Novel rotor mechanism for stepping motor

Abstract

The utility model discloses a novel stepping motor rotor mechanism, comprising an iron core, the top and bottom of the outer wall of the iron core are respectively sleeved with bearings, the inner sides of the two bearings of the outer wall of the iron core are sleeved with permanent magnets, the iron core comprises an iron core main body, the bottom of the outer wall of the iron core main body is fixedly connected with a plurality of connecting rods in an annular array, and the connecting rods are connected with the iron core main body. The permanent magnet comprises two permanent magnet main bodies, inner connecting rods are fixedly connected to the inner walls of the two permanent magnet main bodies in an annular array mode, and the multiple inner connecting rods on the inner walls of the two permanent magnet main bodies are slidably connected to the inner sides of the multiple connecting rods on the outer wall of the iron core main body. According to the connecting structure between the connecting disc and the permanent magnet main body, through mutual cooperation of the connecting rods, the connecting grooves, the clamping blocks, the sliding grooves, the sliding blocks, the springs and the rotating rods, stable connection between the connecting disc and the permanent magnet main body is achieved, and the overall reliability and durability of the rotor are improved.

Description

Technical Field

[0001] This utility model relates to the field of stepper motor technology, specifically to a novel rotor mechanism for stepper motors. Background Technology

[0002] A stepper motor, a special type of electric motor, operates based on electromagnetic principles. It achieves precise control of the relative position between the rotor and stator by progressively controlling the number and direction of input pulses. This type of motor does not rely on a continuous rotating magnetic field to generate motion; instead, it relies on a series of discrete steps with fixed angles to achieve precise position adjustment.

[0003] According to patent document CN207134973U, a fast stepper motor (40) is disclosed, which includes: a right half-shell (1); a left half-shell (19); a stator assembly (2; 2) that generates an alternating electromagnetic field; a rotor (5) that converts the alternating electromagnetic field of the stator assembly (2; 2) into rotational motion; and a gear transmission mechanism that transmits the rotational energy of the rotor, wherein the gear transmission mechanism has a transmission ratio of 1:30.

[0004] The rotor of a new stepper motor, as one of its core components, is directly related to the motor's performance in terms of design and manufacturing. The rotor is generally composed of two permanent magnets with opposite polarities. These two permanent magnets are fixed to the rotor's iron core at a specific angle. Their interaction generates a rotating magnetic field when current passes through the stator coils. This magnetic field interacts with the permanent magnets on the rotor, thereby driving the rotor to rotate. However, when the two permanent magnets are connected, they are usually connected by threads or directly fixed to the rotor's iron core. While such connection methods can basically meet the needs of normal operation, they are insufficient when facing high-speed rotation, high load, or extreme working conditions. Utility Model Content

[0005] The purpose of this invention is to provide a novel rotor mechanism for stepper motors, which solves the problem mentioned in the background art that when two permanent magnets are connected, they are usually connected by threads or directly fixed to the iron core of the rotor. Although the stability of such connection methods can basically meet the needs of normal operation, they are inadequate when facing high-speed rotation, high load or extreme working conditions.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel rotor mechanism for a stepper motor, comprising an iron core, wherein bearings are respectively fitted on the top and bottom of the outer wall of the iron core, and permanent magnets are fitted on the inner sides of the two bearings on the outer wall of the iron core;

[0007] The iron core includes an iron core body, and multiple connecting rods are fixedly connected in a ring array to the bottom of the outer wall of the iron core body.

[0008] Preferably, the permanent magnet includes two permanent magnet bodies, and the inner walls of the two permanent magnet bodies are fixedly connected with inner connecting rods in a ring array. The multiple inner connecting rods on the inner walls of the two permanent magnet bodies are slidably connected to the inner side of multiple connecting rods on the outer wall of the iron core body.

[0009] Preferably, the outer walls of both permanent magnet bodies are fixedly connected with conductive disks, and the opposing surfaces of the two permanent magnet bodies are provided with connecting slots in a circular array.

[0010] Preferably, a connecting disk is provided on the opposite side of the two permanent magnet bodies, and multiple connecting rods are fixedly connected in a ring array on the inner wall of the connecting disk, and the two permanent magnet bodies and the inner wall of the connecting disk are sleeved on the outer wall of the iron core body.

[0011] Preferably, the upper and lower sides of the outer walls of the plurality of connecting rods are movably connected to the inner walls of the two permanent magnet bodies through connecting grooves, and the top and bottom of the outer walls of the plurality of connecting rods are rotatably connected with locking blocks in a circular array.

