阅读说明：本技术 马达 (Motor ) 是由 郑永焕 于 2019-10-22 设计创作，主要内容包括：本发明提供了一种马达,该马达包括：壳体；定子,该定子布置在壳体中；转子,该转子布置在定子中；轴,该轴联接至转子；汇流条,该汇流条布置在定子的上部部分上；以及端子部分,该端子部分连接至汇流条。汇流条包括汇流条本体和布置在汇流条本体上的多个第一端子。端子包括端子本体和布置在端子本体上的第二端子。第一端子的第一端部部分与第二端子的第二端部部分彼此接触,汇流条本体包括第一联接部分,并且端子本体包括第二联接部分,其中,第一联接部分布置在第一端部部分之间,并且第二联接部分布置在第二端部部分之间。(The present invention provides a motor, including: a housing; a stator disposed in the housing; a rotor disposed in the stator; a shaft coupled to the rotor; a bus bar disposed on an upper portion of the stator; and a terminal portion connected to the bus bar. The bus bar includes a bus bar body and a plurality of first terminals disposed on the bus bar body. The terminal includes a terminal body and a second terminal disposed on the terminal body. The first end portions of the first and second terminals are in contact with each other, the bus bar body includes first coupling portions, and the terminal body includes second coupling portions, wherein the first coupling portions are disposed between the first end portions and the second coupling portions are disposed between the second end portions.)

1. A motor, comprising:

a housing;

a stator disposed in the housing;

a rotor disposed in the stator;

a shaft connected to the rotor;

a bus bar disposed above the stator; and

a terminal portion connected to the bus bar,

wherein the bus bar includes a bus bar body and a plurality of first terminals provided on the bus bar body,

the terminal portion includes a terminal body and a second terminal provided on the terminal body,

the first end portion of the first terminal is in contact with the second end portion of the second terminal,

the bus bar body includes a first coupling part,

the terminal body includes a second coupling portion,

the first coupling portion is disposed between the first end portions, and

the second coupling portion is disposed between the second end portions.

2. The motor according to claim 1, wherein the first coupling portion and the second coupling portion are provided so as to overlap in a circumferential direction based on the shaft.

3. The motor of claim 2, wherein:

the busbar includes a plurality of guides extending upwardly from an upper surface of the busbar body and surrounding a portion of the first terminal;

the plurality of guides are disposed to be spaced apart from each other in the circumferential direction; and is

The first coupling portion includes a hole formed by the plurality of guides disposed to be spaced apart from each other.

4. The motor of claim 3, wherein:

the terminal portion includes a protrusion extending downward from a lower surface of the terminal body; and is

The second coupling portion includes the protrusion.

5. A motor, comprising:

a housing;

a stator disposed in the housing;

a rotor disposed in the stator;

a shaft coupled to the rotor;

a bus bar disposed above the stator; and

a terminal portion connected to the bus bar,

wherein the bus bar includes a bus bar body and a plurality of first terminals provided on the bus bar body,

the terminal portion includes a terminal body and a plurality of second terminals provided on the terminal body,

a first end portion of the first terminal is in contact with a second end portion of the second terminal, and

the bus bar body is fitted to the terminal body in an axial direction.

6. A motor, comprising:

a stator;

a rotor disposed in the stator;

a shaft coupled to the rotor;

a bus bar disposed above the stator; and

a terminal portion connected to the bus bar,

wherein the terminal portion includes a terminal body and a third terminal provided on the terminal body,

the bus bar includes a bus bar body and a plurality of fourth terminals provided on the bus bar body,

at least one of the plurality of third terminals includes a terminal end and an insulating member surrounding a portion of the terminal end,

the terminal end portion passes through the terminal body, and

the insulating member is coupled to the terminal body.

7. The motor of claim 6, wherein the height of the end portion of the at least one third terminal is different from the height of the end portion of another adjacent third terminal.

8. The motor of claim 6, wherein:

the plurality of third terminals include fusion-bonded portions fused to the plurality of fourth terminals; and is

The heights of the welded portions adjacent to each other are different.

9. The motor of claim 6, wherein:

the number of the plurality of third terminals is three;

the lengths of the third terminals disposed at both sides of the third terminal are the same in the axial direction; and is

A length of the third terminal disposed at a center of the third terminal is longer in the axial direction than lengths of the third terminal disposed at both sides of the third terminal.

