A low-loss stator core with stepped teeth

Abstract

The utility model provides a kind of low-loss stator core with stepped tooth part, it is related to the technical field of core instrument, including outer clamping block, inner ring, soft ring, bottom connecting disc, stepped tooth, clamping plate, fastening screw, coil, connecting rod, inner embedded nut;The outer ring of inner ring is equipped with T-shaped clamping groove, the one side of outer clamping block is equipped with T-shaped clamping block, and the one side of outer clamping block is connected in the T-shaped clamping groove of outer ring of inner ring by T-shaped clamping block clamping, the bottom of inner ring is equipped with five groups of threaded round holes, the bottom of bottom connecting disc is equipped with five groups of round holes, and the round hole in the bottom of bottom connecting disc is tightly connected with fastening screw, the threaded hole in the bottom of inner ring is tightly connected in the round hole in the bottom of bottom connecting disc by fastening screw, stepped tooth and annular groove optimize magnetic flux, reduce loss, soft ring suppresses leakage magnetic enhancement stability, and the design of multiple components clamping and special screw improves assembly and maintenance convenience, adapts to the demand of efficient motor.

Description

Technical Field

[0001] This utility model belongs to the field of iron core instrument technology, and more specifically, it relates to a low-loss stator iron core with stepped teeth. Background Technology

[0002] In the motor operating system, the stator core is the core component constituting the magnetic circuit, and its performance directly affects the motor's energy efficiency and stable operation. Currently, the motor industry's demand for high efficiency and low energy consumption continues to rise, especially in fields such as new energy vehicle drives and industrial frequency conversion, which place higher demands on the magnetic properties and loss control of the stator core. Traditional stator core design revolves around magnetic circuit conduction efficiency, improving performance by selecting high-permeability silicon steel sheets and optimizing lamination processes, but structurally, it mostly adopts conventional configurations. As motors develop towards higher speeds and higher power densities, the distribution characteristics of alternating magnetic flux within the core have an increasingly significant impact on losses. How to further optimize the magnetic circuit path and improve energy conversion efficiency through structural innovation has become an important direction for exploration in the industry. Against this backdrop, morphological optimization of key parts of the stator core has become an effective breakthrough for achieving low-loss design, providing a new technical path for the development of high-efficiency motors.

[0003] Based on the above, the stator core, as the core of the motor's magnetic circuit, directly affects energy efficiency and heat generation due to its losses. Traditional stator core teeth often have a uniform cross-section structure. When alternating magnetic flux passes through, edge effects and skin effects easily lead to uneven magnetic flux density in the teeth, especially with a large difference between the root and the tip, increasing additional losses. Furthermore, when assembling windings with uniform cross-section teeth, the gap is difficult to control; excessive gaps can easily cause leakage flux losses, reducing efficiency. Therefore, it is necessary to optimize the tooth structure to improve magnetic flux distribution, reduce leakage flux, and achieve a low-loss design. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a low-loss stator core with stepped teeth to solve the problems of uneven magnetic flux density, high leakage magnetic loss, and low efficiency in existing stator cores.

[0005] This utility model discloses a low-loss stator core with stepped teeth, achieved through the following specific technical means: A low-loss stator core with stepped teeth includes an outer clamping block, an inner ring, a flexible ring, a bottom connecting plate, stepped teeth, a clamping plate, fastening screws, a coil, a connecting rod, and an embedded nut. The outer ring of the inner ring has a T-shaped clamping groove, and one side of the outer clamping block has a T-shaped clamping block, which clamps the outer clamping block into the T-shaped clamping groove of the outer ring of the inner ring. The bottom of the inner ring has five sets of threaded circular holes, and the bottom of the bottom connecting plate has five sets of circular holes. A fastening screw is fastened to the circular hole at the bottom of the connecting plate, and the threaded hole at the bottom of the inner ring is fastened to the circular hole at the bottom of the bottom connecting plate by the fastening screw; a set of square locking blocks are provided at the bottom of the outer locking block, and a square locking groove is provided on the outer ring of the locking plate, and the bottom of the outer locking block is locked to the square locking groove on the outer ring of the locking plate by the square locking blocks; a set of pentagonal locking grooves are provided in the middle of the stepped teeth, and a connecting rod is locked to the pentagonal locking groove in the middle of the stepped teeth.

[0006] Furthermore, a pentagonal hole is provided on one side of the bottom connecting plate, and a circular connecting hole is provided on one side of the clamping plate. The threaded shaft at the bottom of the connecting rod passes through the circular connecting hole on one side of the clamping plate and is fastened to one side of the bottom connecting plate by an embedded nut. The embedded nut is fastened to the pentagonal hole on one side of the bottom connecting plate.

[0007] Furthermore, the outer locking block and the inner ring are connected by two sets of soft rings on their inner side, and the soft rings are connected around the outside of the stepped teeth.

