Chip of motor stator eccentric structure
Patent Information
- Application Number
- CN202522009928.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-18
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-09-18
AI Technical Summary
[0005]与现有技术相比，本实用新型在齿部、齿靴与芯片主体的内壁之间形成定子槽，通过在齿靴背向所述马达转子的一侧从靠近的齿部的一端依次设置第一侧边及第二侧边，使所述第二侧边呈圆弧形且半径范围为18-19mm，又在所述芯片主体的内孔的长边与所述内孔的短边之间连接有第一弧边，使所述第一弧边呈圆弧形且半径范围为25-26mm，这样相对传统的定子芯片，在齿面半径不变的情况下，本方案通过增大芯片主体的短边长度、第一弧边的半径以及缩小所述齿部的第二侧边的半径，使得所述定子槽的面积相比传统的定子槽的面积更大，因而可以容置直径更大、数量更多的铝线，从而保证马达定子的性能，而采用铝线代替铜线更可以大大降低马达的成本，提高设备的市场竞争力。
Smart Images
Figure CN224790405U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a motor, and more particularly to a chip with an eccentric stator structure for a motor. Background Technology
[0002] The stator of a conventional motor is generally formed by stacking multiple laminations (clad) with teeth and toothed shoes. A stator slot is formed on one side of each tooth and toothed shoe, and wires are wound around the teeth and pass through the stator slot. However, the space in a traditional motor stator slot is limited (tooth radius 29.3mm, long side 43.1mm, short side 37mm, tooth back side radius 21.5mm), which restricts the number of wires that can be placed in the stator slot. If the same number of aluminum wires as copper wires are used in the stator slot, the motor performance is much lower than if copper wires were used. Therefore, copper wires are generally used for winding in the stator slot, but the high price of copper wires increases the cost of the motor. Utility Model Content
[0003] The purpose of this invention is to provide a chip with an eccentric stator structure that enables the motor stator to be wound with aluminum wire, thereby reducing the cost of the motor.
[0004] To achieve the above objectives, this utility model provides a chip with a motor stator eccentric structure, comprising a chip body, teeth, and toothed shoes. The chip body has an inner hole. One end of the teeth is connected to the long edge of the inner hole of the chip body. The toothed shoes are symmetrically connected to the other end of the teeth and located within the inner hole. A stator slot is formed between the teeth, toothed shoes, and the inner wall of the chip body. A tooth surface facing the motor rotor is formed between the inner sides of the two toothed shoes. The tooth surface is arc-shaped with a radius ranging from 29 to 30 mm. On the side of the toothed shoes facing away from the motor rotor, a first side edge and a second side edge are sequentially provided from the end closest to the teeth. The second side edge is arc-shaped with a radius ranging from 18 to 19 mm. A first arc edge is connected between the long side and the short side of the inner hole of the chip body. The first arc edge is arc-shaped with a radius ranging from 25 to 26 mm.
[0005] Compared with the prior art, this utility model forms a stator slot between the teeth, the tooth shoe, and the inner wall of the chip body. By sequentially setting a first side and a second side on the side of the tooth shoe facing away from the motor rotor, the second side is arc-shaped with a radius of 18-19mm. Furthermore, a first arc edge is connected between the long side and the short side of the inner hole of the chip body, making the first arc edge arc-shaped with a radius of 25-26mm. Compared with traditional stator chips, while keeping the tooth surface radius unchanged, this solution increases the length of the short side of the chip body, the radius of the first arc edge, and reduces the radius of the second side of the teeth, resulting in a larger area of the stator slot compared to traditional stator slots. Therefore, it can accommodate larger diameter and more aluminum wires, thereby ensuring the performance of the motor stator. Using aluminum wire instead of copper wire can also greatly reduce the cost of the motor and improve the market competitiveness of the equipment.
[0006] Preferably, the center of the second side is offset from the center of the tooth surface. This allows the back of the tooth shoe to be further offset from the inner wall of the inner hole, thereby further increasing the area of the stator slot.
[0007] Specifically, the first side is a straight edge. This avoids the back of the toothed shoe occupying more stator slot space, thus increasing the area of the stator slot.
[0008] Specifically, the included angle between the first sides of the two toothed shoes located on the same side ranges from 92 to 96 degrees. This allows the back of the toothed shoe to be further offset from the inner wall of the inner hole, thereby further increasing the area of the stator slot.
[0009] Preferably, the center of the first arc edge is concentric with the center of the tooth surface.
[0010] Preferably, the length of the long side of the inner hole of the chip body is in the range of 42-44 mm; the length of the short side of the inner hole of the chip body is in the range of 40-42 mm. Attached Figure Description
[0011] Figure 1 This is a structural diagram of the chip with the eccentric structure of the motor stator of this utility model.
[0012] Figure 2 This is a side view of the motor stator of this utility model. Detailed Implementation
[0013] To explain in detail the technical content, structural features, objectives and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.
