Simple homopolar motor

Abstract

The present invention discloses a simple monopolar motor, including a motor bracket, the motor bracket including a bracket base and a bracket body located above the bracket base, the bracket body including a left bracket and a right bracket arranged opposite to each other, a power supply receiving slot is formed between the left bracket and the right bracket through a height adjustment mechanism, an upper connecting column and a lower connecting column are respectively provided above and below the power supply receiving slot, the upper end of the upper connecting column has a positioning piece for fixing one end of a wire, and the lower end of the lower connecting column is circumferentially connected with a magnetic moving assembly. In the present invention, the two ends of a battery located in the power supply receiving slot are respectively connected to the upper connecting column and the lower connecting column, and then one end of the wire is positioned on the upper connecting column through the positioning piece to connect one pole of the battery, and the user only needs to hold the other end by hand and connect it to the magnetic moving assembly to conduct an electromagnetic interaction experiment of the monopolar motor, which has the advantages of compact and strong structure, simple operation and convenient use.

Description

Technical Field

[0001] The invention relates to an experimental device, in particular to a simple single-pole motor. Background Art

[0002] High school physics is an important course. Teachers will use experimental equipment to explain a lot of physics knowledge to students so that students will have a deep impression. Among them, electromagnetic interaction is an important knowledge point. During the teaching process, teachers usually need to explain to students how to determine the direction of the Lorentz force and use experimental equipment to give students on-site demonstrations.

[0003] There is no test equipment specifically for electromagnetic interaction experiments in the prior art. High school physics teachers usually need to make relevant brackets and corresponding circuits by themselves. Although this method can also meet the test requirements, the temporary experimental equipment is usually too simple, difficult to store, and generally cannot be reused, which increases the workload of physics teachers. Summary of the invention

[0004] The object of the present invention is to provide a simple homopolar motor in view of the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A simple unipolar motor comprises a motor bracket, wherein the motor bracket comprises a bracket base and a bracket body located above the bracket base, wherein the bracket body comprises a left bracket and a right bracket arranged opposite to each other, wherein a power supply accommodating slot is formed between the left bracket and the right bracket via a height adjustment mechanism, wherein an upper connecting column and a lower connecting column are respectively provided above and below the power supply accommodating slot, wherein the upper end of the upper connecting column has a positioning piece for fixing one end of a wire, and the lower end of the lower connecting column is circumferentially rotatably connected to a magnetic moving assembly.

[0007] Through the above technical solution, the power supply slot is used to place a power supply, such as a No. 5 battery, and the two ends of the battery in the power supply slot are respectively connected to the upper connecting column and the lower connecting column, and then one end of the wire is positioned on the upper connecting column through a positioning piece to connect one of the poles of the battery. The user only needs to hold the other end and connect it to the magnetic dynamic assembly to conduct the electromagnetic interaction experiment of the monopolar motor.

[0008] In the above-mentioned simple unipolar motor, the height adjustment mechanism includes an upper limit plate and a lower limit plate arranged between the left bracket and the right bracket, and the upper limit plate, the lower limit plate, the left bracket and the right bracket together constitute the power supply accommodating slot, and the upper limit plate is longitudinally movably arranged between the left bracket and the right bracket to adjust the height of the power supply accommodating slot.

[0009] Through the above technical solution, it is possible to conduct electromagnetic interaction experiments on batteries of different sizes by adjusting the height of the power supply housing slot.

[0010] In the above-mentioned simple unipolar motor, the left bracket and the right bracket are respectively provided with longitudinal grooves on both sides of the upper limit plate, and extension strips adapted to the longitudinal grooves extend outward on both sides of the upper limit plate. The extension strips pass through the longitudinal grooves to the outside of the left bracket or the right bracket, and one end of the extension strip located on the outside of the left bracket and the right bracket is provided with a movable block.

[0011] In the above-mentioned simple homopolar motor, the inner side of the longitudinal groove contacts the extension bar, and the friction force between the two is greater than the gravity of the upper limit plate, so that the upper limit plate will move downward only when there is an external force.

[0012] Through the above technical solution, the friction between the longitudinal groove and the extension strip is used to locate the position of the upper limit plate. The user only needs to use a little force to lower the height of the power supply slot by pushing the upper limit plate downward, or push the upper limit plate upward to increase the height of the power supply slot.

