CN114552894B - Driving device and electric product - Google Patents

Abstract

The embodiment of the application provides a driving device and an electric product. The driving device includes a motor including a motor body having a shaft rotatable about a central axis and a housing accommodating the motor body and having an opening at least at one axial side, and a gear housing assembly connected to the motor, the gear housing assembly including a gear and a gear housing accommodating the gear, the gear housing assembly further including a bus bar having one end exposed from an end face of the gear housing facing the motor side, and one end of the bus bar being electrically connected to the winding wire in a state in which the gear housing is mounted to the motor. According to the embodiment of the application, the electric connection between the winding wire and the bus bar is realized by a simple structure, and the cost is reduced.

Description

Driving device and electric product

Technical Field

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

Background

The driving device generally includes a motor and an output member driven by the motor, and the motor side generally has a winding wire and an electric connection member electrically connected to a lead-out end of the winding wire, the electric connection member being further electrically connected to one end of a power supply terminal (such as a bus bar) on the output member side, the other end of the power supply terminal being electrically connected to an external power supply, and in such a configuration, the winding wire is electrically connected to the power supply terminal through the electric connection member, thereby achieving the electric connection with the external power supply.

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

Disclosure of Invention

The inventor found that in the above-mentioned conventional structure, a special electrical connection member needs to be provided between the winding wire and the power supply terminal, and the structure is complicated and the cost is high.

In order to solve at least one of the above problems or other similar problems, embodiments of the present application provide a driving device and an electrical product capable of realizing electrical connection between a wire and a bus bar with a simple structure, reducing costs.

According to a first aspect of an embodiment of the present application, there is provided a drive apparatus comprising a motor and a gearbox assembly connected to the motor,

The motor includes:

A motor body having a shaft rotatable about a central axis; and

A housing accommodating the motor main body and having an opening at least at one axial side,

The gearbox assembly includes a gear and a gearbox housing the gear,

The gearbox assembly further comprises a bus bar, one end of the bus bar is exposed from the end face of the gearbox, which faces the motor, and the end of the bus bar is electrically connected with the winding wire in a state that the gearbox is connected with the motor.

In one or more embodiments, the motor further includes a bus bar socket located inside the case and axially near one side of the opening, the winding wire being disposed in the bus bar socket.

In one or more embodiments, the motor body further includes an insulator for winding the wire, and the bus bar socket and the insulator are integrally formed.

In one or more embodiments, the gearbox and the bus bar are integrally formed.

In one or more embodiments, the one end of the bus bar has a recess extending in an axial direction.

In one or more embodiments, the driving device further has a flange covering the opening of the housing, and a through hole is provided at a position of the flange opposite to the bus bar socket.

In one or more embodiments, the flange has a notch at its edge,

A concave part extending along the axial direction is formed at the position of the gear box opposite to the notch,

The rim of the opening of the housing is provided with a protrusion protruding toward the gear case, the protrusion being inserted into the notch and the recess.

In one or more embodiments, the other end of the bus bar is exposed to the circumferential outside of the gear case,

The outer peripheral surface of the gear box is provided with a stand column protruding outwards.

In one or more embodiments, the busbar jack is provided with a groove and a notch, the groove and the notch being recessed from a surface of the busbar jack facing the gear box side,

The slot extends in a first direction at the surface, the notch extends in a second direction at the surface that is different from the first direction, and the notch extends through the bus bar receptacle in the second direction, the wire extending in the second direction within the notch.

According to a second aspect of an embodiment of the present application, there is provided an electrical product, wherein the electrical product has a drive device as described in the foregoing first aspect.

One of the advantages of the embodiment of the application is that one end of the bus bar is exposed from the end face of the gear box facing the motor, and one end of the bus bar is electrically connected with the winding wire in a state that the gear box is connected with the motor, thereby realizing the electrical connection between the winding wire and the bus bar with a simple structure and reducing the cost.

