CN117616672A - Electronic component module and motor - Google Patents

Abstract

An electric machine, comprising: a base; a first bus coupled to the base and including a first body and a first coupling portion extending from the first body; a second bus disposed outside the first bus and including a second body and a second coupling portion extending from the second body; and a third bus line disposed outside the second bus line and including a third body and a third coupling portion extending from the third body, wherein the first coupling portion does not overlap the second body and the third body in the axial direction and the second coupling portion does not overlap the third body in the axial direction.

Description

Electronic component module and motor

Technical Field

The embodiment of the invention relates to an electronic component module and a motor.

Background

The motor includes a housing, a stator disposed within the housing, and a rotor disposed within the stator, and is a device that generates rotational motion through electromagnetic interaction between the stator and the rotor. Specifically, the coil is wound on the stator, and a magnet facing the coil is provided on the rotor so that the rotor can be rotated by the action of the coil and the magnet.

In general, an electric motor used in a vehicle (vehicle) is generally connected with a plurality of coils in parallel to reduce loss due to coil resistance. Thus, when connected in parallel, the method used is to extend each coil up to the input/output terminal and connect all around at that terminal.

Accordingly, a bus module is provided on the upper side of the stator to connect coils provided in parallel. The bus module is disposed to correspond to an upper surface of the stator, and may include a bus for connection to the coil terminals. To implement a three-phase circuit, a bus includes a plurality of buses having different polarities.

However, the bus module according to the related art has a problem in that miniaturization is difficult because the size of the motor is increased due to the arrangement structure in which a plurality of buses are stacked in the axial direction.

Disclosure of Invention

Subject matter of the technology

Embodiments of the present invention are directed to providing a motor which can be miniaturized by improving its structure.

Further, it is intended to provide an electronic component module and a motor capable of improving production efficiency and reducing manufacturing costs by improving a fastening structure between components.

Technical proposal

The motor according to the embodiment of the invention comprises: a base; a first bus coupled to the base and including a first body and a first coupling portion extending from the first body; a second bus disposed outside the first bus and including a second body and a second coupling portion extending from the second body; and a third bus line disposed outside the second bus line and including a third body and a third coupling portion extending from the third body, wherein the first coupling portion does not overlap the second body and the third body in the axial direction and the second coupling portion does not overlap the third body in the axial direction.

The upper surfaces of the first body, the second body, and the third body may be disposed on the same plane.

The width of each of the first body to the third body is greater than the height thereof.

The height of the first to third bodies may be 5mm or less.

The first to third bodies may be formed in a closed shape.

The second body may include a region overlapping the first coupling portion in the circumferential direction when viewed from above.

The second bus may be disposed between the first bus and the third bus.

A guide protruding more upward than the other regions is provided on the upper surface of the base, and the first bus may include a guide hole into which the guide is coupled.

The upper surface of the guide may form the same plane as the upper surface of the first bus bar, the upper surface of the second bus bar, and the upper surface of the third bus bar.

Each of the first, second, and third coupling portions may include: a hole through which a coil penetrates; and a protrusion to which the coil is coupled.

Advantageous effects

With the embodiment of the present invention, there is an advantage in that the height of the bus module can be reduced compared with the past, whereby by setting a plurality of buses connected to coils of different polarities to form the same height, the motor can be easily miniaturized.

Further, since the connector for electrical connection between the electronic component and the coil is formed as one body, there is an advantage in that production efficiency is improved by reducing assembly man-hours.

Further, since the terminals and the connector terminals are disposed to overlap each other within a single body, there is an advantage in that the size of the motor can be reduced as compared with the related art.

Furthermore, the connector terminals for the electrical connection between the electronic component and the coil are realized as female connector structures, while the terminals are realized as male connector structures, which enable the bus module and the electronic component module to be coupled in a complementary manner.

Drawings

Fig. 1 is a perspective view of a motor according to a first embodiment of the present invention.

Fig. 2 is a cross-sectional view showing the internal configuration of the motor according to the first embodiment of the present invention.

Fig. 3 is a plan view showing side surfaces of a stator and a bus module according to a first embodiment of the present invention.

Fig. 4 is a perspective view of a stator and bus module according to a first embodiment of the present invention.

Fig. 5 is a perspective view of a bus module according to a first embodiment of the present invention.

