CN116345732A - Stator assembly, stator and motor - Google Patents

Abstract

The application provides a stator assembly, a stator and a motor. The stator assembly comprises a plurality of T-shaped splicing blocks which can be spliced into a circle; each T-shaped splicing block is formed by splicing a tooth part and a yoke part; the first framework comprises a ring body, a plurality of through holes are formed in the side wall of the ring body, the periphery of each through hole extends outwards along the radial direction to form a winding tube, and the outside of the winding tube is used for winding a winding; the tooth part is arranged in the winding tube in a matching way. The utility model discloses cut apart traditional T type iron core piece once more, tooth is pieced together circularly through annular first skeleton, need not the artifical rounding process of follow-up procedure, has reduced the human error.

Description

Stator assembly, stator and motor

Technical Field

The application belongs to the technical field of motors, and particularly relates to a stator assembly, a stator and a motor.

Background

The stator structure of the current brushless direct current motor is characterized in that inward radial teeth are arranged on the inner wall of an annular yoke part in a conventional structure, but for the convenience of winding, the annular teeth are divided, each arc section is provided with one tooth, a plurality of T-shaped structures are formed, and a plurality of T-shaped split stators are spliced into a circle to form the stator. The split type stator structure has the problem that the roundness of the inner circle of the split type stator is poor after the split type stator is round, the split type stator is spliced by mutually matching the yoke parts of the stator core at present, and the effect of the split type stator after the split type stator is spliced is often not ideal due to the tolerance existing in the process of producing the stator core.

Disclosure of Invention

Therefore, the application provides a stator assembly, a stator and a motor, and can solve the problem that the roundness of the inner circle of the split stator is poor after the split stator is rounded in the prior art.

To solve the above-mentioned problems, the present application provides a stator assembly, comprising:

the T-shaped splicing blocks are provided with a plurality of splicing blocks and can be spliced into a circle; each T-shaped splicing block is formed by splicing a tooth part and a yoke part;

the first framework comprises a ring body, a plurality of through holes are formed in the side wall of the ring body, the periphery of each through hole extends outwards along the radial direction to form a winding tube, and the outside of the winding tube is used for winding a winding; the tooth part is arranged in the winding tube in a matching way.

Optionally, the first framework is made of injection molding materials and is integrally formed with the tooth part.

Optionally, a circular wire passing groove is arranged at one axial end of the ring body and is used for accommodating the bridge wire; the wire passing groove and the ring body have the same circle center.

Optionally, the wire passing grooves are at least provided with three wire passing grooves with different radiuses, and the three wire passing grooves are sequentially arranged along the axial direction of the ring body according to the radius.

Optionally, a flange is provided at an outer end of the bobbin, which can prevent the winding from being separated from the bobbin from the outer end.

Optionally, the stator assembly further includes a second skeleton, and the second skeleton is overmolded outside the yoke portion; the first framework and the second framework are arranged in a clamping manner.

Optionally, a buckle is arranged on the flanging, and a mounting hole is arranged on the second framework; or the flanging is provided with a mounting hole, the second framework is provided with a buckle, and the buckle is matched and clamped in the mounting hole.

Optionally, a terminal block is arranged on the second framework and is used for connecting the wire ends of the windings.

Optionally, opposite end surfaces of the tooth portion and the yoke portion are respectively provided with an uneven surface, and are mutually spliced.

According to another aspect of the present application, there is provided a stator comprising a stator assembly as described above.

According to a further aspect of the present application there is provided an electric machine comprising a stator assembly as described above or a stator as described above.

The application provides a stator assembly, include: the T-shaped splicing blocks are provided with a plurality of splicing blocks and can be spliced into a circle; each T-shaped splicing block is formed by splicing a tooth part and a yoke part; the first framework comprises a ring body, a plurality of through holes are formed in the side wall of the ring body, the periphery of each through hole extends outwards along the radial direction to form a winding tube, and the outside of the winding tube is used for winding a winding; the tooth part is arranged in the winding tube in a matching way.

The utility model discloses cut apart traditional T type iron core piece once more, tooth is pieced together circularly through annular first skeleton, need not the artifical rounding process of follow-up procedure, has reduced the human error.

