Rotor core structure facilitating glue injection and stator core structure adapted thereto

Abstract

The utility model relates to rotor technical field especially a rotor core structure and with its adaptation stator core structure convenient to glue injection, including rotor core and circular ring structure's magnetic ring, the rotor core is axially adhered and is arranged in the magnetic ring inside through the glue, and the rotor core is formed by the stack of multiple structure same rotor sheet, a plurality of opening arc grooves are opened in the rotor sheet equidistantly, and the circular hole area corresponding with the arc groove is opened on the rotor sheet, and the space in the arc groove is communicated with the space in the circular hole area through the narrow hole area, and in the rotor core, the diameter of the circular hole area on the first rotor sheet to the last rotor sheet gradually reduces. The utility model through the special rotor sheet design is convenient for glue injection and promotes the bonding quality, significantly simplifies the perfusion technology, improves production efficiency, effectively saves the glue amount.

Description

Technical Field

[0001] This utility model relates to the field of rotor technology, and in particular to a rotor core structure that is easy to inject adhesive and a stator core structure adapted thereto. Background Technology

[0002] Traditional rotor structures often suffer from difficulties in gluing the rotor core and magnetic ring axially. The rotor core is usually formed by stacking multiple rotor plates, and its structural design often makes it difficult for the glue to flow evenly into the gaps between the rotor plates and the magnetic ring, as well as the connection points between the rotor plates. This can easily lead to uneven glue distribution, which in turn affects the bonding quality and reliability of the core and magnetic ring. At the same time, the potting process is complex, the production efficiency is low, and the amount of glue used is difficult to control, resulting in waste. Utility Model Content

[0003] The present invention aims to solve the above-mentioned defects and provide a rotor core structure that is easy to inject adhesive and a stator core structure that is compatible with it.

[0004] To overcome the deficiencies in the prior art, the technical solution adopted by this utility model to solve its technical problem is: a rotor core structure that is easy to inject adhesive, including a rotor core and a magnetic ring with a circular structure. The rotor core is axially bonded inside the magnetic ring by adhesive, and the rotor core is formed by stacking multiple rotor plates with the same structure. Multiple arc-shaped grooves are equidistantly opened on the rotor plates, and circular hole areas corresponding to the arc-shaped grooves are opened on the rotor plates. The space inside the arc-shaped grooves and the space inside the circular hole areas are connected through narrow hole areas. In the rotor core, the diameter of the circular hole areas on the first rotor plate to the last rotor plate gradually decreases.

[0005] Further improvements include axially opening an inner ring groove in the inner hole of the magnetic ring to accommodate the rotor core.

[0006] Further improvements include providing an observation groove on the front end face of the magnetic ring.

[0007] Further improvements include that, in the rotor core, the first and second rotor plates each have multiple receiving windows on their surfaces, and starting from the third rotor plate, the surfaces of the rotor plates abruptly change to one side to form abrupt change sections, and the abrupt change sections of the subsequent rotor plates are sequentially embedded into the abrupt change sections of the preceding outer ring, and the abrupt change sections of the third rotor plate are embedded in the receiving windows and remain flush with the surface of the first rotor plate.

[0008] A stator core structure suitable for use with a rotor core structure includes a stator outer ring, which is formed by stacking multiple outer ring plates with the same structure, and an inner ring window is opened in the central region of the outer ring plate; The stator inner ring is formed by stacking multiple inner ring plates with the same structure. Each inner ring plate includes a middle part and at least three extensions connected to the middle part. The extensions are radially distributed around the circumference of the middle part. The middle part has a rotor window with a non-circular structure. The end of the extension is fitted into a positioning groove opened on the inner wall of the inner ring window.

[0009] Further improvements include the stator outer ring having multiple limiting grooves circumferentially, and the stator outer ring being integrally embedded in the mounting hole of the fixing part, wherein the shape of the mounting hole matches the outer circumference of the stator outer ring.

