CN212660025U - Stator assembly, molded stator, motor and electric product - Google Patents
Stator assembly, molded stator, motor and electric product Download PDFInfo
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- CN212660025U CN212660025U CN202021402298.6U CN202021402298U CN212660025U CN 212660025 U CN212660025 U CN 212660025U CN 202021402298 U CN202021402298 U CN 202021402298U CN 212660025 U CN212660025 U CN 212660025U
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Abstract
The embodiment of the application provides a stator module, mould shaping stator, motor and electric product. In the molded stator structure, the coil lead wires are electrically connected to the power supply terminals by using a resin holder during molding. The coil lead wires are pulled from between the teeth to a position radially outside the resin holder, the coil lead wires are pulled against the notches of the edge of the resin holder to the claw portions of the electrical connection terminals for electrical connection, and then the whole is resin-cast. Since the coil lead wires are not connected to the claw portions of the electric connection terminals through the through holes extending through the resin holder in the axial direction between the teeth, interference with the flow of the resin is not generated at the time of molding, and workability is improved; further, the coil lead wire can be prevented from interfering with the claw portion of the electrical connection terminal, and the coil lead wire can be prevented from pulling the electrical connection terminal to one side in the circumferential direction and tilting the electrical connection terminal.
Description
Technical Field
The embodiment of the application relates to the electromechanical field, and especially relates to a stator module, moulded stator, motor and electric product.
Background
A stator portion of a brushless motor for an anti-lock brake system (ABS) is generally molded, and in order to electrically connect coil lead wires to claw portions of electrical connection terminals during molding, a coil is generally wound around an insulator covering a stator core, and the coil lead wires are led out from one axial side of the stator core. Then, a resin holder is disposed on one axial side of the stator core, the resin holder normally carrying an electric connection terminal for supplying power to the coil lead wire, the resin holder having a through hole penetrating in the axial direction, a claw portion of the electric connection terminal being located on one axial side of the through hole, the coil lead wire being led out toward one axial side from between two adjacent teeth of the stator core, and being pulled through the through hole to be electrically connected to the claw portion of the electric connection terminal. And then, resin is poured from the axial opposite side of the claw part of the stator core to the claw part side, thereby forming the molded stator.
However, in the case of adopting the above structure, when resin is poured between the teeth, since the coil lead-out wire is axially led out from between the teeth and connected with the claw portion of the electrical connection terminal axially positioned between the teeth, interference is caused to the flow of the resin, and the resin does not easily flow into between the teeth; further, since the coil lead wire needs to be pulled to the claw portion of the electric connection terminal through the through hole in the resin holder, the work is troublesome.
It should be noted that the above background description is only for the convenience of clear and complete description of the technical solutions of the present application and for the understanding of those skilled in the art. Such solutions are not considered to be known to the person skilled in the art merely because they have been set forth in the background section of the present application.
SUMMERY OF THE UTILITY MODEL
To address at least one of the above problems or other similar problems, embodiments of the present application provide a stator assembly, a molded stator, a motor, and an electric product.
According to an aspect of an embodiment of the present application, there is provided a stator assembly including:
a stator core that is arranged in a cylindrical shape around a central axis and has a plurality of teeth arranged in a circumferential direction;
an insulating member covering the tooth portion of the stator core;
a coil wound around the tooth portion of the stator core with the insulator interposed therebetween; and
a terminal block including a resin-made electric connection terminal holder mounted on the insulating member, and an electric connection terminal held by the electric connection terminal holder and connected to an external power supply and a coil lead wire;
wherein the content of the first and second substances,
the electric connection terminal retainer is provided with a through hole which penetrates along the axial direction and a plurality of grooves which are positioned on the edge of the radial outer side or the radial inner side of the electric connection terminal retainer;
the electric connection terminal has a claw portion, and is within a range of the electric connection terminal holder as viewed in an axial direction;
the coil lead-out wire is led out from a tooth groove between two adjacent tooth parts to one side close to the groove, is hung on the groove and led to the claw part of the electric connection terminal, and is electrically connected with the claw part, and the opening of the groove is positioned on the radial outer side or the radial inner side of the tooth groove.
In some embodiments, at least two of the slots each receive two of the coil lead-out wires.
In some embodiments, the electrical connection terminal further includes an electrical connection portion held to the electrical connection terminal holder, and the claw portion extends from a circumferential side of the electrical connection portion in a direction away from the electrical connection portion.
In some embodiments, the claw portion and the coil lead-out wire are located on the same side of the electrical connection portion in the circumferential direction, the claw portion is bent along a plane perpendicular to the axial direction, and the opening formed after bending is closer to the electrical connection portion with respect to the coil lead-out wire that is caught by the claw portion.
