A coil former structure for a motor stator and a motor assembly

Abstract

The utility model provides a kind of coil framework structure for motor stator and motor assembly, the plug-in structure is formed with several for the clamping groove of clamping enameled wire, several The clamping groove is spaced distribution along the circumferential direction of the framework body;The plug-in structure is formed with several bosses away from the framework body center one side, several The boss is located at the groove bottom position of several The clamping groove corresponds, the clamping groove for clamping enameled wire is formed on the boss;When enameled wire is clamped in the groove bottom position of the clamping groove, the part enameled wire extending to the outside of the clamping groove is clamped in the clamping groove;The utility model can ensure that the part enameled wire is connected together with the clamping groove of boss when cutting the part enameled wire extending to the outside of the clamping groove, by twisting enameled wire, before cutting by gripper grabbing, realize automatic collection, avoid regular stop cleaning, improve production efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of compressor technology, specifically relating to a coil frame structure for motor stator and a motor assembly. Background Technology

[0002] Currently, variable frequency rotary compressors mainly use direct-wound motors, with a resin coil frame installed at each of the upper and lower ends of the stator. To achieve automation and labor-saving in manufacturing, a plug-in structure for securing enameled wire is provided on the upper coil frame of the stator. This plug-in structure typically includes a locking groove for securing the enameled wire; a mating terminal for limiting the movement of the enameled wire and conducting independent enameled wires at their collinear ends; and a boss on the outer periphery of the locking groove for supporting the force when cutting excess enameled wire around the groove, preventing the wire from stretching, deforming, or becoming uncut. The boss on the outer periphery of the locking groove usually makes line or surface contact with the enameled wire but does not have a locking function; it is also simultaneously cut off from the locking groove when excess enameled wire is removed.

[0003] The above technologies currently have the following shortcomings: like Figure 1 As shown, when the enameled wire is cut, the outer peripheral boss 220 of the snap-fit ​​groove is also cut off and separated from the enameled wire. It then splashes to various places on the equipment table, resulting in the cut enameled wire and the outer peripheral boss 220 of the snap-fit ​​groove scattered all over the equipment table. In subsequent production, it is easy to enter the stator or the equipment, causing production defects. Therefore, it is necessary to stop the machine regularly for cleaning, which affects production efficiency. Moreover, because the snap-fit ​​groove boss 220 is small in size, it is difficult to collect with equipment and cleaning is very difficult. like Figure 2 As shown, in order to reduce the cleaning frequency, multiple independent snap-fit ​​groove outer peripheral bosses 220 are designed to be connected into one, and excess enameled wire is twisted together in advance. However, after the enameled wire and snap-fit ​​groove outer peripheral bosses 220 are separated, they still splash to various places on the equipment table, making it impossible to achieve automatic collection by the equipment and affecting production efficiency. Summary of the Invention

[0004] To address the shortcomings of the prior art, this utility model provides a coil frame structure for a motor stator and a motor assembly. When cutting off a portion of the enameled wire extending outside the snap-fit ​​groove, it ensures that the portion of the enameled wire is connected to the clamping groove of the boss. By twisting the enameled wire, it is gripped by the grippers before cutting, achieving automatic collection, avoiding timed shutdowns for cleaning, and improving production efficiency.

[0005] The technical effects to be achieved by this utility model are realized through the following technical aspects: This utility model provides a coil frame structure for motor stator, including a frame body, and an insertion structure is provided on the outer peripheral surface of the frame body; The plug-in structure has a plurality of snap-fit ​​grooves for snapping in enameled wires, and the plurality of snap-fit ​​grooves are spaced apart along the circumferential direction of the skeleton body. The plug-in structure has a plurality of protrusions on the side away from the center of the skeleton body. The plurality of protrusions are located at the bottom of the plurality of snap-fit ​​grooves. Clamping grooves for clamping enameled wires are formed on the protrusions. When the enameled wire is snapped into the bottom of the snap-fit ​​groove, the portion of the enameled wire extending outside the snap-fit ​​groove is clamped in the clamping groove.

[0006] In some implementations, the clamping groove is a rectangular groove with equal width at the top and bottom along the axial direction of the skeleton body. The rectangular groove has the advantages of being easy to manufacture and having a good effect on fixing the enameled wire.