Fig. 6 is an exploded perspective view of a bus module according to a first embodiment of the present invention.

Fig. 7 is a plan view showing a side surface of a bus module according to a first embodiment of the present invention.

Fig. 8 is a perspective view of an electronic component module according to a second embodiment of the present invention.

Fig. 9 is a perspective view of an electronic component module according to a second embodiment of the present invention.

Fig. 10 is a plan view showing an upper surface of an electronic component module according to a second embodiment of the present invention.

Fig. 11 is an exploded perspective view of an electronic component module according to a second embodiment of the present invention.

Fig. 12 is a view showing fig. 4 from another angle.

Fig. 13 is a perspective view of a connector terminal according to a second embodiment of the present invention.

Fig. 14 and 15 are diagrams illustrating an assembly process of a bus module and an electronic component module according to a second embodiment of the present invention.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

However, the technical idea of the present invention is not limited to some embodiments to be described, but may be implemented in various forms, and one or more constituent elements may be selectively combined or replaced between the embodiments within the technical idea of the present invention.

Furthermore, terms (including technical and scientific terms) used in embodiments of the present invention, unless explicitly defined and described, may be construed as meanings commonly understood by one of ordinary skill in the art, and commonly used terms (e.g., terms defined in dictionaries) may be construed in view of the meanings of the context of the related art.

Furthermore, the terminology used in the description is for the purpose of describing the embodiments only and is not intended to be limiting of the invention. In this specification, the singular form may include the plural form unless specifically stated in the phrase, and when described as "at least one (or more than one) of A, B and C," it may include one or more of all combinations that can be combined with A, B, and C.

In addition, in the description of the components of the embodiments of the present invention, terms such as first, second, A, B, (a), and (b) will be used.

These terms are only used to distinguish one element from another element, and do not limit the nature, order, or sequence of the elements.

Also, when an element is referred to as being "connected," "coupled," or "interconnected" to another element, it can be directly connected, coupled, or interconnected to the other element, but may also include "connected," "coupled," or "interconnected" with another member in between the other members.

Further, when described as being formed or disposed "above" or "below" each component, "upper (above) or" below "means that it includes not only the case where two components are in direct contact but also the case where one or more other components are formed or disposed between the two components. Further, when expressed as "upper (upper)" or "lower (lower)", it means that not only an upward direction with reference to one component but also a downward direction can be included.

Fig. 1 is a perspective view of a motor according to a first embodiment of the present invention; fig. 2 is a cross-sectional view showing an internal configuration of the motor according to the first embodiment of the present invention; fig. 3 is a plan view showing side surfaces of a stator and a bus module according to a first embodiment of the present invention; fig. 4 is a perspective view of a stator and bus module according to a first embodiment of the invention; FIG. 5 is a perspective view of a bus module according to a first embodiment of the invention;

FIG. 6 is an exploded perspective view of a bus module according to a first embodiment of the present invention; and fig. 7 is a plan view showing a side surface of a bus module according to a first embodiment of the present invention.

Referring to fig. 1 to 7, an electric machine 10 according to a first embodiment of the present invention may include a housing 100, a stator 300, a rotor 400, a shaft 200, and a bus module 500.

The housing 100 forms an external appearance of the motor 100, and a space in which the stator 300, the rotor 400, the shaft 200, and the bus module 500 are disposed may be formed therein. A hole may be formed in the upper surface or the lower surface of the housing 100 to allow the shaft 200 to pass therethrough. The space within the housing 100 may include multiple regions having different cross-sectional areas. For example, the plurality of regions may include a first region and a second region, the second region having a larger cross-sectional area than the first region. The stator 300 and the rotor 400 may be disposed in a first region, and the bus module 500 may be disposed in a second region.

The stator 300 may be placed within the housing 100. A space for the rotor 400 and the shaft 200 to be placed may be formed in the stator 300. The coil 320 may be wound around the stator 300. For insulation, an insulator 310 may be disposed on an outer surface of the stator 300, and a coil 320 may be wound on the outer surface of the insulator 310.

Both ends of the coil 320 may extend upward from the stator 300. Both ends of the coil 320 may be coupled to the bus module 500.

The coil 320 may include a first coil having a first polarity, a second coil having a second polarity, and a third coil having a third polarity.

