Reel of motor stator core

Abstract

The utility model relates to a winding frame of a motor stator core, which comprises an upper winding ring and a lower winding ring, a plurality of upper winding reels and a plurality of upper plugging holes are annularly arranged on the upper winding ring at intervals, and a plurality of lower winding reels and a plurality of lower plugging holes are annularly arranged on the lower winding ring. A lower positioning boss is arranged on the inner side wall of the lower inserting hole in the circumferential direction of the lower inserting hole, the lower end of the upper winding reel is inserted into the lower inserting hole and abuts against the lower positioning boss, and an upper positioning boss is arranged on the inner side wall of the upper inserting hole in the circumferential direction of the upper inserting hole. According to the utility model, the upper winding reel and the lower winding reel can be inserted into the two winding grooves of the motor stator iron core in a staggered manner, and are respectively inserted into the lower insertion hole and the upper insertion hole, so that the two winding rings are inserted oppositely, and compared with the conventional winding frame with two layers of thick walls, the winding reel of the winding frame is only provided with one layer of thick wall, so that the cost is reduced. Therefore, the thickness of the winding reel is small, the number of winding turns of the winding reel is large, and the slot fullness rate is high.

Description

Technical Field

[0001] This utility model relates to the technical field of motor stator cores, and in particular to a winding frame for motor stator cores. Background Technology

[0002] The existing structure of the motor stator core winding frame is as follows: a novel motor winding frame disclosed in Chinese Patent Publication No. CN222484414U on February 14, 2025, includes a winding device; the winding device includes an upper winding part and a lower winding part, which are sleeved and fixed; multiple first connecting posts are arranged in a ring at intervals on the upper winding part, and multiple second connecting posts adapted to the first connecting posts are arranged on the lower winding part, with the multiple first connecting posts and multiple second connecting posts movably sleeved. However, the above-mentioned motor winding frame has the following problems: (1) After the first connecting posts and the second connecting posts are sleeved on the stator core, there are two layers of connecting post wall thickness. Due to the increase in the wall thickness of the connecting posts, the number of turns of copper wire winding in the winding slot of the stator core is small, and the slot fill factor is low (the slot fill factor refers to the proportion of space occupied in the slot after the coil is placed in the slot). The low slot fill factor will lead to a decrease in the output power of the motor. (2) The structure of the above-mentioned winding frame is complex and the cost is high. Therefore, the structure of the existing motor winding frame needs to be further improved. Utility Model Content

[0003] The purpose of this utility model is to provide a winding frame for motor stator cores that is simple in structure, low in cost, has a high slot fill factor, and can improve motor performance.

[0004] The purpose of this utility model is achieved as follows:

[0005] A winding frame for a motor stator core includes an upper winding ring and a lower winding ring, which are respectively installed at both ends of the motor stator core. The upper winding ring has a plurality of upper winding cylinders and a plurality of upper insertion holes arranged in annular intervals. The plurality of upper insertion holes and the plurality of upper winding cylinders are arranged alternately on the upper winding ring. The lower winding ring has a plurality of lower winding cylinders and a plurality of lower insertion holes arranged in annular intervals. The plurality of lower insertion holes and the plurality of lower winding cylinders are arranged alternately on the lower winding ring. The inner sidewall of the lower insertion hole is provided with a lower positioning boss along the circumference of the lower insertion hole. The lower end of the upper winding cylinder is inserted into the lower insertion hole and abuts against the lower positioning boss. The inner sidewall of the upper insertion hole is provided with an upper positioning boss along the circumference of the upper insertion hole. The upper end of the lower winding cylinder is inserted into the upper insertion hole and abuts against the upper positioning boss. This invention features an upper winding cylinder, an upper insertion hole, a lower insertion hole, and a lower winding cylinder, all set on the upper and lower winding rings respectively. These upper and lower winding cylinders can be inserted into the two winding slots of the motor stator core, respectively, and align with the lower and upper insertion holes, thus achieving interlocking of the two winding rings. Compared to existing winding frames with two-layer walls, the winding cylinder of this invention has only one-layer wall thickness, resulting in a thinner winding cylinder, a higher number of winding turns, and a higher slot fill factor. Furthermore, the upper and lower positioning bosses respectively position the upper and lower ends of the lower and upper winding cylinders, ensuring a secure and stable interlocking of the upper and lower winding rings.

[0006] The present invention can be further improved in the following ways.

[0007] The shape and size of the lower insertion hole are compatible with the shape and size of the upper winding spool, and the shape and size of the upper insertion hole are compatible with the shape and size of the lower winding spool. Therefore, the upper and lower winding rings of this invention are securely and stably connected.

