A segmented plug-in stator core structure for a robot motor

Abstract

The utility model relates to a kind of for robot motor's block plug-in type stator core structure, including core tooth part assembly and core yoke ring, the both ends of core tooth part assembly are fixed with fixed compression ring, core tooth part assembly is multiple sections, fixed compression ring is also clamped between each section core tooth part assembly, core tooth part assembly includes multiple single-tooth independent core blocks being equidistantly arranged along circumference, single-tooth independent core block is T-shaped as a whole, large end faces outward, small end faces inward, and the end portion close to the center of circle is also equipped with dovetail-shaped positioning lug A, the outer wall of core yoke ring is equipped with multiple slots extending along the axial direction, the cross section of slot is dovetail-shaped, single-tooth independent core block is inserted and fixed by the cooperation of positioning lug A and slot.The utility model can be quickly inserted by the tooth block of swallow, fixed firm, and substantially reduce assembly man-hours.The compression ring of the utility model integrates discrete tooth block into high-integrity module, resist the axial deformation caused by electromagnetic torque, improve axial rigidity.

Description

Technical Field

[0001] This utility model belongs to the field of motor stator structure technology, and particularly relates to a segmented plug-in stator core structure for robot motors. Background Technology

[0002] In the field of motor manufacturing, stator cores typically employ either integral laminated or segmented welded structures. Traditional integral cores require high-precision die-stamping of silicon steel sheets and subsequent stacking. If a section of the teeth is damaged, the entire core must be replaced, resulting in high maintenance costs. To address these issues, the industry has experimented with segmented core designs, such as separating the teeth and yoke into independent modules. However, existing solutions still suffer from significant bottlenecks: 1. Low connection reliability: The teeth and yoke are often connected by bolts, which are prone to loosening under high-frequency electromagnetic vibrations in the motor, leading to increased contact resistance and accelerated temperature rise. 2. Insufficient positioning accuracy: The circumferential positioning of segmented cores relies on manual adjustment, and accumulated errors can easily cause tooth misalignment, reducing motor efficiency. 3. High structural redundancy: Some designs require additional adhesive layers to improve overall integrity, which increases material costs and process complexity. Utility Model Content

[0003] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a segmented plug-in stator core structure for robot motors, which is convenient for winding and has a solid and stable structure.

[0004] To achieve the above-mentioned objectives, this utility model adopts the following technical solution: A modular, pluggable stator core structure for a robot motor includes a core tooth assembly and a core yoke ring. The core tooth assembly has fixed pressure rings at both ends. The core tooth assembly is multi-segmented, with fixed pressure rings sandwiched between each segment. Each core tooth assembly includes multiple circumferentially spaced, independent single-tooth core blocks. Each independent single-tooth core block is T-shaped, with the larger end facing outwards and the smaller end facing inwards. A dovetail-shaped positioning protrusion A is provided at the end near the center. The outer wall of the core yoke ring has multiple axially extending slots, each slot having a dovetail-shaped cross-section. The independent single-tooth core blocks are fixed by the insertion and connection of the positioning protrusion A with the slot.

[0005] As a preferred embodiment, the fixing ring includes an outer connecting ring and a radial extension portion. The outer connecting ring connects multiple radial extension portions into a whole piece, and the radial extension portions cover the single-tooth independent iron core block.

[0006] As a preferred embodiment, the inner end of the radial extension is further provided with a dovetail-shaped protrusion B, which is also inserted and fixed into the groove of the iron core yoke ring.

[0007] As a preferred embodiment, the connection between the radial extension and the outer connecting ring is V-shaped.

[0008] As a preferred embodiment, the iron core is further provided with an insulating coating layer, the thickness of which is 0.1~0.2mm.

[0009] As a preferred embodiment, the insulating coating layer includes an end face coating layer coated at both ends of the iron core, and an inter-tooth groove coating layer coated in the winding groove formed by the iron core yoke ring and the iron core tooth assembly.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model innovatively divides the iron core tooth section into multiple independent T-shaped single-tooth iron core blocks. Each tooth block has a dovetail tenon-shaped positioning protrusion A designed at its small end. This, combined with the axial dovetail tenon slot opened on the outer wall of the iron core yoke, enables precise radial insertion between the tooth block and the yoke. Through the self-locking characteristic of the dovetail tenon, the tooth block can be quickly inserted and fixed without bolts or welding, greatly reducing assembly time.

[0011] This utility model also sets fixing pressure rings at both ends of the tooth assembly and at the segment joints to form a multi-segment constraint frame. The pressure rings integrate discrete tooth blocks into a highly integral module, resisting axial deformation caused by electromagnetic torque and improving axial rigidity. Moreover, when a single tooth segment is damaged, the faulty tooth block can be replaced simply by removing the corresponding pressure ring, which improves the convenience of maintenance. Attached Figure Description

[0012] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute a limitation thereof.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an exploded structural diagram of the present invention; Figure 3 This is a schematic diagram of the assembly structure of the iron core yoke ring and the single-tooth independent iron core block of this utility model. Figure 4 This is a schematic diagram of the disassembled structure of the single-tooth independent iron core block, the coating layer inside the inter-tooth groove, and the iron core yoke ring of this utility model. Figure 5 This is a schematic diagram of the structure of the fixing pressure ring of this utility model.