[0007] In some implementations, the clamping groove includes a first clamping arm and a second clamping arm disposed opposite to each other; The first clamping arm has a first bevel angle at one end near the opening of the clamping groove, and the second clamping arm has a second bevel angle at one end near the opening of the clamping groove. The first and second bevel angles can guide the enameled wire into the clamping groove.

[0008] In some implementations, the distance between the first clamping arm and the second clamping arm is less than the diameter of the enameled wire, and the height of the first clamping arm and the second clamping arm is greater than the diameter of the enameled wire, ensuring the clamping effect of the rectangular groove on the enameled wire and ensuring that the cut portion of the enameled wire is connected to the boss, facilitating automated collection.

[0009] In some implementations, the clamping groove is a trapezoidal groove that is wider at the top and narrower at the bottom along the axial direction of the skeleton body. The trapezoidal groove has the advantages of being easy to manufacture and providing a smoother pressing and clamping operation for the enameled wire.

[0010] In some implementations, the minimum width of the trapezoidal groove is less than the diameter of the enameled wire, and the height of the trapezoidal groove is greater than the diameter of the enameled wire, to ensure the clamping effect of the trapezoidal groove on the enameled wire and to ensure that the cut portion of the enameled wire is connected to the boss, facilitating automated collection.

[0011] In some implementations, the clamping groove is an arc-shaped groove along the axial direction of the skeleton body. The arc-shaped groove has the advantages of good fixation of the enameled wire and smoother pressing and clamping operation of the enameled wire.

[0012] In some implementations, the snap-fit ​​groove is connected to the clamping groove on the corresponding boss to ensure the fixation of the enameled wire.

[0013] In some implementations, several of the bosses are connected to form an integral structure, further ensuring that the cut-off portion of the enameled wire is connected to the bosses, facilitating automated collection.

[0014] On the other hand, this application provides a motor assembly including a stator core and a coil frame structure as described in any of the above claims; The frame body is connected to the upper end face of the stator core.

[0015] In summary, this utility model has at least the following advantages: 1. This utility model provides a coil frame structure for a motor stator, which is provided with a snap-fit ​​groove to snap and fix the enameled wire, and a boss to support the enameled wire during cutting. The clamping groove on the boss can clamp the enameled wire extending outside the snap-fit ​​groove, so that when the part of the enameled wire extending outside the snap-fit ​​groove is cut, it can be ensured that the part of the enameled wire is connected to the clamping groove of the boss. After the enameled wire is twisted, it is gripped by the gripper before cutting. After cutting, the gripper automatically collects the cut enameled wire and the boss, avoiding timed shutdown for cleaning and improving production efficiency.

[0016] 2. The motor assembly provided by this utility model, after applying the above-mentioned coil frame structure, can effectively improve production efficiency. Attached Figure Description

[0017] Figure 1 This refers to a coil frame structure mentioned in the background section; Figure 2 This is another coil frame structure mentioned in the background art; Figure 3 This is a schematic diagram of the skeleton body provided in Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of the rectangular groove provided in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the trapezoidal groove provided in Embodiment 1 of this utility model; Figure 6 This is a schematic diagram of the arc-shaped groove provided in Embodiment 1 of this utility model; Figure 7 This is a schematic diagram of the skeleton body provided in Embodiment 2 of this utility model; Figure 8 for Figure 7 Enlarged view of section A; Figure 9 A schematic diagram of the motor assembly provided in Embodiment 3 of this utility model; Marked in the image: 100. Skeleton body; 200, plug-in structure; 210, snap-fit ​​groove; 220, boss; 221, clamping groove; 2211, first clamping arm; 2211a, first bevel angle; 2212, second clamping arm; 2212a, second bevel angle; 300. Stator core. Detailed Implementation

[0018] To facilitate understanding of the present invention, a more comprehensive description will be given below in conjunction with the accompanying drawings and specific embodiments. The drawings illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0019] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0020] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Example 1: Please see Figures 3-6 A coil frame structure for motor stator includes a frame body 100, and a plug-in structure 200 is provided on the outer peripheral surface of the frame body 100; the plug-in structure 200 has a plurality of snap-in grooves 210 for snapping in enameled wire, and the plurality of snap-in grooves 210 are spaced apart along the circumferential direction of the frame body 100.

