阅读说明：本技术 槽极配合方案可调式转子铁芯、转子及电机 (Rotor core, rotor and motor with adjustable slot pole matching scheme ) 是由 左家禹 王周叶 黄侠昌 王志强 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种槽极配合方案可调式转子铁芯、转子及电机,属于电机技术领域,为解决现有转子铁芯研发加工周期长等问题而设计。本发明槽极配合方案可调式转子铁芯包括内铁芯和至少两组用于套设在内铁芯外侧的外铁芯,不同组的外铁芯上用于安装磁瓦的磁瓦槽的长度不等。本发明槽极配合方案可调式转子铁芯、转子及电机,当改变槽极配合方案时无需更换整个转子铁芯,无需重新开模,只需更换上磁瓦槽长度符合要求的外铁芯即可,降低了加工成本,提升了通用性,使用方便,为研发、生产提供较大的便利性,能在研发阶段节省成本、缩短周期；生产工艺简单易实现,可应用于批量生产中,通用性好。(The invention discloses a rotor core, a rotor and a motor with an adjustable slot pole matching scheme, belongs to the technical field of motors, and is designed for solving the problems of long research and development processing period and the like of the conventional rotor core. The adjustable rotor iron core comprises an inner iron core and at least two groups of outer iron cores sleeved outside the inner iron core, and the lengths of magnetic shoe grooves used for mounting magnetic shoes on the different groups of outer iron cores are different. According to the rotor core, the rotor and the motor with the adjustable slot pole matching scheme, when the slot pole matching scheme is changed, the whole rotor core does not need to be replaced, the mold does not need to be opened again, and only the outer core with the length meeting the requirement of the magnetic shoe slot needs to be replaced, so that the processing cost is reduced, the universality is improved, the use is convenient, great convenience is provided for research and development and production, the cost can be saved in the research and development stage, and the period can be shortened; the production process is simple and easy to realize, can be applied to batch production, and has good universality.)

1. The utility model provides a rotor core with adjustable slot utmost point cooperation scheme which characterized in that includes interior iron core (1) and at least two sets of cover of being used for establish the outer iron core in interior iron core (1) outside, different groups the length that is used for installing magnetic shoe groove (21) of magnetic shoe (3) on the outer iron core varies.

2. The slot-pole-fit-scheme-adjustable rotor core according to claim 1, wherein the outer core comprises a plurality of outer core sub-blocks (2), and each outer core sub-block (2) is provided with a magnetic shoe slot (21).

3. The rotor core with adjustable slot pole fit scheme according to claim 2, wherein two adjacent outer core blocks (2) are connected with the interpolar fixing groove (24) through the interpolar fixing lug (23) on the side edge.

4. Rotor core with adjustable slot pole fit according to claim 1, characterized in that a positioning structure is arranged between the inner core (1) and the outer core.

5. Rotor core with adjustable slot pole fit according to claim 4, characterized in that the positioning structure comprises a protrusion (11) and a recess (22) cooperating with the protrusion (11), the protrusion (11) being provided on one of the inner core (1) and the outer core, the recess (22) being provided on the other.

6. Rotor core with adjustable slot pole fit according to claim 5, characterized in that the protrusion (11) comprises a rod part (111) and a head part (112) arranged at the end of the rod part (111), the width of the head part (112) being larger than the width of the rod part (111).

7. Rotor core with adjustable slot pole fit according to claim 4, characterized in that the number of positioning structures is equal to a common multiple or common divisor of the number of magnetic shoe slots (21).

8. Rotor core with adjustable slot pole fit according to any of claims 1 to 7, characterized in that a buffer layer (5) made of an elastic material is arranged between the inner core (1) and the outer core.

9. A rotor comprising magnetic tiles (3), characterized in that it further comprises a rotor core with adjustable slot pole fit according to any of claims 1 to 8, the magnetic tiles (3) being arranged in a magnetic tile slot (21), the outside of the magnetic tiles (3) and the rotor core being coated with an injection molded layer (6).

10. An electrical machine comprising a stator, and further comprising a rotor according to claim 9, said rotor being disposed internally of said stator.

Technical Field

The invention relates to the technical field of motors, in particular to a rotor core with an adjustable slot pole matching scheme, a rotor comprising the rotor core and a motor comprising the rotor.

Background

The permanent magnet motor is widely applied and mainly structurally comprises a stator and a rotor. As shown in fig. 1, the rotor includes a rotor core 1 ' and a plurality of magnetic shoes 2 ' mounted on the rotor core 1 '.

According to different product requirements, different slot pole matching schemes are required to be designed for the permanent magnet motor. At present, the slot pole matching of a stator and a rotor of a permanent magnet motor is determined by a stator core and a rotor core, and the die sinking of a punching sheet and the cores is carried out according to the requirement. When different slot pole matching schemes are needed, a set of die needs to be newly made to process the iron core, so that the cost is increased, the full utilization of iron core materials is not facilitated, and the universality is poor; in addition, when the damping rotor is needed, the iron core of the damping rotor needs to be re-manufactured, the number of required dies is large, the cost is high, and the development period is long.

