Coil framework and motor

Abstract

The utility model provides a coil framework and a motor, the coil framework comprises a framework and a plug connector, the framework comprises a framework body and a first positioning structure, and the first positioning structure is located on the peripheral wall of the framework body and is connected with the framework body; the plug connector comprises a plug connector body and a second positioning structure, the plug connector body is located on one axial end face of the framework body, the second positioning structure is located on one side of the plug connector body, and the second positioning structure is connected with the plug connector body and connected with the first positioning structure in a clamped mode. The motor assembly efficiency can be improved.

Description

Technical Field

[0001] This disclosure relates to the field of motor manufacturing technology, and in particular to a coil frame and a motor. Background Technology

[0002] The stator is the stationary part of the motor. The stator consists of a stator core and a coil frame. The coil frame is fitted around the axial ends of the stator core and connected to it. The coil is wound inside the stator core. The coil leads pass through the coil frame and are connected to the power supply lines, enabling the stator to generate a rotating magnetic field.

[0003] In related technologies, to facilitate the connection of the coil leads to an external power supply, the coil frame includes a frame and a connector, with the connector located above the frame and separate from it. The connector has sockets for inserting terminals. After the coil leads are electrically connected to the terminals inserted into the connector, the three-phase current from the external power supply can be introduced into the copper wires of the coil.

[0004] When the frame or connector is subjected to external force, the relative position of the connector and the frame will change. Since the frame and stator core are fixed, and the stator core is fixed to the motor end cover, the terminals connected to the motor end cover will be difficult to insert into the connector due to the displacement of the connector, which is not conducive to the assembly between the coil and the external power supply. Utility Model Content

[0005] This disclosure provides a coil frame and a motor, which can improve the assembly efficiency of the motor. The technical solution is as follows:

[0006] This disclosure provides a coil frame, which includes a frame and a connector. The frame includes a frame body and a first positioning structure. The first positioning structure is located on the outer peripheral wall of the frame body and connected to the frame body. The connector includes a connector body and a second positioning structure. The connector body is located on one end face of the frame body along its axial direction. The second positioning structure is located on one side of the connector body and is connected to the connector body and engaged with the first positioning structure.

[0007] In another implementation of this disclosure, the first positioning structure includes a slot that extends from one end of the skeleton body to the middle of the skeleton body along the axial direction of the skeleton body; the second positioning structure includes a limiting card, a first part of the limiting card being connected to the insertion body, and a second part of the limiting card being located in the slot.

[0008] In another implementation of this disclosure, the width of the slot gradually decreases along the extension direction of the slot, and the width direction of the slot is the circumferential direction of the skeleton body.

[0009] In another implementation of this disclosure, the limiting card includes an arc-shaped plate and an outer side plate, the arc-shaped plate being a first part of the limiting card and the outer side plate being a second part of the limiting card; the arc-shaped plate is located at one end of the axial direction of the skeleton body and is in contact with the end face of the skeleton body; the outer side plate is located on the arc-shaped side of the arc-shaped plate and is in contact with the outer peripheral wall of the skeleton body.

[0010] In another implementation of this disclosure, the first positioning structure further includes a limiting hole located within and communicating with the slot, the limiting hole extending in the radial direction of the skeleton body; the second positioning structure further includes a limiting protrusion located on the side of the outer plate facing the skeleton body and connected to the outer plate, the limiting protrusion located within the limiting hole.

[0011] In another implementation of this disclosure, there are two slots, which are distributed circumferentially along the skeleton body; there are two outer plates, which are distributed circumferentially along the arc length of the arc plate and correspond one-to-one with the two slots.

[0012] In another implementation of this disclosure, the connector body includes a plurality of continuously connected connecting platforms, and the plurality of connecting platforms form a plurality of continuously arranged steps on one side facing the axis of the skeleton body. Each step has a wiring hole on its platform surface for inserting a terminal block. Each connecting platform has a plurality of spaced wire-passing holes on the side away from the axis of the skeleton body. The plurality of wire-passing holes correspond one-to-one with the plurality of wiring holes and are connected. The axial direction of the wire-passing holes is the same as the axial direction of the skeleton body.

[0013] In another implementation of this disclosure, the connector is an integrally formed structural component.

