Segmented motor rotor core

Abstract

The utility model discloses a sectional motor rotor core relates to rotor core technical field, including core assembly, second core, clamping component, first lightening hole, second lightening hole and reinforcing ring, the front of core assembly is installed to second core, and the middle part of core assembly and the middle part of second core are fixed to clamping component, a plurality of first lightening holes are opened in the front of core assembly, a plurality of second lightening holes are opened in the front of second core and are annular array, and a plurality of reinforcing rings are fixed respectively and are inserted in the inner chamber of a plurality of first lightening holes and the inner chamber of a plurality of second lightening holes. The utility model discloses through the setting mode of cooperation of core assembly, second core, clamping component, enhances the air flow of the clamp head place, improves the heat dissipation efficiency, forms the heat dissipation gap, reduces the temperature rise, reduces the core weight, reduces the material waste, promotes the overall structural strength, improves the transmission stability, reduces the relative sliding, improves the transmission accuracy of rotor core.

Description

Technical Field

[0001] This utility model relates to the field of rotor core technology, and in particular to a segmented motor rotor core. Background Technology

[0002] In motor design, the rotor core is one of the core components, and its structure directly affects the motor's efficiency, heat dissipation performance, mechanical strength, and operational stability.

[0003] While traditional rotor cores have a simple structure, they often face problems such as insufficient heat dissipation, high eddy current losses, and excessive weight in high-speed, high-power applications. Furthermore, the connection between ordinary rotor cores and the motor shaft typically uses keyways or interference fits, which can easily lead to stress concentration at high speeds, causing wear or loosening and affecting motor lifespan. In recent years, segmented rotor cores have gradually become a research hotspot. By dividing the core into multiple segments and optimizing the structural design, they aim to improve heat dissipation efficiency, reduce weight, and enhance mechanical stability.

[0004] However, the existing segmented rotor core has a simple heat dissipation hole design, low ventilation efficiency, and limited heat dissipation capacity, which leads to temperature rise problems. In addition, keyways or interference fits are prone to wear after long-term operation, which can easily lead to a reduction in the transmission accuracy of the rotor core. Utility Model Content

[0005] The purpose of this invention is to provide a segmented motor rotor core to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a segmented motor rotor core, comprising:

[0007] Iron core assembly;

[0008] The second iron core is mounted on the front side of the iron core assembly;

[0009] A snap-fit ​​assembly, which is fixed to the middle of the core assembly and the middle of the second core;

[0010] First weight reduction hole, multiple first weight reduction holes are opened on the front side of the iron core assembly;

[0011] The second weight reduction hole, a plurality of the second weight reduction holes are arranged in a ring array on the front side of the second iron core;

[0012] Reinforcing rings, wherein multiple reinforcing rings are respectively fixedly inserted into the inner cavities of multiple first weight-reducing holes and multiple second weight-reducing holes.

[0013] Preferably, one end of the second iron core is provided with inclined slots arranged in a ring array, and the second iron core and the iron core assembly are provided with multiple threaded slots arranged opposite each other, and the inner cavities of two oppositely arranged threaded slots are threadedly connected to a screw.

[0014] Preferably, the core assembly includes:

[0015] The first iron core, one end of which is fitted and opposite to the second iron core;

[0016] The locking heads, a plurality of the locking heads, are fixed to the outer wall of the first iron core in a ring array;

[0017] The heat dissipation holes are T-shaped and located in the middle of the card head;

[0018] Connection holes, with multiple connection holes respectively opened on both sides of the heat dissipation hole.

[0019] Preferably, a plurality of the first weight-reducing holes are arranged in a ring array on the front side of the first iron core, wherein a plurality of threaded grooves are formed on the first iron core near one end of the shaft hole.

[0020] Preferably, the snap-fit ​​assembly includes:

[0021] The limiting blocks are respectively fixed to the inner wall of the shaft hole of the first iron core and the inner wall of the shaft hole of the second iron core;

[0022] V-groove, the V-groove being formed in the middle of the limiting block;

[0023] External chamfers, a plurality of external chamfers are provided at the corners of the limiting block and at the corners adjacent to the V-groove;

[0024] The inner chamfer is formed at the bottom of the inner wall of the V-groove and at the contact point between the limiting block and the inner wall of the first iron core shaft hole.