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

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

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

Drawings

The above and other objects, features and advantages of embodiments of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which:

FIG. 1 is a schematic view of a drive apparatus according to an embodiment of the first aspect of the present application;

FIG. 2 is another schematic view of a drive apparatus according to an embodiment of the first aspect of the present application;

FIG. 3 is a cross-sectional view of a drive apparatus according to an embodiment of the first aspect of the present application;

FIG. 4 is a schematic view of a busbar jack according to an embodiment of the first aspect of the present application;

FIG. 5 is yet another schematic view of a busbar jack according to an embodiment of the first aspect of the present application;

FIG. 6 is an enlarged partial schematic view of the busbar jack of FIG. 4;

FIG. 7 is a schematic view of a bus bar of an embodiment of the first aspect of the present application;

FIG. 8 is a partial schematic view of a bus bar of an embodiment of the first aspect of the present application;

FIG. 9 is a partial schematic view of a gearbox assembly of an embodiment of the first aspect of the present application;

FIG. 10 is a schematic illustration of a motor of an embodiment of the first aspect of the present application;

fig. 11 is a partial schematic view of the drive device of the first aspect of the present application.

Detailed Description

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

In embodiments of the present application, the term "and/or" includes any and all combinations of one or more of the associated listed terms. The terms "comprises," "comprising," "including," "having," and the like, are intended to reference the presence of stated features, elements, components, or groups of components, but do not preclude the presence or addition of one or more other features, elements, components, or groups of components.

In embodiments of the application, the singular forms "a," an, "and" the "may include plural forms and should be construed broadly as" one "or" one type "and not as limited to the meaning of" one; furthermore, the term "comprising" is to be interpreted as including both the singular and the plural, unless the context clearly dictates otherwise. Furthermore, the term "according to" should be understood as "based at least in part on … …", and the term "based on" should be understood as "based at least in part on … …", unless the context clearly indicates otherwise.

In the following description of the present application, for convenience of description, a direction extending along or parallel to the axis of the motor main body is referred to as an "axial direction", a radial direction centering on the axis of the motor main body is referred to as a "radial direction", and a direction surrounding the axis of the motor main body is referred to as a "circumferential direction". It is noted that these are for convenience of illustration only and are not limiting of the orientation of the motor in its manufacture and use.

The following describes the implementation of the embodiment of the present application with reference to the drawings.

Example of the first aspect

An embodiment of the first aspect of the present application provides a driving apparatus.

FIG. 1 is a schematic view of a drive apparatus according to an embodiment of the first aspect of the present application; FIG. 2 is another schematic view of the drive apparatus of the embodiment of the first aspect of the present application, showing the motor and gearbox assembly of the drive apparatus in an uncoupled state; fig. 3 is a cross-sectional view of the drive device according to an embodiment of the first aspect of the application, showing the drive device as seen in a plane through the central axis OO' shown in fig. 2.

As shown in fig. 1 to 3, the driving device 10 includes a motor 11 and a gear box assembly 12 connected to the motor 11, the motor 11 includes a motor main body 111 (see fig. 3) and a housing 112, the motor main body 111 has a shaft 1111 rotatable about a central axis OO ', the housing 112 accommodates the motor main body 111, and the housing 112 has an opening 1121 (see fig. 4) at least on one axial side (O side of the central axis OO'), and the gear box assembly 12 includes a gear 121 (see fig. 3) and a gear box 122 accommodating the gear 121.

In the embodiment of the present application, the driving device 10 may be used in various scenes or devices, for example, may be used for driving the opening and closing of a sunroof of an automobile, or for driving a wiper member of an automobile, or may be applied to various speed reducing devices, etc., to which the present application is not limited.

In the embodiment of the present application, the motor 11 may be a brushless motor, and the motor body may further have a stator, a rotor, a bearing, etc., and reference is made to the related art.

As shown in fig. 2, the gear case assembly 12 further includes a bus bar 123, one end 1231 of the bus bar 123 is exposed from an end face 1221 of the gear case 122 on the side toward the motor 11, and in a state where the gear case 122 is connected to the motor 11, the one end 1231 of the bus bar 123 is electrically connected to the winding wire 113 (see fig. 4).