[0023] Typically, there are two types of lead wires on the stator: one is led out by a flexible wire, and the other is led out by a plug-in structure 200 on the frame body 100. In this example, the lead wire led out by the plug-in structure 200 on the frame body 100 is used. There are 3 enameled wires, and correspondingly, there are 3 snap-fit ​​slots 210 distributed at intervals along the circumferential direction of the frame body 100 on the plug-in structure 200. The 3 snap-fit ​​slots 210 correspond to the snap-fit ​​of the 3 enameled wires.

[0024] In practical applications, one end of the enameled wire is positioned above the snap-fit ​​groove 210, and the enameled wire is snapped downwards along the opening of the snap-fit ​​groove 210, which facilitates the snap-fit ​​operation of the enameled wire and improves the ease of operation.

[0025] The plug-in structure 200 has a plurality of protrusions 220 on the side away from the center of the skeleton body 100. The plurality of protrusions 220 are located at the bottom of the plurality of snap-fit ​​grooves 210. The protrusions 220 have clamping grooves 221 for clamping the enameled wire.

[0026] Specifically, along the radial direction of the skeleton body 100, the snap-fit ​​groove 210 and the boss 220 are distributed sequentially, while along the axial direction of the skeleton body 100, the boss 220 corresponds to the bottom position of the snap-fit ​​groove 210. The boss 220 can support the part of the enameled wire extending outside the snap-fit ​​groove 210, which facilitates the cutting of this part of the enameled wire. The clamping groove 221 formed on the boss 220 can clamp this part of the enameled wire.

[0027] In application, one end of the enameled wire is positioned above the snap-fit ​​groove 210 and the clamping groove 221, and the length of the enameled wire above the snap-fit ​​groove 210 and the clamping groove 221 is ensured to be greater than the length of the snap-fit ​​groove 210 and the clamping groove 221 in the radial direction along the skeleton body 100. That is, it is ensured that the end of the enameled wire can extend to the outside of the clamping groove 221, and that the end of the enameled wire can be clamped, and the enameled wire is snapped and clamped downward along the opening of the snap-fit ​​groove 210 and the clamping groove 221.

[0028] When the enameled wire is snapped into the bottom of the snap-fit ​​groove 210, the portion of the enameled wire extending outside the snap-fit ​​groove 210 is clamped in the clamping groove 221, and the end of the enameled wire extends outside the clamping groove 221.

[0029] When cutting off the enameled wire outside the snap-fit ​​groove 210, the boss 220 is actually cut off together. To avoid the cut enameled wire and boss 220 affecting the working environment, an automated device with grippers can be used to grab the end of the enameled wire before cutting. After cutting, the clamping groove 221 on the boss 220 clamps the enameled wire, thus ensuring that the boss 220 and the enameled wire are connected together. This allows the cut enameled wire and the boss 220 to be recovered together by an automated device, achieving a cleaning process without stopping the machine and effectively improving efficiency.

[0030] like Figure 4 As shown, in some embodiments, along the axial direction of the skeleton body 100, the clamping groove 221 is a rectangular groove with equal width at the top and bottom. The rectangular groove has the advantages of being easy to manufacture and having a good effect on fixing the enameled wire.

[0031] Furthermore, the clamping groove 221 includes a first clamping arm 2211 and a second clamping arm 2212 arranged opposite to each other. The first clamping arm 2211 and the second clamping arm 2212 are spaced apart by a certain distance, which is set to accommodate the enameled wire and clamp the enameled wire through the first clamping arm 2211 and the second clamping arm 2212.

[0032] A first bevel 2211a is formed at one end of the first clamping arm 2211 near the opening of the clamping groove 221, and a second bevel 2212a is formed at one end of the second clamping arm 2212 near the opening of the clamping groove 221. The first bevel 2211a and the second bevel 2212a form an open shape, which can guide the enameled wire into the clamping groove 221. At the same time, the open shape design has the effects of convenient assembly, high stability in use and strong snap-fit ​​versatility.

[0033] The open-shaped design makes it easier for larger diameter enameled wires to gradually move towards the lower end of the snap-fit ​​groove 210 during snap-fitting. For smaller diameter enameled wires, the open shape can also guide the snap-fitting process, thus achieving advantages such as convenient assembly.

