CN112510863B - Motor core, motor stator, motor and fan - Google Patents
Motor core, motor stator, motor and fan Download PDFInfo
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- CN112510863B CN112510863B CN202011320850.1A CN202011320850A CN112510863B CN 112510863 B CN112510863 B CN 112510863B CN 202011320850 A CN202011320850 A CN 202011320850A CN 112510863 B CN112510863 B CN 112510863B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
- H02K1/148—Sectional cores
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Abstract
The application discloses a motor iron core, a motor stator, a motor and a fan, wherein the motor iron core comprises an iron core body and a plurality of tooth parts, the iron core body is provided with a plurality of tooth roots at intervals along the circumferential outer side, and the radial outer end of each tooth root is provided with a first combining part; the radial inner end of each tooth part is provided with a second combining part, and the first combining part and the second combining part are spliced and involuted. According to the invention, the tooth root part and the tooth part are mutually nested and combined, and the butt joint surface of the first combining part and the second combining part is arranged at the radial extension position of the stator, so that the falling of an iron core is effectively avoided; and because the magnetic circuit is transmitted along the radial direction of the tooth root part in parallel, the conduction of the magnetic circuit is not influenced, and the occurrence of magnetic leakage can be effectively reduced.
Description
Technical Field
The present application relates generally to a rotor motor, and more particularly, to a motor core, a motor stator, a motor, and a fan.
Background
The traditional motor adopts a stator of a whole internally wound motor, the maximum winding speed of the stator of the structure is about 1000r/min, the winding speed of the stator externally wound can reach more than 4000r/min, and the winding efficiency of the whole internally wound stator structure is low, thus affecting the production efficiency.
Split type iron core has appeared in prior art, can realize that the stator is outer around wire winding structure, solves the problem of wire winding inefficiency. However, due to the self-combined structure of the split type iron core, the problems that the combination is not firm and the framework is easy to fall off exist in the combination process.
In view of this, it is desirable to improve the structure of the split core in the prior art to enhance the strength of the stator and prevent the core from falling off.
Disclosure of Invention
A main object of the present application is to overcome the above-mentioned defect that split type stator core drops easily among the prior art, and provide a motor core, including:
the iron core body is provided with a plurality of tooth roots at intervals along the circumferential outer side, and the radial outer ends of the tooth roots are provided with first combining parts; and
the radial inner end of each tooth part is provided with a second combining part, and the first combining parts and the second combining parts are spliced and matched.
According to an embodiment of the present invention, the first joining portion and the second joining portion have a concave-convex fitting shape in an axial cross section.
According to an embodiment of the present invention, a radially outer end of each of the tooth portions is provided with an end portion extending from the tooth portion to both sides in a circumferential direction.
According to an embodiment of the present invention, the tooth root portion and the tooth portion form a tooth body, and an abutting surface of the first joining portion and the second joining portion is disposed in a middle portion of the tooth body.
According to an embodiment of the invention, the tooth root and the tooth are clamped to each other, or connected by a connecting piece.
According to an embodiment of the present invention, the first combining portion is provided with a first engaging groove or a first engaging block along an axial direction of the motor stator, and the first engaging groove or the first engaging block abuts against the engaging member.
According to an embodiment of the present invention, the second engaging portion is provided with a second engaging groove or a second engaging block along an axial direction of the motor stator, and the second engaging groove or the second engaging block abuts against the engaging member.
The invention also discloses a motor stator which comprises the motor iron core and a plurality of frameworks, wherein the number of the frameworks is consistent with that of the tooth root parts and the tooth parts, the inside of each framework is provided with a connecting groove, and the tooth root parts and the tooth parts respectively enter from two ends of the connecting grooves and are respectively clamped with the connecting grooves.
According to an embodiment of the present invention, the tooth root portion is provided with a first body, the first combining portion is provided at an outer end of the first body, the tooth portion is provided with a second body, the second combining portion is provided at an inner end of the second body, and outer walls of the first body and the second body are attached to an inner wall of the connecting groove.
