Direct-current iron core micromotor

Abstract

The utility model discloses a direct current iron core micromotor, which relates to the technical field of motors, and comprises a lead connecting sheet arranged at the bottom end of a motor body, the surface of the motor body is provided with a mounting plate, the bottom end of the mounting plate is symmetrically provided with fixing blocks, and the surface of each fixing block is provided with a through groove for wiring; the bottom end of the fixing block is provided with a connecting rod, the connecting rod penetrates through the fixing block to be connected with a pressing plate, grooves are formed in the two sides of the pressing plate respectively, springs are connected into the grooves, and one side of each spring is connected with a positioning rod with the T-shaped section. According to the utility model, after the lead is contacted with the connecting sheet, the lead can pass through the through groove and extrude the pressing plate, so that the rubber block at the bottom end of the pressing plate extrudes and limits the lead, vibration generated when the motor works can drive the lead to vibrate together, and the situation that the lead falls off from the surface of the connecting sheet due to independent vibration of the motor is avoided; and normal use of the motor is influenced.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a DC iron core micro motor. Background Technology

[0002] The basic structure of a DC iron-core micromotor mainly consists of a fixed magnet (permanent magnet), an iron-core coil (rotor winding), brushes, a commutator, and a housing. The permanent magnet acts as the stator, providing a stable magnetic field; the iron-core coil acts as the rotor, generating a magnetic field when current flows through it, which interacts with the permanent magnet's magnetic field to produce rotational force. The brushes introduce current into the rotor winding, while the commutator ensures continuous torque output. Typically, two metal plates connected to wires are located at the rear of the DC iron-core micromotor to facilitate energizing the motor. Current DC iron-core micromotors generate some vibration during operation. Prolonged vibration can cause the connecting wires at the rear of the motor to detach from the metal plates, affecting the motor's normal operation. Utility Model Content

[0003] This invention provides a DC iron-core micro motor, which solves the problems in the background art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A DC iron core micro motor includes a wire connecting piece disposed at the bottom end of the motor body, a mounting plate disposed on the surface of the motor body, and fixing blocks symmetrically disposed at the bottom end of the mounting plate, and through grooves for wire routing are formed on the surface of the fixing blocks.

[0006] The bottom end of the fixing block is provided with a connecting rod, and the connecting rod passes through the fixing block and is connected to a pressure plate. The pressure plate has grooves on both sides, and a spring is connected inside the groove. A positioning rod with a "T" shaped cross section is connected to one side of the spring.

[0007] The fixing block has positioning holes on both sides that contact the positioning rod.

[0008] As a further description of the above technical solution:

[0009] The opening of the groove is provided with a stop for blocking the positioning rod.

[0010] As a further description of the above technical solution:

[0011] The bottom end of the pressure plate is connected to a rubber block that contacts the surface of the wire.

[0012] As a further description of the above technical solution:

[0013] The mounting plate has circular plates on both sides, and the inner wall of the circular plates is connected to a rack. The rack is connected to a gear, and the surface of the gear is connected to a threaded rod that is threaded to the mounting plate and the surface of the motor body.

[0014] As a further description of the above technical solution:

[0015] The circular plate has a groove at its bottom interior, and a slider that is rotatably connected to the bottom end of the threaded rod is slidably connected inside the groove.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0017] In this invention, after the wire comes into contact with the connecting piece, the wire can be passed through the through groove and the pressure plate is squeezed. The rubber block at the bottom of the pressure plate squeezes the wire and limits its movement. This allows the vibration generated by the motor to cause the wire to vibrate together, preventing the motor from vibrating alone and causing the wire to fall off the surface of the connecting piece, thus affecting the normal use of the motor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a DC iron core micro motor structure;

[0019] Figure 2 This is a schematic diagram of the bottom part of the motor body in this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the fixing block in this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the pressure plate of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the circular plate in this utility model.

[0023] Legend:

