CN216774538U - Motor and electric product - Google Patents
Motor and electric product Download PDFInfo
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- CN216774538U CN216774538U CN202122974383.0U CN202122974383U CN216774538U CN 216774538 U CN216774538 U CN 216774538U CN 202122974383 U CN202122974383 U CN 202122974383U CN 216774538 U CN216774538 U CN 216774538U
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Abstract
The embodiment of the application provides a motor and electric product, this motor includes: a rotor having a rotating shaft that rotates about a central axis; a stator radially opposed to the rotor; a circuit board fixed to the stator and provided with a plurality of electronic components; and a housing for accommodating the stator, the circuit board having a base portion having at least one opening portion in a circumferential direction thereof, the opening portion being fitted with a fitting portion of the stator, and a gap through which a lead wire drawn out from the stator passes being provided between an edge of the opening portion and the fitting portion. The number of the openings in the circuit board and the area of the openings can be reduced, so that a large area is reserved in the circuit board for arranging electronic elements or electronic circuits.
Description
Technical Field
The present application relates to the field of electromechanics, and in particular, to a motor and an electrical product.
Background
In the motor, a rotor, a stator, and a circuit board are provided, the circuit board being fixedly disposed with respect to the stator. The stator has a coil wire, one end of which is soldered to the circuit board so as to be electrically connected to the electronic circuit on the circuit board, whereby the electronic circuit board can supply power to the coil wire.
Fig. 1 is a schematic view of a circuit board in a conventional motor. As shown in fig. 1, in the circuit board 100, a first through hole 101 for passing a lead wire is provided, wherein the lead wire is drawn from a winding wire of the stator. The number of lead wires may be 3, for example, and the lead wires correspond to the u, v, and w three-phase windings of the stator, respectively. The number of the first through holes 101 may be 3, for example, for 3 leads to pass through. The circuit board 100 is further provided with a second through hole 102, and the second through hole 102 can be penetrated by a screw, so that the circuit board 100 can be fixed to a housing or a rotor of the motor by the screw. The number of the second through holes 102 may be 2 or more, for example, 3.
It should be noted that the above background description is only for the sake of clarity and complete description of the technical solutions of the present invention 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 utility model.
SUMMERY OF THE UTILITY MODEL
The inventors of the present application found that: in the circuit board 100 shown in fig. 1, in order to pass a lead and position the circuit board, a first through hole 101 and a second through hole 102 are provided, respectively, so that the total amount of the first through hole 101 and the second through hole 102 is large and occupies a large area in the circuit board 100, resulting in a limitation in an area for disposing electronic components or electronic circuits in the circuit board 100.
In order to solve the above-described problems or the like, the present application provides a motor and an electric product in which an opening portion of a circuit board can simultaneously perform a dual function of passing a lead wire therethrough and positioning the circuit board, whereby the number of openings in the circuit board and the area of the openings can be reduced, thereby leaving a large area in the circuit board for arranging electronic components or electronic circuits.
According to an aspect of an embodiment of the present application, there is provided a motor including:
a rotor having a rotating shaft that rotates about a central axis;
a stator radially opposed to the rotor;
a circuit board fixed to the stator and provided with a plurality of electronic components; and
a housing for accommodating the stator,
the circuit board has a base portion having at least one opening portion in a circumferential direction thereof, the opening portion being fitted with the fitting portion of the stator, and a gap through which a lead wire drawn out from the stator passes is provided between an edge of the opening portion and the fitting portion of the stator.
According to another aspect of the embodiments of the present application, wherein the number of the opening portions is at least three.
According to another aspect of the embodiments of the present application, the circuit board surface is provided with solder pads, the solder pads are connected to one ends of the leads, and the number of the solder pads is the same as that of the opening portions.
According to another aspect of the embodiment of the present application, the welding point overlaps at least a part of the corresponding opening portion in a radial direction.
According to another aspect of the embodiments of the present application, wherein the welding spots are arranged inside the corresponding openings in a radial direction.
According to another aspect of the embodiment of the present application, the number of the welding points is at least three, and the distances from the at least three welding points to the outer edge of the base part of the circuit board are different.
According to another aspect of an embodiment of the present application, wherein the stator includes:
a wire wrap, wherein the lead is part of the wire wrap;
a first insulating member covering a surface of one axial end of the winding wire; and
a second insulating member covering a surface of the other end of the winding wire in the axial direction,
the fitting portion is provided at an axial end of the second insulator that is away from the winding wire.