Disclosure of Invention

One objective of the present invention is to provide an adjustable rotor core with slot pole matching scheme, which does not need to re-make a set of mold to process the core when different slot pole matching schemes are required, and has low manufacturing cost and short research and development processing period.

Another object of the invention is to propose a rotor that is low in cost and has a short development cycle.

It is a further object of the present invention to provide a motor that is low in cost and has a short development cycle.

To achieve the purpose, on one hand, the invention adopts the following technical scheme:

the utility model provides a rotor core with adjustable slot utmost point cooperation scheme, includes interior iron core and at least two sets of cover that are used for and establish the outer iron core in the interior iron core outside, different group the length that is used for installing the magnetic shoe groove of magnetic shoe on the outer iron core varies.

Particularly, the outer iron core comprises a plurality of outer iron core sub-blocks, and each outer iron core sub-block is provided with a magnetic shoe groove.

Particularly, two adjacent outer iron core sub-blocks are connected with the interpolar fixing grooves through the interpolar fixing lugs on the side edges.

In particular, a positioning structure is arranged between the inner iron core and the outer iron core.

In particular, the positioning structure includes a protruding portion provided on one of the inner core and the outer core and a recessed portion provided on the other, which is fitted with the protruding portion.

In particular, the protrusion comprises a rod part and a head part arranged at the end of the rod part, and the width of the head part is larger than that of the rod part.

In particular, the number of said positioning structures is equal to a common multiple or common divisor of the number of said magnetic shoe grooves.

In particular, a buffer layer made of an elastic material is disposed between the inner core and the outer core.

On the other hand, the invention adopts the following technical scheme:

the utility model provides a rotor, includes the magnetic shoe, still includes the rotor core with adjustable foretell slot pole cooperation scheme, the magnetic shoe sets up in the magnetic shoe groove the magnetic shoe with the outside cladding of rotor core has the layer of moulding plastics.

In another aspect, the invention adopts the following technical scheme:

the motor comprises a stator and the rotor, wherein the rotor is arranged in the stator in a penetrating mode.

The lengths of the magnetic shoe grooves for mounting the magnetic shoes on the different groups of the outer iron cores of the adjustable rotor iron core with the groove pole matching scheme are different, when the groove pole matching scheme is changed (the number of the rotor poles is changed), the whole rotor iron core does not need to be replaced, the mold opening is not needed again, only the outer iron core with the length of the magnetic shoe groove meeting the requirement needs to be replaced, the processing cost is reduced, the universality is improved, the use is convenient, great convenience is provided for research and development and production, the cost can be saved in the research and development stage, and the period can be shortened; the production process is simple and easy to realize, can be applied to batch production, and has good universality.

The rotor comprises the rotor core with the adjustable slot pole matching scheme, and the motor comprises the rotor, so that different outer cores can be selected according to the requirements of different stators, the outer diameter of the rotor, the outer arc size of the rotor core and the like can be adjusted, and the performance of the motor is improved.

Drawings

FIG. 1 is a schematic structural view of a prior art rotor;

FIG. 2 is a schematic structural view of a rotor provided in accordance with an embodiment of the present invention;

fig. 3 is a schematic structural diagram of an inner core according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a plurality of outer core sub-blocks according to an embodiment of the present invention;

fig. 5 to 7 are schematic structural views of three types of rotor cores according to embodiments of the present invention;

fig. 8 is a schematic structural diagram of a rotor with buffer layers and injection molded layers added according to an embodiment of the present invention.

In the figure:

1', a rotor core; 2', magnetic shoe;

1. an inner core; 2. an outer iron core sub-block; 3. a magnetic shoe; 4. punching riveting points; 5. a buffer layer; 6. an injection molding layer; 11. a projection; 21. a magnetic shoe groove; 22. a recessed portion; 23. an interelectrode fixing projection; 24. an interelectrode fixing groove; 111. a rod portion; 112. a head portion.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment discloses a rotor core with an adjustable slot pole matching scheme, a rotor comprising the rotor core and a motor comprising the rotor. Specifically, the motor includes stator and rotor, and the rotor wears to establish in the inside of stator. As shown in fig. 2 to 8, the rotor includes a rotor core and the magnet tiles 3, and the magnet tiles 3 are disposed in the magnet tile slots 21 of the rotor core. The outer sides of the magnetic shoe 3 and the rotor core are coated with an injection molding layer 6, and the injection molding layer 6 can fix the whole rotor. Of course, the structure of the over-molding layer 6 can be replaced by an adhering manner according to the requirements of cost and reliability.

