CN213521425U

CN213521425U - Stator for hybrid stepping motor

Info

Publication number: CN213521425U
Application number: CN202022752376.1U
Authority: CN
Inventors: 董效男
Original assignee: Changzhou Yidong Electric Co ltd
Current assignee: Changzhou Yidong Electric Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-22
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a stator for hybrid step motor, a serial communication port, include: an inner stator assembly, the inner stator assembly comprising: the stator teeth are hollow, each stator tooth comprises a plurality of convex teeth, the plurality of convex teeth are arranged on the periphery of each stator tooth along the circumferential direction, a groove is formed between every two adjacent convex teeth, a through hole which is communicated along the axial direction of the insulator is formed in the insulator, the windings are wound on the periphery of the insulator, the convex teeth are inserted into the through holes, and the insulator is arranged on the stator teeth and is locally positioned in the grooves; the magnet yoke is hollow, an installation groove with the same shape as the inner stator assembly is formed in the magnet yoke, and the inner stator assembly is installed in the installation groove. This stator adopts split type design, guarantees under the prerequisite of machining precision, uses on step motor, and the installation winding of not only being convenient for can also make full use of the space in the recess, has improved the full rate of groove, has bigger output torque than step motor under same volume.

Description

Stator for hybrid stepping motor

Technical Field

The utility model belongs to the technical field of motor stator, concretely relates to a stator for hybrid step motor.

Background

As shown in fig. 1 and 2, all stator cores of stepping motors are integrated by a yoke and a magnetic pole, and the stator teeth and the yoke are integrally formed. At present, the mixed stepping motor winding also adopts concentrated winding, and the original manual coil inserting process is abandoned, and the machine winding with higher production efficiency is changed.

However, the insulator is an integral structure and is inserted into the stator slot, the machine winding is that the enameled wire is guided into the insulator by a wire nozzle which is arranged on a machine spindle and used for guiding the enameled wire, and then the enameled wire is wound on the stator tooth, so that the motion space of the wire nozzle is required to be reserved in the insulator, the slot fullness rate of the motor cannot be improved, the space in the insulator cannot be fully utilized, the output torque cannot be improved when the volume is not changed, and the larger the volume of the motor needs to be, so that the larger output torque can be obtained.

Furthermore, although there is a split-type motor stator structure, the processing precision required by the stepping motor is high, and the existing split-type motor stator structure cannot be applied to the stepping motor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least.

Therefore, the utility model provides a stator for hybrid step motor, this a stator for hybrid step motor not only be convenient for install the winding, can also fully utilize the space in the recess, improved the groove fullness rate for the output torque of motor under same volume is bigger.

According to the utility model discloses a stator for hybrid step motor, include: an inner stator assembly, the inner stator assembly comprising: the stator teeth are hollow, each stator tooth comprises a plurality of convex teeth, the plurality of convex teeth are arranged on the periphery of the corresponding stator tooth along the circumferential direction, a groove is formed between every two adjacent convex teeth, a through hole which penetrates through the insulator along the axial direction is formed in the insulator, the winding is wound on the periphery of the insulator, the convex teeth are inserted into the through holes, and the insulator is installed on the corresponding stator tooth and is partially located in the groove; a yoke having a hollow inside, the yoke being formed therein with a mounting groove having the same shape as the inner stator assembly, the inner stator assembly being mounted in the mounting groove.

According to the utility model discloses a stator for hybrid step motor, through adopting the split type structure of stator tooth and yoke, the installation winding of not only being convenient for, can also make full use of the space in the recess, improved the groove fullness rate, have bigger output torque than step motor under same volume, perhaps, step motor's volume can be done littleer under the condition of same output torque, not only can practice thrift the cost, step motor that the volume is littleer moreover can also be applicable to multiple scene. The stator for the hybrid stepping motor has the advantages of simple design, high slot filling rate, high applicability, convenience in installation and the like.

According to the utility model discloses an embodiment, the quantity of insulator is the same with the quantity of dogtooth, and a plurality of insulators set up alone.

According to an embodiment of the present invention, the inner stator assembly is a circular or regular polygon.

According to the utility model discloses an embodiment, the inner stator subassembly forms to regular polygon structure, form the mounting groove that is regular polygon in the yoke, just the mounting groove includes a plurality of interior angles.

According to an embodiment of the invention, the shape of the winding is symmetrical.