In some embodiments, the claw portion is bent in a direction away from the groove.
In some embodiments, the outer diameter of the stator core is 40mm or less.
According to another aspect of embodiments of the present application, there is provided a mold-formed stator including the stator assembly described above, in which a resin is injected into the slots between the teeth of the stator assembly.
In some embodiments, coil lead-out wires of the stator assembly are led to claw portions of the stator assembly along an electric connection terminal holder of the stator assembly from a radially outer side to a radially inner side, the coil lead-out wires are located radially inner than an outer circumferential surface of a stator core of the stator assembly, the coil lead-out wires and the claw portions are covered with resin to form resin walls, and the outer circumferential surface of the resin walls is located radially inner than the outer circumferential surface of the stator core in the same radial direction or located in the same radial dimension.
According to a further aspect of embodiments of the present application, there is provided a motor including the aforementioned molded stator.
According to a further aspect of embodiments of the present application, there is provided an electric product including the aforementioned motor.
One of the beneficial effects of the embodiment of the application lies in: according to the embodiment of the present application, in the stator structure that is molded (i.e., resin is poured between the teeth), the electrical connection of the coil lead wires and the power supply terminals is performed using the resin holder at the time of molding. The coil lead wires are pulled from between the teeth to a position radially outside the resin holder, the coil lead wires are pulled against the notches of the edge of the resin holder to the claw portions of the electrical connection terminals for electrical connection, and then the whole is resin-cast. Since the coil lead wires are not connected to the claw portions of the electric connection terminals through the through holes extending through the resin holder in the axial direction between the teeth, interference with the flow of the resin is not generated at the time of molding, and workability is improved; further, since the coil lead wire is pulled from the radially outer side of the claw portion of the electrical connection terminal to the claw portion, it is possible to prevent the coil lead wire from interfering with the claw portion of the electrical connection terminal and to prevent the coil lead wire from pulling the electrical connection terminal toward the one side in the circumferential direction and from falling, as compared with a structure in which the coil lead wire passes through the through hole and extends from the lower side in the axial direction of the claw portion of the electrical connection terminal to the claw portion of the electrical connection terminal.
Specific embodiments of the present application are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not so limited in scope. The embodiments of the application include many variations, modifications and equivalents within the spirit and scope of the appended claims.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application, are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic view of one example of a stator assembly of an embodiment of the present application;
FIG. 2 is a schematic view of one cross-section of the stator assembly shown in FIG. 1;
FIG. 3 is a top view of the stator assembly shown in FIG. 1;
fig. 4 is a schematic view of a molded stator of an embodiment of the present application.
Detailed Description
The foregoing and other features of the present application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the application are disclosed in detail as being indicative of some of the embodiments in which the principles of the application may be employed, it being understood that the application is not limited to the described embodiments, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.
In embodiments of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," and the like, refer to the presence of stated features, elements, components, and do not preclude the presence or addition of one or more other features, elements, components, and elements.
In the embodiments of the present application, the singular forms "a", "an", and the like may include the plural forms and should be interpreted broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "comprising" should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Further, the term "according to" should be understood as "at least partially according to … …," and the term "based on" should be understood as "based at least partially on … …," unless the context clearly dictates otherwise.
In the following description of the present application, for the sake of convenience of description, a direction extending along a central axis (e.g., central axis O) of the motor or a direction parallel thereto will be referred to as an "axial direction"; a radial direction centered on the central axis O is referred to as a "radial direction"; the direction close to the central axis O is referred to as "radially inward"; the direction away from the central axis O is referred to as "radially outward"; the direction around the center axis O is referred to as "circumferential direction". It should be noted that these are for convenience of illustration only and do not limit the orientation of the motor during use and manufacture.
Embodiments of the present application will be described below with reference to the drawings.
Embodiments of the first aspect
The embodiment of the application provides a stator assembly.
Fig. 1 is a schematic view of an example of a stator assembly of an embodiment of the present application, fig. 2 is a schematic view of a cross-section of the stator assembly shown in fig. 1, and fig. 3 is a top view of the stator assembly shown in fig. 1.
As shown in fig. 1 and 2, the stator assembly 100 includes: stator core 10, insulator 20, coil 30, and terminal block 40. The stator core 10 is arranged cylindrically around the center axis O, and has a plurality of teeth (not shown) arranged in the circumferential direction; the insulator 20 covers the tooth portion of the stator core 10; a coil 30 wound around a tooth portion of the stator core 10 via an insulator 20; the terminal block 40 includes an electrical connection terminal holder 41 made of resin mounted on the insulator 20, and an electrical connection terminal 42 held by the electrical connection terminal holder 41 and connected to an external power supply (not shown) and the coil lead wire 31.
