Driving assembly and electrical product

Abstract

The utility model provides a driving assembly and an electrical product. The at least two first convex parts are arranged in the direction perpendicular to the direction of the connecting line of the connecting parts, so that in the assembling process of the gear box and the motor body, a gap generated between the gear box and the motor body due to uneven stress in the second direction when the gear box and the motor body abut against each other is reduced, reliable abutting connection of the gear box and the motor body is achieved, and the reliability of the gear box and the motor body is improved. And the operation stability of the driving assembly is improved.

Description

Technical Field

[0001] The utility model relates to the field of electromechanical technology, in particular to a drive component and an electrical product. Background Art

[0002] With the advancement of science and technology, motors are increasingly being used in a wide range of applications, including in numerous electrical products. These products can include motor-containing devices or components, such as automotive devices, home appliances, office automation equipment, industrial equipment, and transportation equipment, or components within these devices.

[0003] In some motor applications, the motor body and gearbox are assembled to form a drive assembly. For example, in a vehicle sunroof, the drive assembly described above is used to drive the sunroof. Furthermore, during assembly of the drive assembly, the gearbox is axially fixed to the motor body via riveting.

[0004] It should be noted that the above technical background is merely for the purpose of providing a clear and complete description of the technical solutions of the present invention and to facilitate understanding by those skilled in the art. It should not be assumed that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present invention. Utility Model Content

[0005] The inventor discovered that during the assembly process of the existing drive assembly, temporary fixation is performed at one end of the gear box and one end of the motor body, and the gear box is fixed to the motor body through two riveted structures. As a result, in the direction perpendicular to the line connecting the two riveted structures, since there is no fixed point, uneven force may be applied in this direction, resulting in a gap between the axial abutting surfaces of the motor body and the gear box, making it impossible for the motor body and the gear box to abut reliably, resulting in reduced operational stability and reliability of the assembled drive assembly.

[0006] To solve one or more of the above problems or other similar problems, embodiments of the present invention provide a drive assembly and an electrical product that can achieve reliable contact between the gearbox and the motor body in the drive assembly, thereby improving the stability and reliability of the drive assembly.

[0007] According to a first aspect of an embodiment of the utility model, a drive assembly is provided, which includes a motor body and a gearbox: the motor body has a casing and an output shaft, the gearbox has at least two connecting parts on a side abutting the casing, the gearbox is fixedly connected to the motor body through the connecting parts, the gearbox has an abutting surface abutting the casing, the abutting surface has an opening, and the output shaft is inserted into the gearbox through the opening, wherein the abutting surface of the gearbox has at least two first protrusions protruding toward the casing, and, in the plane where the abutting surface is located, a direction parallel to the line connecting the two connecting parts is set as a first direction, and the at least two first protrusions are arranged along a second direction perpendicular to the first direction.

[0008] In some embodiments, within the plane where the abutting surface is located, with the center point of the opening of the abutting surface as the origin, an angle between a line connecting the first protrusion and the origin and the second direction is less than or equal to a preset angle.

[0009] In some embodiments, the preset angle is 45 degrees.

[0010] In some embodiments, the at least two first protrusions include two first protrusions arranged on an extension line extending along the second direction and passing through the origin.

[0011] In some embodiments, the at least two first protrusions include at least two pairs of first protrusions, the at least two pairs of first protrusions are respectively located on both sides of the first extension line, and each pair of first protrusions is symmetrically arranged relative to the second extension line, or,

[0012] The at least two first convex portions include one first convex portion and two first convex portions respectively arranged on both sides of the first extension line, the one first convex portion is arranged on the second extension line, and the two first convex portions are symmetrically arranged with respect to the second extension line.

[0013] The first extension line extends along the first direction and passes through the origin, and the second extension line extends along the second direction and passes through the origin.

[0014] In some embodiments, the number of the first protrusions is greater than or equal to three.

[0015] In some embodiments, the abutting surface of the gear box further has at least one second protrusion protruding toward the housing, and an angle between a line connecting the second protrusion and the origin and the second direction is greater than the preset angle.

