CN215498447U

CN215498447U - Stator containing motor concentrated winding

Info

Publication number: CN215498447U
Application number: CN202120989210.3U
Authority: CN
Inventors: 王健欢
Original assignee: Changyingxinzhi Technology Co ltd
Current assignee: Xinzhi Group Co ltd
Priority date: 2021-05-10
Filing date: 2021-05-10
Publication date: 2022-01-11
Anticipated expiration: 2031-05-10

Abstract

The utility model discloses a stator containing a motor concentrated winding, which belongs to the technical field of motor stators and comprises tooth head splicing blocks (1) and yoke splicing blocks (2), wherein the tooth head splicing blocks (1) are positioned on the same circumferential line, every two adjacent tooth head splicing blocks (1) are connected by the yoke splicing blocks (2), tooth socket groove surfaces (6) are arranged at two sides of the tooth head splicing blocks (1), and lead wire grooves (5) are arranged on the yoke splicing blocks (2).

Description

Stator containing motor concentrated winding

Technical Field

The utility model belongs to the technical field of motor stators, and particularly relates to a stator comprising a motor concentrated winding, which is applied to a stator, and a winding method for manufacturing the stator comprising the motor concentrated winding.

Background

A motor stator is an important component of a motor such as a driver, and generally includes a tooth portion in which a coil is provided and a yoke portion. In the prior art, generally, stator punching sheets which are integrally punched and formed are manufactured firstly, the stator punching sheets are mutually fixed in a welding mode and the like, and then the formed stator is wound and installed.

In order to improve the slot fullness rate of the stator, the chinese patent application No. 201910728716.6 on 08/2019 discloses a stator core, a wound stator, a concentrated winding motor and a production method thereof, wherein the stator core comprises: yoke portion structure and a plurality of tooth portion structure, yoke portion structure divide into a plurality of yoke portion structure section the same with tooth portion structure quantity, adopt tenon fourth of the twelve earthly branches connected mode with every yoke portion structure section and every tooth portion structure connection, a plurality of yoke portion structure sections end to end connection in proper order constitutes annular yoke portion structure of circle, a plurality of tooth portion structure are located same circumference. This stator core, wound-rotor stator, concentrated winding motor through inciting somebody to action the tooth structure and the yoke portion structure of wound-rotor stator are the isolating construction, demountable installation, adopt the foretell yoke portion structure of present stamping process preparation its current preparation that has reduced integrated into one piece's stator core's the technology degree of difficulty, the volume of scrapping of material when having reduced the preparation has reduced manufacturing cost.

However, the stator core, the wound stator, the concentrated winding motor and the production method have the advantages that the coil is directly wound on the stator core, the winding is not tight enough, and the insulating layers are arranged on the two sides of the stator core, so that the insulating layers are easily damaged during winding, and the quality of the motor is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems that in the prior art, a coil is directly wound on a stator core, the winding is not tight enough, an insulating layer is easy to damage during winding, and the quality of a motor is influenced.

In order to achieve the purpose, the utility model provides a stator comprising a motor concentrated winding, which comprises tooth head splicing blocks used for winding and placing coil windings and yoke splicing blocks used for locking and fixing adjacent tooth head splicing blocks, wherein the tooth head splicing blocks comprise tooth head punching sheets, the yoke splicing blocks comprise yoke punching sheets, the tooth head splicing blocks and the yoke splicing blocks are correspondingly arranged in groups, the tooth head splicing blocks are positioned on the same circumferential line, every two adjacent tooth head splicing blocks are connected through the yoke splicing blocks, tooth socket groove surfaces are arranged on two sides of the tooth head splicing blocks, splicing parts are arranged on the tooth socket groove surfaces and opposite to the yoke splicing blocks, winding parts are arranged on the tooth socket groove surfaces and used for placing the coil windings, and lead grooves used for leading out lead wires are arranged on the inner side surfaces of the yoke splicing blocks close to the tooth head splicing blocks.

