CN212343471U - Insulating skeleton, motor stator, motor and air conditioner - Google Patents
Insulating skeleton, motor stator, motor and air conditioner Download PDFInfo
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- CN212343471U CN212343471U CN202021863206.4U CN202021863206U CN212343471U CN 212343471 U CN212343471 U CN 212343471U CN 202021863206 U CN202021863206 U CN 202021863206U CN 212343471 U CN212343471 U CN 212343471U
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Abstract
The utility model relates to the technical field of electric machine, especially, relate to insulating skeleton, have insulating skeleton's motor stator, have motor stator's motor and have the air conditioner of motor. This insulating skeleton includes: the symmetry sets up in two annular skeletons at stator both ends, annular skeleton includes: the stator core comprises a supporting frame and a plurality of groove insulating parts, wherein the groove insulating parts are arranged on one side of the supporting frame in a protruding mode along the circumferential direction, two groups of the groove insulating parts are mutually inserted into corresponding stator core grooves, and the cross section outline projection of an opening of each groove insulating part is larger than that of a root part; the design of the utility model ensures stable assembly between the stator core and the slot insulation part, and is not easy to loose; and simultaneously, the utility model discloses a design can also avoid two grafting complex groove insulating parts to form the arch in grafting position, effectively avoids protruding fish tail enameled wire, finally improves the stator reliability.
Description
Technical Field
The utility model relates to the technical field of electric machine, especially, relate to insulating skeleton, have insulating skeleton's motor stator, have motor stator's motor and have the air conditioner of motor.
Background
The insulated motor mainly comprises two main parts, namely a stator and a rotor, and the stator of the motor is insulated by an insulation framework. The insulation framework is an injection molding piece which is arranged at the end part of the motor stator and has a wire passing structural design; the projection of the cross section outline of the opening of the slot insulating part in the prior art is smaller than the projection of the cross section outline of the root, the distance between the two adjacent pairs of inserted slot insulating parts and the stator core is as shown in fig. 6 and 7, namely, the distance between the opening of the two adjacent pairs of inserted slot insulating parts and the stator core is larger than the distance between the root of the two adjacent pairs of inserted slot insulating parts and the stator core, so that the assembly of the insulating framework and the stator core is unstable, and the loosening condition is easy to occur.
SUMMERY OF THE UTILITY MODEL
An object of this application is to provide an insulating skeleton, motor stator, motor and air conditioner to insulating skeleton and stator core assemble unstability among the solution prior art, the problem that takes off appears easily.
Technical scheme (I)
In order to achieve the above object, the present invention provides in a first aspect an insulating framework, including: the symmetry sets up in two annular skeletons at stator both ends, annular skeleton includes: the stator core comprises a supporting frame and a plurality of groove insulating parts, wherein the groove insulating parts are arranged on one side of the supporting frame in a protruding mode along the circumferential direction, the groove insulating parts are arranged in two groups of a plurality of groove insulating parts and are mutually inserted into corresponding stator core grooves, and the projection of the cross section outline of an opening of each groove insulating part is larger than that of the cross section outline of a root part.
Optionally, the wall thickness of the slot insulating portion gradually increases along the direction from the root to the opening.
Optionally, the support frame is provided with an avoidance groove at a position contacting with the root of the groove insulating part, and the avoidance groove is circumferentially arranged along the groove insulating part.
Optionally, the avoiding groove is continuously arranged along the circumferential direction of the groove insulating part.
Optionally, the avoiding groove is discontinuously arranged along the circumferential direction of the groove insulating part, and the avoiding groove is arranged at a position where stress is concentrated.
Optionally, the depths of the avoidance grooves are equally arranged along the circumferential direction of the groove insulation part.
Optionally, the depth of the avoidance groove is unequal along the circumferential direction of the groove insulation part.
Optionally, the end of the groove insulating portion is provided with a plurality of male grooves for insertion, and the end of the groove insulating portion is provided with a plurality of female grooves for insertion.
In order to achieve the above object, a second aspect of the present invention provides a motor stator, including: an insulating skeleton as claimed in any preceding claim.
In order to achieve the above object, a third aspect of the present invention provides an electric machine, comprising: a motor stator as hereinbefore described.
In order to achieve the above object, the present invention provides, in a fourth aspect, an air conditioner, comprising: a motor as hereinbefore described.
