CN212412928U - Motor and electric product - Google Patents

Abstract

The embodiment of the application provides a motor and electric product, the motor has: a rotor; a stator; the 1 st bearing and the 2 nd bearing; a housing; a bearing retainer; and a1 st cover, wherein the motor further has: a1 st conductive member having one end connected to lead-out wires extending from a plurality of coils wound on a stator; and a2 nd conductive member having a holding portion held by the 1 st lid, one end portion of the 1 st conductive member being connected to the other end portion of the 1 st conductive member, the 1 st lid having a1 st opening penetrating the 1 st lid in the axial direction, the other end portion of the 1 st conductive member and the one end portion of the 2 nd conductive member being connected in the 1 st opening, the 1 st opening being covered with the 2 nd lid. With this configuration, the connection between the coil lead wire and the conductive member and the sealing of the opening can be ensured, and the reliability and the water resistance of the motor can be improved.

Description

Motor and electric product

Technical Field

The embodiment of the application relates to the field of electromechanics, in particular to a motor and an electric product.

Background

Currently, there is a demand for waterproofing motors used for automobiles, motorcycles, electric bicycles, and the like.

In japanese patent application laid-open No. 01-030656 (jp-a-64-030656), a socket made of synthetic resin is insert-molded on an aluminum end cap, and conductive terminals of the socket and lead wires of a stator coil are insert-molded in a solderable manner. The lead-out wire is led out through a protective plate made of an annular insulating material. A connection opening covered with a cover is formed above the conductive terminal of the socket after the lead wire and the conductive terminal are soldered.

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

The inventors found that no specific drawing and supporting method of the lead wires is mentioned in the aforementioned patent documents. Further, since the stator is covered with a protective plate made of an annular insulating material and is not visible, it is not possible to confirm whether or not the lead wire is correctly wound. If the lead wire is not correctly wound, the rotor and the lead wire may be in contact with each other and broken when the motor rotates.

In order to solve at least one of the above-described problems or other similar problems, embodiments of the present application provide a motor and an electric product to ensure waterproofness and to ensure reliable connection of lead wires and terminals.

According to an aspect of embodiments of the present application, there is provided a motor having:

a rotor that rotates about a central axis;

a stator located radially outside the rotor, disposed to face the rotor, and having a plurality of coils wound around the stator;

a1 st bearing and a2 nd bearing that rotatably support the rotor with respect to the stator;

a housing having a1 st flat plate portion radially expanded and a cylindrical portion axially extending upward from a radially outer edge of the 1 st flat plate portion, thereby forming an opening portion opened axially upward, the 1 st flat plate portion holding the 1 st bearing, the cylindrical portion accommodating the stator and the rotor radially inward;

a bearing holder which is arranged on the upper side in the axial direction of the stator and holds the 2 nd bearing; and

a1 st cover made of a resin material, disposed on an axially upper side of the bearing holder, and covering the opening of the housing,

wherein the motor further has:

a1 st conductive member having one end connected to lead-out wires extending from the plurality of coils;

a2 nd conductive member having a holding portion held by the 1 st cover, an end portion of one side of the holding portion being connected to an end portion of the other side of the 1 st conductive member,

the 1 st cover has a1 st opening part penetrating the 1 st cover in the axial direction,

the other end of the 1 st conductive member and the one end of the 2 nd conductive member are connected in the 1 st opening,

the 1 st opening is covered with a2 nd cover.

In some embodiments, the 1 st lid has a cylindrical portion extending to an axially upper side and surrounding the 1 st opening portion; the 2 nd conductive member further has a1 st bent portion extending from one side of the holding portion to an axially upper side; the other end of the 1 st conductive member and the end of the 1 st bent portion extend into the cylindrical portion and are connected to each other inside the cylindrical portion.

In some embodiments, the 2 nd conductive member further has a2 nd bent portion extending from the other side of the holding portion toward the axially upper side; the 1 st lid has a cylindrical connector portion surrounding the 2 nd bent portion; the connector portion is disposed radially outward of the 1 st opening.

In some embodiments, a sealing member is disposed inside the connector portion.

