CN116742882A - motor - Google Patents

Abstract

An embodiment of the present application provides a motor including a power terminal assembly including a power terminal bus bar connecting an external power source and a motor coil, and a power terminal holder holding the power terminal bus bar, the power terminal bus bar including a main body portion extending in a direction perpendicular to an axial direction and a power terminal extending in the axial direction from the main body portion, a signal terminal assembly, and a bearing holder; the signal terminal assembly includes a signal terminal for transmitting an induction signal inside the motor to the outside of the motor and a signal terminal holder for holding the signal terminal; the power terminal holder and the signal terminal holder are formed in a split manner, and the signal terminal extends through the bearing holder in the axial direction. Therefore, the power terminal and the signal terminal are respectively molded on different resin retainers, so that the power terminal and the signal terminal are axially overlapped, and the radial dimension of the motor is further reduced.

Description

Motor

Technical Field

The application relates to the field of electromechanics, in particular to a motor.

Background

In the related art, a power terminal and a signal terminal of a motor are often molded to the same resin holder. However, the power supply terminals and the signal terminals are arranged on the same resin holder, resulting in a larger volume of the resin holder and thus a larger motor.

It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present application and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the application section.

Disclosure of Invention

In view of the problems noted in the background, embodiments of the present application provide a motor. The radial dimension of the motor is reduced by forming the power terminal and the signal terminal in different resin holders, respectively, so that the power terminal and the signal terminal are arranged in an overlapping manner in the axial direction.

According to an aspect of an embodiment of the present application, there is provided a motor including a power terminal assembly, a signal terminal assembly, and a bearing holder,

the power terminal assembly includes a power terminal bus bar connecting an external power source and a motor coil, the power terminal bus bar including a main body portion extending in a direction perpendicular to an axial direction and a power terminal extending in the axial direction from the main body portion, and a power terminal holder holding the power terminal bus bar;

the signal terminal assembly includes a signal terminal for transmitting an induction signal inside the motor to the outside of the motor and a signal terminal holder for holding the signal terminal;

the power terminal holder and the signal terminal holder are formed in a split manner, and the signal terminal extends through the bearing holder in the axial direction.

In some embodiments, the body portions of the signal terminals and the power terminal bus bars are at least partially coincident in the axial direction.

In some embodiments, one of the power terminal holder and the signal terminal holder has an interface portion, from which the power terminal and the signal terminal extend to the outside of the motor.

In some embodiments, the motor further comprises a circuit board located on the other axial side of the signal terminal holder; one axial side of the signal terminal retainer is connected to the bearing retainer, and the other axial side of the signal terminal retainer is connected to the circuit board.

In some embodiments, the circuit board is provided with a connecting hole, and the bearing retainer is provided with a through hole, and the through hole is axially opposite to the connecting hole; one end of the signal terminal passes through the through hole, and the other end of the signal terminal is inserted into the connecting hole.

In some embodiments, the motor further comprises an inductive magnetic ring assembly located on one axial side of the power terminal holder and on the other axial side of the circuit board, the inductive magnetic ring assembly not overlapping the power terminal holder in an axial direction.

In some embodiments, the signal terminal holder includes an integrally formed interface portion extending axially outside of the bearing holder; the power supply terminal and the signal terminal extend from the interface portion to the outside of the motor.

In some embodiments, within the interface portion, an axis of symmetry of the power terminal coincides with an axis of symmetry of the signal terminal.

In some embodiments, the resin forming the signal terminal holder is wrapped around the edge of the through hole.

In some embodiments, the power terminal and the signal terminal axially coincide with a stator of the motor.

One of the beneficial effects of the embodiment of the application is that: the power terminal and the signal terminal are respectively molded on different resin retainers, and are axially overlapped, so that the radial size of the motor is reduced.

Specific embodiments of the application are disclosed in detail below 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 application are not limited in scope thereby. The embodiments of the application include many variations, modifications and equivalents within the scope of the terms of the appended claims.

Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments in combination with or instead of the features of the other embodiments.

It should be emphasized that the term "comprises/comprising" when used herein is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps or components.

Drawings

Elements and features described in one drawing or one implementation of an embodiment of the application may be combined with elements and features shown in one or more other drawings or implementations. Furthermore, in the drawings, like reference numerals designate corresponding parts throughout the several views, and may be used to designate corresponding parts as used in more than one embodiment.

The accompanying drawings, which are included to provide a further understanding of embodiments of the application and 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 evident that the drawings in the following description are only some embodiments of the present application and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art. In the drawings:

fig. 1 is a schematic block diagram of one example of a motor of an embodiment of the present application.

