Motors and electrical products

Abstract

A motor and an electrical product are provided. The motor has a rotor configured to be rotatable about a central axis, a stator configured to be disposed at an outer periphery of the rotor so as to be disposed in opposition to the rotor in a radial direction, a bus bar holder configured to be disposed at an axial side of the rotor and the stator, and a housing that is a cylindrical shape, the rotor, the stator, and the bus bar holder being housed inside the housing. An axial side of the bus bar holder has a protruding portion that abuts against a bottom of the housing. Thus, by providing the protruding portion of the bus bar holder to abut against the bottom of the housing instead of a conventional packing point, assembly errors can be reduced.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the field of electromechanics, and in particular to a motor and an electrical product. BACKGROUND

[0002] In the existing motor structure, a packing point arranged inside the casing is generally used to limit the axial movement of the stator core and the casing.

[0003] It should be noted that the above introduction to the technical background is only for the convenience of clearly and completely describing the technical solutions of the present application and for the convenience of the understanding of those skilled in the art. The above technical solutions cannot be considered as known to those skilled in the art only because they are described in the background section of the present application. SUMMARY

[0004] The inventor found that the existing packing point is arranged on the peripheral wall of the motor casing, and in the process of assembling the motor, the rotor and the stator need to be inserted into the casing. Due to the assembly error, the following situation may exist: the bus bar holder collides with the bottom of the motor in the state that the stator core does not contact the packing point, thereby causing damage to the motor.

[0005] To solve the above problems, embodiments of the present application provide a motor and an electrical product.

[0006] According to an aspect of embodiments of the present application, a motor is provided, having:

[0007] a rotor configured to be rotatable about a central axis;

[0008] a stator configured at an outer periphery of the rotor and arranged in a diametrical direction opposite to the rotor;

[0009] a bus bar holder arranged at an axial side of the rotor and the stator; and

[0010] a casing in a cylindrical shape, the rotor, the stator and the bus bar holder being accommodated inside the casing;

[0011] wherein an axial side of the bus bar holder has a protruding portion abutting against a bottom of the casing.

[0012] In some embodiments, the protruding portion and the bus bar holder are integrally formed.

[0013] In some embodiments, the number of the protruding portions is more than three.

[0014] In some embodiments, the axial side of the bus bar holder further has a plurality of power terminals and a fixing portion,

[0015] The fixing part is integrally formed and has a circumferential extension, a plurality of sleeve portions extending axially from one axial side of the circumferential extension, and two heat-fusion terminals located on both circumferential sides of the plurality of sleeve portions.

[0016] The plurality of power terminals extend axially through the plurality of sleeve portions.

[0017] In some embodiments, the circumferential extension is located inside the housing, and the plurality of sleeve portions and the two thermowelded terminals extend from inside the housing to outside the housing. The positions of the plurality of sleeve portions are fixed by fusing the two thermowelded terminals outside the housing.

[0018] In some embodiments, the ends of the plurality of power terminals on the other axial side are wrapped with resin to form a power terminal resin sealing portion, and there is an axial gap between the fixing portion and the power terminal resin sealing portion.

[0019] In some embodiments, the busbar retainer has a plurality of power terminals on one axial side and a plurality of sleeve portions respectively sleeved on the plurality of power terminals, the plurality of sleeve portions being integrally formed with the busbar retainer.

[0020] In some embodiments, the sleeve portion is stepped, and the axial height of the step of one sleeve portion is higher than the axial height of the steps of the other sleeve portions.

[0021] In some embodiments, the number of protrusions is two, and the axial height of the protrusions is the same as the axial height of the step of one of the sleeve portions.

[0022] According to another aspect of the embodiments of this application, an electrical product is provided, the electrical product having a motor as described in any of the foregoing embodiments.

[0023] One of the beneficial effects of this application embodiment is that, according to this application embodiment, by setting a protrusion on the busbar retainer to abut against the bottom of the housing, instead of the existing packing point, assembly errors can be reduced.