The rotor 400 may be disposed within the stator 300. The rotor 400 may include a rotor core and a magnet 420 disposed on an outer surface of the rotor core. The magnet 420 may be disposed to face the coil 320. Thus, the rotor 400 may be rotated by electromagnetic interaction between the magnets 420 and the coils 320.

Shaft 200 may be coupled to the center of rotor 400. The shaft 200 may rotate together with the rotor 400. Bearings 250 and 260 for supporting the rotation of the shaft 200 may be provided in a space within the housing 100. The bearings 250 and 260 may include a lower bearing 250 disposed at a lower portion of the housing 100 and an upper bearing 260 disposed at an upper portion of the housing 100.

The bus module 500 may be disposed on an upper portion of the stator 300. The bus module 500 may electrically connect the controller (not shown) and the cable 320. Thus, the output of the motor 10 may be controlled by the controller.

Bus module 500 may include a base 510, a first bus 530, a second bus 550, and a third bus 570.

The base 510 is made of an insulating material and may be disposed on an upper portion of the stator 300. The base 510 may have a plate shape. Shaft hole 513 may be formed in the center of base 510 such that shaft 200 penetrates the shaft hole. The first bus 530, the second bus 550, and the third bus 570 may be disposed on an upper surface of the base 510.

Guides 512 protruding more upward than other areas may be provided on the upper surface of the base 510. The guide 512 may be disposed in a central region of the upper surface of the base 510. The first bus 530 may be coupled to an outer surface of the guide 512.

The base 510 may include a plurality of holes 518. A plurality of holes 518 may be provided outside the guide 512. The plurality of holes 518 may be radially disposed relative to the center of the base 510. A plurality of holes 518 may be provided and disposed circumferentially spaced apart from one another.

A plurality of holes 518 may be formed to penetrate from the upper surface to the lower surface of the base 510. The coil 320 wound around the stator 300 may extend upwardly from the base 510 through the plurality of holes 518. That is, the coil 320 may be disposed to penetrate the plurality of holes 518.

The plurality of holes 518 may include a first hole 518a, a second hole 518b, and a third hole 518c. The first, second, and third apertures 518a, 518b, 518c may have different cross-sectional areas. For example, the cross-sectional area of the second aperture 518b may be smaller than the cross-sectional area of the first aperture 518a and larger than the cross-sectional area of the third aperture 518c.

The polarities of the power sources of the coils 320 passing through the first, second, and third holes 518a, 518b, and 518c may be different from each other. For example, coil 320 through first aperture 518a has a U-phase power supply, coil 320 through second aperture 518b has a V-phase power supply, and coil 320 through third aperture 518c has a W-phase power supply.

Each of the first, second, and third holes 518a, 518b, 518c may be provided in plurality and spaced apart in the circumferential direction. Accordingly, the second and third holes 518b and 518c may be disposed between adjacent first holes 518 a; the third hole 518c and the first hole 518a may be disposed between adjacent second holes 518 b; while the second hole 518b and the first hole 518a may be disposed between adjacent third holes 518c.

Meanwhile, the first to third buses 530, 550 and 570 may be integrally coupled to the base 510 by insert injection molding. However, this is only an example, and the first to third buses 530, 550, and 570 may be stacked on the base 510.

The first bus 530 may be disposed on the base 510. The first bus 530 may have a circular cross-section. A guide hole 532 may be formed at the center of the first bus 530. The cross-sectional shape of the guide hole 532 may be formed to correspond to the cross-sectional shape of the guide 512. The first bus 530 may be coupled to the guide 512 through a guide hole 532. In this case, the side surface of the guide 512 may be in contact with the inner surface of the first bus 530 where the guide hole 532 is formed.

The first bus 530 may have a first body 531. The first body 531 may have a closed loop shape.

The height of the first bus bars 530 in the up-down direction may correspond to the height of the guides 512 protruding from the upper surface of the base 510. Accordingly, the upper surface of the first bus bar 530 may form the same plane as the upper surface of the guide 512.

The first bus 532 may be coupled to a first coil. To this end, first bus 532 may include a first coupling 540. The first coupling part 540 may have a shape extending outwardly from the first body 531. The first coupling part 540 may have a shape protruding radially outward from other areas. The first coupling parts 540 may be provided in plurality and spaced apart from each other in the circumferential direction.

The first bus 530 may be formed of a metal material.