[0008] The lower positioning boss has an upwardly extending lower retaining plate, which is spaced apart from the inner wall of the lower insertion hole to form a lower retaining groove. The lower end of the upper winding bobbin is inserted into the lower retaining groove. The upper positioning boss has a downwardly extending upper retaining plate, which is spaced apart from the inner wall of the upper insertion hole to form an upper retaining groove. The upper end of the lower winding bobbin is inserted into the lower retaining groove. The retaining plate can hold the winding bobbin in place, thus achieving positioning. Therefore, the upper and lower winding rings of this invention are securely and stably interlocked.

[0009] The gap between the lower clamping plate and the inner wall of the lower insertion hole is less than the wall thickness of the upper winding drum, and the gap between the upper clamping plate and the inner wall of the lower insertion hole is less than the wall thickness of the lower winding drum, so that the lower clamping plate can hold the lower end of the upper winding drum and the upper clamping plate can hold the upper end of the lower winding drum.

[0010] The lower winding ring, lower insertion hole, lower winding cylinder, lower positioning boss, and lower clamping plate are integrally formed, as are the upper winding ring, upper insertion hole, upper winding cylinder, upper positioning boss, and upper clamping plate. Therefore, this utility model has a simple structure, is easy to produce, and has low cost.

[0011] The beneficial effects of this utility model are as follows:

[0012] (1) This utility model has an upper winding cylinder, an upper insertion hole, a lower insertion hole, and a lower winding cylinder that are staggered on the upper winding ring and the lower winding ring. The upper winding cylinder and the lower winding cylinder of this utility model can be staggered and inserted into the two winding slots of the stator core of the motor, and respectively inserted into the lower insertion hole and the upper insertion hole, thereby realizing the insertion of the two winding rings. Compared with the existing winding frame with two layers of wall thickness, the winding cylinder of the winding frame of this utility model has only one layer of wall thickness. Therefore, the winding cylinder of this utility model is thin, the winding turns of this utility model are more and the slot fill factor is higher, which can improve the performance of the motor.

[0013] (2) Compared with the prior art, the number of upper and lower winding bobbins of this utility model is less. Therefore, the upper and lower winding rings of this utility model have simple structure, low cost and are easy to process. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the winding frame of this utility model installed on the stator core of the motor.

[0015] Figure 2 This is an exploded view of the motor stator core of this utility model.

[0016] Figure 3 This is a schematic diagram of the winding frame for the stator core of the motor according to this utility model.

[0017] Figure 4 This is a schematic diagram of the winding frame of the motor stator core of this utility model from another angle.

[0018] Figure 5 This is an exploded view of the winding frame for the stator core of the motor according to this utility model.

[0019] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0020] Figure 7 This is a top view of the lower winding loop of this utility model.

[0021] Figure 8 This is a schematic diagram of the upper winding loop of this utility model.

[0022] Figure 9 This is a top view of the upper winding loop of this utility model. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Example 1, as Figures 1 to 9 As shown, a motor stator core 3 has winding frames installed at both ends. The winding frames include an upper winding ring 1 and a lower winding ring 2, which are respectively installed at both ends of the stator core 3. The stator core 3 has a plurality of winding slots 31 arranged in annular intervals. The upper winding ring 1 has a plurality of upper winding cylinders 11 and a plurality of upper insertion holes 12 arranged in annular intervals. The plurality of upper insertion holes 12 and the plurality of upper winding cylinders 11 are alternately arranged on the upper winding ring 1. The lower winding ring 2 has a plurality of lower winding cylinders 21 and a plurality of lower insertion holes 22 arranged in annular intervals. The plurality of lower insertion holes 22 and the plurality of lower winding cylinders 21 are alternately arranged. A lower positioning boss 23 is provided on the inner wall of the lower insertion hole 22 along the circumference of the lower insertion hole 22, and the upper winding cylinder 11 and the lower winding cylinder 21 are staggered and inserted into the two ends of the stator core 3. The lower end of the upper winding cylinder 11 passes through a winding groove and is inserted into the lower insertion hole 22, and the lower end of the upper winding cylinder 11 abuts against the lower positioning boss 23. An upper positioning boss 13 is provided on the inner wall of the upper insertion hole 12 along the circumference of the upper insertion hole 12, and the upper end of the lower winding cylinder 21 passes through another winding groove and is inserted into the upper insertion hole 12, and the upper end of the lower winding cylinder 21 abuts against the upper positioning boss 13. The number of winding grooves 31 in this utility model is equal to the sum of the number of upper winding cylinders 11 and the number of lower winding cylinders 21.

[0025] This is a more specific technical solution of the present invention.

[0026] The upper winding ring 1 has upper insulating teeth 14 arranged between the adjacent upper winding cylinder 11 and the upper insertion hole 12; the lower winding ring 2 has lower insulating teeth 24 arranged between the adjacent lower winding cylinder 21 and the lower insertion hole 22.

