Electromagnetic relay for teaching

Abstract

The utility model discloses an electromagnetic relay for teaching, which comprises a bottom plate and a transverse plate arranged on the upper side of the bottom plate, a magnet is fixedly connected in the center of the transverse plate, a vertical column is arranged on the lower side of the magnet, an electric wire is wound on the circular outer wall of the vertical column, and a connecting plate b is arranged on the outer wall of the upper end of the bottom plate close to the front side. A connecting plate a is arranged on the outer wall, close to the rear side, of the upper end of the bottom plate, joints are fixedly connected to the interiors of the centers of the outer walls of the upper ends of the connecting plate a and a connecting plate b, supporting legs are arranged at the four corners of the outer wall of the lower end of the bottom plate, and fixing sleeves are fixedly connected to the four corners of the outer wall of the lower end of the bottom plate; according to the relay experiment box, traditional non-adjustable supporting legs are improved into existing adjustable supporting legs, and when a student needs to place a relay in the experiment box, the supporting legs can be folded inwards, so that the height of the relay is reduced, the relay can be placed in the experiment box for the student, and follow-up movement of the student is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field related to relays, and in particular relates to an electromagnetic relay used for teaching. Background Art

[0002] A relay is an electrically controlled switch whose working principle is based on electromagnetic induction. When current is applied to the control end of the relay, the electromagnetic coil generates a magnetic field, causing the contacts to close or open, thereby controlling the on and off of the circuit. However, when students use it, the current relay occupies a large area. During use, it cannot be placed in the experimental box carried by students for storage and carrying, resulting in damage to the relay when not in use. Utility Model Content

[0003] The utility model aims to provide an electromagnetic relay for teaching, so as to solve the problem that the relay proposed in the above background technology occupies a large area and cannot be placed in the experimental box carried by students for storage and carrying during use.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solution: an electromagnetic relay for teaching, comprising a bottom plate and a horizontal plate installed on the upper side of the bottom plate;

[0005] A magnet is fixedly connected inside the center of the horizontal plate;

[0006] A column is provided on the lower side of the magnet;

[0007] The circular outer wall of the column is wound with electric wires, the upper outer wall of the bottom plate is provided with a connecting plate b near the front side, the upper outer wall of the bottom plate is provided with a connecting plate a near the rear side, and the inner center of the upper outer wall of the connecting plate a and the connecting plate b are fixedly connected with joints;

[0008] Support feet are arranged at the four corners of the outer wall of the lower end of the bottom plate, and fixing sleeves are fixedly connected to the four corners of the outer wall of the lower end of the bottom plate.

[0009] Preferably, a slide groove penetrating front to back is provided inside the front end outer wall of the fixing sleeve, and a positioning rod is transmission-connected between the slide groove and the supporting foot to guide the tilting position of the supporting foot.

[0010] Preferably, a threaded rod is fixedly connected to the inside of the center of the transverse plate, and an adjusting nut is threadedly connected to the circular outer wall of the threaded rod.

[0011] Preferably, the outer walls at both ends of the cross plate are fixedly connected with fixing columns, and the outer wall at the upper end of the bottom plate is fixedly connected with a fixing rod near the right side.

[0012] Preferably, two fixing rods are provided, and both fixing rods are provided with a slot opening upwards to lift the fixing column.

[0013] Preferably, a positioning shaft is fixedly connected to the front end outer wall of the base plate, and a movable ring is transmission-connected to the circular outer wall of the positioning shaft.

[0014] Preferably, the circular outer walls at both ends of the movable ring are fixedly connected with clamping plates to clamp the column, and the left sides of the two clamping plates are clamping ends.

[0015] Preferably, the upper outer wall of the column is fixedly connected to the top plate, and a fixing foot is provided between the upper outer wall of the connecting plate b and the bottom plate to limit the position of the connecting plate b.

[0016] Compared with the prior art, the utility model provides an electromagnetic relay for teaching, which has the following beneficial effects:

[0017] 1. By improving the traditional non-adjustable feet to the existing adjustable feet, when students need to place the relay in the experiment box, the feet can be folded inward, so that the height of the relay is reduced and can be placed in the student's experiment box, which is convenient for students to move later.

[0018] 2. When adjusting the position of the horizontal board, the position of the adjusting screw on the threaded rod can be adjusted clockwise or counterclockwise to accurately adjust the angle and position of the horizontal board, so that the position of the horizontal board can be more accurately moved to the position required for use.