The first coupling part 540 may include a first hole 546 penetrating from the upper surface to the lower surface, and a first protrusion 542 provided on an upper portion of the first hole 546. The first coil may pass through the first hole 546 and be coupled to the first protrusion 542. The first coil may be fused with the first projection 542. The first coil may be fused to the lower surface of the first protrusion 542. The first projection 542 may have an area that is bent at least once and more. The first projection 542 may be disposed to overlap the first hole 546 in the up-down direction.

The first projection 542 may be formed by cutting and bending a portion of the first coupling part 540, and a cut region generated during the formation of the first projection 542 may be the first hole 546.

The first coupling part 540 may be disposed not to overlap the second body 551 of the second bus bar 550 and the third body 571 of the third bus bar 570 in the axial direction, which will be described later.

The second bus 550 may be disposed on the base 510. The second bus 550 may be disposed outside the first bus 530 in a radial direction. The second bus 550 may be spaced apart from the first bus 530 by a predetermined distance. An insulating sheet (not shown) may be disposed between the second bus 550 and the first bus 530.

The second bus 550 may include a second body 551. The second body 551 may have a circular cross-section. The second body 551 may have a closed loop shape. The second body 551 may include a region where at least a portion of the second body 551 overlaps the first coupling portion 540 in the circumferential direction when viewed from above.

The height of the second bus 550 in the up-down direction may correspond to the height of the first bus 530 in the up-down direction and the height of the guide 512 protruding from the upper surface of the base 510. Accordingly, the upper surface of the second bus 550, the upper surface of the first bus 530, and the upper surface of the guide 512 may form the same plane.

The first grooves 557 may be formed on an inner surface of the second bus line 550 facing the first bus line 530. The first groove 557 may have a shape recessed radially outward more than other regions. The first coupling portion 540 of the first bus 530 may be disposed in the first groove 557.

The second groove 558 may be disposed on an outer surface of the second bus 550 facing the third bus 570. The second groove 558 may have a shape that is recessed radially inward than other areas. The first protrusion 575 of the third bus 570 may be disposed in the second recess 558.

By the first grooves 557 and the second grooves 558, the second bus 550 may have a plurality of regions having different lengths from the center in the radial direction. The first grooves 557 and the second grooves 558 may be alternately arranged along the circumferential direction of the second bus 550. The first groove 557 and the second groove 558 may have regions that at least partially overlap each other in the circumferential direction.

The second bus 550 may be coupled with the second coil. To this end, the second bus 550 may include a second coupling 560. The second coupling part 560 may extend from the second body 551. The plurality of second coupling parts 560 may be provided and disposed to be spaced apart from each other in the circumferential direction. Some of the plurality of second coupling parts 560 are disposed between the first groove 557 and the second groove 558 in the circumferential direction, and others may be disposed to protrude outward from the bottom surface of the second groove 558.

The second bus 560 may be formed of a metal material.

The second coupling part 560 may include a second hole 566 penetrating from the upper surface to the lower surface, and a second protrusion 562 disposed on an upper portion of the second hole 566. The second coil may pass through the second hole 566 and be coupled to the second protrusion 562. The second coil may be fused with the second protrusion 562. The second coil may be fused to the lower surface of the second protrusion 562. The second protrusion 562 may have an area that is bent at least once and more. The second protrusion 562 may be disposed to overlap the second hole 566 in the up-down direction.

The second protrusion 562 is formed by cutting and bending a portion of the second coupling part 560, and a cut region generated during the formation of the second protrusion 562 may be the second hole 566.

The second coupling part 560 may be disposed not to overlap the third body 571 of the third bus bar 570 in the axial direction, which will be described later.

A third bus 570 may be disposed on the base 510. The third bus 570 may be disposed outside the first bus 530 and the second bus 550 in a radial direction. The third bus 570 may be spaced apart from the second bus 550 by a predetermined distance. An insulating sheet (not shown) may be disposed between the third bus 570 and the second bus 550.

The third bus 570 may have a circular cross-section. The third bus 570 may include a third body 571 in the shape of a closed loop. The height of the third bus bars 570 in the up-down direction may correspond to the height of the first bus bars 530 and the second bus bars 550 in the up-down direction and the height of the guide 512 protruding from the upper surface of the base 510. Accordingly, the upper surface of the third bus 570 may form the same plane as the upper surface of the first bus 530, the upper surface of the second bus 550, and the upper surface of the guide. In other words, the upper surfaces of the first, second, and third bodies 531, 551, and 571 may be formed to form the same plane.

