CN220527746U - Positive and negative bending stator straight iron core and motor stator structure - Google Patents

Abstract

The application relates to the technical field of motors, in particular to a positive and negative bending stator straight bar iron core and a motor stator structure, wherein the straight bar iron core comprises more than three stator iron core split bodies, the more than three stator iron core split bodies are in a connected block-shaped straight bar shape, and two adjacent stator iron core split bodies are connected through a connected rib; the stator core split comprises a core yoke part, pole shoes, a connecting pair of bevel edges and a core tooth part, wherein the two connecting pair of bevel edges are respectively and symmetrically fixedly connected to two end parts of the core yoke part; the conjoined rib is fixedly connected with two adjacent split connecting pair oblique sides of two stator cores, and two sides of the conjoined rib are respectively provided with symmetrical concave bent abdicating circular arc angles. This application designs into straight iron core with stator core, can reverse round (square) guarantor's volume wire winding, and the stator shaping of forward round (square) that changes can provide sufficient space in order to obtain best wire winding speed for the wire winding, can possess again and guarantee to cause the minimum effect of enameled wire damage in the wire winding process.

Description

Positive and negative bending stator straight iron core and motor stator structure

Technical Field

The application relates to the technical field of motors, in particular to a positive and negative bending stator straight bar iron core and a motor stator structure.

Background

The structure of the stator core of the motor determines the winding mode of a winding coil, and the existing stator core structure and winding mode basically cannot meet ideal requirements, and the specific performance is as follows:

(1) In order to ensure that the insulated sheath of the enameled wire is not damaged (broken, pulled, scratched) in the winding process, the insulation reliability of the enameled wire is improved, the winding speed is severely limited, the production efficiency of a single winding machine is low, the processing cost cannot be reduced, the required quantity of the winding machines is large in mass production, the investment is excessive, the cost performance is extremely low, and the investment recovery is difficult.

(2) In order to improve the production efficiency, the insulation reliability of the enameled wire is reduced, the winding speed is increased, and the wound coil is subjected to insulation (dipping insulating paint) treatment; also increasing the production costs.

(3) The winding quality can be ensured, the production efficiency can be ensured, and the investment cost performance can be ensured; there is no stator core structure that provides enough space for winding to obtain the best winding effect; or too restrictive.

Disclosure of Invention

In order to improve winding speed and reduce enameled wire damage, the application provides a positive and negative bending stator straight iron core and a motor stator structure.

The following technical scheme is adopted:

the stator straight bar iron core comprises more than three stator iron core split bodies, wherein the more than three stator iron core split bodies are in a connected block-shaped straight bar shape, and two adjacent stator iron core split bodies are connected through a connected rib;

the stator core split comprises a core yoke, a pole shoe, a connecting pair of bevel edges and a core tooth part, wherein two ends of the core tooth part are respectively communicated with the core yoke and the pole shoe, two connecting pair of bevel edges are arranged, and the two connecting pair of bevel edges are respectively and symmetrically communicated with two end parts of the core yoke;

the connecting ribs are fixedly communicated with two adjacent connecting pair bevel edges adjacent to the two adjacent stator iron cores in a split manner, and two sides of the connecting ribs are respectively provided with a first bending abdication arc angle and a second bending abdication arc angle which are symmetrical and concave;

the first bending yielding circular arc angle is positioned on one side of the conjoined rib, which is close to the pole shoe, and the second bending yielding circular arc angle is positioned on the other side of the conjoined rib, which is far away from the pole shoe.

By adopting the technical scheme, a plurality of stator iron cores are arranged in a split way to form a connected block-shaped straight bar, the punching lamination is convenient to produce and manufacture, and the material utilization rate is high; the stator core components of a whole that can function independently is through disjunctor muscle fixed connection straight bar shape, the symmetry that the both sides of disjunctor muscle set up respectively just indent first bending is put the circular arc angle of stepping down and the circular arc angle of stepping down is put to the second bending, first bending is put the circular arc angle of stepping down and is put the circular arc angle with the second bending and satisfy the stator core components of a whole that can function independently reverse roll round wire winding and the fashioned trace bending tensile deformation of forward roll round and put down and bend stress intensity requirement, make adjacent connection pair hypotenuse can the plane butt joint paste, if disjunctor muscle does not set up suitable bending and put down circular arc angle and width, disjunctor muscle bending strength is too high when the roll round, be difficult to make adjacent stator core components of a whole that can function independently butt joint paste to the hypotenuse, disjunctor muscle bending strength is too low, the fracture easily takes place.

