Pressure-resistant motor stator frame and motor

Abstract

The utility model discloses a kind of pressure-resistant motor stator framework and motor, wherein pressure-resistant motor stator framework includes the framework main body (1) of being sleeved in any stator tooth outside, first winding post and second winding post (2) are respectively equipped on the framework main body (1), second winding post (2) is located at the edge of framework main body (1), the first wire channel (3) for wiring is formed in the outside of second winding post (2);The end of the first winding post is equipped with stop block (4), the inside of stop block (4) forms the second wire channel (5) for wiring. The utility model can avoid the jam of lead-out wire, and improve the structural stability of stator winding.

Description

Technical Field

[0001] This utility model relates to a motor stator frame, and more particularly to a pressure-resistant motor stator frame and motor. Background Technology

[0002] To improve material utilization during the processing of motor stator laminations, some manufacturers are adjusting the traditional ring structure to a long strip structure, which is then wound into a ring-shaped stator core, thereby reducing waste generated during the stamping process. Furthermore, to improve the stability of the stator frame's coverage of the stator core, the stator frame's shape also needs to be changed from the traditional ring frame to a single-piece structure, such as the stator winding frame in patent 201610643058.7. This allows each stator frame to correspond to a single stator tooth and ensures the stability of the frame's fastening.

[0003] However, a problem encountered in actual use of this stator frame is that, due to limitations in the stator frame manufacturing process, an inwardly recessed manufacturing gap inevitably forms at the joint between adjacent stator frames after installation, and this gap extends axially through the stator frame. Furthermore, when a stator winding on any stator frame extends outward and enters an adjacent stator frame, there is a possibility that the lead wire may become stuck in the manufacturing gap due to force displacement during winding, thereby reducing the inter-turn withstand voltage performance of the motor.

[0004] In addition, some manufacturers currently completely encapsulate the stator after the stator windings are wound, thus using the encapsulation layer to completely wrap the stator structure. This improves both the structural stability of the components in the motor stator and the overall insulation effect of the motor stator. However, during the encapsulation process, the injection plastic flows irregularly around the stator windings, applying pressure in different directions. This can cause the stator windings to detach from the stator frame winding posts under stress, affecting the winding stability of the stator windings.

[0005] Therefore, existing motor stator frames suffer from problems such as easy jamming of lead wires and poor winding stability. Utility Model Content

[0006] The purpose of this invention is to provide a pressure-resistant motor stator frame and motor. It can prevent the lead wires from getting stuck and improve the structural stability of the stator windings.

[0007] The technical solution of this utility model is: a pressure-resistant motor stator frame, including a frame body sleeved on the outside of any stator tooth, a first winding post and a second winding post respectively provided on the frame body, the second winding post being located at the edge of the frame body, and a first wiring channel for wiring being formed on the outside of the second winding post; a stop block is provided at the end of the first winding post, and a second wiring channel for wiring is formed on the inner side of the stop block.

[0008] In the aforementioned pressure-resistant motor stator frame, contact surfaces are formed on both sides of the frame body, and the contact surfaces of adjacent frame bodies fit together; the second winding post is symmetrically arranged on both sides of the frame body, the sidewall of the second winding post is flush with the contact surface, and the second winding post of adjacent frame bodies fit together.

[0009] In the aforementioned pressure-resistant motor stator frame, the frame body is formed by two separate frame units that are interlocked with each other. An opening is formed in the middle of the two frame units for the stator teeth to pass through, and the outer sides of the two frame units are connected to the first winding post.

[0010] In the aforementioned pressure-resistant motor stator frame, the first winding post includes an upper winding post and a lower winding post. The upper winding post is located at the top of the frame body, and the lower winding post is located at the bottom of the frame body. The stop block is disposed at the upper end of the upper winding post.

[0011] In the aforementioned pressure-resistant motor stator frame, the lower winding column includes an inner winding section and an outer winding section. The inner winding section and the outer winding section are arranged in a staggered manner along the radial direction of the motor stator. There are two outer winding sections located on both sides of the inner winding section. A third wiring channel for wiring is formed between the inner winding section and the outer winding section.

[0012] In the aforementioned pressure-resistant motor stator frame, the cross-sectional shape of the outer winding portion is L-shaped.

[0013] In the aforementioned pressure-resistant motor stator frame, one side of the second winding post is provided with an outwardly protruding rib, and a stepped surface is formed between the rib and the frame body.

[0014] An electric motor is also provided, which includes the aforementioned pressure-resistant motor stator frame.