[0019] 3. When the column and the wire are wound to form the electromagnetic coil, the clamping plates can be pinched inward to increase the distance between the left sides of the two clamping plates, and the electromagnetic coil can be loosened for disassembly. When installing the electromagnetic coil, the clamping plates can also be pinched to increase the distance between the left sides of the two clamping plates to a space that can accommodate the electromagnetic coil. After the electromagnetic coil is placed, loosen the clamping plates so that the clamping plates can clamp the electromagnetic coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The utility model is a schematic diagram of the structure of an electromagnetic relay used for teaching.

[0021] Figure 2 It is a schematic diagram of the local structure of the horizontal plate area of ​​the utility model.

[0022] Figure 3 It is a schematic diagram of the local structure of the bottom plate area of ​​the utility model in a top view.

[0023] In the figure: 1. bottom plate; 2. electric wire; 3. column; 4. top plate; 5. magnet; 6. horizontal plate; 7. joint; 8. connecting plate a; 9. connecting plate b; 10. fixed foot; 11. slide groove; 12. fixing sleeve; 13. positioning rod; 14. support foot; 15. threaded rod; 16. adjusting nut; 17. slot; 18. fixing column; 19. fixing rod; 20. positioning shaft; 21. splint; 22. movable ring. DETAILED DESCRIPTION

[0024] 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 in 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.

[0025] The utility model provides Figure 1-3 The electromagnetic relay for teaching shown in the figure comprises a base plate 1 and a horizontal plate 6 installed on the upper side of the base plate 1;

[0026] A magnet 5 is fixedly connected inside the center of the horizontal plate 6;

[0027] A column 3 is provided on the lower side of the magnet 5;

[0028] The circular outer wall of the column 3 is wound with an electric wire 2, the upper outer wall of the bottom plate 1 is provided with a connecting plate b9 near the front side, the upper outer wall of the bottom plate 1 is provided with a connecting plate a8 near the rear side, and the centers of the upper outer walls of the connecting plates a8 and b9 are fixedly connected with connectors 7. When the positive and negative poles of the electric wire 2 and the external power supply are energized, a magnetic field is generated, and the magnets 5 on the horizontal plate 6 are magnetically adsorbed to close or disconnect them. When the magnets 5 and the column 3 are closed or disconnected, the current in the control circuit can flow or terminate, thereby controlling the switch state of the controlled device;

[0029] Support legs 14 are provided at the four corners of the lower outer wall of the base plate 1, and fixed sleeves 12 are fixedly connected to the four corners of the lower outer wall of the base plate 1. When storing the relay, the support legs 14 are folded inward so that the support legs 14 and the base plate 1 fit together, shortening the height of the relay so that it can be placed in the experiment box carried by students for storage.

[0030] like Figure 1 As shown, a slide groove 11 penetrating front to back is provided inside the front end outer wall of the fixing sleeve 12 , and a positioning rod 13 is transmission-connected between the slide groove 11 and the supporting leg 14 to guide the tilting position of the supporting leg 14 .

[0031] When the supporting legs 14 are folded and stored, in the process of pushing the supporting legs 14 inward, the positioning rod 13 will move inward inside the sliding groove 11 to limit the moving direction of the supporting legs 14 .

[0032] like Figure 2 As shown, a threaded rod 15 is fixedly connected to the inside of the center of the cross plate 6, and an adjusting nut 16 is threadedly connected to the circular outer wall of the threaded rod 15. Fixed columns 18 are fixedly connected to the outer walls at both ends of the cross plate 6, and a fixing rod 19 is fixedly connected to the outer wall of the upper end of the base plate 1 near the right side. Two fixing rods 19 are provided, and both fixing rods 19 are provided with an upwardly opening slot 17 to lift the fixing column 18.

[0033] When adjusting the position of the cross plate 6, the distance between the adjusting nut 16 and the cross plate 6 can be adjusted by rotating it clockwise or counterclockwise, and different inclination angles of the cross plate 6 can be adjusted by different distances, thereby completing the angle adjustment of the cross plate 6, and when the cross plate 6 moves, the fixing column 18 is restricted in the slot 17 on the fixing rod 19, so that the angle of the cross plate 6 is controlled with the fixing column 18 as the fulcrum.

