KR20210129912A - Motor - Google Patents

Abstract

According to an embodiment, disclosed is a motor including: a housing; a stator placed in the housing; a rotor placed to be matched with the stator; a shaft combined with the rotor; a busbar placed in an upper part of the stator; and a power terminal assembly combined with the housing. The housing includes: a first area in which an opening is formed in an upper part and the stator and the rotor are placed; a second area extended from an end of the first area in a radial direction; a third area extended from an outer end of the second area in an axial direction; and a pair of first protrusions formed in the second area to protrude in an axial direction. The power terminal assembly is guided by the first protrusions to be placed between the first protrusions. Accordingly, the motor can embody a combination structure of the housing and the power terminal assembly without employing a separate coupling member, thereby preventing the power terminal assembly from departing and moving.

Description

motor {MOTOR}

The embodiment relates to a motor.

A motor is a device that obtains rotational force by converting electrical energy into mechanical energy, and is widely used in vehicles, home electronic products, industrial devices, and the like. In particular, the motor may be used in a device for ensuring the stability of steering of a vehicle. For example, the motor may be used in a vehicle motor such as an electronic power steering system (EPS).

The motor includes a housing, a cover disposed in the opening of the housing, a shaft, a stator disposed on an inner circumferential surface of the housing, a rotor disposed on an outer circumferential surface of the shaft, and a coil of the stator electrically and a bus bar connected thereto, and a power terminal assembly arranged to apply power to a terminal of the bus bar. Here, the stator induces electrical interaction with the rotor to induce rotation of the rotor.

Here, the power terminal assembly may be fixed to the housing using a fastening member such as a bolt. Accordingly, in order to fasten the fastening member, a separate machining process is required for the housing and the power terminal assembly.

Therefore, the conventional motor has a problem in that productivity decreases due to an increase in production cost and an increase in the number of assembly steps due to the fastening member.

Accordingly, there is a demand for a motor capable of implementing the process simplification of the housing and the power terminal assembly.

The embodiment provides a motor that prevents separation and flow of a power terminal through a coupling structure between a housing and a power terminal assembly without using a separate fastening member.

The problems to be solved by the embodiment are not limited to the problems mentioned above, and other problems not mentioned here will be clearly understood by those skilled in the art from the following description.

The task is a housing; a stator disposed inside the housing; a rotor disposed to correspond to the stator; a shaft coupled to the rotor; a bus bar disposed on the stator; and a power terminal assembly coupled to the housing, wherein the housing includes a first region having an opening formed therein, in which the stator and the rotor are disposed, and a second radially extending end of the first region. a region, a third region extending axially from an outer end of the second region, and a pair of first projections formed on the second region to protrude in the axial direction, wherein the power terminal assembly includes the first projection This is achieved by a motor guided by and disposed between the first projections.

Here, the housing includes a first groove concavely formed in the first protrusion, and the power terminal assembly includes a body, a plurality of power terminals disposed on the body, and a first protrusion formed to protrude from the body, , The body and the first protrusion may be integrally formed, and the first protrusion may be coupled to the first groove.

The first groove may be concavely formed on an inner surface of the first protrusion, and the first protrusion may be slidably coupled to the first groove.

In addition, the upper surface of the first protrusion may be a curved surface.

In addition, based on an imaginary line (L) connecting the center (C) of the shaft and the center (C1) between the pair of first protrusions, one surface of each of the first protrusions facing each other is the line It may be arranged parallel to (L).

In addition, one region of the first protrusion may be disposed to overlap the first protrusion in an axial direction.

Meanwhile, the power terminal assembly includes a body and a plurality of power terminals disposed on the body, and the height H1 of the first protrusion with respect to the upper surface of the second region is greater than the height H2 of the body. can be large

Here, the housing may further include a caulking portion formed to be in contact with the upper surface of the body by caulking one region of the first protrusion.

The power terminal assembly may further include a second protrusion formed to protrude from a lower surface of the body, and the second protrusion may be coupled to a second groove concave in an axial direction on the upper surface of the housing.