[0025] Preferably, the inclined groove is disposed at one end of the second iron core near the first iron core, and the screw is used to fix the positions of the first iron core and the second iron core.

[0026] The technical effects and advantages of this utility model are as follows:

[0027] This invention utilizes a combination of a core assembly, a second core, and a snap-fit ​​assembly. T-shaped heat dissipation holes and oblique connecting holes enhance airflow at the snap-fit ​​head, improving heat dissipation efficiency. An oblique groove between the first and second cores creates a heat dissipation gap, reducing temperature rise. The evenly distributed first and second weight-reduction holes reduce core weight and material waste. Reinforcing rings are embedded within the weight-reduction holes to enhance overall structural strength and prevent rigidity loss due to weight reduction. The V-groove of the snap-fit ​​assembly matches the motor shaft, improving transmission stability, reducing relative slippage, and enhancing the transmission accuracy of the rotor core. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall front structure of this utility model.

[0029] Figure 2 This is a schematic diagram of the overall structure of the second iron core of this utility model.

[0030] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0031] In the diagram: 1. Iron core assembly; 11. First iron core; 12. Clamping head; 13. Heat dissipation hole; 14. Connecting hole; 2. Second iron core; 3. Clamping assembly; 31. Limiting block; 32. V-groove; 33. Outer chamfer; 34. Inner chamfer; 4. First weight reduction hole; 5. Second weight reduction hole; 6. Reinforcing ring; 7. Inclined groove; 8. Threaded groove; 9. Screw. Detailed Implementation

[0032] 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.

[0033] This utility model provides, for example Figure 1-3The segmented motor rotor core shown includes a core assembly 1, a second core 2, a snap-fit ​​assembly 3, a first weight-reducing hole 4, a second weight-reducing hole 5, and a reinforcing ring 6. The second core 2 is installed on the front side of the core assembly 1. The core assembly 1 includes a first core 11, snap-fit ​​heads 12, heat dissipation holes 13, and connecting holes 14. One end of the first core 11 is fitted against the second core 2. Multiple snap-fit ​​heads 12 are fixed to the outer wall of the first core 11 in a circular array. The heat dissipation holes 13 are T-shaped and opened in the middle of the snap-fit ​​heads 12. Multiple connecting holes 14 are opened on both sides of the heat dissipation holes 13. The multiple connecting holes 14 are opened on the same inclined surface. The opening of the heat dissipation holes 13 and the connecting holes 14 facilitates the improvement of the stability of the snap-fit ​​heads 12 and improves the heat dissipation efficiency of the motor rotor core.

[0034] The snap-fit ​​assembly 3 is fixed to the middle of the iron core assembly 1 and the middle of the second iron core 2. Multiple first weight-reducing holes 4 are opened on the front of the iron core assembly 1, and multiple second weight-reducing holes 5 are opened in a ring array on the front of the second iron core 2. Multiple first weight-reducing holes 4 are opened in a ring array on the front of the first iron core 11. The opening of the first weight-reducing holes 4 and the second weight-reducing holes 5 facilitates the reduction of the weight of the first iron core 11 and the second iron core 2, reducing the waste of resources. Multiple reinforcing rings 6 are respectively fixedly inserted into the inner cavity of the multiple first weight-reducing holes 4 and the inner cavity of the multiple second weight-reducing holes 5. The reinforcing rings 6 are inserted and fixedly connected to the middle of the first iron core 11 and the second iron core 2, which facilitates the improvement of the firmness of the first iron core 11 and the second iron core 2.

[0035] One end of the second iron core 2 has a slanted groove 7 arranged in a ring array. The slanted groove 7 is located at the end of the second iron core 2 near the first iron core 11. The second iron core 2 and the iron core assembly 1 have multiple threaded grooves 8 arranged opposite each other. The multiple threaded grooves 8 are located at the end of the first iron core 11 near the shaft hole. The inner cavities of the two opposite threaded grooves 8 are threadedly connected to a screw 9. The screw 9 is used to fix the position of the first iron core 11 and the second iron core 2. Through the threaded connection between the screw 9 and the threaded groove 8 on the first iron core 11 and the threaded connection between the screw 9 and the threaded groove 8 on the second iron core 2, the screw 9 passes through the threaded groove 8 of the first iron core 11 and the second iron core 2 to ensure that the segmented iron cores are tightly connected, prevent loosening during high-speed rotation, and facilitate the improvement of the connection stability between the first iron core 11 and the second iron core 2.