In the present embodiment, as shown in fig. 3, the electrical connection terminal holder 41 has a through hole 411 that penetrates in the axial direction and a plurality of grooves 412 located at the edge of the electrical connection terminal holder 41 on the radially outer side or the radially inner side. The groove 412 is shown in fig. 3 as being located at the edge of the electrical connection terminal holder 41 on the radially outer side, but the present application is not limited thereto, and the groove 412 may be located on the radially inner side of the electrical connection terminal holder 41, or the groove 412 may be provided on both the radially inner side and the radially outer side of the electrical connection terminal holder 41.
In the present embodiment, as shown in fig. 3, the electric connection terminal 42 has the claw portion 421, and, as viewed in the axial direction, the electric connection terminal 42 is within the range of the electric connection terminal holder 41. That is, along the same radial direction (in the same radial direction), the radially outer side of the electrical connection terminal 42 is radially inward of the radially outer side of the electrical connection terminal holder 41, and the radially inner side of the electrical connection terminal 42 is radially outward of the radially inner side of the electrical connection terminal holder 41.
In the embodiment of the present application, as shown in fig. 3, the coil lead-out wire 31 is led out from the tooth groove between two adjacent tooth portions toward the side close to the groove 412, the claw portion 421 which is brought into contact with the groove 412 to the electric connection terminal 42 is electrically connected to the claw portion 421, and the opening of the groove 412 is located radially outside or radially inside the tooth groove. In fig. 3, the opening of the groove 412 is located radially outside the slot (between two teeth), but the present application is not limited thereto, and the opening of the groove 412 is located radially inside the slot (between two teeth).
According to the configuration of the stator assembly of the embodiment of the present application, the coil lead wires 31 are pulled from between the teeth to the position on the radially outer side (or radially inner side) of the resin holder, the coil lead wires are pulled against the notches (grooves) on the edge of the resin holder to the claw portions of the electrical connection terminals for electrical connection, and then the whole is resin-cast. The coil lead wire can be prevented from interfering with the fluidity at the time of resin injection, and the workability at the time of electrical connection can be improved.
In some embodiments, each groove 412 of the at least two grooves 412 houses two coil lead-out wires 31. For the triangular wiring, the structure can particularly prevent interference caused by resin flow, prevent the electric connection terminal from toppling, and improve the convenience of electric connection operation.
In some embodiments, as shown in fig. 3, the number of the grooves 412 may be four, wherein two grooves 412 accommodate two coil lead-out wires 31 respectively, and the other two grooves 412 accommodate one coil lead-out wire 31 respectively. Wherein the groove 412 accommodating one coil lead-out wire 31 can prevent interference between the coil lead-out wire 31 and the transition wire 32 (see fig. 1) wound in the circumferential direction.
In some embodiments, as shown in fig. 1 and 3, the electrical connection terminal 42 further includes an electrical connection portion 422, the electrical connection portion 422 is held to the electrical connection terminal holder 41, the claw portion 421 extends from a circumferential side of the electrical connection portion 422 in a direction away from the electrical connection portion 422, that is, the claw portion 421 is connected to the electrical connection portion 422 on a circumferential side of the electrical connection portion 422, and the electrical connection portion 422 and the claw portion 421 are located at different positions in the circumferential direction. In some embodiments, the claw portion 421 extends in a direction away from the electrical connection portion 422 in the circumferential direction on one side in the circumferential direction of the electrical connection portion 422.
With this structure, since the coil lead wires 31 and the claw portions 421 are not interfered by the electrical connection portions 422 when electrically connected, the electrical connection of the coil lead wires and the claw portions is facilitated.
In some embodiments, as shown in fig. 1 and 3, a clamping portion 413 extending in the axial direction is further provided on the electrical connection terminal holder 41, and the clamping portion 413 clamps the electrical connection portion 422 at both sides of the electrical connection portion 422 in the radial direction, so that the electrical connection portion 422 is held by the electrical connection terminal holder 41, and the structure of the clamping portion 413 is not limited in the present application.
In some embodiments, as shown in fig. 3, the claw portion 421 and the coil lead-out wire 31 are located on the same side of the electrical connection portion 422 in the circumferential direction, the claw portion 421 is bent along a plane perpendicular to the axial direction (i.e., a plane on which the electrical connection terminal holder 41 is located), and the opening formed after bending is closer to the electrical connection portion 422 with respect to the coil lead-out wire 31 that is caught by the claw portion 421.