A first protrusion 575 protruding radially inward than the other region may be provided on an inner surface of the third bus 570 facing the second bus 550. Due to the first protrusion 575, an outer surface of the third bus bar 570 overlapping the first protrusion 575 in the radial direction may have a groove shape. The first protrusion 575 may be at least partially disposed within the second recess 558 of the second bus 550.

The third bus 570 may have a plurality of regions having different lengths from the center in the radial direction due to the first protrusion 575.

The third bus 570 may be coupled with a third coil. To this end, the third bus 570 may include a third coupling portion 580. The third coupling portion 580 may extend from the third body 571. A plurality of third coupling parts 580 may be provided and disposed to be spaced apart from each other in a circumferential direction. The third coupling portion 580 may be provided to protrude inward from the first protrusion 575.

The third bus 570 may be formed of a metal material.

The third coupling portion 580 may include a third hole 586 penetrating from the upper surface to the lower surface, and a third protrusion 582 disposed on an upper portion of the third hole 586. The third coil may pass through the third aperture 586 and be coupled to the third protrusion 582. The third coil may be fused with the third protrusion 582. The third coil may be fused to the lower surface of the third protrusion 582. The third protrusion 582 may have an area that is bent at least once and more. The third protrusion 582 may be disposed to overlap the third hole 586 in the up-down direction.

The third protrusion 582 is formed by cutting and bending a portion of the third coupling part 580, and a cut region generated during the formation of the third protrusion 582 may be the third hole 586.

Meanwhile, the first coupling part 540, the second coupling part 560, and the third coupling part 580 may be disposed not to overlap each other in the radial direction of the bus module 500. Further, the first coupling part 540, the second coupling part 560, and the third coupling part 580 may be disposed to at least partially overlap each other in the circumferential direction of the bus module 500.

The radial width of each of the first body 531, the second body 551, and the third body 571 may be greater than the axial height. As an example, the height of each of the first body 531, the second body 551, and the third body 571 may be formed to be 5mm or less.

Meanwhile, in the present specification, the first to third protrusions 542, 562 and 582 are formed by cutting from the first to third coupling parts 540, 560 and 580, respectively, however, this is only an example, and the first to third protrusions 542, 562 and 582 may be formed by cutting a portion of the first to third bodies 531, 551 and 571. In this case, holes are not formed in the first to third coupling parts 540, 560 and 580.

According to the above structure, a plurality of buses connected to coils of different polarities are provided to form the same height, whereby the height of the bus module can be reduced as compared with the related art, and there is an advantage in that the motor can be easily miniaturized.

Described below are an electronic component module and a motor according to a second embodiment.

Fig. 8 is a perspective view of an electronic component module according to a second embodiment of the present invention; fig. 9 is a perspective view of an electronic component module according to a second embodiment of the present invention; fig. 10 is a plan view showing an upper surface of an electronic component module according to a second embodiment of the present invention; fig. 11 is an exploded perspective view of an electronic component module according to a second embodiment of the present invention; fig. 12 is a view showing fig. 4 from another angle; and fig. 13 is a perspective view of a connector terminal according to a second embodiment of the present invention.

Referring to fig. 8 to 13, the electronic component module 20 according to the second embodiment of the present invention may include an electronic component 1100 and a connector 1200. The electronic component module 20 according to the second embodiment of the present invention may be implemented as a single module by coupling the electronic component 1100 with the connector 1200. The electronic component 1100 and the connector 1200 may be electrically connected to each other. The electronic component 1100 and the connector 1200 are coupled in a first direction X.

The electronic component 1100 is a component for driving a motor (which will be described later), and may be electrically connected to other components within the motor. For example, the electronic component 1100 may be an Automotive Power Module (APM) for controlling current in a motor, which will be described later, but this is only an example, and the electronic component 1100 may include various components for driving the motor.

The electronic component 1100 may include a core 1110 and one or more leads 1120, 1180, and 1190 extending from the core 1110.

The core 1110 may constitute the body of the electronic component 1100. The core 1110 may be plate-shaped with a rectangular cross-section. The core 1110 may be disposed spaced apart from the connector 1200 along the first direction X.

