Split stator core and motor

Abstract

The utility model discloses a kind of split stator core and motor, which include motor and stator, the stator is arranged in motor inside, the stator includes core inner ring and core outer ring, the core inner ring and core outer ring are annular, the core inner ring is arranged in the inside of core outer ring, the outside of the core inner ring is provided with inner ring tooth section along the equidistance of circumference, winding slot is formed between adjacent two the inner ring tooth section, the inside of the core outer ring is provided with the protruding portion corresponding with the number and position of inner ring tooth section along the equidistance of circumference, the protruding portion is interference fit with corresponding inner ring tooth section, inner ring tooth section cross section is rectangle, protruding portion cross section is trapezoidal, clamp positioning groove is formed between adjacent two the protruding portion, and the device solves the problem caused by the structure of current core.

Description

Technical Field

[0001] This utility model belongs to the field of motor technology, specifically relating to a split stator core and a motor. Background Technology

[0002] The stator core is the core component of an electric motor, and its manufacturing process and performance directly affect the motor's efficiency, noise, and reliability. For motors used in special applications, using an integral structure for the stator core would result in numerous drawbacks, such as high mold costs and complex manufacturing processes.

[0003] However, existing split-type designs typically divide the stator core into several arc-shaped segments, which are then circumferentially spliced ​​together to form a whole. However, these designs still have the following significant problems: asymmetrical design leads to complex manufacturing and management; the segments in most split-type designs are not entirely identical; connection accuracy and consistency are difficult to guarantee, as the cumulative error during splicing is large due to the different structures of each segment, making it difficult to ensure that all segments can form a high-precision circle after splicing. This phenomenon has become a problem that urgently needs to be solved by those in the field. Utility Model Content

[0004] The purpose of this invention is to provide a split stator core and motor for existing devices, in order to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a split stator core, including an inner ring and an outer ring, both of which are annular. The inner ring is disposed inside the outer ring. The outer side of the inner ring is provided with inner ring tooth segments at equal intervals along the circumference, and a winding slot is formed between two adjacent inner ring tooth segments. The inner side of the outer ring is provided with protrusions along the circumference corresponding to the number and position of the inner ring tooth segments, and the protrusions are interference-fitted with the corresponding inner ring tooth segments.

[0006] The present invention further explains that the cross-section of the inner ring tooth segment is rectangular.

[0007] The present invention further illustrates that the cross-section of the protrusion is trapezoidal.

[0008] The present invention further explains that a clamp positioning groove is formed between two adjacent protrusions.

[0009] This utility model further illustrates that the bottom center of the winding slot is a flat surface, and the two sides are inclined surfaces.

[0010] The present invention further describes that the inner ring of the iron core has a central hole, each inner ring of the iron core is formed by stacking multiple layers of silicon steel sheets, an inner ring pin hole is formed at the center of the inner ring tooth segment, the outer ring of the iron core is formed by stacking multiple layers of silicon steel sheets, an outer ring pin hole is formed at the center of the protrusion of the outer ring of the iron core, and the inner ring pin hole and the outer ring pin hole are on the same radial line.

[0011] An electric motor, comprising a housing and a rotor, and further comprising a split stator core as described above.

[0012] The present invention further describes that a stator is provided outside the rotor, a housing is fixed on the outer ring of the stator, a rear end cover is connected to the left bearing of the rotor, a front end cover is connected to the right bearing of the rotor, and a rotating shaft is provided inside the rotor, the rotating shaft passing through the front end cover.

[0013] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model, by setting a higher inner ring tooth segment, makes the winding method more convenient and the winding density greater; by setting a slotless iron core inner ring, the cogging effect is reduced; by setting a completely symmetrical stator, it has extremely high concentricity and mechanical strength after splicing, and the magnetic lines of force are more evenly distributed; by setting a protrusion that interlocks with the inner ring tooth segment, the magnetic lines of force are more stable; compared with traditional servo motors, while keeping the radial dimension unchanged, the axial dimension is shorter, the torque remains unchanged, and the functional density is higher, making it easier for customers to optimize their internal structure and thus reduce costs. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the motor of this utility model; Figure 2 This is a schematic diagram of the motor explosion of this utility model; Figure 3 This is a schematic diagram of the overall structure of the stator of this utility model; Figure 4 This is a schematic diagram of the stator disassembly of this utility model; Figure 5 This is a utility model Figure 4 Enlarged view of point A in the middle; In the diagram: 1. Motor; 2. Rear end cover; 3. Housing; 4. Front end cover; 5. Rotor; 6. Stator; 601. Inner ring of the core; 6011. Inner ring pin hole; 6012. Inner ring tooth segment; 6013. Winding slot; 602. Outer ring of the core; 6021. Outer ring pin hole; 6023. Protrusion; 7. Plane. Detailed Implementation

