Motor and electrical product

Abstract

The utility model provides a motor and an electrical product. The motor comprises an electric brush assembly which comprises an electric brush and a first connecting part electrically connected with the electric brush; the circuit board assembly comprises a circuit board and a second connecting part electrically connected with the circuit board, and the first connecting part and the second connecting part are electrically connected in a detachable mode. The first connecting part of the electric brush assembly is detachably connected with the second connecting part of the circuit board assembly, so that debugging of the motor is facilitated. For example, debugging for discovering defective products through product detection is facilitated, or debugging for replacing quick-wear parts such as an electric brush is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of electromechanical technology, and in particular to a motor and electrical product. Background Technology

[0002] With the development of science and technology, the application fields of motors are becoming increasingly widespread. For example, motors are used in various electrical products, which can be devices, equipment or components that include motors, such as vehicle-mounted devices, home appliances, office automation equipment, industrial equipment, transportation equipment, or components in devices or equipment.

[0003] To ensure reliable motor operation, adjustments are necessary. This may include identifying defective motors through product inspection or replacing easily worn components such as the motor's brushes.

[0004] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this utility model and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this utility model. Utility Model Content

[0005] The inventors discovered that in existing brushed motors, the busbar connected to the brushes is directly soldered to the circuit board, making it difficult to disassemble the internal components. This increases the difficulty of motor debugging. For example, it makes it difficult to easily inspect the internal components or replace easily worn parts such as the brushes.

[0006] To address one or more of the aforementioned problems or other similar issues, this invention provides a motor and electrical product that facilitates motor debugging.

[0007] According to a first aspect of the present invention, a motor is provided, the motor comprising: a brush assembly including a brush and a first connecting portion electrically connected to the brush; and a circuit board assembly including a circuit board and a second connecting portion electrically connected to the circuit board, wherein the first connecting portion and the second connecting portion are detachably electrically connected.

[0008] In some embodiments, the first connection portion includes a first busbar, the second connection portion includes a second busbar, at least one of the first busbar and the second busbar has a notch formed at its end, and the first busbar and the second busbar are electrically connected by abutting through the notch.

[0009] In some embodiments, at least one of the first busbar and the second busbar has a chamfered end.

[0010] In some embodiments, the first connecting portion includes: a brush arm connected to the brush; and a support arm including a first end and a second end, the first end being connected to the brush arm and the second end being connected to the second connecting portion, wherein the thickness of the support arm is greater than the thickness of the brush arm.

[0011] In some embodiments, the motor further includes: a brush disk that houses the circuit board assembly, the brush disk including: a bottom having an insertion hole for the support arm to be inserted into the brush disk from an axial side of the bottom; and a wall portion disposed around the insertion hole and extending from the bottom toward an axial side.

[0012] In some embodiments, the wall portion includes a first wall portion located radially outward of the support arm, the first wall portion being located radially inward of the circumferential edge of the brush disk, the first wall portion having at least one opening in the circumferential direction.

[0013] In some embodiments, the inner wall of the insertion hole is formed with a radially extending protrusion.

[0014] In some embodiments, the support arm includes a beveled portion, a large-diameter portion, and a small-diameter portion sequentially disposed between the second end and the first end, wherein at least a portion of the small-diameter portion is accommodated within the insertion hole, the width of the large-diameter portion is greater than the width of the insertion hole, and the width of the small-diameter portion is smaller than the width of the insertion hole.

[0015] In some embodiments, a stepped portion is formed at the connection between the small diameter portion and the first end, and the width of the stepped portion is greater than the width of the large diameter portion.

[0016] According to a second aspect of the present invention, an electrical product is provided, the electrical product including the motor described in the first aspect of the present invention.

[0017] One of the beneficial effects of this embodiment of the invention is that by detachably connecting the first connecting part of the brush assembly to the second connecting part of the circuit board assembly, it is convenient to adjust the motor. For example, it facilitates the adjustment of defective products during product inspection, or the adjustment of replacing easily worn parts such as brushes.

[0018] The embodiments of this utility model are disclosed in detail with reference to the following description and accompanying drawings. It should be understood that the embodiments of this utility model are not limited in scope thereto. Within the spirit and scope of the appended claims, the embodiments of this utility model include many changes, modifications, and equivalents.