[0013] In the above-mentioned simple unipolar motor, the upper limit plate and the lower limit plate both have through holes, the upper connecting column is passed through the through hole of the upper limit plate, and the lower connecting column is passed through the through hole of the lower limit plate, so that the upper connecting column and the lower connecting column can respectively contact the positive or negative pole of the power supply located in the power supply receiving groove.

[0014] In the above-mentioned simple unipolar motor, the positioning member comprises a spring sheet, one end of which is fixed on the upper limit plate, and the other end of which has a positioning surface, and the positioning surface contacts the upper surface of the connecting column;

[0015] The upper surface of the connecting post is provided with a wire groove for placing the wire, and the wire groove extends to the edge of the connecting post.

[0016] Through the above technical solution, a spring sheet is used to press one end of the wire to achieve positioning, which has a simple structure and is easy to use. The depth of the wire groove is smaller than the diameter of the wire so that the pressure of the spring sheet can play a pressing role.

[0017] In the above-mentioned simple unipolar motor, two parallel horizontal slide grooves are provided on the bracket base, and the left bracket and the right bracket base each have two sliders respectively located in the two horizontal slide grooves, so that the bracket body can move horizontally on the slide grooves.

[0018] In the above-mentioned simple unipolar motor, one end of the horizontal slide groove extends to one side edge of the bracket base, and the other end is provided with a limiting hole along the moving direction of the bracket body. The side of the slider of the left bracket facing the limiting hole has a limiting strip that can be inserted into the limiting hole.

[0019] In the above-mentioned simple unipolar motor, the two sides of the horizontal slide groove have axially extending positioning grooves, and the two sides of the slider of the right bracket have positioning columns located in the positioning grooves and capable of axial movement and circumferential rotation in the positioning grooves, so that the bracket body can slide in the horizontal slide groove along the extension direction of the horizontal slide groove, and the bracket body can be rotated from an upright state to a horizontal state with the positioning columns as fulcrums;

[0020] The left bracket and the right bracket have longitudinal convex strips adapted to the horizontal slide groove on one side away from the limiting strip, and when the bracket body is rotated to a horizontal state, the longitudinal convex strips are embedded in the horizontal slide groove.

[0021] Through the above technical solution, the bracket body can be stably erected or laid down as needed to meet the needs of use and is easy to store.

[0022] In the above-mentioned simple unipolar motor, the magnetic moving assembly includes a metal rod and a magnet located at the lower end of the metal rod, and the metal rod is rotatably connected or fixedly connected to the lower end of the lower connecting column, and the magnet is magnetically attracted to the lower end of the metal rod.

[0023] The advantages of the present invention are: simple structure, simple use, convenient storage, and high experimental efficiency; one bracket can be suitable for batteries of different sizes, and the battery can be easily replaced, and there is no need to replace the motor bracket in order to experiment with different batteries; the motor bracket has a simple structure, and since the bracket body can be placed upright or horizontally, it is more convenient to store.

[0024] Instruction Manual

[0025] Figure 1 1 is a schematic structural diagram of a simple homopolar motor in Embodiment 1 of the present invention;

[0026] Figure 2 yes Figure 1 A magnified view of part A;

[0027] Figure 3 This is a schematic diagram of the structure of the bracket body of the simple single-pole motor in the second embodiment of the present invention when it is upright Figure 1 ;

[0028] Figure 4 yes Figure 3 A magnified view of part B;

[0029] Figure 5This is a schematic diagram of the structure of the bracket body of the simple single-pole motor in the second embodiment of the present invention when it is upright Figure 2 ;

[0030] Figure 6 is a schematic structural diagram of a right bracket slider in Embodiment 2 of the present invention;

[0031] Figure 7 yes Figure 5 Enlarged view of part C;

[0032] Figure 8 It is a structural schematic diagram of the bracket body of the simple homopolar motor in the second embodiment of the present invention when it is tilted;

[0033] Fig. 9 yes Figure 8 Magnified view of part D.

