Splicing type stator coil holder structure

Abstract

The utility model relates to a spliced stator coil holder structure, which comprises a single chip which comprises an outer arc part, a connecting part and an inner arc part, one side of the outer arc part is provided with an embedding groove, and the other side of the outer arc part is provided with an embedding body; the coil holder single group comprises a front coil holder and a rear coil holder, the front coil holder comprises a first baffle part, a first insertion part and a second insertion part, and a first slot is formed between the first insertion part and the second insertion part; the rear wire frame comprises a second baffle part, a third insertion part and a fourth insertion part; a second slot is formed between the third insertion part and the fourth insertion part; the first baffle part and the second baffle part extend out of the single chip, the first insertion part and the third insertion part are in butt joint to form a first side groove, and the second insertion part and the fourth insertion part are in butt joint to form a second side groove; the embedding groove of one single chip is matched with the embedding body of another single chip in an embedded mode, the outer arc portions of the multiple single chips are spliced to form a ring shape, and the first side groove of one single coil holder set is communicated with the second side groove of another single coil holder set to form a coil groove.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a spliced ​​stator frame structure. Background Technology

[0002] Stator windings are designed to support the windings and provide the magnetic circuit. As motor technology develops towards higher efficiency, miniaturization, and higher power density, stator winding design faces many new challenges and opportunities. Existing stator windings generally adopt an integrated structure, which makes winding very inconvenient and results in significant waste if defective products are produced. Utility Model Content

[0003] In view of the above situation, it is necessary to propose a spliced ​​stator frame structure that is convenient for winding and has low cost.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a spliced ​​stator frame structure, comprising:

[0005] A single chip includes an outer arc portion, a connecting portion, and an inner arc portion. One end of the connecting portion is connected to the middle of the outer arc portion, and the other end is connected to the middle of the inner arc portion. A first groove is formed on one side of the connecting portion, and a second groove is formed on the other side. The outer arc portion and the inner arc portion are concentric. The outer arc portion has a groove on one side in the circumferential direction and an insert on the other side.

[0006] A single cable tray assembly includes a front cable tray and a rear cable tray. The front cable tray includes a first baffle, a first insertion part, and a second insertion part. The same end of the first insertion part and the second insertion part is connected to the first baffle. The first insertion part is adapted to one end of the first groove, and the second insertion part is adapted to one end of the second groove. A first slot adapted to one end of the connecting part is provided between the first insertion part and the second insertion part. The rear cable tray includes a second baffle, a third insertion part, and a fourth insertion part. The same end of the third insertion part and the fourth insertion part is connected to the second baffle. The third insertion part is adapted to the other end of the first groove, and the fourth insertion part is adapted to the other end of the second groove. A second slot adapted to the other end of the connecting part is provided between the third insertion part and the fourth insertion part.

[0007] The front line frame is inserted from one end of the chip wafer, and the rear line frame is inserted from the other end of the chip wafer. The first slot and the second slot are adapted to the connecting part. The first baffle part and the second baffle part both extend out of the chip wafer. The first insertion part and the third insertion part are connected to form a first side groove, and the second insertion part and the fourth insertion part are connected to form a second side groove.

[0008] The slot of the chip chip is nested with the inlay of another chip chip, and the outer arc portions of several chip chips are spliced ​​together to form a ring. The first side slot of the wireframe assembly is connected to the second side slot of another wireframe assembly to form a wire slot.

[0009] Furthermore, the first insertion part has a first overlapping part at its end, the second insertion part has a second overlapping part at its end, the third insertion part has a third overlapping part at its end, and the fourth insertion part has a fourth overlapping part at its end. The first overlapping part overlaps with the third overlapping part, and the second overlapping part overlaps with the fourth overlapping part.

[0010] Furthermore, the length of the first overlapping portion and / or the third overlapping portion is greater than the length of the overlapping portion of the first overlapping portion and the third overlapping portion, so that an overlap allowance is formed between the first overlapping portion and the third overlapping portion; the length of the second overlapping portion and / or the fourth overlapping portion is greater than the length of the overlapping portion of the second overlapping portion and the fourth overlapping portion, so that an overlap allowance is formed between the second overlapping portion and the fourth overlapping portion.

[0011] Furthermore, the first overlapping portion and the fourth overlapping portion are both outer sleeves, and the second overlapping portion and the third overlapping portion are both inner sleeves; or, the first overlapping portion and the fourth overlapping portion are both outer sleeves, and the second overlapping portion and the fourth overlapping portion are both inner sleeves.