[0019] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0020] The above and other objects, features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This is a cross-sectional view of the motor according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the brush assembly and circuit board assembly according to an embodiment of the present utility model;

[0023] Figure 3 This is another schematic diagram of the brush assembly and circuit board assembly according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the first busbar and the second busbar abutting in an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of a brush disk according to an embodiment of the present invention;

[0026] Figure 6 This is another schematic diagram of the brush disk according to an embodiment of the present utility model;

[0027] Figure 7 This is a schematic diagram of a brush disk assembled with a brush assembly according to an embodiment of the present invention;

[0028] Figure 8 This is another schematic diagram of the brush disk according to an embodiment of the present utility model;

[0029] Figure 9 This is a schematic diagram of the support arm according to an embodiment of the present invention. Detailed Implementation

[0030] Referring to the accompanying drawings, the foregoing and other features of this utility model will become apparent from the following description. Specific embodiments of this utility model are specifically disclosed in the description and drawings, illustrating partial implementations in which the principles of this utility model can be employed. It should be understood that this utility model is not limited to the described embodiments; rather, it includes all modifications, variations, and equivalents falling within the scope of the appended claims.

[0031] In embodiments of this utility model, the term "and / or" includes any one and all combinations of one or more of the associated listed terms. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.

[0032] In this embodiment of the invention, the singular forms "a," "the," etc., may include the plural forms and should be broadly interpreted as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.

[0033] Furthermore, in the following description of this utility model, for ease of explanation, the direction parallel to the direction extending from the central axis CC' of the motor is referred to as "axial direction," the radial direction centered on the central axis is referred to as "radial direction," and the direction around the central axis is referred to as "circumferential direction." It is worth noting that the definitions of each direction in this specification are only for the convenience of explaining the embodiments of this utility model and do not limit the direction of the motor, etc., during use and manufacture.

[0034] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0035] First aspect of the embodiments

[0036] Figure 1 This is a cross-sectional view of the motor according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the brush assembly and circuit board assembly according to an embodiment of the present utility model; Figure 3 This is another schematic diagram of the brush assembly and circuit board assembly according to an embodiment of the present invention.

[0037] like Figure 1 , Figure 2 as well as Figure 3 As shown, the motor 100 includes a brush assembly 1 and a circuit board assembly 2.

[0038] The brush assembly 1 includes a brush 11 and a first connection portion 12 electrically connected to the brush 11; the circuit board assembly 2 includes a circuit board 21 and a second connection portion 22 electrically connected to the circuit board 21, wherein the first connection portion 12 and the second connection portion 22 are electrically connected in a detachable manner.

[0039] Therefore, by detachably connecting the first connecting portion 12 of the brush assembly 1 to the second connecting portion 22 of the circuit board assembly 2, it is convenient to adjust the motor 100. For example, it facilitates the adjustment of defective products during product inspection, or the adjustment of replacing easily worn parts such as the brush 11.

[0040] The above description only illustrates the structure of the motor related to this utility model. Those skilled in the art should understand that the motor 100 may also have a rotating shaft, stator, bearings, etc. For other components of the motor 100, please refer to relevant technologies, which are omitted here.

[0041] like Figure 3 As shown, the circuit board 21 extends in a generally disk-shaped radial direction centered on the central axis CC' of the motor 100. Alternatively, the circuit board may be of other shapes, which are not limited in this embodiment of the present invention.

[0042] like Figure 3 As shown, in the motor 100, two brush assemblies 1 are symmetrically arranged on both sides of the radial direction of the central axis CC'. Alternatively, other numbers of brush assemblies 1 may be provided depending on the actual situation, such as more or less than two. This embodiment of the present invention does not impose any limitations on this. Correspondingly, a first connecting portion 12 matching the number of brush assemblies 1 may be provided in the circuit board 21 of the motor 100.

[0043] In some embodiments, the first connecting portion 12 and the second connecting portion 22 can be detachably connected in various ways to achieve electrical connection, and correspondingly, the first connecting portion 12 and the second connecting portion 22 can adopt various connection methods.

[0044] For example, the first connecting part 12 and the second connecting part 22 can be a snap-fit ​​connection, with one or both of the opposite end faces of the first connecting part 12 and the second connecting part 22 having notches, and the two being snap-fit ​​connected via the notches; or, one of the end faces of the first connecting part 12 and the second connecting part 22 has a groove, and the other end face has a protrusion that matches the groove, and the two being snap-fit ​​connected via the protrusion and the groove, etc.