With the structure, when the coil lead-out wire is connected with the claw part, the coil lead-out wire can be hung on the claw part for connection, the operation is more convenient, and the coil lead-out wire is not easy to fall off.
In some embodiments, as shown in FIG. 3, the pawl 421 is bent away from the groove 412. For example, if the groove 412 is located radially outward of the electric connection terminal holder 41, the claw portion 421 is bent radially inward, which is shown in fig. 3; if the groove 412 is located radially inward of the electric connection terminal holder 41, the claw portion 421 is bent radially outward, which is not shown in the drawing.
With the structure, when the coil lead-out wire is connected with the claw part, the coil lead-out wire can be hung on the claw part for connection, the operation is more convenient, and the coil lead-out wire is not easy to fall off.
In some embodiments, the outer diameter of the stator core 10 is 40mm or less. Thus, the small motor can be easily assembled, but the present invention is not limited thereto, and the outer diameter of the stator core 10 may have other dimensions.
It is to be noted that the above merely illustrates the structure of the stator assembly related to the present application, but the present application is not limited thereto, and appropriate modifications may be made on the basis of the above embodiments. In addition, the above is only an exemplary description of each component, but the present application is not limited thereto, and the specific content of each component may also refer to the related art; it is also possible to add components not shown in fig. 1 to 3 or to reduce one or more components in fig. 1 to 3. Regarding other configurations and structures of the stator assembly, reference may be made to the related art, and description thereof will be omitted.
According to the embodiments of the present application, in a stator structure molded (i.e., resin poured between teeth), on the one hand, the electrical connection of the coil lead wires and the power supply terminals is performed using a resin holder at the time of molding. The coil lead wires are pulled from between the teeth to a position radially outside the resin holder, the coil lead wires are pulled against the notches of the edge of the resin holder to the claw portions of the electrical connection terminals for electrical connection, and then the whole is resin-cast. Since the coil lead wires are not connected to the claw portions of the electric connection terminals through the through holes extending through the resin holder in the axial direction between the teeth, interference with the flow of the resin is not generated at the time of molding, and workability is improved. On the other hand, since the coil lead wire is pulled from the radially outer side of the claw portion of the electrical connection terminal to the claw portion, it is possible to prevent the coil lead wire from interfering with the claw portion of the electrical connection terminal and to prevent the coil lead wire from pulling the electrical connection terminal toward the one side in the circumferential direction and tilting, as compared with a structure in which the coil lead wire passes through the through hole and extends from the lower side in the axial direction of the claw portion of the electrical connection terminal to the claw portion of the electrical connection terminal.
Embodiments of the second aspect
Embodiments of the present application provide a mold formed stator comprising a stator assembly as described in embodiments of the first aspect, with resin injected into the tooth slots between the teeth of the stator assembly. Since the structure of the stator assembly has been described in detail in the embodiment of the first aspect, the contents thereof are incorporated herein, and the description thereof is omitted here.
Fig. 4 is a schematic diagram of an example of a mold-formed stator according to an embodiment of the present application, and as shown in fig. 1 and 4, in some embodiments, coil lead-out wires 31 of a stator assembly are led to claw portions 421 of electric connection terminals 42 along an electric connection terminal holder 41 of the stator assembly from a radially outer side to a radially inner side, the coil lead-out wires 31 are radially inner than an outer circumferential surface of a stator core 10 of the stator assembly, the coil lead-out wires 31 and the claw portions 421 are covered with resin to form a resin wall 50 (see fig. 4), and the outer circumferential surface of the resin wall 50 is radially inner than the outer circumferential surface of the stator core 10 in the same radial direction or is located in the.
With this structure, the coil lead wires 31 can be engaged with the grooves 412 of the electrical connection terminal holder 41 during the stator molding, and the molding can be made easier.
It is to be noted that the above merely illustrates the structure of the stator related to the present application, but the present application is not limited thereto, and appropriate modifications may be made on the basis of the above embodiments. In addition, the above is only an exemplary description of each component, but the present application is not limited thereto, and the specific content of each component may also refer to the related art; it is also possible to add components not shown in fig. 4 or to reduce one or more of the components in fig. 4. Regarding other configurations and structures of the stator, the related art can be referred to, and the description thereof is omitted here.
Examples of the third aspect
Embodiments of the present application provide a motor comprising a moulded stator as described in embodiments of the second aspect. Since the structure of the molded stator has been described in detail in the embodiments of the first aspect and the embodiments of the second aspect, the contents thereof are incorporated herein, and the description thereof is omitted here.
It should be noted that, the above description has been made only for the structure of the stator of the motor related to the present application, but the present application is not limited thereto, and as for other structures and structures of the motor, the related art may be referred to, and the description is omitted here.
