Multifunctional stereometric teaching remote control teaching aid

Abstract

The application is a multifunctional remote control teaching aid for teaching stereometric geometry, belonging to the field of teaching. It is technically innovative to realize the dynamic space figure display effect of "one box with multiple uses, one press and it comes out", and to visualize the abstract line segment in space. The device includes a storage box and a detachable remote control. The box stores multiple replaceable folding skeleton modules corresponding to cubes, cuboids, cylinders, etc. The remote control is provided with a selection button. After pressing, the elastic expansion mechanism (torsion spring, telescopic sleeve and micro motor) in the corresponding module is automatically unlocked, so that the skeleton is unfolded from the flat folded state and locked as a three-dimensional frame. The remote control is also provided with a laser two-point connection system. Two movable micro laser heads project red laser beams in the frame to form a visible straight line between two points in space or a closed figure hidden inside the geometric body. The device is compact in structure, intuitive in operation, safe and reliable, and can significantly improve the teaching effect of stereometric geometry.

Description

Technical Field

[0001] This invention is a multifunctional remote-controlled teaching aid for solid geometry, belonging to the field of education. Background Technology

[0002] In teaching solid geometry, most common teaching aids are static models of a single shape. Teachers need to carry multiple models and cannot dynamically demonstrate the construction process "from plane to solid" with a single click. Furthermore, when explaining lines connecting two points in space, such as diagonals, or closed figures hidden inside geometric bodies, teachers can only rely on drawing diagrams or verbal descriptions, making it difficult for students to develop vivid spatial imagination and seriously affecting the quality of teaching.

[0003] The purpose of this invention is to solve the difficulties and pain points of existing teaching aids, such as their limited form, inability to demonstrate dynamically, and lack of intuitiveness in displaying spatial line segments and hidden spatial graphics within geometric bodies. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a multifunctional remote-controlled teaching aid for solid geometry, enabling dynamic one-click intuitive demonstration of various geometric shapes and intuitive display of spatial line segments. The specific technical solution adopted is as follows: A multifunctional remote-controlled teaching tool for solid geometry includes a storage box and a detachable remote control. The storage box contains a cavity housing a deformable solid skeleton device in a folded state. The front of the remote control features multiple geometry selection buttons (cube, cuboid, cylinder, cone, sphere, ellipsoid, pyramid) and an LED laser control button. The remote control contains a wireless transmitting module, and the deformable solid skeleton module's frame contains a corresponding wireless receiving module, a micro-motor, and an elastic unfolding mechanism. When a geometry selection button is pressed, the remote control emits a corresponding coded signal. The receiving module drives the micro-motor to unlock and trigger the corresponding elastic unfolding mechanism, causing the folded skeleton frame to automatically unfold and lock into the outline of the geometry within seconds. The LED laser control button allows selection of any two points on the unfolded geometry frame. Two micro-laser heads emit point-to-point red laser beams, causing the two laser beams to intersect in space along a straight line, visually displaying the volume diagonal or any spatial line segment between the two points.

[0005] Preferably, the deformable three-dimensional skeleton module device can form cubes, cuboids, cylinders, cones, spheres, ellipsoids, and pyramids with a single click. Each geometric skeleton module is compressed into a flat shape (thickness not exceeding 15mm, length not exceeding 120mm) when retracted and stored, and has a uniform magnetic interface for insertion into the corresponding slot in the receiving cavity. The storage box is equipped with a spring-loaded ejection mechanism; pressing the "eject" button on the side of the box automatically ejects the skeleton module, making it convenient to use.

[0006] Preferably, the specific structure of the cube skeleton module is as follows: it consists of 12 skeleton frame rods as edge rods, connected by 8 universal hinge nodes. Each edge rod is a two-stage telescopic sleeve, with a pre-compression spring between the inner and outer tubes; each universal hinge node contains a torsion spring and a limiting device. In the folded state, all edge rods are retracted, the torsion springs are charged, and the ratchet limiting device is unlocked. Upon receiving a remote control signal, a micro motor drives a dial to rotate, releasing the locking pins at all nodes. The torsion springs drive each edge rod to rotate around the node until they are perpendicular to each other. Simultaneously, the springs in the telescopic sleeves push out the inner tubes, causing the edge rods to extend to a preset length, ultimately automatically forming a cube frame with a side length of 80mm.