[0045] Furthermore, the first connecting part 12 and the second connecting part 22 can be plug-in connections, with the first connecting part 12 being a plug and the second connecting part 22 being a socket; the first connecting part 12 and the second connecting part 22 can be magnetic connections, with magnetic materials attracting each other at their opposite ends; the first connecting part 12 and the second connecting part 22 can be threaded connections, with matching external threads and internal threads respectively at their opposite ends; the first connecting part 12 and the second connecting part 22 can be spring-loaded connections, with elastic metal sheets and corresponding planes or protrusions at their opposite ends, achieving electrical connection through contact with the elastic metal sheets.

[0046] Taking the snap-fit ​​connection described above as an example, in some embodiments, the first connecting part 12 includes a first busbar 121, the second connecting part 22 includes a second busbar 221, and at least one of the first busbar 121 and the second busbar 221 has a notch 122 formed at its end, and the first busbar 121 and the second busbar 221 are electrically connected by abutting through the notch 122.

[0047] For example, such as Figure 1 and Figure 2 As shown, the end of the first busbar 121 is formed along the axial direction toward the other side ( Figure 1 The second busbar 221 is inserted axially into the notch 122 of the first busbar 121 on the C side, so that the first busbar 121 and the second busbar 221 abut in a cross shape.

[0048] Figure 4 This is a schematic diagram of the first busbar and the second busbar abutting in an embodiment of the present utility model.

[0049] like Figure 4 As shown, the first busbar 121 has a notch 122, and the second busbar 221 has a first surface 2211 and a second surface 2212. When the first busbar 121 and the second busbar 221 are in a cross-shaped abutment, at least a portion of the inner wall of the notch 122 of the first busbar 121 abuts against the first surface 2211 and the second surface 2212 of the second busbar 221, thereby achieving an electrical connection.

[0050] In this embodiment of the utility model, the above description is based on the example of a notch 122 formed at the end of the first busbar 121, which crosses and abuts against the second busbar 221. Alternatively, notches may be formed at the ends of both the first busbar 121 and the second busbar 221, or a notch may be formed only at the end of the second busbar 221.

[0051] Therefore, by forming a notch 122 at the end of at least one of the first busbar 121 and the second busbar 221, the first busbar 121 and the second busbar 221 can cross-abut each other to achieve electrical connection, which can ensure the reliability of electrical connection and simplify the assembly process.

[0052] In some embodiments, at least one of the first busbar 121 and the second busbar 221 has a chamfer 2213 formed at its end.

[0053] For example, such as Figure 4 As shown, the end of the second busbar 221 on one axial side has a chamfer 2213. This chamfer can also be provided at the end on the other axial side of the second busbar 221.

[0054] Therefore, by forming a chamfer 2213 at the end of at least one of the first busbar 121 and the second busbar 221, the first busbar 121 and the second busbar 221 can be more smoothly connected.

[0055] In some embodiments, the first connecting portion 12 includes a brush arm 123 and a support arm 124. The brush arm 123 is connected to the brush 11; the support arm 124 includes a first end 1241 and a second end 1242, the first end 1241 is connected to the brush arm 123, and the second end 1242 is connected to the second connecting portion 22, wherein the thickness of the support arm 124 is greater than the thickness of the brush arm 123.

[0056] For example, such as Figure 3 As shown, the first connecting portion 12 has a support arm 124 extending axially, and a brush arm 123 connected to the support arm 124 at a first end 1241 on one axial side. The brush arm 123 forms a corner in the first connecting portion 12, that is, the first connecting portion 12 is generally L-shaped by the combination of the support arm 124 and the brush arm 123. A brush 11 is connected to the brush arm 123, and at least a portion of the brush 11 is located radially inward of the brush arm 123.

[0057] The support arm 124 has a second end 1242 on the other side of the axial direction, which is connected to the second connecting portion 22 through a formed notch 122. The radial thickness of the support arm 124 is greater than the radial thickness of the brush arm 123.

[0058] In this embodiment, the support arm 124 and the brush arm 123 can be connected by stamping. The connection method between the support arm 124 and the brush arm 123 is not limited to this; other methods can also be used, such as riveting, welding, or snap-fitting.