[0014] In another implementation of this disclosure, the skeleton body includes a main ring body, a plurality of connecting ribs and a plurality of connecting pieces. The plurality of connecting pieces are arranged circumferentially and spaced inside the main ring body, and define an annular space with the main ring body. The plurality of connecting ribs are located circumferentially and spaced in the annular space, and one end of each connecting rib is connected to the inner wall of the main ring body, and the other end is connected to one of the connecting pieces. The connecting ribs extend radially along the main ring body, and a receiving space for accommodating the teeth of the end portion of the stator core is defined between two adjacent connecting ribs.

[0015] On the other hand, this disclosure also provides an electric motor, which includes a stator core, a rotor, and a coil frame. The rotor is located inside the stator core, and the coil frame is sleeved on one end of the stator core in the axial direction and connected to the stator core. The coil frame is the coil frame described above.

[0016] The beneficial effects of the technical solutions provided in this disclosure are:

[0017] When the coil frame provided in this embodiment is used in a motor, the first positioning structure in the coil frame is located on the outer peripheral wall of the frame body and connected to the frame body. Simultaneously, the second positioning structure is located on one side of the connector body and at least partially on the outer periphery of the frame body. The second positioning structure is connected to the connector body and engages with the first positioning structure. Thus, the first positioning structure on the peripheral wall of the frame body and a portion of the second positioning structure on the outer periphery of the frame body can engage with each other, fixing the relative positions of the frame and the connector. This is very convenient when the connector is connected to the coil on the stator core or to an external power supply. The assembly efficiency of the coil is not affected by changes in the relative position of the connector to the frame, greatly improving the assembly efficiency of the motor stator.

[0018] In other words, the coil frame provided in this embodiment, by providing a first positioning structure in the frame and a second positioning structure in the connector, allows the connector to be fixed to the frame through the mutual cooperation between the first and second positioning structures, enabling the connector to be quickly positioned on the frame. Therefore, the terminals mounted on the end cap can be directly aligned and inserted into the connector, greatly improving the assembly of the terminals. Simultaneously, the length of the lead wires can be designed according to the position of the connector to facilitate the lead wires passing through the connector and connecting to the terminals. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of a coil frame for a motor stator provided in an embodiment of the present disclosure;

[0021] Figure 2 for Figure 1 Schematic diagram of the central skeleton;

[0022] Figure 3 for Figure 1 A schematic diagram of the connector structure.

[0023] The symbols in the diagram represent the following meanings:

[0024] 1. Skeleton; 11. Skeleton body; 111. Main ring body; 1110. Notch; 1111. Through hole; 112. Connecting rib; 1120. Accommodating space; 113. Connecting piece; 12. First positioning structure; 120. Slot; 1200. Limiting hole; 114. Connecting block;

[0025] 3. Connector; 31. Connector body; 311. Connecting platform; 3110. Wiring hole; 3120. Wire passage hole; 32. Second positioning structure; 321. Limiting card; 3211. Arc plate; 3212. Outer plate; 322. Limiting protrusion. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this disclosure clearer, the embodiments of this disclosure will be described in further detail below with reference to the accompanying drawings.

[0027] This disclosure provides a coil frame for a motor stator, such as... Figure 1 As shown, the coil frame includes a frame 1 and a connector 3. The frame 1 includes a frame body 11 and a first positioning structure 12. The first positioning structure 12 is located on the outer peripheral wall of the frame body 11 and is connected to the frame body 11.

[0028] The connector 3 includes a connector body 31 and a second positioning structure 32. The connector body 31 is located on one end face of the skeleton body 11 along the axial direction. The second positioning structure 32 is located on one side of the connector body 31 and at least partially on the outer periphery of the skeleton body 11. The second positioning structure 32 is connected to the connector body 31 and is engaged with the first positioning structure 12.

[0029] When the coil frame provided in this embodiment is used in a motor, the first positioning structure 12 in the coil frame is located on the outer peripheral wall of the frame body 11 and connected to the frame body 11. At the same time, the second positioning structure 32 is located on one side of the connector body 31 and at least partially located on the outer periphery of the frame body 11. The second positioning structure 32 is connected to the connector body 31 and is snapped together with the first positioning structure 12. In this way, the first positioning structure 12 located on the peripheral wall of the frame body 11 and the second positioning structure 32 located on the outer periphery of the frame body 11 can be partially engaged with each other, thereby fixing the relative positions of the frame 1 and the connector 3. In this way, when the connector 3 is connected to the coil on the stator core or to an external power supply, it is very convenient and the coil assembly efficiency will not be affected by the change in the position of the connector 3 relative to the frame 1, which greatly improves the assembly efficiency of the motor stator.

