TWM461250U - Internal rotation type stator - Google Patents

Description

Internal rotation stator

This creation is a stator structure of a motor, in particular a motor stator that can effectively improve the output performance of the motor and increase the productivity.

According to the current common motor structure, it can be divided into an inner rotor or an outer rotor type, and its structure is mainly composed of a rotor and a stator wound with an armature coil; wherein the rotor has a permanent magnet, taking the inner rotor as an example, The rotor system is oppositely disposed at the central shaft hole of the stator. When the motor is running, the armature coil wound by the stator first generates a magnetic field, and interacts with the permanent magnetic field of the rotor to generate an electromagnetic force, so that the rotor is driven to operate.

As for the structure of the inner-rotating stator, there is mainly a body 10 having an annular shape, a plurality of yoke portions 11 are provided on the periphery of the body 10, and a stator extending toward the center of the body 10 is provided at the center of each yoke portion 11. The teeth 12 are formed at a rear end of each of the stator teeth 12 to form a shoe portion 13 which is formed in a shaft hole shape, and the enamel wire is passed through the gaps 14 of the two shoe portions 13 of the adjacent stator teeth 12 by means of a die and a winding machine. Winding on the bobbin of the inner-rotating stator according to a preset winding direction, and stacking the coil group 15 having a thickness, and in use, through the control of the control circuit, the inner-rotating stator forms an interaction electromagnetic field with the rotor. Make the motor work properly.

However, the conventional internal rotation type stator is formed by stamping a single annular steel sheet by stamping technology, and then stacking several identical annular steel sheets into a frame having an appropriate thickness, which is in the shape of a ring. During the stamping process of the sheet, the middle portion of the inner edge of each annular steel sheet and the peripheral portion of the outer edge become waste materials, The distance between the steel sheets and the strips of each of the annular steel sheets is sufficient, and the proportion of scraps is as high as 70%, resulting in waste of material formation and an increase in manufacturing cost.

In particular, similar to the conventional inner-rotating stator, in the winding process of the coil assembly, it is necessary to pass the enameled wire through the gap 14 of the two shoe portions 13 of the adjacent stator teeth 12 along the central shaft hole of the annular body 10. The winding method is not only difficult to process, but also has a long winding time and a low tank full rate, and the cost of the winding equipment required for investment is also high. Therefore, how to effectively reduce the related manufacturing costs of the conventional internal rotating stator and increase the production capacity of the conventional internal rotating stator have been the subject of academic and industrial circles for many years.

In view of this, the present invention provides an internal rotary stator that can effectively improve motor performance and increase productivity.

In order to achieve the goal, the internal rotary stator of the present invention is composed of a plurality of strips of steel strips which are stacked in a plurality of strips and are combined into a strip-shaped semi-finished product, and after the predetermined stator teeth are wound, the strip-shaped semi-finished products are further Each of the steel strips is annularly formed in a manner of being connected at both ends; wherein each of the steel strips has a plurality of integrally connected connecting sections for being stacked in a yoke portion opposite to the outer periphery of the inner rotating stator, in each connecting section The central portion is extended with a predetermined length extending portion to be stacked as a stator tooth of the iron core, and a predetermined wide curved arc portion is provided at the end of each extending portion to be relatively located in the inner rotating stator The shoe portion of the ring, and the curved portion of the end portion of each of the extending portions is widened when the strip-shaped semi-finished product is wound into a circular shape to maintain a predetermined distance from the adjacent curved portion; and each of the steel strips A relatively narrow width extending section is disposed between the two relatively wide extending sections, and the inner rotating stator is wound only on the stator teeth formed by stacking the wide extending sections .

According to the above technical features, at least two extended section phases can be arranged in the same length interval of the strip during the stamping forming process of the strip Corresponding to the staggered configuration of the steel strip, thereby reducing the proportion of scrap of the strip; and, after the predetermined number of strands of steel strip are stacked in the form of strip-shaped semi-finished products, the coil can be wound directly by using the open space provided on one side of the extended section On the predetermined stator teeth, after all the predetermined stator teeth are wound, the strip-shaped semi-finished products are surrounded by an annular shape, and the end portions of the extended sections of the respective steel strips are extended toward the center of the ring, and each The curved section at the end of the extension section surrounds the shaft hole for receiving the rotor, which not only greatly reduces the processing difficulty, but also shortens the winding man-hour and reduces the cost of the winding equipment.俾 can achieve the purpose of effectively reducing production costs and increasing production capacity; in particular, it can be used to design narrow stator teeth between wide stator teeth, and only for the design of wide stator tooth winding coils (cross-tooth winding), Improve the slot full rate of the stator coil.