Fig. 2 is a schematic view of an axial section of the motor shown in fig. 1.

Fig. 3 is a schematic view of a signal terminal holder.

Fig. 4 is a top view of the signal terminal holder.

Fig. 5 is a schematic view of a signal terminal holder and a signal terminal and a power terminal.

Fig. 6 is a top view of the signal terminal holder and signal terminal and power terminal.

Fig. 7 is a schematic view of one example of the bearing holder and the signal terminal holder as viewed from the axial side.

Fig. 8 is a schematic view of one example of the bearing holder and the signal terminal holder as seen from the other side in the axial direction.

Detailed Description

The foregoing and other features of the application will become apparent from the following description, taken in conjunction with the accompanying drawings. In the specification and drawings, there have been specifically disclosed specific embodiments of the application that are indicative of some of the ways in which the principles of the application may be employed, it being understood that the application is not limited to the specific embodiments described, but, on the contrary, the application includes all modifications, variations and equivalents falling within the scope of the appended claims. Various embodiments of the present application are described below with reference to the accompanying drawings. These embodiments are merely illustrative and not limiting of the application.

In the embodiments of the present application, the terms "first," "second," "upper," "lower," etc. are used to distinguish between different elements from each other by reference, but do not denote a spatial arrangement or a temporal order of the elements, which 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 "comprises," "comprising," "including," "having," and the like, are intended to reference the presence of stated features, elements, components, or groups of components, but do not preclude the presence or addition of one or more other features, elements, components, or groups of components.

In embodiments of the present application, the singular forms "a," an, "and" the "include plural referents and should be construed broadly to mean" one "or" one type "and not limited to" one "or" another; furthermore, the term "comprising" is to be interpreted as including both the singular and the plural, unless the context clearly dictates otherwise. Furthermore, 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 indicates otherwise.

In the following description of the embodiments of the present application, for convenience of description, a direction extending along or parallel to a central axis of a motor is referred to as an "axial direction", a radial direction centered on the central axis is referred to as a "radial direction", a direction around the central axis is referred to as a "circumferential direction", a side away from the central axis in the radial direction is referred to as a "radial outside", and a side closer to the central axis in the radial direction is referred to as a "radial inside". It is noted that these are for convenience of illustration only and do not limit the orientation of the motor in use and manufacture.

Embodiments of the present application will be described below with reference to the accompanying drawings.

Example of the first aspect

The embodiment of the application provides a motor.

Fig. 1 is a schematic view of an example of a motor 10 of an embodiment of the present application, and fig. 2 is a schematic view of an axial section of the motor 10 shown in fig. 1. As shown in fig. 2, the motor 10 includes a power terminal assembly 11, a signal terminal assembly 12, and a bearing holder 13, the power terminal assembly 11 including a power terminal bus bar 111 connecting an external power source and a motor coil, and a power terminal holder 112 holding the power terminal bus bar 111, the power terminal bus bar 111 including a main body portion 111-1 (not shown) extending in a direction perpendicular to an axial direction and a power terminal 111-2 extending in the axial direction from the main body portion 111-1; the signal terminal assembly 12 includes a signal terminal 121 transmitting an induction signal inside the motor to the outside of the motor and a signal terminal holder 122 holding the signal terminal.

In the embodiment of the present application, as shown in fig. 2, the power terminal holder 112 and the signal terminal holder 122 are molded separately, and the signal terminal 121 extends through the bearing holder 13 in the axial direction. Therefore, under the condition that the use space of the motor is limited, the radial dimension or the axial dimension of the motor can be reduced according to the requirement, and the miniaturization of the motor is facilitated.

In some embodiments, as shown in fig. 2, the signal terminals 121 and the body portion 111-1 of the power terminal bus bar 111 at least partially overlap in the axial direction. That is, the projection of the signal terminal 121 falls onto the main body portion 111-1 as viewed in the axial direction. Thereby, the radial dimension of the motor is reduced.

In some embodiments, one of the power terminal holder 112 and the signal terminal holder 122 has an interface portion from which the power terminal 111-2 and the signal terminal 121 extend to the outside of the motor. Thus, the power terminal holder and the signal terminal holder are formed in a split structure to reduce the size of the motor, and the convenience of connection between the power terminal and the signal terminal and the outside can be maintained.

In the embodiment of the present application, the signal terminal holder 122 is provided with the interface portion, and as shown in fig. 2, the signal terminal holder 122 is provided with the interface portion 123, and the power supply terminal 111-2 and the signal terminal 121 extend from the interface portion 123 to the outside of the motor.