[0030] In other words, the coil frame provided in this embodiment includes a first positioning structure 12 in the frame 1 and a second positioning structure 32 in the connector 3. This allows the connector 3 to be fixed to the frame 1 through the cooperation between the first positioning structure 12 and the second positioning structure 32, enabling the connector 3 to be quickly positioned on the frame 1. Since the frame 1 is integrated with the motor end cover, the terminals mounted on the end cover can be directly aligned and inserted into the connector 3, greatly improving the assembly of the terminals. Furthermore, the length of the lead wires can be designed according to the position of the connector 3 to facilitate the lead wires passing through the connector 3 and connecting to the terminals.

[0031] Figure 2 for Figure 1 A schematic diagram of the mid-frame structure. Figure 3 for Figure 1 The structural diagram of the connector in the diagram, combined with Figure 2 and Figure 3 Optionally, the first positioning structure 12 includes a slot 120 that extends from one end of the skeleton body 11 to the middle of the skeleton body 11 along the axial direction of the skeleton body 11.

[0032] The second positioning structure 32 includes a limiting card 321. The first part of the limiting card 321 is connected to the connector body 31, and the second part of the limiting card 321 is located in the card slot 120 and fits against the wall of the card slot 120.

[0033] In the above implementation, the first positioning structure 12 is set as a slot 120 and the second positioning structure 32 is set as a limiting card 321. In this way, the second part of the limiting card 321 can be inserted into the slot 120 to achieve mutual locking between the first positioning structure 12 and the second positioning structure 32, thereby enabling the position of the connector 3 and the skeleton 1 to be mutually limited.

[0034] Furthermore, the card slot 120 is configured to extend from one end of the skeleton body 11 to the middle of the skeleton body 11 along the axial direction of the skeleton body 11. This allows one end of the card slot 120 to be an open structure, which facilitates the insertion of the limiting card 321 into the card slot 120 through the opening, and facilitates the cooperation between the second positioning structure 32 and the first positioning structure 12.

[0035] In other examples, the first positioning structure 12 and the second positioning structure 32 can also be other structures. For example, a limiting post extending along the axis of the skeleton body 11 can be provided on the end face of the skeleton body 11, and a limiting hole for inserting the limiting post can be provided in the connector body 31. As long as the first positioning structure 12 and the second positioning structure 32 cooperate to fix the position between the skeleton 1 and the connector 3, this disclosure does not impose any restrictions on this.

[0036] Optionally, along the extension direction of the slot 120, the width of the slot 120 gradually decreases, and the width direction of the slot 120 is the circumferential direction of the skeleton body 11.

[0037] In the above implementation, by configuring the card slot 120 with the aforementioned structure, the card slot 120 can be shaped like a dovetail along its extension direction. That is, the opening of the card slot 120 is at its widest point, and the width of the card slot 120 decreases towards the interior. This dovetail-shaped card slot 120 effectively restricts the positioning card 321. When the positioning card 321 is inserted into the card slot 120, the inclined surface of the slot wall in the width direction of the card slot 120 forms a wedge-shaped fit. The movement of the positioning card 321 along the insertion direction is converted into a clamping force perpendicular to the insertion direction by the friction of the inclined surface, generating a self-locking effect. This ensures that the positioning card 321 is firmly located in the card slot 120, thereby preventing the positioning card 321 from falling out of the card slot 120.

[0038] In other examples, the card slot 120 can also be other shapes, such as a V-shaped structure, a triangular structure, etc. Alternatively, the card slot 120 can be a rectangular slot, and to prevent the card 321 from falling out of the card slot 120, it can be further limited by fastening screws or the like.

[0039] See also Figure 2 and Figure 3Optionally, the limiting card 321 includes an arc-shaped plate 3211 and an outer plate 3212, wherein the arc-shaped plate 3211 is the first part of the limiting card 321 and the outer plate 3212 is the second part of the limiting card 321.

