A spliced stator core structure

Abstract

This utility model discloses a spliced ​​stator core structure, including: a stator structure, the stator structure including fan-shaped laminations; a fixing groove is formed on the outer wall of the top of the fan-shaped laminations, a rivet point is formed on the outer wall of the fan-shaped laminations, and a locking block is fixedly connected to the outer wall of the fan-shaped laminations on the side away from the rivet point. This utility model relates to the field of stator core technology. This stator structure, by splitting the traditional full-circular iron core into fan-shaped laminations, and through reasonable process arrangement and stamping die design, can optimize the material layout according to the specifications of silicon steel sheets, greatly reduce the generation of edge waste, and effectively reduce the material loss rate. At the same time, the mold structure of the split fan-shaped laminations is relatively simple, reducing the mold development and maintenance costs. Through the tenon-and-mortise ring splicing of the slot and the plug, precise positioning is achieved in the circumferential direction. The lateral engagement of the rivet point and the locking block ensures the stability of the axial length of the iron core.

Description

Technical Field

[0001] This utility model relates to the field of stator core technology, specifically a spliced ​​stator core structure. Background Technology

[0002] In the field of motor manufacturing, the stator core is a key component of the motor, and its structure and performance directly affect the motor's operating efficiency, stability, and service life.

[0003] Traditional stator cores typically employ a fully circular structure, using a stamping process to form a complete circular core from a single piece of silicon steel sheet. However, this fully circular core structure has many drawbacks. During the stamping process, due to its large overall size, the uneven distribution of internal stress in the material easily leads to problems such as roundness distortion and flatness deviation. Furthermore, the stamping method for fully circular cores results in low utilization of silicon steel sheets, generating a large amount of scrap material during the cutting and stamping process, which increases material costs. Utility Model Content

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this utility model provides a spliced ​​stator core structure, which solves the problems of traditional stator cores, which are prone to roundness distortion due to their large overall size and uneven internal stress distribution, as well as the generation of a large amount of scrap material during the cutting and stamping process.

[0005] (II) Technical Solution To achieve the above objectives, this utility model provides the following technical solution: A spliced ​​stator core structure includes: a stator structure, the stator structure including sector-shaped laminations; a fixing groove is formed on the outer wall of the top of the sector-shaped laminations, a rivet point is formed on the outer wall of the sector-shaped laminations, a locking block is fixedly connected to the outer wall of the sector-shaped laminations on the side away from the rivet point, a slot is formed on the outer wall of the side of the sector-shaped laminations, an insert block is fixedly connected to the outer wall of the sector-shaped laminations on the side away from the slot, and positioning grooves are symmetrically formed on the outer wall of the bottom of the sector-shaped laminations.

[0006] Preferably, the inner wall of the slot is slidably connected to the outer wall of the insert, and the fan-shaped punches are arranged in a circular array along the circumference, with the slots of all the fan-shaped punches and the inserts sequentially docking to form a complete circumferential outline.

[0007] Preferably, the inner wall of the rivet point is slidably connected to the outer wall of the clip, and multiple fan-shaped punches are arranged and spliced ​​horizontally. The rivet point on the outer wall of the fan-shaped punch is slidably connected to the clip of the adjacent fan-shaped punch. The horizontal arrangement of multiple fan-shaped punches and the horizontal splicing can expand the axial length of the iron core, i.e., the thickness of the iron core.

[0008] Preferably, the rivet points are arranged along the outer array of the fan-shaped punches, and the position of the locking block corresponds to the position of the rivet points, ensuring that the horizontally arranged fan-shaped punches fit tightly together and avoiding displacement due to vibration during operation.

[0009] Preferably, the inner wall of the fixing groove is slidably connected to a fixing frame, which is connected to the upper and lower toothed pressure plates by tension bolts to press all the fan-shaped punches into a whole. The inner wall of the positioning groove is slidably connected to a positioning rib, which is fixed to the machine base ring plate by a support plate to ensure the axial position accuracy of the fan-shaped punches during stacking.

[0010] (III) Beneficial Effects This utility model provides a spliced ​​stator core structure. It has the following beneficial effects: (i) The stator structure, by splitting the traditional full-circle iron core into sector-shaped laminations, and through reasonable process arrangement and stamping die design, can optimize the material layout according to the specifications of silicon steel sheets, greatly reduce the generation of edge waste, and effectively reduce the material loss rate. At the same time, the mold structure of the split sector-shaped laminations is relatively simple, reducing the mold development and maintenance costs and shortening the production cycle.

[0011] (ii) The fan-shaped lamination achieves precise positioning in the circumferential direction through the mortise and tenon joint of the slot and the insert. At the same time, the elastic connection design effectively releases the assembly stress and avoids the deformation of the iron core. The lateral engagement of the rivet point and the clamping block ensures the stability of the axial length of the iron core and prevents displacement caused by running vibration. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the fan-shaped punch of this utility model; Figure 3 This is a schematic diagram of the structure of the card block of this utility model; Figure 4 This is a schematic diagram of the structure of the insert block of this utility model.