Optionally, two adjacent connection pairs of the stator core split bodies are provided with semicircular concave-convex guiding positioning parts at the ends of the bevel edges.

By adopting the technical scheme, when the straight iron core is formed in a forward rolling way, the semicircular concave-convex guiding positioning part is used for positioning and connecting the adjacent stator iron cores in a split way, the connection is convenient and the positioning is accurate, the problem of butt joint offset is avoided, and the integrity of the stator iron core formed in the rolling way is improved so as to ensure the combination dimensional accuracy.

Optionally, the positioning part comprises a semicircular arc groove fixedly arranged at the end part of one connection pair bevel edge and a semicircular arc lug fixedly arranged at the end part of the other connection pair bevel edge, and the semicircular arc lug is matched with the semicircular arc groove.

By adopting the technical scheme, the semicircular arc guide positioning enables the stator core to be bent and butted more stably and smoothly.

Optionally, the end face of the yoke part of the iron core is provided with a first buckling and riveting point of the punching lamination, and the end face of the tooth part of the iron core is provided with a second buckling and riveting point of the punching lamination;

the number of the first buckling and riveting points is two, the two first buckling and riveting points are symmetrically distributed on the end faces of the iron core yoke on two sides of the central axis of the iron core yoke, and the second buckling and riveting points are located at the center of the end faces of the iron core teeth.

By adopting the technical scheme, the stator core is formed by laminating a plurality of stator punching sheets, and the first buckling and riveting point and the second buckling and riveting point are convenient for connecting and fixing the plurality of stator punching sheets, so that the stator core structure formed by the plurality of stator punching sheets is more compact and reliable.

Optionally, the number of the stator core split bodies is four, and the included angle of two connection pairs of bevel edges connected with the same conjoined rib is 90 degrees.

By adopting the technical scheme, the stator core structure formed by the split and rounding of the four stator cores is suitable for the application of a low pole pair motor.

Optionally, the number of the stator core split bodies is eight, and the included angle of two connection pairs of bevel edges connected with the same conjoined rib is 45 degrees.

By adopting the technical scheme, the stator core structure formed by the split and rounding of the eight stator cores is suitable for the application of the high pole pair motor.

The motor stator structure comprises the stator core formed by rounding the stator straight iron core, an insulating framework arranged on the stator core, and a winding coil wound on the framework.

By adopting the technical scheme, the insulating framework is used for separating the winding coil from the stator core.

Optionally, the insulating framework comprises a front framework and a rear framework;

the back skeleton includes the insulating arc wire casing baffle that supports against the pole shoe, insert the insulating picture peg in the iron core inslot of locating between iron core yoke portion and the pole shoe, the insulating end plate of the insulating picture peg in fixed connection insulating arc wire casing baffle and the iron core inslot, fixed connection is at iron core inslot insulating picture peg one end and with the wire casing plane baffle of insulating end plate parallel and level, fix circular power supply lead pin post on the wire casing plane baffle, fix on the wire casing plane baffle and be located circular power supply lead pin post both sides circular gap bridge wire blocking post and the perpendicular string hanging post that fixes with the recess on the wire casing plane baffle.

By adopting the technical scheme, the split front framework and the split rear framework which are reasonable in framework structure design are convenient to assemble with the stator core, and the front framework and the rear framework are mutually spliced to form the concave uniform wire slot for winding the coil.

Optionally, two circular bridge wire blocking posts on the back skeleton are solid cylinder, and circular power supply lead pin post is hollow cylinder, and the contact pin hole that is used for power supply lead and winding coil intercommunication is seted up to the tip of circular power supply lead pin post, the wire hanging post interval sets up between adjacent circular power supply lead pin post.

