Single-turn coil motor principle demonstrator

Abstract

The utility model provides a single-turn coil motor principle demonstrator, which comprises an iron bottom plate, the upper surface of the iron bottom plate is fixedly connected with a fixing frame, the top end of the fixing frame is rotatably provided with a rotating hand wheel, the middle part of the fixing frame is provided with a rotatable stator magnet frame, and the rotatable stator magnet frame is provided with a strong magnet. A commutator is rotationally installed in the middle of the iron bottom plate, a single-turn coil rotor shaft is axially installed on the commutator, a single-turn copper coil is arranged on the single-turn coil rotor shaft, a current direction indicating circuit board is installed at the bottom end of the single-turn copper coil, and a copper electric brush is installed between the current direction indicating circuit board and the commutator. The input and output terminal and the red and green LED lamp are respectively arranged on two sides of the edge of the upper surface of the iron bottom plate; the demonstrator adopts a vertical tip structure, is small in friction force, flexible in rotation, obvious in demonstration effect, smaller in friction force and smoother in rotation due to the design of the rotating circuit board and the indication of the current direction of the single-turn copper coil by the red and green indication lamps, and the rotating part adopts the single-side bearing.

Description

Technical Field

[0001] The utility model relates to teaching instruments, in particular to a single-turn coil motor principle demonstrator. Background Art

[0002] The single-turn coil motor principle demonstrator is a multi-functional demonstration motor for middle school physics teaching. When connected to a DC power supply, it can demonstrate the structure and working principle of a DC motor. When connected to a demonstration ammeter, it can demonstrate the structures and working principles of a DC generator and an AC generator, and has become an essential teaching aid in schools.

[0003] The existing single-turn coil motor principle demonstrator includes a bottom plate. A pair of pole-type permanent magnets are arranged on the bottom plate. A rectangular coil is arranged in the middle of the permanent magnets. A support rod is arranged in the middle of the rectangular coil. One end of the support rod is provided with a round hole allowing the rectangular coil to pass through. The other end of the support rod is provided with a contact. The contact isolates the two joints of the rectangular coil and cooperates with the inner and outer carbon brushes. The inner and outer carbon brushes are connected in series with a current demonstration meter through wires. The contact can also be equipped with a commutator. However, during the demonstration, the friction is large, the rotation is not flexible, and the current direction cannot be clearly shown, resulting in poor demonstration effects. Content of the Utility Model

[0004] The purpose of the embodiment of the utility model is to provide a single-turn coil motor principle demonstrator, aiming to solve the problems existing in the above background art.

[0005] The embodiment of the utility model is realized as follows: A single-turn coil motor principle demonstrator includes an iron bottom plate, a fixing frame, a rotating handwheel, a strong magnet, a single-turn copper coil, input and output terminals, and red and green LED lights;

[0006] The upper surface of the iron bottom plate is fixedly connected with a fixing frame, and the rotating handwheel is rotatably arranged at the top of the fixing frame;

[0007] A rotatable stator magnet frame is installed in the middle of the fixing frame, and strong magnets are installed on one side of the bottom ends of the rotatable stator magnet frame opposite to each other;

[0008] A driving mechanism is also arranged inside the fixing frame. One end of the driving mechanism is connected with the rotating handwheel, and the other end of the driving mechanism is connected with the rotatable stator magnet frame, so as to drive the rotatable stator magnet frame and the strong magnets to move through the driving mechanism when the rotating handwheel is rotated;

[0009] A commutator is rotatably installed in the middle of the upper surface of the iron bottom plate. A single-turn coil rotor shaft is axially installed on the commutator. A single-turn copper coil is arranged inside the strong magnets on the single-turn coil rotor shaft. A current direction indicating circuit board is installed at the bottom end of the single-turn copper coil, and a copper carbon brush is installed between the current direction indicating circuit board and the commutator;

[0010] The input / output terminals and the red / green LED lights are respectively installed on both sides of the upper surface edge of the iron base plate;

[0011] Among them, a plastic base is installed at the bottom of the iron base plate, and a decorative cover is installed in the middle of the top end of the fixing frame.

[0012] Preferably, the fixing frame includes a crossbeam upper cover, a left support pillar, and a right support pillar;

[0013] The left support pillar and the right support pillar are respectively fixedly installed on the upper surface of the iron base plate;

[0014] The top ends of the left support pillar and the right support pillar are connected to the crossbeam upper cover and fixed by bolts;

[0015] A crossbeam is further installed at the bottom end of the crossbeam upper cover, and both ends of the crossbeam are respectively connected to the left support pillar and the right support pillar.

[0016] Preferably, the driving mechanism includes a driven pulley coupling, a driving pulley, and a rubber belt;

[0017] The driven pulley coupling and the driving pulley are both installed on the crossbeam, and the driven pulley coupling and the driving pulley are connected by a rubber belt for transmission;

[0018] The driving pulley is connected to the rotary handwheel, and the driven pulley coupling is connected to the rotatable stator magnet frame.