[0010] Further improvements include that, in the stator outer ring, the first and second outer ring plates each have multiple receiving windows on their surfaces, and starting from the third outer ring plate, the surfaces of the outer ring plates abruptly change to one side to form abrupt change portions, and the abrupt change portions of the subsequent outer ring plates are respectively embedded in the abrupt change portions of the preceding outer ring plates, and the abrupt change portions of the third outer ring plate are embedded in the receiving windows and remain flush with the surface of the first outer ring plate.

[0011] Further improvements include that in the stator inner ring, the first inner ring plate and the second inner ring plate each have multiple receiving windows on their surfaces. Starting from the third inner ring plate, the surfaces of the inner ring plates abruptly change to one side to form abrupt change portions. The abrupt change portions of the subsequent inner ring plates are embedded in the abrupt change portions of the preceding outer ring plate. The abrupt change portions of the third inner ring plate are embedded in the receiving windows and remain flush with the surface of the first inner ring plate.

[0012] Further improvements include the provision of multiple ventilation windows circumferentially arranged on the inner ring of the stator.

[0013] The beneficial effects of this utility model are: the special rotor plate design facilitates glue injection and improves bonding quality, and the stator structure achieves stability and optimized electromagnetic conversion efficiency through the stacking and embedding of outer and inner ring plates. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is the front view of the inner ring of the stator; Figure 2 yes Figure 1 Enlarged view of A in the middle; Figure 3 This is a partial cross-sectional view of the abrupt change section on the inner ring of the stator; Figure 4 This is the left view of the inner ring of the stator; Figure 5 This is the front view of the outer ring plate; Figure 6 This is the left view of the outer ring plate; Figure 7 This is the overall assembly drawing of the stator and rotor; Figure 8 This is a front view of the magnetic ring in this utility model; Figure 9 yes Figure 8 A cross-sectional view of HH; Figure 10 yes Figure 9 Enlarged view of B in the middle; Figure 11 This is a front view of the rotor core in this utility model; Figure 12 yes Figure 11 DD section view; Figure 13 yes Figure 11 Enlarged view of C; Figure 14 This is the front view of this utility model; Figure 15 yes Figure 14 EE section view; In the figure, 1-stator outer ring, 2-fixed part, 3-stator inner ring, 4-rotor core, 5-magnetic ring, 6-transition section, 7-accommodating window; 101-Outer ring piece, 1011-Limiting groove, 1012-Inner ring window, 1013-Positioning groove; 201 - Embedded Hole; 301--Inner ring plate, 3011--Intermediate section, 3012--Rotor window, 3013--Extension section, 3014--Ventilation window; 401-Rotor blade, 4011-Arc groove, 4012-Narrow hole area, 4013-Circular hole area; 501 - Observation groove, 502 - Inner ring groove. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the scope of protection of this utility model.

[0017] refer to Figure 1 , Figure 13 and Figure 14A rotor core structure for easy glue injection is disclosed. The rotor is arranged within a rotor window 3012 and includes a rotor core 4 and a circular magnetic ring 5. The rotor core 4 is axially bonded to the inside of the magnetic ring 5 with glue. The rotor core 4 is formed by stacking multiple rotor plates 401 with identical structures. Multiple circumferentially spaced arc-shaped grooves 4011 are formed on each rotor plate 401, and circular hole areas 4013 corresponding to the arc-shaped grooves 4011 are formed on the rotor plate 401. The spaces within the arc-shaped grooves 4011 and the spaces within the circular hole areas 4013 are connected by... The narrow hole area 4012 is connected, and the diameter of the circular hole area 4013 on the first rotor plate 401 to the last rotor plate 401 of the rotor core 4 gradually decreases, thereby forming a frustum structure. In this design, the glue can be directly injected into the circular hole area 4013, which is convenient for injecting the glue. The glue can flow evenly into the arc groove 4011 through the narrow hole area 4012. This design has the following advantages: uniform and controllable glue distribution, greatly improving the bonding quality and reliability of the iron core and the magnetic ring, significantly simplifying the potting process, improving production efficiency, and effectively saving glue consumption.