As a further improvement of the present invention, the above-mentioned stator including concentrated windings of the motor has a configuration in which the lead slots are semicircular or square in cross section.

As a further improvement measure of the present invention, in the above-mentioned stator including the concentrated winding of the motor, the tooth socket surfaces on both sides of the tooth head segment are inclined, the inner width of the tooth head segment is greater than the outer width, the locking surfaces on both sides of the yoke segment are inclined, and the locking surfaces are matched with the splicing portions on the tooth socket surfaces.

As another improvement measure of the present invention, in the above stator including the concentrated winding of the motor, the tooth socket surfaces on both sides of the tooth head segment are parallel to each other, the inner width and the outer width of the tooth head segment are equal, the locking surfaces on both sides of the yoke segment are inclined, and the locking surfaces are matched with the splicing portions on the tooth socket surfaces.

As a further improvement measure of the utility model, the stator comprising the motor concentrated winding is characterized in that the splicing part is provided with a fixing groove, the width of a notch of the fixing groove is smaller than the width of the inside of the groove body, the locking surfaces on two sides of the yoke splicing block are provided with fixing blocks, and the fixing blocks are matched with the fixing groove.

As a further improvement measure of the present invention, in the above-mentioned stator including the concentrated winding of the motor, the inner surface of the tooth head splicing block is provided with a limiting surface, the limiting surface includes a first limiting surface and a second limiting surface, and the first limiting surface and the second limiting surface are arranged in an inclined shape and respectively form an obtuse angle with an included angle of the corresponding tooth socket surface.

As another improvement measure of the present invention, in the above stator including a concentrated winding of a motor, the inner surface of the tooth head segment is provided with a limiting surface, and the limiting surface is provided with an arc shape.

As a further improvement measure of the utility model, the stator comprising the motor concentrated winding is characterized in that a first buckling point is arranged on the tooth head punching sheet, adjacent tooth head punching sheets are fixedly connected by the first buckling point, a second buckling point is arranged on the yoke punching sheet, and adjacent yoke punching sheets are fixedly connected by the second buckling point.

Compared with the prior art, the utility model has the beneficial effects that: 1. by arranging the tooth head splicing blocks and the yoke splicing blocks, a coil winding which is formed by winding can be directly sleeved on the tooth head splicing blocks, and then the adjacent tooth head splicing blocks are fixedly locked by the yoke splicing blocks, so that the insulating layer can be prevented from being damaged when the coil is wound, the product quality is improved, and the wound coil is compact, and the slot filling rate can be improved; 2. the lead slots are formed in the yoke splicing blocks, so that lead wires at one ends of the coil windings are embedded into the lead slots, invalid occupation in the slots is reduced, and the slot fullness rate can be improved.

Drawings

FIG. 1 is a plan view showing a state in which tooth segments and yoke segments are assembled according to the present invention.

Fig. 2 is a perspective view showing a state in which tooth segments and yoke segments are assembled according to the present invention.

Fig. 3 is a top view of the tooth head segment of the present invention.

Fig. 4 is a perspective view of the tooth head segment of the present invention.

Fig. 5 is a top view of a yoke segment of the present invention.

Fig. 6 is a perspective view of a yoke segment of the present invention.

Fig. 7 is a top view of the capping mold of the present invention.

Fig. 8 is a perspective view of the capping mold of the present invention.

Fig. 9 is a top view of the inventive tooth head die.

Fig. 10 is a perspective view of the tooth head mold of the present invention.

Fig. 11 is a sectional view showing a combination of a tooth head mold and a cap mold according to the present invention.

Fig. 12 is a sectional view showing a combined state of a coil, a tooth head segment and a yoke segment according to the present invention.

FIG. 13 is a flow chart diagram of a winding method.