By adopting the technical scheme, the bridge wire blocking posts at the outermost sides of the front framework and the rear framework are used for restraining the bridge wire in the wire slot when the bridge wire passes the bridge, so that the defect of insufficient electric gap and creepage distance caused by the exposed slot is prevented; the pin holes are formed in the pin posts of the rear framework so as to facilitate connection of the power supply lead wires by the pins; the wire hanging column is used for fixing the bridge wire.

Optionally, the front framework and the rear framework have the same structure, so that the front framework and the rear framework of the bridge wire of the coils with different phases can be conveniently separated to hang wires, and interphase voltage withstand breakdown is prevented.

In summary, the present application includes at least one of the following beneficial technical effects:

(1) The stator core is designed into a straight strip shape which can be folded and rolled in two directions, and the stator core can be wound in a quality and quantity maintaining mode after being reversely turned into a round (square) shape, and then the stator is formed after winding is completed.

(2) The winding mode is simple, the speed is high, and the efficiency is high; the insulated layer of the enameled wire is less damaged and has high reliability.

(3) The quantity of winding equipment is small, the investment is small, and the cost performance is high.

Drawings

Fig. 1 is a schematic view of a stator straight bar core structure according to a first embodiment;

FIG. 2 is an enlarged schematic view of portion A of FIG. 1;

fig. 3 is a schematic structural view of a stator core split;

fig. 4 is a schematic structural diagram of a reverse rounding state of a stator straight iron core according to an embodiment;

FIG. 5 is an enlarged schematic view of portion B of FIG. 4;

fig. 6 is a schematic structural view of a straight iron core in a forward-turning state according to the embodiment;

FIG. 7 is an enlarged schematic view of portion C of FIG. 6;

FIG. 8 is a schematic structural view of the rear frame;

fig. 9 is a schematic structural view of an insulating sleeve board intended to show a rear skeleton;

FIG. 10 is a schematic top view of the assembled framework of FIG. 4;

FIG. 11 is a schematic elevational view of the assembled framework of FIG. 4;

FIG. 12 is a schematic top view of a stator structure;

FIG. 13 is a schematic elevational view of a stator structure;

fig. 14 is a schematic view of a stator straight bar core structure according to the second embodiment;

fig. 15 is a schematic structural view of a reverse turning state of a straight iron core of a second stator according to the embodiment;

fig. 16 is a schematic structural view of a straight iron core of the second embodiment in a forward-turning state.

In the drawing, 10, a stator core; 20. a front skeleton; 30. a rear skeleton; 40. a winding coil; 1. a core yoke; 2. iron core tooth; 3. a connecting pair of bevel edges; 4. pole shoes; 5. a process positioning groove; 6. the first buckling and riveting point; 7. a second buckling and riveting point; 8. a semicircular concave-convex guiding and positioning part; 81. a semicircular groove; 82. a semicircular arc bump; 9. a first bending abdication arc angle; 11. an insulating arc-shaped slot baffle; 12. insulating plugboards in the iron core slots; 13. an insulating end plate; 14. round power supply lead pin posts; 15. a string hanging column; 16. a slot plane baffle; 17. a second bending abdication arc angle; 18. and (5) connecting the tendons.

Detailed Description

The present application is described in further detail below in conjunction with figures 1-16.

Example 1

As shown in fig. 1, a positive and negative bending stator straight bar iron core comprises more than three stator iron core split bodies, wherein the more than three stator iron core split bodies are in a connected block-shaped straight bar shape, and two adjacent stator iron core split bodies are connected through a connected rib 18;

the stator core split comprises a core yoke part 1, a pole shoe 4, a connection pair bevel edge 3 and a core tooth part 2, wherein two ends of the core tooth part 2 are respectively communicated with the middle part of the core yoke part 1 and the middle part of the pole shoe 4, two connection pair bevel edges 3 are arranged, and the two connection pair bevel edges 3 are respectively and symmetrically fixedly communicated with two ends of the core yoke part 1;

as shown in fig. 2, the conjoined rib 18 is communicated with two adjacent connecting pair bevel edges 3 of two adjacent stator iron cores in a split manner, and two sides of the conjoined rib 18 are respectively provided with a first bending abdication arc angle 9 and a second bending abdication arc angle 17 which are symmetrical and concave;

the first bending yielding circular arc angle 9 is positioned on one side of the conjoined rib 18 close to the pole shoe 4, and the second bending yielding circular arc angle 17 is positioned on the other side of the conjoined rib 18 away from the pole shoe 4.