(II) advantageous effects
Compared with the prior art, the utility model, following beneficial effect has:
the utility model provides an insulating skeleton, include: the symmetry sets up in two annular skeletons at stator both ends, annular skeleton includes: the stator core comprises a supporting frame and a plurality of groove insulating parts, wherein the groove insulating parts are arranged on one side of the supporting frame in a protruding mode along the circumferential direction, two groups of the groove insulating parts are mutually inserted into corresponding stator core grooves, and the cross section outline projection of an opening of each groove insulating part is larger than that of a root part;
adopt the utility model discloses a design adjacent two pairs of groove insulation portions of pegging graft and stator core's interval is as shown in fig. 3 and fig. 4, the opening part of the groove insulation portion of two pairs of adjacent pegging graft promptly and stator core's interval, be less than the root of the groove insulation portion of two pairs of adjacent pegging graft and stator core's interval, but stator core can produce the expansion force to the root of groove insulation portion when assembling, under the effect of above-mentioned expansion force, the root of the groove insulation portion of two pairs of adjacent pegging graft also can increase to a certain extent, make opening part and the root of the groove insulation portion of two pairs of adjacent pegging graft respectively with stator core's interval basically equal, thereby guarantee stable assembly between stator core and the groove insulation portion, difficult pine takes off; and simultaneously, the utility model discloses a design can also avoid two grafting complex groove insulating parts to form the arch in grafting position, effectively avoids protruding fish tail enameled wire, finally improves the stator reliability.
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 illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained without inventive exercise, wherein:
FIG. 1 is a cross-sectional profile projection of a slot insulator of the present invention;
fig. 2 is a top view of the insulating framework and the stator core of the present invention;
fig. 3 is a cross-sectional view taken at a position a-a in fig. 2 according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at position A;
FIG. 5 is an enlarged view of a portion of FIG. 3 at position B;
FIG. 6 is a cross-sectional view taken at location A-A of FIG. 2 of the prior art;
FIG. 7 is an enlarged view of a portion of FIG. 6 at position A;
FIG. 8 is a schematic view of the structure of the present invention in which the supporting frame is engaged with the slot insulating portion;
FIG. 9 is a partial enlarged view of the portion A in FIG. 5;
FIG. 10 is a schematic view of a prior art structure of a support frame engaged with a slot insulator;
FIG. 11 is an enlarged view of a portion of FIG. 7 at position A;
fig. 12 is a schematic structural diagram of a motor stator according to the present invention;
fig. 13 is an exploded view of the stator of the motor of the present invention.
In the figure: 1. an annular skeleton; 2. a support frame; 3. a slot insulating portion; 4. a stator core slot; 5. opening the opening; 6. a root portion; 7. an avoidance groove; 8. inserting a male slot; 9. inserting the female slot; 10. winding a wire; 11. an outlet assembly; 12. a stator core is provided.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The invention will be described in further detail with reference to the following drawings and embodiments:
as shown in fig. 1 to 13, a first aspect of the present application provides an insulating skeleton comprising: the symmetry sets up in two annular skeleton 1 at stator both ends, and annular skeleton 1 includes: the stator core comprises a supporting frame 2 and a plurality of groove insulating parts 3, wherein the groove insulating parts 3 are arranged on one side of the supporting frame 2 in a protruding mode along the circumferential direction, two groups of the groove insulating parts 3 are mutually inserted into corresponding stator core grooves 4, and the cross section outline projection of an opening 5 of each groove insulating part 3 is larger than that of a root 6; wherein the difference between the projection of the cross section outline at the opening 5 of the groove insulating part 3 and the projection of the cross section outline at the root part 6 is a,
a then needs to satisfy the relation
Wherein h is the length of the slot insulation part, σ is the bending strength of the slot insulation part material, E is the material elastic modulus, and μ is the material Poisson ratio;
specifically, the length of the slot insulating part may be set as: 10-40mm, the material of the slot insulating part can be polyvinyl chloride resin generally, and the material of the specific slot insulating part can be selected according to the specific use environment, for example, when the use environment is a high temperature resistant environment, the material of the corresponding slot insulating part is preferably a high temperature resistant material.