According to an embodiment of the present invention, a first clamping piece and a second clamping piece are disposed inside the connecting groove, the first clamping piece is clamped with the first combining portion, and the second clamping piece is clamped with the second combining portion.
Further, in the above embodiment, the first clamping piece and/or the second clamping piece are wedge-shaped structures, each wedge-shaped structure includes a lead-in surface and a thrust surface, the lead-in surface is an inclined surface and gradually increases in height to be connected with the thrust surface, and the thrust surface is a plane perpendicular to the side wall of the connecting groove.
According to an embodiment of the present invention, the frame is provided with a first baffle plate and a second baffle plate, and a winding slot is formed between the first baffle plate and the second baffle plate.
According to an embodiment of the invention, the framework is provided with a positioning boss for facilitating winding and crossing.
The invention also discloses a motor which comprises the motor stator with the structure.
The invention also discloses a fan which comprises the motor with the structure.
According to the technical scheme, the motor iron core and the motor stator have the advantages and positive effects that: the motor iron core is arranged in a split mode, the tooth root part and the tooth part are mutually nested and combined, the butt joint surface of the first combining part and the second combining part is not directly arranged at the root part of the periphery of the iron core body, but is arranged at the radial extending position of the iron core body, and the iron core is effectively prevented from falling off; and because the magnetic circuit is transmitted in parallel along the radial direction of the tooth root, the conduction of the magnetic circuit is not influenced, so that the magnetic leakage condition can be effectively reduced compared with the butt joint surfaces at other positions. With motor core and skeleton cooperation, root of tooth and tooth get into from the both ends of spread groove, realize the anti-joint location with the skeleton in the motor stator to make root of tooth, tooth and skeleton spacing each other and then maintain the stability of iron core, avoid the easy dropout problem of iron core, be convenient for consequently wind in the outside of skeleton, the outer peripheral face of skeleton is arranged in to the winding, guarantees the outer winding wire winding efficiency of iron core.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
Fig. 1 is a schematic view of a stator of an electric machine according to an exemplary embodiment.
Fig. 2 is a schematic diagram illustrating a stator of an electric machine after winding according to an exemplary embodiment.
Fig. 3 is a schematic diagram illustrating a structure of a core according to an exemplary embodiment.
Fig. 4 is a schematic structural view of a core body according to an exemplary embodiment.
Fig. 5 is a front view of a tooth shown in accordance with an exemplary embodiment.
Fig. 6 is a perspective view of a tooth shown in accordance with an exemplary embodiment.
FIG. 7 is a perspective view of a skeletal frame shown in accordance with an exemplary embodiment.
Fig. 8 is an assembly diagram illustrating a stator of an electric machine according to an exemplary embodiment.
Fig. 9 is an enlarged view of a portion a in fig. 8.
Wherein the reference numerals are as follows:
100. an iron core body; 110. a tooth root portion; 111. a first coupling portion; 112. a first card slot; 113. a first body; 120. a tooth portion; 121. a second joint part; 122. a second card slot; 123. a second body; 124. an end portion; 200. a framework; 210. connecting grooves; 211. a first clip member; 212. a second clip member; 220. a first baffle plate; 230. a second baffle; 240. positioning the boss; 251. a lead-in surface; 252. a thrust surface; 300. and (4) winding.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to overcome the technical problem that a split stator core in the prior art is easy to fall off, as shown in fig. 1 and 2, the invention discloses a motor core, which comprises a core body 100 and a plurality of tooth parts 120. The core body 100 is provided with a plurality of tooth roots 110 at intervals along the outer side in the circumferential direction, and the radially outer end of the tooth root 110 has a first coupling portion 111. The radially inner end of each tooth 120 has a second joint 121, and the first joint 111 and the second joint 121 are aligned in a splicing manner.
