Rear permanent magnet synchronous motor iron core

Abstract

The utility model provides a rear permanent magnet synchronous motor iron core, which comprises a plurality of outer iron core ring sheets and a plurality of inner iron core ring sheets, the plurality of outer iron core ring sheets and the plurality of inner iron core ring sheets are independently overlapped and fixed together to form an outer iron core, and the outer iron core ring sheets and the plurality of inner iron core ring sheets are independently overlapped and fixed together to form an inner iron core. The plurality of inner iron core ring sheets are independently overlapped and fixed together to form an inner iron core, the outer iron core formed by the outer iron core ring sheets is coaxially sleeved outside the inner iron core formed by the inner iron core ring sheets to form a stator iron core, and the outer iron core ring sheets are clamped with the corresponding inner iron core ring sheets; according to the integral arrangement, when the winding is wound, the outer iron core formed by the outer iron core ring pieces and the inner iron core formed by the inner iron core ring pieces can be split, and the opening of the winding groove is exposed, so that when the winding is wound into the winding groove, the winding is not blocked, and the winding is convenient.

Description

Technical Field

[0001] This utility model relates to the field of motors, and in particular to a rear-mounted permanent magnet synchronous motor core. Background Technology

[0002] The working principle of a permanent magnet synchronous motor is based on electromagnetic induction and electromagnetic force. When three-phase alternating current is applied to the stator windings of the motor, a rotating magnetic field is generated. This rotating magnetic field interacts with the magnetic field generated by the permanent magnet, producing an electromagnetic force that causes the rotor to rotate. Because the rotor's speed is the same as the speed of the rotating magnetic field, it is called a synchronous motor.

[0003] However, the existing rear-mounted permanent magnet synchronous motor core is not convenient for winding the stator core, thus presenting certain limitations.

[0004] Therefore, it is essential to invent a rear-mounted permanent magnet synchronous motor core that facilitates winding. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a technical solution for a rear-mounted permanent magnet synchronous motor core, which includes an outer core ring and an inner core ring, wherein: the outer core ring and the inner core ring are respectively provided with a plurality of pieces, the plurality of outer core ring pieces are individually stacked and fixed together to form an outer core, the plurality of inner core ring pieces are individually stacked and fixed together to form an inner core, the outer core composed of the outer core rings is coaxially sleeved on the outside of the inner core composed of the inner core rings to form a stator core, and the outer core rings are snapped together with the corresponding inner core rings;

[0006] The outer circumferential surface of the inner core ring is uniformly provided with several open winding slots. The opening of the winding slots faces one side of the outer core ring. A protrusion for winding is formed between every two adjacent winding slots. The winding slots and protrusions on every two adjacent inner core rings are superimposed and correspond to each other.

[0007] The inner circumferential surface of the outer iron core ring is evenly provided with a number of slots, and the slots on each two adjacent outer iron core rings are superimposed and correspond to each other.

[0008] Each of the protrusions of the inner core ring is provided with an integral locking block at one end facing the outer core ring, and the volume of the locking block is smaller than the volume of the protrusion.

[0009] The card block is stuck in the corresponding card slot.

[0010] Each of the outer core rings has a number of external riveting holes evenly distributed throughout its surface. The external riveting holes on every two adjacent outer core rings are superimposed and correspond to each other. External riveting posts are fixedly installed in the external riveting holes between the outer core rings.

[0011] Each of the outer iron core rings has a number of ventilation slots evenly distributed on its outer circumferential surface, and the ventilation slots on every two adjacent outer iron core rings are superimposed and correspond to each other.

[0012] Each of the inner core ring plates has an open ventilation slot through its protrusion, with the opening of the ventilation slot facing the center of the inner core ring plate. The ventilation slots on every two adjacent inner core ring plates overlap and correspond to each other.

[0013] Each inner core ring has several internal riveting holes through its surface. The internal riveting holes on every two adjacent inner core rings are superimposed and correspond to each other. An internal riveting post is fixedly installed in the internal riveting hole between the inner core rings.

[0014] Each of the inner core rings has several ventilation holes through its surface, and the ventilation holes are arranged alternately with the inner riveting holes and ventilation grooves.