Leads 1120, 1180, 1190 may extend outward from core 1110. Leads 1120, 1180, and 1190 may include a first lead 1120. The first lead 1120 may extend from the core 1110 and be coupled to the connector 1200. One end of the first lead 1120 may be connected to the core 1110, and the other end of the first lead 1120 may be connected to the connector 1200.

The first lead 1120 may include: an extension 1122 extending from the core 1110; and a coupling portion 1124 provided at an end of the extension portion 1122 and coupled to the connector 1200. The extension 1122 may be in the shape of a strip. The coupling portion 1124 may have a width greater than the extension portion 1122 and may have a rectangular cross-section. Here, the width may be a length defined in a second direction Y perpendicular to the first direction X. When the electronic component 1100 and the connector 1200 are coupled, at least a portion of the extension portion 1122 and the coupling portion 1124 may be provided in the first body 1210 of the connector 1200, which will be described later.

The coupling portion 1124 may include a first coupling hole 1126. The first coupling hole 1126 may be formed to penetrate from an upper surface to a lower surface of the coupling portion 1124. A connector terminal to be described later may be coupled to the first coupling hole 1126. The first coupling hole 1126 may include a central region 1126a and edge regions 1126b disposed at both sides of the central region 1126 a. The plurality of edge regions 1126b and the central region 1126a may be disposed along the second direction Y. The width of the edge region 1126b may be greater than the width of the center region 1126 a. The length of the edge region 1126b in the first direction X may be greater than the length of the center region 1126a in the first direction X.

The first lead 1120 may be provided in plurality. For example, the first leads 1120 may be provided in 3 and spaced apart from each other. Power of different polarities may be applied to the plurality of first leads 1120.

Leads 1120, 1180, and 1190 may include a second lead 1180 and a third lead 1190. Each of the second and third leads 1180, 1190 may be disposed to extend outwardly from the core 1110. Each of the second and third leads 1180 and 1190 may have an area that is bent at least once and more. The second and third leads 1180 and 1190 may have different shapes. For example, the cross-sectional area of the second lead 1180 may be smaller than the cross-sectional area of the third lead 1190. The second and third leads 1180 and 1190 may be coupled to the printed circuit board 1600 (see fig. 15), which will be described later. The second and third leads 1180 and 1190 may be mounted on the printed circuit board 1600.

Each of the second and third leads 1180 and 1190 may be provided in plurality and disposed spaced apart from each other.

The connector 1200 is spaced apart from the electronic component 1100 in the first direction X and may be connected to the electronic component 1100 by a first lead 1120. The connector 1200 may include a body forming an external shape and a connector terminal 1250 disposed within the body.

The body is made of a plastic material and may form the outer shape of the connector 1200. The body may be referred to as a housing because it internally houses the connector terminals 1250. The body may include a first body 1210 and a second body 1220 extending from one surface of the first body 1210. The body may be made of a plastics material.

Fig. 8 and 9 show the upper and lower surfaces of the electronic component module 120, which are interchanged for ease of illustration. As shown in fig. 14 and 15, the second body 1220 may be formed to protrude downward from a lower surface of the first body 1210 with respect to the motor.

The first body 1210 may have a rectangular cross-sectional shape. At least a portion of the first body 1210 may be disposed to overlap the core 1110 in the first direction X. The connector terminal 1250 is coupled with the second coupling hole 1213, and the second coupling hole 1213 may be formed on the upper surface of the first body 1210. The second coupling hole 1213 extends downward from the upper surface of the first body 1210 and may communicate with a space within the second body 1220, which will be described later.

The first lead 1120 may be coupled to a side surface of the first body 1210. The first lead 1120 may penetrate a side surface of the first body 1210, and at least a portion of the first lead 1120 may be disposed in a space within the first body 1210. At least a portion of the extension 1122 of the first lead 1120 and the coupling 1124 may penetrate a side surface of the first body 1210 and be disposed within the first body 1210. When the first lead 1120 is coupled to the first body 1210, the first coupling hole 1126 of the coupling portion 1124 may be disposed to overlap the second coupling hole 1213.

The body may be integrally formed with the first lead 1120 by insert injection. In other words, the electronic component 1100 and the connector 1200 may be understood as being integrally formed by insert injection molding.