10. The motor of claim 6, wherein the terminal end comprises:

a first region in contact with the insulating member;

a second region extending from the first region and having an end portion welded to the fourth terminal; and is

The lengths of the second regions adjacent to each other are different in the axial direction.

Technical Field

The present invention relates to a motor.

Background

An Electronic Power Steering (EPS) system ensures steering stability and provides a quick restoring force so that a driver can safely drive. Such an EPS system controls driving of a steering shaft of a vehicle by driving a motor using an Electronic Control Unit (ECU) according to a driving state detected by a vehicle speed sensor, a torque angle sensor, a torque sensor, and the like.

The motor includes a stator and a rotor. The stator may include a stator core and a coil wound around teeth of the stator core. The stator may include a plurality of stator cores. In addition, the coil may be wound around the stator core.

The separate coils are connected by a bus bar. The bus bar is connected to a terminal portion connected to an external power supply. The bus bar and the terminal portion may be integrally designed. However, when the length of the terminal portion is long, there are problems in that it is difficult to form the terminal portion by an injection molding process and it is difficult to arrange the position of the terminal portion. In addition, when the terminal of the bus bar and the terminal of the terminal portion are integrally formed, there is a problem in that a large amount of scrap is generated in the process of forming the terminal.

In addition, the terminal portion extends longer in the axial direction. Therefore, there arises a problem in that the terminal portion may be bent or the positional accuracy of the terminal portion is insufficient.

In addition, in the process of welding the terminal of the terminal portion with the terminal of the bus bar, there are problems in that workability is deteriorated because a welding space is not sufficiently secured, and welding quality is deteriorated due to interference between components.

Disclosure of Invention

Technical problem

The present invention aims to provide a motor comprising: the motor allows positional arrangement of the terminal portion connected to the bus bar to be easy, and allows the amount of scrap to be reduced when manufacturing the terminal.

The present invention is also directed to a motor comprising: the positional accuracy of the terminal portion of the motor is improved, and the welding quality of the terminals is improved.

The object to be solved by the present invention is not limited to the above object, and other objects not described above will be clearly understood by those skilled in the art from the following description.

Technical scheme

One aspect of the present invention provides a motor, including: a housing; a stator disposed in the housing; a rotor disposed in the stator; a shaft coupled to the rotor; a bus bar disposed above the stator; and a terminal portion connected to the bus bar, wherein the bus bar includes a bus bar body and a plurality of first terminals provided on the bus bar body, the terminal portion includes a terminal body and second terminals provided on the terminal body, first end portions of the first terminals are in contact with second end portions of the second terminals, the bus bar body includes first coupling portions, the terminal body includes second coupling portions, the first coupling portions are provided between the first end portions, and the second coupling portions are provided between the second end portions.

The first coupling portion and the second coupling portion may be provided to overlap in a shaft-based circumferential direction.

The bus bar may include a plurality of guides extending upward from an upper surface of the bus bar body and surrounding a portion of the first terminal, the plurality of guides may be disposed to be spaced apart from each other in a circumferential direction, and the first coupling part may include a hole formed by the plurality of guides disposed to be spaced apart from each other.

The terminal portion may include a protrusion extending downward from a lower surface of the terminal body, and the second coupling portion may be the protrusion.

The bus bar body may include a third coupling part, the terminal body may include a fourth coupling part, and the third coupling part may be coupled to the fourth coupling part using a coupling member.

Another aspect of the present invention provides a motor including: a housing; a stator disposed in the housing; a rotor disposed in the stator; a shaft coupled to the rotor; a bus bar disposed above the stator; and a terminal portion connected to the bus bar, wherein the bus bar includes a bus bar body and a plurality of first terminals provided on the bus bar body, the terminal portion includes a terminal body and a plurality of second terminals provided on the terminal body, the first end portion of the first terminal is in contact with the second end portion of the second terminals, and the bus bar body is fitted to the terminal body in an axial direction.

The bus bar may include first bosses provided at both sides of the first end portion and protruding upward from an upper surface of the bus bar body, the terminal portion may include second bosses provided at both sides of the second end portion and extending in a circumferential direction from the terminal body, and the first bosses and the second bosses may overlap in an axial direction.