[0015] Compared with the prior art, the advantages of this utility model are:

[0016] The overall design of this invention allows for the separation of the outer core (composed of outer iron core rings) from the inner core (composed of inner iron core rings) during winding, exposing the openings of the winding slots. This ensures unobstructed winding of the winding into the slots, facilitating the winding process. Furthermore, after winding, the outer iron core rings seal the openings of the winding slots, ensuring the stability of the winding on the inner iron core rings and preventing loosening or detachment, thus enhancing safety and reliability. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is an exploded structural diagram of the present invention.

[0019] Figure 3 This is a schematic diagram of the outer iron core ring structure of this utility model.

[0020] Figure 4 This is a schematic diagram of the inner iron core ring structure of this utility model.

[0021] In the picture:

[0022] 1. Outer core ring, 2. Inner core ring, 3. Outer rivet post, 4. Inner rivet post, 5. Outer rivet hole, 6. Slot, 7. Ventilation slot, 8. Block, 9. Winding slot, 10. Ventilation slot, 11. Inner rivet hole, 12. Ventilation hole. Detailed Implementation

[0023] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0024] In the description of the embodiments, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in the present utility model based on the specific circumstances.

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] Example

[0027] Reference Figure 1-4A rear-mounted permanent magnet synchronous motor core includes an outer core ring 1 and an inner core ring 2. The outer core ring 1 and inner core ring 2 are each provided with a plurality of rings. The plurality of outer core ring 1 rings are individually stacked and fixed together to form an outer core, with insulation treatment between adjacent outer core ring 1 rings. The plurality of inner core ring 2 rings are individually stacked and fixed together to form an inner core, with insulation treatment between connected inner core ring 2 rings. The outer core composed of the outer core rings 1 is coaxially sleeved outside the inner core composed of the inner core rings 2, forming a stator core. The outer core rings 1 and the corresponding inner core rings 2 are engaged to allow for disassembly and assembly of the outer core composed of the outer core rings 1 and the inner core composed of the inner core rings 2 during winding or winding replacement.

[0028] In this embodiment, a plurality of open winding slots 9 are uniformly opened through the outer peripheral surface of the inner iron core ring 2. The opening of the winding slots 9 faces one side of the outer iron core ring 1 so that the opening of the winding slots 9 can be exposed after the outer iron core ring 1 is removed, without obstructing the winding slots 9, thereby facilitating the winding or disassembling of the winding. A protrusion for winding is formed between every two adjacent winding slots 9. The winding slots 9 and protrusions on every two adjacent inner iron core rings 2 are superimposed and correspond to each other.

[0029] In this embodiment, a number of slots 6 are evenly provided on the inner circumferential surface of the outer iron core ring 1, such as T-shaped slots, C-shaped slots, and T-shaped slots. The slots 6 on each two adjacent outer iron core ring 1 are superimposed and correspond to each other.

[0030] In this embodiment, each protrusion of the inner core ring 2 is provided with an integrated locking block 8 at one end facing the outer core ring 1, such as a T-shaped locking block, a C-shaped locking block, or a T-shaped locking block. The volume of the locking block 8 is smaller than the volume of the protrusion to avoid the locking block 8 blocking the opening of the winding slot 9.

[0031] In this embodiment, the card block 8 is locked in the corresponding card slot 6 so that the outer iron core ring 1 and the inner iron core ring 2 can be disassembled and assembled, while ensuring the stability of the outer iron core ring 1 and the inner iron core ring 2 after connection and preventing them from rotating.

[0032] In this embodiment, a number of external riveting holes 5 are uniformly opened through the surface of each outer iron core ring 1. The external riveting holes 5 on each two adjacent outer iron core ring 1 are superimposed and correspond to each other. External riveting posts 3 are fixedly installed in the external riveting holes 5 between the outer iron core ring 1 to ensure the stability of each outer iron core ring 1 after being superimposed.

[0033] In this embodiment, several ventilation slots 7 are evenly provided on the outer circumferential surface of each outer iron core ring 1 to facilitate good heat dissipation during operation and reduce the overall weight. The ventilation slots 7 on each pair of adjacent outer iron core ring 1 are superimposed and overlapped.