As is apparent from the above-described embodiments, one end 1231 of the bus bar 123 is exposed from the end face 1221 of the gear case 122 facing the motor 11, and the one end 1231 of the bus bar 123 is electrically connected to the wire 113 in a state where the gear case 122 is connected to the motor 11, whereby the bus bar 123 and the wire 113 are directly electrically connected, and the electrical connection between the wire 113 and the bus bar 123 can be achieved with a simple structure, and the cost can be reduced.

Fig. 4 is a schematic view of a busbar jack according to an embodiment of the first aspect of the present application.

As shown in fig. 4, in one or more embodiments, the motor 11 may include a bus bar insertion opening 114, the bus bar insertion opening 114 being located inside the housing 112 and axially near one side of the opening 1121 (the O side of the central axis OO'), the bus bar insertion opening 114 having a winding 113 disposed therein. Thus, by providing the windings in the bus bar insertion openings, the windings can be reliably supported and accurately positioned, and the reliability of the electrical connection between the one end 1231 of the bus bar 123 and the windings 113 can be improved when the motor and gear case assembly is assembled.

In the embodiment of the present application, the bus bar insertion opening 114 may be made of any insulating material, such as resin, etc., and the bus bar insertion opening 114 may be integrally formed with other parts of the motor, such as the bus bar insertion opening 114 may be integrally formed with an insulating part or a housing in the motor, etc., and furthermore, the bus bar insertion opening 114 may be separately formed and then mounted in the motor, only to satisfy the condition that the bus bar insertion opening 114 is provided inside the housing 112 of the motor and at a position axially near one side (the O side of the central axis OO') of the opening 1121, and when the motor and the gear case assembly are assembled, one end 1231 of the bus bar 123 may be electrically connected to the wire 113 in the bus bar insertion opening 114 when the motor 11 is inserted in the axial direction.

Fig. 5 is a further schematic view of a busbar jack according to an embodiment of the first aspect of the present application, showing the case where the busbar jack is integrally formed with an insulator around which a motor winding is wound.

As shown in fig. 5, in one or more embodiments, the motor body 111 may further include an insulator 115 for winding the wire 113, and the bus bar socket 114 and the insulator 115 are integrally formed. Thus, the bus bar insertion opening is formed integrally with the insulator 115, which can simplify the manufacturing process and facilitate the support of the winding wire to the bus bar insertion opening.

For example, in the embodiment of the present application, the insulator 115 may be an insulating member of a stator, the stator may further have a stator core 116, the insulator 115 is inserted into the stator core 116 in an axial direction and the wire 113 is wound on the insulator 115 to form a stator winding, and the bus bar insertion hole 114 may be exposed from an end surface of the stator core 116 facing a side of the gear case.

Fig. 6 is an enlarged partial schematic view of the busbar jack shown in fig. 4. As shown in fig. 6, in one or more embodiments, the bus bar socket 114 is provided with a slot 1141 and a notch 1142, the slot 1141 and the notch 1142 are recessed from a surface 1143 of the bus bar socket 114 facing the side of the gear case 122, the slot 1141 extends in a first direction P1 at the surface 1143, the notch 1142 extends in a second direction P2 different from the first direction P1 at the surface 1143, and the notch 1142 extends through the bus bar socket 114 in the second direction P2, and the wire 113 extends in the second direction P2 within the notch 1142. Thus, the wire 113 can be provided in the bus bar insertion hole 114 through the notch 1142, and the wire 113 on the motor side can be fixed, so that the bus bar can be brought into contact with the wire and electrically connected when the bus bar is inserted into the slot 1141.

In the embodiment of the present application, the axial depth of the slot 1141 may be greater than the axial depth of the notch 1142, and thus, in the case where the wire 113 is disposed in the notch 1142, it is possible to ensure that the bus bar 123 can be reliably contacted with the wire and electrically connected with the wire while being inserted into the slot 1141, but not limited thereto, the axial depth of the slot 1141 and the axial depth of the notch 1142 may be other relationships.

In the embodiment of the present application, the first direction P1 and the second direction P2 may be perpendicular or substantially perpendicular to each other, but not limited thereto, and the two may be in other relationships.