[0059] Therefore, by making the thickness of the support arm 124 greater than the thickness of the brush arm 123, on the one hand, the support arm 124 can play a supporting role and prevent deformation under force; on the other hand, the brush arm 123 can be elastic, ensuring that the brush 11 connected to the brush arm 123 can reliably contact other components.

[0060] Figure 5 This is a schematic diagram of a brush disk according to an embodiment of the present invention.

[0061] In some embodiments, the motor 100 further includes a brush disk 3, which includes a bottom 31 and a wall 32.

[0062] The brush plate 3 houses the circuit board assembly 2. The bottom 31 of the brush plate 3 is provided with an insertion hole 311 for the support arm 124 to be inserted into the brush plate 3 from one axial side of the bottom 31. The wall portion 32 is provided around the insertion hole 311 and extends from the bottom 31 toward one axial side.

[0063] For example, such as Figure 1 As shown, the brush plate 3 is a cylindrical structure with an opening on one side. The brush plate 3 is housed in the housing 4 of the motor 100, and the circuit board assembly 2 is housed in the brush plate 3 and disposed on the opening side of the brush plate 3.

[0064] like Figure 5 As shown, the brush disk 3 has a bottom 31 and another side along the axial direction of the bottom 31. Figure 1 A sidewall 33 extending from the C side of the bottom 31 has an insertion hole 311 forming on the bottom 31, and a wall portion 32 surrounding the insertion hole 311 is provided on the lower surface of the bottom 31. The wall portion 32 extends from the lower surface of the bottom towards one axial side. Figure 1 (C' side) extends.

[0065] During the assembly of the motor 100, the support arm 124 of the first connecting part 12 is inserted into the insertion hole 311 of the brush disk 3 from one axial side, and the part of the support arm 124 connected to the brush arm 123 is surrounded by the wall part 32.

[0066] Therefore, by providing a wall portion 32 around the insertion hole 311, the strength around the insertion hole 311 can be increased. In addition, the wall portion 32 can limit the support arm 124, preventing the support arm 124 from undergoing large displacement. Thus, the stability of the brush 11 connected to it via the brush arm 123 can be guaranteed, and the reliability of the connection between the support arm 124 and the second connecting portion 22 can be guaranteed.

[0067] Figure 6 This is another schematic diagram of the brush disk according to an embodiment of the present utility model; Figure 7 This is a schematic diagram of a brush disk assembled with a brush assembly according to an embodiment of the present invention.

[0068] In some embodiments, the wall portion 32 includes a first wall portion 321 located radially outward of the support arm 124, the first wall portion 321 being located radially inward of the circumferential edge of the brush disk 3, and the first wall portion 321 having at least one opening 3211 in the circumferential direction.

[0069] For example, such as Figure 6 and Figure 7 As shown, the wall portion 32 includes a first wall portion 321 and a second wall portion 322. The first wall portion 321 is located between the radially outer side of the insertion hole 31 and the radially inner side of the circumferential edge of the brush disk 3. The second wall portion 322 is located on the radially inner side of the insertion hole 311, opposite to the first wall portion 321.

[0070] After the support arm 124 is inserted into the insertion hole 311, the first wall portion 321 is located radially outward of the support arm 124, while the second wall portion 322 is located radially inward of the support arm 124. The first wall portion 321 and the second wall portion 322 surround the connection portion between the support arm 123 and the brush arm 124.

[0071] like Figure 7 As shown, the brush arm 123 has a connecting portion 1231, a bending portion 1232, and a brush connecting portion 1233 in sequence along the circumferential direction. The connecting portion 1231 is connected to the first end 1241 on one side of the axial direction of the support arm 124. The bending portion 1232 bends radially inward and connects to the brush connecting portion 1233. A brush 11 is provided on the radially inward side of the brush connecting portion 1233 near the central axis.

[0072] The connection point between the first end 1241 of the support arm 124 and the connecting portion 1231 of the brush arm 123 is located between the first wall portion 321 and the second wall portion 322.

[0073] Therefore, by positioning the first wall portion 321 radially inside the circumferential edge of the brush disk 3, even if the first wall portion 321 deforms radially outward due to the force exerted by the support arm 124 when the support arm 124 is inserted into the insertion hole 311, the first wall portion 321 will not exceed the circumferential edge of the brush disk 3, thereby reducing the radial dimension of the motor 100. In addition, by positioning the first wall portion 321 radially inside the circumferential edge of the brush disk 3, the thickness of the first wall portion 321 will not be too thick, making it easier to insert the support arm 124.