According to the above technical feature, the connecting sections formed by the ends of the wide strips of the wide strips are wider than the connecting sections formed by the trailing ends of the narrower extending sections.

The inner-rotating stator is coated with a predetermined thickness of the insulating layer on at least the stator teeth formed by stacking the wide-width extending sections.

Each of the steel strips is provided with at least one engaging portion for corresponding engagement at a side edge of the connecting portion at both ends of the head and the tail.

After the predetermined number of the steel strips are stacked in the form of a strip-shaped semi-finished product, they are fixed by riveting.

After the predetermined number of the steel strips are stacked in the form of a strip-shaped semi-finished product, they are fixed by welding.

The predetermined number of the steel strips are glued into a strip-shaped semi-finished product by using an adhesive material.

Specifically, the inner-rotating stator disclosed in the present invention can be used to configure narrow stator teeth between wide stator teeth in addition to effectively increasing the productivity, and only the wide stator teeth are wound (cross The design of the tooth winding) improves the slot fill rate of the coil; Moreover, by increasing the design of the width of the shoe portion to which the stator teeth of the coil are wound, a large amount of magnetic flux is collected (improving the utilization rate of the magnet), thereby increasing the power density.

[Prior technology]

10‧‧‧ Ontology

11‧‧‧ yoke

12‧‧‧ Stator teeth

13‧‧‧ Boots

14‧‧‧ gap

15‧‧‧ coil group

[This creation]

20‧‧‧block semi-finished products

21‧‧‧ steel bars

211‧‧‧Connected section

212‧‧‧Extended section

213‧‧‧Curved arc section

214‧‧‧Withholding department

30‧‧‧ coil

The first figure is a schematic diagram of a winding processing method of a conventional internal rotation type stator.

The second picture is a plan view of the internal rotating stator structure of the creation.

The third picture is a plan view of the steel bar structure of the creation.

The fourth figure is a structural perspective view of a predetermined number of bismuth steel strips stacked in a block-shaped semi-finished product.

The fifth picture is a schematic diagram of the internal winding type winding processing method of the creation.

As shown in the second figure, the internal rotation type stator structure plan view, the third picture shows the plan view of the steel bar structure, and the fourth picture shows the predetermined number of steel bars stacked in a block-shaped semi-finished product. The inner rotary stator is composed of a plurality of strips of steel strips 21 which are unfolded in a plurality of strips and are combined into a strip-shaped semi-finished product 20, and after the predetermined stator teeth are wound around the coil 30, the strip-shaped semi-finished products 20 are each rolled. The strip 21 is annularly formed in a manner of being connected at both ends; wherein: each of the steel strips 21 has a plurality of integrally connected connecting sections 211 for being stacked in a yoke portion opposite to the outer periphery of the inner rotating stator, in each connecting section An extending portion 212 extending a predetermined length is disposed at a center of the 211 for stacking the stator teeth as a core, and a predetermined wide curved portion 213 is provided at the end of each extending portion 212 for being relatively located The shoe portion of the inner ring of the rotary stator, and the curved portion 213 of the end portion of each extending portion 212 is widened when the strip-shaped semi-finished product 20 is wound into an annular shape, and is maintained with the adjacent curved portion 213 Predetermined spacing.

With the above structural design, the steel strip 21 can be integrally formed by stamping, and in the molding process, in the same length interval of the strip, At least two steel strips which are alternately arranged by the extending sections, thereby reducing the proportion of scrap of the strip; and, after the predetermined number of strips of steel strips are stacked in the form of strip-shaped semi-finished products, can be directly used as shown in FIG. There is an open space on one side of the extending section 212, and the coil 30 is wound on a predetermined stator tooth. After all the predetermined stator teeth are wound, the strip-shaped semi-finished product 20 is surrounded by an annular shape, and The end portion of the extending portion 212 of each of the steel strips 21 is extended toward the center of the ring, and the curved portion of the end portion of each extending portion surrounds the shaft hole for receiving the rotor, which not only greatly reduces the processing difficulty, but also greatly reduces the processing difficulty. This can shorten the winding man-hours and reduce the cost of the winding equipment.俾 can achieve the purpose of effectively reducing production costs and increasing production capacity.

In the implementation, the inner stator of the present invention, when the predetermined number of the steel strips 21 are stacked in the form of a strip-shaped semi-finished product 20, can be fixedly combined by riveting the steel strips 21 or by welding each of the steel strips 21 The predetermined combination or the adhesive material is used to stack and bond a predetermined number of the steel strips 21 into a strip-shaped semi-finished product 20.

Furthermore, each of the steel strips 21 can be provided with at least one corresponding engaging portion 214 at the side of the connecting section 211 at both ends of the head and the tail, as shown in FIG. When the respective steel strips 21 are wound in an annular shape so as to be in contact with each other at both ends, the engaging portions 214 to which the connecting portions 211 at both ends of the head and the tail belong can be fixed to the annular shape in accordance with the joint.