[0007] Preferably, the cuboid frame module has a structure similar to the cube module, but the edge rods in different directions have different telescopic limit points. Specifically: the edge rods in the length direction (X-axis) consist of two telescopic tubes with a maximum length of 120mm; the maximum length in the width direction (Y-axis) is 80mm; and the maximum length in the height direction (Z-axis) is 60mm. Each telescopic tube in each direction has elastic buckles at different positions, which automatically engage with the corresponding length positions when the frame rods are extended. The length-width-height ratio (e.g., 2:1:1, 3:2:1, etc.) can be further selected via the "cuboid" button on the remote control.

[0008] Preferably, the cylindrical frame module has the following structure: it includes an upper and lower circular base, with eight hinge points evenly distributed on the circumference of each base. The upper and lower corresponding hinge points are connected by retractable longitudinal connecting rods. A central slider that can slide up and down is located at the center of each longitudinal connecting rod, and the central slider is hinged to the middle of each longitudinal connecting rod via radial support rods. When the remote control issues an unfolding signal command, the built-in micro motor pulls the central slider towards the center. Once the base expands into a circle, the springs inside the longitudinal connecting rods extend it to a preset height, and then a ratchet stops it, thus forming a standard cylindrical frame.

[0009] Preferably, the conical skeleton module has the following structure: a bottom circle and a top vertex node. The bottom circle is similar to a cylinder, and the vertex node is connected to a hinge point on the bottom ring via eight retractable diagonal connecting rods. The middle parts of all the diagonal connecting rods are also connected by a sliding constraint ring. When unfolded, a micro motor drives the constraint ring to move towards the vertex, causing the diagonal connecting rods to open synchronously, and the bottom ring to expand into a circle at the same time, forming a conical frame.

[0010] Preferably, the spherical skeleton module is structured as follows: it consists of three mutually perpendicular elliptical rings (a meridian ring, a parallel ring, and an equatorial ring) hinged together by a central universal joint. Upon receiving a command to unfold the sphere, a micro motor drives the three rings to automatically spring open and return to their mutually perpendicular elliptical shapes, together forming the meridian and parallel skeleton of a sphere.

[0011] Preferably, the LED laser two-point connection system includes two miniature red laser heads, each mounted on an independently movable slider. Each slider can slide along the edge of the geometric frame and lock at any position. The remote control has two control buttons, "Start A" and "Start B," and a "Connect" button (i.e., the LED laser control button). In use, the teacher first moves the first laser head to the target position (e.g., a vertex) and presses "Start A"; then moves the second laser head to another target position (e.g., a diagonal vertex) and presses "Start B"; finally, the teacher presses the "Connect" button (i.e., the LED laser control button). The two laser heads simultaneously emit fine, collimated red laser beams, which automatically intersect in space to form a visible red straight line segment (i.e., a spatial line segment between two points). This straight line segment can be clearly displayed inside the geometric body, facilitating students' observation of the diagonal of the body or the line connecting any two points. The remote-controlled fixed-point connection allows for multiple presses of the "Start A" and "Start B" buttons to perform connection operations, visually displaying multiple line segments, and also visually displaying closed figures hidden inside the geometric body. After use, all laser connection operations can be cleared with a single click using the power off button (309). The remote control also has an automatic shutdown protection device that shuts off the laser connection after 30 seconds of inactivity. To prevent laser damage to the eyes, the laser power is limited to ≤1mW, and the beam is projected only within the frame area. It is also equipped with an automatic shutdown timer (automatically shuts off after 30 seconds).

[0012] Preferably, the remote control also integrates an electronic gyroscope and an accelerometer, which can control the movement direction of the laser head according to the tilt posture of the remote control, realizing motion control. The front of the remote control is equipped with an OLED display screen, which displays the current geometry type, the coordinates (relative coordinates) of the currently selected point, and the length of the laser line in real time.

[0013] Preferably, the bottom of the storage box is equipped with a magnetic base and an anti-slip silicone pad, allowing it to be stably attached to a metal blackboard or placed on a metal teacher's workbench (making it easier to project 3D transformations onto a screen in real time). The storage box contains a USB charging port to power the remote control and the micro-motors within the frame module. All joints and connecting rods of the frame module are made of lightweight, soft ABS or nylon material, offering good flexibility, light weight, and impact resistance.