[0012] Furthermore, the first overlapping portion and the second overlapping portion are both outer sleeves, and the third overlapping portion and the fourth overlapping portion are both inner sleeves; or, the first overlapping portion and the second overlapping portion are both inner sleeves, and the third overlapping portion and the fourth overlapping portion are both outer sleeves.

[0013] Furthermore, the first baffle portion includes a first outer arc extension portion and a first inner arc extension portion, and a front groove connecting the first side groove and the second side groove is provided between the first outer arc extension portion and the first inner arc extension portion; the second baffle portion includes a second outer arc extension portion and a second inner arc extension portion, and a rear groove connecting the first side groove and the second side groove is provided between the second outer arc extension portion and the second inner arc extension portion.

[0014] Furthermore, the end of the first outer arc extension facing the second outer arc extension protrudes in the thickness direction and abuts against the outer arc portion; the end of the second outer arc extension facing the first outer arc extension protrudes in the thickness direction and abuts against the outer arc portion; the end of the first inner arc extension facing the second inner arc extension protrudes in the thickness direction and abuts against the inner arc portion; and the end of the second inner arc extension facing the first inner arc extension protrudes in the thickness direction and abuts against the inner arc portion.

[0015] Furthermore, the protrusion height of the first outer arc extension in the thickness direction is less than the thickness of the outer arc, the protrusion height of the second outer arc extension in the thickness direction is less than the thickness of the outer arc, the protrusion height of the first inner arc extension in the thickness direction is less than the thickness of the inner arc, and the protrusion height of the second inner arc extension in the thickness direction is less than the thickness of the inner arc.

[0016] Furthermore, the ends of the first side groove and the second side groove near the outer arc portion are flush with the outer arc portion in the circumferential direction, and the ends of the first side groove and the second side groove near the inner arc portion extend beyond the inner arc portion in the circumferential direction.

[0017] Furthermore, the curvature of the inner arc portion is smaller than that of the outer arc portion, so that after several outer arc portions are spliced ​​into a ring, there is a gap between two adjacent inner arc portions.

[0018] The beneficial effects of this utility model are as follows: each chip has a groove on one side of its outer arc portion and an insert on the other side; several chip units are circumferentially spliced ​​to form a ring-shaped stator chip; each wire frame unit includes a front wire frame and a rear wire frame, with chip units inserted into the front and rear wire frames; adjacent wire frame units form grooves for windings to pass through. Both the stator chip and the stator wire frame are spliced, which can greatly reduce scrap and maintenance costs. Furthermore, when inserting the chip into the winding, it can be inserted into a single wire frame unit first, making winding convenient and simple. After winding, the chip units are spliced, thereby improving the efficiency of winding assembly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a spliced ​​stator frame structure according to an embodiment of the present invention;

[0020] Figure 2 This is an exploded structural diagram of a spliced ​​stator frame structure according to an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the assembly structure of a spliced ​​stator frame structure according to an embodiment of this utility model.

[0022] Label Explanation:

[0023] 100. Single chip; 110. Outer arc portion; 111. Insert slot; 112. Inlay; 113. Positioning slot;

[0024] 120. Connecting part; 130. Inner arc part; 140. First groove; 150. Second groove;

[0025] 200, Single wire frame assembly; 201, Front wire frame; 210, First baffle section; 211, First outer arc extension section;

[0026] 212. First inner arc extension; 213. Front groove; 220. First insertion part;

[0027] 221. First overlapping portion; 230. Second insertion portion; 231. Second overlapping portion; 240. First slot;

[0028] 202. Rear cable tray; 250. Second baffle section; 251. Second outer arc extension section;

[0029] 252. Second inner arc extension; 253. Rear groove; 260. Third insertion part;

[0030] 261. Third overlapping part; 270. Fourth insertion part; 271. Fourth overlapping part; 280. Second slot;

[0031] 291. First side slot; 292. Second side slot; 10. Stator chip; 20. Stator wire frame;

[0032] 21. Trough; 30. Winding. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description of a spliced ​​stator frame structure of this utility model is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this utility model and are not intended to limit its scope.

[0034] Please refer to Figures 1-3 A spliced ​​stator frame 20 structure includes:

[0035] Chip monolith 100 includes an outer arc portion 110, a connecting portion 120, and an inner arc portion 130. One end of the connecting portion 120 is connected to the middle of the outer arc portion 110, and the other end is connected to the middle of the inner arc portion 130. A first groove 140 is formed on one side of the connecting portion 120, and a second groove 150 is formed on the other side. The outer arc portion 110 and the inner arc portion 130 are concentric. The outer arc portion 110 has a groove 111 on one side in the circumferential direction and an insert 112 on the other side.