Fig. 3 is a schematic view of the signal terminal holder 122, fig. 4 is a top view of the signal terminal holder 122, and the interface portion 123 is shown in fig. 3 and 4; fig. 5 is a schematic view of the signal terminal holder 122 and the power terminal 111-2 and the signal terminal 121, and fig. 6 is a plan view of the signal terminal holder 122 and the power terminal 111-2 and the signal terminal 121, as shown in fig. 5 and 6, the power terminal 111-2 and the signal terminal 121 extending from the interface portion 123 to the outside of the motor.

In some embodiments, as illustrated in fig. 2, the motor 10 further includes a circuit board 14 located on the other axial side (the lower axial side shown in fig. 2) of the signal terminal holder 122, one axial side (the upper axial side shown in fig. 2) of the signal terminal holder 122 is connected to the bearing holder 13, and the other axial side (the lower axial side shown in fig. 2) of the signal terminal holder 122 is connected to the circuit board 14. Therefore, the signal terminal retainer is formed by directly utilizing the connecting part of the circuit board and the bearing retainer, so that the space and the manufacturing cost are saved.

In the above-described embodiment, the connection manner of the signal terminal holder 122 with the bearing holder 13 and the circuit board 14 is not limited, and fig. 7 is a schematic view of one example of the bearing holder 13 and the signal terminal holder 122 as viewed from the axial side; fig. 8 is a schematic view of the bearing holder 13 and the signal terminal holder 122 as seen from the other axial side, and also shows the circuit board 14.

As shown in fig. 7 and 8, in some embodiments, the signal terminal holder 122 may be integrally formed with the bearing holder 13 by resin injection molding, and as shown in fig. 8, the circuit board 14 may be adhered to the signal terminal holder 122, and the signal terminal holder 122 may be connected to the bearing holder 13 and the circuit board 14 by heat welding or by other members (e.g., fixing members or assembling members, etc.), without being limited thereto.

In some embodiments, as shown in fig. 8, a connection hole 141 is provided on the circuit board 14, the bearing holder 13 has a through hole 131, the through hole 131 is axially opposite to the connection hole 141, one end of the signal terminal 121 passes through the through hole 131, and the other end of the signal terminal 121 is inserted into the connection hole 141. Thereby, the assembly is convenient and the space is saved.

In some embodiments, as shown in fig. 2, the motor 10 further includes an induction magnet ring assembly 15, an axial one side surface of which is located on one axial side (an axial upper side shown in fig. 2) of the circumferential other side surface of the power terminal holder 112, and is located on the other axial side (an axial lower side shown in fig. 2) of the circuit board 14, the induction magnet ring assembly 15 not overlapping the power terminal holder 112 in the axial direction.

That is, the projection of the inductive magnetic loop assembly 15 does not fall onto the power terminal holder 112, as viewed in the axial direction. For example, when the outer diameter of the induction magnet ring assembly 15 is circular and the inner diameter of the power terminal holder 112 is circular, the outer diameter of the induction magnet ring assembly 15 is within the inner diameter of the power terminal holder 112. Therefore, the radial size of the motor is reduced, interference between the power terminal retainer and the induction magnetic ring assembly during assembly is avoided, and the assembly is convenient.

In some embodiments, as shown in fig. 2 and 8, at least a portion of the circuit board 14 is annular, and a sensor 16 is disposed on the annular portion of the circuit board 14, the sensor 16 being axially opposite the inductive magnetic loop assembly 15. Thus, the rotation state of the motor is detected by the sensor and the induction magnetic ring assembly.

In some embodiments, as shown in fig. 2 and 7, the signal terminal holder 122 includes an integrally formed interface portion 123, the interface portion 123 extending axially outside the bearing holder 13; also, the power supply terminal 111-2 (see fig. 5 and 6) and the signal terminal 121 extend from the interface portion 123 to the outside of the motor. Therefore, the signal terminal retainer molding interface is directly utilized, no extra part is needed, and the manufacturing cost is saved.

In some embodiments, as shown in fig. 6, within interface portion 123, an axis of symmetry O of power terminal 111-2 and an axis of symmetry O' of signal terminal 121 coincide. Alternatively, the power supply terminal 111-2 may be located radially outside the signal terminal 121. I.e., the power supply terminal 111-2 and the signal terminal 121 are arranged in the radial direction. Thereby, the radial dimension of the interface 123 can be reduced.

In some embodiments, as shown in fig. 2, the resin 124 forming the signal terminal holder 122 is wrapped around the edge of the through hole 131 of the bearing holder 13. This enables the signal terminal holder to be reliably formed on the bearing holder 13, and also enables reliable insulation between the power supply terminal and the signal terminal and the bearing holder.