[0074] In addition, such as Figure 6As shown, by forming at least one opening 3211 in the circumferential direction of the first wall portion 321, the first wall portion 321 can provide space for the support arm 124 through elastic deformation, facilitating insertion operations and preventing damage to the first wall portion 321. This embodiment of the invention is not limited to this; for example, the opening 3211 may not be formed on the first wall portion 321.

[0075] Figure 8 This is another schematic diagram of the brush disk according to an embodiment of the present utility model.

[0076] In some embodiments, the inner wall of the insertion hole 311 is formed with a radially extending protrusion 3111.

[0077] like Figure 6 and Figure 8 As shown, the inner wall of the radially outer side of the insertion hole 311 has two protrusions 3111 extending radially inward, and the inner wall of the radially inner side of the insertion hole 311 has one protrusion 3111 extending radially outward. The number of protrusions 3111 is not limited to two or one, and can be set according to the actual situation, and there is no limitation thereto.

[0078] Therefore, by fixing the support arm 124 radially through the protrusion 3111, the stability of the brush 11 connected to it via the brush arm 123 can be further guaranteed, and the reliability of the connection between the support arm 124 and the second connecting part 22 can be further guaranteed.

[0079] Figure 9 This is a schematic diagram of the support arm according to an embodiment of the present invention.

[0080] In some embodiments, the support arm 123 includes a beveled portion 1243, a large-diameter portion 1244, and a small-diameter portion 1245 sequentially disposed between the second end 1242 and the first end 1241, wherein at least a portion of the small-diameter portion 1245 is accommodated within the insertion hole 311, the width of the large-diameter portion 1244 is larger than the width of the insertion hole 311 at the bottom 31 of the brush disk 3, and the width of the small-diameter portion 1245 is smaller than the width of the insertion hole 311.

[0081] like Figure 9 As shown, below the notch 122 of the second end 1242 is a trapezoidal inclined portion 1243, and below the inclined portion 1243 is a large diameter portion 1244. The width of the large diameter portion 1244 is the same as the width of the bottom edge of the inclined portion 1243, which is L. The width S of the small diameter portion 1245 below the large diameter portion 1244 is smaller than the width L of the large diameter portion 1244.

[0082] like Figure 8 and Figure 9As shown, the width of the insertion hole 311 at the bottom 31 of the brush disk 3 is W, and this width W is greater than the width S of the small-diameter portion 1245 and less than the width L of the large-diameter portion 1244, that is, S < W < L. Among them, the width L of the large-diameter portion 1244 is slightly larger than the width W of the insertion hole 311. For example, the difference between the width L of the large-diameter portion 1244 and the width W of the insertion hole 311 is less than or equal to the deformation amount of the insertion hole 311 when the large-diameter portion 1244 is located in the insertion hole 311. Thus, the large-diameter portion 1244 can pass through this insertion hole 311.

[0083] During the process of installing the support wall 123 on the brush disk 3 through the insertion hole 311 from the axial side, the large-diameter portion 1244 is passed through the insertion hole 311 whose width is slightly smaller than the width of the large-diameter portion 1244 through the guidance of the inclined surface portion 1243, and at least a part of the small-diameter portion 1245 is accommodated in this insertion hole 311.

[0084] Thus, by providing the inclined surface portion 1243, the large-diameter portion 1244 can be guided to be inserted into the insertion hole 311; by making the width of the large-diameter portion 1244 larger than the width of the insertion hole 311, it is possible to prevent the support arm 124 from falling off the brush disk 3 during the assembly operation.

[0085] In some embodiments, a step portion 1246 is formed at the connection between the small-diameter portion 1245 and the first end 1241, and the width of this step portion 1246 is larger than the width of the large-diameter portion 1244.

[0086] As Figure 9 shown, a step portion 1246 with a width of T is formed at the connection between the lower side of the small-diameter portion 1245 and the first end 1241, and the width T of the step portion 1246 is greater than the width L of the large-diameter portion 1244.

[0087] During the process of installing the support wall 123 on the brush disk 3 through the insertion hole 311 from the axial side, the large-diameter portion 1244 is passed through the insertion hole 311 whose width is slightly smaller than the width of the large-diameter portion 1244 through the guidance of the inclined surface portion 1243, and at the same time, the step portion 1246 with a width greater than the large-diameter portion 1244 is engaged with the axial side of the insertion hole 311, so that the support arm 123 can be stably inserted into the insertion hole 311, and will not be pulled out from the other axial side or fall off from the axial side.