[0016] In some embodiments, the motor body further has an electrical connector, which is disposed on the outside of the housing and in the second direction.

[0017] In some embodiments, the motor body further has a grounding component, which is arranged in the second direction and abuts against the housing.

[0018] In some embodiments, the height of the first protrusion is 0.45 mm to 0.55 mm.

[0019] According to a second aspect of the embodiment of the present utility model, an electrical product is provided. The electrical product includes the drive assembly described in the first aspect of the embodiment of the present utility model.

[0020] One of the beneficial effects of the embodiment of the present invention is that by arranging at least two first protrusions along a direction perpendicular to the connecting line direction of the connecting portion, during the assembly process of the gear box and the motor body, the gap between the gear box and the motor body when the two are in abutment due to uneven force in the second direction is reduced, thereby achieving reliable abutment between the gear box and the motor body in the drive assembly, and improving the stability and reliability of the operation of the drive assembly.

[0021] The embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings. It should be understood that the scope of the embodiments of the present invention is not limited thereby. The embodiments of the present invention include many variations, modifications, and equivalents within the spirit and scope of the appended claims.

[0022] Features described and / or illustrated with respect to 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.

[0023] It should be emphasized that the terms “include / comprising / having” when used herein refer to the presence of a feature, an integer, or a component, but do not preclude the presence or addition of one or more other features, integers, or components. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above and other objects, features and advantages of the embodiments of the present invention will become more apparent from the following detailed description in conjunction with the accompanying drawings, in which:

[0025] Figure 1 This is a front view of the drive assembly of the embodiment of the utility model;

[0026] Figure 2 This is a top view of the drive assembly of an embodiment of the present utility model;

[0027] Figure 3 is a cross-sectional view of a drive assembly according to an embodiment of the present utility model;

[0028] Figure 4This is a schematic diagram of a gearbox according to an embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the grounding component abutting against the housing according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0030] The above and other features of the present invention will become apparent from the following description with reference to the accompanying drawings. In the description and the accompanying drawings, specific embodiments of the present invention are disclosed in detail, which illustrate some embodiments in which the principles of the present invention can be adopted. It should be understood that the present invention is not limited to the described embodiments, but rather includes all modifications, variations and equivalents that fall within the scope of the appended claims.

[0031] In the embodiments of the present invention, the term "and / or" includes any and all combinations of one or more of the associated listed terms. The terms "include," "comprise," "have," etc. refer to the presence of the stated features, elements, components, or components, but do not exclude the presence or addition of one or more other features, elements, components, or components.

[0032] In the embodiments of the present invention, the singular forms "a", "the", etc. may include plural forms and should be broadly understood to mean "a" or "a type" rather than being limited to "one". In addition, the term "said" should be understood to include both singular and plural forms, unless the context clearly indicates otherwise. In addition, the term "according to" should be understood to mean "at least in part based on...", and the term "based on" should be understood to mean "at least in part based on...", unless the context clearly indicates otherwise.

[0033] In the following description of the present invention, for convenience, the direction extending along or parallel to the motor's output shaft CC' is referred to as the "axial direction," the radial direction centered on the output shaft is referred to as the "radial direction," and the direction around the central axis is referred to as the "circumferential direction." It is important to note that the definitions of various directions in the present invention are intended solely for the convenience of illustrating the embodiments of the present invention and do not limit the orientation of the drive assembly, motor, electrical product, etc. during use or manufacture.

[0034] The following describes the implementation of the present invention with reference to the accompanying drawings.

[0035] Embodiments of the first aspect

[0036] Figure 1 This is a front view of the drive assembly of the embodiment of the utility model; Figure 2 This is a top view of the drive assembly of an embodiment of the present utility model; Figure 3 is a cross-sectional view of a drive assembly according to an embodiment of the present utility model; Figure 4 Schematic diagram of a gearbox according to an embodiment of the present invention.

[0037] like Figure 1 、 Figure 2 as well as Figure 3 As shown, the driving assembly 100 includes a motor body 1 and a gear box 2 .