[0019] Preferably, the input / output terminals include a power supply rubber socket, and the power supply rubber socket is installed on the iron base plate and is also connected to an external sensitive pointer ammeter.

[0020] Preferably, the red / green LED lights include a rotation direction change and indication circuit board, the rotation direction change and indication circuit board is arranged on the iron base plate, and a red light, a green light, and a toggle switch are further provided on the rotation direction change and indication circuit board.

[0021] The single-turn coil motor principle demonstrator provided by the embodiment of the present invention has the following technical effects:

[0022] 1. Adopting a vertical top structure, it has small friction and flexible rotation;

[0023] 2. Designing a rotating circuit board, using red / green indicator lights to indicate the current direction of the single-turn copper coil, and the demonstration effect is obvious;

[0024] 3. The rotating part adopts a single-sided bearing, with smaller friction and smoother rotation. Description of the Drawings

[0025] Figure 1 It is a schematic structural diagram of a single-turn coil motor principle demonstrator provided by the embodiment of the present invention;

[0026] In the drawings: 1 - upper cover of crossbeam; 2 - crossbeam; 3 - left support pillar; 4 - right support pillar; 5 - iron base plate; 6 - plastic base; 7 - decorative cover; 8 - rotating handwheel; 9 - driven pulley coupling; 10 - driving pulley; 11 - rubber belt; 12 - rotatable stator magnet frame; 13 - strong magnet; 14 - single-turn coil rotor shaft; 15 - single-turn copper coil; 16 - rotation-reversing and indicating circuit board; 17 - copper brush; 18 - commutator; 19 - current direction indicating circuit board; 20 - power supply rubber socket. Detailed implementation mode

[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0028] The specific implementation of the present utility model will be described in detail below in conjunction with specific embodiments.

[0029] As Figure 1 shown, it is a structural diagram of a single-turn coil motor principle demonstrator provided by an embodiment of the present utility model, including an iron base plate 5, a fixing frame, a rotating handwheel 8, a strong magnet 13, a single-turn copper coil 15, input and output terminals, and red and green LED lights; a fixing frame is fixedly connected to the upper surface of the iron base plate 5, and a rotating handwheel 8 is rotatably arranged at the top of the fixing frame; a rotatable stator magnet frame 12 is installed in the middle of the fixing frame, and strong magnets 13 are installed on opposite sides at both ends of the bottom of the rotatable stator magnet frame 12, and the strong magnets 13 include an N pole and an S pole; a driving mechanism is also arranged inside the fixing frame, one end of the driving mechanism is connected to the rotating handwheel 8, and the other end of the driving mechanism is connected to the rotatable stator magnet frame 12, so as to drive the rotatable stator magnet frame 12 and the strong magnets 13 to move through the driving mechanism when the rotating handwheel 8 is rotated; a commutator 18 is rotatably installed in the middle of the upper surface of the iron base plate 5, a single-turn coil rotor shaft 14 is axially installed on the commutator 18, a single-turn copper coil 15 is arranged inside the strong magnet 13 on the single-turn coil rotor shaft 14, a current direction indicating circuit board 19 is installed at the bottom end of the single-turn copper coil 15, and a copper brush 17 is installed between the current direction indicating circuit board 19 and the commutator 18; the input and output terminals and the red and green LED lights are respectively installed on both sides of the edge of the upper surface of the iron base plate 5.

[0030] A single-turn coil motor principle demonstrator provided by the present application adopts a vertical center point structure, has small friction and flexible rotation. A rotating circuit board is designed, and red and green indicator lights are used to indicate the current direction of the single-turn copper coil 15, and the demonstration effect is obvious. The rotating part adopts a single-side bearing, with even smaller friction and smoother rotation.

[0031] In an example of the present utility model, a plastic base 6 is installed at the bottom of the iron base plate 5, and a decorative cover 7 is installed in the middle of the top end of the fixing frame; in addition, the diameter of the single-turn copper coil 15 is 2 mm, the working voltage of the demonstrator is 0 - 12 V, and the working current is a constant current of 1 A.

[0032] As Figure 1 shown, as a preferred embodiment of the present utility model, the fixing frame includes a crossbeam upper cover 1, a left support column 3, and a right support column 4;

[0033] The left support column 3 and the right support column 4 are respectively fixedly installed on the upper surface of the iron base plate 5;

[0034] The top ends of the left support column 3 and the right support column 4 are connected to the crossbeam upper cover 1 and fixed by bolts;

[0035] A crossbeam 2 is further installed at the bottom end of the crossbeam upper cover 1, and the two ends of the crossbeam 2 are respectively connected to the left support column 3 and the right support column 4.

[0036] In an example of the present utility model, the left support column 3 and the right support column 4 are fixedly installed on the iron base plate 5, and the crossbeam 2 and the crossbeam upper cover 1 are respectively installed at the top ends of the left support column 3 and the right support column 4 by bolts.

