Teaching demonstration device for permanent magnet direct current motor
By using the angle circle to adjust the position of the permanent magnet and the limit bending bar to stabilize the rotor rotation in the permanent magnet DC motor teaching demonstration device, the problems of poor teaching effect and rotor jitter in the existing device are solved, and a more efficient teaching effect and Stable rotation.
Patent Information
- Application Number
- CN202421119664.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-22
AI Technical Summary
When the existing teaching demonstration device demonstrates permanent magnet DC motor, it cannot adjust the position of the permanent magnet, resulting in poor teaching effect. At the same time, the rotor is prone to jitter and position deviation during rotation, affecting the teaching effect.
Designed a kind of permanent magnetic DC motor teaching demonstration device, which drives the permanent magnet to adjust the position through the angle circle to achieve the demonstration of students and improve the teaching effect; Stable rotation to avoid shaking.
The angle circle drives the permanent magnet to adjust its position, which improves the teaching effect; the use of limit curved bars ensures the stable rotation of the rotor, avoids jitter and position deviation, and improves the visibility and accuracy of teaching.
Smart Images
Figure CN222394473U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field related to motor teaching, and particularly relates to a permanent magnet DC motor teaching demonstration device. Background Art
[0002] The principle of the motor involves the knowledge of electromagnetism. In the teaching of the motor, it is difficult for students to master the abstract theories such as the principle, structure and function of the DC motor because there is no demonstration device. In order to help students understand the structure, principle and other related contents of the DC motor more intuitively, a device for teaching demonstration of the DC motor is designed. Through this device, the working principle and structure of the DC motor can be explained, and the forward and reverse functions and speed regulation functions of the DC motor can be demonstrated. The demonstration teaching aids can increase the interaction between teachers and students, reflect the concept of students as the main body in the teaching process, improve the teaching efficiency, and allow students to operate by themselves, explore the principles by themselves, deepen their understanding, and stimulate students' innovative consciousness in the process of learning knowledge, and improve scientific literacy. It conforms to the cognitive law of students from perceptual cognition to theoretical cognition.
[0003] However, the existing teaching demonstration device does not have the function of adjusting the position of the permanent magnet when in use. Therefore, during the demonstration process, the permanent magnet easily covers the rotor, resulting in poor teaching demonstration effect. At the same time, when using the teaching demonstration device, the rotor will be controlled to rotate, but because it does not have the function of limiting the rotor shaft, the rotor is prone to shaking during rotation, resulting in the rotor position being biased, which affects the teaching demonstration work. To this end, we provide a permanent magnet DC motor teaching demonstration device to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a permanent magnet DC motor teaching demonstration device, which drives the permanent magnet to adjust its position through an angle ring to facilitate demonstration to students and improve teaching effects. At the same time, limit bending strips are hung on the circumferential side of shaft rod one and shaft rod two to ensure that the rotor can rotate stably and avoid excessive shaking.
[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:
[0006] The utility model is a teaching demonstration device for a permanent magnet DC motor, comprising a base plate; symmetrically arranged support plates are fixed on the left and right parts of the upper end surface of the base plate, a rotor is arranged at a position between the two support plates, angle rings are arranged on the left and right parts of the outer periphery of the rotor, two symmetrically arranged permanent magnets are arranged at a position between the two angle rings, and the permanent magnets are fixedly connected to the inner side walls of the angle rings, the lower end surfaces of the angle rings are provided with positioning blocks fixedly connected to the upper end surface of the base plate, a commutator is fixed to the left axial end of the rotor, carbon brushes are arranged at the front positions of the peripheral sides of the commutator, a battery is fixed to the left part of the upper end surface of the base plate, the carbon brushes are electrically connected to the battery through cables, a shaft rod 1 is fixed to the right end of the rotor, a shaft rod 2 is fixed to the left end of the commutator, limiting bending strips hung on the peripheral sides of the shaft rod 1 and the shaft rod 2 are arranged on the opposite end surfaces of the two support plates, and a movable box is fixed to the position of the upper end surface of the base plate corresponding to the limiting bending strip.
[0007] The utility model is further configured that a rotating opening is opened at the middle position of the upper end surface of the support plate, and the shaft rod 1 and the shaft rod 2 are respectively rotatably arranged at the corresponding inner positions of the rotating opening.
[0008] The utility model is further configured that a mounting plate is fixed to the upper end surface of the support plate located at the left end of the bottom plate, a power supply groove is opened on the upper end surface of the mounting plate, and the carbon brush is fixed at the corresponding internal position of the power supply groove.