[0034] Figure numerals: bracket base 1; horizontal slide groove 11; limit hole 12; positioning groove 13; bracket body 2; left bracket 21; right bracket 22; power supply accommodating groove 23; upper connecting column 24; slider 25; limit strip 26; longitudinal convex strip 27; positioning column 28; positioning member 4; spring sheet 41; magnetic assembly 5; metal rod 51; magnet 52; upper limit plate 6; longitudinal groove 61; movable block 62; extension strip 63; lower limit plate 7; battery 8; wire 9. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1 and Figure 2 As shown, this embodiment discloses a simple monopolar motor, including a motor support, the motor support including a support base 1 and a support body 2 located above the support base 1, the support body 2 including a left support 21 and a right support 22 arranged opposite to each other, a power supply receiving slot 23 is formed between the left support 21 and the right support 22 through a height adjustment mechanism, and an upper connecting column 24 and a lower connecting column are respectively provided above and below the power supply receiving slot 23, the upper end of the upper connecting column 24 has a positioning member 4 for fixing one end of the wire, and the lower end of the lower connecting column is circumferentially connected with a magnetic assembly 5. The power supply receiving slot 23 is used to place a power source, such as a No. 5 battery 8, etc., and the two ends of the battery 8 located in the power supply receiving slot 23 are respectively connected to the upper connecting column 24 and the lower connecting column, and then one end of the wire 9 is positioned on the upper connecting column 24 through the positioning member 4 to connect one pole of the battery, and the user only needs to hold the other end by hand and connect it to the magnetic assembly 5 to conduct the electromagnetic interaction experiment of the monopolar motor.

[0037] Of course, those skilled in the art should know that in order to achieve the purpose of power supply, the conductive column here is also made of metal, such as copper. In addition, the magnetic dynamic assembly 5 includes a metal rod 51 and a magnet 52 located at the lower end of the metal rod 51, and the metal rod 51 is circumferentially connected or fixedly connected to the lower end of the lower connecting column, and the magnet 52 is magnetically attracted to the lower end of the metal rod 51. The metal rod 51 can be a screw, and the metal rod 51 has a contact portion below, and the lower surface of the contact portion has a contact surface, through which the contact surface contacts the magnet 52, and the magnet 52 is magnetically attracted to the contact surface by magnetic attraction. If the metal rod 51 is fixed on the lower connecting column, when the two ends of the wire are respectively in contact with the upper connecting column 24 and the magnet 52, the magnet 52 rotates under the metal rod 51; if the metal rod 51 is movably connected to the lower connecting column, when the two ends of the wire are respectively in contact with the upper connecting column 24 and the magnet 52, the magnet 52 rotates together with the metal rod 51 under the lower connecting column. The metal rod 51 can be connected to the lower end of the lower connecting column by mechanical force, or directly connected to the lower end of the lower connecting column by the magnetic attraction force transmitted by the magnet 52.

[0038] Specifically, the height adjustment mechanism includes an upper limit plate 6 and a lower limit plate 7 arranged between the left bracket 21 and the right bracket 22. The upper limit plate 6, the lower limit plate 7, the left bracket 21 and the right bracket 22 together constitute the power accommodating groove 23, and the upper limit plate 6 is longitudinally movably arranged between the left bracket 21 and the right bracket 22 to adjust the height of the power accommodating groove 23. By adjusting the height of the power accommodating groove 23, electromagnetic interaction experiments on batteries of different sizes are carried out.

[0039] Furthermore, the left bracket 21 and the right bracket 22 are respectively provided with two longitudinal grooves 61 on both sides of the upper limit plate 6, and two extension strips 63 adapted to the two longitudinal grooves 61 extend outward on both sides of the upper limit plate 6. The two extension strips 63 pass through the longitudinal grooves 61 to the outside of the left bracket 21 or the right bracket 22, and the extension strips 63 on both sides of the upper limit plate 6 are provided with movable blocks 62 at one end located on the outside of the left bracket 21 and the right bracket 22, and the two extension strips 63 are combined into one by the movable blocks 62.

[0040] Furthermore, the inner side of the longitudinal groove 61 contacts the extension strip 63, and the friction between the two is greater than the gravity of the upper limit plate 6, so that the upper limit plate 6 will move downward only when there is an external force. Preferably, the inner side of the longitudinal groove 61 is covered with a rubber sheet, which contacts the extension strip 63, and the friction between the two is increased by the rubber sheet. The friction is greater than the gravity of the upper limit plate 6 and its components such as the extension strip 63, but less than the ordinary hand push of an average adult, so that the upper limit block will not slide down by itself in a natural state, and it is convenient for the user to manually adjust the height of the upper limit plate 6. When the battery 8 needs to be placed, the upper limit plate 6 is held and pulled upward, and then the battery 8 is placed in the power storage slot 23, and the positive or negative pole of the battery 8 contacts the lower connecting column, and then the upper limit plate 6 is pushed downward until the other pole of the battery contacts the upper connecting column 24. A groove can be set at the position where the lower connecting column or the upper connecting column 24 contacts the positive pole of the battery for the positive terminal to be inserted, so as to facilitate the battery to be stabilized in the power storage slot 23.

