Rapid rotor assembly structure

Abstract

The utility model discloses a rotor rapid assembly structure, and relates to the technical field of motor manufacturing. The magnetic ring is made of injection-molded ferrite or injection-molded rubidium-iron-boron; the bushing and the magnetic ring are integrally formed; wherein the shaft, the magnetic ring and the bushing are integrated into an integral part through an injection molding process; according to the technical scheme provided by the utility model, the shaft, the magnetic ring and the bushing are integrated into an integral part by adopting an injection molding technology, so that an additional glue fixing step is omitted, the assembly structure is simplified, and the assembly speed is also improved. The integrated combination of the shaft and the magnetic ring is realized through the injection molding process, a traditional bonding mode is replaced, the mechanical strength of the assembly is greatly improved, and higher reliability and stability are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of motor manufacturing, in particular to a rotor rapid assembly structure. Background Art

[0002] In traditional motor rotor manufacturing, the inner rotor typically consists of a shaft, a bushing, and a magnetic ring. The assembly process involves pressing the shaft into the bushing, securing the semi-finished product and the magnetic ring with a retaining fixture, applying glue to the recessed areas, and waiting for over eight hours to cure the assembly to ensure it is ready for use. This traditional method suffers from dimensional tolerances that affect bonding strength, poor mechanical strength, low efficiency, and high costs.

[0003] Because the bushing is a machined part with a certain dimensional tolerance, this directly affects the glue's permeability and ultimate bonding strength. The rotor's fixation relies entirely on the glue's bonding strength, which provides insufficient mechanical strength and is prone to failure, especially in high-load or vibration environments. The entire assembly process is complex, requiring multiple turnovers (at least five), a large number of positioning jigs, and a long curing process (>8 hours). This extends the production cycle and significantly limits actual production efficiency. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a rotor quick assembly structure to solve the problems in the background art.

[0005] In view of this, the utility model provides a rotor quick assembly structure, comprising:

[0006] axis;

[0007] Magnetic ring, the material of the magnetic ring is injection-molded ferrite or injection-molded nylon iron boron;

[0008] a bushing, the bushing being integrally formed with the magnetic ring;

[0009] The shaft, magnetic ring and bushing are integrated into an integral component through an injection molding process.

[0010] Optionally, the shaft has a D-shaped end surface.

[0011] Optionally, the shaft and the magnetic ring are directly embedded in the magnetic ring through an injection molding process to achieve an integrated combination of the two.

[0012] Optionally, the magnetic ring is placed on the shaft before injection molding and injection molding is performed simultaneously, thereby eliminating the turnover and several steps in the traditional rotor assembly process.

[0013] It can be seen from the above technical solutions that the embodiments of the present invention have the following advantages:

[0014] This utility model utilizes injection molding technology to integrate the shaft, magnetic ring, and bushing into a single, integral component, eliminating the need for additional gluing and fixing steps. This simplifies the assembly structure and increases assembly speed. The integrated connection of the shaft and magnetic ring achieved through injection molding replaces traditional bonding methods, significantly enhancing the mechanical strength of the assembly and ensuring greater reliability and stability.

[0015] 2. The utility model adopts a rotor rapid assembly structure, which eliminates the use of metal bushings and high-temperature resistant glue, directly saving the cost of these materials; reduces the manufacturing and storage space requirements of special jigs, further reducing indirect costs; reduces labor costs due to the reduction of assembly processes; eliminates curing waiting time, and improves the flexibility and response speed of the production line.

[0016] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of the present utility model.

[0020] Description of the accompanying drawings: 1. shaft; 2. magnetic ring; 3. bushing. DETAILED DESCRIPTION

[0021] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0022] A rotor quick assembly structure according to an embodiment of the present utility model will be described in detail below with reference to the accompanying drawings. Example

[0023] For easier understanding, see Figures 1 to 2 , an embodiment of a rotor quick assembly structure provided by the present utility model includes:

[0024] Axis 1;

[0025] Magnetic ring 2, the material of the magnetic ring 2 is injection-molded ferrite or injection-molded nylon iron boron;

[0026] A bushing 3, wherein the bushing 3 is integrated with the magnetic ring 2;

[0027] The shaft 1 , the magnetic ring 2 and the bushing 3 are integrated into an integral component through an injection molding process.