[0038] The motor body 1 includes a housing 11 and an output shaft 12. The gear box 2 has at least two connecting portions 21 on the side that abuts the housing 11. The gear box 2 is fixedly connected to the motor body 1 via the connecting portions 21. In this embodiment, two connecting portions 21 are provided as an example for description, but the present invention is not limited thereto, and more connecting portions may be provided.

[0039] like Figure 3 and Figure 4 As shown, the gear box 2 has an abutting surface 22 abutting against the housing 11 . The abutting surface 22 has an opening 23 , and the output shaft 12 is inserted into the gear box 2 through the opening 23 .

[0040] The abutting surface 22 of the gear box 2 has at least two first protrusions 221 protruding toward the housing 11, and in the plane where the abutting surface 22 is located, a direction parallel to the connecting line direction of the two connecting parts 21 is set as a first direction (such as Figure 4 As shown), the at least two first protrusions 221 are arranged along a second direction perpendicular to the first direction (as shown Figure 4 (as shown) settings.

[0041] In the embodiment of the present invention, at least two first protrusions are arranged along a second direction perpendicular to the first direction, which means that the first protrusions are arranged near the second direction, for example, the angle between the first protrusions and the second direction is within a preset angle.

[0042] For example, Figure 1 As shown, the gear box 2 and the housing 11 of the motor body 1 are fixedly connected by riveting through the connecting portion 21, that is, the connecting portion 21 is a riveted structure;

[0043] Figure 1 The figure shows the connection part 21 on the front of the motor body 1, and another connection part 21 is provided on the back of the motor body at a position opposite to the connection part 21. Figure 1 and Figure 2 As shown, the connection portion 21 includes two connection portions 21 - 1 and 21 - 2 .

[0044] like Figure 2 As shown, the gear box 2 has a connecting portion 21-1 and a connecting portion 21-2 ( Figure 2As shown in the ellipse in the figure), the connecting portion 21-1 and the connecting portion 21-2 are riveted structures.

[0045] In this embodiment, the gearbox 2 is fixedly connected to the motor body 1 by riveting, that is, the connecting portion 21 is a portion or part of the gearbox 2 or the motor body 1, such as a riveted structure. However, the gearbox 2 and the motor body 1 can also be fixedly connected by fixing components such as bolts, that is, the connecting portion 21 is a dedicated connecting component; this embodiment of the utility model is not limited to this. In addition, more than two connecting portions 21 can be provided according to actual circumstances, and this embodiment of the utility model is not limited to this.

[0046] like Figure 4 As shown, the gearbox 2 is formed with a circular opening 23 on the side connected to the housing 11 of the motor body 1. When the gearbox 2 is assembled with the motor body 1, the output shaft 11 of the motor body 1 is inserted into the opening 23 of the gearbox 2. The opening 23 is formed with an abutting surface 22 that abuts against the housing 11 of the motor body 1 in the circumferential direction. The abutting surface 22 is annular. The abutting surface 22 has first protrusions 221-1, 221-2, 221-3, and 221-4 protruding toward the housing 11. For example, the first protrusion 221 is a cylindrical protrusion, and the upper surface facing the housing 11 is circular. The shape of the first protrusion 221 can also be square, diamond, or elliptical, and can be set according to actual conditions. The embodiment of the utility model is not limited to this.

[0047] like Figure 2 and Figure 4 As shown, in the plane where the abutting surface 22 is located, the direction of the line connecting the centers of the connecting part 21-1 and the connecting part 21-2 is set as the first direction, the direction perpendicular to the first direction is set as the second direction, and the first protrusions 221-1, 221-2, 221-3, and 221-4 are arranged along the second direction.

[0048] Therefore, by arranging at least two first protrusions 221 along a direction perpendicular to the connecting line direction of the connecting portion 21, during the assembly process of the gear box 2 and the motor body 1, the gap between the gear box 2 and the motor body 1 caused by the uneven force in the second direction when the two are in contact is reduced, thereby achieving reliable contact between the gear box 2 and the motor body 1 and improving the stability of the operation of the drive assembly 100.