Meanwhile, the end of the power terminal may be coupled to the bus bar terminal of the bus bar by fusing.

In addition, the housing and the body of the power terminal assembly may be formed of different materials.

The task is a housing; a stator disposed inside the housing; a rotor disposed to correspond to the stator; a shaft coupled to the rotor; a bus bar disposed on the stator; and a power terminal assembly coupled to the housing, wherein the housing includes a first region having an opening formed therein, in which the stator and the rotor are disposed, and a second radially extending end of the first region. a region and a pair of first protrusions formed on the second region to protrude in an axial direction, wherein the power terminal assembly includes a body, a plurality of power terminals disposed on the body, and a first protrusion formed to protrude from the body It is achieved by a motor including a protrusion and sliding the first protrusion into a first groove concavely formed in the first protrusion.

The task is a housing; a stator disposed inside the housing; a rotor disposed to correspond to the stator; a shaft coupled to the rotor; a bus bar disposed on the stator; and a power terminal assembly coupled to the housing, wherein the housing includes a first region having an opening formed therein, in which the stator and the rotor are disposed, and a second radially extending end of the first region. a region and a pair of first protrusions formed on the second region to protrude in an axial direction, wherein the power terminal assembly includes a body and a plurality of power terminals disposed on the body, wherein the housing includes 1 It is achieved by a motor further comprising a caulking portion formed to be in contact with the upper surface of the body by caulking one region of the protrusion.

The embodiment implements a coupling structure between the housing and the power terminal assembly without the use of a separate fastening member to prevent separation and flow of the power terminal.

Furthermore, the fixing force of the power terminal assembly may be further improved through the coupling of the terminal of the power terminal assembly and the bus bar terminal by fusing. For example, through the coupling of the housing and the power terminal assembly and the coupling of the power terminal assembly and the bus bar, the fixability of the power terminal assembly may be further improved. In this case, the bus bar may be fixed to the upper side of the stator through coupling with the coil of the stator.

Various and advantageous advantages and effects of the embodiments are not limited to the above, and will be more easily understood in the course of describing specific embodiments of the embodiments.

1 is a view showing a motor according to an embodiment,
2 is a perspective view showing a motor according to the first embodiment;
3 is an exploded perspective view showing the motor according to the first embodiment;
Figure 4 is a cross-sectional view showing the line AA of Figure 2,
5 is a perspective view showing the housing of the motor according to the first embodiment;
6 is a plan view showing the housing of the motor according to the first embodiment;
7 is a view showing the power terminal assembly of the motor according to the first embodiment,
8 is a view showing a power terminal of the power terminal assembly disposed in the motor according to the first embodiment;
9 is a perspective view showing a motor according to a second embodiment,
10 is an exploded perspective view showing a motor according to a second embodiment;
11 is a cross-sectional view taken along line BB of FIG. 9;
12 is a perspective view showing a housing of a motor according to a second embodiment;
13 is a plan view showing the housing of the motor according to the second embodiment;
14 is a view showing a power terminal assembly of a motor according to a second embodiment.

Hereinafter, preferred 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 described, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components may be selected between the embodiments. It can be used by combining and substituted.

In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention belongs, unless specifically defined and described explicitly. It may be interpreted as a meaning, and generally used terms such as a term defined in advance may be interpreted in consideration of the contextual meaning of the related art.

In addition, the terms used in the embodiments of the present invention are for describing the embodiments and are not intended to limit the present invention.

In this specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as "at least one (or more than one) of A and (and) B, C", it is combined with A, B, C It may include one or more of all possible combinations.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used.

These terms are only for distinguishing the component from other components, and are not limited to the essence, order, or order of the component by the term.

And, when it is described that a component is 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also with the component It may also include a case of 'connected', 'coupled' or 'connected' due to another element between the other elements.

In addition, when it is described as being formed or disposed on "above (above) or under (below)" of each component, the top (above) or bottom (below) is one as well as when two components are in direct contact with each other. Also includes a case in which another component as described above is formed or disposed between two components. In addition, when expressed as “upper (upper) or lower (lower)”, a meaning of not only an upper direction but also a lower direction based on one component may be included.