In some embodiments, the 1 st conductive member and the 2 nd conductive member are flat plate-shaped bus bars.

In some embodiments, at least a portion of the 2 nd conductive component is embedded in the 1 st cap by insert molding.

In some embodiments, the motor further has:

a circuit board disposed axially below the 1 st cover;

and a circuit board connection terminal having one end connected to the circuit board and the other end protruding from the No. 1 cover.

According to another aspect of the embodiments of the present application, there is provided an electric product, wherein the electric product has the motor of any one of the embodiments.

One of the beneficial effects of the embodiment of the application lies in: according to the embodiment of the present application, the connection between the coil lead wire and the conductive member and the sealing of the opening portion can be ensured, and the reliability and the water resistance of the motor can be improved.

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 motor of an embodiment of the present application;

FIG. 2 is an enlarged partial schematic view of the motor shown in FIG. 1;

FIG. 3 is a partially enlarged schematic view of another example of a motor of an embodiment of the present application;

FIG. 4 is a side view of a motor according to an embodiment of the present application;

FIG. 5 is an enlarged partial schematic view of the motor shown in FIG. 4;

fig. 6 is another schematic view of the motor of the 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 motor.

Fig. 1 is a schematic view of an example of a motor of an embodiment of the present application, as shown in fig. 1, having: rotor 10, stator 20, 1 st bearing 30, 2 nd bearing 40, housing 50, bearing holder 60, and 1 st cover 70. The rotor 10 rotates about the central axis O; a stator 20 located radially outside the rotor 10 and disposed to face the rotor 10, the stator 20 being wound with a plurality of coils 21; the 1 st bearing 30 and the 2 nd bearing 40 rotatably support the rotor 10 with respect to the stator 20; the housing 50 has a1 st flat plate portion 51 expanding in the radial direction and a cylindrical portion 52 extending upward in the axial direction from the outer edge in the radial direction of the 1 st flat plate portion 50, thereby forming an opening 53 opening upward in the axial direction, the 1 st flat plate portion 51 holding the 1 st bearing 30, the stator 20 and the rotor 10 being accommodated inside the cylindrical portion 52 in the radial direction; a bearing holder 60 disposed axially above the stator 20 and holding the 2 nd bearing 40; the 1 st cover 70 is made of a resin material, is disposed axially above the bearing holder 60, and covers the opening 53 of the housing 50.

In the embodiment of the present application, as shown in fig. 1, the motor further has:

a1 st conductive member 80 having one end portion a1 connected to lead lines 211 extending from the plurality of coils 21;

the 2 nd conductive member 90 has a holding portion 91, the holding portion 91 is held by the 1 st lid 70, and one end portion B1 of the holding portion is connected to the other end portion a2 of the 1 st conductive member 80.

Fig. 2 is a partially enlarged view of fig. 1, and as shown in fig. 2, in the present embodiment, the 1 st lid 70 has the 1 st opening 71 axially penetrating the 1 st lid 70, the other end a2 of the 1 st conductive member 80 and the one end B1 of the 2 nd conductive member 90, and is connected in the 1 st opening 71, and the 1 st opening 71 is covered with the 2 nd lid 100.

With this configuration, the connection between the coil lead wire and the conductive member and the sealing of the opening can be ensured, and the reliability and the waterproof property of the motor can be improved.

In the embodiment of the present application, the 2 nd cover 100 may be made of a resin material, and the 2 nd cover 100 may be fixed on the 1 st cover 70 by an adhesive, thermal welding, or the like to cover the 1 st opening 71. The present application is not limited thereto and the 2 nd cover 100 may be made of other materials and fixed to the 1 st cover 70 by other practicable means.

In the embodiment of the present application, the bearing holder 60 has a hole or a slit (not shown), through which the lead-out wire 211 can be led out to the upper side of the bearing holder 60, that is, the side axially distant from the stator 20, as shown in fig. 1 and 2. As shown in fig. 2, the end C1 of the lead wire 211 is connected to the end a1 of the 1 st conductive member 80 on the upper side of the bearing holder 60 by welding or the like.