Drawings

Fig. 1 is a schematic structural view of a stator according to an embodiment of the present application;

FIG. 2 is a schematic bottom view of a stator according to an embodiment of the present disclosure;

FIG. 3 is a diagram of a first molded stator structure injection molded with teeth and a first skeleton according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a second skeleton according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of another structure of a second skeleton according to an embodiment of the present disclosure;

FIG. 6 is a schematic view of a second skeleton according to an embodiment of the present disclosure;

FIG. 7 is a split schematic of a T-shaped tile according to an embodiment of the present application;

FIG. 8 is a schematic structural view of a first skeleton according to an embodiment of the present disclosure;

FIG. 9 is a first bobbin winding assembly view of an embodiment of the present application;

FIG. 10 is a bottom view of a stator assembly of an embodiment of the present application;

FIG. 11 is a schematic diagram of a stator winding sequence and wiring scheme according to an embodiment of the present application;

fig. 12 is a schematic structural view of a terminal according to an embodiment of the present application;

fig. 13 is another schematic structural view of a terminal according to an embodiment of the present application.

The reference numerals are expressed as:

1. a yoke; 1-1, stator outer punching sheet A;1-2, stator outer punching sheet B; 2. a first framework; 2-1, outer skeleton mounting holes; 3. a centralized winding; 3-1, a U phase bridging line; 3-2, V phase bridging lines; 3-3, W phase bridging lines; 3-4, U phase line heads; 3-5, V phase line heads; 3-6, W phase line head; 3-7, U phase line tail; 3-8, V phase tail; 3-9, W phase tail; 4. a tooth portion; 4-1, stator inner punching sheet A;4-2, stator inner punching sheet B; 5. a first skeleton; 5-1, a framework outer baffle; 5-2, a wire passing groove is formed in the outer baffle of the framework; 5-3, connecting part outside the framework; 5-4, buckling; 5-5, a wire groove is formed in the framework; 6. a triple puncture terminal; 6-1, a triple puncture terminal U-shaped groove; 7. a second framework II; 7-1, a triple terminal block; 8. independently piercing the terminals; 8-1, independently puncturing the terminal U-shaped groove; 8-2, a wiring piece; 9. a second framework III; 9-1, independent terminal blocks; 10. a plastic-coated stator is internally arranged; 11. a common plastic-coated stator; 12. the triple terminal seat is covered with a plastic stator; 13. the independent terminal seat is covered with a plastic stator.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Referring now to fig. 1-13 in combination, a stator assembly according to an embodiment of the present application includes:

the T-shaped splicing blocks are provided with a plurality of splicing blocks and can be spliced into a circle; each T-shaped splicing block is formed by splicing a tooth part 4 and a yoke part 1;

the first framework 5 comprises a ring body, a plurality of through holes are formed in the side wall of the ring body, the periphery of each through hole extends outwards along the radial direction to form a winding tube, and the outside of the winding tube is used for winding a winding; the teeth 4 are arranged in the winding tube in a matched manner.

The application cuts apart traditional T type iron core piece once more, and tooth 4 is pieced together circularly through annular first skeleton 5, need not the manual work round process of follow-up process, has reduced the human error.

Because the tooth part 4 and the yoke part 1 are of split structures, the tooth part 4 is arranged in the through hole of the first framework 5 in a penetrating way, and the tooth part 4 can be penetrated out of the first framework 5 based on the fact that the tooth part 4 comprises a shoe structure, so that the tooth shoe is clamped on the inner wall of the first framework 5, and in order to ensure the flatness of the assembled inner wall surface, the tooth shoe can be punched outwards in the through hole in advance to form a dent for accommodating the tooth shoe; the tooth part 4 is convenient to assemble, has extremely high roundness, improves the machining precision, and can effectively solve the noise problem caused by insufficient roundness.

In addition, the traditional winding procedure is generally performed in the stator inner circle, the notch of the stator core is often smaller, winding is difficult, and when the slot filling rate of the motor scheme is higher, the phenomenon of wire breakage and wire damage often occurs, so that potential safety hazards exist.

The tooth part 4 and the yoke part 1 are of split structures, the winding tube is located on the peripheral wall of the ring body, and the stator winding space is larger and more convenient. Compared with the traditional winding in the inner circle, the winding in the open space does not need to worry about the problem that the notch is small to cause the interference of the iron core and the winding equipment, and the slot filling rate of the windable outer circle is higher.

In some embodiments, the first skeleton 5 is made of injection molding material, and is integrally formed with the tooth portion 4.

The first framework 5 is manufactured by adopting injection molding materials, so that the first framework 5 and the tooth parts 4 can be integrally formed, and the tooth parts 4 are spliced into a circle on a tool during injection molding, so that the roundness of the inner circle of the stator is effectively ensured.

In some embodiments, a circular wire passing groove is arranged on one axial end of the ring body and is used for accommodating a bridge wire; the wire passing groove and the ring body have the same circle center. Preferably, the wire passing grooves are at least provided with three wire passing grooves with different radiuses, and the three wire passing grooves are sequentially arranged along the axial direction of the ring body according to the radius.