The reference numbers illustrate: 1-splicing tooth heads; 2-yoke segments; 3-splicing part; 4-a winding part; 5-lead slot; 6-gullet surface; 7-locking surface; 8, fixing grooves; 9-fixing block; 10-a first projection; 11-void portion one; 12-void part two; 13-convex part two; 14-a first buckling point; 15-a second buckling point; 16-a tooth head mold; 17-capping the mould; 18-a mold slot; 19-a first through hole; 20-a second through hole; 21-a groove body; 22-a first limiting surface; and 23, a second limiting surface.

Detailed Description

The utility model will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 6, a stator including a concentrated winding of a motor includes a tooth-head segment 1 for winding a coil winding and a yoke segment 2 for locking and fixing an adjacent tooth-head segment 1, the tooth-head segment 1 is composed of tooth-head punching sheets, a first fastening point 14 is arranged on each tooth-head punching sheet, and upper and lower adjacent tooth-head punching sheets are fixedly connected by the first fastening point 14, that is, a protrusion of the first fastening point 14 of the upper tooth-head punching sheet is fastened into a groove of the first fastening point 14 of the lower tooth-head punching sheet for compressing and fixing, so that the connection is firm; similarly, the yoke split 2 is composed of yoke punching sheets, the yoke punching sheets are provided with two buckling points 15, and the yoke punching sheets adjacent to each other up and down are fixedly connected by the two buckling points 15. The tooth head segments 1 are arranged into 12 groups, and the yoke segments 2 are correspondingly arranged into 12 groups. The tooth head splicing blocks 1 are arranged on the same circumferential line in a surrounding mode, every two adjacent tooth head splicing blocks 1 are connected through the yoke splicing block 2, tooth groove surfaces 6 are arranged on two sides of the tooth head splicing blocks 1, as a scheme, the tooth groove surfaces 6 on two sides of the tooth head splicing blocks 1 are arranged in an inclined mode, and the width of the inner side of each tooth head splicing block 1 is larger than that of the outer side of the tooth head splicing block; as another scheme, the tooth groove surfaces 6 on the two sides of the tooth head splicing block 1 are parallel to each other, and the inner side width and the outer side width of the tooth head splicing block 1 are equal; the splicing part 3 is arranged on the tooth socket groove surface 6 opposite to the yoke splicing block 2 and used for connecting the yoke splicing block 2, the locking surfaces 7 on two sides of the yoke splicing block 2 are arranged in an inclined shape, and the locking surfaces 7 are matched with the inclined surfaces of the splicing part 3 on the tooth socket groove surface 6; and a winding part 4 is arranged on the slot surface 6 of the tooth slot and used for placing coil windings.

For the convenience of connection, a fixing groove 8 is formed in the splicing portion 3, the width of a notch of the fixing groove 8 is smaller than the width of the inside of the groove body, if the shape of the cross section of the fixing groove 8 is trapezoidal or circular arc, fixing blocks 9 are arranged on the locking surfaces 7 on the two sides of the yoke splicing block 2, and the fixing blocks 9 are matched with the cross section of the fixing groove 8. During the use, piece together fixed block 9 of 2 one sides of yoke portion and the fixed slot 8 alignment on the concatenation portion 3, down insert the tooth head from the follow and piece together piece 1, can reach the fixed action that piece together piece 2 and tooth head piece 1 of yoke portion, piece together piece fixed block 9 of opposite side and the fixed slot 8 alignment on the concatenation portion 3 of adjacent tooth head piece 1, down insert tooth head piece 1 from the follow, can piece together piece 2 and fix adjacent tooth head piece 1 with yoke portion, and in this way, can piece together piece 1 annular stator of tooth head one-tenth with yoke portion piece 2 connection tooth head.

The lead wire groove 5 that is used for the wire to draw forth is set up near tooth head piece together 1 department at yoke portion piece together 2 medial surfaces, the cross-section of lead wire groove 5 sets up to semi-circle or square, in order to match different coils, the wire decision that specific shape used in according to the motor, use semi-circle in this embodiment, the lead-out wire setting of wire is in lead wire groove 5, play the position of fixed wire lead-out wire on the one hand, on the other hand, make the lead-out wire not occupy the spatial position between tooth head piece together 1, can improve the groove filling rate, yoke portion piece together 2 can play the effect of restriction coil position simultaneously.