According to the technical scheme provided by the invention, the motor iron core is arranged in a split mode, the tooth root part 110 and the tooth part 120 are mutually nested and combined, and the butt joint surface of the first combining part 111 and the second combining part 121 is not directly arranged at the peripheral root part of the iron core body 100, but is arranged on the tooth root part 110 extending out of the iron core body 100 in the radial direction, so that the iron core is effectively prevented from falling off; furthermore, because the magnetic paths are transmitted in parallel along the radial direction of the tooth root 110, the first joint part 111 and the second joint part 121 form a butt joint surface, and the magnetic path conduction of the iron core is not affected, so that the magnetic flux leakage can be effectively reduced compared with the butt joint surfaces at other positions.
Specifically, as shown in fig. 3, P tooth roots 110 and tooth portions 120 may be provided, where P tooth roots 110 are distributed along the radial direction of the core body 100 at an included angle α, where α is 360 °/P, and P is the number of bobbins 200. In the present embodiment, P is preferably 4, and α is 90 °.
In a preferred embodiment, as shown in fig. 3, the first coupling portion 111 and the second coupling portion 121 have a concavo-convex fitting shape in an axial cross section. In this embodiment, the tooth root 110 and the tooth portion 120 are in contact with each other and are nested into each other to form a concave-convex shape, so that the stability of the engagement between the tooth root 110 and the tooth portion 120 can be effectively improved. Specifically, the shape of the butt joint surface can be set to be a plane or a simple shape according to the requirement, the processing cost is low, the requirement on the matching degree is relatively low, and the installation is convenient. If the butt joint surfaces are arranged as bending surfaces, the bending surfaces can be understood as a plurality of connected planes, so that the matching of the tooth root part 110 and the tooth part 120 is more accurate, the installation deviation is prevented, and the falling-off is less prone to occur after the installation; if the conical surface is provided, the conical surface also has a guiding function for installation, and the concave surface is preferred in the embodiment.
In a preferred embodiment, the radially outer end of each tooth 120 is provided with an end 124, and the ends 124 extend circumferentially from the tooth 120 to both sides. In this embodiment, since the external structure of the motor core needs to be adapted to other components of the motor, such as the stator frame, etc., the stator structure generally has a cylindrical shape according to the requirements of the winding and the magnetic field generation, and the structure of the end portion 124 is set to a structure extending along the circumferential direction, which is more matched with the motor structure.
In a preferred embodiment, the tooth root 110 and the tooth portion 120 form a tooth body, and the abutting surface of the first combining portion 111 and the second combining portion 121 is disposed in the middle of the tooth body. The butt joint surface is arranged in the middle of the tooth body, so that on one hand, the stress balance and stability of the framework 200 are kept; on the other hand, the tooth root 110 and the tooth 120 are generally made of silicon steel sheets through stamping, as long as each layer of silicon steel sheets can be tightly butted, the conduction of the magnetic circuit before each layer is not affected, and the scheme implements butt joint on the straight magnetic circuit in the middle of the tooth, so that the magnetic leakage condition is less occurred compared with the butt joint condition of other parts.
In a preferred embodiment, root portion 110 and tooth portion 120 snap into one another or are connected by a connector. In this embodiment, the tooth root 110 and the tooth portion 120 may further enhance the connection effect on the basis of mutual nesting of the structures, and specifically, the assembly between the two split structures, that is, the tooth root 110 and the tooth portion 120, may be implemented by clamping, screwing, riveting or hoop-type connection, so as to implement the assembly-type fixed butt joint.