[0015] Compared with the prior art, this utility model has the following characteristics: (1) By limiting the structure of the second winding post, the stator winding can be routed from the first routing channel outside the second winding post when it is led out, thereby avoiding the process gap between adjacent skeleton bodies and effectively preventing the lead wire from getting stuck during routing; by setting the stop block at the end of the first winding post, the winding wire can be axially limited, effectively preventing the winding wire from detaching from the first winding post under the squeezing action of the injection plastic, that is, improving the structural stability of the stator winding. (2) Based on the above, by setting the ribs on the second winding post, the winding wire can be blocked to prevent the winding wire from getting stuck in the process gap between adjacent second winding posts. (3) By coordinating the inner and outer winding sections, the outer winding section can also provide radial limiting for the winding wires, further reducing the possibility of the winding wires coming loose; by limiting the structure of the outer winding section, the structural strength of the outer winding section can be improved, reducing the possibility of the outer winding section breaking during motor installation. Therefore, this invention can avoid the jamming of the lead wires and improve the structural stability of the stator winding. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure on one side of Embodiment 1; Figure 2 This is a schematic diagram of the structure on the other side of Embodiment 1; Figure 3 This is a schematic diagram of the installation of adjacent second winding posts in Example 1; Figure 4 This is a schematic diagram of the motor stator after the plastic coating layer has been removed in Example 2.

[0017] The labels in the attached diagram are as follows: 1-Skeleton body, 2-Second winding post, 3-First wiring channel, 4-Block, 5-Second wiring channel, 6-Upper winding post, 7-Lower winding post, 8-Third wiring channel, 9-Step surface, 10-Stator core, 11-Process gap, 12-Slot, 13-Lead-out frame, 14-Insulation frame, 15-Conductive sheet, 201-Ribbon, 701-Inner winding section, 702-Outer winding section. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present invention.

[0019] Example 1. A pressure-resistant motor stator frame, configured as follows: Figure 1-3 As shown, the skeleton body 1 is fitted onto the outside of any stator tooth of the stator core. The skeleton body 1 is provided with a first winding post and a second winding post 2. The second winding post 2 is located at the edge of the skeleton body 1, and a first wiring channel 3 for wiring is formed on the outside of the second winding post 2. A stop block 4 is provided at the end of the first winding post, and a second wiring channel 5 for wiring is formed on the inner side of the stop block 4.

[0020] The two sides of the skeleton body 1 form contact surfaces, and the contact surfaces of adjacent skeleton bodies 1 are in contact with each other; the second winding post 2 is symmetrically arranged on both sides of the skeleton body 1, the side wall of the second winding post 2 is flush with the contact surface, and the second winding post 2 of adjacent skeleton bodies 1 are in contact with each other.

[0021] The main body of the skeleton 1 is formed by two separate skeleton units that are interlocked together. An opening is formed in the middle of the two skeleton units for the stator teeth to pass through, and the outer sides of the two skeleton units are connected to the first winding post.

[0022] The first winding post includes an upper winding post 6 and a lower winding post 7. The upper winding post 6 is located at the top of the skeleton body 1, and the lower winding post 7 is located at the bottom of the skeleton body 1. The stop block 4 is disposed at the upper end of the upper winding post 6, and the second winding post 2 is located on both sides of the lower winding post 7.

[0023] When the motor stator is coated with plastic, the upper winding post 6 is located at the top of the motor stator and is set vertically upward, while the lower winding post 7 is located at the bottom of the motor stator and is set vertically downward; the plastic is injected from the top of the motor stator.

[0024] The lower winding post 7 includes an inner winding section 701 and an outer winding section 702. The inner winding section 701 and the outer winding section 702 are arranged in a staggered manner along the radial direction of the motor stator. There are two outer winding sections 702 located on both sides of the inner winding section 701. A third wiring channel 8 for wiring is formed between the inner winding section 701 and the outer winding section 702.

[0025] The cross-sectional shape of the outer winding portion 702 is L-shaped.

[0026] The second winding post 2 has an outwardly protruding rib 201 on one side, and a stepped surface 9 is formed between the rib 201 and the skeleton body 1.

[0027] In this embodiment, by setting the second winding posts 2 on both sides of the skeleton body 1, the stator winding wound on the skeleton body 1 can enter the third winding channel 8 along the first winding channel 3 when it is being routed, thereby effectively preventing the winding wire from entering the process gap of the adjacent skeleton body 1 during the routing process and improving the winding quality of the stator winding.

[0028] By using the stop block 4 on the upper winding post 6, the winding wires in the second winding channel 5 can be axially limited, thereby preventing the injection molding material from impacting the winding wires in the second winding channel 5 during the coating process and causing the winding wires to detach from the upper winding post 6. The winding wires on the lower winding post 7, being far from the injection port, experience relatively low impact during the coating process and do not require protection from the stop block 4.