The second body 1220 protrudes downward from a lower surface of the first body 1210 and is capable of accommodating at least a portion of the connector terminal 1250 therein. A space may be formed in the second body 1220 to accommodate the connector terminal 1250 and the terminal 1330 (see fig. 14 and 15), which will be described later. The lower surface of the space within the second body 1220 may be open to allow a terminal 1330 (which will be described later) to be coupled thereto.

The space may include a first space 1221 to which at least a portion of connector terminal 1250 is coupled and a second space 1222 to which terminal 1330 is coupled. Due to the first space 1221 and the second space 1222, the space or cross-sectional shape of the second body 1220 may be formed in a "+" shape, i.e., a cross shape. The length direction of the first space 1221 may be defined as the second direction Y, and the length direction of the second space 1222 may be defined as the first direction X. The first space 1221 and the second space 1222 are connected to each other at the center, and may be disposed to cross each other. The first space 1221 and the second space 1222 may be disposed perpendicular to each other.

The length of the connector terminal 1250 in the second direction Y may correspond to the length of the first space 1221 in the first direction Y. The length of the terminal 1330 in the first direction X may correspond to the length of the second space 1222 in the first direction X.

The first and second protrusions 1226 and 1225 may be formed on side surfaces of the second body 1220. The plurality of first protrusions 1226 are provided and may be disposed to face each other in the second direction Y. The plurality of second protrusions 1225 are provided and may be disposed to face each other in the first direction X. The first protrusion 1226 is understood as a region in which the first space 1221 is formed, and the second protrusion 1225 is understood as a region in which the second space 1222 is formed.

A plurality of second bodies 1220 may be disposed corresponding to the number of first leads 1120. The plurality of second bodies 1220 may be disposed to be spaced apart from each other at a lower portion of the first body 1210.

The connector terminal 1250 may be disposed within the body. At least a portion of the connector terminal 1250 may be disposed within the first body 1210 and the remaining portion may be disposed in the second body 1220. The connector terminal 1250 may be coupled to penetrate the first coupling hole 1126 in the first lead 1120. The connector terminal 1250 may be disposed perpendicular to the first lead 1120.

As shown in fig. 13, the connector terminal 1250 may include a first terminal 1252 and a second terminal 1254. The first terminal 1252 and the second terminal 1254 may form a pair of terminals that are connected to each other at one end and spaced apart from each other at the other end. The partition S is formed between the first terminal 1252 and the second terminal 1254, and the first terminal 1252 and the second terminal 1254 may be disposed to face each other with respect to the partition S.

At one end of the connector terminal 1250 (i.e., one end at which the first terminal 1252 and the second terminal 1254 are connected to each other), an expansion portion 1257 protruding from a side surface thereof may be formed. The width of the expansion 1257 may be greater than the width of other regions within the connector terminal 1250. The width of the expansion 1257 may be greater than the width of the first coupling hole 1126.

The expansion 1257 may be disposed within the first body 1210. The expansion 1257 may be provided at an upper portion of the coupling portion 1124 of the first lead 1120 (see fig. 15). At least a portion of the expansion portion 1257 may be provided to overlap the partition portion S in the horizontal direction.

The contact portion 1253 may be formed at the other end of the connector terminal 1250 (i.e., the end at which the first terminal 1252 and the second terminal 1254 are spaced apart from each other). The contact portion 1253 may be formed to protrude inward from an inner surface of the first terminal 1252 and the second terminal 1254 facing each other. The region of the first terminal 1252 and the second terminal 1254 where the contact portion 1253 is formed may be formed wider than other regions. The contact portion 1253 may contact an outer surface of the terminal 1330 (see fig. 14 and 15).

The first terminal 1252 and the second terminal 1254 may have elastic force in a direction in which the other ends where the contact portions 1253 are formed are closer to each other.

According to the above-described structure, since the electronic component 1100 and the connector 1200 for electrically connecting with other components in the motor are formed as one body, there is an advantage in that the production efficiency is improved by reducing the assembly man-hour. Further, since the terminal and the connector terminal are disposed to overlap each other within a single body, there is an advantage in that the motor size can be reduced as compared with the related art.

Fig. 14 and 15 are diagrams illustrating an assembly process of a bus module and an electronic component module according to a second embodiment of the present invention.

Referring to fig. 14 and 15, the motor according to the second embodiment of the present invention may include a housing, a stator disposed within the housing, and a rotor disposed within the stator. The coil is wound around the stator, and a magnet facing the coil is provided in the rotor so that the rotor can rotate due to electromagnetic interaction between the coil and the magnet.