[0024] 1. Motor body; 2. Connecting piece; 3. Mounting plate; 4. Fixing block; 5. Through slot; 6. Connecting rod; 7. Pressure plate; 8. Groove; 9. Spring; 10. Positioning rod; 11. Positioning hole; 12. Stop block; 13. Rubber block; 14. Circular plate; 15. Rack; 16. Gear; 17. Threaded rod; 18. Slide groove; 19. Slider. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-5 A DC core micro motor includes a wire connecting piece 2 disposed at the bottom end of a motor body 1. A mounting plate 3 is disposed on the surface of the motor body 1, and fixing blocks 4 are symmetrically disposed at the bottom end of the mounting plate 3. A through groove 5 for wire routing is formed on the surface of the fixing blocks 4. A connecting rod 6 is disposed at the bottom end of the fixing blocks 4, and the connecting rod 6 passes through the fixing blocks 4 and connects to a pressure plate 7. Grooves 8 are formed on both sides of the pressure plate 7, and springs 9 are connected inside the grooves 8. A positioning rod 10 with a "T"-shaped cross-section is connected to one side of the spring 9. The fixing blocks 4 are respectively provided with positioning rods 10. After the wire is connected to the connecting piece 2 through the positioning hole 11, the wire is passed through the through groove 5 and connected to the designated equipment. By moving the connecting rod 6, the pressure plate 7 and rubber block 13 at its bottom end can be moved. The rubber block 13 can limit the wire to prevent the wire from falling off due to vibration generated during motor operation, which would affect the normal use of the motor. At the same time, the positioning rod 10 connected to it can be moved into the positioning hole 11 by the action of the spring 9, which can limit the pressure plate 7 and rubber block 13. The surface of the mounting plate 3 can be provided with heat dissipation fins to facilitate heat dissipation of the motor.

[0027] Furthermore, a stop 12 is provided at the opening of the groove 8 to block the positioning rod 10. The stop 12 is to prevent the spring 9 from popping the positioning rod 10 out of the groove 8.

[0028] Furthermore, the bottom end of the pressure plate 7 is connected to a rubber block 13 that contacts the surface of the wire. The rubber block 13 can prevent the pressure plate 7 from squeezing and damaging the wire.

[0029] Furthermore, circular plates 14 are respectively provided on both sides of the mounting plate 3, and a rack 15 is connected to the inner wall of the circular plate 14. A gear 16 is connected to the surface of the rack 15, and a threaded rod 17 is connected to the surface of the gear 16, which is threadedly connected to the surface of the mounting plate 3 and the motor body 1. Threaded grooves are opened on the surfaces of the mounting plate 3 and the motor body 1. By rotating the circular plate 14, it can rotate through the slider 19 and the slide groove 18. At the same time, the rack 15 on its inner wall can move on the surface of the gear 16, which can drive the threaded rod 17 to rotate inside the mounting plate 3. Since the mounting plate 3 and the threaded rod 17 are threadedly connected, the threaded rod 17 can rotate and move, so as to move the threaded rod 17 into the threaded groove on the surface of the motor body 1, thereby limiting the mounting plate 3, etc.

[0030] Furthermore, a groove 18 is provided at the bottom of the inner side of the circular plate 14, and a slider 19 is slidably connected inside the groove 18 and rotatably connected to the bottom of the threaded rod 17. This facilitates the circular plate 14 to move on the surface of the threaded rod 17 via the slider 19 and the groove 18.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A direct current core micro motor comprising a wire connecting tab (2) arranged at the bottom end of the motor body (1), characterized in that: The surface of the motor body (1) is provided with a mounting plate (3), and the bottom end of the mounting plate (3) is symmetrically provided with a fixing block (4), and the surface of the fixing block (4) is provided with a through groove (5) for wiring. The bottom end of the fixing block (4) is provided with a connecting rod (6), and the connecting rod (6) is connected with a pressing plate (7) penetrating through the fixing block (4), the both sides of the pressing plate (7) are respectively provided with a recess (8), and the inside of the recess (8) is connected with a spring (9), one side of the spring (9) is connected with a positioning rod (10) with a "T" shaped cross section. The both sides of the fixing block (4) are respectively provided with a positioning hole (11) in contact with the positioning rod (10). The opening of the recess (8) is provided with a stop block (12) for blocking the positioning rod (10). The bottom end of the pressing plate (7) is connected with a rubber block (13) in contact with the surface of the wire.

2. A DC core micro-motor according to claim 1, characterized in that: The both sides of the mounting plate (3) are respectively provided with a circular plate (14), and the inner wall of the circular plate (14) is connected with a rack (15), the rack (15) is connected with a gear (16), and the surface of the gear (16) is connected with a threaded rod (17) in screw connection with the surface of the mounting plate (3) and the motor body (1).

3. A DC core micro-motor according to claim 1, characterized in that: The inside bottom end of the circular plate (14) is provided with a sliding groove (18), and the inside of the sliding groove (18) is slidingly connected with a sliding block (19) in rotary connection with the bottom end of the threaded rod (17).

4. A DC core micro-motor according to claim 1, characterized in that: ​ 5. A DC core micro-motor according to claim 4, characterized in that: ​

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