[0028] In some embodiments, the shaft 1 has a D-shaped end surface. The shaft 1 and the magnetic ring 2 are integrated by directly embedding the shaft 1 within the magnetic ring 2 through an injection molding process. The magnetic ring 2 is placed into the shaft 1 before injection molding, and the molding process is performed simultaneously, eliminating the traditional rotor assembly process involving multiple rotations and steps.

[0029] It should be noted that the shaft 1 has a structure with a "D"-shaped end face, wherein the magnetic ring 2 is made of injection-molded ferrite or injection-molded nylon-iron-boron.

[0030] Before injection molding, the shaft 1 is placed in the specified position in the mold, and then the material of the magnetic ring 2 is injected into the mold, and the bushing 3 and the magnetic ring 2 are integrated at the same time. The magnetic ring 2 is limited in position by the plastic part, and no additional glue is needed to fix it.

[0031] The connection between shaft 1 and magnetic ring 2 is achieved through injection molding. During the injection molding process, the magnetic ring 2 material solidifies around the shaft 1, which is pre-placed in the mold, forming a tight, integrated bond. This bonding method not only improves mechanical strength but also eliminates the impact of dimensional tolerances on glue penetration in traditional assembly, thereby ensuring a higher final bond strength.

[0032] The rotor structure of this utility model eliminates multiple steps in traditional rotor assembly. The traditional assembly process involves inserting the shaft 1, inserting the magnetic ring 2, applying glue, and curing, requiring five cycles, numerous positioning jigs, and over eight hours of curing time. However, the utility model only requires pressing the shaft 1 in and then magnetizing to complete the assembly, requiring only two cycles, significantly reducing production time and costs.

[0033] In summary, the rotor assembly-free structure of the present invention significantly reduces material costs, as the metal bushing 3 and high-temperature-resistant glue are no longer required. Furthermore, it saves manufacturing and storage space for specialized jigs, reduces labor requirements, and avoids long curing wait times. All of these improvements directly lead to increased production efficiency and reduced overall costs.

[0034] Working Principle: The traditionally separate shaft 1, magnetic ring 2, and bushing 3 are integrated into an integral component through an injection molding process. During the manufacturing process, the shaft 1 with a specific geometric shape, such as a D-shaped end face, is first placed in the mold, and then a magnetic material such as injection-molded ferrite or injection-molded nebium iron boron is injected. After solidification, the magnetic ring 2 is formed and forms an inseparable whole with the shaft 1 and bushing 3. This not only eliminates the need for additional glue, but also avoids the bonding force problems caused by dimensional tolerances. The shaft 1 and the magnetic ring 2 do not rely on traditional bonding methods, but are directly embedded through the injection molding process. During the injection molding process, the magnetic ring 2 material solidifies around the shaft 1 pre-placed in the mold, forming a tight and strong connection. This method improves the mechanical strength of the component and ensures stable performance even in high-load or vibration environments.

[0035] As described above, the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotor quick assembly structure, characterized by: include: axis(1); A magnetic ring (2), wherein the material of the magnetic ring (2) is injection-molded ferrite or injection-molded rubidium iron boron; A bushing (3), the bushing (3) and the magnetic ring (2) are integrally formed; The shaft (1), the magnetic ring (2) and the bushing (3) are integrated into an integral component through an injection molding process.

2. A rotor quick assembly structure according to claim 1, characterized in that: The shaft (1) has a structure with an end face in a "D" shape.

3. The rotor quick assembly structure according to claim 1, characterized in that: The shaft (1) and the magnetic ring (2) are connected by an injection molding process, with the shaft (1) being directly embedded in the magnetic ring (2).

4. The rotor quick assembly structure according to claim 1, characterized in that: The magnetic ring (2) is placed in the shaft (1) before injection molding, and injection molding is performed simultaneously.

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