In the embodiment, the plurality of stator iron cores are arranged in a split manner to form a connected block-shaped straight bar, the punching lamination is convenient to produce and manufacture, and the material utilization rate is high; the stator core components of a whole that can function independently are formed straight bar through disjunctor muscle 18 fixed connection between the disjunctor muscle 18, and symmetrical and indent first bending of disjunctor muscle 18 both sides set up respectively are bent and are bent the circular arc angle 9 and the second is bent the circular arc angle 17 of stepping down, and first bending is stepped the circular arc angle 9 and the second is bent the circular arc angle 17 of stepping down and is satisfied stator straight bar core reverse turn round wire winding and forward turn round fashioned micro bending tensile deformation and step down and bending stress intensity requirement, make adjacent connection pair hypotenuse 3 can the plane butt joint paste. If the conjoined ribs 18 are not provided with proper bending yielding arc angles and widths, and the conjoined ribs 18 have too high bending strength during rounding, the butt joint and the adhesion of the connection pair bevel edges 3 of the adjacent stator core split bodies are difficult; the conjoined rib 18 has too low bending strength and is liable to break.

As shown in fig. 4 and 5, the stator straight iron core reversely turns round, so that the stator iron core is turned outside separately, the winding iron core tooth part 2 of the stator iron core is leaked outside, the insulating framework is convenient to install, and the coil is wound quickly.

As shown in fig. 6 and 7, the stator straight iron core is clockwise rounded and the stator is formed.

In this embodiment, the ends of the two connection pair oblique sides 3 near the two stator core components are provided with semicircular concave-convex guiding positioning parts 8.

In this embodiment, when the straight iron core is formed by forward turning, the semicircular concave-convex guiding positioning part 8 is used for positioning and connecting the adjacent stator iron cores, so that the connection is convenient and the positioning is accurate, the problem of butt joint offset is avoided, the integrity of the stator iron core 10 formed by turning is improved, and the combination dimensional accuracy is ensured.

In this embodiment, the semicircular concave-convex guiding positioning portion 8 includes a semicircular groove 81 fixedly formed at the end of one connection pair hypotenuse 3 and a semicircular protrusion 82 fixedly formed at the end of the other connection pair hypotenuse 3, and the semicircular protrusion 82 is matched with the semicircular groove 81.

In this embodiment, the semicircular arc shape makes the bending and butt joint of the stator core 10 smoother.

In this embodiment, as shown in fig. 3, a first riveting point 6 of a punched lamination is provided on the end surface of the iron core yoke portion 1, and a second riveting point 7 of a punched lamination is provided on the end surface of the iron core tooth portion 2;

the number of the first buckling and riveting points 6 is two, the two first buckling and riveting points 6 are symmetrically distributed on the end faces of the iron core yoke part 1 on two sides of the central axis of the iron core yoke part 1, and the second buckling and riveting point 7 is located at the center of the end faces of the iron core tooth part 2.

In this embodiment, the stator core 10 is formed by stacking a plurality of stator laminations, and the first buckling and riveting point 6 and the second buckling and riveting point 7 facilitate connection and fixation of the plurality of stator laminations, so that the stator core 10 formed by the plurality of stator laminations has a more compact and reliable structure.

Further, a process positioning groove 5 is arranged on the outer side of the iron core yoke part 1, and the process positioning groove 5 is used for positioning the position of the punching lamination, so that the punching lamination is convenient and accurate to position and easy to manufacture.

In this embodiment, the number of the split stator cores is four, and the included angle between two connection pairs of oblique sides 3 connected with the same conjoined rib 18 is 90 degrees.