Embodiments of the fourth aspect
Embodiments of the present application provide an electrical product having a motor as described in embodiments of the third aspect. Since the structure of the motor has been described in detail in the embodiments of the first aspect, the second aspect, and the third aspect, the contents thereof are incorporated herein, and the description thereof is omitted here.
In the embodiment of the present invention, the electric product may be any electric device provided with a motor of a stator molded by molding, for example, an indoor unit of an air conditioner, an outdoor unit of an air conditioner, a water dispenser, a washing machine, a sweeper, a compressor, a blower, a mixer, or other household appliances, or a pump, a conveyor, an elevator, a standard industrial machine, a wind power generator, a grinding mill, a traction motor, or other industrial devices, or various information processing devices, or may be various parts of an automobile, such as an electric power steering system of an automobile, a sunroof adjusting part of an automobile, a seat adjusting part, a transmission, a brake device, or the like.
The present application has been described in conjunction with specific embodiments, but it should be understood by those skilled in the art that these descriptions are intended to be illustrative, and not limiting. Various modifications and adaptations of the present application may occur to those skilled in the art based on the spirit and principles of the application and are within the scope of the application.
Preferred embodiments of the present application are described above with reference to the accompanying drawings. The many features and advantages of the embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the embodiments that fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the embodiments of the present application to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.
Claims (10)
1. A stator assembly, comprising:
a stator core that is arranged in a cylindrical shape around a central axis and has a plurality of teeth arranged in a circumferential direction;
an insulating member covering the tooth portion of the stator core;
a coil wound around the tooth portion of the stator core with the insulator interposed therebetween; and
a terminal block including a resin-made electric connection terminal holder mounted on the insulating member, and an electric connection terminal held by the electric connection terminal holder and connected to an external power supply and a coil lead wire;
it is characterized in that the preparation method is characterized in that,
the electric connection terminal retainer is provided with a through hole which penetrates along the axial direction and a plurality of grooves which are positioned on the edge of the radial outer side or the radial inner side of the electric connection terminal retainer;
the electric connection terminal has a claw portion, and is within a range of the electric connection terminal holder as viewed in an axial direction;
the coil lead-out wire is led out from a tooth groove between two adjacent tooth parts to one side close to the groove, is hung on the groove and led to the claw part of the electric connection terminal, and is electrically connected with the claw part, and the opening of the groove is positioned on the radial outer side or the radial inner side of the tooth groove.
2. The stator assembly of claim 1,
at least two of the grooves each accommodate two of the coil lead-out wires.
3. The stator assembly of claim 2,
the electrical connection terminal further includes an electrical connection portion held by the electrical connection terminal holder, and the claw portion extends from a circumferential side of the electrical connection portion in a direction away from the electrical connection portion.
4. The stator assembly of claim 3,
the claw portion and the coil lead-out wire are located on the same side of the electric connection portion in the circumferential direction, the claw portion is bent along a plane perpendicular to the axial direction, and an opening formed after bending is closer to the electric connection portion relative to the coil lead-out wire hung on the claw portion.
5. The stator assembly of claim 4,
the claw portion is bent toward a direction away from the groove.
6. The stator assembly of any of claims 1 through 5,
the outer diameter of the stator core is 40mm or less.
7. A mold-formed stator comprising the stator assembly according to any one of claims 1 to 6, wherein resin is injected into the slots between the teeth of the stator assembly.
8. The mold-formed stator according to claim 7, wherein coil lead-out wires of the stator assembly are led to claw portions of the stator assembly along an electric connection terminal holder of the stator assembly from a radially outer side to a radially inner side, the coil lead-out wires are located radially inward of an outer peripheral surface of a stator core of the stator assembly, the coil lead-out wires and the claw portions are covered with resin to form resin walls, and an outer peripheral surface of the resin walls is located radially inward of the outer peripheral surface of the stator core in the same radial direction or is located in the same radial dimension.
9. A motor comprising a moulded stator according to claim 7 or 8.
10. An electrical product, characterized in that it comprises a motor according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021402298.6U CN212660025U (en) | 2020-07-16 | 2020-07-16 | Stator assembly, molded stator, motor and electric product |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021402298.6U CN212660025U (en) | 2020-07-16 | 2020-07-16 | Stator assembly, molded stator, motor and electric product |
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| Publication Number | Publication Date |
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| CN212660025U true CN212660025U (en) | 2021-03-05 |
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| CN202021402298.6U Active CN212660025U (en) | 2020-07-16 | 2020-07-16 | Stator assembly, molded stator, motor and electric product |
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| CN (1) | CN212660025U (en) |
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