In a preferred embodiment, the first combining portion 111 is provided with a first engaging groove 112 or a first engaging block along an axial direction of the motor stator, and the first engaging groove 112 or the first engaging block abuts against the engaging member. In this embodiment, the structures of the tooth root 110 and the tooth portion 120 are further improved to realize the snap-fit fixing by the snap-fit member. Specifically, this embodiment adopts the draw-in groove structure, and in order to improve the degree of cooperation of first joint portion 111 and joint spare, the degree of depth of first draw-in groove 112 should keep in suitable scope, and too big easily reduces the degree of depth of first joint portion 111, and the spacing effect of joint can't be guaranteed to the undersize. As shown in FIG. 4, the depth of the card slot is L1The tooth width is L, and the size meets the requirements: k is L1L, the proportionality coefficient k being defined as k ≦ 0.3 and L1≤0.8mm。
In a preferred embodiment, the second engaging portion 121 is provided with a second engaging groove 122 or a second engaging block along the axial direction of the motor stator, and the second engaging groove 122 or the second engaging block abuts against the engaging member. The structure of the present embodiment is similar to the structure of the first coupling portion 111, and aims to further strengthen the connection strength between the tooth root 110 and the tooth portion 120. Alternatively, the tooth root 110 and the tooth portion 120 may be engaged and fixed by a single engaging member. The depth scale of the second card slot 122 may be referenced to the setting of the first card slot 112.
The invention also discloses a motor stator, which comprises the motor iron core and a plurality of frameworks 200, the quantity of the frameworks 200 is consistent with that of the tooth root parts 110 and the tooth parts 120, the inside of each framework 200 is provided with a connecting groove 210, and the tooth root parts 110 and the tooth parts 120 respectively enter from two ends of the connecting grooves 210 and are respectively clamped with the connecting grooves 210.
With motor core and skeleton 200 cooperation among the motor stator, root of tooth 110 and tooth portion 120 get into from the both ends of spread groove 210, realize the anti-joint location with skeleton 200 to make root of tooth 110, tooth portion 120 and skeleton 200 spacing each other and then maintain the stability of iron core, avoid the easy problem that drops of iron core, consequently be convenient for wind in the outside of skeleton 200, the outer peripheral face of skeleton is arranged in to the winding, guarantees winding efficiency around the outer of iron core.
The invention can be used for various iron cores with teeth parts, such as an inner rotor type motor, the iron core with teeth parts applied to the inward direction of a stator, and other iron cores with different types of teeth parts with the same technical requirements. It can be understood that, by using the reverse clamping structure inside the framework 200, not only the butt stress of the two parts, i.e. the tooth root 110 and the tooth part 120, can be maintained, but also the shape on the iron core can be reduced, thereby reducing the difficulty of the iron core process and improving the yield. Further, the coupling groove 210 is engaged with the tooth root 110 and the tooth portion 120, thereby achieving the anti-drop effect.
In a preferred embodiment, the tooth root 110 is provided with a first body 113, the first combining part 111 is provided at the outer end of the first body 113, the tooth part 120 is provided with a second body 123, the second combining part 121 is disposed at the inner end of the second body 123, and the outer walls of the first body 113 and the second body 123 are attached to the inner wall of the connecting groove 210. In this embodiment, it can be understood that the contact areas between the tooth root 110 and the tooth portion 120 and the connecting groove 210 may be changed due to the different structures of the tooth root 110 and the tooth portion 120, and when the contact area is large, the contact area also has a certain guiding effect, so that the mounting and dismounting are facilitated, and meanwhile, the limiting effect can be enhanced. The first body 113 is configured to provide support for the first coupling portion 111, and the second body 123 provides support for the second coupling portion 121. One end of the frame 200 may abut against the core body 100, and the other end abuts against the outer end of the tooth portion 120. Since the bobbin 200 requires a winding wire on the outside thereof, the bobbin 200 is directly abutted against the core body 100 in order to enlarge a winding space. The inside of skeleton 200 is spacing each other with tooth root 110 and tooth portion 120, and outside both ends are spacing through iron core body 100 and tooth portion 120, have further improved the holistic stability of motor stator. Specifically, if the outer circumference of the tooth portion 120 is provided with the end portion 124 in the foregoing structure, the end portion 124 should be disposed at the radial outer end of the second body 120, or should be extended from the radial outer end of the second body 120 to the outer circumference direction.