[0049] In some embodiments, within the plane where the abutting surface 22 is located, with the center point of the opening 23 of the abutting surface 22 as the origin, the angle between the line connecting the first protrusion 221 and the origin and the second direction is less than or equal to the preset angle. The angle between the line connecting the first protrusion 221 and the origin and the second direction is an acute angle, that is, Figure 4 The second direction is a smaller angle between the angles between the leftward and rightward directions.

[0050] The preset angle can be set according to actual needs. Providing the first protrusion 221 within the preset angle can increase the stability of the abutment between the gear box 2 and the motor body 1 in the second direction.

[0051] For example, the preset angle is 45 degrees. Setting the preset angle to 45 degrees means that the first protrusion 221 is set within a range of 45 degrees above and below the second direction, and this range is the maximum threshold range in which the first protrusion 221 can be set. The preset angle can also be 40 degrees, 30 degrees, etc., as long as it is within the range of 45 degrees. The embodiment of the utility model does not limit this.

[0052] like Figure 4 As shown, for example, in the plane where the abutting surface 22 is located, the center point of the opening 23 is the origin ( Figure 3 The origin is also the intersection of the first direction and the second direction on the plane where the abutting surface 22 is located.

[0053] In some embodiments, the at least two first protrusions 221 include two first protrusions 221 disposed on an extension line extending along the second direction and passing through the origin.

[0054] In addition, the two first protrusions 221 are symmetrical with respect to the center point (origin) of the opening 23 .

[0055] like Figure 3 and Figure 4 As described above, the first convex portion 221-1 and the first convex portion 221-2 are arranged on an extension line extending along the second direction and passing through the origin. In other words, the first convex portion 221-1 and the other first convex portion 221-2 are arranged symmetrically with respect to the origin on an extension line of the second direction perpendicular to the first direction. In other words, the angle between the line connecting the first convex portion 221-1 and the first convex portion 221-2 and the origin and the second direction is 0 degrees, which is within a range of 45 degrees.

[0056] For example, after the gear box 2 and the motor body 1 are riveted and fixed, two opposite fixed connection positions are formed on the abutment surface 22, which is equivalent to setting connection parts 21-1 and 21-2 on the upper and lower sides of the annular contact surface 22, and setting first protrusions 221-1 and 221-2 on the left and right sides respectively. The connection parts 21-1 and 21-2 and the first protrusions 221-1 and 221-2 on the annular contact surface 22 are set at four points evenly divided on the circumference of the contact surface 22.

[0057] Thus, by providing the first protrusions 221 on the left and right sides of the opening 23 of the abutting surface 22 , respectively, the reliability of the abutment between the gear box and the motor body can be further improved.

[0058] like Figure 4As shown, for example, in the plane where the abutting surface 22 is located, the center point of the opening 23 is the origin ( Figure 4 The origin is also the intersection of the first direction and the second direction on the plane of the abutting surface 22. The angle between the line connecting the first convex portion 221-3 and the origin O and the second direction is α, for example, α = 20 degrees, and the angle between the first convex portion 221-3 and the origin O is also within the range of 45 degrees.

[0059] For another example, the angle between the line connecting the first convex portion 221 - 4 and the origin O and the second direction is also 20 degrees (the angle is not shown), and the angle between the first convex portion 221 - 4 and the origin O is also within the range of 45 degrees.

[0060] Therefore, by arranging the first protrusion 221 to have an angle with the second direction within a preset angle range, it is possible to further avoid uneven force generated when assembling the gear box 2 and the motor body 1 .

[0061] In some embodiments, the motor body 1 further has an electrical connector 13 . The electrical connector 13 is disposed radially outside the housing 11 and in the second direction.

[0062] like Figure 1 and Figure 3 As shown, an electrical connector 13 is provided on the radially outer side of the housing 11 of the motor body 1 , close to the gear box. The electrical connector 13 is arranged in a second direction perpendicular to the first direction of the line connecting the two connecting portions 21 .