[0040] The arc-shaped plate 3211 is located at one end of the axial direction of the skeleton body 11 and is in contact with the end face of the skeleton body 11. The center of the arc corresponding to the arc of the arc-shaped plate 3211 is located on the axis of the skeleton body 11. The outer side plate 3212 is located on the arc-shaped side of the arc-shaped plate 3211 and is in contact with the outer peripheral wall of the skeleton body 11.

[0041] In the above implementation, by setting the limiting card 321 as an arc-shaped plate 3211 and an outer plate 3212, the arc-shaped plate 3211 can be connected to the connector body 31, while providing an installation base for the outer plate 3212. Moreover, setting the arc-shaped plate 3211 as a structure concentric with the frame body 11 makes it easy to quickly position the connector 3 when it is installed on the frame 1, and prevents the connector 3 from protruding outside the frame 1 and affecting the arrangement of other structures.

[0042] The outer side plate 3212 is designed to be inserted into the slot 120 so as to cooperate with the slot 120 to achieve mutual engagement between the second positioning structure 32 and the first positioning structure 12.

[0043] Optionally, the first positioning structure 12 further includes a limiting hole 1200, which is located in the slot 120 and communicates with the slot 120. The extending direction of the limiting hole 1200 is the radial direction of the skeleton body 11.

[0044] The second positioning structure 32 also includes a limiting protrusion 322, which is located on the side of the outer plate 3212 facing the skeleton body 11 and is connected to the outer plate 3212. The limiting protrusion 322 is located inside the limiting hole 1200.

[0045] In the above implementation, a limiting hole 1200 is also provided in the first positioning structure 12, and a limiting protrusion 322 is also provided in the second positioning structure 32. This way, after the limiting protrusion 322 is inserted into the limiting hole 1200, the connection between the first positioning structure 12 and the second positioning structure 32 is further improved, and the two are prevented from separating.

[0046] Furthermore, by setting the limiting hole 1200 to extend radially along the skeleton body 11, it can cooperate with the slot 120, so that after the connector 3 is connected to the skeleton 1, it can limit the connector 3 in different directions, further improving the assembly firmness of the two.

[0047] In other examples, the limiting hole 1200 and the limiting protrusion 322 may also be other structures, such as the limiting card 321 and the skeleton body 11 being fastened together by radially arranged screws.

[0048] See Figure 2 and Figure 3 In this embodiment of the present disclosure, in order to further improve the assembly firmness between the first positioning structure 12 and the second positioning structure 32, there are two slots 120, and the two slots 120 are distributed at intervals along the circumference of the skeleton body 11.

[0049] There are two outer side plates 3212, which are spaced apart along the arc length of the arc plate 3211 and correspond one-to-one with the two slots 120. There are also two limiting holes 1200 and two limiting protrusions 322, with the two limiting holes 1200 corresponding to the two slots 120 and the two limiting protrusions 322 corresponding to the two outer side plates 3212.

[0050] See also Figure 3 Optionally, the connector body 31 includes a plurality of continuously connected connecting platforms 311, and the plurality of connecting platforms 311 form a plurality of continuously arranged steps on one side facing the axis of the frame body 11, and each step has a wiring hole 3110 for inserting a wiring terminal on its platform.

[0051] Each connecting platform 311 has multiple spaced wire holes 3120 on the side away from the axis of the frame body 11. The multiple wire holes 3120 correspond one-to-one with and are connected to the multiple wiring holes 3110. The axial direction of the wire holes 3120 is the same as the axial direction of the frame body 11.

[0052] In the above implementation, the arrangement of the steps allows the wiring holes 3110 to be staggered, thereby enabling the wiring terminals to be rationally arranged and easily inserted into the connector 3.

[0053] The arrangement of the wire hole 3120 allows the coil on the stator core to pass through and connect to the terminal inserted in the wiring hole 3110.

[0054] In this embodiment, there are three through holes 3120 and three terminal holes 3110. This allows the leads of the coils on the stator core to pass through the terminal holes 3110 and connect to the terminals inserted into the corresponding through holes 3120. The terminals are used to connect to the three-phase current of an external power supply.

[0055] Optionally, the connector 3 is an integrally injection-molded structural component. The connector 3 is an engineering plastic structural component. In this embodiment, the connector 3 is a nylon PA66 structural component.