Each splicing block is provided with two winding taps after the traditional splicing block stator is wound, a welding circuit board and a direct welding winding tap are connected between the splicing block stator and the stator, the cost of the circuit board is high, the welding procedure is complex, the welding winding taps need to be firstly arranged, then polished and then welded, the time and the labor are wasted, and the labor cost is high.

The wire casing is crossed to direct setting on first skeleton 5 of this application, and especially a plurality of wire casing structures of crossing can guarantee to adopt the chain to wind the mode and come the wire winding, and winding back phase is only two winding taps, and the quantity of winding tap has significantly reduced directly cancels the wiring process, has effectively reduced staff's the operation degree of difficulty.

In some embodiments, the outer end of the bobbin is provided with a flange that resists removal of the winding from the bobbin from the outer end.

The flanging structure is adopted, so that the stability of the winding on the winding tube is improved, and the structural stability of the whole stator is improved.

In some embodiments, the stator assembly further comprises a second skeleton, wherein the second skeleton is molded outside the yoke part 1; the first framework 5 and the second framework are arranged in a clamping manner. Preferably, the flanging is provided with a buckle 5-4, and the second framework is provided with a mounting hole; or the flanging is provided with a mounting hole, the second framework is provided with a buckle 5-4, and the buckle 5-4 is clamped in the mounting hole in a matching way.

In the traditional split stator structure, the framework is easy to loosen after being assembled, and most of the assembly is in clearance fit, so that staff operation is facilitated, but the iron core of the assembled framework has the risk of loosening the framework; the clamping assembly is arranged on the first framework 5 and the second framework, so that the frameworks are easy to assemble and are locked and cannot be loosened after being assembled.

In some embodiments, a terminal block is provided on the second frame for connecting the wire ends of the windings.

The winding needs to be welded in the traditional structure, the winding tap needs to be polished with paint skin before welding, the burr of a welded junction needs to be cut after welding, and the welding spot is protected by using an insulating sleeve, so that the operation of staff is inconvenient.

The terminal is adopted to puncture and connect the winding and even the power line, welding is not needed, the operation is simple and convenient, for example, different puncture terminals are crimped, and different connection modes can be realized; such as: three wire ends are in pressure connection with the triple puncture terminal 6 to the triple terminal seat 7-1, so that three-phase conduction can be realized; the wire tail is pressed and connected with the independent puncture terminal 8 to the independent terminal seat 9-1, and the independent puncture terminal 8 is inserted into the power wire terminal, so that an external power supply can be connected.

In some embodiments, the opposite end surfaces of the tooth portion 4 and the yoke portion 1 are respectively provided with an uneven surface, and are mutually spliced.

The uneven structural surfaces are adopted for splicing, and after splicing, the axial and tangential displacement and the axial, radial and tangential rotation of the tooth part 4 and the yoke part 1 are limited, and only radial movement can be carried out, so that the structural stability of the T-shaped splicing block is improved.

According to another aspect of the present application, there is provided a stator comprising a stator assembly as described above.

The stator comprises a yoke part 1, a first second framework 2, a concentrated winding 3, a tooth part 4, a first framework 5, a triple piercing terminal 6, a second framework 7, an independent piercing terminal 8 and a third second framework 9.

The stator assembly sequence is that firstly, the tooth part 4 is placed on an injection mould of the first framework 5 according to assembly position, so that the first framework 5 and the tooth part 4 are integrally injection-molded into an inner plastic-coated stator 10; then winding a centralized winding 3 on the inner plastic-coated stator 10, wherein the wound centralized winding 3 can form line heads and line tails 3-4 to 3-9 on the inner plastic-coated stator 10; the first framework 2 and the yoke part 1 are integrally injection molded into a common plastic-covered stator 11, and the second framework 7 and the third framework 9 are integrally injection molded with the yoke part 1 into a triple terminal seat plastic-covered stator 12 and an independent terminal seat plastic-covered stator 13; and assembling a common plastic-covered stator 11, a triple terminal block plastic-covered stator 12 and an independent terminal block plastic-covered stator 13 at corresponding positions according to a stator wiring schematic diagram, putting the wire ends and the wire tails into corresponding terminal blocks, and finally correspondingly crimping the triple puncture terminal 6 and the independent puncture terminal 8 in the terminal blocks of the triple terminal block plastic-covered stator 12 and the independent terminal block plastic-covered stator 13 to finish the manufacturing of the stator.