In this embodiment, the stator core 10 structure formed by separating and rounding four stator cores is suitable for the application of a quadrupole motor with low pole pair numbers.

The motor stator structure comprises the stator core 10 formed by clockwise rounding the stator straight iron core, an insulating framework arranged on the stator core 10, and a winding coil 40 wound on the framework.

In this embodiment, an insulating bobbin is used to separate the winding coil 40 from the stator core 10.

In this embodiment, the insulating frame includes a front frame 20 and a rear frame 30;

as shown in fig. 10 and 11, in the state of reverse turning of the stator straight iron core, the front bobbin 20 and the rear bobbin 30 are mounted on each stator iron core separately, and then the coil winding is performed, so that the stator iron core can simply and rapidly wind the required winding coil 40.

As shown in fig. 12 and 13, after winding the winding coil 40 is completed, the motor stator structure is obtained by forward rounding.

As shown in fig. 8 and 9, the rear frame 30 includes an insulating arc-shaped slot baffle 11 abutting against the pole shoe 4, an insulating insert plate 12 inserted in the slot between the core yoke 1 and the pole shoe 4, an insulating end plate 13 fixedly connecting the insulating arc-shaped slot baffle 11 and the insulating insert plate 12 in the slot, a slot plane baffle 16 fixedly connected to one end of the insulating insert plate 12 in the slot and flush with the insulating end plate 13, a circular power supply pin post 14 fixed on the slot plane baffle 16, a circular bridge wire blocking post fixed on the slot plane baffle 16 and located on both sides of the circular power supply pin post 14, and a wire hanging post 15 with a groove vertically fixed on the slot plane baffle 16.

In this embodiment, the split front skeleton 20 and rear skeleton 30 with reasonable skeleton structure design are convenient to assemble with the stator core 10, and the front skeleton 20 and the rear skeleton 30 are mutually inserted to form a concave uniform wire slot for winding the coil.

In this embodiment, the two outermost circular bridging wire blocking posts on the rear skeleton 30 are solid cylinders, the circular power supply lead pin posts 14 are hollow cylinders, pin holes for communicating the power supply leads with the winding coils are formed in the ends of the circular power supply lead pin posts 14, and the wire hanging posts 15 are arranged between adjacent circular power supply lead pin posts 14 at intervals.

In this embodiment, the circular bridge wire blocking posts at the outermost sides of the front skeleton 20 and the rear skeleton 30 are used to restrict the bridge wire in the wire slot when the bridge wire passes, so as to prevent the electric gap and the creepage distance from being insufficient due to the exposed slot; the round power supply lead pin post 14 of the rear framework is provided with pin holes so as to be convenient for connecting power supply leads by pins; the hanging wire pole 15 is used for fixing the bridge wire.

In this embodiment, the front skeleton 20 and the rear skeleton 30 have the same structure, so that the bridge wire of the coils with different phases can be hung on the front skeleton and the rear skeleton separately, and the inter-phase voltage breakdown is prevented.

Example two

As shown in fig. 14, the difference between this embodiment and the first embodiment is that the number of the split stator cores is eight, and the included angle between two connection pairs of oblique sides 3 connected by the same connecting rib 18 is 45 degrees.

Fig. 15 shows a state after the eight stator cores are split and rotated in the reverse direction, and fig. 16 shows a state after the eight stator cores are split and rotated in the forward direction.

In this embodiment, the stator core 10 structure formed by turning eight stator cores into circles in a split manner is suitable for the application of the high pole pair number eight-pole motor.

