Injection molding rotor structure

Abstract

The utility model relates to the technical field of injection-molded rotor structures, and discloses an injection-molded rotor structure, which comprises an injection-molded magnet and a rotating shaft, the outer side of the injection-molded magnet is provided with a casing, the injection-molded magnet is connected to the outer side wall of the rotating shaft, one end of the rotating shaft connected with the injection-molded magnet is provided with a snap ring, and a plurality of uniformly distributed balls are embedded in the snap ring and used for fixing the rotating shaft; a plurality of clamping blocks are arranged on the outer side of the clamping ring, a clamping groove is formed in the injection molding magnet, and the clamping blocks enter the clamping groove to enable the injection molding magnet and the rotating shaft to be relatively fixed. According to the utility model, the clamping ring is arranged at the joint of the rotating shaft and one end of the injection-molded magnet, so that the rotating shaft can be fixed with the injection-molded magnet through assembly, a glue connection mode is replaced, and meanwhile, the rotating shaft and the injection-molded magnet can be conveniently mounted; and a fixing plate is arranged at the joint of the other end and is matched with a clamping ring to fix the whole rotor structure, so that the stability in the rotor is improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molded rotor structure technology, and in particular to an injection molded rotor structure. Background Technology

[0002] In fan technology, injection-molded rotors, as one of the core components, are widely used in various fan systems, especially in industrial ventilation and air purification. Injection-molded rotors convert the mechanical energy of the fan into wind power, thus achieving airflow. However, existing injection-molded rotors still have some significant technical problems in their design and manufacturing process, limiting their performance in efficient, long-term operation.

[0003] Currently, most wind turbine injection-molded rotors are assembled using glue connections. While this method simplifies the manufacturing process to some extent, it leads to poor rotor structural stability. With vibrations and temperature changes during high-speed operation, glue connections are prone to loosening, aging, or breakage, resulting in rotor failure or operational instability. This structural instability not only affects the wind turbine's balance and efficiency but also increases the frequency of maintenance and replacement, incurring additional costs.

[0004] For example, Chinese Patent Publication No. CN219227312U, entitled "Brushless Motor Assembly for Automotive Cooling Fans," discloses a rotor assembly for a motor, including a rotor core, a shaft, and several magnetic tiles. The magnetic tiles are uniformly glued and fixed inside the rotor core. This design is simple, compact, and easy and efficient to install. However, this design uses a magnetic tile structure, requiring glue to bond each tile. It lacks a structure to prevent glue overflow, which can easily spill and remain inside the motor, potentially negatively impacting its performance.

[0005] Furthermore, during wind turbine operation, the rotor faces high-intensity friction and airflow impact, especially during prolonged high-load operation, which can easily cause wear, aging, or cracking of the rotor surface. Due to the weakness of adhesive bonding, this wear phenomenon is particularly noticeable at the contact surfaces between the rotor and other components, severely affecting the rotor's service life and the long-term stable operation of the wind turbine. Summary of the Invention

[0006] This invention addresses the shortcomings of existing technologies by providing an injection-molded rotor structure.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution.

[0008] An injection-molded rotor structure includes an injection-molded magnet and a rotating shaft. The injection-molded magnet has a housing on its outer side and is connected to the outer wall of the rotating shaft. A retaining ring is provided at the end of the rotating shaft connected to the injection-molded magnet. The retaining ring has multiple evenly distributed balls embedded in it for fixing the rotating shaft. Multiple retaining blocks are provided on the outer side of the retaining ring, and a retaining groove is provided inside the injection-molded magnet. The retaining blocks enter the retaining groove to fix the injection-molded magnet and the rotating shaft relative to each other.

[0009] Preferably, the other end of the rotating shaft connected to the injection-molded magnet is provided with a fixing plate. The fixing plate is provided with multiple fixing holes, and a first fixing bolt is matched in the fixing hole. The fixing plate is fixed to the machine housing by the first fixing bolt.

[0010] Preferably, the fixing plate includes a first positioning plate and a second positioning plate. Both the first positioning plate and the second positioning plate are provided with multiple corresponding fixing protrusions, and the fixing protrusions are connected by a second fixing bolt.