According to another aspect of the embodiment of the present application, wherein the outer wall of the second insulating member is provided with a plurality of circumferentially extending grooves, the plurality of grooves being distributed in the axial direction.
According to another aspect of the embodiments of the present application, wherein the edge of the opening portion includes:
a first shape in the shape of a straight line segment and a second shape in the shape of a curved line,
the second shape is radially closer to the axis of rotation than the first shape.
According to another aspect of the embodiments of the present application, wherein the second shape is a circular arc protruding toward the rotation shaft.
According to another aspect of the embodiments of the present application, wherein the material of the housing is a metal material.
According to another aspect of embodiments of the present application, there is provided an electric product including the motor according to any one of the above-described embodiments.
The utility model has the beneficial effects that: the preload member having elasticity is provided between the bearing of the motor and the housing, whereby the impact force of the housing on the bearing can be buffered, and the vibration conducted to the housing through the bearing can be reduced.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the utility model may be employed. It should be understood that the embodiments of the utility model are not so limited in scope. The embodiments of the utility model 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 utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. It is obvious that the drawings in the following description are only some embodiments of the utility model, 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 diagram of a circuit board in a conventional motor;
FIG. 2 is an exploded view of the motor of the present embodiment 1;
FIG. 3 is a schematic view of the motor as viewed from the side of the circuit board;
FIG. 4 is a schematic side view of a motor of embodiment 1 of the present application with a housing removed;
fig. 5 is a perspective view of the motor of embodiment 1 of the present application, with the housing removed, viewed from the side of the circuit board.
Detailed Description
The foregoing and other features of the utility model will become apparent from the following description taken in conjunction with the accompanying drawings. In the description and drawings, particular embodiments of the utility model have been disclosed in detail as being indicative of some of the embodiments in which the principles of the utility model may be employed, it being understood that the utility model is not limited to the embodiments described, but, on the contrary, is intended to cover all modifications, variations, and equivalents falling within the scope of the appended claims.
In the embodiments of the present application, the terms "first", "second", and the like are used for distinguishing different elements by reference, but do not denote a spatial arrangement, a temporal order, or the like of the elements, and the elements should not be limited by the terms. 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 include the plural forms and are to be construed broadly as "a" or "an" and not limited to the meaning of "a" or "an"; furthermore, the term "the" 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 invention, for the sake of convenience of description, the direction in which the central axis C of the rotary shaft 211 extends is referred to as "axial direction"; a radial direction centered on the central axis is referred to as a "radial direction"; the direction around the center axis is referred to as "circumferential direction". The above description of the orientation is for convenience of illustration only and is not intended to limit the orientation of the motor and electrical product of the present application during manufacture and use.
Example 1
The embodiment 1 of the present application provides a motor.
Fig. 2 is an exploded view of the motor of embodiment 1 of the present application, fig. 3 is a view when the motor is viewed from a circuit board side, fig. 4 is a side view when the motor of embodiment 1 of the present application is removed from a housing, and fig. 5 is a perspective view when the motor of embodiment 1 of the present application is removed from the housing, viewed from the circuit board side.
As shown in fig. 2, the motor 2 includes: a rotor 21, a stator 22, a circuit board 23, and a housing 24.
The rotor 21 has a rotation shaft 211 that rotates about the center axis C.
The stator 22 is radially opposed to the rotor 21. For example, the stator 22 is located radially outside the rotor 21, whereby the motor 2 is formed as an inner rotor motor; for another example, the stator 22 is positioned radially inward of the rotor 21, and the motor 2 is formed as an outer rotor motor.
The circuit board 23 may be fixed to the stator 22, and a plurality of electronic components (not shown) may be arranged.
The housing 24 is used to house the stator 22, for example, the stator 22 may be housed inside the housing 24.
As shown in fig. 2, 3, 4, and 5, the circuit board 23 has a base portion 230. The base portion 230 has at least one opening portion 231 in the circumferential direction, and the opening portion 231 is fitted to a fitting portion 221 (not shown in fig. 2) of the stator 22, whereby positioning of the circuit board 23 with respect to the stator 22 can be achieved. A gap 2310 (shown in fig. 3 and 5) is provided between the edge of the opening 231 and the fitting portion 221, and the lead wire 222 can be inserted through the gap 2310, and the lead wire 222 is led out from the stator 22, for example. In fig. 3 and 5, the gap 2310 is located between the edge of the opening 231 and the radial direction of the fitting portion 221, but the present embodiment is not limited thereto, and the gap 2310 may be located between the edge of the opening 231 and the circumferential direction of the fitting portion 221, or have a gap 2310 between the circumferential direction and the radial direction.