The first boss and the second boss may include coupling holes, and the first boss and the second boss may further include coupling members disposed in the coupling holes to couple the first boss and the second boss.

Yet another aspect of the present invention provides a motor, including: a stator; a rotor disposed in the stator; a shaft coupled to the rotor; a bus bar disposed above the stator; and a terminal portion connected to the bus bar, wherein the terminal portion includes a terminal body and a third terminal provided on the terminal body, the bus bar includes a bus bar body and a plurality of fourth terminals provided on the bus bar body, at least one third terminal of the plurality of third terminals includes a terminal end and an insulating member surrounding a portion of the terminal end, the terminal end passes through the terminal body, and the insulating member is coupled to the terminal body.

The height of the end portion of the at least one third terminal may be different from the height of the end portion of another adjacent third terminal.

The plurality of third terminals may include welded portions welded to the plurality of fourth terminals, and the welded portions adjacent to each other may have different heights.

The side surface of the terminal end may be a flat surface, and the welding portion may be formed on the lower side surface of the terminal end.

The plurality of third terminals may include first stepped portions on the side surfaces.

The plurality of third terminals may be three in number, the lengths of the third terminals disposed at both sides thereof may be the same in the axial direction, and the length of the third terminal disposed at the center thereof may be longer in the axial direction than the lengths of the third terminals disposed at both sides thereof.

The terminal end portion may include: a first region that is in contact with the insulating member, a second region that extends from the first region and whose end portion is welded to the fourth terminal, and lengths of the second regions adjacent to each other are different in an axial direction.

A width of a portion of the first region may be greater than a width of a portion of the second region.

The second step portion may be formed in the first region or the second region, and the terminal body or the insulating member may include a support contacting the second step portion to support the third terminal.

The bus bar body may include a neck portion connecting the bus bar body and the terminal body.

The terminal body and the bus bar body may not overlap in the axial direction.

The terminal body and the bus bar body may not overlap in a radial direction.

The material of the terminal body may be the same as that of the insulating member.

The bus bar body may further include a sealing member disposed between the terminal body and the insulating member.

Advantageous effects

According to the embodiment, there is provided an advantageous effect that the positional arrangement of the terminal portion is facilitated and the terminal portion can be accurately set.

Since the terminals of the bus bar and the terminals of the terminal portion are molded separately, an advantageous effect of significantly reducing the amount of scrap is provided when manufacturing the terminals.

There is provided an advantageous effect of facilitating the assembly of the bus bar and the terminal portion.

There is provided an advantageous effect that the coupling force of the bus bar and the terminal portion is high.

Since the bus bar body and the insulating member are separately formed, the positional accuracy of the terminal end can be improved, and this is advantageous for managing the size of the bus bar.

There is an advantage in that the amount of waste can be reduced when the pressing process of the bus bar body is performed.

Since the welding structure of the terminal ends is improved, a space for a welding operation between the terminal ends is secured, and thus workability can be improved, and welding quality of the bus bar can be improved.

Drawings

Fig. 1 is a view illustrating a motor according to an embodiment.

Fig. 2 is a view illustrating a bus bar and a terminal portion.

Fig. 3 is a view illustrating a terminal of a bus bar.

Fig. 4 is a view illustrating a bus bar including a guide.

Fig. 5 is a view illustrating a bus bar including a hole as a first coupling portion.

Fig. 6 is a view illustrating a guide.

Fig. 7 is a view illustrating a terminal portion.

Fig. 8 is a view illustrating a lower surface of the terminal portion of fig. 7.

Fig. 9 is a view illustrating the second end portion of the second terminal and the grooves and projections of the terminal body.

Fig. 10 is a view illustrating a coupled state of the bus bar and the terminal portion.

Fig. 11 is a perspective view illustrating bus bars and terminal portions of a motor according to another embodiment.

Fig. 12 is an exploded perspective view illustrating the motor shown in fig. 11.

Fig. 13 is a side view illustrating the bus bar and the terminal portion shown in fig. 11.

Fig. 14 is a perspective view illustrating a welded portion of the second terminal and the terminal end portion.

Fig. 15 is a cross-sectional view illustrating the terminal end and the insulating member.