[0024] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents. Attached Figure Description

[0025] The accompanying drawings, which are included to provide a further understanding 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 to be understood that the drawings are solely for purposes of illustration and are not intended to limit the application. In the drawings:

[0026] Figure 1 is a schematic view of one example of a motor of an embodiment of the present application;

[0027] Figure 2 is a schematic view of a shaft cross section of the motor shown in Figure 1

[0028] Figure 3 is a schematic view of one example of a bus bar holder of a motor of an embodiment of the present application;

[0029] Figure 4 is a schematic view of one example of a bus bar holder shown in Figure 3

[0030] Figure 5 is a schematic view of one example of a bus bar holder shown in

[0031] Figure 6 is a schematic view of another example of a bus bar holder of a motor of an embodiment of the present application;

[0032] Figure 7 is a schematic view of another example of a bus bar holder shown in Figure 6

[0033] Figure 8 is a schematic view of one example of a bus bar holder shown in Figure 6 DETAILED DESCRIPTION

[0034] The foregoing and other features of the present application will become more apparent from the following description and accompanying drawings. In the description and drawings, like numbers in different drawings represent the same or similar elements. Described in detail are specific embodiments of the present application, which illustrate the principles of the present application, and in which the principles of the present application can be employed. It is understood that the present application is not limited to the embodiments described and illustrated, but rather, the present application includes all modifications, variations, and equivalents that fall within the scope of the appended claims.

[0035] ​​​​In the embodiments of the present application, the term "and / or" includes any one and all combinations of the associated listed terms. The terms "comprise", "include", "have" and the like mean the presence of the stated feature, element, component or assembly, but do not exclude the presence or addition of one or more other features, elements, components or assemblies.

[0036] In the embodiments of the present application, the singular forms "a", "an" and "the" can include the plural forms, should be broadly construed as "one" or "one type" rather than the meaning of "one", and in addition, the term "said" should be understood to include both the singular form and the plural form, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood as "at least partially according to", and the term "based on" should be understood as "at least partially based on", unless the context clearly indicates otherwise.

[0037] In addition, in the following description of the present application, for the convenience of explanation, the direction extending along the center axis O of the motor or the direction parallel thereto will be referred to as "axial direction"; the direction from the bottom of the motor housing to the opening of the motor housing will be referred to as "lower" or "lower side" or "axial lower side" or "axial other side"; the direction from the opening of the motor housing to the bottom of the motor housing will be referred to as "upper" or "upper side" or "axial upper side" or "axial one side"; the radial direction centered on the center axis O will be referred to as "radial direction"; the direction close to the center axis O will be referred to as "radial inner side"; the direction away from the center axis O will be referred to as "radial outer side"; and the direction around the center axis O will be referred to as "circumferential direction". It is to be noted, however, that these are for the convenience of explanation and do not limit the orientation of the motor in use and manufacture.

[0038] Embodiments of the present application will be described below with reference to the accompanying drawings.

[0039] Embodiments of the first aspect

[0040] The present application provides a motor.

[0041] Figure 6 is a schematic view of a motor which is one example of the motor of the embodiments of the present application, Figure 1 is Figure 2 is a schematic view of a motor which is one example of the motor of the embodiments of the present application, Figure 1 and Figure 1 The motor has a rotor 10, a stator 20, a bus bar holder 30, and a cylindrical housing 40. The rotor 10 is configured to be rotatable about a center axis O, the stator 20 is configured to be diametrically opposite to the rotor 10, the bus bar holder 30 is configured on the axial one side (the upper side as shown in Figure 2 is a schematic view of a motor which is one example of the motor of the embodiments of the present application, Figure 2The lower side shown has an opening 41, and the rotor 10, stator 20 and busbar retainer 30 are housed inside the housing 40.

[0042] The above description of the motor's structure is merely an example; the motor may also include conventional components, such as... Figure 2 For details regarding the cover portion 50 shown, please refer to relevant technical specifications.

[0043] In the embodiments of this application, such as Figure 2 As shown, the busbar retainer 30 has a protrusion 31 on its axial side (the side facing the bottom of the housing 40), which abuts against the bottom of the housing 40. Thus, by providing the protrusion 31 on the surface of the busbar retainer 30 facing the housing 40, and having the protrusion 31 abut against the housing 40, support for the housing 40 can be achieved. Furthermore, the protrusion 31 can replace conventional packing points, limiting axial movement between the stator core and the housing 40, and reducing assembly errors.

[0044] In some embodiments, the protrusion 31 and the busbar retainer 30 are integrally formed, thereby enabling the functionality of existing packing points to be achieved through a simple structure.

[0045] In some embodiments, the number of protrusions 31 is three or more. Thus, by supporting the bottom of the housing 40 with three or more protrusions 31, a balanced support effect can be achieved.

[0046] Figure 2 This is a schematic diagram of an example of a busbar retainer 30.

[0047] In some embodiments, the busbar holder 30 also has a plurality of power terminals 32 on one axial side. Figure 3 (Taking three power terminals 32 as an example) and fixing part 33 ( Figure 3 (Not shown in the image).