[0011] Preferably, the card slot includes an alignment part and a limiting part, which are connected to each other, and a limiting protrusion is provided at the connection.

[0012] Preferably, the outer side of the injection-molded magnet is provided with multiple circumferentially distributed heat dissipation holes.

[0013] Preferably, the fixing plate is provided with an annular protrusion, the shape of which matches the injection-molded magnet.

[0014] This utility model has significant technical effects due to the adoption of the above technical solutions: By setting a retaining ring at the connection between the rotating shaft and the injection-molded magnet at one end, the rotating shaft can be fixed by assembling it with the injection-molded magnet, replacing the glue connection method, and also facilitating the installation between the rotating shaft and the injection-molded magnet; by setting a fixing plate at the other end connection, in conjunction with the retaining ring, the entire rotor structure is fixed, improving the internal stability of the rotor. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an injection-molded rotor structure according to this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the retaining ring in an injection-molded rotor structure according to this utility model;

[0017] Figure 3 This is a side view of the retaining ring in an injection-molded rotor structure according to this utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of an injection-molded rotor structure according to this utility model;

[0019] Figure 5 This is a schematic diagram of the connection structure between the injection-molded magnet and the housing of an injection-molded rotor structure according to this utility model;

[0020] Figure 6 yes Figure 5 Enlarged structural diagram at point A in the middle;

[0021] Figure 7 This is a schematic diagram of the fixing plate in an injection-molded rotor structure according to this utility model. Figure 1 ;

[0022] Figure 8 This is a schematic diagram of the fixing plate in an injection-molded rotor structure according to this utility model. Figure 2 .

[0023] In the figure: 1—Injection-molded magnet, 11—Alignment part, 12—Limiting part, 13—Limiting protrusion, 14—Heat dissipation hole, 2—Rotating shaft, 3—Housing, 4—Snap ring, 41—Snap block, 42—Ball, 5—Fixing plate, 51—First positioning plate, 52—Second positioning plate, 53—Fixing hole, 54—First fixing bolt, 55—Fixing protrusion, 56—Second fixing bolt, 57—Annular protrusion. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] like Figures 1 to 8 The diagram illustrates an injection-molded rotor structure provided in this embodiment, comprising an injection-molded magnet 1 and a rotating shaft 2. A housing 3 is provided on the outer side of the injection-molded magnet 1, which is connected to the outer wall of the rotating shaft 2. A retaining ring 4 is provided at the end of the rotating shaft 2 connected to the injection-molded magnet 1. Multiple evenly distributed ball bearings 42 are embedded in the retaining ring 4 for fixing the rotating shaft 2. Multiple retaining blocks 41 are provided on the outer side of the retaining ring 4, and a retaining groove is provided inside the injection-molded magnet 1. The retaining blocks 41 enter the retaining groove to fix the injection-molded magnet 1 and the rotating shaft 2 relatively. In this embodiment, the retaining ring 4 and the rotating shaft 2 are pre-assembled. The multiple ball bearings 42 between the retaining ring 4 and the rotating shaft 2 ensure more even force distribution on the rotating shaft 2. Simultaneously, the multiple retaining blocks 41 evenly fixed within the retaining groove make the connection between the injection-molded magnet 1 and the rotating shaft 2 more stable, improving operational stability. By setting a retaining ring 4 at the connection between the rotating shaft 2 and the injection-molded magnet 1, the rotating shaft 2 can be fixed by assembling with the injection-molded magnet 1, which replaces the glue connection method and also facilitates the installation between the rotating shaft 2 and the injection-molded magnet 1.

[0026] The other end of the shaft 2, which connects to the injection-molded magnet 1, is provided with a fixing plate 5. The fixing plate 5 has multiple fixing holes 53, and a first fixing bolt 54 is fitted into each fixing hole 53. The fixing plate 5 is fixed to the housing 3 by means of the first fixing bolt 54. In this embodiment, by setting a fixing plate 5 at the other end connection, and cooperating with the retaining ring 4, the entire rotor structure is fixed, which improves the internal stability of the rotor.