[0056] In the above implementation, the connector 3 is made of nylon. The nylon material gives the connector 3 a certain degree of elasticity, allowing the second positioning structure 32 to deform and easily engage with the first positioning structure 12 during assembly. Furthermore, making the connector 3 of nylon ensures it acts as an insulator, preventing short circuits when the coil is connected to an external power source and improving the wiring safety of the coil.

[0057] In other examples, connector 3 may also be a PBT structural component formed by the condensation polymerization of terephthalic acid and butanediol.

[0058] See you again Figure 2 Optionally, the skeleton body 11 includes a main ring body 111, a plurality of connecting ribs 112 and a plurality of connecting pieces 113. The plurality of connecting pieces 113 are arranged at intervals along the circumference of the main ring body 111 inside the main ring body 111 and define an annular space with the main ring body 111.

[0059] Multiple connecting ribs 112 are spaced apart in the annular space along the circumference of the main ring body 111, and one end of each connecting rib 112 is connected to the inner wall of the main ring body 111, and the other end is connected to one of the connecting pieces 113. The connecting ribs 112 extend radially along the main ring body 111, and a receiving space 1120 is defined between two adjacent connecting ribs 112 for receiving the teeth of the end of the stator core.

[0060] In the above implementation, the skeleton body 11 is configured with the above structure, and the skeleton body 11 can be fitted onto the end of the stator core through the accommodating space 1120, which facilitates the assembly of the skeleton body 11 and the stator core.

[0061] Optionally, the main ring body 111 has multiple notches 1110 spaced circumferentially at one end away from the connecting rib 112. Each notch 1110 corresponds to one of the accommodating spaces 1120. The notches 1110 confine the coil and the coil-binding strip on the main ring body 111. The sidewall of the main ring body 111 also has multiple through holes 1111 for the coil to pass through. Each through hole 1111 is located between two adjacent notches 1110.

[0062] In addition, in order to facilitate the arrangement of the first positioning structure 12 on the skeleton body 11, two connecting blocks 114 are provided on the outer peripheral wall of the main ring body 111 located between two adjacent notches 1110. Each connecting block 114 is provided with a slot 120 and a limiting hole 1200.

[0063] Optionally, the skeleton 1 is a one-piece molded structural component.

[0064] In the above implementation, the skeleton 1 is an integrally formed structural component, so that the first positioning structure 12 can be processed at the same time as the skeleton 1, thereby improving processing efficiency. At the same time, the first positioning structure 12 can be firmly assembled onto the skeleton body 11.

[0065] In this embodiment, the frame 1 is also an engineering plastic structural component (such as nylon PA66, PBT formed by the condensation of terephthalic acid and butanediol). This can further prevent short circuits when the coil is connected to an external power source, thus improving the wiring safety of the coil.

[0066] The following is a brief introduction to the usage process of the coil frame provided in the embodiments of this disclosure:

[0067] First, the connector body 31 is inserted into the corresponding frame body 11 via the first positioning structure 12 and the second positioning structure 32. Then, the lead wire of the coil is passed through the wire hole 3120 of the connector 3 and positioned in the corresponding wiring hole 3110. The wiring terminal is then inserted into the wiring hole 3110 of the connector 3, and the wiring terminal is connected to the lead wire of the corresponding coil. This completes the assembly of the motor stator.

[0068] In the coil frame described above, the connector 3 can be fixed to the frame 1 through the cooperation between the limiting hole 1200 and the slot 120 added to the frame body 11 and the limiting card 321 and limiting protrusion 322 added to the connector body 31, achieving precise positioning and rapid installation. Furthermore, no additional parts are needed to fix the connector 3 in the above coil frame; simply adding a positioning structure to the original frame body 11 and connector body 31 achieves the purpose of fixation and rapid installation. At the same time, the manufacturing process of the frame 1 and connector 3 is simple. During installation, the connector 3 only needs to be aligned with the slot 120 for direct installation, reducing operational difficulty, improving production efficiency, and achieving precise positioning.

[0069] On the other hand, this disclosure also provides an electric motor, which includes a stator core, a rotor, and a coil frame. The rotor is located inside the stator core, and the coil frame is sleeved on one end of the stator core in the axial direction and connected to the stator core. The coil frame is the coil frame described above.

[0070] The above motors have the same beneficial effects as the aforementioned coil frame, which will not be repeated here.