[0009] The utility model is further configured such that an arc opening is provided on the upper end surface of the positioning block, and the angle ring is rotatably arranged at an inner position of the arc opening.
[0010] The utility model is further configured that a plurality of ball blocks evenly distributed in an annular shape are fixed to the left and right end surfaces of the angle ring, and ball openings for use with the ball blocks are opened at positions of the inner side surfaces of the arc openings corresponding to the positions of the ball blocks.
[0011] The utility model is further configured that a square opening connected to the interior of the movable box is provided at the middle position of the upper end surface thereof, and a movable square column which slides inside the square opening is provided on the lower end surface of the limiting bending strip.
[0012] The utility model is further configured such that a baffle connected to the bottom surface of the movable box is fixed on the lower end surface of the movable square column, springs are fixed on the upper end surfaces of the baffles on the left and right sides of the movable square column, and the upper end surfaces of the springs are connected to the top surface of the movable box.
[0013] The utility model is further configured that a rotating block is fixed at the middle position of the upper end surface of the movable square column, and a ring plate rotatably connected to the rotating block is fixed at the front and rear positions of the lower end surface of the limiting bending strip.
[0014] The utility model has the following beneficial effects:
[0015] 1. When the utility model is in use and the teaching viewing angle needs to be adjusted, the user can control the angle ring to rotate inside the positioning block, and then the angle ring will drive the two permanent magnets to rotate synchronously, so that the space between the two permanent magnets can be rotated to different positions, so as to demonstrate to students and improve the teaching effect.
[0016] 2. When the utility model is in use, the limit bending bar is moved upward, and then the limit bending bar is moved to the upper position of the shaft rod one and the shaft rod two, thereby controlling the rotation of the limit bending bar, and then the limit bending bar is directly hung on the peripheral position of the shaft rod one and the shaft rod two, so as to limit the rotation of the rotor, thereby ensuring the stable rotation of the rotor and avoiding excessive shaking.
[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0019] Figure 1 The figure is a structural diagram of a permanent magnet DC motor teaching demonstration device.
[0020] Figure 2 This is a structural diagram of the limit bending strip in the utility model.
[0021] Figure 3 This is an assembly diagram of the angle ring, positioning block and permanent magnet block in the utility model.
[0022] Figure 4 This is a structural diagram of the bottom plate of the utility model.
[0023] Figure 5 It is a structural diagram of the positioning block in the utility model.
[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:
[0025] 1-base plate, 101-support plate, 102-mounting plate, 103-power slot, 104-rotating mouth, 2-rotor, 201-axle rod one, 3-angle ring, 301-ball block, 4-positioning block, 401-arc mouth, 402-ball mouth, 5-commutator, 502-axle rod two, 6-battery, 7-limit bending strip, 701-movable box, 702-movable square column, 703-square mouth, 704-rotating block, 705-baffle, 706-spring, 707-ring plate, 8-permanent magnet, 9-carbon brush. DETAILED DESCRIPTION
[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Specific embodiment 1
[0028] See also Figure 1-5 The utility model is a teaching demonstration device for a permanent magnet DC motor. The permanent magnet 8 is driven by an angle ring 3 to adjust its position, so as to facilitate demonstration to students and improve the teaching effect. At the same time, the limit bending strip 7 is hung on the circumferential side of the shaft rod 1 201 and the shaft rod 2 502 to ensure that the rotor 2 can rotate stably and avoid excessive shaking.
[0029] Specifically, the bottom plate 1; the left and right parts of the upper end surface of the bottom plate 1 are fixed with symmetrically arranged support plates 101, the position between the two support plates 101 is provided with a rotor 2, the left and right parts of the outer periphery of the rotor 2 are provided with angle rings 3, the position between the two angle rings 3 is provided with two symmetrically arranged permanent magnets 8, and the permanent magnets 8 are fixedly connected to the inner side wall of the angle ring 3, the lower end surface of the angle ring 3 is provided with a positioning block 4 fixedly connected to the upper end surface of the bottom plate 1, and the left shaft end of the rotor 2 is fixed with a change The commutator 5 and the commutator 5 are both provided with carbon brushes 9 at the front position of the peripheral side, a battery 6 is fixed to the left part of the upper end surface of the base plate 1, and the carbon brush 9 is electrically connected to the battery 6 through a cable. A shaft rod 1 201 is fixed to the right end of the rotor 2, and a shaft rod 2 502 is fixed to the left end of the commutator 5. The opposite end surfaces of the two support plates 101 are both provided with limiting bent strips 7 hung on the peripheral positions of the shaft rod 1 201 and the shaft rod 2 502, and a movable box 701 is fixed to the upper end surface of the base plate 1 at the position corresponding to the limiting bent strip 7.