[0008] Furthermore, the outer side of the stepped tooth is provided with five sets of annular grooves, and a coil is wound and connected in the annular grooves on the outer side of the stepped tooth. Each of the connecting grooves on the inner side of the stepped tooth is provided with a set of circular holes, and one side of the coil is connected in series in the circular hole of the inner groove of the stepped tooth.

[0009] Furthermore, the head of the fastening screw is provided with a pentagonal concave groove.

[0010] Furthermore, the inner ring and the bottom connecting plate are connected through the central circular hole.

[0011] Compared with the prior art, the present invention has the following beneficial effects: 1. This utility model, by setting stepped teeth and an outer annular groove, makes the coil winding more compact, reduces gaps, optimizes magnetic flux distribution, alleviates uneven magnetic density, reduces additional losses, and improves operating efficiency.

[0012] 2. This utility model suppresses magnetic leakage by setting a soft ring around the outside of the stepped teeth. Combined with the clamping structure of each component, it reduces assembly gaps, further reduces magnetic leakage loss, and enhances magnetic circuit stability.

[0013] 3. This utility model facilitates disassembly and maintenance by setting up multiple parts for snap-fit ​​and fastening connection. The design of pentagonal slot screws and other features improves assembly convenience and adapts to the structural reliability requirements of high-efficiency motors. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the main structure of this utility model.

[0015] Figure 2 This is a schematic diagram of the internal structure of the main body of this utility model.

[0016] Figure 3 This is a schematic diagram of the card plate device structure of this utility model.

[0017] Figure 4 This is a cross-sectional structural schematic diagram of the stepped tooth device of this utility model.

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows: 1. Outer clamping block; 2. Inner ring; 3. Soft ring; 4. Bottom connecting plate; 5. Stepped teeth; 6. Clamping plate; 401. Fastening screw; 501. Coil; 502. Connecting rod; 503. Embedded nut. Detailed Implementation

[0019] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model. Example:

[0020] As attached Figure 1 To be continued Figure 4 As shown: This utility model provides a low-loss stator core with stepped teeth, including an outer retaining block 1, an inner ring 2, a flexible ring 3, a bottom connecting plate 4, stepped teeth 5, a retaining plate 6, fastening screws 401, a coil 501, a connecting rod 502, and an embedded nut 503. The outer ring 2 has a T-shaped retaining groove, and the outer retaining block 1 has a T-shaped retaining block on one side, with one side of the outer retaining block 1 being engaged with the T-shaped retaining groove on the outer ring 2 via the T-shaped retaining block. The bottom of the inner ring 2 has five sets of threaded round holes, and the bottom of the bottom connecting plate 4 has five... A set of circular holes are provided, and a fastening screw 401 is fastened to the circular hole at the bottom of the bottom connecting plate 4. The threaded hole at the bottom of the inner ring 2 is fastened to the circular hole at the bottom of the bottom connecting plate 4 by the fastening screw 401. A set of square locking blocks are provided at the bottom of the outer locking block 1. A square locking groove is provided on the outer ring of the locking plate 6. The bottom of the outer locking block 1 is locked to the square locking groove on the outer ring of the locking plate 6 by the square locking blocks. A set of pentagonal locking grooves are provided in the middle of the stepped tooth 5. A connecting rod 502 is locked to the pentagonal locking groove in the middle of the stepped tooth 5.

[0021] The bottom connecting plate 4 has a pentagonal hole on one side, and the clamping plate 6 has a circular connecting hole on one side. The threaded shaft at the bottom of the connecting rod 502 passes through the circular connecting hole on one side of the clamping plate 6 and is fastened to one side of the bottom connecting plate 4 through the embedded nut 503. The embedded nut 503 is fastened to the pentagonal hole on one side of the bottom connecting plate 4. The pentagonal hole and the embedded nut 503 cooperate to prevent the nut from loosening and enhance the connection stability. The circular connecting hole limits the connecting rod 502 to ensure the accurate positioning of the stepped teeth 5 and ensure the stability of the magnetic circuit structure.

[0022] Among them, the outer locking block 1 and the inner ring 2 are connected by two sets of soft rings 3 on the inner side, and the soft rings 3 are connected around the outside of the stepped teeth 5. The soft rings 3 can fill the gap between the outer locking block 1, the inner ring 2 and the stepped teeth 5, reducing the leakage magnetic channel; its surrounding structure can buffer the vibration of the components, avoid the assembly stress from affecting the magnetic circuit, and ensure the stable operation of the iron core.

[0023] The stepped tooth 5 has five sets of annular grooves on its outer side, and a coil 501 is wound and connected in the annular grooves on the outer side of the stepped tooth 5. Each of the grooves on the inner side of the stepped tooth 5 has a set of circular holes, and one side of the coil 501 is connected in series in the circular hole of the inner groove of the stepped tooth 5. The annular grooves provide positioning for the coil 501, ensuring that the winding is neat and tight, and reducing gap leakage magnetic flux. The circular holes realize the series connection of the coil 501 to form a closed loop, which, together with the stepped tooth 5, optimizes the magnetic flux and improves the electromagnetic conversion efficiency.