Hereinafter, the embodiment will be described in detail with reference to the accompanying drawings, but the same or corresponding components are given the same reference numerals regardless of reference numerals, and overlapping descriptions thereof will be omitted.

1 is a view showing a motor according to an embodiment. 1 , the x direction may mean a radial direction, and the y direction may mean an axial direction. In addition, the axial direction and the radial direction may be perpendicular to each other. Here, the axial direction may be a longitudinal direction of the shaft 400 . In addition, reference numeral C may indicate a rotation center of the shaft 400 .

Referring to FIG. 1 , motors 1 and 1a according to the embodiment include housings 100 and 100a having an opening formed on one side, stators 200 and stators 200 disposed inside the housings 100 and 100a. The rotor 300 disposed inside the rotor 300, the shaft 400 coupled to the rotor 300, the bus bar 500 disposed above the stator 200, and the bus bar 500 are electrically connected power terminal assemblies 600 and 600a. Here, the inside may mean a direction disposed toward the rotation center C of the motors 1 and 1a with respect to the radial direction, and the outside may mean a direction opposite to the inside. can

In addition, the motors 1 and 1a may further include a cover (not shown) disposed to cover the opening formed on the upper side of the housings 100 and 100a. Here, the housings 100 and 100a and the cover may form the outer shape of the motors 1 and 1a.

The power terminal assemblies 600 and 600a of the motors 1 and 1a may implement a two-point coupling structure in which one side is coupled to the housings 100 and 100a and the other side is coupled to the bus bar 500 through fusing. Accordingly, it is possible to prevent separation and flow of the power terminal assemblies 600 and 600a.

In this case, the power terminal assemblies 600 and 600a may be coupled to the housings 100 and 100a without using a separate fastening member such as a bolt. For example, a coupling structure capable of being coupled to each other may be formed in the housings 100 and 100a and the power terminal assemblies 600 and 600a without using a separate coupling member. Accordingly, it is possible to improve productivity by simplifying the assembly process of the motors 1 and 1a.

Accordingly, the motors 1 and 1a according to the embodiment provide an embodiment of a coupling structure formed so that the housings 100 and 100a and the power terminal assemblies 600 and 600a can be coupled to each other. Allows assembly of the power terminal assemblies 600 and 600a to the housings 100 and 100a without use.

first embodiment

Figure 2 is a perspective view showing the motor according to the first embodiment, Figure 3 is an exploded perspective view showing the motor according to the first embodiment, Figure 4 is a cross-sectional view showing the line AA of Figure 2, Figure 5 is the first embodiment It is a perspective view showing the housing of the motor according to the example, and FIG. 6 is a plan view showing the housing of the motor according to the first embodiment. Here, FIGS. 2 and 3 may be views illustrating a housing, a stator, a bus bar, and a power terminal assembly in the motor according to the first embodiment.

1 to 6 , the motor 1 according to the first embodiment includes a housing 100 , a stator 200 disposed inside the housing 100 , and a rotor disposed inside the stator 200 . 300, a shaft 400 coupled to the rotor 300, a bus bar 500 disposed above the stator 200, and a power terminal assembly 600 electrically connected to the bus bar 500 may include.

Here, the power terminal assembly 600 of the motor 1 may be slidably coupled to the first groove 141 of the housing 100 to prevent separation and flow.

The housing 100 may be formed in a tubular shape having an accommodating space therein, and an opening may be formed in an upper side thereof. Accordingly, the stator 200 , the rotor 300 , the shaft 400 , and the bus bar 500 may be disposed in the accommodation space of the housing 100 .

In addition, the shape or material of the housing 100 may be variously changed. For example, the housing 100 may be formed of a metal material such as aluminum that can withstand a high temperature well.

The housing 100 includes a first region 110 formed in a cylindrical shape, a second region 120 extending radially from an end of the first region 110 , and an outer side of the second region 120 . It may include a third region 130 extending in the axial direction from the end. Also, the housing 100 may include a pair of first protrusions 140 formed in the second region 120 to protrude in the axial direction. Here, the first region 110 , the second region 120 , the third region 130 , and the pair of first protrusions 140 may be integrally formed.