[0048] Figure 3 This is a schematic diagram of an example of the fixing part 33. (As shown) Figure 4 As shown, the fixing part 33 is integrally formed and has a circumferential extension 331, a plurality of sleeve portions 332 extending axially from one axial side of the circumferential extension 331, and two heat-fusion terminals 333 located on both circumferential sides of the plurality of sleeve portions 332. The plurality of power terminals 32 extend axially through the plurality of sleeve portions 332. Thus, by providing the fixing part 33, assembly is facilitated and tolerances can be controlled.

[0049] exist Figure 4 In this application, taking the cylindrical sleeve portion 332 as an example, the sleeve portion 332 is not limited in terms of its height (axial height) or shape. Furthermore, as... Figure 4As shown, the sleeve portions 332 have through holes that pass through the sleeve portions 332 in the axial direction, for the plurality of power supply terminals 32 to pass through, and the cross-sectional shape of the through holes depends on the cross-sectional shape of the power supply terminals 32.

[0050] In some embodiments, the circumferentially extending portion 331 is located inside the casing 40, the plurality of sleeve portions 332 and the two thermally fused terminals 333 extend from the inside of the casing 40 to the outside of the casing 40, and the positions of the plurality of sleeve portions 332 are fixed by fusing the two thermally fused terminals 333 on the outside of the casing 40. In this way, good sealing of the casing 40 can be achieved.

[0051] In some embodiments, as shown in Figure 4 the end portions of the plurality of power supply terminals 32 on the other side of the axial direction are wrapped with resin to form a power supply terminal resin sealing portion 321.

[0052] Figure 3 is a schematic view of the fixing portion 33 and the power supply terminal resin sealing portion 321. As shown in Figure 5 there is a gap G in the axial direction between the fixing portion 33 and the power supply terminal resin sealing portion 321. In this way, interference between the fixing portion 33 and the above-mentioned protrusion 31 supported on the bottom of the casing 40 can be avoided.

[0053] Figure 5 is a schematic view of another example of the busbar holder 30, Figure 6 is a top view of the busbar holder 30 as shown in Figure 7 is a schematic view of one of the power supply terminals 32 of the busbar holder 30 as shown in Figure 6 is a schematic view of another example of the busbar holder 30, Figure 8 is a schematic view of one of the power supply terminals 32 of the busbar holder 30 as shown in

[0054] In some embodiments, as shown in Figure 6 and Figure 6 the axial side of the busbar holder 30 also has a plurality of power supply terminals 32 and a plurality of sleeve portions 332' that respectively cover the plurality of power supply terminals 32, and the plurality of sleeve portions 332' are integrally formed with the busbar holder 30. In this way, sealing of the casing 40 can be achieved, and the power supply terminals 32 can be effectively supported to avoid movement of the power supply terminals 32.

[0055] In some embodiments, as shown in Figure 7 and Figure 6 the sleeve portions 332' are stepped, and the axial height of the step of one of the sleeve portions 332' is higher than the axial height of the steps of the other sleeve portions 332'. For example, Figure 7 and Figure 6The height of the step of the middle sleeve part 332' is higher than the height of the steps of the two sleeve parts 332' on both sides. Thus, the step of the middle sleeve part 332' can be used as the aforementioned protrusion 31, which is supported on the bottom of the casing 40 together with other protrusions 31, not only realizing the function of the conventional packing point, but also realizing the sealing effect.

[0056] In the above embodiment, as shown in Figure 7 and Figure 6 The number of protrusions 31 is 2, and the axial height of the protrusions 31 is the same as the axial height of the step of one of the sleeve parts 332' (for example, the step of the middle sleeve part 332'). Thus, the step around the power terminal 32 can be supported together with the two protrusions 31 to support the bottom of the casing 40, reducing assembly errors.

[0057] In some embodiments, as shown in Figure 7 The sleeve part 332' is further provided with a rib part 334 on both sides in the circumferential direction of the step of the sleeve part 332', which can effectively support the sleeve part 332' and increase the strength of the sleeve part 332'. The embodiment, shape and position of the rib part 334 are not limited in the present application.

[0058] It is worth noting that the above only exemplarily describes the structure of the motor related to the present application, but the present application is not limited thereto, and appropriate modifications can be made on the basis of the above various embodiments. In addition, the above only exemplarily describes each component, but the present application is not limited thereto, and the specific content of each component can also refer to related technologies; in addition, components not shown in Figure 8 may be added, or one or more components in Figures 1 to 8 Figures 1 to 8 may be reduced. For other structures of the motor, please refer to related technologies, which are omitted here.