In the embodiment of the present application, as shown in fig. 1, the 1 st cover 70 may be fixed to the cabinet 50 by a fixing member such as a screw. An O-ring, a gasket, an adhesive, etc. may be disposed between the 1 st cover 70 and the housing 50 to inhibit water from entering the motor.

Fig. 3 is a partially enlarged schematic view of another example of the motor of the embodiment of the present application, in which the same reference numerals are used for the same components as those of the example of fig. 1, and a description thereof will not be repeated.

In some embodiments, as shown in fig. 3, the 1 st cap 70 has a cylindrical portion 72 extending to the axially upper side and surrounding the 1 st opening portion 71; conductive member 2 90 further has a1 st bent portion 92 extending axially upward from one side (left side in fig. 3) of holding portion 91; the other end a2 of the 1 st conductive member 80 and the end B2 of the 1 st bent portion 92 extend into the cylindrical portion 72 and are connected to each other inside the cylindrical portion 72.

With this configuration, the portion where 1 st conductive member 80 and 2 nd conductive member 90 are connected becomes long, and the reliability of the motor can be improved.

In the embodiment of the present application, the 1 st lid 70 is a resin molded article obtained by insert molding the 2 nd conductive member 90. The 2 nd conductive member 90 has a holding portion 91 held by the resin portion of the 1 st cover 70 and an end portion located on the inner side of the 1 st opening 71. The holding portion 91 extends in a direction (the left-right direction shown in fig. 3) perpendicular to the axial direction (the up-down direction shown in fig. 3). The end of the 2 nd conductive member 90 located on the inner side of the 1 st opening 71 protrudes from the end of the holding portion 91 into the 1 st opening 71. The end portion of the 2 nd conductive member 90 on the one side located inside the 1 st opening 71 includes a1 st bent portion 92 extending upward and connected to the end portion a2 on the other side of the 1 st conductive member 80.

In some embodiments, as shown in fig. 2 and 3, the 2 nd conductive member 90 further has a2 nd bent portion 93 extending from the other side (right side shown in fig. 3) of the holding portion 91 to the axially upper side; as shown in fig. 3, the 1 st cover 70 has a cylindrical connector portion 73 surrounding the 2 nd bent portion 93; the connector portion 73 is disposed radially outward of the 1 st opening 71.

With this structure, it is convenient to connect with other equipment or the connector of the external power supply. Further, since the 1 st cover is fixed to the housing, stress of the connector portion can be received by the housing at the time of connection.

In the present embodiment, the other end B3 of the 2 nd conductive member 90 is located inside the connector portion 73. The connector 73 may extend radially outward from the side surface of the 1 st cover 70. As in the present embodiment, it preferably extends upward from the upper surface of the 1 st cover 70. With such a configuration, when the connector 73 is connected to another device or an external power supply, stress applied to the connector 73 can be received by the housing 50.

Fig. 4 is a side view of a motor according to an embodiment of the present application, and fig. 5 is a partially enlarged schematic view of a portion of the motor shown in fig. 4, which is indicated by a dashed line frame, in which the same reference numerals are used for the same components as those in the examples of fig. 1 to 3, and a description thereof will not be repeated.

In some embodiments, as shown in fig. 5, a sealing member 731 is provided inside the connector portion 73. By providing the sealing member 731, the sealing performance of the connector portion 73 is improved.

In the embodiment of the present application, the sealing part 731 may be formed by potting or may be formed by a gasket, and the present application is not limited thereto.

In some embodiments, electrically conductive members 80 and 90 are flat plate-like bus bars. Since the flat plate-like bus bar has rigidity and can extend in the axial direction without tilting, the welding work in the 1 st opening 71 becomes easy.

In some embodiments, as shown in fig. 1-3 and 5, at least a portion of the 2 nd conductive component 90 is embedded in the 1 st cap 70 by insert molding. With this structure, the fixing step of the 2 nd conductive member 90 can be reduced.

In the embodiment of the present application, the bus bar may be fixed to the axial lower side of the 1 st cover 70 by thermal welding, press fitting, or the like in advance, but the present application is not limited thereto.

Fig. 6 is another schematic view of the motor of the embodiment of the present application, showing the condition of the axially upper side of the motor.