[0014] Compared with existing technologies, the beneficial effects of this invention are as follows: This invention uses a portable storage box combined with a foldable three-dimensional skeleton module device, and with the help of a remote control, different geometric shapes can be popped out with one click, achieving "one box, multiple uses, one-click pop-out," greatly enriching the content of teaching demonstrations. Utilizing an elastic unfolding device and a motor drive device, the originally complex folding structure can automatically, quickly, and accurately form a standard geometric frame. The innovative introduction of a laser two-point connection system makes abstract three-dimensional geometric line segments (such as solid diagonals) visual and interactive, allowing students to intuitively see the straight line between two points in space passing through the interior of the geometric shape, significantly improving the educational effect. The entire system is compact, simple to operate, safe, and reliable, suitable for classroom teaching in primary, secondary, and tertiary schools, and has broad application value. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the unfolded state of the cube skeleton module;

[0016] Figure 2 This is a schematic diagram of the unfolded state of the cuboid skeleton module;

[0017] Figure 3 This is a schematic diagram of the unfolded state of the cone-shaped skeleton module;

[0018] Figure 4 This is a schematic diagram of the unfolded structure of the pyramid skeleton module;

[0019] Figure 5 This is a schematic diagram of the unfolded structure of the cylindrical skeleton module;

[0020] Figure 6 This is a schematic diagram of the unfolded structure of the ellipsoid skeleton module;

[0021] Figure 7 This is a schematic diagram of the unfolded state of the spherical skeleton module;

[0022] Figure 8 This is a schematic diagram illustrating the working principle of a laser two-point connection system (taking the diagonal of a cube as an example).

[0023] Figure 9 A schematic diagram of the button layout on the front of the remote control; Figure 10 for Figure 1 Internal structure diagram of the frame rod 2 of the medium skeleton module

[0024] In the diagram: 1. Storage box, 2. Skeleton module frame rod, 3. Remote control, 301. Geometry selection button, 302. LED laser control button, 303. Laser head slider A, 304. Laser head slider B, 305. Universal hinge node, 306. OLED display screen, 307. Red laser beam, 308. Reset button, 4. Center slider, 5. Sphere skeleton module unfolding, 501. Meridian ring, 502. Latitude ring, 503. Equatorial ring, 504. Center universal knot. Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0026] Example 1 (Cube Module and Laser Connection) Reference Figure 1-9 A multifunctional remote-controlled teaching aid for solid geometry includes a rectangular storage box 1 (150mm long, 80mm wide, and 40mm high), with a spring-loaded mechanism and magnetic electrode contacts at the bottom of its internal cavity. The cube-shaped frame module, when folded, is a flat strip (110mm long, 10mm wide, and 8mm high), with 12 internal edge rods (each a two-stage telescopic sleeve, 4×4mm outer tube, 3×3mm inner tube, containing a spring) connected by 8 universal hinge nodes 305 (containing torsion springs and miniature electromagnetic locking pins).

[0027] In use, the teacher picks up remote control 3 (120×50×15mm, built-in lithium battery), locates 301, and selects the "cube" geometry selection button. Remote control 3 sends an unfolding command via 2.4G wireless signal. After receiving the signal, the wireless receiver module inside the skeleton frame rod 2 controls the micro motor (6mm in diameter, model N20) to rotate the dial, sequentially activating the locking pins at the 8 nodes. All torsion springs activate simultaneously, pushing the edge rods from a parallel state to perpendicular to each other; at the same time, the compression spring inside the telescopic sleeve pushes out the inner tube until the elastic buckle locks at the preset length (80mm). The entire process takes about 0.8 seconds, and a complete cube frame automatically pops open and rigidly locks in place.

[0028] Next, the diagonal of the cube is demonstrated: The teacher presses the LED laser control button 302 on the remote control 3, moving the light spot to the lower left front vertex of the cube (coordinates 0, 0, 80) to set point A, and presses the "Start A" button 303; then controls the laser head slider to move to the upper right rear vertex (coordinates 80, 80, 0) to set point B, and presses the "Start B" button 304; finally, the LED laser control button 302 is pressed again to connect points A and B. In this way, both laser heads simultaneously emit red laser beams 307 (wavelength 650nm, power 0.8mW). Since the emission directions of both laser heads are pointed towards the mirror at the preset position of the other (in actual implementation, a two-dimensional rotating mirror can be added inside each laser head to automatically calculate the angle), the two laser beams intersect in space in a straight line. This straight line runs from point A to point B, passing through the internal cavity of the cube, and is clearly visible. The OLE display screen 306 will display "Diagonal length of the cube = 138.56mm". The laser line will automatically turn off after 30 seconds, or it can be turned off by pressing the "off" button again.

[0029] Example 2 (Cylinder Module) Reference Figure 9 Press the "Reset" button 308 to return to the storage state, then press the "Cylinder" button on the remote control 3. The receiver module drives the internal micro motor to rotate, and the motor pushes the central slider 4 from one end to the middle through the telescopic sleeve rod. The central slider 4 is hinged to the middle of the 8 longitudinal connecting rods through radial support rods. When the central slider 4 moves to the midpoint, the longitudinal connecting rods are stretched to a vertical state, and the shape memory alloy wires on the upper and lower bottom surfaces of the telescopic sleeve are energized (current 0.3A, lasting 0.2 seconds) and expand into a circle (diameter 60mm). The telescopic springs in the longitudinal connecting rods automatically extend to the preset height (80mm) ratchet limit, forming a complete and stable cylindrical frame.