In the embodiment of the present application, the bus bar insertion opening 114 may have a substantially rectangular shape when viewed from the axial direction, and the length of the side parallel to the first direction P1 may be greater than the length of the side parallel to the second direction P2, so that the slot 1141 may have a larger size in the first direction P1, which can ensure the size of the bus bar inserted into the notch 1142 in the first direction P1, and facilitate the destruction of the insulation layer of the wire by the insertion of the bus bar into the notch 1142. The application is not limited in this regard and bus bar socket 114 may be other shapes.

In the embodiment of the present application, the shape of the slot 1141 and the notch 1142 of the bus bar socket 114 on the surface 1143 of the bus bar socket 114 may be any shape, for example, may be rectangular as shown in fig. 6, but is not limited thereto, and may be other shapes, for example, the slot 1141 may be circular, etc.

In one or more embodiments, as shown in fig. 6, the number of the bus bar sockets 114 may be 3, but not limited thereto, the number of the bus bar sockets 114 may be other values, the plurality of bus bar sockets 114 may be equally or unequally spaced in the circumferential direction, and the number of the bus bar sockets 114 may be equal to the number of the bus bars 123.

In one or more embodiments, the gearbox 122 may be integrally formed with the bus bar 123, thereby saving assembly steps between the bus bar 123 and the gearbox 122, enabling improved positioning accuracy of the bus bar 123 when the gearbox assembly 12 and the motor 11 are assembled, and ensuring reliable electrical connection of the bus bar 123 and the windings 13. However, the present application is not limited thereto, and the gear case 122 and the bus bar 123 may be assembled after being separately molded.

In the embodiment of the present application, the gear case 122 may be made of a resin material, the bus bar 123 may be made of various conductive materials, and in the case where the gear case 122 and the bus bar 123 are integrally formed, the bus bar 123 may be first formed, then the bus bar 123 is positioned using a mold, and then the gear case 122 is formed by injecting a resin into the mold so that the gear case 122 and the bus bar 123 are integrally formed.

Fig. 7 is a schematic view of a bus bar of an embodiment of the first aspect of the present application, and fig. 8 is a partial schematic view of a bus bar of an embodiment of the first aspect of the present application.

As shown in fig. 7 and 8, in one or more embodiments, one end 1231 of the bus bar 123 has a recess 1232 extending in an axial direction. Thus, in the case where the bus bar 123 is inserted into the motor 11, the insulation layer of the wire 113 is broken by the concave portion 1232 of the bus bar 123, and the electrical connection between the bus bar 123 and the wire 113 can be achieved, and in the case where the wire 113 is provided in the bus bar insertion opening 114, the accurate positioning and the reliable holding of the wire 113 can be achieved by the bus bar insertion opening 114, and in the operation process of inserting the bus bar 123 into the motor 11, the alignment of the concave portion 1232 of the bus bar 123 and the wire 113 can be ensured, which is advantageous for reliably achieving the electrical connection.

In the embodiment of the present application, as shown in fig. 7 and 8, the recess 1232 of the one end 1231 of the bus bar 123 has a shape in which the opening size D is large and the inside size D is small, and the opening size D may be larger than the diameter of the winding wire 113 (including the insulation layer and the core wire) and the inside size D may be smaller than the diameter of the winding wire 113, whereby, when the bus bar 123 is inserted into the motor 11 with the motor and gearbox assembly assembled, the prongs on both sides of the recess 1232 can be made to reliably break the insulation layer of the winding wire with the insertion action, without a special operation of removing the insulation layer of the winding wire.

In one or more embodiments, as shown in fig. 7, one end 1231 of the bus bar 123 has a flat plate portion 1233, and the bus bar 123 is further provided with a circular through hole 1235, where the circular through hole 1235 is disposed on the bus bar 123, for example, may be disposed on the other end of the bus bar 123, and may be disposed at other positions. Thus, in the case where the gear case and the bus bar terminal are integrally molded by positioning the bus bar by the mold and injecting the resin molding gear case into the mold, axial positioning of the bus bar is achieved by clamping the flat plate portion 1233 of the bus bar 123 by the jig, radial positioning of the bus bar 123 is achieved by inserting the positioning pin into the circular through hole 1235 of the bus bar 123, facilitating resin injection molding.