[0012] Preferably, each of the multiple sets of locking blocks has a sliding groove on its inner side, and each of the multiple sets of sliding grooves has a slider slidably connected to its inner wall. Each of the multiple sets of sliders has a spring fixedly connected to the side of the sliders near the connecting rod, and each of the multiple sets of sliders has a rotating rod rotatably connected to the side of the sliders away from the locking blocks. Each of the multiple sets of rotating rods has a rotating rod rotatably connected to the outer wall of the connecting rod away from the multiple sets of locking blocks on the side away from the sliders.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. By setting up a tight fit between the iron core body and the permanent magnet, the rotor mechanism can be more stable and efficient during operation. Specifically, the inner connecting rod on the permanent magnet body is slidably connected to the connecting rod on the outer wall of the iron core body. This design not only ensures that the permanent magnet can be firmly fixed on the iron core, but also allows the permanent magnet to have a certain degree of freedom to adjust when subjected to external forces, thereby improving the flexibility and durability of the entire rotor mechanism.

[0015] 2. By setting up a permanent magnet and a connecting plate, the connection structure between the connecting plate and the permanent magnet body, through the cooperation of connecting rods, connecting grooves, locking blocks, sliding grooves, sliders, springs and rotating rods, a stable connection between the connecting plate and the permanent magnet body is achieved, which improves the overall reliability and durability of the rotor. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main three-dimensional structure of the present utility model;

[0017] Figure 2 This is a schematic diagram of the three-dimensional separation structure of the main body of this utility model;

[0018] Figure 3 This is a schematic diagram of the three-dimensional structure of the iron core of this utility model;

[0019] Figure 4 This is a schematic diagram of the three-dimensional separation structure of the permanent magnet of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the connecting disc portion of this utility model.

[0021] In the diagram: 1. Iron core; 11. Iron core body; 12. Connecting rod; 2. Permanent magnet; 21. Permanent magnet body; 22. Guide disk; 23. Connecting groove; 24. Inner connecting rod; 25. Connecting disk; 26. Connecting rod; 27. Locking block; 28. Slide groove; 29. ​​Sliding block; 210. Rotating rod; 211. Spring; 3. Bearing. Detailed Implementation

[0022] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1 This utility model provides a technical solution: a novel rotor mechanism for a stepper motor, comprising an iron core 1, with bearings 3 respectively fitted on the top and bottom of the outer wall of the iron core 1, and permanent magnets 2 fitted on the inner sides of the two bearings 3 on the outer wall of the iron core 1.

[0024] Please see Figures 2-5The iron core 1 includes an iron core body 11. Multiple connecting rods 12 are fixedly connected in a ring array to the bottom of the outer wall of the iron core body 11. The permanent magnet 2 includes two permanent magnet bodies 21. Inner connecting rods 24 are fixedly connected in a ring array to the inner walls of both permanent magnet bodies 21. Multiple inner connecting rods 24 on the inner walls of the two permanent magnet bodies 21 are slidably connected to the inner side of the multiple connecting rods 12 on the outer wall of the iron core body 11. A guide disk 22 is fixedly connected to the outer walls of both permanent magnet bodies 21. Connecting grooves 23 are formed in a ring array on the opposite sides of both permanent magnet bodies 21. Connecting disks 25 are provided on the opposite sides of the two permanent magnet bodies 21. Multiple connecting rods 26 are fixedly connected in a ring array to the inner wall of the connecting disks 25. The inner walls of the magnet body 21 and the connecting plate 25 are fitted onto the outer wall of the iron core body 11. The upper and lower sides of the outer walls of multiple connecting rods 26 are movably connected to the inner walls of the two permanent magnet bodies 21 through connecting grooves 23. The top and bottom of the outer walls of multiple connecting rods 26 are rotatably connected to the locking blocks 27 in a circular array. The inner sides of multiple locking blocks 27 are provided with sliding grooves 28. The inner walls of multiple sliding grooves 28 are slidably connected to sliders 29. The side of multiple sliders 29 near the connecting rods 26 is fixedly connected to a spring 211. The side of multiple sliders 29 away from the locking blocks 27 is rotatably connected to a rotating rod 210. The side of multiple rotating rods 210 away from the sliders 29 is rotatably connected to the outer wall of the connecting rods 26 away from the locking blocks 27.

[0025] When it is necessary to connect the whole, bring the two permanent magnet bodies 21 close together so that their connecting grooves 23 are aligned with the connecting rods 26 on the connecting plate 25. As the permanent magnet bodies 21 move closer, the connecting rods 26 will gradually go deeper along the connecting grooves 23 until the predetermined connection position is reached. At this time, the locking block 27 on the connecting rod 26 will be squeezed by the inner wall of the permanent magnet body 21, causing the slider 29 in the sliding groove 28 on the inner side of the locking block 27 to slide inward, while compressing the spring 211.