[0027] The fixing plate 5 includes a first positioning plate 51 and a second positioning plate 52. Both the first positioning plate 51 and the second positioning plate 52 are provided with multiple corresponding fixing protrusions 55, and second fixing bolts 56 connect the fixing protrusions 55. In this embodiment, the fixing protrusions 55 between the first positioning plate 51 and the second positioning plate 52 are fixed by the second bolts, so that the first positioning plate 51 and the second positioning plate 52 are spliced ​​together to form a fixing plate 5, which serves to fix the entire rotor structure.

[0028] The slot includes an alignment part 11 and a limiting part 12. The alignment part 11 and the limiting part 12 are connected and a limiting protrusion 13 is provided at the connection. In this embodiment, the card block 41 is matched with the alignment part 11 so that the card block 41 can enter the slot. Then, the card block 41 is moved around the limiting protrusion 13 and into the limiting part 12 so that the card block 41 is fixed in the limiting part 12, thereby playing a fixing role.

[0029] The outer side of the injection-molded magnet 1 is provided with multiple circumferentially distributed heat dissipation holes 14. The heat dissipation holes 14 allow internal heat to circulate, reducing internal overheating problems.

[0030] The fixing plate 5 is provided with an annular protrusion 57, the shape of which matches the injection-molded magnet 1, and the annular protrusion 57 serves to secure the internal parts.

[0031] During assembly, the pre-installed retaining ring 4 is inserted into the injection-molded rotor, the retaining block 41 is aligned with the alignment part 11 and pressed in, and then the rotor is rotated to make the retaining block 41 enter the limiting part 12. Then the fixing plate 5 is fixed to the other end of the rotor and the injection-molded rotor. First, the first positioning plate 51 and the second positioning plate are spliced ​​on both sides of the rotor 2 and fixed with the second bolt to form the fixing plate 5. Then, the fixing plate 5 is fixed to the housing 3 with the first bolt to fix the entire rotor structure. The whole installation process is fast and improves the assembly efficiency.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that the elements inherent in a process, method, article, or apparatus that includes a list of elements are included. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element. Additionally, portions of the technical solutions provided in the embodiments of this application that are consistent with the implementation principles of corresponding technical solutions in the prior art have not been described in detail to avoid excessive elaboration.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An injection molded rotor structure, characterized by: The utility model relates to a kind of magnet injection molding and rotating shaft, including injection molding magnet (1) and rotating shaft (2), injection molding magnet (1) is equipped with machine shell (3) outside, injection molding magnet (1) is connected to the outer side wall of rotating shaft (2), rotating shaft (2) and the end of injection molding magnet (1) connection is equipped with snap ring (4), snap ring (4) is embedded with multiple evenly distributed ball (42), for fixed rotating shaft (2);Snap ring (4) outside is equipped with multiple clamping blocks (41), injection molding magnet (1) is equipped with clamping groove, clamping block (41) enters into clamping groove to make injection molding magnet (1) and rotating shaft (2) relatively fixed.

2. An injection molded rotor structure as defined in claim 1, wherein: Rotating shaft (2) and the other end of injection molding magnet (1) connection is equipped with fixed plate (5), fixed plate (5) is equipped with multiple fixed holes (53), fixed hole (53) is matched with first fixed bolt (54) in, by first fixed bolt (54) make fixed plate (5) and machine shell (3) are fixed.

3. An injection molded rotor structure as set forth in claim 2 wherein: Fixed plate (5) includes first positioning plate (51) and second positioning plate (52), and first positioning plate (51) and second positioning plate (52) are equipped with multiple corresponding fixed protrusions (55) on, and second fixed bolt (56) is connected between fixed protrusion (55).

4. An injection molded rotor structure as defined in claim 1, wherein: Clamping groove includes alignment part (11) and limiting part (12), and it is communicated to be arranged between alignment part (11) and limiting part (12), and it is equipped with limiting protrusion (13) in the communication.

5. An injection molded rotor structure as defined in claim 1, wherein: The outside of injection molding magnet (1) is equipped with multiple circumferentially distributed heat dissipation through-hole (14).

6. An injection molded rotor structure as set forth in claim 4, characterized in that: Fixed plate (5) is equipped with annular protrusion (57), and annular protrusion (57) shape is matched with injection molding magnet (1).

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