According to the utility model discloses an embodiment, winding one end forms the closed angle, and inlays the interior angle department at the mounting groove.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

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

FIG. 2 is a schematic cross-sectional view of a prior art stator;

fig. 3 is a schematic cross-sectional view of a stator tooth for a stator of a hybrid stepper motor according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a cross-sectional inner stator assembly for a stator of a hybrid stepper motor according to an embodiment of the present invention;

fig. 5 is a schematic view of a yoke structure for a stator of a hybrid stepper motor according to an embodiment of the present invention;

fig. 6 is a schematic cross-sectional structural view of a stator for a hybrid stepper motor according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of an insulator for a hybrid stepper motor according to an embodiment of the present invention.

Reference numerals:

a stator 100 for a hybrid stepping motor;

an inner stator assembly 10;

stator teeth 11; the convex teeth 111; a recess 112;

a winding 12;

a yoke 20; a mounting groove 21;

an insulator 30; a through hole 301; the nozzle movement space 31.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The stator 100 for the hybrid stepping motor according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.

As shown in fig. 3 to 7, a stator 100 for a hybrid stepping motor according to an embodiment of the present invention includes: an inner stator assembly 10 and a yoke 20.

Specifically, according to the stator 100 for the hybrid stepping motor of the embodiment of the present invention, the inner stator assembly 10 includes: stator tooth 11, winding 12 and insulator 30, stator tooth 11 is hollow inside, stator tooth 11 includes a plurality of convex teeth 111, a plurality of convex teeth 111 are arranged on the periphery of stator tooth 11 along the circumferential direction, and a groove 112 is formed between adjacent convex teeth 111; the insulator 30 is provided with a through hole 301 which penetrates along the axial direction, the winding 12 is wound on the periphery of the insulator 30, the convex tooth 111 is inserted into the through hole 301, and the insulator 30 is installed on the stator tooth 11 and is partially positioned in the groove 112. The yoke 20 is hollow inside, a mounting groove 21 having the same shape as the inner stator assembly 10 is formed in the yoke 20, and the inner stator assembly 10 is mounted in the mounting groove 21.

In other words, the stator 100 for the hybrid stepping motor according to the embodiment of the present invention is mainly composed of the inner stator assembly 10 and the yoke 20. The inner stator assembly 10 comprises stator teeth 11 and windings 12, the stator teeth 11 and the magnetic yoke 20 are not in an integrated structure, the stator teeth 11 and the magnetic yoke 20 adopt a split design, the windings 12 are convenient to install, the windings 12 are wound on the periphery of the insulator 30, the insulator 30 wound with the windings 12 can be directly inserted on the convex teeth 111, the windings 12 are arranged in two adjacent grooves 112, then the magnetic yoke 20 is sleeved on the periphery of the stator teeth 11 and the winding 12, and the wire mouth movement space 31 does not need to be reserved in the insulator 30, so that the volume of the winding 12 is increased, the space in the groove 112 is fully utilized, the groove filling rate is improved, the output torque of the motor under the same volume is larger, or, the motor can be made smaller under the condition of the same output torque, so that the cost can be saved, and the motor with the smaller volume can be suitable for various scenes.

It should be noted that the shape of the inner stator assembly 10 is formed after the stator teeth 11 are installed with the insulator 30 wound with the winding 12, and the shape may be various shapes, for example: a circular shape, a polygonal shape, a regular shape or an irregular shape, and the specific shape is designed according to specific requirements as long as the shape of the inner stator assembly 10 is matched with the shape of the mounting groove 21 formed by the yoke 20. The shape of the insulator 30 may be various and is located between the stator teeth 11 and the yoke 20, and the shape of the corresponding winding 12 may be various.

Therefore, according to the utility model discloses a stator 100 for hybrid step motor, guarantee under the prerequisite of machining precision, use on step motor, through adopting stator tooth 11 and the split type structure of yoke 20, not only be convenient for install winding 12, can also fully utilize the space in recess 112, the groove fullness rate has been improved, make step motor's under same volume output torque bigger, or, step motor's volume can be done littleer under the condition of same output torque, not only can practice thrift the cost, step motor that the volume is littleer can also be applicable to multiple scene. The stator 100 for the hybrid stepping motor has advantages of simple design, high slot fullness rate, high applicability, and convenience in installation.

According to an embodiment of the present invention, the insulator 30 is connected to the stator teeth 11 in a snap fit. Is convenient to be disassembled and assembled.