[0015] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] Please see Figure 1-5 The present invention provides a technical solution: an electric motor, including a motor 1 and a stator 6, the stator 6 being disposed inside the motor 1, the stator 6 including an inner core ring 601 and an outer core ring 602, both the inner core ring 601 and the outer core ring 602 being annular, the inner core ring 601 being disposed inside the outer core ring 602, the outer side of the inner core ring 601 being provided with inner ring tooth segments 6012 at equal intervals along the circumference, a winding slot 6013 being formed between two adjacent inner ring tooth segments 6012 for accommodating coils, the inner side of the outer core ring 602 being provided with protrusions 6023 along the circumference corresponding to the number and position of the inner ring tooth segments 6012, the protrusions 6023 being interference-fitted with the corresponding inner ring tooth segments 6012; The inner ring tooth segment 6012 has a rectangular cross-section, the protrusion 6023 has a trapezoidal cross-section, and a clamp positioning groove is formed between two adjacent protrusions 6023. The bottom center of the winding groove 6013 is a plane 7, and the two sides are inclined surfaces. The inner ring 601 of the iron core has a central hole. Each inner ring 601 is made of multiple layers of silicon steel sheets. The inner ring tooth segment 6012 has an inner ring pin hole 6011 at the center. The outer ring 602 of the iron core is made of multiple layers of silicon steel sheets. The outer ring pin hole 6021 is located at the center of the protrusion 6023 of the outer ring 602. The inner ring pin hole 6011 and the outer ring pin hole 6021 are on the same radial line. The stator 6 has a rotor 5 inside, and the outer ring of the stator 6 is fixed with a housing 3. The left bearing of the rotor 5 is connected to the rear end cover 2, and the right bearing of the rotor 5 is connected to the front end cover 4. The shaft of the rotor 5 passes through the front end cover 4.

[0017] Working principle: When assembling the above-mentioned motor 1, firstly, the inner ring tooth segments 6012 are assembled into a complete iron core inner ring 601, and the two outer ring segments 6022 are assembled into an iron core outer ring 602. Then, the protrusions 6023 on the iron core inner ring 601 and the iron core outer ring 602 are aligned and pressed together by interference fit to form a stator 6. The stator 6 and the rotor 5 are coaxially installed inside the housing 3. The front end cover 4 and the rear end cover 2 are installed on both sides of the housing 3 to fix the housing 3. Figure 2 As shown, the split stator core of this utility model can be directly used as the stator of a servo motor, or assembled with the inner rotor of a servo motor to become a servo motor.

[0018] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model, 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, and therefore should not be construed as a limitation of this utility model.

[0019] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A split-type stator core, comprising an inner core ring (601) and an outer core ring (602), characterized in that: Both the inner ring (601) and the outer ring (602) of the iron core are annular. The inner ring (601) is located inside the outer ring (602). The outer side of the inner ring (601) is provided with inner ring tooth segments (6012) at equal intervals along the circumference. A winding slot (6013) is formed between two adjacent inner ring tooth segments (6012). The outer ring (602) is provided with protrusions (6023) along the circumference, which correspond to the number and position of the inner ring tooth segments (6012). The protrusions (6023) are interference-fitted with the corresponding inner ring tooth segments (6012).

2. A split stator core according to claim 1, characterized in that: The inner ring tooth segment (6012) has a rectangular cross-section.

3. A split-type stator core according to claim 1, characterized in that: The cross-section of the protrusion (6023) is trapezoidal.

4. A split-type stator core according to claim 1, characterized in that: A clamp positioning groove is formed between two adjacent protrusions (6023).

5. A split-type stator core according to claim 1, characterized in that: The bottom center of the winding slot (6013) is a flat surface (7), and the two sides are inclined surfaces.

6. A split stator core according to any one of claims 1 to 5, characterized in that: The inner ring (601) of the iron core has a central hole. Each inner ring (601) is made of multiple layers of silicon steel sheets. The inner ring tooth segment (6012) has an inner ring pin hole (6011) at its center. The outer ring (602) of the iron core is made of multiple layers of silicon steel sheets. The outer ring (602) has an outer ring pin hole (6021) at its center. The inner ring pin hole (6011) and the outer ring pin hole (6021) are on the same radial line.

7. An electric motor, comprising a housing (3) and a rotor (5), characterized in that: It also includes the split stator core as described in claim 1.

8. The motor according to claim 7, characterized in that: The rotor (5) is provided with a stator (6) on the outside. The outer ring of the stator (6) is fixed with a housing (3). The left bearing of the rotor (5) is connected to a rear end cover (2). The right bearing of the rotor (5) is connected to a front end cover (4). The rotor (5) is provided with a rotating shaft inside. The rotating shaft passes through the front end cover (4).

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