Preferably, the end portions of one group of the plurality of slot insulating portions 3 are provided with male plugging slots 8, the end portions of the other group of the plurality of slot insulating portions 3 are provided with female plugging slots 9, the slot insulating portions 3 of one group are in plugging fit with the female plugging slots of the other group of the slot insulating portions 3 through the male plugging slots, of course, the male plugging slots and the female plugging slots may be arranged at intervals in the plurality of slot insulating portions 3 of one group, or one part of the slot insulating portions is provided with the male plugging slots, and the other part is provided with the female plugging slots, as long as the arrangement mode of the two groups of the slot insulating portions in plugging fit belongs to the protection range of the scheme;
in the prior art, the projection of the cross section profile of the opening of the slot insulating part is smaller than that of the cross section profile of the root part, and the distance between two adjacent pairs of inserted slot insulating parts and the stator core is as shown in fig. 6 and 7, that is, the distance between the opening of the two adjacent pairs of inserted slot insulating parts and the stator core is larger than that between the root of the two adjacent pairs of inserted slot insulating parts and the stator core, that is, the opening of the stator core and the slot insulating part are assembled more loosely, and the root of the stator core and the slot insulating part are assembled more tightly, so that the assembly of the insulating framework and the stator core is unstable, and the loosening condition is easy to occur; and as can be seen from fig. 7, in the prior art, the matched position of the plugging male slot and the plugging female slot forms a protrusion, when the enameled wire is wound around the position, the protrusion will scratch the enameled wire, thereby reducing the reliability of the stator.
Adopt the utility model discloses a design adjacent two pairs of groove insulation portions of pegging graft and stator core's interval be as shown in fig. 3 and fig. 4, the opening part of the groove insulation portion of adjacent two pairs of pegging graft promptly and stator core's interval, be less than the root of the groove insulation portion of adjacent two pairs of pegging graft and stator core's interval, but stator core can produce the expansion force to the root of groove insulation portion when assembling, under the effect of above-mentioned expansion force, the root of the groove insulation portion of adjacent two pairs of pegging graft also can increase to a certain extent, make opening part and the root of the groove insulation portion of adjacent two pairs of pegging graft respectively with stator core's interval basically equal, that is to say that two groove insulation portions of pegging graft complex will stably assemble in corresponding stator core, thereby guarantee stable assembly between stator core and the groove insulation portion, difficult pine takes off; meanwhile, the design of the utility model can also avoid the two slot insulation parts which are matched with each other in a splicing way from forming a bulge at the splicing position, effectively avoid the bulge from scratching the enameled wire, and finally improve the reliability of the stator;
in order to ensure the stable assembly of the insulating framework and the electronic core, the influence of the form and position tolerance factors of the stator core and the insulating framework is also considered, an additional gap a1 is arranged between the side surfaces of the slot insulating part and the stator core, and the value of a1 is between the upper limit sum and the lower limit sum of the form and position tolerance of the two matching surfaces.
According to another embodiment of the present invention, the wall thickness of the slot insulating portion 3 is gradually increased along the root 6 to the opening 5, specifically, the wall thickness of the opening of the slot insulating portion 3 is greater than the wall thickness of the root of the slot insulating portion 3, the distance between the opening of the two pairs of adjacent inserted slot insulating portions and the stator core can be reduced by adopting the design of the present embodiment, that is, the distance between the opening of the two pairs of adjacent inserted slot insulating portions and the distance between the root of the two pairs of adjacent inserted slot insulating portions and the stator core are respectively adjusted to be substantially equal, that is, the two slot insulating portions in insertion fit are stably assembled in the corresponding stator core, thereby ensuring stable assembly between the stator core and the slot insulating portions, and preventing the stator core from loosening; and simultaneously, the utility model discloses a design can also avoid two grafting complex groove insulating parts to form the arch in grafting position, effectively avoids protruding fish tail enameled wire, finally improves the stator reliability.
According to an embodiment of the present invention, as shown in fig. 6, fig. 10 and fig. 11, in the prior art, an internal stress concentration may occur at a structural bending position (that is, a root portion of the groove insulating portion) of the insulating frame during the injection molding process, and during the assembling process of the groove insulating portion and the supporting frame 2, a position where the root portion of the groove insulating portion is connected to the supporting frame 2 will also be a stress concentration position, so that reliability risk problems such as cracking and excessive deformation may occur at the stress concentration position;
as can be seen from fig. 3, 5, 8 and 9, in order to solve the above problems, in the present embodiment, an avoiding groove 7 is provided at a position on the supporting frame 2 contacting the root portion 6 of the groove insulating portion 3, the avoiding groove 7 is disposed along the circumferential direction of the groove insulating portion 3, preferably, the avoiding groove 7 is continuously disposed along the circumferential direction of the groove insulating portion 3, and the depth of the avoiding groove 7 is smaller than the thickness of the groove insulating portion 3, so that the stress at the position where the root portion of the groove insulating portion is connected to the supporting frame 2 is effectively dispersed, the connection strength between the groove insulating portion and the supporting frame 2 is enhanced, and the problems such as cracking are avoided.