Since the integral inner-rotating stator can directly utilize the open space provided with one side of the extended section 212, the coil 30 is wound on the predetermined stator teeth, and after all the predetermined stator teeth are wound, the strip is shaped. The semi-finished product 20 is surrounded by an annular shape, so that the gap between the boots of the integral inner-rotating stator can be reduced, thereby reducing the rate of change of the magnetoresistance and reducing the torque and reducing the noise.

It is worth mentioning that each of the steel strips 21 can be disposed with a relatively narrow width extending section 212 between the two relatively wide extending sections 212. The overall inner rotating stator system is only wider than the width. The stator of the extended section 212 is stacked The coil 30 is wound on the tooth, that is, the narrow stator teeth are arranged between the wide stator teeth, and only the design of the wide stator tooth wound coil is used to improve the slot fullness of the coil; further, in this embodiment, The integral inner-rotating stator system may be coated with a predetermined thickness of insulating layer (not shown) on at least the stator teeth formed by stacking the wide-width extending sections.

And arranging a relatively narrow width extending section between the two wide-width extension sections, and winding only on the stator teeth formed by stacking the wide-width extension sections In the embodiment of the coil, the connecting section formed by each of the steel strips at the end of the wide extending section is wider, and the width of the connecting section formed by the end of the extending section which is larger than the narrower width is better. By increasing the design of the width of the shoe to which the stator teeth of the coil are wound, more magnetic flux is collected to increase the power density.

Compared with the conventional technology, the inner-rotating stator disclosed in the present invention can be used to configure narrow stator teeth between wide stator teeth, in addition to effectively reducing the related production cost and increasing the productivity. The design of the wide stator-coil wound coil (cross-tooth winding) improves the slot fullness of the coil; and the external magnetic collector can be collected by increasing the width of the shoe to which the stator teeth of the coil are wound. Pass (improve magnet utilization) to increase power density.

In summary, this creation provides a better and feasible internal conversion stator, and the application for a new patent is submitted according to law; the technical content and technical features of the creation are disclosed above, but those familiar with the technology may still be based on this The creation of the creation and the various changes and modifications that do not depart from the creative spirit of the case. Therefore, the scope of the present invention is not limited to the embodiments disclosed, but includes various alternatives and modifications that do not depart from the present invention and are covered by the following claims.

20‧‧‧block semi-finished products

21‧‧‧ steel bars

211‧‧‧Connected section

212‧‧‧Extended section

213‧‧‧Curved arc section

214‧‧‧Withholding department

30‧‧‧ coil

Claims (7)

An inner-rotating stator is a semi-finished product in which a plurality of unfolded steel strips are stacked and joined into a strip-shaped semi-finished product, and after the predetermined stator teeth are wound into a coil, the steel strips of the strip-shaped semi-finished products are The connecting manner is surrounded by an annular shape; wherein: each of the steel strips has a plurality of integrally connected connecting sections for stacking the yokes opposite to the outer periphery of the inner rotating stator, and extending a predetermined length along the center of each connecting section The extending section is configured to be stacked as a stator tooth of the iron core, and a predetermined wide curved arc section is provided at the end of each extending section to be a boot portion opposite to the inner rotating stator inner ring, and each extending The curved section of the end of the section is widened when the strip-shaped semi-finished product is wound into a circular shape, and is kept at a predetermined interval from the adjacent curved section; and each of the steel strips is relatively wide at two widths A relatively narrow width extending section is disposed between the extended sections, the inner rotating stator winding the coil only on the stator teeth formed by stacking the wide extending sections. The inner-rotating stator according to claim 1, wherein the connecting portion formed by each of the steel strips at the end of the wide-width extending portion is wider than the end portion of the extending portion having a narrow width. The connection section is wide. The inner-rotating stator according to claim 2, wherein the inner-rotating stator is coated with a predetermined thickness of the insulating layer on at least the stator teeth formed by stacking the wide-width extending sections. The inner-rotating stator according to claim 1 or 2, wherein each of the steel strips is provided with at least one engaging portion for corresponding engagement at a side edge of the connecting portion at both ends of the head and the tail. The inner-rotating stator according to claim 1 or 2, wherein the predetermined number of the steel strips are stacked in a strip-shaped semi-finished product and fixed by riveting. The internal rotation type stator according to claim 1 or 2, wherein the predetermined number of After the steel bars are stacked in a strip-shaped semi-finished product, they are fixed by welding. The inner-rotating stator according to claim 1 or 2, wherein the predetermined number of the steel strips are glued into a strip-shaped semi-finished product by using an adhesive material stack.