Fig. 16 is a perspective view illustrating a terminal end portion.

Fig. 17 is a cross-sectional view illustrating a terminal end portion.

Fig. 18 is a cross-sectional view illustrating a coupled state of the first pipe and the insulating member.

Fig. 19 is a side view illustrating the neck portion and the terminal body.

Fig. 20 is a side view illustrating the bus bar body and the terminal body.

Fig. 21 is a view illustrating the height of the end portion of the terminal end.

Fig. 22 is a cross-sectional view illustrating a second example of the terminal end portion and the insulating member.

Fig. 23 is a cross-sectional view illustrating a third example of the terminal end portion and the insulating member.

Detailed Description

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

However, the technical spirit of the present invention is not limited to some embodiments to be described, and may be implemented using various other embodiments, and at least one component of the embodiments may be selectively coupled, substituted and used to implement the technical spirit within the scope of the technical spirit.

In addition, unless the context clearly and clearly defines otherwise, all terms (including technical and scientific terms) used herein may be interpreted as having meanings that are customary to those skilled in the art, and meanings of commonly used terms such as those defined in commonly used dictionaries will be interpreted by considering the contextual meanings of the related art.

In addition, the terms used in the embodiments of the present invention are considered in a descriptive sense and not for the purpose of limiting the invention.

In this document, the singular includes the plural unless the context clearly indicates otherwise, and where the description "A, B and at least one (or one or more) of C" is stated, this may include at least one of all possible combinations of A, B and C.

In addition, in the description of the components of the present invention, terms such as "first", "second", "a", "B", "a", and "(B)" may be used.

These terms are only for distinguishing one element from another element, and the nature, order, etc. of the elements are not limited by the terms.

In addition, it will be understood that, when an element is referred to as being "connected" or coupled to another element, such description may include the case where the element is directly connected or coupled to the other element and the case where the element is connected or coupled to the other element through another element disposed between the element and the other element.

In addition, where any one element is described as being formed or disposed "on or under" another element, such description includes both cases: two elements will be formed or disposed in direct contact with each other and one or more other elements will be disposed between the two elements. In addition, when one element is described as being disposed "on" or "under" another element, such description may include the case where one element is disposed at an upper side or a lower side with respect to the other element.

Fig. 1 is a view illustrating a motor according to an embodiment. Referring to fig. 1, a motor according to an embodiment may include a housing 400, a shaft 100, a rotor 200, and a stator 300. The stator 300 is disposed in the housing 400, the rotor 200 is disposed in the stator 300, and the rotor 200 is disposed outside the shaft 100. In this case, the term "inside" refers to a direction toward the shaft 100 of the motor, and the term "outside" refers to a direction toward the housing 400 from the shaft 100, opposite to the term "inside".

The shaft 100 may be coupled to the rotor 200. When current is supplied, electrical interaction occurs between the rotor 200 and the stator 300, the rotor 200 rotates, and the shaft 100 rotates as the rotor 200 rotates. The shaft 100 may be connected to a steering device of a vehicle to transmit power to the steering device.

The rotor 200 rotates due to electrical interaction with the stator 300.

The rotor 200 may be disposed inside the stator 300. The rotor 200 may include a rotor core and a magnet disposed on the rotor core.

The stator 300 is disposed outside the rotor 200. The stator 300 may include a stator core 310, an insulator 320, and a coil 330. The insulator 320 is mounted on the stator core 310. The coil 330 is wound around the insulator 320. The coils cause electrical interaction with the magnets of the rotor 200.

The rotor 200 and the stator 300 are accommodated in the housing 400.

The bus bar 500 is disposed above the stator 300. The bus bar 500 connects the coil to the stator 300.

A terminal portion 600 (see fig. 2) is connected to the bus bar 500. In addition, the terminal portion 600 is connected to an external power supply.

Fig. 2 is a view illustrating a bus bar and a terminal portion. Fig. 3 is a view illustrating a terminal of a bus bar.

Referring to fig. 2, the bus bar 500 may include a bus bar body 510 and a first terminal 520. The bus bar body 510 may be a member having a ring shape. The first terminal 520 is disposed on the bus bar body 510. The first terminal 520 may be a phase terminal.

The terminal portion 600 may include a terminal body 610 and a second terminal 620 disposed on the terminal body 610.