[0034] The distance between the first clamping arm 2211 and the second clamping arm 2212 is less than the diameter of the enameled wire, and the height of the first clamping arm 2211 and the second clamping arm 2212 is greater than the diameter of the enameled wire. This limitation can ensure the clamping effect of the rectangular groove on the enameled wire and ensure that the part of the enameled wire is connected to the boss 220 after being cut, which is convenient for automated collection.

[0035] Typically, the enameled wire has an outer sheath layer with a certain degree of elasticity. Since the distance between the first clamping arm 2211 and the second clamping arm 2212 is less than the diameter of the enameled wire, the enameled wire will be subjected to a certain amount of compression when it is clamped between the first clamping arm 2211 and the second clamping arm 2212, thereby ensuring that the enameled wire is clamped in the clamping groove 221. At the same time, the height of the first clamping arm 2211 and the second clamping arm 2212 is greater than the diameter of the enameled wire, ensuring that the enameled wire can be accommodated in the clamping groove 221 and will not be exposed outside the clamping groove 221 and easily loosen from the clamping groove 221.

[0036] like Figure 5 As shown, in some embodiments, along the axial direction of the skeleton body 100, the clamping groove 221 is a trapezoidal groove that is wider at the top and narrower at the bottom. The trapezoidal groove has the advantages of being easy to manufacture and providing a smoother pressing and clamping operation for the enameled wire.

[0037] Furthermore, the minimum width of the trapezoidal groove is less than the diameter of the enameled wire, and the height of the trapezoidal groove is greater than the diameter of the enameled wire. This limitation ensures the clamping effect of the trapezoidal groove on the enameled wire, ensuring that the cut portion of the enameled wire is connected to the boss 220, facilitating automated collection.

[0038] To further ensure the clamping effect on the enameled wire, the minimum width of the trapezoidal groove can be extended upwards to a certain height, and this height is greater than the diameter of the enameled wire.

[0039] like Figure 6 As shown, in some embodiments, the clamping groove 221 is an arc-shaped groove along the axial direction of the skeleton body 100. The arc-shaped groove has the advantages of good fixation of the enameled wire and smoother pressing and clamping operation of the enameled wire.

[0040] Understandably, the clamping groove 221 can be designed as a rectangular groove, a trapezoidal groove, or an arc-shaped groove. Of course, it can also be a combination of a rectangular groove and a trapezoidal groove, or a combination of a rectangular groove and an arc-shaped groove, etc. That is, the specific shape of the clamping groove 221 can be adjusted according to actual needs.

[0041] This embodiment provides a coil frame structure for a motor stator, which includes a snap-fit ​​groove 210 for snapping and fixing the enameled wire, and a boss 220 for supporting the enameled wire during cutting. The clamping groove 221 on the boss 220 can clamp the enameled wire extending outside the snap-fit ​​groove 210, ensuring that when the portion of the enameled wire extending outside the snap-fit ​​groove 210 is cut, this portion of the enameled wire is connected to the clamping groove 221 of the boss 220. The enameled wire is twisted and gripped by the grippers before cutting. After cutting, the grippers automatically collect the cut enameled wire and the boss 220, avoiding timed shutdowns for cleaning and improving production efficiency.

[0042] Example 2: This embodiment makes further structural optimizations based on Embodiment 1. Please refer to... Figures 3-6 Based on the above, refer to Figure 7 and Figure 8 .

[0043] In this embodiment, the snap-fit ​​groove 210 is connected to the clamping groove 221 on the corresponding boss 220 to ensure the fixing effect of the enameled wire.

[0044] In some examples, the snap-fit ​​groove 210 and the clamping groove 221 on the corresponding boss 220 may not be connected, but there may be a certain gap, and the gap should be greater than the thickness of the cutting blade, so as to facilitate the smooth cutting of the enameled wire and the boss 220.

[0045] In some embodiments, several bosses 220 are connected to form an integral structure, further ensuring that the cut-off portion of the enameled wire is connected to the bosses 220, facilitating automated collection.

[0046] Example 3: This embodiment has undergone further structural optimization based on embodiment 1 or 2. Please refer to... Figures 3-8 Based on the above, refer to Figure 9 .

[0047] This embodiment provides a motor assembly, including a stator core 300 and the aforementioned coil frame structure; the frame body 100 is connected to the upper end face of the stator core 300 to facilitate the snapping of the enameled wires.