[0024] Among them, the head of the fastening screw 401 is provided with a pentagonal concave groove. The pentagonal concave groove is compatible with special tools, which can increase the tightening torque and enhance the connection firmness. The unique shape can prevent misoperation and avoid structural damage caused by disassembly without special tools, thus ensuring assembly reliability.

[0025] The inner ring 2 and the bottom connecting plate 4 are connected by a circular hole in the middle. The circular hole facilitates the installation of the motor shaft and ensures coaxiality. At the same time, it provides a channel for internal cables, optimizes the spatial layout, and improves the ease of assembly.

[0026] The specific usage and function of this embodiment are as follows: In this invention, the T-shaped locking block of the outer locking block 1 is inserted into the T-shaped locking groove of the inner ring 2 to achieve initial fixation between the two. Then, a fastening screw 401 is passed through the circular hole of the bottom connecting plate 4 and screwed into the threaded hole at the bottom of the inner ring 2 to complete the fixation. The square locking block at the bottom of the outer locking block 1 is inserted into the square locking groove of the locking plate 6 to enhance overall stability. The stepped tooth 5 is engaged with the connecting rod 502 through the middle pentagonal locking groove. After the threaded shaft at the bottom of the connecting rod 502 passes through the circular hole of the locking plate 6, it is tightened and fixed in the pentagonal hole of the bottom connecting plate 4 with an embedded nut 503. The soft ring 3 is fitted inside the outer locking block 1 and the inner ring 2, surrounding the outside of the stepped tooth 5 to suppress magnetic leakage. The coil 501 is wound around the annular groove on the outside of the stepped tooth 5, with one side connected in series into the circular hole of the inner groove to form a complete circuit. During operation, the stepped teeth 5 optimize magnetic flux distribution, the soft ring 3 reduces magnetic leakage, each mounting structure ensures stability, and the pentagonal slot fastening screw 401 facilitates disassembly and assembly, improving motor efficiency and maintenance convenience.

[0027] Any aspects of this utility model not described in detail are well-known technologies to those skilled in the art.

Claims

1. A low-loss stator core with stepped teeth, characterized by: Includes outer clamping block (1), inner ring (2), soft ring (3), bottom connecting plate (4), stepped teeth (5), clamping plate (6), fastening screw (401), coil (501), connecting rod (502), and embedded nut (503); The inner ring (2) has a T-shaped locking groove on its outer ring. The outer locking block (1) has a T-shaped locking block on one side, and the outer locking block (1) is connected to the T-shaped locking groove of the outer ring of the inner ring (2) by the T-shaped locking block. The bottom of the inner ring (2) has five sets of threaded round holes. The bottom of the bottom connecting plate (4) has five sets of round holes, and the round holes at the bottom of the bottom connecting plate (4) are fastened with fastening screws (401). The threaded holes at the bottom of the inner ring (2) are fastened to the round holes at the bottom of the bottom connecting plate (4) by fastening screws (401). The bottom of the outer card block (1) is provided with a set of square card blocks, and the outer ring of the card plate (6) is provided with a square card slot. The bottom of the outer card block (1) is connected to the square card slot on the outer ring of the card plate (6) by the square card blocks. The middle of the stepped tooth (5) is provided with a set of pentagonal card slots, and a connecting rod (502) is connected in the pentagonal card slot in the middle of the stepped tooth (5).

2. A low-loss stator core with stepped teeth as defined in claim 1, characterized in that: The bottom connecting plate (4) has a pentagonal hole on one side, and the card plate (6) has a circular connecting hole on one side. The threaded shaft at the bottom of the connecting rod (502) passes through the circular connecting hole on one side of the card plate (6) and is fastened to the bottom connecting plate (4) by an embedded nut (503). The embedded nut (503) is fastened in the pentagonal hole on one side of the bottom connecting plate (4).

3. A low-loss stator core with stepped teeth as described in claim 1, characterized in that: The outer locking block (1) and the inner ring (2) are connected by two sets of soft rings (3) on the inner side, and the soft rings (3) are connected around the outside of the stepped teeth (5).

4. A low loss stator core with stepped teeth as defined in claim 1, characterized in that: The outer side of the stepped tooth (5) is provided with five sets of annular grooves, and a coil (501) is wound and connected in the annular groove on the outer side of the stepped tooth (5). Each of the grooves on the inner side of the stepped tooth (5) is provided with a set of circular holes, and one side of the coil (501) is connected in series in the circular hole of the groove on the inner side of the stepped tooth (5).

5. A low-loss stator core with stepped teeth as described in claim 1, characterized in that: The head of the fastening screw (401) is provided with a pentagonal concave groove.

6. A low loss stator core with stepped teeth as defined in claim 1, characterized in that: The inner ring (2) and the bottom connecting plate (4) are connected by a circular hole in the middle.

Images