[0014] The reference numerals in the accompanying drawings are as follows: 1. Single-tooth independent iron core block; 11. Positioning protrusion A; 2. Iron core yoke ring; 21. Notch; 3. Fixing pressure ring; 31. Connecting ring; 32. Radial extension; 33. Positioning protrusion B; 4. End face coating layer; 5. Coating layer inside the tooth groove. Detailed Implementation

[0015] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0016] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0017] Furthermore, in the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and 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 this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0019] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments: like Figures 1 to 5 The diagram illustrates a modular, pluggable stator core structure for a robot motor, comprising a core tooth assembly and a core yoke ring 2. The core tooth assembly has fixing rings 3 at both ends. The core tooth assembly is multi-segmented, with fixing rings 3 sandwiched between each segment. The core tooth assembly includes multiple circumferentially spaced, independent single-tooth core blocks 1. These independent single-tooth core blocks 1 can be miniaturized through stamping, reducing mold costs. Each independent single-tooth core block 1 is T-shaped, with the larger end facing outwards and the smaller end facing inwards. A dovetail-shaped positioning protrusion A11 is provided at the end near the center. The outer wall of the core yoke ring 2 has multiple axially extending slots 21 spaced apart. The slots 21 have a dovetail-shaped cross-section. The independent single-tooth core blocks 1 are fixed by the insertion and engagement of the positioning protrusions A11 with the slots 21.

[0022] This invention innovatively divides the iron core tooth section into multiple independent T-shaped single-tooth iron core blocks. Each tooth block has a dovetail-shaped positioning protrusion A at its small end, which, together with the axial dovetail groove on the outer wall of the iron core yoke ring, achieves precise radial insertion between the tooth block and the yoke. Through the self-locking property of the dovetail, the tooth blocks can be quickly inserted and fixed without bolts or welding, greatly reducing assembly time. At the same time, the dovetail inclined meshing structure produces a tightening effect under electromagnetic vibration, completely solving the problem of loose connection.

[0023] The fixed pressure ring 3 includes an outer connecting ring 31 and radial extensions 32. The outer connecting ring 31 connects multiple radial extensions 32 into a single piece, and the connection between the radial extensions 32 and the outer connecting ring 31 forms a V-shape. The radial extensions 32 cover the single-tooth independent iron core block 1. Covering the tooth block with the radial extensions can suppress magnetic leakage at the tooth tip, reduce edge magnetic flux loss, and improve the uniformity of air gap magnetic flux density. Furthermore, the structure of fixing the end pressure ring solves the circumferential displacement problem of the split tooth block, ensuring tooth pitch accuracy.

[0024] The inner end of the radial extension 32 is also provided with a dovetail-shaped protrusion B33, which is also inserted and fixed to the groove 21 of the iron core yoke ring 2.

[0025] The iron core is further provided with an insulating coating layer, the thickness of which is 0.1~0.2mm. The insulating coating layer includes end face coatings 4 applied to both ends of the iron core, and inter-tooth groove coatings 5 ​​applied within the winding slots formed by the iron core yoke ring 2 and the iron core tooth assembly. In the above structure, the end face coatings prevent discharge between the coil and the iron core end face, and the inter-tooth groove coatings prevent creepage between adjacent teeth.

[0026] This utility model, through a triple innovative design of "single-tooth independent modularization + dovetail radial insertion + segmented pressure ring constraint", has for the first time achieved a unity of high precision, high reliability and low-cost maintenance in the field of stator cores. It solves the long-standing technical contradiction between positioning accuracy and connection strength in segmented structures, and provides a disruptive solution for motor and high-end equipment manufacturing.

[0027] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0028] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention without departing from the principles and spirit of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A modular plug-in stator core structure for robot motors, characterized in that: The core tooth assembly includes a core tooth assembly and a core yoke ring (2). The core tooth assembly has fixed pressure rings (3) at both ends. The core tooth assembly is multi-segmented, and fixed pressure rings (3) are also sandwiched between each segment of the core tooth assembly. The core tooth assembly includes multiple single-tooth independent core blocks (1) that are equidistantly spaced along the circumference. The single-tooth independent core block (1) is T-shaped as a whole, with the large end facing outward and the small end facing inward. The end near the center is also provided with a dovetail-shaped positioning protrusion A (11). The outer wall of the core yoke ring (2) is provided with multiple slots (21) that extend along the axial direction. The cross section of the slot (21) is dovetail-shaped. The single-tooth independent core block (1) is fixed by the positioning protrusion A (11) and the slot (21) through the engagement and insertion.

2. The segmented plug-in stator core structure for a robot motor according to claim 1, characterized in that, The fixed pressure ring (3) includes an outer connecting ring (31) and a radial extension (32). The outer connecting ring (31) connects multiple radial extensions (32) into a whole piece, and the radial extensions (32) cover the single tooth independent iron core block (1).

3. A segmented plug-in stator core structure for a robot motor according to claim 2, characterized in that, The inner end of the radial extension (32) is also provided with a dovetail tenon-shaped protrusion B (33), which is also inserted and fixed to the slot (21) of the iron core yoke ring (2).

4. A segmented plug-in stator core structure for a robot motor according to claim 2, characterized in that, The connection between the radial extension (32) and the outer connecting ring (31) is V-shaped.

5. A modular plug-in stator core structure for a robot motor according to claim 1, characterized in that, The iron core is also provided with an insulating coating layer, the thickness of which is 0.1~0.2mm.

6. A segmented plug-in stator core structure for a robot motor according to claim 5, characterized in that, The insulating coating includes an end face coating (4) applied to both ends of the iron core, and an inter-tooth groove coating (5) applied to the winding groove formed by the iron core yoke ring (2) and the iron core tooth assembly.

Images