[0014] Please see Figure 1 and Figure 2The motor stator of this utility model includes multiple stacked eccentrically arranged chips 100. Each eccentrically arranged chip 100 includes a chip body 1, teeth 2, and toothed shoes 3. The chip body 1 has an inner hole 11. One end of each tooth 2 is connected to the long side L edge of the inner hole 11 of the chip body 1. In this embodiment, two teeth 2 are symmetrically arranged inside the inner hole 11 of the chip body 1. The toothed shoes 3 are symmetrically connected to the other end of each tooth 2 and located inside the inner hole 11. A stator groove 13 is formed between the teeth 2, the toothed shoes 3, and the inner wall of the chip body 1 to allow aluminum wires 200 to pass through. A tooth surface 31 facing the motor rotor is formed between the inner sides of the two toothed shoes 3. The tooth surface 31 is arc-shaped with a radius r ranging from 29 to 30 mm. In this embodiment, the tooth surface 31 is arc-shaped with a radius r of 29.3 mm. The toothed shoe 3, facing away from the motor rotor, has a first side 32 and a second side 33 sequentially arranged from the end closest to the tooth 2. The second side 33 is arc-shaped with a radius R ranging from 18 to 19 mm; in this embodiment, the radius R of the second side 33 is 18.5 mm. A first arc edge 12 connects the long side L and the short side N of the inner hole 11 of the chip body 1. The first arc edge 12 is arc-shaped with a radius Q ranging from 25 to 26 mm; in this embodiment, the radius Q of the first arc edge 12 is 25.5 mm. The center of the first arc edge 12 is concentric with the center O of the tooth surface 31. More specifically, the long side L, the first arc edge 12, the short side N, the first side 32, and the second side 33 form a semi-open stator slot 13.
[0015] The center p of the second side 33 is offset from the center O of the tooth surface 31. This allows the back of the tooth shoe 3 to be further offset from the inner wall of the inner hole 11, thereby further increasing the area of the stator slot 13.
[0016] The first side 32 is a straight edge. This avoids the back of the toothed shoe 3 occupying more stator slot space, thus increasing the area of the stator slot 13.
[0017] The included angle α between the first side edges 32 of the two toothed shoe 3 located on the same side ranges from 92 to 96 degrees. In this embodiment, the included angle α is 94 degrees. This allows the back surface of the toothed shoe 3 to be further offset from the inner wall of the inner hole 11, thereby further increasing the area of the stator slot 13.
[0018] The length of the long side L of the inner hole 11 of the chip body 1 ranges from 42 to 44 mm; the length of the short side N of the inner hole 11 of the chip body 1 ranges from 40 to 42 mm. In this embodiment, the length of the long side L of the inner hole 11 of the chip body 1 is 43 mm, and the length of the short side N is 41 mm.
[0019] Compared with the prior art, this utility model forms a stator groove 13 between the tooth 2, the tooth shoe 3, and the inner wall of the chip body 1. A first side 32 and a second side 33 are sequentially arranged from one end of the tooth on the side of the tooth shoe 3 facing away from the motor rotor, making the second side 33 arc-shaped with a radius R ranging from 18-19 mm. Furthermore, a first arc edge 12 is connected between the long side L and the short side N of the inner hole 11 of the chip body 1, making the first arc edge 12 arc-shaped with a radius ranging from 25- With a diameter of 26mm, compared to traditional stator chips, this solution increases the length of the short side N of the chip body 1, the radius of the first arc side 12, and reduces the radius of the second side side 33 of the tooth 2, making the area of the stator slot 13 larger than that of a traditional stator slot. This allows for the accommodation of larger diameter and more aluminum wires 200, thus ensuring motor performance. Furthermore, using aluminum wires 200 instead of copper wires can significantly reduce motor costs and improve the market competitiveness of the equipment.
[0020] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the scope of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A chip with an eccentric stator structure for a motor, characterized in that: The chip includes a chip body, teeth, and toothed shoes. The chip body has an inner hole. One end of the teeth is connected to the long edge of the inner hole of the chip body. The toothed shoes are symmetrically connected to the other end of the teeth and located inside the inner hole. A stator slot is formed between the teeth, toothed shoes, and the inner wall of the chip body. A tooth surface facing the motor rotor is formed between the inner sides of the two toothed shoes. The tooth surface is arc-shaped with a radius of 29-30 mm. On the side of the toothed shoes facing away from the motor rotor, a first side and a second side are provided sequentially from the end closest to the teeth. The second side is arc-shaped with a radius of 18-19 mm. A first arc edge is connected between the long side and the short side of the inner hole of the chip body. The first arc edge is arc-shaped with a radius of 25-26 mm.
2. The chip with the motor stator eccentric structure according to claim 1, characterized in that: The center of the second side is offset from the center of the tooth surface.
3. The chip with the motor stator eccentric structure according to claim 2, characterized in that: The first side is a straight edge.
4. The chip with the motor stator eccentric structure according to claim 3, characterized in that: The included angle between the first sides of the two toothed boots located on the same side ranges from 92 to 96 degrees.
5. The chip with the motor stator eccentric structure according to claim 1, characterized in that: The center of the first arc edge is concentric with the center of the tooth surface.
6. The chip with the motor stator eccentric structure according to claim 1, characterized in that: The length of the long side of the inner hole of the chip body is 42-44 mm; the length of the short side of the inner hole of the chip body is 40-42 mm.