Rotor core structure and axial motor

Abstract

The utility model provides a rotor core structure. The rotor core structure comprises a rotor cover; a rotor core; wherein the rotor iron core and the rotor cover are fixedly connected with each other through insert die casting. The utility model further provides an axial motor which comprises the rotor core structure. According to the utility model, the rotor cover and the rotor iron core are fixedly connected together in an insert die-casting manner, so that the risk that the rotor iron core falls off due to glue bonding in the prior art is effectively avoided. Moreover, the rotor iron core is integrally die-cast into a single component, so that the structure is further simplified, the integrality is high, the adaptability is strong, the flatness of the matching surface between the rotor cover and the rotor iron core can be better controlled, and the performance of the axial motor is improved.

Description

Technical Field

[0001] The utility model relates to a rotor core structure and an axial motor. Background Art

[0002] The core structure of the existing axial motor rotor is formed by winding together slender strips of silicon steel sheets. Since the silicon steel sheets are wound together, the two end surfaces of the entire core will be uneven, and the flatness is difficult to ensure, which will lead to a large matching error between the magnetic tiles and the rotor core.

[0003] Furthermore, when silicon steel coils are used as rotor cores, they are cylindrical in shape and can only be connected to the rotor with glue. Axial motors are mostly low-speed, high-torque motors, and their rotors must withstand large rotational torques. Without rigid structural support, there is a risk of them falling off.

[0004] The prior art also offers a solution for forming a complete rotor core by splicing together multiple rotor core sub-components. However, this spliced rotor core cannot guarantee uniform flatness among an even number of magnetic tiles during assembly, and the use of glue to connect the rotor core and rotor shell still carries the risk of detachment.

[0005] Therefore, the art desires a rotor core structure that is simple in structure, highly reliable, and / or avoids the risk of the rotor core falling off. Utility Model Content

[0006] In response to the above-mentioned problems and needs, the present disclosure proposes a new technical solution, which solves the above-mentioned problems and brings other technical effects by adopting the following technical features.

[0007] The utility model provides a rotor core structure, comprising: a rotor cover; a rotor core; wherein the rotor core and the rotor cover are fixedly connected to each other through insert die-casting.

[0008] Preferably, the rotor core is a single component.

[0009] Preferably, the rotor core is an annular component.

[0010] Preferably, the rotor core is integrally die-casted from a soft magnetic composite material.

[0011] Preferably, the material of the rotor cover is aluminum.

[0012] Preferably, the inner circumference of the rotor cover includes at least one recess, the outer circumference of the rotor core includes at least one protrusion, and the at least one protrusion is embedded in the at least one recess.

[0013] Preferably, the flatness of the mating surfaces of the rotor core and the rotor cover is less than or equal to 0.05 mm.

[0014] Preferably, the rotor core structure further includes magnetic tiles arranged on the rotor core.

[0015] Preferably, the magnetic tiles are fixed on the rotor core by surface mounting.

[0016] The utility model also provides an axial motor, comprising the rotor core structure as described above.

[0017] This utility model proposes a fixed connection between the rotor cover and the rotor core through insert die-casting, effectively avoiding the risk of the rotor core falling off due to glue bonding in the prior art. Furthermore, by integrally die-casting the rotor core as a single component, the structure is further simplified, achieving high integrity and adaptability. Furthermore, the flatness of the mating surface between the rotor cover and the rotor core can be better controlled, thereby improving axial motor performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an exploded view of the rotor core structure according to a preferred embodiment of the present invention;

[0019] Figure 2 A view showing the rotor cover and the rotor core being matched together according to a preferred embodiment of the present invention;

[0020] Figure 3 This is a view of an assembled rotor core structure according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiment of the present disclosure will be clearly and completely described below in conjunction with the drawings of the specific embodiments of the present disclosure. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0022] Compared to the embodiments shown in the drawings, feasible embodiments within the scope of protection of the present disclosure may have fewer components, additional components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0023] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by those skilled in the art in the art to which this disclosure pertains. The terms "first," "second," and similar expressions used in the patent specification and claims of this disclosure do not denote any order, quantity, or importance, but are merely used to distinguish different components. When the number of components is not specified, the number of components may be one or more; similarly, terms such as "a," "the," and "said" do not necessarily indicate a quantitative limitation. Terms such as "include" or "comprising" mean that the element or object preceding the term encompasses the elements or objects listed after the term, and their equivalents, without excluding other elements or objects. Terms such as "mounted," "disposed," "connected," and "connected" are not limited to physical or mechanical mounting, disposition, or connection, but may include electrical mounting, disposition, or connection, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative orientations of devices during use or as shown in the accompanying drawings. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] The principle and structure of the present utility model are described below with reference to the accompanying drawings.