The tooth part 4 is formed by staggered lamination of a stator inner punching sheet A4-1 and a stator inner punching sheet B4-2; correspondingly, the yoke part 1 is formed by staggering and laminating a stator outer punching sheet A1-1 and a stator outer punching sheet B1-2; wherein, the concave-convex part of the stator inner punching sheet A4-1 can be mutually spliced with the concave-convex part of the stator outer punching sheet A1-1; similarly, the concave-convex part of the stator inner punching sheet B4-2 can be mutually spliced with the concave-convex part of the stator outer punching sheet B1-2; therefore, the number of stator inner punches A4-1 in the teeth 4 should be identical to the number of stator outer punches A1-1 in the yoke 1, and the number of stator inner punches B4-2 in the teeth 4 should be identical to the number of stator outer punches B1-2 in the yoke 1. The teeth 4 and the yoke 1 are joined together by the concave-convex portions of the punched pieces at the time of assembly, and the axial and tangential displacements and the axial, radial and tangential rotations of the teeth 4 and the yoke 1 are restricted after the joining, so that only radial movements can be performed.

The first framework 5 is of an injection molding structure, 12 teeth 4 are uniformly distributed in the first framework, and the first framework and the teeth 4 are combined to form an inner plastic-coated stator 10 after injection molding. The first framework 5 is integrally formed with the tooth part 4 in an injection molding mode, so that the size and the precision of the inner circle of the tooth part 4 can be effectively ensured, and the motor noise is benefited; and the injection molding mode replaces the procedure of installing the framework, so that the operation difficulty of staff is reduced. The first framework 5 is uniformly distributed with 12 framework outer connecting parts 5-3 which play a role in connecting the first framework 5 with the stator outer frameworks 2, 7 and 9 and supporting the centralized winding 3; the top and the bottom of each framework outer connecting part 5-3 are respectively provided with 1 framework outer baffle plate 5-1, and the baffle plates can prevent enameled wires from running out of the groove during winding; each framework outer baffle 5-1 positioned at the bottom is provided with a framework outer baffle wire passing groove 5-2 through which the wire ends and the wire tails after winding can reach the terminal seat of the outer framework; the two sides of each framework outer baffle 5-1 are respectively provided with an arrow-shaped buckle 5-4, and the buckles can smoothly pass through the outer framework mounting holes 2-1 and effectively lock the two wings of the rear arrow buckle when the stator outer frameworks 2, 7 and 9 are assembled, so that the outer frameworks are prevented from falling off. 3 layers of wire passing grooves 5-5 in the framework are respectively arranged at the inner circle part of the top of the first framework 5, namely an upper layer, a middle layer and a lower layer, and the wire passing grooves can realize a winding mode of chain winding, namely one phase of winding is completed by one enamelled wire, and wiring is not needed between windings of the same phase after winding is completed, so that the operation difficulty of staff is greatly reduced; the wire passing grooves on different layers pass through bridge passing wires on different phases, so that inter-phase ignition is prevented.

The concentrated winding 3 is wound on the inner plastic coated stator 10 according to the stator winding sequence and wiring schematic diagram. The U-phase bridge wire 3-1 of the centralized winding 3 passes through the lower layer wire passing through the wire groove 5-5 in the framework, and the like, the V-phase bridge wire 3-2 passes through the middle layer wire passing through the wire groove 5-5 in the framework, and the W-phase bridge wire 3-3 passes through the upper layer wire passing through the wire groove 5-5 in the framework, so that the winding process is completed.

The second framework I2 is also of an injection molding structure, 1 yoke part 1 is wrapped in the second framework I, and the second framework I and the yoke part 1 are combined into a common plastic-coated stator 11 after injection molding; the top and the bottom of the first framework 2 are respectively provided with 2 outer framework mounting holes corresponding to the arrow-shaped buckles 5-4 of the first framework 5. The second framework II 7 is provided with a triple terminal seat 7-1 on the top on the basis of the first framework, 3 wire heads can be placed in the terminal seat, each hole can be in pressure connection with 1 piercing terminal, when the triple piercing terminal 6 is in pressure connection, the 3 wire heads in the terminal seat are connected and conducted, and after injection molding, the terminal seat and the yoke part 1 are combined to be called as a triple terminal seat plastic-covered stator 12; similarly, the second skeleton three 9 is provided with an independent terminal seat 9-1 at the top, 1 wire end can be placed inside the terminal seat, 1 independent piercing terminal 8 is pressed, and the second skeleton three and the yoke 1 are combined after injection molding to be called an independent terminal seat plastic-covered stator 13.