[0026] When the connecting rod 26 is fully inserted into the connecting groove 23, the elastic force of the spring 211 will push the slider 29 to slide outward, thereby causing the locking block 27 to unfold outward and lock into the inner wall of the permanent magnet body 21. In this way, the connecting rod 26 is firmly locked in the connecting groove 23, realizing a stable connection between the two permanent magnet bodies 21 and the connecting plate 25.

[0027] This achieves a quick and stable connection between the permanent magnet body 21 and the connecting plate 25. This connection method not only simplifies the assembly process and improves production efficiency, but also ensures the stability and reliability of the motor during operation.

[0028] Working principle: When using this device, to connect the entire assembly, bring the two permanent magnet bodies 21 close together so that their connecting grooves 23 align with the connecting rods 26 on the connecting plate 25. As the permanent magnet bodies 21 move closer, the connecting rods 26 gradually penetrate along the connecting grooves 23 until they reach the predetermined connection position. At this time, the locking block 27 on the connecting rod 26 is squeezed by the inner wall of the permanent magnet body 21, causing the slider 29 in the groove 28 inside the locking block 27 to slide inward, while simultaneously compressing the spring 211. When the connecting rod... After the connecting rod 26 is fully inserted into the connecting groove 23, the elastic force of the spring 211 will push the slider 29 to slide outward, thereby causing the locking block 27 to unfold outward and lock into the inner wall of the permanent magnet body 21. In this way, the connecting rod 26 is firmly locked in the connecting groove 23, realizing a stable connection between the two permanent magnet bodies 21 and the connecting plate 25. This achieves a fast and stable connection between the permanent magnet bodies 21 and the connecting plate 25. This connection method not only simplifies the assembly process and improves production efficiency, but also ensures the stability and reliability of the motor during operation.

[0029] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel rotor mechanism for a stepper motor, comprising an iron core (1), characterized in that: The top and bottom of the outer wall of the iron core (1) are respectively fitted with bearings (3), and permanent magnets (2) are fitted inside the two bearings (3) on the outer wall of the iron core (1). The iron core (1) includes an iron core body (11), and a plurality of connecting rods (12) are fixedly connected in a ring array at the bottom of the outer wall of the iron core body (11); The permanent magnet (2) includes two permanent magnet bodies (21). The inner walls of the two permanent magnet bodies (21) are fixedly connected with inner connecting rods (24) in a ring array. The multiple inner connecting rods (24) on the inner walls of the two permanent magnet bodies (21) are slidably connected to the inner side of multiple connecting rods (12) on the outer wall of the iron core body (11).

2. The novel rotor mechanism for a stepper motor according to claim 1, characterized in that: The outer walls of the two permanent magnet bodies (21) are fixedly connected with a magnetic disk (22), and the opposing surfaces of the two permanent magnet bodies (21) are provided with a ring array of connecting slots (23).

3. The novel rotor mechanism for a stepper motor according to claim 1, characterized in that: A connecting disk (25) is provided on the opposite side of the two permanent magnet bodies (21). Multiple connecting rods (26) are fixedly connected in a ring array on the inner wall of the connecting disk (25). The inner walls of the two permanent magnet bodies (21) and the connecting disk (25) are fitted onto the outer wall of the iron core body (11).

4. A novel rotor mechanism for a stepper motor according to claim 3, characterized in that: The upper and lower sides of the outer walls of the multiple connecting rods (26) are movably connected to the inner walls of the two permanent magnet bodies (21) through connecting grooves (23), and the top and bottom of the outer walls of the multiple connecting rods (26) are rotatably connected with locking blocks (27) in a ring array.

5. A novel rotor mechanism for a stepper motor according to claim 4, characterized in that: Each of the multiple sets of locking blocks (27) has a sliding groove (28) on its inner side. Each of the multiple sets of sliding grooves (28) has a slider (29) slidably connected to its inner wall. Each of the multiple sets of sliders (29) has a spring (211) fixedly connected to the side of the connecting rod (26) near the slider. Each of the multiple sets of sliders (29) has a rotating rod (210) rotatably connected to the side of the connecting rod (26) away from the locking block (27). Each of the multiple sets of rotating rods (210) has a rotating rod rotatably connected to the side of the connecting rod (26) away from the slider (29) on its outer wall away from the multiple sets of locking blocks (27).

Images