Referring to fig. 2 and 3, a plurality of first terminals 520 may be provided, and three first terminals 520 may be formed to realize a U-phase, a V-phase, and a W-phase. In this case, the first terminal 520 may include a first end portion 521. In this case, the first end portion 521 refers to an end portion of the first terminal 520 extending in a radial direction to be in contact with the second terminal 620. In addition, three second terminals 620 may also be formed to apply power having a U-phase, a V-phase, and a W-phase to correspond to the first terminal 520, and the second terminals 620 may include a second end portion 621. The second end portion 621 refers to an end portion of the second terminal 620 contacting the first end portion 521.

The bus bar 500 and the terminal portion 600 may be assembled by coupling the first coupling portion and the second coupling portion.

In addition, the bus bar 500 and the terminal portion 600 may be coupled by coupling the third coupling portion and the fourth coupling portion. The first coupling portion may be fitted to the second coupling portion in the axial direction. The third coupling portion may be coupled to the fourth coupling portion using a coupling member 700.

Fig. 4 is a view illustrating a bus bar including a guide, and fig. 5 is a view illustrating a bus bar including a hole as a first coupling part.

Referring to fig. 4 and 5, the bus bar body 510 may include a hole 530 as a first coupling portion. The holes 530 are disposed between the guides 540. The holes 530 correspond to spaces between the guides 540. The hole 530 is provided in the axial direction. The guide 540 extends upward from the upper surface of the bus bar body 510 and is disposed to surround a portion of the first end portion 521 to correspond to the shape of the first end portion 521 of the first terminal 520. An end of the first end portion 521 is exposed to be connected to the second end portion 621.

The hole 530 may be disposed between the first end portions 521 in the circumferential direction based on the center C of the bus bar 500. For example, three first end portions 521 may be provided and one hole 530 may be provided between two first end portions 521, so that a total of two holes 530 may be provided between the three first end portions 521.

Fig. 6 is a view illustrating a guide.

Referring to fig. 6, the guide 540 may include a first portion 541 and a second portion 542. The first portion 541 may protrude from an upper surface of the bus bar body 510. The second portion 542 may be bent from the first portion 541 and extend outward in a radial direction of the bus bar 500. The second coupling portion of the terminal body 610 is fitted into the hole 530 formed between the second portions 542 to be disposed in the hole 530. The bus bar body 510 may include a third coupling portion. The bus bar body 510 may include a first boss 550, and the first boss 550 includes a coupling hole as a third coupling part. The first bosses 550 may be provided at both sides of the guide 540. The first boss 550 may protrude from the upper surface of the bus bar body 510.

Fig. 7 is a view illustrating a terminal portion, and fig. 8 is a view illustrating a lower surface of the terminal portion of fig. 7.

Referring to fig. 7 and 8, the terminal portion 600 may include a terminal body 610 and a second terminal 620. The terminal body 610 may be formed to extend in a longitudinal direction. The second terminal 620 is disposed on the terminal body 610. The second terminal 620 may be formed to extend in the longitudinal direction. An end of the second end portion 621 of the second terminal 620 is exposed to the outside of the terminal body 610. This is for connection to the first end portion 521.

The terminal body 610 includes a protrusion 630 as a fourth coupling portion. The protrusion 630 is disposed in the recess 640. The groove 640 is provided in the lower end portion of the terminal body 610. The groove 640 is fitted to the guide 540 of the bus bar body 510. A plurality of projections 630 may be provided. The number of projections 630 may correspond to the number of holes 530. The protrusion 630 may be fitted to the hole 530 of the bus bar body 510.

Fig. 9 is a view illustrating the second end portion of the second terminal and the grooves and projections of the terminal body.

Referring to fig. 5 and 9, the protrusion 630 may be disposed between the second end portions 621 in a circumferential direction. In addition, the protrusion 630 may be disposed between the first end portions 521 in a state where the bus bar body 510 and the terminal body 610 are coupled. In addition, in a state where the bus bar body 510 and the terminal body 610 are coupled, the groove 640 may be disposed between the second end portions 621 in the circumferential direction.