The first region 110 may be formed in a cylindrical shape. In addition, a stator 200 , a rotor 300 , a bus bar 500 , etc. may be disposed inside the first region. At this time, an opening may be formed in the upper side of the first region 110 , and the stator 200 , the rotor 300 , the bus bar 500 , etc. are inside the first region 110 through the opening. can be placed.

In addition, the first region 110 may include a pocket portion formed to accommodate the bearing (B) on the lower side. Here, the pocket portion of the housing 100 may be referred to as a housing pocket portion.

The second region 120 may be formed to extend radially from an end of the first region 110 . In addition, a third region 130 extending in the axial direction from the outer end of the second region 120 may be disposed.

Here, a distance from the center C to the first region 110 in a radial direction may be smaller than a distance from the center C to the third region 130 . Accordingly, the second region 120 may include a stepped surface disposed between the first region 110 and the third region 120 so that the power terminal assembly 600 can be seated therein.

The inner surface of the third region 130 may be in contact with the body 610 of the power terminal assembly 600 . Accordingly, the third region 130 may support the body 610 of the power terminal assembly 600 .

Meanwhile, a pair of first protrusions 140 formed to fix the power terminal assembly 600 may be disposed on the upper surface 121 of the second region 120 .

A pair of the first protrusions 140 may be disposed in the second region 120 to be spaced apart from each other to have a predetermined distance G. As shown in FIG. Here, the first protrusion 140 may be formed to protrude from the upper surface 121 of the second region 120 in the axial direction.

Accordingly, a portion of the power terminal assembly 600 may be disposed between the pair of first protrusions 140 , and the power terminal assembly 600 is guided by the first protrusions 140 to guide the first protrusion 140 . It may be inserted between the protrusions 140 . Accordingly, the first protrusion 140 may support the power terminal assembly 600 to prevent the power terminal assembly 600 from moving together with the third region 130 .

In addition, based on an imaginary line L connecting the center C1 between the center C and the pair of first protrusions 140, each of the first protrusions 140 is disposed to face each other. One surface 142 may be disposed parallel to the line (L). Accordingly, the first protrusion 140 may guide the sliding movement of the power terminal assembly 600 in a horizontal plane. Here, the moving direction of the sliding movement may be a direction in which the center of the body 610 of the power terminal assembly 600 moves along the line L.

In addition, the first protrusion 140 may be formed in a bar shape when viewed from the axial direction.

Meanwhile, the first protrusion 140 may include a first groove 141 concave in one direction.

The first groove 141 may be concave in the moving direction on the inner surface 143 of the first protrusion 140 . As shown in FIG. 5 , the first groove 141 may be formed by cutting a part of the corner side of the first protrusion 140 , but the formation position of the first groove 141 is not necessarily limited thereto. .

In addition, the first protrusion 630 of the power terminal assembly 600 may be slidably coupled to the first groove 141 .

When the first groove 141 and the first protrusion 630 are coupled to each other, as shown in FIG. 4 , the first protrusion 630 overlaps a portion of the first protrusion 140 in the axial direction. can be placed. That is, a portion of the first protrusion 140 may be disposed on the upper portion of the first protrusion 630 . Accordingly, the flow and separation of the power terminal assembly 600 may be prevented through the coupling of the first groove 141 and the first protrusion 630 .

Referring to FIG. 1 , the stator 200 may include a stator core 210 , an insulator 220 disposed on the stator core 210 , and a coil 230 wound around the insulator 220 .

A coil 230 for forming a rotating magnetic field may be wound around the stator core 210 . Here, the stator core 210 may be formed as one core or by combining a plurality of divided cores.

The stator core 210 may be formed in a form in which a plurality of plates in the form of thin steel plates are stacked on each other, but is not limited thereto. For example, the stator core 210 may be formed as a single piece.

The stator core 210 may include a cylindrical yoke and a plurality of teeth protruding in a radial direction from the yoke.