In the embodiment of the present application, as shown in fig. 7 and 8, the concave portion 1232 penetrates the bus bar 123 in the thickness direction of the flat plate portion 1233 at one end 1231 of the bus bar 123, and two opposite fork portions are formed at both sides of the concave portion 1232, and the opposite surfaces of the two fork portions may form an edge protruding toward the inside of the concave portion, thereby helping to break the insulating layer of the wire 113.

In the embodiment of the present application, as shown in fig. 7 and 8, the number of the bus bars 123 may be 3, but is not limited thereto, and the number of the bus bars may be set according to actual needs.

Fig. 9 is a partial schematic view of the gear box assembly of the embodiment of the first aspect of the present application, showing the other end 1234 of the bus 123 exposed from the gear box 122.

As shown in fig. 9, in one or more embodiments, the other end 1234 of the bus bar 123 is exposed to the circumferential outside of the gear case 122, whereby the electrical connection of the other end 1234 of the bus bar 123 and the external member can be achieved by snapping an external member, such as a control circuit board, to the gear case, thereby achieving the electrical connection of the bus bar 123 and the external member.

As illustrated in fig. 9, in one or more embodiments, the outer peripheral surface of the gearbox 122 is provided with outwardly protruding studs 1224. Thus, when the other end 1234 of the bus bar 123 is connected to the external member, the external member can be reliably fixed by inserting the column 1224 into the external member. In an embodiment of the present application, the stand 1224 may be disposed on the same side of the outer circumferential surface of the gear case 122 as the other end 1234 of the bus bar 123.

Fig. 10 is a schematic view of a motor of an embodiment of the first aspect of the application, showing the case where the opening of the motor is provided with a flange.

As shown in fig. 10, in one or more embodiments, the driving device 10 may further have a flange 13, the flange 13 covering the opening 1121 of the housing 112, and a through hole 131 provided at a position of the flange 13 opposite to the bus bar insertion hole 114. Thus, the bus bar 123 can be inserted into the bus bar insertion hole 114 through the flange 13, and the bus bar 123 can be more reliably inserted into the bus bar insertion hole to be electrically connected to the wire.

Fig. 11 is a partial schematic view of the drive of the first aspect of the application showing a schematic view of a gear box, flange and a portion of the motor in an assembled state.

As shown in fig. 10 and 11, in one or more embodiments, the edge of the flange 13 is provided with a notch 132, a recess 1222 (shown in fig. 2) extending in the axial direction is formed at a position of the gear case 122 opposite to the notch 132, the edge 1122 of the opening 1121 of the casing 112 is provided with a protrusion 1123 protruding toward the gear case 122, and the protrusion 1123 is inserted into the notch 132 and the recess 1222. Thus, circumferential positioning between the casing 112, the flange 13 and the gear case 122 is achieved by the engagement of the protrusions 1123 with the notches 132, the recesses 1222.

In the embodiment of the present application, as shown in fig. 10 and 11, the outer circumferential surface at the partial rim 1122 of the opening 1121 of the casing 112 may be a plane S, whereby, when the motor and the gear case are assembled, the motor and the gear case can be easily assembled by sandwiching the motor and performing circumferential positioning through the plane S. The plane S may be formed at a plurality of positions in the circumferential direction of the casing 112, for example, at circumferentially opposite positions of the casing.

In the embodiment of the present application, the protruding portion 1123 may be formed to protrude from the rim 1122 of the outer circumferential surface of the casing 112, which is the plane S, toward the gear case 122, thereby facilitating assembly of the motor and the gear case.

According to the above embodiment of the present application, the one end 1231 of the bus bar 123 is exposed from the end face 1221 of the gear case 122 facing the motor 11 side, and the one end 1231 of the bus bar 123 is electrically connected to the wire 113 in the state where the gear case 122 is mounted to the motor 11, whereby the bus bar 123 and the wire 113 are directly electrically connected, so that the electrical connection between the wire 113 and the bus bar 123 can be achieved with a simple structure, and the cost can be reduced.

Embodiments of the second aspect

An embodiment of the second aspect of the present application provides an electrical product having the drive device 10 described in the embodiment of the first aspect. Since the structure of the driving apparatus 10 has been described in detail in the embodiment of the first aspect, the contents thereof are incorporated herein, and the description thereof is omitted.