Further, as shown in fig. 7, the number of insulators 30 is the same as the number of teeth, and a plurality of insulators 30 are provided separately. The insulators 30 in the prior art are integrally formed, are sleeved on the stator slots, are wound, and need to reserve a wire nozzle movement space 31 in the insulator 30, so that the operation is complex and the slot fullness rate is low. The insulator 30 of this practicality type is a plurality of, and a plurality of split type designs, and a dogtooth 111 cooperatees with an insulator 30, not only sets up simply, is convenient for change moreover, can also promote the full rate of groove.

Alternatively, the inner stator assembly is formed in any one of a circular shape, a regular polygonal shape, or an irregular shape. Can be selected according to requirements.

According to an embodiment of the present invention, the inner stator assembly 10 is formed in a regular polygonal structure, the mounting groove 21 formed in the yoke 20 is formed in a regular polygon shape, and the mounting groove 21 includes a plurality of inner angles. That is, the shape of the inner stator assembly 10 is symmetrical, the number of the teeth 111 can be odd number or even number, and when the number of the teeth 111 is even number, the structural uniformity and the shape symmetry of the stator teeth 11 can be ensured, so that the stator teeth can be conveniently installed on the magnetic yoke 20, and the slot filling rate can be improved.

As shown in fig. 6, it is preferable that one ends of two adjacent insulators 30 wound with the windings 12 are formed to be sharp and are fitted at the inner corners of the mounting grooves 21. One end of two adjacent insulators 30 wound with windings 12 is formed to be sharp-angled to match the inner angle of the mounting groove 21, and two adjacent insulators 30 wound with windings 12 are mounted at the inner angle of the regular polygon mounting groove 21, so that the friction force is greater, and the mounting firmness can be improved.

It should be noted that, in the winding of the existing stator, each phase is wound from the beginning to the end, that is, the winding on the teeth corresponding to the same phase is the same line, and finally the motor lead is connected. The utility model discloses a pass through PCB board recombination with the detached winding and be in the same place, then connect the motor lead wire again.

In summary, this a stator 100 for hybrid stepper motor is under the condition that satisfies the higher machining precision of stepper motor, has adopted new processing technology, make it overcome yielding problem, adopt split type design between stator tooth 11 and the yoke 20, and the split type design of a plurality of insulators 30, and adopt the polygonal design of inner stator subassembly 10, not only guarantee the homogeneity of stator tooth 11 structure and the symmetry of shape, promote the installation fastness, be convenient for install winding 12 moreover, promote the space utilization of recess 112, the volume of winding 12 has been increased, further promote stepper motor's output torque. Under the condition of the same output torque, the size of the stepping motor can be smaller, so that the applicability of the stepping motor is higher. The stator 100 of the hybrid stepping motor can be applied to industries such as military industry or aerospace industry which have requirements on the volume and weight of the stepping motor.

It should be noted that the illustrated pattern is only an example, and the present invention is not limited to the size of the motor, the shape of the groove, the mounting groove, the number of the grooves, or the number of phases of the motor.

Other structures and operations of the stator for the hybrid stepping motor according to the embodiments of the present invention are understood and easily implemented by those skilled in the art, and thus will not be described in detail.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A stator for a hybrid stepper motor, comprising:

an inner stator assembly, the inner stator assembly comprising: the stator teeth are hollow, each stator tooth comprises a plurality of convex teeth, the plurality of convex teeth are arranged on the periphery of the corresponding stator tooth along the circumferential direction, a groove is formed between every two adjacent convex teeth, a through hole which penetrates through the insulator along the axial direction is formed in the insulator, the winding is wound on the periphery of the insulator, the convex teeth are inserted into the through holes, and the insulator is installed on the corresponding stator tooth and is partially located in the groove;

a yoke having a hollow inside, the yoke being formed therein with a mounting groove having the same shape as the inner stator assembly, the inner stator assembly being mounted in the mounting groove.

2. The stator for a hybrid stepping motor according to claim 1, wherein the number of the insulators is the same as the number of the teeth, and a plurality of the insulators are separately provided.

3. A stator for a hybrid stepping motor as recited in claim 2, wherein the inner stator assembly is circular or regular polygonal.

4. The stator for a hybrid stepping motor according to claim 3, wherein the inner stator assembly is formed in a regular polygonal structure, the yoke is formed with a mounting groove formed therein in a regular polygon shape, and the mounting groove includes a plurality of inner angles.