[0018] For specific embodiments, please refer to Figure 15 The inner ring 5 has an axially formed inner ring groove 502 in the inner hole to accommodate the rotor core 4. This design increases the amount of glue stored in the arc groove 4011 and enables the rotor plate 401 to be positioned and assembled.

[0019] For specific embodiments, please refer to Figure 7 , Figure 8 and Figure 9 An observation groove 501 is provided on the front end face of the magnetic ring 5 to facilitate the distinction between the front and back sides of the magnetic ring 5.

[0020] For specific embodiments, please refer to Figure 12 In the rotor core 4, the first rotor lamination 401 and the second rotor lamination 401 each have multiple receiving windows 7 on their surfaces. Starting from the third rotor lamination 401, the surfaces of the rotor laminations 401 abruptly change to one side to form abrupt change portions 6. The abrupt change portions 6 of the subsequent rotor laminations 401 are sequentially embedded into the abrupt change portions 6 of the previous outer ring. The abrupt change portions 6 of the third rotor lamination 401 are embedded in the receiving windows 7 and remain flush with the surface of the first rotor lamination 401.

[0021] refer to Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7 A stator core structure adapted to a rotor core structure includes a stator outer ring 1, which is formed by stacking multiple outer ring plates 101 with the same structure. The outer ring plate 101 has an inner ring window 1012 in the central region for accommodating the stator and coils. The stator inner ring 3 is formed by stacking multiple inner ring plates 301 with the same structure. The inner ring plate 301 includes a middle part 3011 and at least three extensions 3013 connected to the middle part 3011. The extensions 3013 are radially distributed around the circumference of the middle part 3011. The middle part 3011 has a rotor window 3012 with a non-circular structure. The extensions 3013 can be used for winding coils. The end of the extension 3013 is fitted into the positioning groove 1013 opened on the inner wall of the inner ring window 1012, thereby achieving positioning.

[0022] The core function of the stator outer ring 1 is to provide a stable structural support. The structure, which is composed of multiple identical outer ring pieces 101 stacked together, not only enhances the overall rigidity, but also provides a space for the stator coil through the central inner ring window 1012. At the same time, the positioning groove 1013 in the window can firmly fix the extension 3013 of the stator inner ring 3, ensuring that the components of the iron core do not undergo relative displacement during operation, thus providing a stable basic framework for the entire structure. The design of the inner stator ring 3 directly serves the electromagnetic conversion efficiency: the non-circular rotor window 3012 in the middle part 3011 can be adapted to rotors of specific shapes, adjust the air gap magnetic reluctance distribution, reduce motor vibration and noise, and improve energy conversion efficiency by optimizing the air gap magnetic field waveform, reducing iron loss and eddy current loss. Specifically, the rotor window 3012 is circular with multiple grooves on the inner wall; at least three radially distributed extensions 3013 not only provide winding paths for the stator coils, enabling the coils to be wound in an orderly manner according to a preset trajectory, but also form a closed magnetic circuit through the fitting with the outer stator ring 1, enhancing the magnetic field strength and stability, and improving energy conversion efficiency. Overall, this design, through modular stacking and precise installation, achieves structural stability while optimizing the electromagnetic induction path, providing a core guarantee for the efficient and stable operation of motors and other equipment.

[0023] For specific embodiments, please refer to Figure 7 The stator outer ring 1 has multiple limiting grooves 1011 circumferentially provided, which can form a precise engagement with external components, playing a role in auxiliary positioning and anti-rotation, preventing the stator outer ring 1 from circumferential displacement due to vibration or electromagnetic force during operation, and enhancing the reliability of the structural connection. The stator outer ring 1 is embedded in the recess 201 of the fixing part 2. The shape of the recess 201 matches the outer circumference of the stator outer ring 1. The two are tightly fitted together, which firmly fixes the stator outer ring 1 in the preset position, ensuring installation accuracy and dispersing the stress generated during operation, further improving the overall structural stability of the iron core, and providing a solid foundation for the efficient operation of the electromagnetic components.