The inner surface of the yoke part splicing block 2 is provided with a limiting surface, the limiting surface comprises a first limiting surface 22 and a second limiting surface 23, the first limiting surface 22 and the second limiting surface 23 are arranged in an inclined shape, and an included angle between the first limiting surface 22 and the second limiting surface 23 is an obtuse angle; of course, the inner side surface of the yoke part splicing block 2 is provided with a limiting surface, and the limiting surface can also be in an arc shape; the limiting surface is arranged, and the effect of fixing the coil winding can be achieved. The outer surface of the yoke segment 2 is arc-shaped, so that the whole spliced tooth head segment 1 and the yoke segment 2 form a circle.

As shown in fig. 13, the present invention is fabricated by the following method: step one, a mould manufacturing process; step two, assembling the die; step three, winding the winding coil; step four, the cross-line winding process; step five, demolding; step six, fixing the coil; step seven, a stator splicing process; step eight, the wire arrangement process.

The specific method is that firstly, a die is manufactured, as shown in fig. 1, fig. 2, and fig. 7 to fig. 12, the die comprises a tooth head die 16 and a cover die 17, the tooth head die 16 and the winding part 4 in the tooth head splicing block 1 are the same in size and shape, the cover die 17 is fixed at the end part of the tooth head die 16, a groove body 21 is arranged at the position of the cover die 17I opposite to the tooth head die 16, a through hole II 20 is arranged on the groove body 21, one end of the tooth head die 16 is clamped in the groove body 21 of the cover die 17, a through hole I19 is arranged on the tooth head die 16, an internal thread is arranged in the through hole I19, the through hole I19 is opposite to the through hole II 20, a screw passes through the through hole II 20 and the through hole I19, and the tooth head die 16 and the cover die 17 are fixedly connected. A die groove 18 corresponding to the lead groove 5 is provided on the capping die 17 near the tooth head die 16.

Then the mould is installed on a winding machine for fixing, an outgoing line at one end of a winding coil is embedded into a mould groove 18, the mould is rotated to enable the conducting wire to be wound on a tooth head mould 16, when the mould is rotated, the mould is lifted simultaneously to enable the conducting wire to sequentially cover the surface of the tooth head mould 16 from top to bottom, when the surface of the tooth head mould 16 is completely covered by the coil, a first layer of coil is formed, at the moment, the mould is lowered to enable the conducting wire to continuously revolve on the outer layer of the wound first layer of coil, the coil is continuously covered on the first layer of coil to form a second layer of coil, then the mould is lifted, the conducting wire is continuously wound on the outer side of the second layer of coil to form a third layer of coil, and the circulation is carried out, the conducting wire is wound on the surface of the tooth head mould 16 in an overlapping mode, and therefore, the winding arrangement is tight. When the wire is wound to the last half turn, the wire is obliquely crossed from the end part of the coil to the top of the outermost layer, the position of the wire outlet end is changed, and the wire is cut off.

Then loosening the fixing piece, separating the tooth head mould 16 and the cover mould 17 in the mould, and separating the coil wound on the tooth head mould 16 from the tooth head mould 16; sleeving the coils wound in the tooth head die 16 into the tooth head split blocks 1 respectively; two adjacent tooth head segments 1 are fixedly connected by a yoke segment 2, and lead wires are inserted into lead slots 5 of the yoke segment 2 to form a circular stator. According to the winding obtained by the method, the first convex part 10 and the first gap part 11 are formed on one side of the coil at the bottom of the tooth head splicing block 1, the second gap part 12 and the second convex part 13 are formed on one side of the coil at the upper part, so that after two adjacent groups of tooth head splicing blocks 1 are combined, the first convex part 10 at the bottom of the adjacent coil is opposite to the first gap part 11 at the bottom of the other coil, and the second gap part 12 at the upper part of the adjacent coil is opposite to the second convex part 13 at the upper part of the other coil, so that the space of a groove body between the tooth head splicing blocks 1 can be fully utilized, and the groove filling rate is improved.