The plurality of teeth may be disposed to be spaced apart from each other in a circumferential direction of the yoke. Accordingly, a slot, which is a space in which the coil 230 is wound, may be formed between the respective teeth.

Meanwhile, the teeth of the stator 200 may be disposed to have an air gap with the rotor 300 . Here, the air gap may be a distance between the tooth and the magnet 320 in a radial direction.

The insulator 220 insulates the stator core 210 and the coil 230 . Accordingly, the insulator 220 may be disposed between the stator core 210 and the coil 230 .

Accordingly, the coil 230 may be wound around the stator core 210 on which the insulator 220 is disposed.

The rotor 300 rotates through electrical interaction with the stator 200 . In this case, the rotor 300 may be rotatably disposed inside the stator 200 .

Referring to FIG. 1 , the rotor 300 may include a rotor core 310 and a plurality of magnets 320 disposed outside the rotor core 310 . Here, the rotor 300 may be formed of a surface permanent magnet (SPM) type in which a magnet 320 is attached to the surface of the rotor core 310 . In this case, the magnets 320 may be disposed on the rotor core 310 to be spaced apart from each other at predetermined intervals along the circumferential direction with respect to the center C.

In addition, the rotor 300 may further include a can for protecting the rotor core 310 and the magnet 320 . In this case, the can may be disposed to cover the rotor core 310 to which the magnet 320 is coupled.

The rotor core 310 may be implemented in a shape in which a plurality of plates in the form of thin steel plates are stacked or in the shape of a single cylinder.

In addition, the rotor core 310 may be formed in a cylindrical shape. Here, a hole to which the shaft 400 is coupled may be formed in the center C of the rotor core 310 .

The magnet 320 forms a rotating magnetic field with the coil 230 of the stator 200 . Accordingly, the rotor 300 rotates due to the electrical interaction between the coil 230 and the magnet 320 , and the shaft 400 rotates in conjunction with the rotation of the rotor 300 , so that the motor 1 driving force is generated. Here, the magnet 320 of the rotor 300 may be referred to as a drive magnet.

A plurality of the magnets 320 may be disposed on the outer circumferential surface of the rotor core 310 to be spaced apart from each other in a circumferential direction.

The shaft 400 may be rotatably disposed inside the housing 100 through the bearing B. In addition, the shaft 400 may rotate together in conjunction with the rotation of the rotor 300 . In this case, the shaft 400 may be coupled to the hole formed in the center of the rotor core 310 in a press-fit manner.

The bus bar 500 may be disposed on the stator 200 . In addition, the bus bar 500 electrically connects the stator 200 and the power terminal assembly 600 so that external power can be applied to the stator 200 . For example, one side of the bus bar 500 may be electrically connected to the coil 230 of the stator 200 , and the other end thereof may be electrically connected to the power terminal assembly 600 .

The bus bar 500 may include a bus bar body 510 and a plurality of bus bar terminals 520 disposed inside the bus bar body 510 . Here, the bus bar terminal 520 may be referred to as a first terminal.

The bus bar body 510 may be a mold formed through injection molding. Here, the bus bar body 510 may be formed of a synthetic resin material such as resin. Here, the bus bar body 510 may be formed in a ring shape. In addition, the bus bar body 510 may be referred to as a first body.

The bus bar terminal 520 may be disposed on the bus bar body 510 , and a part of the bus bar terminal 520 may be exposed from the bus bar body 510 . Here, the bus bar terminal 520 may be formed of a metal material.

Accordingly, the bus bar terminal 520 includes a coupling portion 521 electrically coupled to the coil 230 and a terminal portion 521 electrically coupled to the power terminal 520 of the power terminal assembly 600 . 522) may be included. Here, the coupling part 521 may be referred to as a first coupling part or a first coupling part.

The coupling part 521 may be electrically connected to the coil 230 through fusing. For example, the coupling part 521 may be formed to have a curved surface having a U-shaped cross-section. In addition, the end of the coil 230 may be disposed inside the curved surface to be electrically connected to the coupling part 521 through fusing. Here, the curved surface may be referred to as a first curved surface.