[0036] The cable tray unit 200 includes a front cable tray 201 and a rear cable tray 202. The front cable tray 201 includes a first baffle portion 210, a first insertion portion 220, and a second insertion portion 230. The same end of the first insertion portion 220 and the second insertion portion 230 is connected to the first baffle portion 210. The first insertion portion 220 is adapted to one end of a first groove 140, and the second insertion portion 230 is adapted to one end of a second groove 150. A connection portion 120 is provided between the first insertion portion 220 and the second insertion portion 230. The first slot 240 is adapted; the rear cable tray 202 includes a second baffle portion 250, a third insertion portion 260 and a fourth insertion portion 270, the same end of the third insertion portion 260 and the fourth insertion portion 270 is connected to the second baffle portion 250, the third insertion portion 260 is adapted to the other end of the first groove 140, the fourth insertion portion 270 is adapted to the other end of the second groove 150, and a second slot 280 adapted to the other end of the connecting portion 120 is provided between the third insertion portion 260 and the fourth insertion portion 270;

[0037] The front connector 201 is inserted from one end of the chip 100, and the rear connector 202 is inserted from the other end of the chip 100. The first slot 240 and the second slot 280 are adapted to the connecting part 120. The first baffle part 210 and the second baffle part 250 both extend out of the chip 100. The first insertion part 220 and the third insertion part are connected to form the first side groove 291, and the second insertion part 230 and the fourth insertion part 270 are connected to form the second side groove 292.

[0038] The slot 111 of the chip 100 is nested and engaged with the inlay 112 of another chip 100. The outer arc portions 110 of several chip 100s are spliced ​​together to form a ring. The first side slot 291 of the wire frame 200 is connected to the second side slot 292 of another wire frame 200 to form a wire slot 21.

[0039] Each chip 100 has a slot 111 on one side of its outer arc portion 110 and an insert 112 on the other side. Several chip 100s are circumferentially spliced ​​to form a ring-shaped stator chip 10. The wire frame group 200 includes a front wire frame 201 and a rear wire frame 202. The chip 100s are inserted into the front and rear wire frames 202. A wire groove 21 is formed between adjacent wire frame groups 200s for the winding 30 to pass through. Both the stator chip 10 and the stator wire frame 20 adopt a splicing type, which can greatly reduce the scrap cost and maintenance cost. When inserting the winding 30, it can be inserted into a single wire frame group 200 first, making winding convenient and simple. After winding, the chip 100s are spliced, thereby improving the assembly efficiency of the winding 30.

[0040] Please refer to Figure 1 and Figure 2The first insertion portion 220 has a first overlapping portion 221 at its end, the second insertion portion 230 has a second overlapping portion 231 at its end, the third insertion portion 260 has a third overlapping portion 261 at its end, and the fourth insertion portion 270 has a fourth overlapping portion 271 at its end. The first overlapping portion 221 overlaps with the third overlapping portion 261, and the second overlapping portion 231 overlaps with the fourth overlapping portion 271. The overlapping portions prevent gaps between the front and rear lead frames 201 and 202, thus solving the creepage distance problem between the coil and the chip, ensuring the insulation performance of the stator chip 10 winding, and forming a qualified winding 30.

[0041] Preferably, the lengths of the first overlapping portion 221 and / or the third overlapping portion 261 are greater than the length of the overlapping portion of the first overlapping portion 221 and the third overlapping portion 261, so that an overlapping allowance is formed between the first overlapping portion 221 and the third overlapping portion 261; the lengths of the second overlapping portion 231 and / or the fourth overlapping portion 271 are greater than the length of the overlapping portion of the second overlapping portion 231 and the fourth overlapping portion 271, so that an overlapping allowance is formed between the second overlapping portion 231 and the fourth overlapping portion 271. Setting an overlapping allowance ensures the insulation performance of the stator chip 10 windings and also reduces axial tolerance requirements, ensuring a low or even zero axial clearance fit between the front wire frame 201 and the rear wire frame 202 and the chip monolith 100.

[0042] Generally, the first overlapping portion 221 and the fourth overlapping portion 271 are both outer covers, and the second overlapping portion 231 and the third overlapping portion 261 are both inner covers; or, the first overlapping portion 221 and the fourth overlapping portion 271 are both outer covers, and the second overlapping portion 231 and the fourth overlapping portion 271 are both inner covers. That is, the first overlapping portion 221 and the second overlapping portion 231 have different structures, and the third overlapping portion 261 and the fourth overlapping portion 271 have different structures.