[0041] Here, the position of the upper limit plate 6 is positioned by using the friction force inherent in the longitudinal groove 61 and the extension strip 63. The user only needs to use a little force to lower the height of the power supply accommodating slot 23 by pushing the upper limit plate 6 downward, or push the upper limit plate 6 upward to increase the height of the power supply accommodating slot 23.

[0042] Furthermore, both the upper limit plate 6 and the lower limit plate 7 have through holes, the upper connecting column 24 is passed through the through hole of the upper limit plate 6, and the lower connecting column is passed through the through hole of the lower limit plate 7, so that the upper connecting column 24 and the lower connecting column can respectively contact the positive or negative pole of the power supply located in the power supply receiving groove 23.

[0043] Specifically, the positioning member 4 includes a spring sheet 41, one end of which is fixed on the upper limit plate 6, and the other end of the spring sheet 41 has a positioning surface, which contacts the upper surface of the connecting column; preferably, the upper surface of the connecting column has a wire groove for placing the wire, and the wire groove extends to the edge of the connecting column. The spring sheet 41 is used to press one end of the wire to achieve positioning, which has a simple structure and is easy to use, wherein the depth of the wire groove is less than the diameter of the wire, so that the pressure of the spring sheet 41 can play a pressing role.

[0044] Embodiment 2

[0045] like Figure 3-6As shown, this embodiment is similar to the first embodiment, except that two parallel horizontal slide grooves 11 are provided on the bracket base 1 of this embodiment, and the bases 1 of the left bracket 21 and the right bracket 22 each have two sliders 25 respectively located in the two horizontal slide grooves 11, so that the bracket body 2 can move horizontally in the horizontal slide grooves 11. One end of the horizontal slide groove 11 extends to one side edge of the bracket base 1, and the other end is provided with a limiting hole 12 along the moving direction of the bracket body 2. The side of the slider 25 of the left bracket 21 facing the limiting hole 12 is provided with a limiting bar 26 that can be inserted into the limiting hole 12. When conducting experiments, the bracket body 2 is moved to the limiting hole 12, and the limiting bar 26 is inserted into the limiting hole 12. The limiting bar 26 can be made of rubber material, which is easy to insert or pull out of the limiting hole 12, and when inserted, it has a certain friction with the limiting hole 12 so that the bracket body 2 can be stably limited in the current position. The cross-section of the limiting bar 26 can be a rectangular structure or an original circular structure, as long as it can be inserted and pulled out of the limiting hole 12 and has a certain friction with the limiting hole 12.

[0046] Furthermore, if Figures 6 to 9 As shown, the two sides of the horizontal slide groove 11 have axially extending positioning grooves 13, and the two sides of the slider 25 of the right bracket 22 have positioning columns 28 located in the positioning groove 13 and capable of axial movement and circumferential rotation in the positioning groove 13, so that the bracket body 2 can slide in the horizontal slide groove 11 along the extension direction of the horizontal slide groove 11, and can use the positioning column 28 as a fulcrum to rotate the bracket body 2 from an upright state to a horizontal state; preferably, the left bracket 21 and the right bracket 22 have a longitudinal ridge 27 adapted to the horizontal slide groove 11 on the side away from the limit strip 26, and when the bracket body 2 is rotated to a horizontal state, the longitudinal ridge 27 is embedded in the horizontal slide groove 11, and of course the longitudinal ridge 27 is cylindrical so that it can rotate circumferentially in the horizontal slide groove 11.