[0030] The operation process of this embodiment is as follows: through the setting and use of the above-mentioned structure, the battery 6 is controlled to work on the carbon brush 9, thereby the rotor 2 is energized, and then the two symmetrically arranged permanent magnets 8 will control the rotor 2 to rotate, and when the power introduced into the commutator 5 is swapped, the rotor 2 can be reversed, and the angle of the two carbon brushes 9 introduced into the commutator 5 is changed, and the rotation speed of the rotor 2 changes. At the same time, when it is necessary to adjust the teaching perspective, the user can control the angle ring 3 to rotate inside the positioning block 4, and then the angle ring 3 will drive the two permanent magnets 8 to rotate synchronously, so that the space between the two permanent magnets 8 can be rotated to different positions for demonstration to students. At the same time, in order to ensure the stable rotation of the rotor 2, the limit bending bar 7 can be moved upward, and then the limit bending bar 7 will move to the upper position of the shaft rod 1 201 and the shaft rod 2 502, thereby controlling the limit bending bar 7 to rotate, and then the limit bending bar 7 will be directly hung on the peripheral position of the shaft rod 1 201 and the shaft rod 2 502, so as to limit the rotation of the rotor 2. Specific embodiment 2
[0032] See also Figure 3 , 5 On the basis of the specific embodiment 1, the ball block 301 is located in the ball opening 402, so the ball opening 402 will limit the angle ring 3 and the permanent magnet 8 to ensure the stability of the position of the angle ring 3 and the permanent magnet.
[0033] Specifically, a rotating opening 104 is provided at the middle position of the upper end surface of the support plate 101, and the shaft rod 1 201 and the shaft rod 2 502 are respectively rotatably set at the corresponding internal positions of the rotating opening 104. The upper end surface of the support plate 101 located at the left end of the base plate 1 is fixed with a mounting plate 102, and the upper end surface of the mounting plate 102 is provided with a power-on groove 103, and the carbon brush 9 is fixed at the corresponding internal position of the power-on groove 103. An arc opening 401 is provided on the upper end surface of the positioning block 4, and the angle ring 3 is rotatably set at the internal position of the arc opening 401. A plurality of ball blocks 301 evenly distributed in a ring shape are fixed on the left and right end surfaces of the angle ring 3, and a ball opening 402 used in conjunction with the ball block 301 is provided at the position of the inner side surface of the arc opening 401 corresponding to the ball block 301.
[0034] The operation process of this embodiment is: when controlling the angle ring 3 to rotate in the internal position of the arc mouth 401, the angle ring 3 will drive the ball block 301 to move one by one inside the ball mouth 402. Therefore, when the angle ring 3 is not rotated, the ball mouth 402 will limit the ball block 301, so that the angle ring 3 will not rotate easily inside the arc mouth 401, and the positioning block 4 limits the angle ring 3 to ensure the stability of the position of the angle ring 3 and the permanent magnet 8. When it is necessary to rotate the limiting bend bar 7 at the position of the shaft rod 502, it is first necessary to disconnect the wires at the end of the carbon brush 9 from the battery 6 to prevent the wires from interfering with the limiting bend bar 7. Specific embodiment three
[0036] See also Figure 2 , 4 On the basis of the specific embodiment 1, by the rotation setting of the movable square column 702 and the limiting bending bar 7, the angle of the limiting bending bar 7 can be easily controlled, and the hanging of the limiting bending bar 7 is convenient.
[0037] Specifically, a square opening 703 connected to the interior of the movable box 701 is provided in the middle position of the upper end surface, and a movable square column 702 is provided on the lower end surface of the limiting bent strip 7, which slides inside the square opening 703. A baffle 705 connected to the bottom surface of the interior of the movable box 701 is fixed to the lower end surface of the movable square column 702. Springs 706 are fixed to the upper end surfaces of the baffles 705 located on the left and right sides of the movable square column 702, and the upper end surfaces of the springs 706 are connected to the top surface of the interior of the movable box 701. A rotating block 704 is fixed to the middle position of the upper end surface of the movable square column 702, and a ring plate 707 rotatably connected to the rotating block 704 is fixed to the front and rear parts of the lower end surface of the limiting bent strip 7.