[0043] Alternatively, in another embodiment of this utility model, the first overlapping portion 221 and the second overlapping portion 231 are both outer sleeves, and the third overlapping portion 261 and the fourth overlapping portion 271 are both inner sleeves; or, the first overlapping portion 221 and the second overlapping portion 231 are both inner sleeves, and the third overlapping portion 261 and the fourth overlapping portion 271 are both outer sleeves. That is, the first overlapping portion 221 and the second overlapping portion 231 have the same structure, and the third overlapping portion 261 and the fourth overlapping portion 271 have the same structure.

[0044] Please refer to Figures 1-3The first baffle portion 210 includes a first outer arc extension portion 211 and a first inner arc extension portion 212, with a front groove 213 connecting the first outer arc extension portion 211 and the first inner arc extension portion 212, which communicates with the first side groove 291 and the second side groove 292. The second baffle portion 250 includes a second outer arc extension portion 251 and a second inner arc extension portion 252, with a rear groove 253 connecting the second outer arc extension portion 251 and the second inner arc extension portion 252, which communicates with the first side groove 291 and the second side groove 292. That is, each end has an outer arc extension portion and an inner arc extension portion spaced vertically apart, thereby ensuring insulation performance and preventing the winding 30 from disengaging.

[0045] Please refer to Figure 1 and Figure 2 The first outer arc extension 211 protrudes in the thickness direction at one end facing the second outer arc extension 251 and abuts against the outer arc portion 110. The second outer arc extension 251 protrudes in the thickness direction at one end facing the first outer arc extension 211 and abuts against the outer arc portion 110. The first inner arc extension 212 protrudes in the thickness direction at one end facing the second inner arc extension 252 and abuts against the inner arc portion 130. The second inner arc extension 252 protrudes in the thickness direction at one end facing the first inner arc extension 212 and abuts against the inner arc portion 130. This ensures an overlap allowance and avoids over-insertion.

[0046] Please refer to Figure 1 and Figure 2 The protrusion height of the first outer arc extension 211 in the thickness direction is less than the thickness of the outer arc portion 110; the protrusion height of the second outer arc extension 251 in the thickness direction is less than the thickness of the outer arc portion 110; the protrusion height of the first inner arc extension 212 in the thickness direction is less than the thickness of the inner arc portion 130; and the protrusion height of the second inner arc extension 252 in the thickness direction is less than the thickness of the inner arc portion 130. That is, the protruding portions do not exceed the chip unit 100, avoiding interference with the stator chip 10.

[0047] Please refer to Figure 1 and Figure 2 The ends of the first side groove 291 and the second side groove 292 near the outer arc portion 110 are flush with the outer arc portion 110 in the circumferential direction, while the ends of the first side groove 291 and the second side groove 292 near the inner arc portion 130 extend beyond the inner arc portion 130 in the circumferential direction. Since the outer arc portion 110 forms a complete ring after splicing, the outer ends of the first side groove 291 and the second side groove 292 need to form a complete arc and be flush with the outer arc portion 110; since the inner arc portion 130 has a gap after splicing, the inner ends of the first side groove 291 and the second side groove 292 need to form a complete arc and extend beyond the inner arc portion 130.

[0048] Please refer to Figures 1-3The curvature of the inner arc portion 130 is smaller than that of the outer arc portion 110, so that after several outer arc portions 110 are spliced ​​into a ring, there is a gap between two adjacent inner arc portions 130.

[0049] Please refer to Figure 1 Preferably, a positioning groove 113 is provided in the middle of the outer wall of the outer arc portion 110.

[0050] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

[0052] In summary, this utility model provides a spliced ​​stator wire frame structure. Each chip chip has a slot on one side of its outer arc portion and an insert on the other side. Several chip chips are spliced ​​circumferentially to form a ring-shaped stator chip. Each wire frame group includes a front wire frame and a rear wire frame, with chip chips inserted into the front and rear wire frames. Adjacent wire frame groups form grooves for windings to pass through. Both the stator chips and the stator wire frame are spliced, which can greatly reduce scrap and maintenance costs. Furthermore, when inserting the chips into the windings, they can be inserted into individual wire frame groups first, making winding convenient and simple. After winding, the chip chips are spliced, thereby improving the efficiency of winding assembly.