When the protrusion 630 is fitted to the hole 530 of the bus bar body 510, the protrusion 630 and the groove 640 overlap in the circumferential direction. In addition, when the protrusion 630 is fitted to the hole 530 of the bus bar body 510, the second end portion 621 is in contact with the first end portion 521. The terminal body 610 may include a fourth coupling portion. The terminal body 610 may include a second boss 650, and the second boss 650 includes a coupling hole as a fourth coupling part. The second bosses 650 may be disposed at both sides of the groove 640.

Fig. 10 is a view illustrating a coupled state of the bus bar and the terminal portion.

Referring to fig. 5, 9 and 10, the bus bar body 510 is fitted to the terminal body 610 in the axial direction. The projections 630 enter the holes 530 between the guides 540. Although the bus bar body 510 and the terminal body 610 are separate members, since the bus bar body 510 is fitted to the terminal body 610, their assembly is easy. In addition, since the protrusion 630 is fitted to the hole 530 between the guides 540 along the side wall of the guide 540 including the first end portion 521, there is an advantage in that the positional arrangement of the second terminal 620 is facilitated. Specifically, since the holes 530 are provided between the first end portions 521 and the protrusions 630 are provided between the second end portions 621, there is an advantage in that the plurality of first end portions 521 are accurately in contact with the plurality of second end portions 621.

In a state where the protrusion 630 is inserted into the hole 530, the coupling hole of the first boss 550 and the coupling hole of the second boss 650 are aligned. The first boss 550 and the second boss 650 are coupled using a coupling member 700 such as a bolt. The first bosses 550 are coupled to the second bosses 650 to increase the coupling force of the bus bar 500 to the terminal portion 600. When it is considered that the terminal portion 600 is disposed to extend in the axial direction, the coupling of the first bosses 550 with the second bosses 650 improves the structural stability of the terminal portion 600, and is advantageous for the position where the terminal portion 600 is disposed.

Fig. 11 is a perspective view illustrating a bus bar and a terminal portion of a motor according to another embodiment, fig. 12 is an exploded perspective view illustrating the motor illustrated in fig. 11, fig. 13 is a side view illustrating the bus bar and the terminal portion illustrated in fig. 11, and fig. 14 is a perspective view illustrating a welded portion of a second terminal and a terminal end.

Referring to fig. 11 and 12, a plurality of third terminals 1411 are provided. The plurality of third terminals 1411 may be disposed in an axial direction. For example, three third terminals 1411 may be provided. In this case, the lengths of the three third terminals 1411 may be the same or different. The lengths of the third terminals 1411 disposed at both sides thereof may be the same in the axial direction. However, the length of the third terminal 1411 disposed at the center thereof may be longer in the axial direction than the length of the third terminal 1411 disposed at both sides thereof. In this case, the length of the third terminal 1411 may be 100mm to 130 mm.

Referring to fig. 12 to 14, the third terminal 1411 may include a terminal end 4111 and an insulating member 4112.

The terminal end portions 4111 may be arranged in the axial direction. In this case, the terminal end 4111 may be connected to a power supply having a U-phase, a V-phase, and a W-phase. In addition, the other side of the terminal end 4111 may be connected to the fourth terminal 1412. In addition, the terminal end portion 4111 may be formed in a rod shape having a quadrangular cross section. The outer surface of the terminal end 4111 may include a plurality of flat surfaces. In this case, a welded portion 4111f welded to the fourth terminal 1412 may be formed on the lower side surface of the terminal end 4111.

Fig. 15 is a cross-sectional view illustrating the terminal end and the insulating member, fig. 16 is a perspective view illustrating the terminal end, and fig. 17 is a cross-sectional view illustrating the terminal end.

Referring to fig. 15, the terminal end 4111 may include a first region 4111a, a second region 4111b, and a third region 4111 c.

The first region 4111a is in contact with the insulating member 4112. In this case, the first region 4111a and the insulating member 4112 may be coupled in a plug-in manner.

The second region 4111b extends from the first region 4111a in a direction toward one side. In this case, the width of the first region 4111a may be greater than the width of the second region 4111 b. In addition, the second region 4111b passes through the terminal body 1422. In this case, an end portion of the second region 4111b may be exposed to the second body 422. In addition, a welded portion 4111f may be formed on an end portion of the second region 4111 b. In this case, the length of at least one second region 4111b may be different from the length of another adjacent second region 4111 b. That is, the heights of the end portions of the third terminals 1411 may be different from each other to correspond to a length difference Δ d between at least one second region 4111b and another adjacent second region 4111 b.