[0038] The operation process of this embodiment is as follows: when controlling the limit bending strip 7 to move upward, the limit bending strip 7 will drive the movable square column 702 to slide in the internal position of the square opening 703, and the movable square column 702 will drive the baffle 705 to move inside the movable box 701, thereby the square plate will compress the spring 706. Therefore, after the limit bending strip 7 is hung on the peripheral position of the shaft rod 1 201 and the shaft rod 2 502, the limit bending strip 7 is released at this time, and then the spring 706 will push the baffle 705, thereby pushing the movable square column 702 and the limit bending strip 7, so that the limit bending strip 7 is hung stably, and at the same time, the rotating block 704 and the ring plate 707 are used in coordination, and then the limit bending strip 7 will drive the ring plate 707 to rotate along the rotating block 704.
[0039] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0040] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A permanent magnet DC motor teaching demonstration device, comprising a base plate (1); characterized in that: The left and right parts of the upper end surface of the bottom plate (1) are fixed with symmetrically arranged support plates (101); a rotor (2) is arranged between the two support plates (101); the left and right parts of the outer periphery of the rotor (2) are both provided with angle rings (3); two symmetrically arranged permanent magnets (8) are arranged between the two angle rings (3); the permanent magnets (8) are fixedly connected to the inner side wall of the angle ring (3); the lower end surfaces of the angle rings (3) are both provided with positioning blocks (4) fixedly connected to the upper end surface of the bottom plate (1); a commutator (5) is fixed to the left shaft end of the rotor (2); the commutator (5) is fixed to the left shaft end of the rotor (2); (5) A carbon brush (9) is arranged at the front position of the peripheral side, a battery (6) is fixed to the left part of the upper end surface of the base plate (1), and the carbon brush (9) is electrically connected to the battery (6) through a cable, a shaft rod 1 (201) is fixed to the right end of the rotor (2), and a shaft rod 2 (502) is fixed to the left end of the commutator (5), and the opposite end surfaces of the two support plates (101) are provided with a limit bending strip (7) hung on the peripheral position of the shaft rod 1 (201) and the shaft rod 2 (502), and a movable box (701) is fixed to the upper end surface of the base plate (1) at a position corresponding to the limit bending strip (7).
2. A permanent magnet DC motor teaching demonstration device according to claim 1, characterized in that: A rotating opening (104) is provided in the middle of the upper end surface of the support plate (101), and the shaft rod 1 (201) and the shaft rod 2 (502) are respectively rotatably arranged at corresponding internal positions of the rotating opening (104).
3. A permanent magnet DC motor teaching demonstration device according to claim 2, characterized in that: A mounting plate (102) is fixed to the upper end surface of the support plate (101) at the left end of the base plate (1), and a power supply groove (103) is opened on the upper end surface of the mounting plate (102). The carbon brush (9) is fixed at a corresponding position inside the power supply groove (103).
4. A permanent magnet DC motor teaching demonstration device according to claim 1, characterized in that: The upper end surface of the positioning block (4) is provided with an arc opening (401), and the angle ring (3) is rotatably arranged at an inner position of the arc opening (401).
5. A permanent magnet DC motor teaching demonstration device according to claim 4, characterized in that: A plurality of evenly distributed ball blocks (301) are fixed to the left and right end surfaces of the angle ring (3), and ball openings (402) for use with the ball blocks (301) are provided at positions on the inner side surfaces of the arc openings (401) corresponding to the positions of the ball blocks (301).
6. A permanent magnet DC motor teaching demonstration device according to claim 1, characterized in that: A square opening (703) connected to the interior of the movable box (701) is provided in the middle of the upper end surface thereof, and a movable square column (702) is provided on the lower end surface of the limit bending strip (7) so as to slide in the interior of the square opening (703).
7. A permanent magnet DC motor teaching demonstration device according to claim 6, characterized in that: A baffle (705) connected to the bottom surface of the movable box (701) is fixed to the lower end surface of the movable square column (702), and springs (706) are fixed to the upper end surfaces of the baffles (705) located on the left and right sides of the movable square column (702), and the upper end surfaces of the springs (706) are connected to the top surface of the movable box (701).
8. A permanent magnet DC motor teaching demonstration device according to claim 7, characterized in that: A rotating block (704) is fixed at the middle position of the upper end surface of the movable square column (702), and a ring plate (707) rotatably connected to the rotating block (704) is fixed at the front and rear positions of the lower end surface of the limiting bending strip (7).