[0030] Example 3 (Sphere Module) Reference Figure 7 The spherical skeleton module unfolds. After pressing the "Sphere" button, three rings (warp ring 501, parallel ring 502, and equatorial ring 503) quickly form. The control circuit heats the shape memory alloy wires within the three rings (total current 0.8A, time limit 1 second), simultaneously releasing the locking mechanism of the central universal joint 504. Under the restoring force of the shape memory alloy, the three rings automatically spring open and become perpendicular to each other, forming a spherical warp and parallel skeleton with a diameter of approximately 90mm. Due to the repeatable bending properties of the shape memory alloy, this module can be folded and unfolded more than 500 times.

[0031] Laser Safety Instructions: All laser heads are equipped with built-in human body sensors that automatically cut off the laser when a hand or other object is detected too close to the beam path (<5cm); and the laser power meets the safety standards for Class 1 laser products, making it suitable for classroom use.

[0032] The above description describes specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. This specification describes embodiments to help understand the basic method and core idea of ​​the present invention; however, the embodiments do not necessarily include only one independent technical solution (for example, micro motors are not limited to N20). This descriptive method is merely for clarity. Those skilled in the art should consider the specification as a whole to form other embodiments that can be understood by those skilled in the art. Within the technical scope disclosed in the present invention, those skilled in the art can combine or optimize the technical solutions and inventive concepts of the present invention in terms of specific embodiments and application scope, and all such combinations or optimizations should be covered within the scope of protection of the present invention. The content of this specification should not be construed as a limitation of the present invention.

Claims

1. A multifunctional remote-controlled teaching aid for solid geometry, characterized in that: The device features one-click creation of 3D graphics and one-click restoration to its stored state. It comprises three main parts: a storage box (1), a skeleton module frame rod (2), and a remote control (3). The storage box (1) contains the 3D skeleton module frame rod (2), which corresponds to geometric shapes such as cubes, cuboids, and cylinders. The deformable 3D skeleton module frame rod (2) is an elastic unfolding mechanism, consisting of telescopic inner and outer sleeves (6), a torsion spring (7), and a micro motor (8). The micro motor has a control panel (801) that controls the operation of the micro motor (8). A wireless receiver (9) is installed on the control panel (801), and the wireless receiver (9) wirelessly communicates with the remote control (3). The remote control (3) has seven selection buttons; pressing one button corresponds to the elastic shape within the geometric module. The unfolding mechanism (torsion spring, telescopic sleeve and micro motor) automatically unlocks, pops open from the flat folded state and locks into a three-dimensional frame. Pressing the reset button (308) causes the skeleton module frame rod (2) to quickly return to its initial storage state. The remote control is equipped with a laser two-point connection system. Through two movable micro laser heads, red laser beams are projected into the unfolded geometric frame to visualize the line segments between two abstract points in space. The laser two-point connection system integrated in the remote control (3) has a sliding laser head. Through the LED laser control button (302), laser head slider A (303), laser head slider B (304), and remote control fixed-point connection, multiple line segments can be connected, which can intuitively display the abstract closed graphics hidden inside the geometric body. All laser two-point connection operations are cleared by the close button (309). The remote control is also equipped with a 30-second inactivity automatic shut-off protection device, that is, an automatic laser connection extinguishing protection device.

2. The multifunctional solid geometry teaching remote control tool according to claim 1, characterized in that: The bottom of the storage box (1) is equipped with magnetic attraction and anti-slip silicone. The storage box has a spring pop-out mechanism that can pop out the skeleton module with one click.

3. The multifunctional solid geometry teaching remote control tool according to claim 1, characterized in that: The skeleton module frame rod (2) is equipped with a wireless receiver (9). After remote unlocking, the torsion spring (7) is driven by the micro motor (8) to automatically unfold and lock, quickly forming a standard geometric frame.

4. The multifunctional solid geometry teaching remote control tool according to claim 1, characterized in that: An electronic gyroscope and an accelerometer are integrated inside the remote controller (3), which can control the movement direction of the laser head according to the tilt posture of the remote controller, so as to realize body control.

5. The multifunctional solid geometry teaching remote control tool according to claim 1, characterized in that: The remote control (3) is equipped with an OLED display (306), and the storage box (1) can provide magnetic charging, making it suitable for classroom teaching.

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