[0063] Therefore, by arranging the electrical connector 13 in the second direction radially outside the housing 11 of the motor body 1, the gear box 2 can be reliably abutted against the motor body 1 while increasing the reliability of the electrical connector 13 abutting against the gear box 2 in the axial direction, thereby improving the stability of the electrical connection of the electrical connector 13 when it is working.

[0064] Figure 5 This is a schematic diagram of the grounding component and the housing abutting against each other in an embodiment of the present utility model.

[0065] In some embodiments, the motor body 1 further comprises a grounding component 14, which is arranged in the second direction and abuts against the housing 11. Figure 5 As shown, the grounding member 14 is in contact with the housing 11 .

[0066] Thus, by arranging the grounding member 14 in the second direction, it is possible to ensure that the grounding member 14 is in reliable contact with the housing 11 of the motor body 1 .

[0067] In some embodiments, the at least two first protrusions 221 include at least two pairs of first protrusions 221, the at least two pairs of first protrusions 221 are respectively located on both sides of the first extension line, and each pair of first protrusions 221 is symmetrically arranged relative to the second extension line, or,

[0068] The at least two first protrusions 221 include one first protrusion 221 and two first protrusions 221 respectively arranged on both sides of the first extension line, the one first protrusion 221 is arranged on the second extension line, and the two first protrusions 221 are symmetrically arranged relative to the second extension line.

[0069] The first extension line extends along the first direction and passes through the origin, and the second extension line extends along the second direction and passes through the origin.

[0070] For example, two pairs of first protrusions 221 are provided on the abutting surface 22 of the gearbox 2, and the two pairs of first protrusions 221 are respectively provided on the left and right sides of the first extension line, wherein each pair of first protrusions 221 is symmetrically arranged with respect to the second extension line. Alternatively, three pairs of first protrusions 221 may be provided, with one pair of first protrusions 221 on one side of the first extension line and the other two pairs of first protrusions 221 on the other side of the first extension line.

[0071] In addition, the number of pairs of the first protrusions 221 can be determined according to actual conditions, and the embodiment of the present invention does not limit this.

[0072] For another example, a first protrusion 221 is provided on one side of the first extension line (for example, the left side), and two first protrusions 221 symmetrically relative to the second extension line are provided on the other side of the first extension line (for example, the right side), one on the upper side of the second extension line and the other on the lower side of the second extension line.

[0073] In addition, the number of the first protrusions 221 on both sides of the first extension line can be set according to actual conditions, and the embodiment of the present utility model does not limit this.

[0074] In this way, the supporting force of the abutment between the gear box 2 and the motor body 1 can be increased, the gap caused by the uneven force in the second direction can be further reduced, and the stability of the abutment can be improved.

[0075] In some embodiments, the number of the first protrusions 221 can be determined according to actual needs, for example, the number of the first protrusions 221 is greater than or equal to 3. This embodiment of the present invention is not limited to this.

[0076] For example, Figure 4As shown, four first convex portions 221-1, 221-2, 221-3 and 221-4 are provided on the abutting surface 22 of the gear box 2, wherein three first convex portions 221-1, 221-3 and 221-4 are provided on the same side (the left side of the first direction, i.e., the left side of the first extension line), one first convex portion 221-2 is provided on the other side (the right side of the first direction), the first convex portion 221-1 is on the extension line of the first direction, and the first convex portions 221-3 and 221-4 are provided on both sides of the first convex portion 221 respectively. , the first angle between the line connecting the first protrusion 221-3 and the origin O on the upper side of the second direction and the second direction is 20 degrees, and the second angle between the line connecting the first protrusion 221-3 and the origin O on the lower side of the second direction and the second direction is also 20 degrees. The preset angle here sets both the first angle and the second angle to 20 degrees. The preset angles can also be set to 40 degrees, 30 degrees, etc., or the preset angle of the first angle can be set to a different angle from the preset angle of the second angle. The embodiment of the utility model does not limit this.