[0013] In the diagram: 1. Stator structure; 11. Sector lamination; 12. Fixing groove; 13. Riveting point; 14. Locking block; 15. Slot; 16. Insertion block; 17. Positioning groove. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figure 1-4 This utility model provides a technical solution: a spliced ​​stator core structure, including: a stator structure 1, the stator structure 1 including a fan-shaped lamination 11; a fixing groove 12 is provided on the outer wall of the top of the fan-shaped lamination 11, a rivet point 13 is provided on the outer wall of the fan-shaped lamination 11, a locking block 14 is fixedly connected to the outer wall of the fan-shaped lamination 11 on the side away from the rivet point 13, a slot 15 is provided on the outer wall of the side of the fan-shaped lamination 11, an insert block 16 is fixedly connected to the outer wall of the fan-shaped lamination 11 on the side away from the slot 15, and positioning grooves 17 are symmetrically provided on the outer wall of the bottom of the fan-shaped lamination 11.

[0016] The inner wall of the slot 15 is slidably connected to the outer wall of the insert 16, and the fan-shaped pieces 11 are arranged in a circular array along the circumference. The slots 15 of all the fan-shaped pieces 11 are connected to the insert 16 in sequence to form a complete circumferential outline.

[0017] The inner wall of the rivet point 13 is slidably connected to the outer wall of the locking block 14, and there are multiple fan-shaped punches 11 arranged horizontally. The rivet point 13 on the outer wall of the fan-shaped punch 11 is slidably connected to the locking block 14 of the adjacent fan-shaped punches 11. Multiple fan-shaped punches 11 are arranged horizontally, and the horizontal splicing can expand the axial length of the iron core, i.e. the thickness of the iron core.

[0018] The rivet points 13 are arranged along the outer array of the fan-shaped punches 11, and the position of the locking block 14 corresponds to the position of the rivet points 13, ensuring that the horizontally arranged fan-shaped punches 11 fit tightly together and avoid displacement due to vibration during operation.

[0019] The inner wall of the fixing groove 12 is slidably connected to a fixing frame, which is connected to the upper and lower tooth pressure plates by a tension bolt to press all the fan-shaped punches 11 into a whole. The inner wall of the positioning groove 17 is slidably connected to a positioning rib, which is fixed to the machine base ring plate by a support plate to ensure the axial position accuracy of the fan-shaped punches 11 during stacking.

[0020] In use, the slots 15 on the side of the fan-shaped punch 11 are slidably connected to the inserts 16 of the adjacent fan-shaped punch 11 to form a tenon-and-mortise engagement. Through the arrangement of the ring array, the slots 15 and inserts 16 of all the fan-shaped punches 11 are connected in sequence to form a complete circumferential outline. This design can ensure the positioning of the fan-shaped punch 11 in the circumferential direction, while allowing a certain amount of elastic deformation to release the stress during the assembly process and avoid core deformation caused by hard extrusion. The rivet point 13 on the outer wall of the fan-shaped punch 11 is slidably connected to the locking block 14 of the adjacent fan-shaped punch 11. Multiple fan-shaped punches 11 are arranged horizontally. The horizontal splicing can expand the axial length of the iron core, i.e. the thickness of the iron core. Through the engagement of the rivet point 13 and the locking block 14, the horizontally arranged fan-shaped punches 11 are ensured to fit tightly, avoiding displacement due to vibration during operation. The positioning groove 17 at the bottom of the sector-shaped punch 11 is slidably connected to the positioning rib. The positioning rib is fixed to the machine base ring plate by the support plate to ensure the axial position accuracy of the sector-shaped punch 11 during stacking and avoid deviation between the inner diameter of the iron core and the groove size. The fixing groove 12 at the top of the sector-shaped punch 11 is embedded in the fixing frame. The fixing frame is connected to the upper and lower tooth pressure plates by the tension bolts to press all the sector-shaped punches 11 into a whole and prevent the iron core from loosening due to electromagnetic vibration during operation. After the fan-shaped stamping piece 11 is disassembled as required, a reasonable arrangement of steps is designed, and a stamping die is developed as required. After the die is completed, a qualified fan-shaped stamping piece 11 is stamped out. After the fan-shaped stamping piece 11 is completed, it is spliced ​​into a whole circle using a special tooling fixture. This method can effectively reduce the material loss rate and improve product stability.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only 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 a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. 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.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A split stator core structure characterized by, include: Stator structure (1), the stator structure (1) includes sector laminations (11); The top outer wall of the fan-shaped punch (11) is provided with a fixing groove (12), the outer wall of the fan-shaped punch (11) is provided with a rivet point (13), the outer wall of the fan-shaped punch (11) away from the rivet point (13) is fixedly connected with a locking block (14), the outer wall of the side of the fan-shaped punch (11) is provided with a slot (15), the outer wall of the fan-shaped punch (11) away from the slot (15) is fixedly connected with an insert block (16), and the outer wall of the bottom of the fan-shaped punch (11) is symmetrically provided with positioning grooves (17).

2. A segmented stator core structure according to claim 1, characterized in that: The inner wall of the slot (15) is slidably connected to the outer wall of the insert (16), and the fan-shaped punches (11) are arranged in a circular array along the circumference.

3. The segmented stator core structure of claim 1, wherein: The inner wall of the rivet point (13) is slidably connected to the outer wall of the card block (14), and multiple fan-shaped punches (11) are arranged horizontally.

4. The spliced ​​stator core structure according to claim 1, characterized in that: The rivet points (13) are arranged in an array along the outer edge of the fan-shaped punch (11), and the position of the locking block (14) corresponds to the position of the rivet points (13).

5. The segmented stator core structure of claim 1, wherein: The inner wall of the fixing groove (12) is slidably connected to a fixing frame, and the inner wall of the positioning groove (17) is slidably connected to a positioning rib.

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