[0025] Figure 1 The figure shows an exploded view of a rotor core structure according to a preferred embodiment of the present invention. According to the preferred embodiment, the rotor core structure comprises: a rotor cover 1; a rotor core 2; wherein the rotor core 2 and the rotor cover 1 are fixedly connected to each other by insert die-casting.

[0026] Compared to existing adhesive bonding methods, the insert die-casting method used in this utility model provides a more reliable and structurally stronger connection between the rotor cover and rotor core, eliminating the risk of the rotor core falling off due to a weak adhesive bond during operation. Furthermore, the insert die-casting connection achieves a higher degree of integration between the rotor cover and rotor core, ensuring greater dimensional accuracy and adapting to a variety of magnetic tile configurations.

[0027] In a preferred embodiment of the present invention, the rotor core 2 is a single component; preferably, it is an annular component. More preferably, the rotor core 2 is integrally die-cast from a soft magnetic composite material (e.g., using insulated iron core powder molding technology, a near-net-shape forming technique). This rotor core avoids the conventional silicon steel sheet winding process and avoids problems such as curling, hemming, and rust. Furthermore, the rotor cover 1 is preferably made of aluminum.

[0028] The manufacturing process of the rotor core structure can adopt a conventional insert die-casting process. For example, the rotor core 2 can be first formed by integral die-casting, and then placed in a die-casting mold for manufacturing the rotor cover 1. Then, the rotor cover 1 and the rotor core 2 are combined into a component fixedly connected together by a conventional insert die-casting process, such as Figure 2 shown.

[0029] Further preferably, the inner circumference 10 of the rotor cover 1 may include at least one recess 11, and the outer circumference 20 of the rotor core 2 may include at least one protrusion 21, with the at least one protrusion 21 embedded in the at least one recess 11. This embedded fit between the protrusion and the recess increases the fit strength between the rotor core and the rotor cover, and can also support the circumferential torque of the motor.

[0030] In addition, due to the insert die-cast connection between the rotor cover 1 and the rotor core 2, the flatness of the mating surface between the rotor core 2 and the rotor cover 1 can be less than or equal to 0.05 mm, and more preferably, the flatness can be less than or equal to 0.02 mm, thereby better improving the performance of the axial motor.

[0031] According to a further preferred embodiment, the rotor core structure further comprises a magnetic tile 3 arranged on the rotor core 2, such as Figure 3 The magnetic tiles 3 can be fixed to the rotor core 2 by surface mounting, thereby further simplifying the rotor core structure and its manufacturing process. In addition, according to a preferred embodiment, the number of magnetic tiles 3 can be an even number.

[0032] Furthermore, the present invention provides an axial motor, which includes the rotor core structure as described above.

[0033] In summary, the present invention proposes a fixed connection between the rotor cover and the rotor core through insert die-casting, effectively avoiding the risk of the rotor core falling off due to glue bonding in the prior art. Furthermore, by integrally die-casting the rotor core as a single component, the structure is further simplified, resulting in high integrity and adaptability. Furthermore, the flatness of the mating surface between the rotor cover and the rotor core can be better controlled, thereby improving axial motor performance.

[0034] The exemplary implementation methods of the present disclosure are described in detail above with reference to preferred embodiments. However, it will be understood by those skilled in the art that, without departing from the concept of the present disclosure, various variations and modifications may be made to the above-mentioned specific embodiments, and various technical features and structures proposed in the present disclosure may be combined in various ways without exceeding the scope of protection of the present disclosure, which is determined by the appended claims.

Claims

1. A rotor core structure, characterized in that: include: Rotor cover (1); a rotor core (2); The rotor core (2) and the rotor cover (1) are fixedly connected to each other through insert die-casting.

2. The rotor core structure according to claim 1, wherein: The rotor core (2) is a single component.

3. The rotor core structure according to claim 2, wherein: The rotor core (2) is a circular ring-shaped component.

4. The rotor core structure according to claim 2, wherein: The rotor core (2) is integrally die-casted from a soft magnetic composite material.

5. The rotor core structure according to claim 1, wherein: The material of the rotor cover (1) is aluminum.

6. The rotor core structure according to claim 1, wherein: The inner periphery (10) of the rotor cover (1) includes at least one recess (11), the outer periphery (20) of the rotor core (2) includes at least one protrusion (21), and the at least one protrusion (21) is embedded in the at least one recess (11).

7. The rotor core structure according to claim 1, wherein: The flatness of the matching surfaces of the rotor core (2) and the rotor cover (1) is less than or equal to 0.05 mm.

8. The rotor core structure according to any one of claims 1 to 7, wherein: It also includes magnetic tiles (3) arranged on the rotor core (2).

9. The rotor core structure according to claim 8, wherein: The magnetic tile (3) is fixed on the rotor core (2) by surface bonding.

10. An axial motor, characterized in that: The invention comprises a rotor core structure according to any one of claims 1 to 9.

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