[0034] In this embodiment, each inner core ring plate 2 has an open ventilation slot 10 through its protrusion to facilitate good heat dissipation during operation and reduce overall weight. The opening of the ventilation slot 10 faces the center of the inner core ring plate 2, and the ventilation slots 10 on each two adjacent inner core ring plates 2 are superimposed and correspond to each other.

[0035] In this embodiment, each inner core ring 2 has several internal riveting holes 11 through it. The internal riveting holes 11 on each two adjacent inner core ring 2 are superimposed and correspond to each other. An internal riveting post 4 is fixedly installed in the internal riveting holes 11 between the inner core ring 2 to ensure the stability of each inner core ring 2 after being superimposed.

[0036] In this embodiment, each inner core ring 2 has several ventilation holes 12 through it to facilitate good heat dissipation during operation and reduce the overall weight. The ventilation holes 12 are alternately arranged with the inner riveting holes 11 and the ventilation grooves 10.

[0037] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution described in this utility model, falls within the protection scope of this utility model.

Claims

1. A rear-mounted permanent magnet synchronous motor core, characterized in that: It includes an outer core ring (1) and an inner core ring (2), wherein: the outer core ring (1) and the inner core ring (2) are respectively provided with a number of pieces, the number of outer core rings (1) are individually stacked and fixed together to form an outer core, the number of inner core rings (2) are individually stacked and fixed together to form an inner core, the outer core composed of the outer core rings (1) is coaxially sleeved on the outside of the inner core composed of the inner core rings (2) and forms a stator core, the outer core rings (1) and the corresponding inner core rings (2) are snapped together; The outer circumferential surface of the inner core ring (2) is uniformly provided with a number of open winding slots (9). The opening of the winding slots (9) faces one side of the outer core ring (1). A protrusion for winding is formed between every two adjacent winding slots (9). The winding slots (9) and protrusions on every two adjacent inner core rings (2) are superimposed and correspond to each other. The inner circumferential surface of the outer iron core ring (1) is evenly provided with a number of slots (6), and the slots (6) on each two adjacent outer iron core rings (1) are superimposed and correspond to each other. Each of the protrusions of the inner core ring (2) is provided with an integral locking block (8) at one end facing the outer core ring (1), and the volume of the locking block (8) is smaller than the volume of the protrusion; The card block (8) is engaged in the corresponding card slot (6).

2. The rear-mounted permanent magnet synchronous motor core as described in claim 1, characterized in that: Each of the outer core rings (1) has a number of external riveting holes (5) evenly distributed throughout its surface. The external riveting holes (5) on each pair of adjacent outer core rings (1) are superimposed and correspond to each other. An external riveting post (3) is fixedly installed in the external riveting holes (5) between the outer core rings (1).

3. The core of a rear-mounted permanent magnet synchronous motor as described in claim 2, characterized in that: Each of the outer core rings (1) has a number of external ventilation slots (7) evenly distributed on its outer circumferential surface. The external ventilation slots (7) on each of the two adjacent outer core rings (1) are superimposed and correspond to each other.

4. The core of a rear-mounted permanent magnet synchronous motor as described in claim 1, characterized in that: Each of the inner core ring plates (2) has an open ventilation slot (10) through its protrusion. The opening of the ventilation slot (10) faces the center of the inner core ring plate (2). The ventilation slots (10) on each of the two adjacent inner core ring plates (2) are superimposed and correspond to each other.

5. The rear-mounted permanent magnet synchronous motor core as described in claim 4, characterized in that: Each inner core ring (2) has several internal riveting holes (11) through it. The internal riveting holes (11) on each two adjacent inner core rings (2) are superimposed and correspond to each other. An internal riveting post (4) is fixedly installed in the internal riveting holes (11) between the inner core rings (2).

6. The core of a rear-mounted permanent magnet synchronous motor as described in claim 5, characterized in that: Each inner core ring (2) has several ventilation holes (12) through its surface, and the ventilation holes (12) are alternately arranged with the inner riveting holes (11) and the ventilation grooves (10).

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