[0036] Specifically, the snap-fit ​​assembly 3 includes a limiting block 31, a V-groove 32, an outer chamfer 33, and an inner chamfer 34. Multiple limiting blocks 31 are respectively fixed to the inner walls of the shaft holes of the first iron core 11 and the second iron core 2. The two limiting blocks 31 are integrally formed with the first iron core 11 and the second iron core 2, respectively. The V-groove 32 is located in the middle of the limiting block 31 and matches the motor shaft, improving transmission stability and reducing relative slippage. Multiple outer chamfers 33 are located at the corners of the limiting block 31 and are aligned with the V-groove 34. At adjacent corners, inner chamfers 34 are formed at the bottom of the inner wall of the V-groove 32 and at the contact point between the limiting block 31 and the inner wall of the shaft hole of the first iron core 11. Outer chamfers 33 and inner chamfers 34 reduce stress concentration, reduce wear, extend service life, improve the stability of the connection between the upper shaft of the motor and the shaft hole in the middle of the first iron core 11 and the second iron core 2, reduce wear at the corners of the limiting block 31, and the upper shaft of the motor is provided with a groove that matches the V-groove 32, so that it can pass through the V-groove 32 and increase the stability of the connection and rotation between the rotor iron core and the motor shaft.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A segmented motor rotor core, characterized in that... ,include: Iron core assembly (1); The second iron core (2) is mounted on the front side of the iron core assembly (1); The snap-fit ​​assembly (3) is fixed to the middle part of the iron core assembly (1) and the middle part of the second iron core (2); First weight reduction hole (4), multiple first weight reduction holes (4) are opened on the front side of the iron core assembly (1); Second weight reduction holes (5), multiple second weight reduction holes (5) are arranged in a ring array on the front side of the second iron core (2); The reinforcing rings (6) are respectively fixedly inserted into the inner cavities of the first weight-reducing holes (4) and the inner cavities of the second weight-reducing holes (5).

2. The segmented motor rotor core according to claim 1, characterized in that, One end of the second iron core (2) is provided with inclined slots (7) arranged in a ring array. The second iron core (2) and the iron core assembly (1) are provided with multiple threaded slots (8) respectively. The inner cavities of the two threaded slots (8) are threadedly connected to screws (9).

3. A segmented motor rotor core according to claim 2, characterized in that, The core assembly (1) includes: The first iron core (11) is positioned in close contact with the second iron core (2) at one end; The clips (12) are arranged in a ring array and fixed to the outer wall of the first iron core (11); Heat dissipation hole (13), the heat dissipation hole (13) is T-shaped and opened in the middle of the card head (12); Connection holes (14) are respectively opened on both sides of the heat dissipation hole (13).

4. A segmented motor rotor core according to claim 3, characterized in that, Multiple first weight-reducing holes (4) are arranged in a ring array on the front side of the first iron core (11), and multiple threaded grooves (8) are opened on the first iron core (11) near the shaft hole.

5. A segmented motor rotor core according to claim 3, characterized in that, The snap-fit ​​assembly (3) includes: Limiting blocks (31), a plurality of the limiting blocks (31) are respectively fixed to the inner wall of the shaft hole of the first iron core (11) and the inner wall of the shaft hole of the second iron core (2); V-groove (32), the V-groove (32) is formed in the middle of the limiting block (31); External chamfers (33), a plurality of external chamfers (33) are provided at the corners of the limiting block (31) and at the corners adjacent to the V-groove (32); The inner chamfer (34) is located at the bottom of the inner wall of the V-groove (32) and at the contact point between the limiting block (31) and the inner wall of the shaft hole of the first iron core (11).

6. A segmented motor rotor core according to claim 3, characterized in that, The inclined groove (7) is located at one end of the second iron core (2) near the first iron core (11), and the screw (9) is used to fix the position of the first iron core (11) and the second iron core (2).

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