In a preferred embodiment, as shown in fig. 8, a first latching piece 211 and a second latching piece 212 are arranged inside the connecting groove 210, the first latching piece 211 is latched with the first combining part 111, the second latching piece 212 is latched with the second combining part 121, and the thrust directions of the first latching piece 211 and the second latching piece 212 are opposite. In the present embodiment, the clamping structure of the tooth root 110 and the tooth part 120 with the connecting groove 210 is improved. The first latching piece 211 and the second latching piece 212 are respectively used for matching with the tooth root 110 and the tooth part 120, and the thrust directions are opposite, so as to prevent the tooth root 110 and the tooth part 120 from being pulled out to two ends of the connecting groove 210. Since the structures of the root portion 110 and the tooth portion 120 may be provided in various kinds, the first escapement 211 and the second escapement 212 may be changed in shape and position accordingly to match the root portion 110 and the tooth portion 120, respectively.
Specifically, the first and second escapements 211 and 212 are symmetrically distributed about a central cross section of the coupling groove 210. In this embodiment, the clamping positions of the connecting groove 210, the tooth root 110 and the tooth portion 120 are limited, and the tooth root 110 and the tooth portion 120 respectively exert opposite acting forces on the frame 200 inside the connecting groove 210, so that the first clamping piece 211 and the second clamping piece 212 are arranged in the middle of the connecting groove 210 and symmetrically distributed, which is beneficial to keeping the stress balance and stability of the frame 200.
Specifically, the number of the first escapement 211 and/or the second escapement 212 is one; or, the first clamping piece 211 and/or the second clamping piece 212 are arranged at intervals, and the number is at least two; alternatively, the first catch 211 and/or the second catch 212 are circumferential projections. In this embodiment, in order to adapt to different structures of the iron core, the structures and the arrangement manners of the first clamping piece 211 and the second clamping piece 212 are optimized, specifically, the connecting groove 210 may be set to be square, circular, oval or other shapes, so that according to actual needs and processing difficulty, the first clamping piece 211 and/or the second clamping piece 212 is set to be one, two arranged at intervals, or three evenly distributed, and the like, when a plurality of clamping pieces are set, the positions should be uniformly arranged as much as possible, and the stability and the effectiveness of clamping can be improved; when the circumferential bosses are provided, the tooth root 110 and the tooth portion 120 can be allowed to be easily installed when entering the connecting groove 210, and meanwhile, in order to ensure that the framework 200 and the tooth root 110 and the tooth portion 120 are relatively static, the first clamping piece 211, the second clamping piece 212 and the connecting groove 210 have a limiting effect, and the tooth root 110 or the tooth portion 120 is prevented from rotating relative to the connecting groove 210. As shown in fig. 8, in this embodiment, the connecting slot 210 is a rectangular slot, the first clamping piece 211 and the second clamping piece 212 are symmetrically disposed on two opposite sides of the connecting slot 210, the first clamping piece 211 is disposed as one, the second clamping piece 212 is disposed as two, and disposed on two sides of the first clamping piece 211, there is no space between the first clamping piece 211 and the second clamping piece 212, so as to effectively improve the structural strength of the framework 200.
Further, in the above embodiment, as shown in fig. 9, the first latching part 211 and/or the second latching part 212 have a wedge structure, the wedge structure includes a leading-in surface 251 and a thrust surface 252, the leading-in surface 251 has a slope and gradually increases in height to be connected with the thrust surface 252, and the thrust surface 252 has a plane perpendicular to the side wall of the connecting groove 210. In this embodiment, in order to improve the clamping effect, the structures of the first clamping piece 211 and the second clamping piece 212 are optimized. Specifically, the first latching part 211 and/or the second latching part 212 are provided with a wedge structure, the height of the leading-in surface 251 of the wedge structure gradually increases to reach the thrust surface 252, which can play a guiding role when the tooth root 110 or the tooth part 120 enters the connecting groove 210, the thrust surface 252 is used for the abutment of the tooth root 110 or the tooth part 120 when the clamping position is reached, and the thrust surface 252 applies a blocking force to the tooth root 110 and the tooth part 120. It will be appreciated that the thrust surfaces 252 of the first 211 and second 212 catches are oppositely oriented. The thrust surface 252 may also be an inclined surface, which forms an acute angle with the inner wall of the connecting groove 210, so as to further improve the anti-slip effect.