Of course, the avoiding groove 7 may also be discontinuously arranged along the circumferential direction of the groove insulating part 3, and the avoiding groove 7 is arranged at a position where stress is concentrated, for example, positions in contact with the enameled wire are both stress concentrated positions, so that the avoiding groove may be arranged at the stress concentrated position, and the avoiding groove does not need to be arranged at a position where stress is relatively dispersed, thereby reducing the processing cost;
according to the utility model discloses an embodiment, to the root of groove insulating part and the circumstances that the position all equals of the stress everywhere that braced frame 2 is connected, corresponding in order to guarantee the stress dispersion effect, the degree of depth of dodging groove 7 is for equal setting along the circumference of groove insulating part 3.
According to the utility model discloses a another embodiment, the root to groove insulating part is connected the position with carriage 2 and the unequal condition of stress everywhere, and corresponding for guaranteeing the stress dispersion effect, the degree of depth of dodging groove 7 is for not waiting to set up along groove insulating part 3's circumference, namely sets up the great position of intensity of stress and sets up the great groove of dodging of degree of depth, and sets up the shallow groove of dodging of degree of depth in the less position of intensity of stress.
The present application provides in a second aspect an electric machine stator comprising: an insulating skeleton as claimed in any preceding claim.
A third aspect of the present application provides an electric machine comprising: such as the motor stator described above.
The present application fourth aspect provides an air conditioner comprising: such as the aforementioned motor.
The embodiments in the present description are all described in a progressive manner, and some of the embodiments are mainly described as different from other embodiments, and the same and similar parts among the embodiments can be referred to each other.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying importance; the words "bottom" and "top", "inner" and "outer" refer to directions toward and away from, respectively, a particular component geometry.
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; the communication may be direct, indirect via an intermediate medium, or internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
The above description is only for the preferred embodiment of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (11)
1. An insulating skeleton, comprising: the symmetry sets up in two annular skeleton (1) at stator both ends, annular skeleton (1) includes: the stator core comprises a supporting frame (2) and a plurality of groove insulating parts (3), wherein the groove insulating parts (3) are arranged on one side of the supporting frame (2) in a protruding mode along the circumferential direction, the groove insulating parts (3) are arranged in two groups of stator core grooves (4) in an inserting mode, and the projection of the cross section outline of an opening (5) of each groove insulating part (3) is larger than that of the cross section outline of a root (6).
2. An insulating skeleton according to claim 1, characterized in that the wall thickness of the slot insulating part (3) is gradually increased along the root (6) towards the opening (5).
3. The insulation framework of claim 1, wherein an avoidance groove (7) is formed in a position, in contact with the root portion (6) of the groove insulation portion (3), of the support frame (2), and the avoidance groove (7) is circumferentially arranged along the groove insulation portion (3).
4. Insulation skeleton according to claim 3, characterized in that, the dodge groove (7) is continuous along the circumference of the groove insulation (3).
5. The insulating skeleton according to claim 3, characterized in that, the dodge groove (7) is discontinuously arranged along the circumference of the groove insulating part (3), and the dodge groove (7) is arranged at the position of stress concentration.
6. An insulating skeleton according to any one of claims 3-5, characterized in that the depth of the escape grooves (7) is equally arranged along the circumference of the groove insulation (3).
7. An insulating skeleton according to any one of claims 3-5, characterized in that the depth of the escape grooves (7) is arranged unequally along the circumference of the groove insulation (3).
8. An insulating skeleton according to claim 1, characterized in that, the end of one group of several slot insulating parts (3) is provided with a male slot (8) and the end of the other group of several slot insulating parts (3) is provided with a female slot (9).
9. An electric machine stator, comprising: an insulating skeleton as claimed in any one of claims 1 to 8.
10. An electric machine, comprising: the electric machine stator of claim 9.
11. An air conditioner, comprising: the electric machine of claim 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021863206.4U CN212343471U (en) | 2020-08-31 | 2020-08-31 | Insulating skeleton, motor stator, motor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021863206.4U CN212343471U (en) | 2020-08-31 | 2020-08-31 | Insulating skeleton, motor stator, motor and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212343471U true CN212343471U (en) | 2021-01-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021863206.4U Active CN212343471U (en) | 2020-08-31 | 2020-08-31 | Insulating skeleton, motor stator, motor and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212343471U (en) |
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- 2020-08-31 CN CN202021863206.4U patent/CN212343471U/en active Active
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