The embodiments of the present utility model are all preferred embodiments of the present application, and are not limited to four-pole and eight-pole motor applications, but are equally applicable to other low pole pair motors or other high pole pair motors. Therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims (10)

1. The utility model provides a positive and negative stator straight bar iron core of buckling which characterized in that: the stator core comprises more than three stator core split bodies, wherein the more than three stator core split bodies are in a connected block-shaped straight strip shape, and two adjacent stator core split bodies are connected through a connected rib (18);

the stator core split comprises a core yoke (1), pole shoes (4), a connection pair of bevel edges (3) and core teeth (2), wherein two ends of the core teeth (2) are respectively communicated with the core yoke (1) and the pole shoes (4), two connection pair of bevel edges (3) are arranged, and the two connection pair of bevel edges (3) are respectively symmetrically communicated with two end parts of the core yoke (1);

the connecting ribs (18) are fixedly communicated with two adjacent connecting pair bevel edges (3) adjacent to the two adjacent stator iron core split bodies, and two sides of each connecting rib (18) are respectively provided with a symmetrical and inwards concave first bending abdication arc angle (9) and a second bending abdication arc angle (17);

the first bending yielding circular arc angle (9) is positioned on one side, close to the pole shoe (4), of the connecting rib (18), and the second bending yielding circular arc angle (17) is positioned on the other side, far away from the pole shoe (4), of the connecting rib (18).

2. The positive and negative bending stator bar core according to claim 1, wherein: the ends of two connecting pair bevel edges (3) which are close to the two stator core components are provided with semicircular concave-convex guiding and positioning parts (8).

3. The positive and negative bending stator bar core according to claim 2, wherein: the semicircular concave-convex guiding and positioning part (8) comprises a semicircular groove (81) fixedly arranged at the end part of one connecting pair of bevel edges (3) and a semicircular convex block (82) fixedly arranged at the end part of the other connecting pair of bevel edges (3), and the semicircular convex block (82) is matched with the semicircular groove (81).

4. The positive and negative bending stator bar core according to claim 1, wherein: the end face of the iron core yoke part (1) is provided with a first buckling and riveting point (6) of the punching lamination, and the end face of the iron core tooth part (2) is provided with a second buckling and riveting point (7) of the punching lamination;

the number of the first buckling and riveting points (6) is two, the two first buckling and riveting points (6) are symmetrically distributed on the end faces of the iron core yokes (1) on two sides of the central axis of the iron core yokes (1), and the second buckling and riveting points (7) are located in the center of the end faces of the iron core teeth (2).

5. The positive and negative bending stator bar core according to claim 1, wherein: the number of the stator core split bodies is four, and the included angle of two connection pair bevel edges (3) connected with one connecting rib (18) is 90 degrees.

6. The positive and negative bending stator bar core according to claim 1, wherein: the number of the stator core split bodies is eight, and the included angle of two connection pair bevel edges (3) connected with one connecting rib (18) is 45 degrees.

7. A motor stator structure, characterized in that: comprising the stator bar core of any one of claims 1 to 6, an insulating bobbin mounted on the stator bar core, and a winding coil (40) wound on the bobbin.

8. A motor stator structure according to claim 7, wherein: the insulating framework comprises a front framework (20) and a rear framework (30);

the back skeleton (30) comprises an insulating arc-shaped wire slot baffle (11) propped against the pole shoe (4), an iron core slot insulating insertion plate (12) inserted between the iron core yoke (1) and the pole shoe (4), an insulating end plate (13) fixedly connected with the insulating arc-shaped wire slot baffle (11) and the iron core slot insulating insertion plate (12), a wire slot plane baffle (16) fixedly connected with one end of the iron core slot insulating insertion plate (12) and flush with the insulating end plate (13), a round power supply lead pin column (14) fixed on the wire slot plane baffle (16), round gap bridge wire blocking columns fixed on the wire slot plane baffle (16) and positioned on two sides of the round power supply lead pin column (14) and a wire hanging column (15) with grooves and vertically fixed on the wire slot plane baffle (16).

9. A motor stator structure according to claim 8, wherein: the two circular bridge wire blocking posts at the outermost side on the rear framework (30) are solid cylinders, the circular power supply lead pin posts (14) are hollow cylinders, pin holes for communicating power supply leads with winding coils are formed in the ends of the circular power supply lead pin posts (14), and wire hanging posts (15) are arranged between adjacent circular power supply lead pin posts (14) at intervals.

10. A motor stator structure according to claim 8, wherein: the front framework (20) and the rear framework (30) have the same structure.