[0048] Typically, the frame body 100 includes an annular outer shell and multiple sub-frames for winding stator windings. The sub-frames are spaced apart along the inner circumference of the annular outer shell, and the plug-in structure 200 is located on the outer circumference of the annular outer shell, suitable for the assembly requirements of motor components.

[0049] As can be seen, the stator core 300 is a hollow ring structure. Multiple stator teeth are distributed at intervals on the inner circumference of the stator core 300. A stator slot is defined between two adjacent stator teeth. The number and distribution position of the sub-frames match the stator teeth so that the stator windings can be wound on the sub-frames.

[0050] The plug-in structure 200 is located on the outer periphery of the annular shell and is integrally formed with the annular shell. The upper end of the plug-in structure 200 extends beyond the upper end of the annular shell to facilitate the insertion of terminals. When snapping the enameled wire, the plug-in structure 200 facilitates the lead-out of the enameled wire from the skeleton body 100 and the stator core 300 through the snap-in groove 210. It also facilitates the connection of the boss 220 with the cut-off portion of the enameled wire through the clamping groove 221 on the boss 220 to achieve automated collection.

[0051] The motor assembly provided in this embodiment, after applying the above-mentioned coil frame structure, can effectively improve production efficiency.

[0052] The above description is merely an example and illustration of the structure of this invention, and while the description is specific and detailed, it should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these obvious substitutions all fall within the protection scope of this invention.

Claims

1. A coil frame structure for a motor stator, characterized in that, It includes a skeleton body (100), and the outer peripheral surface of the skeleton body (100) is provided with a plug-in structure (200). The plug-in structure (200) has a plurality of snap-fit ​​grooves (210) for snapping enameled wires, and the plurality of snap-fit ​​grooves (210) are spaced apart along the circumferential direction of the skeleton body (100). The plug structure (200) has a plurality of protrusions (220) formed on the side away from the center of the skeleton body (100). The plurality of protrusions (220) are located at the bottom of the plurality of snap-fit ​​grooves (210). The protrusions (220) have clamping grooves (221) for clamping the enameled wire. When the enameled wire is snapped into the bottom of the snap-fit ​​groove (210), the portion of the enameled wire extending outside the snap-fit ​​groove (210) is clamped into the clamping groove (221).

2. The coil frame structure for motor stator according to claim 1, characterized in that, Along the axial direction of the skeleton body (100), the clamping groove (221) is a rectangular groove with equal width at the top and bottom.

3. The coil frame structure for motor stator according to claim 2, characterized in that, The clamping groove (221) includes a first clamping arm (2211) and a second clamping arm (2212) disposed opposite to each other. The first clamping arm (2211) has a first bevel angle (2211a) at one end near the opening of the clamping groove (221), and the second clamping arm (2212) has a second bevel angle (2212a) at one end near the opening of the clamping groove (221).

4. The coil frame structure for motor stator according to claim 3, characterized in that, The distance between the first clamping arm (2211) and the second clamping arm (2212) is less than the diameter of the enameled wire, and the height of the first clamping arm (2211) and the second clamping arm (2212) is greater than the diameter of the enameled wire.

5. The coil frame structure for motor stator according to claim 1, characterized in that, Along the axial direction of the skeleton body (100), the clamping groove (221) is a trapezoidal groove that is wider at the top and narrower at the bottom.

6. The coil frame structure for motor stator according to claim 5, characterized in that, The minimum width of the trapezoidal groove is less than the diameter of the enameled wire, and the height of the trapezoidal groove is greater than the diameter of the enameled wire.

7. The coil frame structure for motor stator according to claim 1, characterized in that, Along the axial direction of the skeleton body (100), the clamping groove (221) is an arc-shaped groove.

8. The motor stator coil frame structure according to any one of claims 1-7, characterized in that, The snap-fit ​​groove (210) is connected to the clamping groove (221) on the corresponding boss (220).

9. The motor stator coil frame structure according to any one of claims 1-7, characterized in that, Several of the aforementioned bosses (220) are connected to form an integral structure.

10. A motor assembly, characterized in that, Includes a stator core (300) and a coil frame structure as described in any one of claims 1-9; The skeleton body (100) is connected to the upper end face of the stator core (300).

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