And winding a centralized winding 3 on the inner plastic coated stator 10 according to the winding sequence of the stator and the wiring schematic diagram five, wherein the wire ends are respectively U-phase wire ends 3-4 at 1U, V phase wire ends 3-5 at 2V, W phase wire ends 3-6 at 3W, and the wire tails are respectively U-phase wire tails 3-7 at 10U, V phase wire tails 3-8 at 11V, W phase wire tails 3-9 at 12W. The wire ends are connected with the public end and the wire tails are respectively connected with the power wire, so that the triple terminal block plastic-covered stator 12 is assembled at the position of 2V in the inner plastic-covered stator 10, the independent terminal block plastic-covered stator 13 is assembled at the positions of 10U, 11V and 12W, and the common plastic-covered stator 11 is assembled at the other positions. The inner plastic-coated stator 10 is mounted to the outer framework mounting hole 2-1 through the arrow-shaped buckle 5-4 to complete the assembly between the frameworks. The U-phase wire head 3-4, the V-phase wire head 3-5 and the W-phase wire head 3-6 are respectively arranged in a triple terminal seat 7-1 in a triple terminal seat plastic-coated stator 12; the U-phase line tail 3-7, the V-phase line tail 3-8 and the W-phase line tail 3-9 are respectively placed in the independent terminal seat 9-1 of the independent terminal seat plastic-covered stator 13, and the procedure of installing the plastic-covered stator is completed.

The bottom of the triple puncture terminal 6 is provided with 3 independent puncture terminal U-shaped grooves 6-1, and the U-shaped grooves can smoothly scratch the paint skin on the surface of the wire head in the crimping process so as to lead the wire head and the terminal to be connected and conducted; similarly, the bottom of the independent piercing terminal 8 is provided with 1 triple piercing terminal U-shaped groove 8-1; a lug 8-2 is provided on the top of the individual piercing terminal 8, which can be fitted with a terminal connection power cord. Finally, the triple puncture terminal 6 is pressed and connected to the triple puncture terminal seat 7-1, and the independent puncture terminal 8 is pressed and connected to the independent puncture terminal seat 9-1, so that the stator is manufactured.

In summary, the stator core assembly mode of the application, the production method of the inner skeleton structure and the stator has the advantages of high manufacturing precision, convenient operation and stable structure compared with the traditional iron core, skeleton and stator.

According to a further aspect of the present application there is provided an electric machine comprising a stator assembly as described above or a stator as described above.

It is easy to understand by those skilled in the art that the above embodiments can be freely combined and overlapped without conflict.

The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that, for a person skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims (11)

1. A stator assembly, comprising:

the T-shaped splicing blocks are provided with a plurality of splicing blocks and can be spliced into a circle; each T-shaped splicing block is formed by splicing a tooth part (4) and a yoke part (1);

the first framework (5) comprises a ring body, a plurality of through holes are formed in the side wall of the ring body, the periphery of each through hole extends outwards along the radial direction to form a winding tube, and the outside of the winding tube is used for winding a winding; the teeth (4) are arranged in the winding tube in a matched manner.

2. Stator assembly according to claim 1, characterized in that the first armature (5) is made of injection-molded material, being integrally formed with the teeth (4).

3. A stator assembly according to claim 1 or claim 2 wherein a circular wire slot is provided at one axial end of the ring body for receiving a wire bridge; the wire passing groove and the ring body have the same circle center.

4. A stator assembly according to claim 3 wherein said wire passing grooves are provided with at least three different radii, said three wire passing grooves being arranged in sequence according to the radial size along the axis of said ring body.

5. The stator assembly of claim 4 wherein the outer end of the bobbin is provided with a flange that resists removal of the winding from the bobbin from the outer end.

6. The stator assembly according to claim 5, further comprising a second armature, said second armature being overmolded outside the yoke (1); the first framework (5) and the second framework are arranged in a clamping way.

7. The stator assembly according to claim 6, wherein the flange is provided with a buckle (5-4) and the second frame is provided with a mounting hole; or the flanging is provided with a mounting hole, the second framework is provided with a buckle (5-4), and the buckle (5-4) is clamped in the mounting hole in a matching way.

8. A stator assembly according to claim 6 or 7, wherein the second armature is provided with terminal blocks for connecting the ends of the windings.

9. Stator assembly according to claim 8, characterized in that the facing end surfaces of the teeth (4) and yoke (1) are each provided with a relief and are mutually split.

10. A stator comprising a stator assembly according to any one of claims 1 to 9.

11. An electric machine comprising a stator assembly according to any one of claims 1-9 or a stator according to claim 10.

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