In some embodiments, as shown in fig. 6, the motor further has: a circuit board 110 and a circuit board connection terminal 120, wherein the circuit board 110 is disposed at the lower side of the 1 st cover 70 in the axial direction, one end of the circuit board connection terminal 120 is connected to the circuit board 110, and the other end of the circuit board connection terminal 120 protrudes from the 1 st cover 70.

With this structure, the circuit board can be arranged in the sealed space.

In the embodiment of the present application, a position detection sensor, such as a hall IC, an MR sensor, or the like, may be disposed on the circuit 110. In addition, other elements may be configured on the circuit board 110, and reference may be made to related technologies, which are not described herein again.

It is to be noted that the above merely exemplifies the 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 respective 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 6 or to reduce one or more components in fig. 1 to 6. Regarding other configurations and structures of the motor, reference may be made to the related art, and description thereof is omitted here.

According to the embodiment of the present application, the connection of the coil lead wire and the conductive member and the sealing of the opening portion can be ensured, and the reliability and the waterproof property of the motor can be improved.

Embodiments of the second aspect

Embodiments of the present application provide an electrical product having a motor as described in embodiments of the first aspect. Since the structure of the motor 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.

In the embodiment of the present invention, the electric product may be any electric device provided with a motor, 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 an industrial device such as a pump, a conveyor, an elevator, a standard industrial universal machine, a wind power generator, a grinding machine, a traction motor, or various information processing devices, or may be various parts of an automobile, such as an automobile electric power steering system, an automobile sunroof adjusting part, 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 (8)

1. A motor, the motor having:

a rotor that rotates about a central axis;

a stator located radially outside the rotor, disposed to face the rotor, and having a plurality of coils wound around the stator;

a1 st bearing and a2 nd bearing that rotatably support the rotor with respect to the stator;

a housing having a1 st flat plate portion radially expanded and a cylindrical portion axially extending upward from a radially outer edge of the 1 st flat plate portion, thereby forming an opening portion opened axially upward, the 1 st flat plate portion holding the 1 st bearing, the cylindrical portion accommodating the stator and the rotor radially inward;

a bearing holder which is arranged on the upper side in the axial direction of the stator and holds the 2 nd bearing; and

a1 st cover made of a resin material, disposed on an axially upper side of the bearing holder, and covering the opening of the housing,

characterized in that the motor further has:

a1 st conductive member having one end connected to lead-out wires extending from the plurality of coils;

a2 nd conductive member having a holding portion held by the 1 st cover, an end portion of one side of the holding portion being connected to an end portion of the other side of the 1 st conductive member,

the 1 st cover has a1 st opening part penetrating the 1 st cover in the axial direction,

the other end of the 1 st conductive member and the one end of the 2 nd conductive member are connected in the 1 st opening,

the 1 st opening is covered with a2 nd cover.

2. The motor of claim 1,

the 1 st cover has a cylinder portion extending upward in the axial direction and surrounding the 1 st opening;

the 2 nd conductive member further has a1 st bent portion extending from one side of the holding portion to an axially upper side;

the other end of the 1 st conductive member and the end of the 1 st bent portion extend into the cylindrical portion and are connected to each other inside the cylindrical portion.

3. The motor according to claim 1 or 2,

the 2 nd conductive member further has a2 nd bent portion extending from the other side of the holding portion toward the axially upper side;

the 1 st cap further has a cylindrical connector portion surrounding the 2 nd bent portion;

the connector portion is disposed radially outward of the 1 st opening.

4. The motor of claim 3,

a sealing member is provided inside the connector portion.

5. The motor of claim 1,

the 1 st conductive member and the 2 nd conductive member are flat plate-shaped bus bars.

6. The motor of claim 1,

at least a part of the 2 nd conductive member is embedded in the 1 st cover by insert molding.

7. The motor of claim 1, further comprising:

a circuit board disposed axially below the 1 st cover;

and a circuit board connection terminal having one end connected to the circuit board and the other end protruding from the No. 1 cover.

8. An electrical product, characterized in that the electrical product has a motor according to any one of claims 1 to 7.

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