[0034] like Figure 3 As shown, the front end outer wall of the base plate 1 is fixedly connected with a positioning shaft 20, and the circular outer wall of the positioning shaft 20 is transmission-connected with a movable ring 22. The upper and lower circular outer walls of the movable ring 22 are fixedly connected with clamps 21 to clamp the column 3, and the left sides of the two clamps 21 are clamping ends.

[0035] When clamping the column 3, the right sides of the two clamps 21 are pinched inward to increase the distance between the left sides of the two clamps 21, so that the column 3 can be moved between the two clamps 21. At this time, the right clamp 21 can be released to allow the clamp 21 to clamp the column 3.

[0036] like Figure 1 As shown, the upper outer wall of the column 3 is fixedly connected to the top plate 4, and a fixing foot 10 is provided between the upper outer wall of the connecting plate b9 and the bottom plate 1 to limit the position of the connecting plate b9, and the bottom plate 1 is transparent.

[0037] The transparent base plate 1 allows students to intuitively observe the working principle and operate the working parts on the lower side of the base plate 1 .

[0038] The implementation principle of this embodiment is: when the positive and negative poles of the wire 2 and the external power supply are energized, a magnetic field is generated, and the magnets 5 on the horizontal plate 6 are magnetically adsorbed to close or disconnect them. When the magnet 5 and the column 3 are closed or disconnected, the current in the control circuit can flow or terminate, thereby controlling the switching state of the controlled device. When storing, the vertical height of the relay can be lowered by folding the legs 14 inward, so that it can be placed in the experimental box. When adjusting the position of the horizontal plate 6, the distance between the adjusting nut 16 and the horizontal plate 6 can be adjusted by rotating it clockwise or counterclockwise, and different inclination angles of the horizontal plate 6 can be adjusted by different distances.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electromagnetic relay for teaching, comprising a base plate (1) and a transverse plate (6) mounted on the upper side of the base plate (1); A magnet (5) is fixedly connected inside the center of the horizontal plate (6); A column (3) is provided on the lower side of the magnet (5); The circular outer wall of the column (3) is wound with an electric wire (2); the upper outer wall of the base plate (1) is provided with a connecting plate b (9) near the front side; the upper outer wall of the base plate (1) is provided with a connecting plate a (8) near the rear side; the connecting plates a (8) and b (9) are both fixedly connected with a connector (7) at the center of the upper outer walls; Features: Support feet (14) are provided at the four corners of the lower outer wall of the bottom plate (1), and fixing sleeves (12) are fixedly connected to the four corners of the lower outer wall of the bottom plate (1).

2. The electromagnetic relay for teaching according to claim 1, characterized in that: A front-to-back through-through sliding groove (11) is provided inside the front end outer wall of the fixing sleeve (12), and a positioning rod (13) is transmission-connected between the sliding groove (11) and the supporting foot (14) to guide the tilting position of the supporting foot (14).

3. The electromagnetic relay for teaching according to claim 1, characterized in that: A threaded rod (15) is fixedly connected to the center of the transverse plate (6), and an adjusting nut (16) is threadedly connected to the circular outer wall of the threaded rod (15).

4. The electromagnetic relay for teaching according to claim 1, characterized in that: The front and rear end outer walls of the transverse plate (6) are both fixedly connected with fixing columns (18), and the upper end outer wall of the bottom plate (1) is fixedly connected with a fixing rod (19) near the right side.

5. The electromagnetic relay for teaching according to claim 4, characterized in that: Two fixing rods (19) are provided, and both fixing rods (19) are provided with a clamping groove (17) opening upwards to lift the fixing column (18).

6. The electromagnetic relay for teaching according to claim 1, characterized in that: A positioning shaft (20) is fixedly connected to the front end outer wall of the bottom plate (1), and a movable ring (22) is drivingly connected to the circular outer wall of the positioning shaft (20).

7. The electromagnetic relay for teaching according to claim 6, characterized in that: The circular outer walls at both ends of the movable ring (22) are fixedly connected with clamping plates (21) to clamp the column (3), and the left sides of the two clamping plates (21) are clamping ends.

8. The electromagnetic relay for teaching according to claim 1, characterized in that: The upper outer wall of the column (3) is fixedly connected to a top plate (4), and a fixing foot (10) is provided between the upper outer wall of the connecting plate b (9) and the bottom plate (1) to limit the position of the connecting plate b (9), and the bottom plate (1) is transparent.

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