[0037] As Figure 1 shown, as another preferred embodiment of the present utility model, the driving mechanism includes a driven pulley coupling 9, a driving pulley 10, and a rubber belt 11;

[0038] The driven pulley coupling 9 and the driving pulley 10 are both installed on the crossbeam 2, and the driven pulley coupling 9 and the driving pulley 10 are connected by a rubber belt 11 for transmission;

[0039] The driving pulley 10 is connected to the rotary handwheel 8, and the driven pulley coupling 9 is connected to the rotatable stator magnet frame 12.

[0040] In an example of the present utility model, when the rotary handwheel 8 is rotated, the driving pulley 10 at the bottom end is driven to rotate, the driving pulley drives the driven pulley coupling 9 to rotate through the rubber belt 11, and the driven pulley coupling 9 drives the rotatable stator magnet frame 12 at the bottom end and the strong magnets 13 on the opposite sides of the two ends of the bottom to rotate synchronously.

[0041] As Figure 1 shown, as another preferred embodiment of the present utility model, the input / output terminal includes a power supply rubber socket 20, the power supply rubber socket 20 is installed on the iron base plate 5, and the power supply rubber socket 20 is also connected to an external sensitive pointer ammeter.

[0042] In an example of the present utility model, the red and green LED lights include a rotation conversion and indication circuit board 16, which is arranged on the iron base plate 5. A red light, a green light, and a toggle switch are also provided on the rotation conversion and indication circuit board 16.

[0043] When conducting the motor experiment, the steps are as follows:

[0044] 1. Adjust the two copper brushes 17;

[0045] 2. Connect the power supply and toggle the switch, and the single-turn copper coil 15 can rotate;

[0046] 3. Toggle the switch in the reverse direction to change the current direction, and the single-turn copper coil 15 deflects in the opposite direction.

[0047] When conducting the generator experiment, the steps are as follows:

[0048] 1. Connect the power generation output terminal (shared with the electric input terminal) to the sensitive pointer galvanometer;

[0049] 2. Shake the rotating handwheel 8 to rotate the strong magnet 13, and the pointer of the galvanometer deflects back and forth between positive and negative, generating alternating current;

[0050] 3. When the rotation direction of the handwheel 8 is different, the generated alternating current has different phases.

[0051] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model.

[0052] In addition, it should be understood that although this specification is described according to the embodiments, not each embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A single-turn coil motor principle demonstrator, characterized in that, It includes an iron base plate, a fixing frame, a rotating hand wheel, a strong magnet, a single-turn copper coil, input and output terminals, and red and green LED lights; The upper surface of the iron bottom plate is fixedly connected to a fixing frame, and a rotating hand wheel is rotatably arranged on the top of the fixing frame; A rotatable stator magnet frame is installed in the middle of the fixed frame, and strong magnets are installed on opposite sides of the bottom of the rotatable stator magnet frame; A driving mechanism is further arranged inside the fixed frame, one end of the driving mechanism is connected to the rotating hand wheel, and the other end of the driving mechanism is connected to the rotatable stator magnet frame, so that when the rotating hand wheel is turned, the rotatable stator magnet frame and the strong magnet are driven to move by the driving mechanism; A commutator is rotatably mounted on the middle portion of the upper surface of the iron bottom plate, a single-turn coil rotor shaft is axially mounted on the commutator, a single-turn copper coil is arranged on the single-turn coil rotor shaft on the inner side of the strong magnet, a current direction indication circuit board is mounted on the bottom end of the single-turn copper coil, and a copper brush is mounted between the current direction indication circuit board and the commutator; The input and output terminals and the red and green LED lights are respectively installed on both sides of the upper edge of the iron base plate; Wherein, a plastic base is installed at the bottom of the iron bottom plate, and a decorative cover is installed at the middle of the top end of the fixing frame.

2. The single-turn coil motor principle demonstrator according to claim 1, characterized in that The fixing frame includes a crossbeam upper cover, a left support and a right support; The left support and the right support are respectively fixedly mounted on the upper surface of the iron bottom plate; The top ends of the left and right pillars are connected to the crossbeam cover and fixed by bolts; A crossbeam is also installed at the bottom end of the crossbeam upper cover, and both ends of the crossbeam are respectively connected to the left support and the right support.

3. The principle demonstrator of a single-turn coil motor according to claim 2, characterized in that, The driving mechanism includes a driven pulley coupling, a driving pulley and a rubber belt; The driven pulley coupling and the driving pulley are both mounted on the crossbeam, and the driven pulley coupling and the driving pulley are connected via a rubber belt transmission; The driving pulley is connected to the rotating handwheel, and the driven pulley coupling is connected to the rotatable stator magnet frame.

4. A single-turn coil motor principle demonstrator according to claim 1, characterized in that, The input and output terminals include a power supply rubber socket, which is mounted on an iron bottom plate and is also connected to an external sensitive pointer ammeter.

5. A single-turn coil motor principle demonstrator according to claim 1, characterized in that, The red and green LED lights include a rotating reversing and indicating circuit board, which is arranged on an iron bottom plate. The rotating reversing and indicating circuit board is also provided with a red light, a green light and a toggle switch.

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