The rotor core includes that interior iron core 1 and at least two sets of outer iron cores that are used for the cover to establish in the interior iron core 1 outside, and the length that is used for installing the magnetic shoe groove 21 of magnetic shoe 3 is not equal on the outer iron core of different groups. When the slot pole matching scheme is changed (the number of rotor poles is changed), the whole rotor core does not need to be replaced, the mold does not need to be opened again, and only the outer cores with the number (length) of the upper magnetic shoe slots 21 meeting the requirement need to be replaced. That is, the rotor core can realize that the number of poles of the rotor is adjustable by changing the structure and the number of poles of the outer core, so that the effect of matching different slot poles is achieved, and the appearance of the rotor core can be changed. The processing cost is reduced, the universality is improved, the use is convenient, great convenience is provided for research and development and production, the cost can be saved in the research and development stage, and the period can be shortened; the production process is simple and easy to realize, can be applied to batch production, and has good universality. Different outer iron cores are selected according to the requirements of different stators, so that the outer diameter of the rotor and the outer arc size of the rotor iron core can be adjusted, and the performance of the motor is improved.

The outer iron core can be of an annular structure, and the outer iron core is sleeved on the outer side of the inner iron core 1 after a rotor with a proper number of poles is selected. In order to reduce the processing difficulty, the outer iron core can be designed into a split type. That is, the outer core includes a plurality of outer core sub-blocks 2, and each outer core sub-block 2 is provided with one shoe groove 21. In fig. 4, a, b, and c represent the outer core blocks 2 having different numbers of poles, respectively, and the larger the number of rotor poles, the shorter the magnetic shoe grooves 21. Fig. 5 to 7 show a rotor core obtained by combining the inner core 1 and the outer core sub-blocks 2 with different numbers of poles, where fig. 5 shows a six-pole rotor structure, fig. 6 shows an eight-pole rotor structure, and fig. 7 shows a twelve-pole rotor structure.

In order to ensure that the outer iron core obtained by assembling the plurality of outer iron core sub-blocks 2 is stable enough, two adjacent outer iron core sub-blocks 2 are connected with the inter-electrode fixing groove 24 through the inter-electrode fixing lug 23 on the side edge. When the iron core is installed, the inter-electrode fixing lugs 23 on the outer iron core blocks 2 are aligned with and buckled with the inter-electrode fixing grooves 24 on the adjacent outer iron core blocks 2, so that the outer iron core blocks 2 are prevented from moving along the radial direction. Punching riveting points 4 are arranged on the inner iron core 1 and the outer iron core, and a plurality of punching sheets are stacked in sequence and then riveted to form the rotor.

On the basis of the structure, a positioning structure is arranged between the inner iron core 1 and the outer iron core, so that the outer iron core is prevented from being separated from the inner iron core 1. Especially when outer iron core is split type structure, can install outer iron core subblock 2 on inner iron core 1 one by one, utilize location structure to fix the outer iron core subblock 2 that finishes of installing earlier, avoid last outer iron core subblock 2 to take place unexpected the removal when installing next outer iron core subblock 2.

The specific shape of the positioning structure is not limited, and the stable connection of the inner iron core 1 and the outer iron core can be realized. Preferably, the positioning structure comprises a convex part 11 and a concave part 22, and the number and the shape of the concave part 22 are respectively matched with those of the convex part 11. The convex part 11 can be uniformly arranged on the inner iron core 1, the concave part 22 is uniformly arranged on the outer iron core, the convex part 11 can be arranged on the outer iron core, the concave part 22 is arranged on the inner iron core 1, a part of the convex part 11 can be arranged on the inner iron core 1, the other part of the convex part 11 is arranged on the outer iron core, the concave part 22 is arranged corresponding to the convex part 11, and the functions and effects of the three structures are the same.

The specific structure of the protruding portion 11 is not limited, and it is sufficient that it can be stably interlocked with the recessed portion 22. Preferably, the protruding portion 11 includes a shaft portion 111 and a head portion 112 disposed at the end of the shaft portion 111, and the width of the head portion 112 is larger than that of the shaft portion 111. The shape of the concave part 22 is a groove composed of a rod shape and a semicircle, the concave shape is just matched with the convex shape on the convex part 11, and the convex part 11 can be embedded in the concave part 22 after installation, thereby realizing the stable connection of the inner iron core 1 and the outer iron core.

The specific number of the positioning structures is not limited, the positioning structures can be individually designed according to the size of the rotor, and the inner iron core 1 and the outer iron core can be stably connected. Preferably, the number of the positioning structures is equal to the common multiple or common divisor of the number of the magnetic shoe grooves 21, the connected structure is more stable, and the rotor has better balance when rotating.

On the basis of the above structure, as shown in fig. 8, the inner core 1 and the outer core are in a clearance fit structure, and an elastic material such as rubber is added into the clearance to form the buffer layer 5. The buffer layer 5 can play a role in buffering the inner iron core 1 and the outer iron core, so that the effects of damping and reducing noise of the rotor are achieved, and the damping rotor with variable pole number is formed. Certainly, when the noise and vibration of the whole machine are small, the buffer layer 5 is not formed, and the production cost is reduced.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.