In a preferred embodiment, as shown in fig. 7, the bobbin 200 is provided with a first barrier 220 and a second barrier 230, and a winding slot is formed between the first barrier 220 and the second barrier 230. In this embodiment, in order to improve the compatibility of the skeleton 200, the structure of the skeleton 200 is optimized. Specifically, set up first baffle 220 and second baffle 230 at the both ends of skeleton 200, the winding wire groove that forms can be convenient spacing to the winding, moreover can with iron core body 100 with better conflict between tooth portion 120 and be connected, iron core body 100 and tooth portion 120 carry on the skeleton 200 spacing, hold down each other between the part and then remain stable. In this embodiment, first baffle 220 sets up to the cambered surface with the periphery radian adaptation of iron core body 100, and second baffle 230 sets up to the cambered surface, is favorable to realizing the cooperation with motor stator's whole, improves compact structure degree.
In a preferred embodiment, as shown in fig. 2, 7 and 8, the bobbin 200 is provided with a positioning boss 240 for facilitating winding and crossing. In this embodiment, the structure of the bobbin 200 is optimized, and since the winding 300 needs to be wound across the teeth during winding, the positioning boss 240 is provided to limit the winding, so that the winding is maintained at a proper position and a proper density is maintained. Specifically, location boss 240 is by the outside setting that extends of side of skeleton 200, and location boss 240 sets up to a plurality ofly, and the constant head tank between two location bosses 240 effectively realizes the location to the wire winding.
The processing and assembling method comprises the following steps:
the first step is as follows: laminating the punching sheets into the tooth root part 110 and the tooth part 120 through a stamping die, and injecting an insulating material into the framework 200 through an injection die;
the second step is that: winding the ring-shaped concentrated winding 300 by using winding equipment;
the third step: nesting the tooth part 120 and the framework 200 of the wound winding 300 in place according to corresponding positions;
the fourth step: and sequentially installing the framework 200 of each set of winding 300 into the corresponding tooth root part 110 to form the motor stator.
The invention also discloses a motor which comprises the motor stator with the structure. The motor provided by the technical scheme of the invention has all the technical effects of the motor stator, and the details are not repeated herein.
The invention also discloses a fan which comprises the motor with the structure. The fan provided by the technical scheme of the invention has all the technical effects of the motor stator, and the details are not repeated here.
According to the technical scheme, the motor iron core, the motor stator, the motor and the fan have the advantages and positive effects that: the motor iron core is arranged in a split mode, the tooth root part 110 and the tooth part 120 are mutually nested and combined, the butt joint surface of the first combining part 111 and the second combining part 121 is not directly arranged at the peripheral root part of the stator, but is arranged on the tooth root part extending out of the radial direction of the stator, and the iron core is effectively prevented from falling off; furthermore, because the magnetic paths are transmitted in parallel along the radial direction of the tooth root 110, the first joint part 111 and the second joint part 121 form a butt joint surface, and the magnetic path conduction of the iron core is not affected, so that the magnetic flux leakage can be effectively reduced compared with the butt joint surfaces at other positions. With motor core and skeleton 200 cooperation among the motor stator, root of tooth 110 and tooth portion 120 get into from the both ends of spread groove 210, realize the anti-joint location with skeleton 200 to make root of tooth 110, tooth portion 120 and skeleton 200 spacing each other and then maintain the stability of iron core, avoid the easy problem that drops of iron core, consequently be convenient for wind in the outside of skeleton 200, the outer peripheral face of skeleton is arranged in to the winding, guarantees winding efficiency around the outer of iron core.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention to enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (13)
1. A motor stator is characterized by comprising a motor iron core, a connecting groove (210) and a plurality of frameworks (200)
A motor core, comprising:
the iron core comprises an iron core body (100), a plurality of tooth root parts (110) are arranged at intervals along the circumferential outer side, and the radial outer ends of the tooth root parts (110) are provided with first connecting parts (111); and
a plurality of tooth parts (120), wherein a radial inner end of each tooth part (120) is provided with a second combining part (121), and the first combining part (111) and the second combining part (121) are spliced and matched;
the number of the frameworks (200) is the same as that of the tooth root parts (110) and the tooth parts (120), a connecting groove (210) is arranged inside each framework (200), and the tooth root parts (110) and the tooth parts (120) respectively enter from two ends of the connecting groove (210) and are respectively clamped with the connecting groove (210);
a first clamping piece (211) and a second clamping piece (212) are arranged inside the connecting groove (210), the first clamping piece (211) is clamped with the first combining part (111), and the second clamping piece (212) is clamped with the second combining part (121);
the first clamping piece (211) and the second clamping piece (212) are symmetrically arranged on two opposite side surfaces of the connecting groove (210), the number of the first clamping piece (211) is one, the number of the second clamping piece (212) is two, the two clamping pieces are arranged on two sides of the first clamping piece (211), and no space exists between the first clamping piece (211) and the second clamping piece (212).