[0027] The shape and size of the lower insertion hole 22 are adapted to the shape and size of the upper winding spool 11, and the shape and size of the upper insertion hole 12 are adapted to the shape and size of the lower winding spool 21. Therefore, the upper and lower winding rings of this invention are securely and stably connected.

[0028] The lower positioning boss 23 has an upwardly extending lower retaining plate 25, which is spaced apart from the inner wall of the lower insertion hole 22 to form a lower retaining groove 26. The lower end of the upper winding bobbin 11 is inserted into the lower retaining groove 26. The upper positioning boss 13 has a downwardly extending upper retaining plate 15, which is spaced apart from the inner wall of the upper insertion hole 12 to form an upper retaining groove 16. The upper end of the lower winding bobbin 21 is inserted into the lower retaining groove 26. With the upper end of the lower winding bobbin inserted into the lower retaining groove, the retaining plate can hold the winding bobbin in place, achieving positioning. Therefore, the upper and lower winding rings of this utility model are securely and stably interlocked.

[0029] The gap between the lower clamping plate 25 and the inner wall of the lower insertion hole 22 is less than the wall thickness of the upper winding drum 11, and the gap between the upper clamping plate 15 and the inner wall of the lower insertion hole 22 is less than the wall thickness of the lower winding drum 21, so that the lower clamping plate can hold the lower end of the upper winding drum and the upper clamping plate can hold the upper end of the lower winding drum.

[0030] The lower winding ring 2, lower insertion hole 22, lower winding cylinder 21, lower positioning boss 23, and lower clamping plate 25 are integrally formed, and the upper winding ring 1, upper insertion hole 12, upper winding cylinder 11, upper positioning boss 13, and upper clamping plate 15 are integrally formed. Therefore, this utility model has a simple structure, is easy to produce, and has low cost.

Claims

1. A winding frame for a motor stator core, comprising an upper winding ring (1) and a lower winding ring (2), wherein the upper winding ring (1) and the lower winding ring (2) are respectively installed at both ends of a motor stator core (3), characterized in that, The upper winding ring (1) is provided with multiple upper winding cylinders (11) and multiple upper insertion holes (12) arranged in annular intervals. The multiple upper insertion holes (12) and multiple upper winding cylinders (11) are arranged alternately on the upper winding ring (1). The lower winding ring (2) is provided with multiple lower winding cylinders (21) and multiple lower insertion holes (22) arranged in annular intervals. The multiple lower insertion holes (22) and multiple lower winding cylinders (21) are arranged alternately on the lower winding ring (2). The inner wall of the hole (22) is provided with a lower positioning boss (23) along the circumference of the lower insertion hole (22). The lower end of the upper winding bobbin (11) is inserted into the lower insertion hole (22) and abuts against the lower positioning boss (23). The inner wall of the upper insertion hole (12) is provided with an upper positioning boss (13) along the circumference of the upper insertion hole (12). The upper end of the lower winding bobbin (21) is inserted into the upper insertion hole (12) and abuts against the upper positioning boss (13).

2. The winding frame for the motor stator core according to claim 1, characterized in that, The shape and size of the lower insertion hole (22) are compatible with the shape and size of the upper winding spool (11), and the shape and size of the upper insertion hole (12) are compatible with the shape and size of the lower winding spool (21).

3. The winding frame for the motor stator core according to claim 1, characterized in that, The lower positioning boss (23) is provided with an upwardly extending lower clamping plate (25). The lower clamping plate (25) and the inner sidewall of the lower insertion hole (22) are spaced apart to form a lower clamping groove (26). The lower end of the upper winding bobbin (11) is inserted into the lower clamping groove (26). The upper positioning boss (13) is provided with a downwardly extending upper clamping plate (15). The upper clamping plate (15) and the inner sidewall of the upper insertion hole (12) are spaced apart to form an upper clamping groove (16). The upper end of the lower winding bobbin (21) is inserted into the lower clamping groove (26).

4. The winding frame for the motor stator core according to claim 3, characterized in that, The gap between the lower clamping plate (25) and the inner wall of the lower insertion hole (22) is less than the wall thickness of the upper winding bobbin (11), and the gap between the upper clamping plate (15) and the inner wall of the lower insertion hole (22) is less than the wall thickness of the lower winding bobbin (21).

5. The winding frame for the motor stator core according to claim 3, characterized in that, The lower winding ring (2), lower insertion hole (22), lower winding cylinder (21), lower positioning boss (23), and lower clamping plate (25) are integrally formed, and the upper winding ring (1), upper insertion hole (12), upper winding cylinder (11), upper positioning boss (13), and upper clamping plate (15) are integrally formed.

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