[0077] In some embodiments, the distribution of the plurality of first protrusions 221 can be adjusted according to actual needs.

[0078] For example, you can Figure 4 The first protrusion 221-1 on the left side of the first direction is retained, and the first protrusions 221-3 and 221-4 are arranged on one side of the first protrusion 221-2 on the right side of the first direction (this distribution is not shown in the figure), that is, one first protrusion 221 is arranged on the left side of the first direction, and three first protrusions 221 are arranged on the right side of the first direction.

[0079] For another example, the first protrusion 221-1 and the first protrusion 221-3 are retained on the left side of the first direction, and the first protrusion 221-4 is set on the same side as the first protrusion 221-2 (this distribution is not shown in the figure), that is, two first protrusions 221 are set on the left side of the first direction, and two first protrusions 221 are set on the right side of the first direction.

[0080] In addition, there may be three first convex portions 221, with one first convex portion 221 being provided on the left side of the first direction and two first convex portions 221 being provided on the right side of the first direction. For example, the first convex portion 221-1 is provided on the left side of the first direction, the first convex portion 221-2 and the first convex portion 221-3 are provided on the right side of the first direction (this distribution is not shown in the figure), the angle between the line connecting the first convex portion 221-2 and the origin O and the second direction is 0 degrees, and the angle between the line connecting the first convex portion 221-3 and the origin O and the second direction is within 45 degrees, for example, within a 45-degree angle range above the second direction, or within a 45-degree angle range below the second direction. This embodiment of the utility model is not limited thereto.

[0081] Therefore, by setting the number of the first protrusions 221 to 3 or more, the three first protrusions 221 form a plane, thereby increasing the supporting force of the abutment between the gear box 2 and the motor body 1 and improving the stability of the abutment.

[0082] In some embodiments, the abutting surface 22 of the gear box 2 further has at least one second protrusion 222 protruding toward the housing 11 , and an angle between a line connecting the second protrusion 222 and the origin O and the second direction is greater than the preset angle.

[0083] For example, the angle β between the line connecting the second protrusion 222 and the origin O and the second direction is greater than 45 degrees.

[0084] like Figure 4 As shown, the angle between the line connecting the second convex portion 222 and the origin O and the second direction is 60 degrees. This embodiment of the present invention is not limited to this.

[0085] In addition, the number of the second protrusions can be set according to actual needs, for example Figure 4 Two are provided, and are symmetrically arranged with respect to the second direction.

[0086] Therefore, by providing at least one second protrusion 222 with a larger angle, the second protrusion 22 and at least two first protrusions 221 form a plane, thereby increasing the supporting force of the abutment between the gear box 2 and the motor body 1 and improving the stability of the abutment.

[0087] In some embodiments, the height of the second protrusion 222 may be the same as or different from the height of the first protrusion 221 .

[0088] Thus, when the heights are the same, a support surface can be formed; when the heights are different, effective support can still be provided even when the side flatness of the motor body is poor.

[0089] In some embodiments, the height of the first protrusion 221 is 0.45 mm to 0.55 mm.

[0090] Thus, by setting the height of the first protrusion 221 within a specific range, it is possible to improve the contact reliability between the gear box 2 and the motor body 1 while avoiding interference between the gear box 2 and the motor body 1 .

[0091] In some embodiments, among the plurality of first protrusions 221 arranged in the second direction, the heights of the plurality of first protrusions 221 may be the same or different.

[0092] For example, Figure 4As shown, the first protrusion 221 - 3 serves as an auxiliary protrusion, and its height is lower than the first protrusion 221 - 1 . When the abutting surface 22 is uneven, the reliability of the abutment can be further improved by providing an auxiliary protrusion with a lower height.

[0093] Thus, by providing the first protrusions 221 with different heights, multiple abutment support points are added in the abutment direction, thereby further improving the reliability of the abutment.