2. The motor stator according to claim 1, wherein the first joining portion (111) and the second joining portion (121) have a concavo-convex fitting shape in an axial cross section.
3. The stator of an electric machine according to claim 1, wherein a radially outer end of each of the tooth portions (120) is provided with an end portion (124), and the end portions (124) are circumferentially extended from the tooth portion (120) to both sides.
4. The stator according to claim 1, wherein the tooth root portion (110) and the tooth portion (120) form a tooth body, and the abutting surface of the first joining portion (111) and the second joining portion (121) is disposed in the middle of the tooth body.
5. Stator according to claim 1, characterized in that the tooth root (110) and the tooth (120) are clamped to each other or connected by a connection.
6. The motor stator as claimed in claim 1, wherein the first coupling portion (111) is provided with a first engaging groove (112) or a first engaging block along an axial direction of the motor stator, and the first engaging groove (112) or the first engaging block abuts against the engaging member.
7. The motor stator as claimed in claim 1, wherein the second combining portion (121) is provided with a second engaging groove or a second engaging block (122) along an axial direction of the motor stator, and the second engaging groove or the second engaging block (122) abuts against the engaging member.
8. The motor stator as claimed in claim 1, wherein the tooth root (110) is provided with a first body (113), the first combining portion (111) is provided at an outer end of the first body (113), the tooth portion (120) is provided with a second body (123), the second combining portion (121) is disposed at an inner end of the second body (123), and outer walls of the first body (113) and the second body (123) are attached to an inner wall of the connecting slot (210).
9. The stator according to claim 1, wherein the first clamping piece (211) and/or the second clamping piece (212) is a wedge-shaped structure, the wedge-shaped structure comprises a lead-in surface (251) and a thrust surface (252), the lead-in surface (251) is a slope surface, the height of the lead-in surface gradually increases to be connected with the thrust surface (252), and the thrust surface (252) is a plane perpendicular to the side wall of the connecting groove (210).
10. The motor stator according to claim 1, wherein the bobbin (200) is provided with a first baffle (220) and a second baffle (230), and a winding slot is formed between the first baffle (220) and the second baffle (230).
11. The motor stator as claimed in claim 8, wherein the frame (200) is provided with a positioning boss (240) for facilitating winding and wire crossing.
12. An electrical machine comprising an electrical machine stator according to any of claims 1-11.
13. A fan comprising the motor of claim 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320850.1A CN112510863B (en) | 2020-11-23 | 2020-11-23 | Motor core, motor stator, motor and fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011320850.1A CN112510863B (en) | 2020-11-23 | 2020-11-23 | Motor core, motor stator, motor and fan |
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| Publication Number | Publication Date |
|---|---|
| CN112510863A CN112510863A (en) | 2021-03-16 |
| CN112510863B true CN112510863B (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011320850.1A Active CN112510863B (en) | 2020-11-23 | 2020-11-23 | Motor core, motor stator, motor and fan |
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