[0029] Example 2. Motor, configured as follows Figure 4As shown, the device includes a motor stator, which includes a stator core 10. Several stator teeth are distributed around the stator core 10. Each stator tooth is provided with a pressure-resistant motor stator frame of Embodiment 1 on its outer side. Adjacent pressure-resistant motor stator frames form a process gap 11 at the joint. A stator winding is wound around the outside of the pressure-resistant motor stator frame. The stator core 10, the pressure-resistant motor stator frame, and the stator winding are covered with a plastic coating layer.

[0030] The stator core is provided with several elongated slots 12 around its perimeter. A lead wire frame 13 is fastened and connected inside the slots 12. An insulating frame 14 is fastened and connected to the outside of the lead wire frame 13. Multiple conductive sheets 15 are provided inside the insulating frame 14. One end of the conductive sheet 15 extends into the lead wire frame 13, and the other end of the conductive sheet 15 extends to the outside of the plastic coating layer and forms a socket. The lead wires of the stator winding extend into the lead wire frame 13 and are electrically connected to the conductive sheets 15.

[0031] After injection molding, the plastic coating layer partially encapsulates the insulating frame 14, ensuring that the insulating frame 14 is completely encased within the plastic coating layer at the end near the lead-out frame 13. The plastic coating layer also serves to connect and fix the insulating frame 14, lead-out frame 13, and each main frame 1 to the outside of the stator core 10. The insulating frame 14 is exposed outside the plastic coating layer at the end near the socket. When the motor is powered on, the external power cord can be plugged into the socket, thereby energizing the stator windings using the conductive sheet 15.

[0032] This embodiment applies the pressure-resistant motor stator frame of Embodiment 1 to the motor stator, which can effectively prevent the stator winding from getting caught in the process gap 11 between adjacent frame bodies 1 when it is led out, thereby improving the winding stability of the stator winding.

[0033] On the other hand, by setting the lead frame 13 and the insulation frame 14 outside the motor stator, the stator winding can be led out, thereby improving the convenience of connecting the stator winding to the external power line. On the other hand, the lead frame 13 and the insulation frame 14 can be used to protect the stator winding output end during the plastic wrapping process, thereby ensuring the structural stability of the stator winding after plastic wrapping.

Claims

1. A pressure-resistant motor stator frame, comprising a frame body (1) sleeved on the outside of any stator tooth, characterized in that: The skeleton body (1) is provided with a first winding post and a second winding post (2). The second winding post (2) is located at the edge of the skeleton body (1). The outside of the second winding post (2) forms a first wiring channel (3) for wiring. The end of the first winding post is provided with a stop (4). The inside of the stop (4) forms a second wiring channel (5) for wiring.

2. The pressure-resistant motor stator frame according to claim 1, characterized in that: The two sides of the skeleton body (1) form contact surfaces, and the contact surfaces of adjacent skeleton bodies (1) fit together; the second winding post (2) is symmetrically arranged on both sides of the skeleton body (1), the side wall of the second winding post (2) is flush with the contact surface, and the second winding post (2) of adjacent skeleton bodies (1) fit together.

3. The pressure-resistant motor stator frame according to claim 1, characterized in that: The main body of the skeleton (1) is formed by two separate skeleton units that are interlocked with each other. An opening is formed in the middle of the two skeleton units for the stator teeth to pass through, and the outer sides of the two skeleton units are connected to the first winding post.

4. The pressure-resistant motor stator frame according to claim 3, characterized in that: The first winding post includes an upper winding post (6) and a lower winding post (7). The upper winding post (6) is located at the top of the skeleton body (1), and the lower winding post (7) is located at the bottom of the skeleton body (1). The stop block (4) is set at the upper end of the upper winding post (6).

5. The pressure-resistant motor stator frame according to claim 4, characterized in that: The lower winding post (7) includes an inner winding part (701) and an outer winding part (702). The inner winding part (701) and the outer winding part (702) are arranged in a staggered manner along the radial direction of the motor stator. There are two outer winding parts (702) located on both sides of the inner winding part (701). A third wiring channel (8) for wiring is formed between the inner winding part (701) and the outer winding part (702).

6. The pressure-resistant motor stator frame according to claim 5, characterized in that: The cross-sectional shape of the outer winding part (702) is L-shaped.

7. The pressure-resistant motor stator frame according to claim 1, characterized in that: The second winding post (2) has an outwardly protruding rib (201) on one side, and a stepped surface (9) is formed between the rib (201) and the skeleton body (1).

8. An electric motor, characterized in that: The motor includes the pressure-resistant motor stator frame as described in any one of claims 1-7.

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