The bus module 1300 may be disposed on a stator. The bus module may include: a bus body 1301; a plurality of bus bars 1310 protruding from an outer surface of the bus bar body 1301 and to which the coils 1400 of the stator are connected; and a terminal 1330 provided on the bus body 1301 and electrically connecting the plurality of buses 1310 and the electronic component module 20. Since three-phase power is applied to the coils, three terminals 1330 may be provided according to the number of power sources. Thus, when the electronics module 20 is coupled with the bus module 1300, current may be input and output from the electronics module 1100 to the coil.

The printed circuit board 1600 may be disposed at an upper portion of the bus module 1300, and the printed circuit board 1600 may include a hole 1610 through which the second body 1220 of the electronic component module 20 may pass.

When the electronic component module 20 is coupled to the bus module 1300, the terminal 1330 may be coupled to the second body 1220. The terminal 1330 may be introduced into a space within the second body 1220 through an opening at a lower surface of the second body 1220.

The terminal 1330 may be coupled to the second space 1222 within the second body 1220. Within the second body 1220, the terminals 1330 may be disposed to intersect the connector terminals 1250 disposed within the first space 1221. The terminal 1330 may be disposed perpendicular to the connector terminal 1250. Terminal 1330 may be coupled to a partition S of connector terminal 1250. The terminal 1330 may be disposed between the first terminal 1252 and the second terminal 1254. The contact portions 1253 may contact both sides of the terminal 1330, respectively. The terminal 1330 may be disposed under the first lead 1120.

Thus, according to an embodiment of the present invention, the connector terminal 1250 for the electrical connection between the electronic component 1100 and the coil is implemented as a female connector structure, and the terminal 1330 is implemented as a male connector structure, so that the bus module 1300 and the electronic component module 20 can be complementarily coupled.

In the above description, it is described that all the components constituting the embodiments of the present invention are combined or operated in one body, but the present invention is not necessarily limited to these embodiments. In other words, all components may be selectively operated in combination with one or more components within the scope of the present invention. Furthermore, the terms "comprising," "including," or "having," as described above, mean that the corresponding components may be inherent, unless otherwise specifically noted, and should be construed as not excluding other components, but rather should also include other components. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art unless defined otherwise. Terms commonly used, such as terms defined in dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The above description is only for the purpose of illustrating the technical idea of the present invention, and various modifications and changes can be made by those skilled in the art to which the present invention pertains without departing from the essential features of the present invention. Accordingly, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but rather describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of the invention should be construed by the appended claims, and all technical ideas within the equivalent scope should be construed to be included in the scope of the invention.

Claims (10)

1. An electric machine, comprising:

a base;

a first bus coupled to the base and including a first body and a first coupling portion extending from the first body;

a second bus disposed outside the first bus and including a second body and a second coupling portion extending from the second body; and

a third bus disposed outside the second bus and including a third body and a third coupling portion extending from the third body,

wherein the first coupling portion does not overlap the second body and the third body in the axial direction, and

wherein the second coupling portion does not overlap the third body in the axial direction.

2. An electric machine according to claim 1,

wherein the upper surfaces of the first body, the second body, and the third body are disposed on the same plane.

3. An electric machine according to claim 1,

wherein each of the first to third bodies has a width greater than a height thereof.

4. An electric machine according to claim 1,

wherein the height of the first body to the third body is 5mm or less.

5. An electric machine according to claim 1,

wherein the first to third bodies are formed in a closed shape.

6. An electric machine according to claim 1,

wherein the second body includes a region overlapping the first coupling portion in a circumferential direction when viewed from above.

7. An electric machine according to claim 1,

wherein the second bus is disposed between the first bus and the third bus.

8. An electric machine according to claim 1,

wherein a guide is provided on the upper surface of the base, the guide protrudes more upward than other areas, and

wherein the first bus includes a guide bore, the guide being coupled to the guide bore.

9. An electric machine according to claim 8,

wherein the upper surface of the guide forms the same plane as the upper surface of the first bus bar, the upper surface of the second bus bar, and the upper surface of the third bus bar.

10. An electric machine according to claim 1,

wherein each of the first coupling portion, the second coupling portion, and the third coupling portion includes: a hole through which the coil penetrates; and a protrusion to which the coil is coupled.