In the above-described embodiment, the resin 124 formed at the edge of the through hole 131 of the bearing holder 13 may be formed in an i-shape, that is, the resin 124 is formed at both the upper and lower surfaces at the edge of the through hole 131 of the bearing holder 13, whereby the fixation of the signal terminal holder 122 and the bearing holder 13 can be made more reliable.

In some embodiments, as shown in fig. 2, the motor 10 further includes a stator 17, and the power terminal 111-2 and the signal terminal 121 axially coincide with the stator 17 of the motor 10. Thus, the radial dimension of the motor can be reduced, which is further advantageous for miniaturization of the motor.

It is to be noted that the above has been described only by way of example of the composition and structure of the motor 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. Further, the respective components are described above by way of example only, but the present application is not limited thereto, and the specific contents of the respective components may also be referred to the related art; the motor may further include other components such as a rotor, a bearing, a housing, etc., and the description thereof will be omitted herein with reference to the related art.

As is apparent from the above embodiments, by molding the power supply terminal and the signal terminal in different resin holders, the power supply terminal and the signal terminal are arranged to overlap in the axial direction, and the radial dimension of the motor is further reduced.

Embodiments of the second aspect

An embodiment of the present application provides an electrical product comprising a motor 10 according to an embodiment of the first aspect. Since in the embodiment of the first aspect, the structure of the motor 10 has been described in detail, the contents thereof are incorporated herein, and the description thereof is omitted.

In the implementation of the present application, the electric product may be any electric device provided with a motor, and may be, 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 stirrer, or an industrial device such as a pump, a conveyor, an elevator, a standard industrial general purpose machine, a wind power generator, a grinding mill, a traction motor, or various information processing devices, or may be various parts of an automobile, such as an electric power steering system and a brake system of the automobile.

While the application has been described in connection with specific embodiments, it will be apparent to those skilled in the art that the description is intended to be illustrative and not limiting in scope. Various modifications and alterations of this application will occur to those skilled in the art in light of the spirit and principles of this application, and such modifications and alterations are also within the scope of this 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 which 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 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 motor includes a power terminal assembly, a signal terminal assembly, and a bearing holder,

the power terminal assembly includes a power terminal bus bar connecting an external power source and a motor coil, the power terminal bus bar including a main body portion extending in a direction perpendicular to an axial direction and a power terminal extending in the axial direction from the main body portion, and a power terminal holder holding the power terminal bus bar;

the signal terminal assembly includes a signal terminal for transmitting an induction signal inside the motor to the outside of the motor and a signal terminal holder for holding the signal terminal;

it is characterized in that the method comprises the steps of,

the power terminal holder and the signal terminal holder are formed in a split manner, and the signal terminal extends through the bearing holder in the axial direction.

2. The motor according to claim 1, wherein,

the main body portions of the signal terminals and the power terminal bus bars are at least partially overlapped in the axial direction.

3. The motor according to claim 1, wherein,

one of the power terminal holder and the signal terminal holder has an interface portion, and the power terminal and the signal terminal extend from the interface portion to the outside of the motor.

4. The motor according to claim 1, wherein,

the motor further comprises a circuit board which is positioned on the other axial side of the signal terminal retainer;

one axial side of the signal terminal retainer is connected to the bearing retainer, and the other axial side of the signal terminal retainer is connected to the circuit board.

5. The motor according to claim 4, wherein,

the circuit board is provided with a connecting hole, the bearing retainer is provided with a through hole, and the through hole is axially opposite to the connecting hole;

one end of the signal terminal passes through the through hole, and the other end of the signal terminal is inserted into the connecting hole.

6. The motor according to claim 4, wherein,

the motor further includes an induction magnet ring assembly located on one axial side of the power terminal holder and on the other axial side of the circuit board, the induction magnet ring assembly being non-overlapping in the axial direction with the power terminal holder.

7. The motor according to claim 5, wherein,

the signal terminal retainer comprises an integrally formed interface portion which extends axially outside the bearing retainer;

the power supply terminal and the signal terminal extend from the interface portion to the outside of the motor.

8. The motor of claim 7, wherein the motor is configured to control the motor,

in the interface portion, an axis symmetry line of the power supply terminal coincides with an axis symmetry line of the signal terminal.

9. The motor according to claim 5, wherein,

the resin forming the signal terminal holder is wrapped around the edge of the through hole.

10. The motor according to claim 1, wherein,

the power supply terminal and the signal terminal are overlapped with a stator of the motor in an axial direction.