[0071] The above are merely optional embodiments of this disclosure and are not intended to limit this disclosure. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this disclosure should be included within the protection scope of this disclosure.

Claims

1. A coil frame for a motor stator, characterized in that, The coil frame includes a frame (1) and a connector (3). The frame (1) includes a frame body (11) and a first positioning structure (12). The first positioning structure (12) is located on the outer peripheral wall of the frame body (11) and connected to the frame body (11). The connector (3) includes a connector body (31) and a second positioning structure (32). The connector body (31) is located on one end face of the axial direction of the skeleton body (11). The second positioning structure (32) is located on one side of the connector body (31). The second positioning structure (32) is connected to the connector body (31) and engages with the first positioning structure (12).

2. The coil frame according to claim 1, characterized in that, The first positioning structure (12) includes a slot (120) that extends from one end of the skeleton body (11) to the middle of the skeleton body (11) along the axial direction of the skeleton body (11). The second positioning structure (32) includes a limiting card (321), the first part of which is connected to the plug body (31), and the second part of which is located in the card slot (120).

3. The coil frame according to claim 2, characterized in that, Along the extending direction of the slot (120), the width of the slot (120) gradually decreases, and the width direction of the slot (120) is the circumferential direction of the skeleton body (11).

4. The coil frame according to claim 2, characterized in that, The limiting card (321) includes an arc-shaped plate (3211) and an outer plate (3212), wherein the arc-shaped plate (3211) is the first part of the limiting card (321), and the outer plate (3212) is the second part of the limiting card (321); The arc-shaped plate (3211) is located at one end of the axial direction of the skeleton body (11) and is in contact with the end face of the skeleton body (11); The outer side plate (3212) is located on the arc-shaped side of the arc plate (3211) and is in contact with the outer peripheral wall of the skeleton body (11).

5. The coil frame according to claim 4, characterized in that, The first positioning structure (12) further includes a limiting hole (1200), which is located in the slot (120) and communicates with the slot (120). The extending direction of the limiting hole (1200) is the radial direction of the skeleton body (11). The second positioning structure (32) further includes a limiting protrusion (322), which is located on the side of the outer plate (3212) facing the skeleton body (11) and connected to the outer plate (3212). The limiting protrusion (322) is located inside the limiting hole (1200).

6. The coil frame according to claim 5, characterized in that, There are two slots (120), and the two slots (120) are distributed at intervals along the circumference of the skeleton body (11); There are two outer side plates (3212), which are distributed at intervals along the arc length direction of the arc plate (3211) and correspond one-to-one with the two slots (120).

7. The coil frame according to any one of claims 1-6, characterized in that, The connector body (31) includes a plurality of continuously connected connecting platforms (311), and the plurality of connecting platforms (311) form a plurality of continuously arranged steps on one side facing the axis of the skeleton body (11), and each step has a wiring hole (3110) for inserting a wiring terminal on its platform. Each of the connecting platforms (311) has a plurality of spaced wire holes (3120) on the side away from the axis of the skeleton body (11). The plurality of wire holes (3120) correspond one-to-one with and are connected to the plurality of wiring holes (3110). The axial direction of the wire holes (3120) is the same as the axial direction of the skeleton body (11).

8. The coil frame according to any one of claims 1-6, characterized in that, The connector (3) is an integrally formed structural component.

9. The coil frame according to any one of claims 1-6, characterized in that, The skeleton body (11) includes a main ring body (111), a plurality of connecting ribs (112) and a plurality of connecting pieces (113). The plurality of connecting pieces (113) are arranged at intervals along the circumference of the main ring body (111) inside the main ring body (111) and define an annular space with the main ring body (111). The plurality of connecting ribs (112) are spaced apart circumferentially in the annular space along the main ring body (111), and one end of each connecting rib (112) is connected to the inner wall of the main ring body (111), and the other end is connected to one of the connecting pieces (113). The connecting ribs (112) extend radially along the main ring body (111), and a receiving space (1120) for receiving the end of the stator core is defined between two adjacent connecting ribs (112).

10. An electric motor, characterized in that, The motor includes a stator core, a rotor, and a coil frame. The rotor is located inside the stator core, and the coil frame is sleeved on one end of the stator core along its axial direction and connected to the stator core. The coil frame is the coil frame according to any one of claims 1-9.

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