In the embodiment of the present application, the electric product may be any device or equipment using the driving device 10, including various home appliances, office automation equipment, industrial equipment, or constituent parts in various equipment, such as various speed reducing devices including the driving device 10, or devices for driving the sunroof to open and close including the driving device 10, or parts for controlling the wiper action of the automobile including the driving device 10, or the like.

According to the embodiment of the present application, in the electric product including the driving device 10, the one end 1231 of the bus bar 123 is exposed from the end face 1221 of the gear case 122 toward the motor 11 side, and the one end 1231 of the bus bar 123 is electrically connected to the winding wire 113 in the state where the gear case 122 is attached to the motor 11, whereby the bus bar 123 and the winding wire 113 are directly electrically connected, whereby the electrical connection between the winding wire 113 and the bus bar 123 can be achieved with a simple structure, and the cost can be reduced.

It is to be noted that the above has been described only by way of example of the present application, but the present application is not limited thereto, and may be appropriately modified based on the above embodiments. In addition, the respective components are described above by way of example only, but the embodiment of the present application is not limited thereto, and the specific contents of the respective components may also refer to the related art, and components not shown in the drawings may be added or one or more components in the drawings may be reduced.

While the embodiments of the present application have been described in connection with specific embodiments, it should be understood by those skilled in the art that the descriptions are illustrative and are not intended to limit the scope of the embodiments of the present application. Various modifications and alterations of this embodiment will occur to those skilled in the art in light of the spirit and principles of this embodiment, and are to be seen as within the scope of this embodiment.

The preferred implementation of the embodiments of the present application has been described above with reference to the accompanying drawings. The many features and advantages of the embodiments are apparent from the detailed specification, and thus, it is intended by the appended claims to cover all such features and advantages of the embodiments which fall within the true spirit and scope thereof. Further, since numerous modifications and changes will readily occur to those skilled in the art, it is not desired to limit the implementation of the embodiments of the application to the exact construction and operation illustrated and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope thereof.

Claims (7)

1. A drive apparatus includes a motor and a gear box assembly coupled to the motor,

The motor includes:

A motor body having a shaft rotatable about a central axis; and

A housing accommodating the motor main body and having an opening at least at one axial side,

The gearbox assembly includes a gear and a gearbox housing the gear,

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

The gear case assembly further includes a bus bar having one end exposed from an end face of the gear case facing the motor, the one end of the bus bar being electrically connected to a winding wire in a state where the gear case is connected to the motor,

The motor further includes a bus bar insertion opening which is located inside the housing and is located at a side axially close to the opening, the bus bar insertion opening being provided therein with the winding wire,

The driving device is also provided with a flange plate, the flange plate covers the opening of the shell, a through hole is arranged at the position of the flange plate opposite to the bus bar socket,

The edge of the flange plate is provided with a notch,

A concave part extending along the axial direction is formed at the position of the gear box opposite to the notch,

The rim of the opening of the housing is provided with a protrusion protruding toward the gear case, the protrusion being inserted into the notch and the recess.

2. The driving device according to claim 1, wherein,

The motor body further includes an insulator for winding the wire, and the bus bar socket and the insulator are integrally formed.

3. The driving device according to claim 1, wherein,

The gear case and the bus bar are integrally formed.

4. The driving device according to claim 1, wherein,

The one end of the bus bar has a recess extending in an axial direction.

5. The driving device according to claim 1, wherein,

The other end of the bus bar is exposed to the circumferential outside of the gear case,

The outer peripheral surface of the gear box is provided with a stand column protruding outwards.

6. Drive device according to claim 1 or 2, characterized in that,

The bus bar socket is provided with a groove and a notch, the groove and the notch are recessed from the surface of the bus bar socket facing the gear box side,

The slot extends in a first direction at the surface, the notch extends in a second direction at the surface that is different from the first direction, and the notch extends through the bus bar receptacle in the second direction, the wire extending in the second direction within the notch.

7. An electric product, characterized in that the electric product has a drive device as claimed in any one of claims 1-6.