According to embodiment 1, the opening portion of the circuit board can simultaneously achieve the dual functions of passing the lead wires and positioning the circuit board, whereby the number of openings and the area of the openings in the circuit board can be reduced, thereby leaving a large area in the circuit board for disposing electronic components or electronic circuits.
In the present embodiment, the number of the lead wires 222 may be 3, for example, so that the 3 lead wires 222 may correspond to the u, v, w three-phase winding wires of the stator 22, respectively. The number of the openings 231 may be at least one. For example, the number of the openings 231 is 1, and the 3 leads 222 may all pass through the 1 opening 231; for another example, the number of the openings 231 is 2, 2 leads 222 may pass through 1 opening 231, and the remaining 1 lead 222 passes through the other opening 231; for another example, the number of the openings 231 is at least 3, and 3 leads 222 pass through 1 corresponding opening 231, respectively. In the following description of the present application, the case where the number of the openings 231 is at least 3 will be described.
As shown in fig. 3, the edge of the opening 231 includes: a first shape 2311 in the shape of a straight line segment and a second shape 2312 in the shape of a curved line. Wherein the second shape 2312 is radially closer to the rotational axis 211 than the first shape 2311. For example, the second shape 2312 may be a circular arc protruding toward the rotation shaft 211. Thus, the first shape 2311 allows the fitting portion 221 to be sandwiched from both sides in the circumferential direction, thereby positioning the circuit board 23; further, the lead 222 is passed through the region of the opening surrounded by the second shape 2312, and the lead can be prevented from being damaged.
In the present embodiment, the first shape 2311 may match the shapes of both ends of the fitting portion 221 in the circumferential direction. For example, in the case where the shapes of both ends of the fitting portion 221 in the circumferential direction are straight lines, the first shape 2311 may be a straight line segment shape; for another example, when the shapes of both ends of the fitting portion 221 in the circumferential direction are curved lines (e.g., arc lines), the first shape 2311 may be an arc segment shape.
As shown in fig. 3 and 5, the surface of the circuit board 23 is provided with solder pads 232. The solder 232 is connected to one end of the lead 222, whereby the lead 222 can be electrically connected to the circuit board 23. The number of the pads 232 is the same as that of the openings 231, and for example, the number of the pads 232 is at least 3.
As shown in fig. 3 and 5, the spot 232 may not overlap the corresponding opening 231 in the radial direction, and for example, the spot 232 is disposed radially inward of the corresponding opening 231 in the radial direction. Wherein "corresponding" means that: when a lead connected to a certain pad 232 is led out from a certain opening 231, the pad 232 corresponds to the opening 231. For example, in FIG. 5, the lead 222-1 is connected to the pad 232-1, and the lead 222-1 passes through the opening 231-1, then the opening 231-1 is the opening corresponding to the pad 232-1, wherein the pad 232-1 is located radially inward of the opening 231-1.
In addition, the present embodiment is not limited to this, and for example, the welding spots 232 and the corresponding openings 231 may at least partially overlap in the radial direction.
As shown in fig. 3 and 5, in the case where the number of the pads 232 is plural (for example, the number of the pads 232 is at least 3), the distances of the respective pads 232 to the outer edge 2301 of the base portion 230 of the circuit board 23 are not uniform. For example, the distance between the radially outer end of each solder joint 232 and the outer end edge 2301 of the base 230 is 2 mm to 2.6 mm, whereby the solder of the solder joint 232 can be prevented from flowing out of the outer end edge 2301 of the base 230, and the arrangement position of the solder joint 232 can be made more flexible.
As shown in fig. 4 and 5, the stator 22 includes: a coil 223, an upper insulator 224 and a lower insulator 225.
Winding 223 may be wound on a core (not shown), wherein lead 222 may be a part of winding 223, i.e. lead 222 may be drawn from winding 223.
The fitting portion 221 is provided at one axial end of the second insulator 225 away from the winding 223 (i.e., facing the circuit board 23) and is convex toward the circuit board 23, whereby the fitting portion 221 can be fitted to the opening 231 of the circuit board 23.