And finally, collecting and combining the outgoing wires in all the outgoing wire slots 5, collecting and combining the tail ends of all the coils, and combining according to the phase line requirements of the stator wires to form a complete stator.

By using the method, thicker winding coils, whether round or square, can be wound more tightly without damaging the stator or the conducting wire, so that the slot filling rate of the stator is improved, and the product quality is improved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and it will be apparent to those skilled in the art that several modifications and improvements may be made without departing from the present invention, and these should be construed as falling within the scope of the present invention.

Claims

1. The stator containing the motor concentrated winding is characterized by comprising tooth head splicing blocks (1) used for winding and placing coil windings and yoke splicing blocks (2) used for locking and fixing adjacent tooth head splicing blocks (1), wherein the tooth head splicing blocks (1) consist of tooth head punching sheets, the yoke splicing blocks (2) consist of yoke punching sheets, the tooth head splicing blocks (1) and the yoke splicing blocks (2) are correspondingly arranged into 6-48 groups, the tooth head splicing blocks (1) are positioned on the same circumference line, every two adjacent tooth head splicing blocks (1) are connected through the yoke splicing blocks (2), tooth slot surfaces (6) are arranged on two sides of the tooth head splicing blocks (1), splicing parts (3) are arranged on the tooth slot surfaces (6) opposite to the yoke splicing blocks (2), and winding parts (4) are arranged on the tooth slot surfaces (6) used for placing the coil windings, and a lead groove (5) for leading out a lead is arranged on the inner side surface of the yoke section (2) close to the tooth head section (1).

2. A stator comprising concentrated windings of an electric machine, according to claim 1, characterized in that the cross-section of the lead slots (5) is arranged as a semicircle or a square.

3. The stator comprising concentrated windings of motor as claimed in claim 2, wherein the slot surfaces (6) at both sides of the tooth head segment (1) are disposed to be inclined, the inside width of the tooth head segment (1) is greater than the outside width, the locking surfaces (7) at both sides of the yoke segment (2) are disposed to be inclined, and the locking surfaces (7) are engaged with the splicing parts (3) on the slot surfaces (6).

4. The stator comprising concentrated windings of motor as claimed in claim 2, wherein the slot surfaces (6) on both sides of the tooth head segment (1) are parallel to each other, the width of the inside of the tooth head segment (1) is equal to the width of the outside of the tooth head segment, the locking surfaces (7) on both sides of the yoke segment (2) are arranged in an inclined shape, and the locking surfaces (7) are matched with the splicing parts (3) on the slot surfaces (6).

5. The stator comprising the concentrated motor winding according to claim 3 or 4, wherein the splicing portion (3) is provided with a fixing groove (8), the width of a notch of the fixing groove (8) is smaller than the width of the inside of the slot body, the locking surfaces (7) on two sides of the yoke segment (2) are provided with fixing blocks (9), and the fixing blocks (9) are matched with the fixing groove (8).

6. The stator comprising concentrated windings of motor as claimed in claim 5, wherein said yoke segments (2) have a first limiting surface (12) and a second limiting surface (13) on their inner surfaces, and the included angle between said first limiting surface (12) and said second limiting surface (13) is an obtuse angle.

7. A stator comprising concentrated windings of an electric motor according to claim 5, characterized in that the inner surface of the yoke segments (2) is provided with a limiting surface, which is provided in the shape of an arc.

8. The stator comprising the concentrated winding of the motor as claimed in claim 1, wherein a first fastening point (14) is arranged on the tooth head punching sheet, adjacent tooth head punching sheets are fixedly connected by the first fastening point (14), a second fastening point (15) is arranged on the yoke punching sheet, and adjacent yoke punching sheets are fixedly connected by the second fastening point (15).