The region 4111c extends from the first region 4111a in a direction toward the other side. The third region 4111c is connected to a power supply having a U-phase, a V-phase, and a W-phase. In this case, the width of the third region 4111c may be greater than the width of the first region 4111 a.

Referring to fig. 16 and 17, each of the terminal ends 4111 may include at least one first stepped portion 4111 s. In this case, the terminal end 4111 may include a stepped portion 4111s on a side surface thereof. In this case, a protruding region is formed at the central portion of the terminal end 4111, so that a stepped portion 4111s may be formed. In the terminal end 4111, stress is concentrated at the stepped portion 4111s, and flatness can be improved.

Referring to fig. 15, an insulating member 4112 surrounds a portion of the terminal end 4111. In this case, the insulating member 4112 may be in contact with the first region 4111 a. The insulating member 4112 may be integrally formed with the terminal end 4111 in an insert injection manner. In this case, a plurality of insulating members 4112 may be formed. For example, three insulating members 4112 may be formed to correspond to the number of terminal ends. In addition, an insulating member 4112 may be coupled to the terminal body 1422. In this case, the insulating member 4112 may be provided on the terminal body 1422 in the axial direction.

The fourth terminal 1412 is disposed below the third terminal 1411. In this case, the fourth terminal 1412 may be connected to the coil 330. A plurality of fourth terminals 1412 may be provided. For example, three fourth terminals 1412 may be formed. The three fourth terminals 1412 may be arranged in a ring shape. In this case, the fourth terminal 1412 may be in contact with an end portion of the terminal end 4111. The second welding portion 412f welded to the terminal end 4111 may be formed at one side of the plurality of fourth terminals 1412.

Fig. 18 is a cross-sectional view illustrating a coupled state of the first tube and the insulating member, fig. 19 is a side view illustrating the neck portion and the terminal body, and fig. 20 is a side view illustrating the bus bar body and the terminal body.

Referring to fig. 13, the motor may include a bus bar body 1421, a terminal body 1422, a neck 1424, and a sealing member 1425.

The bus bar body 1421 is disposed on the stator 300. The bus bar body 1421 is formed in a ring shape. A plurality of fourth terminals 1412 are provided in the bus bar body 1421. The bus bar body 1421 is connected to the terminal body 1422.

The terminal body 1422 is provided on the bus bar body 1421 in the axial direction. The terminal body 1422 may include a plurality of first tubes. The plurality of first tubes 4221 may include hollow portions, and the terminal end portions 4111 may pass through the hollow portions. In this case, an end portion of the terminal end 4111 may be disposed below a lower end portion of the first tube 4221, so that the end portion of the terminal end 4111 may be exposed. In addition, an insulating member 4112 is coupled to an upper end of the first tube 4221.

Referring to fig. 12 and 18, an end portion of the insulating member 4112 may be inserted into an end portion of the first tube 4221. In this case, the diameter of the insulating member 4112 may decrease in a direction toward the end portion thereof. The end step 4112s may be formed on the insulating member 4112 to be spaced apart from an end portion of the insulating member 4112 by a predetermined length. In this case, the insulating member 4112 may be restricted from being inserted into the first tube 4221 due to the end step 4112 s.

The insulating member 4112 and the first tube 4221 are separable from each other. That is, the insulating member 4112 and the first tube 4221 are provided as separate components. As described above, since the first tube 4221 and the insulating member 4112 provided corresponding to the length of the terminal end 4111 in the axial direction are formed in a separable structure, there are advantages in that the positional accuracy of the terminal end 4111 in the bus bar body 1421 can be improved and the dimensional management thereof is facilitated.

The neck 1424 is provided on the bus bar body 1421. In this case, the neck 1424 connects the bus bar body 1421 and the terminal body 1422. The bus bar body 1421, the terminal body 1422, and the neck 1424 may be formed of the same material. The bus bar body 1421, the terminal body 1422, and the neck 1424 may be integrally formed.

