shaft (11), touch piece (15) and the holding portion (12) being arranged at the upper end of rotating shaft (11); Operating plate (2) is equipped with multiple first display devices (21), the multiple first display devices (21) are respectively arranged on the circumference of a circle, the first connecting end of the multiple first display devices (21) is respectively electrically connected with the first electrode of the power supply (7), the touch piece (15) is electrically connected with the second electrode of the power supply (7), the touch piece (15) is connected at the end adjacent to the handle (1) and the operating plate (2), the longitudinal axis of the rotating shaft (11) passes through the center of the circle, and the rotating shaft (11) is perpendicular to the operating plate (2), during the shaking of the handle (1), the touch piece (15) rotates and can be electrically connected with the second connecting end of the multiple first display devices (21) in turn respectively; Display plate (3) is equipped with multiple second display devices (31), the multiple second display devices (31) are arranged on the display plate (3) in any one or more combinations of sine function image, cosine function image, tangent function image, cotangent function image, the first connecting end of the multiple second display devices (31) is respectively electrically connected with the first electrode of the power supply (7), the multiple second display devices (31) respectively form multiple corresponding groups with the multiple first display devices (21), and the corresponding first display device (21) and the second display device (31) in each group are electrically connected with the touch piece (15) simultaneously.
2. The teaching demonstration instrument of claim 1, wherein, The operating plate (2) is provided with a through hole at the center of the circle, and the touch piece (15) is arranged below the operating plate (2), and the rotating shaft (11) is connected with the touch piece (15) through the through hole.
3. The teaching demonstration instrument of claim 1, wherein, The multiple first display devices (21) are equidistantly arranged on the circumference, and the multiple second display devices (31) on the sine function image, the cosine function image, the tangent function image or the cotangent function image are arranged according to the function value relationship corresponding to the angle of the multiple first display devices (21).
4. The teaching demonstration instrument of claim 3, wherein, The colors displayed by the second display devices (31) located at the wave balance position, the wave peak and the wave trough in the sine function image are different from the colors displayed by the second display devices (31) located at the non-wave balance position, the non-wave peak and the non-wave trough in the sine function image, and / or The colors displayed by the second display devices (31) located at the wave balance position, the wave peak and the wave trough in the cosine function image are different from the colors displayed by the second display devices (31) located at the non-wave balance position, the non-wave peak and the non-wave trough in the sine function image.
5. The teaching demonstration instrument of claim 4, wherein, The colors displayed by the second display devices (31) located at the balance position, the wave peak and the wave trough in the sine function image are all different, and / or The colors displayed by the second display devices (31) located at the balance position, the wave peak and the wave trough in the sine function image are all different. The color displayed by the second display device (31) at the equilibrium position, the color displayed by the second display device (31) at the wave crest, the color displayed by the second display device (31) at the wave trough are all different, and / or The colors displayed by the second display device (31) at the equilibrium position are the same.
6. The teaching demonstration instrument of claim 1, wherein, Further comprising a fixing device for placing the handle (1) on the operation plate (2).
7. The teaching demonstration instrument of claim 1, wherein, Further comprising a transparent protective cover (6) arranged on the operation plate (2), and the holding part (12) is arranged outside the transparent protective cover (6), and / or The transparent protective cover (6) is arranged above the display plate (3).
8. The teaching demonstration apparatus according to any one of claims 1-7, wherein, Further comprising two magnets (41) arranged oppositely, the two magnets (41) are opposite in magnetism, and the handle (1) is further provided with a coil (13) arranged between the two magnets (41), and during the shaking of the handle (1), the coil (13) can rotate in the magnetic field formed by the two magnets (41) and generate induced current.
9. The teaching demonstration instrument of claim 8, wherein, Further comprising an ammeter (5), and the handle (1) is further provided with a commutator (14), the coil (13) is electrically connected with the commutator (14), and the commutator (14) is externally provided with a brush, and the brush is electrically connected with the ammeter (5).
10. A physical teaching demonstration instrument, characterized in that, It comprises, a power supply (7); a handle (1) comprising a rotating shaft (11), a touching part (15), a holding part (12) and a coil (13) arranged on the handle (1), and the holding part (12) is connected to the upper end of the rotating shaft (11); a display plate (3) provided with a plurality of second display devices (31), the plurality of second display devices (31) are arranged on the display plate (3) in the form of a sine function image and / or a cosine function image, and the first connecting end of the plurality of second display devices (31) is electrically connected with the first electrode of the power supply (7) respectively; two magnets (41) arranged oppositely, and the two magnets (41) are opposite in magnetism; an operation plate (2), the touching part (15) is connected to the end of the handle (1) adjacent to the operation plate (2), the longitudinal axis of the rotating shaft (11) passes through the center of a circle, and the rotating shaft (11) is perpendicular to the operation plate (2), the touching part (15) is electrically connected with the second electrode of the power supply (7), the coil (13) is located between the two magnets (41), and during the shaking of the handle (1), the coil (13) can rotate in the magnetic field formed by the two magnets (41) and generate induced current, and the touching part (15) rotates and can be electrically connected with the second connecting end of the plurality of second display devices (31) in turn.