[0053] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A spliced stator bobbin structure, characterized by, The chip monolithic includes an outer arc part, a connecting part and an inner arc part, one end of the connecting part is connected to the middle part of the outer arc part, the other end is connected to the middle part of the inner arc part, one side of the connecting part forms a first groove, the other side forms a second groove, the outer arc part is concentric with the inner arc part, one side of the outer arc part is provided with an embedding groove, the other side is provided with an embedding body; The wire frame single group includes a front wire frame and a rear wire frame, the front wire frame includes a first baffle part, a first insertion part and a second insertion part, the same end of the first insertion part and the second insertion part is connected with the first baffle part, the first insertion part is matched with one end of the first groove, the second insertion part is matched with one end of the second groove, the first insertion part and the second insertion part have a first insertion slot matched with one end of the connecting part; the rear wire frame includes a second baffle part, a third insertion part and a fourth insertion part, the same end of the third insertion part and the fourth insertion part is connected with the second baffle part, the third insertion part is matched with the other end of the first groove, the fourth insertion part is matched with the other end of the second groove, the third insertion part and the fourth insertion part have a second insertion slot matched with the other end of the connecting part; The front wire frame is inserted from one end of the chip monolithic, the rear wire frame is inserted from the other end of the chip monolithic, the first insertion slot and the second insertion slot are matched with the connecting part, the first baffle part and the second baffle part extend out of the chip monolithic, the first insertion part and the third insertion part are butt jointed to form a first side slot, the second insertion part and the fourth insertion part are butt jointed to form a second side slot; The embedding groove of the chip monolithic is nested with the embedding body of another chip monolithic, the outer arc parts of several chip monolithics are spliced to form a ring, the first side slot of the wire frame single group is communicated with the second side slot of another wire frame single group to form a wire slot. The end of the first insertion part is provided with a first lap joint part, the end of the second insertion part is provided with a second lap joint part, the end of the third insertion part is provided with a third lap joint part, the end of the fourth insertion part is provided with a fourth lap joint part, the first lap joint part is lap jointed with the third lap joint part, the second lap joint part is lap jointed with the fourth lap joint part.

2. A spliced stator bobbin structure according to claim 1, wherein The length of the first lap joint part and / or the third lap joint part is greater than the length of the coincident lap joint part of the first lap joint part and the third lap joint part, so that the lap joint allowance is formed between the first lap joint part and the third lap joint part; the length of the second lap joint part and / or the fourth lap joint part is greater than the length of the coincident lap joint part of the second lap joint part and the fourth lap joint part, so that the lap joint allowance is formed between the second lap joint part and the fourth lap joint part.

3. A spliced stator bobbin structure according to claim 2, wherein The first lap joint part and the fourth lap joint part are both outer sleeves, the second lap joint part and the third lap joint part are both inner sleeves; or, the first lap joint part and the fourth lap joint part are both outer sleeves, the second lap joint part and the fourth lap joint part are both inner sleeves.

4. The spliced stator bobbin structure of claim 2, wherein, ​ 5. The spliced stator bobbin structure of claim 2, wherein, The first and second lap joints are outer sleeves, and the third and fourth lap joints are inner sleeves; or the first and second lap joints are inner sleeves, and the third and fourth lap joints are outer sleeves.

6. The spliced stator bobbin structure of claim 1, wherein, The first baffle part comprises a first outer-arc extension and a first inner-arc extension, and a front recess is formed between the first outer-arc extension and the first inner-arc extension and communicates with the first side groove and the second side groove; the second baffle part comprises a second outer-arc extension and a second inner-arc extension, and a rear recess is formed between the second outer-arc extension and the second inner-arc extension and communicates with the first side groove and the second side groove.

7. A spliced stator bobbin structure according to claim 6, wherein One end of the first outer-arc extension facing the second outer-arc extension protrudes in the thickness direction and abuts against the outer-arc part, one end of the second outer-arc extension facing the first outer-arc extension protrudes in the thickness direction and abuts against the outer-arc part, one end of the first inner-arc extension facing the second inner-arc extension protrudes in the thickness direction and abuts against the inner-arc part, and one end of the second inner-arc extension facing the first inner-arc extension protrudes in the thickness direction and abuts against the inner-arc part.

8. The spliced stator bobbin structure of claim 6, wherein, The protruding height of the first outer-arc extension in the thickness direction is less than the thickness of the outer-arc part, the protruding height of the second outer-arc extension in the thickness direction is less than the thickness of the outer-arc part, the protruding height of the first inner-arc extension in the thickness direction is less than the thickness of the inner-arc part, and the protruding height of the second inner-arc extension in the thickness direction is less than the thickness of the inner-arc part.

9. The spliced stator bobbin structure of claim 1 wherein, One end of the first side groove and the second side groove close to the outer-arc part is flush with the outer-arc part in the circumferential direction, and one end of the first side groove and the second side groove close to the inner-arc part exceeds the inner-arc part in the circumferential direction.

10. The spliced stator bobbin structure of claim 1, wherein, The curvature of the inner-arc part is less than the curvature of the outer-arc part, so that a gap is formed between two adjacent inner-arc parts after the outer-arc parts are spliced into a ring shape.

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