[0059] According to the embodiment of the present application, by providing a protrusion on the bus bar holder to abut against the bottom of the casing, instead of the existing packing point, assembly errors can be reduced.

[0060] Embodiments of the second aspect

[0061] The embodiment of the present application provides an electrical product having the motor described in the embodiments of the first aspect. Since the structure of the motor has been described in detail in the embodiments of the first aspect, the content is incorporated herein, and the description is omitted here.

[0062] In the embodiments of the present application, the electrical product can be any electrical device provided with a motor, such as 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, etc. household appliance, or a pump, a conveyor, an elevator, a standard industrial general-purpose machine, a wind-driven generator, a grinding machine, a traction motor, etc. industrial equipment or various information processing equipment, and can also be various components of an automobile, such as an automobile electric power steering system, an automobile sunroof adjusting component, a seat adjusting component, a transmission, a brake device, etc.

[0063] The present application has been described above with reference to specific embodiments. As one skilled in the art will readily appreciate, the above description is meant as illustrative of the present application and not in a limiting sense. Various modifications and changes can be made to the present application by those skilled in the art without departing from the true spirit and scope of the present application, which is defined by the appended claims.

[0064] Preferred embodiments of the present application are described above with reference to the accompanying drawings. Many features and advantages of the embodiments are apparent from the detailed specification, and it is therefore intended by the appended claims to cover all such features and advantages of the embodiments within their true spirit and scope. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the present application to the exact construction and operation described herein. Accordingly, all suitable modifications and equivalents can be resorted to falling within the scope of the present application.

Claims

1. A motor having: a rotor configured to be rotatable about a central axis; a stator disposed at an outer periphery of the rotor, disposed in opposition to the rotor in a radial direction; a bus bar holder disposed at an axial side of the rotor and the stator; and a housing that is cylindrical, in which the rotor, the stator, and the bus bar holder are accommodated, characterized in that an axial side of the bus bar holder has a protrusion, a plurality of power supply terminals, and a fixing portion, the protrusion abuts against a bottom of the housing, the fixing portion is integrally formed, has a circumferential extension, a plurality of sleeve portions extending in an axial direction from an axial side of the circumferential extension, and two heat fusion terminals located at both circumferential sides of the plurality of sleeve portions, and the plurality of power supply terminals extend in the axial direction through the plurality of sleeve portions.

2. The motor according to claim 1, characterized in that the protrusion and the bus bar holder are integrally formed.

3. The motor according to claim 1 or 2, characterized in that the number of the protrusions is three or more, the circumferential extension is located inside the housing, the plurality of sleeve portions and the two heat fusion terminals protrude from inside the housing to outside the housing, and the positions of the plurality of sleeve portions are fixed by fusing the two heat fusion terminals outside the housing.

5. The motor according to claim 1, characterized in that end portions of the plurality of power supply terminals on an opposite axial side are covered with resin to form a power supply terminal resin sealing portion, and a gap is present in the axial direction between the fixing portion and the power supply terminal resin sealing portion.

6. An electric product having the motor according to any one of claims 1 to 5.

7. A motor having: a rotor configured to be rotatable about a central axis; a stator disposed at an outer periphery of the rotor, disposed in opposition to the rotor in a radial direction; a bus bar holder disposed at an axial side of the rotor and the stator; and a housing that is cylindrical, in which the rotor, the stator, and the bus bar holder are accommodated, characterized in that an axial side of the bus bar holder has a protrusion, a plurality of power supply terminals, and a plurality of sleeve portions respectively fitted to the plurality of power supply terminals, the protrusion abuts against a bottom of the housing, and the plurality of sleeve portions are integrally formed with the bus bar holder.

8. The motor according to claim 7, characterized in that the protrusion and the bus bar holder are integrally formed.

9. The motor according to claim 7 or 8, characterized in that the number of the protrusions is three or more.

10. The motor according to claim 7, characterized in that the sleeve portions are stepped, and an axial height of a step of one of the sleeve portions is higher than axial heights of steps of the other sleeve portions, the number of the protrusions is two, and an axial height of the protrusions is the same as the axial height of the step of the one of the sleeve portions.

11. An electric product having the motor according to any one of claims 7 to 10. ​ ​ ​ ​ ​ 4. The motor of claim 1, wherein ​ ​ ​ 6. An electrical product, characterised in that ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 11. The motor of claim 10, wherein, ​ 12. An electrical product, characterised in that ​

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