[0094] According to the above embodiment, by providing at least two first protrusions 221 along a direction perpendicular to the connecting line direction of the connecting portion 21, during the assembly process of the gear box 2 and the motor body 1, the gap between the gear box 2 and the motor body 1 caused by the uneven force in the second direction when the two are in abutment is reduced, thereby enabling reliable abutment between the gear box 2 and the motor body 1 in the drive assembly 100, thereby improving the stability and reliability of the operation of the drive assembly 100.

[0095] Embodiments of the second aspect

[0096] An embodiment of the present utility model provides an electrical product, which includes the drive component 100 described in the embodiment of the first aspect. Since the structure of the drive component 100 has been described in the embodiment of the first aspect, its content is incorporated here and will not be repeated here.

[0097] By arranging at least two first protrusions along a direction perpendicular to the connecting line direction of the connecting portion, during the assembly process of the gear box and the motor body, the gap between the gear box and the motor body caused by uneven force in the second direction when the two are in abutment is reduced, thereby enabling reliable abutment between the gear box and the motor body in the drive assembly 100, thereby improving the stability and reliability of the operation of the drive assembly.

[0098] In this embodiment, the electrical product can be any electrical product that uses a drive assembly, for example, a device or component that includes a motor, such as an in-vehicle device, a home appliance, an office automation device, an industrial device, a transportation device, or a component thereof, such as a vehicle sunroof. The present invention is not limited to these products.

[0099] The present invention has been described above with reference to specific embodiments. However, those skilled in the art should understand that these descriptions are merely illustrative and are not intended to limit the scope of protection of the present invention. Those skilled in the art may make various modifications and variations to the present invention based on the spirit and principles of the present invention, and such modifications and variations are also within the scope of the present invention.

Claims

1. A drive assembly, characterized in that: The drive assembly includes a motor body and a gearbox: The motor body has a housing and an output shaft, The gear box has at least two connecting parts on one side abutting against the housing, and the gear box is fixedly connected to the motor body through the connecting parts. The gear box has an abutting surface abutting against the housing, the abutting surface has an opening, and the output shaft is inserted into the gear box through the opening. It is characterized in that The abutment surface of the gear box has at least two first protrusions protruding toward the housing, and, within the plane where the abutment surface is located, a direction parallel to the connecting line direction of the two connecting parts is set as a first direction, and the at least two first protrusions are arranged along a second direction perpendicular to the first direction.

2. The drive assembly according to claim 1, characterized in that In the plane where the abutting surface is located, with the center point of the opening of the abutting surface as the origin, an angle between a line connecting the first protrusion and the origin and the second direction is less than or equal to a preset angle.

3. The drive assembly according to claim 2, characterized in that The preset angle is 45 degrees.

4. The drive assembly according to claim 2, wherein: The at least two first protrusions include two first protrusions arranged on an extension line extending along the second direction and passing through the origin.

5. The drive assembly according to claim 2, characterized in that The at least two first protrusions include at least two pairs of first protrusions, the at least two pairs of first protrusions are respectively located on both sides of the first extension line, and each pair of first protrusions is symmetrically arranged relative to the second extension line, or, The at least two first convex portions include one first convex portion and two first convex portions respectively arranged on both sides of the first extension line, the one first convex portion is arranged on the second extension line, and the two first convex portions are symmetrically arranged with respect to the second extension line. The first extension line extends along the first direction and passes through the origin, and the second extension line extends along the second direction and passes through the origin.

6. The drive assembly according to claim 2, wherein: The number of the first protrusions is greater than or equal to 3.

7. The drive assembly according to claim 2, wherein: The abutting surface of the gear box further has at least one second protrusion protruding toward the housing. An angle formed between a line connecting the second convex portion and the origin and the second direction is greater than the preset angle.

8. The drive assembly according to claim 1, wherein: The motor body further has an electrical connector, which is disposed outside the housing and in the second direction.

9. The drive assembly according to claim 1, wherein: The motor body further includes a grounding component, which is disposed in the second direction and abuts against the housing.

10. The drive assembly according to claim 1, wherein: The height of the first protrusion is 0.45 mm to 0.55 mm.

11. An electrical product, characterized in that: The electrical product comprises the drive assembly according to any one of claims 1 to 10.

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