As shown in fig. 4 and 5, the outer wall of the second insulating member 225 is provided with grooves 2251 extending in the circumferential direction, and the number of the grooves 2251 may be 1 or 2 or more, for example, 3. The 2 or more grooves 2251 may be distributed in the axial direction, i.e., the 2 or more grooves 2251 may not be located at the same position in the axial direction. The grooves 2251 can be used to guide the winding, and for example, when the number of the grooves 2251 is 3, u-, v-, and w-phase windings 223 can be guided, respectively.
In the present embodiment, the material of the casing 24 is, for example, a metal material, so that the casing 24 can have high strength and provide sufficient protection for the structure inside the casing 24, and in addition, the metal material can also electromagnetically shield the internal structure from electromagnetic interference.
According to embodiment 1 of the present application, the opening portion of the circuit board can simultaneously achieve the dual functions of passing the lead wires therethrough and positioning the circuit board, whereby the number of openings in the circuit board and the area of the openings can be reduced, thereby leaving a large area in the circuit board for disposing electronic components or electronic circuits, enabling the reliability of the motor to be improved and/or the functions to be expanded.
Example 2
Since the structure of the motor has been described in detail in embodiment 1, the contents thereof are incorporated herein, and the description thereof is omitted here.
According to the embodiment, the opening part of the circuit board can simultaneously realize the double functions of leading wires to pass through and positioning the circuit board, thereby reducing the number of the openings in the circuit board and the area of the openings, reserving a larger area in the circuit board for arranging electronic elements or electronic circuits, improving the reliability of the motor and/or expanding the functions; further, reliability of the electric product is improved and/or functions are expanded.
While the utility model has been described with reference to specific embodiments, it will be apparent to those skilled in the art that these descriptions are illustrative and not intended to limit the scope of the utility model. Various modifications and alterations of this invention will become apparent to those skilled in the art based upon the spirit and principles of this invention, and such modifications and alterations are also within the scope of this invention.
Claims (12)
1. A motor, comprising:
a rotor having a rotating shaft that rotates about a central axis;
a stator radially opposed to the rotor;
a circuit board fixed to the stator and provided with a plurality of electronic components; and
a housing for accommodating the stator,
it is characterized in that the preparation method is characterized in that,
the circuit board has a base portion having at least one opening portion in a circumferential direction thereof, the opening portion being fitted with the fitting portion of the stator, and a gap through which a lead wire drawn out from the stator passes is provided between an edge of the opening portion and the fitting portion of the stator.
2. The motor of claim 1,
the number of the openings is at least three.
3. The motor of claim 1,
the surface of the circuit board is provided with a welding spot which is connected with one end of the lead,
the number of the welding points is the same as that of the opening parts.
4. The motor of claim 3,
the welding points are overlapped with at least one part of the corresponding opening part in the radial direction.
5. The motor of claim 3,
the welding spots are arranged on the inner side of the corresponding opening in the radial direction.
6. The motor of claim 3,
the number of the welding points is at least three, and the distances from the at least three welding points to the outer end edge of the base part of the circuit board are different.
7. The motor of claim 1,
the stator includes:
a wire wrap, wherein the lead is part of the wire wrap;
a first insulating member covering a surface of one axial end of the winding wire; and
a second insulating member covering a surface of the other end of the winding wire in the axial direction,
the fitting portion is provided at an axial end of the second insulator that is away from the winding wire.
8. The motor of claim 7,
the outer wall of the second insulating member is provided with a plurality of grooves extending in the circumferential direction,
the plurality of grooves are distributed in the axial direction.
9. The motor of claim 1,
the edge of the opening part includes:
a first shape in the shape of a straight line segment and a second shape in the shape of a curved line,
the second shape is radially closer to the rotation axis than the first shape.
10. The motor of claim 9,
the second shape is an arc shape protruding toward the rotation axis.
11. The motor according to any one of claims 1 to 10,
the shell is made of a metal material.
12. An electrical product, characterized in that it comprises a motor according to any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122974383.0U CN216774538U (en) | 2021-11-30 | 2021-11-30 | Motor and electric product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122974383.0U CN216774538U (en) | 2021-11-30 | 2021-11-30 | Motor and electric product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216774538U true CN216774538U (en) | 2022-06-17 |
Family
ID=81965840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122974383.0U Active CN216774538U (en) | 2021-11-30 | 2021-11-30 | Motor and electric product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216774538U (en) |
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2021
- 2021-11-30 CN CN202122974383.0U patent/CN216774538U/en active Active
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