[0024] For specific embodiments, please refer to Figure 3 In the stator outer ring 1, the first outer ring piece 101 and the second outer ring piece 101 each have multiple receiving windows 7 on their surfaces. Starting from the third outer ring piece 101, the surfaces of the outer ring pieces 101 abruptly change to one side to form abrupt change portions 6. The abrupt change portions 6 of the subsequent outer ring piece 101 are embedded in the abrupt change portions 6 of the previous outer ring piece. The abrupt change portions 6 of the third outer ring piece 101 are embedded in the receiving windows 7 and remain flush with the surface of the first outer ring piece 101.

[0025] In a specific embodiment, in the stator inner ring 3, the first inner ring piece 301 and the second inner ring piece 301 each have multiple receiving windows 7 on their surfaces. Starting from the third inner ring piece 301, the surfaces of the inner ring pieces 301 abruptly change to one side to form abrupt change portions 6, and the abrupt change portions 6 of the subsequent inner ring pieces 301 are respectively embedded in the abrupt change portions 6 of the previous outer ring. The abrupt change portions 6 of the third inner ring piece 301 are embedded in the receiving windows 7 and remain flush with the surface of the first inner ring piece 301.

[0026] For specific embodiments, please refer to Figure 4 The stator inner ring 3 has multiple ventilation windows 3014 circumferentially arranged. This structural design allows airflow to quickly enter from the inner openings of the ventilation windows 3014 when the rotor rotates at high speed, forming an efficient forced ventilation circulation. At the same time, the multiple ventilation windows 3014 can ensure the uniformity of ventilation in the stator inner ring 3 circumferentially, avoiding overheating caused by poor heat dissipation in some areas.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A rotor core structure that is easy to inject adhesive, comprising a rotor core (4) and a magnetic ring (5) of annular structure, wherein the rotor core (4) is axially bonded inside the magnetic ring (5) by adhesive, and the rotor core (4) is formed by stacking multiple rotor plates (401) with the same structure, characterized in that, The rotor plate (401) has multiple arc-shaped grooves (4011) equidistantly spaced around its circumference, and the rotor plate (401) has a circular hole area (4013) corresponding to the arc-shaped groove (4011). The space inside the arc-shaped groove (4011) and the space inside the circular hole area (4013) are connected by a narrow hole area (4012). In the rotor core (4), the diameter of the circular hole area (4013) on the first rotor plate (401) to the last rotor plate (401) decreases step by step.

2. The rotor core structure for easy glue injection as described in claim 1, characterized in that: The inner hole of the magnetic ring (5) has an axially formed inner ring groove (502) for fitting the rotor core (4).

3. The rotor core structure for easy glue injection as described in claim 1, characterized in that: An observation groove (501) is provided on the front end face of the magnetic ring (5).

4. The rotor core structure for easy glue injection as described in claim 1, characterized in that: In the rotor core (4), the first rotor plate (401) and the second rotor plate (401) are provided with multiple receiving windows (7). Starting from the third rotor plate (401), the surface of the rotor plate (401) abruptly changes to one side to form abrupt change portion (6). The abrupt change portion (6) of the next rotor plate (401) is embedded in the abrupt change portion (6) of the previous outer ring in sequence. The abrupt change portion (6) of the third rotor plate (401) is embedded in the receiving window (7) and remains flush with the surface of the first rotor plate (401).

5. A stator core structure suitable for use with the rotor core structure of claim 1, characterized in that, It includes a stator outer ring (1), which is formed by stacking multiple outer ring pieces (101) with the same structure, and an inner ring window (1012) is opened in the central region of the outer ring piece (101). The stator inner ring (3) is formed by stacking multiple inner ring plates (301) with the same structure. The inner ring plate (301) includes a middle part (3011) and at least three extensions (3013) connected to the middle part (3011). The extensions (3013) are radially distributed in the circumference of the middle part (3011). The middle part (3011) has a rotor window (3012) with a non-circular structure. The end of the extension (3013) is fitted into the positioning groove (1013) opened on the inner wall of the inner ring window (1012).

Images