[0088] Therefore, by forming a stepped portion 1246 at the connection between the small diameter portion 1245 and the first end 1241, and making the width of the stepped portion 1246 larger than the width of the large diameter portion 1244, on the one hand, it can prevent the support arm 124 from driving the brush 11 toward the bottom 31 of the brush disk 3 (i.e., toward the other side of the axial direction) during the disassembly operation, thus avoiding damage to the brush assembly 1. On the other hand, when the contact area with the bottom surface of the circuit board 21 is increased, the pressure on the circuit board 21 is reduced and it is less likely to be damaged when subjected to force.

[0089] According to the above embodiments, by detachably connecting the first connecting portion 12 of the brush assembly 1 to the second connecting portion 22 of the circuit board assembly 2, it is convenient to adjust the motor 100. For example, it facilitates the adjustment of defective products during product inspection, or facilitates the adjustment of replacing easily worn parts such as the brush 11.

[0090] Second aspect of the embodiments

[0091] This utility model provides an electrical product, which includes the motor 100 described in the first aspect embodiment. Since the structure of the motor 100 has been described in the first aspect embodiment, the content is incorporated herein and will not be repeated here.

[0092] By detachably connecting the first connection portion of the brush assembly to the second connection portion of the circuit board assembly, it is convenient to adjust the motor. For example, it facilitates the adjustment of defective products during product inspection, or the adjustment of replacing easily worn parts such as brushes.

[0093] In this embodiment, the electrical product can be any electrical product that uses a drive component, such as a device or component containing a motor, such as an in-vehicle device (e.g., a sunroof, canopy, etc.), home appliance, office automation equipment, industrial equipment, transportation equipment, or a component of such equipment. This invention is not limited to these products.

[0094] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the present invention. Those skilled in the art can make various modifications and variations to the present invention based on its spirit and principles, and these modifications and variations are also within the scope of the present invention.

Claims

1. A motor, characterized in that, The motor includes: A brush assembly includes a brush and a first connection portion electrically connected to the brush; and A circuit board assembly, comprising a circuit board and a second connection portion electrically connected to the circuit board. The first connecting part and the second connecting part are electrically connected in a detachable manner.

2. The motor according to claim 1, characterized in that, The first connecting portion includes a first busbar, and the second connecting portion includes a second busbar. At least one of the first busbar and the second busbar has a notch formed at its end, and the first busbar and the second busbar are electrically connected by abutting through the notch.

3. The motor according to claim 2, characterized in that, At least one of the first busbar and the second busbar has a chamfered end.

4. The motor according to claim 1, characterized in that, The first connecting part includes: Brush arm, which is connected to the brush; and A support arm includes a first end and a second end, the first end being connected to the brush arm and the second end being connected to the second connecting portion, wherein the thickness of the support arm is greater than the thickness of the brush arm.

5. The motor according to claim 4, characterized in that, The motor also includes: A brush disk housing the circuit board assembly, the brush disk comprising: The bottom has an insertion hole for the support arm to be inserted into the brush disk from one axial side of the bottom; and A wall portion, which is disposed around the insertion hole, extends from the bottom toward one axial side.

6. The motor according to claim 5, characterized in that, The wall portion includes a first wall portion located radially outward of the support arm, the first wall portion being located radially inward of the circumferential edge of the brush disk, and the first wall portion having at least one opening in the circumferential direction.

7. The motor according to claim 5, characterized in that, The inner wall of the insertion hole has a radially extending protrusion.

8. The motor according to claim 5, characterized in that, The support arm includes a beveled portion, a large-diameter portion, and a small-diameter portion sequentially disposed between the second end and the first end, wherein at least a portion of the small-diameter portion is accommodated within the insertion hole, the width of the large-diameter portion is greater than the width of the insertion hole, and the width of the small-diameter portion is smaller than the width of the insertion hole.

9. The motor according to claim 8, characterized in that, A stepped portion is formed at the connection between the small diameter portion and the first end, and the width of the stepped portion is greater than the width of the large diameter portion.

10. An electrical product, characterized in that, The electrical product includes the motor as described in any one of claims 1 to 9.

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