[0047] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0048] Although the present invention uses the terms such as the support base 1; horizontal slide groove 11; limiting hole 12; positioning groove 13; support body 2; left support 21; right support 22; power supply receiving groove 23; upper connecting column 24; slider 25; limiting strip 26; longitudinal convex strip 27; positioning column 28; positioning member 4; spring sheet 41; magnetic moving assembly 5; metal rod 51; magnet 52; upper limit plate 6; longitudinal groove 61; movable block 62; extension strip 63; lower limit plate 7; battery 8; wire 9, the possibility of using other terms is not excluded. The use of these terms is only for more convenient description and explanation of the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A simple homopolar motor, characterized in that: The motor support comprises a support base (1) and a support body (2) located above the support base (1); the support body (2) comprises a left support (21) and a right support (22) arranged opposite to each other; a power supply receiving slot (23) is formed between the left support (21) and the right support (22) via a height adjustment mechanism; an upper connecting column (24) and a lower connecting column are respectively provided above and below the power supply receiving slot (23); the upper end of the upper connecting column (24) has a positioning member (4) for fixing one end of a wire; the lower end of the lower connecting column is rotatably connected to a magnetic moving assembly (5); The support base (1) is provided with two mutually parallel horizontal slide grooves (11), and the bottoms of the left support (21) and the right support (22) are provided with two sliders (25) respectively located in the two horizontal slide grooves (11), so that the support body (2) can move horizontally on the slide grooves; One end of the horizontal slide groove (11) extends to a side edge of the bracket base (1), and the other end is provided with a limiting hole (12) along the movable direction of the bracket body (2); a limiting strip (26) capable of being inserted into the limiting hole (12) is provided on the side of the slider (25) of the left bracket (21) facing the limiting hole (12); The horizontal slide groove (11) has axially extending positioning grooves (13) on both sides of the groove, and the slider (25) of the right bracket (22) has positioning columns (28) on both sides located in the positioning groove (13) and capable of axial movement and circumferential rotation in the positioning groove (13), so that the bracket body (2) can slide in the horizontal slide groove (11) along the extension direction of the horizontal slide groove (11), and the bracket body (2) can be rotated from an upright state to a horizontal state with the positioning columns (28) as a fulcrum; The right bracket (22) and the left bracket have a longitudinal convex strip (27) adapted to the horizontal slide groove (11) on a side away from the limiting strip (26), and when the bracket body (2) is rotated to a horizontal state, the longitudinal convex strip (27) is embedded in the horizontal slide groove (11); The height adjustment mechanism comprises an upper limit plate (6) and a lower limit plate (7) arranged between the left bracket (21) and the right bracket (22); the upper limit plate (6), the lower limit plate (7), the left bracket (21) and the right bracket (22) together form the power receiving slot (23); and the upper limit plate (6) is longitudinally movably arranged between the left bracket (21) and the right bracket (22) to adjust the height of the power receiving slot (23); The left bracket (21) and the right bracket (22) are provided with longitudinal grooves (61) on both sides of the upper limit plate (6), and extension strips (63) adapted to the longitudinal grooves (61) are extended outwardly from both sides of the upper limit plate (6), and the extension strips (63) pass through the longitudinal grooves (61) to the outside of the left bracket (21) or the right bracket (22), and one end of the extension strip (63) located on the outside of the left bracket (21) and the right bracket (22) is provided with a movable block (62); The upper limit plate (6) and the lower limit plate (7) both have through holes, the upper connecting column (24) is inserted through the through hole of the upper limit plate (6), and the lower connecting column is inserted through the through hole of the lower limit plate (7), so that the upper connecting column (24) and the lower connecting column can respectively contact the positive electrode or the negative electrode of the power supply located in the power supply receiving groove (23).

2. The simplified homopolar motor according to claim 1, characterized in that: The inner side of the longitudinal groove (61) is in contact with the extension strip (63), and the friction force between the two is greater than the gravity of the upper limit plate (6), so that the upper limit plate (6) will move downward only when there is an external force.

3. The simplified homopolar motor according to claim 2, characterized in that: The positioning member (4) comprises a spring sheet (41), one end of the spring sheet (41) is fixed on the upper limit plate (6), and the other end of the spring sheet (41) has a positioning surface, and the positioning surface contacts the upper surface of the connecting column; The upper surface of the connecting post is provided with a wire groove for placing the wire, and the wire groove extends to the edge of the connecting post.

4. The simplified homopolar motor according to claim 1, characterized in that: The magnetic dynamic assembly (5) comprises a metal rod (51) and a magnet (52) located at the lower end of the metal rod (51), wherein the metal rod (51) is rotatably connected or fixedly connected to the lower end of the lower connecting column, and the magnet (52) is magnetically attracted to the lower end of the metal rod (51).

Images