The sealing member 1425 is disposed between the insulating member 4112 and the terminal body 1422. One end portion of the sealing member 1425 may be in contact with an upper end portion of the first tube 4221. In addition, the other end portion of the sealing member 1425 may contact the end step 4112s of the insulating member 4112. In addition, a sealing member 1425 may be provided to surround a lower end portion of the insulating member 4112.

Referring to fig. 19 and 20, in the neck 1424, the upper end may be disposed outside the lower end in the radial direction. Additionally, the neck 1424 may include a first member 4241 and a second member 4242. The second member 4242 may be connected to an upper surface of the bus bar body 1421. In addition, the first member 4241 is connected to an upper portion of the second member 4242 and extends in an outer diagonal direction. Therefore, the bus bar body 1421 and the terminal body 1422 may be connected by the neck portion 1424 so as not to overlap in the axial direction and the radial direction.

Referring to fig. 20, the bus bar body 1421 and the terminal body 1422 do not overlap in the radial direction and the axial direction. In this case, a region a1 of the bus bar body 1421 in the radial direction is provided below the terminal body 1422. In addition, a region a1 of the terminal body 1422 in the axial direction is provided outside the bus bar body 1421. As described above, since the bus bar body 1421 and the terminal body 1422 are provided so as not to overlap as much as possible, a welding space of an end portion of the third terminal 1411 located below the bus bar body 1421 can be sufficiently secured, and the utilization rate of the space between the components can be improved.

Fig. 21 is a view illustrating the height of the end portion of the terminal end.

Referring to fig. 21, when it is assumed that the height of the end portion of the terminal end 4111 is the height from the lower surface of the bus bar body 1421 to the lower surface of the terminal end 4111, the height h1 of the end portion of at least one terminal end 4111 is different from the height h2 of the end portion of another adjacent terminal end 4111. In this case, the height difference Δ h between the end portions of the terminal ends 4111 adjacent to each other corresponds to the length difference Δ d between the second regions 4111b adjacent to each other described with reference to fig. 5. As described above, the height of the welded portion 4111f may be different, and the difference in height may reach the difference in height Δ h between the terminal ends 4111.

As described above, since the height difference Δ h between the welding portions 4111f is generated, the welding operation space of the terminal end 4111 and the fourth terminal 1412 is secured, and thus the welding workability can be improved, and the welding quality of the bus bar 1400 can be improved.

Hereinafter, another example of the connection structure of the terminal end and the insulating member of the present invention will be described with reference to fig. 22 and 23.

Fig. 22 is a cross-sectional view illustrating a second example of the terminal end portion and the insulating member, and fig. 23 is a cross-sectional view illustrating a third example of the terminal end portion and the insulating member.

The terminal end 4113 or 4114 and the insulating member 4115 or 4116 may be formed in a separate structure. Further, the terminal end 4113 or 4114 may be seated on the insulating member 4115 or the second body 423.

Referring to fig. 22, in the terminal end 4113, a second stepped portion 4113s may be formed in the first region. In addition, a support 4115a that contacts the second stepped portion 4113s to support the terminal end 4113 may be formed in the insulating member 4115. In this case, the supporter 4115a may have a protruding shape protruding in a direction from the inner circumferential surface of the insulating member 4115 toward the center of the insulating member 4115. The terminal end 4113 may be inserted into the insulating member 4115. In this case, the terminal end 4113 may be inserted into the support 4115a in a direction from a side opposite to the side of the support 4115a toward the side of the support 4115 a. In this case, the length from an end portion of at least one terminal end 4113 to the second step portion 4113s may be different from the length from one end portion of another adjacent terminal end 4113 to the second step portion 4113 s. In this case, the length difference Δ d may correspond to a height difference Δ h between one end portions of the terminal ends 4111 described with reference to fig. 21.

Meanwhile, referring to fig. 23, in the terminal end 4114, a second stepped portion 4114s may be formed in the second region. In addition, a support 4231 that contacts the second step portion 4114s to support the terminal end 4114 may be formed in the second body 423. In this case, the terminal end 4113 and the coupled second body 423 may be inserted into the insulating member 4116. In this case, the terminal end 4114 may be inserted into the support 4231 in a direction from a side opposite to a side of the support 4231 toward a side of the support 4231.

As described above, the motor according to one exemplary embodiment of the present invention has been described in detail with reference to the accompanying drawings.