Meanwhile, the coupling part 521 may be disposed to protrude in a radial direction from the outer circumferential surface of the bus bar body 510 . Accordingly, the coupling part 521 may be easily coupled to the end of the coil 230 protruding in the axial direction.

The terminal unit 522 may be electrically connected to one side of the power terminal 520 . Here, the terminal part 522 may be formed in a plate shape having a flat surface. In addition, the terminal part 522 may be called a bus bar terminal terminal part or a first terminal part.

2 and 3 , the terminal part 522 may be formed in a rectangular parallelepiped shape to have a rectangular cross section. Accordingly, the terminal unit 522 secures a contact area to improve the fixing force with the power terminal 520 by fusing.

In addition, the terminal part 522 may be disposed to protrude in the axial direction from the upper surface of the bus bar body 510 . Also, when viewed from the axial direction, the arrangement direction of the terminal part 522 may be the same as the movement direction of the power terminal assembly 600 .

2 and 4 , one side of the power terminal assembly 600 may be slidably coupled to the housing 100 , and the other side may be coupled to the bus bar 500 through the fusing. Accordingly, the power terminal assembly 600 implements a two-point coupling structure to prevent separation and flow. In addition, the power terminal assembly 600 may be electrically connected to an external power source.

7 is a diagram illustrating a power terminal assembly of a motor according to the first embodiment, and FIG. 8 is a diagram illustrating a power terminal of a power terminal assembly disposed in the motor according to the first embodiment.

7 and 8 , the power terminal assembly 600 may include a body 610 , a plurality of power terminals 620 , and a first protrusion 630 formed to protrude from the body 610 . . Here, the body 610 and the first protrusion 630 may be integrally formed. In addition, the power terminal 620 may be electrically connected to an external power source through a connector or the like.

The body 610 may be a mold formed through injection molding. Here, the bus bar body 510 may be formed of a synthetic resin material such as resin. Accordingly, the body 610 may be formed of a material different from the housing 100 formed of a metal material, and the body 610 and the housing 100 may be insulated. In this case, the body 610 may be referred to as a power terminal body or a second body.

The power terminal 620 may be disposed on the body 610 , and a portion thereof may be exposed from the body 610 .

Accordingly, the power terminal 620 may include a coupling part 621 coupled to be electrically connected to the terminal part 522 of the bus bar terminal 520 and a terminal part 622 electrically connected to the external power source. . Here, the coupling part 621 may be referred to as a second coupling part or a second coupling part.

The coupling part 621 may be electrically connected to the terminal part 522 of the bus bar terminal 520 through fusing. For example, the coupling part 621 may be formed to have a curved surface having a U-shaped cross-section. In addition, the terminal part 522 of the bus bar terminal 520 may be disposed on the inside of the curved surface to be electrically connected to the coupling part 621 and coupled at the same time through fusing. Accordingly, one side of the power terminal assembly 600 may be fixed to the bus bar 500 . Here, the curved surface of the coupling part 621 may be referred to as a second curved surface.

Meanwhile, the coupling part 621 may be disposed on the lower side of the body 610 , and may be formed by bending one region of the power terminal 620 at least once. In this case, the coupling part 621 may be disposed to protrude inward from the body 510 .

The terminal part 622 may be formed in a plate shape having a flat surface. Here, the terminal part 622 of the power terminal 620 may be referred to as a power terminal terminal part or a second terminal part.

2 and 3 , the terminal part 622 may be formed in a rectangular parallelepiped shape to have a rectangular cross section. Accordingly, the terminal portion 622 may secure a contact area to improve contact force and fixing force with the connector.

In addition, the terminal part 622 may be disposed to protrude in the axial direction from the upper surface of the body 610 .

Meanwhile, three power terminals 620 may be disposed on the body 610 through an insert injection method. In addition, each of the three power terminals 620 may be electrically connected to the bus bar terminal 520 . In this case, the bus bar terminal 520 may be electrically connected to the coil 230 of the stator 200 . Accordingly, one of the coils 230 electrically connected to any one of the power terminals 620 may implement at least one of a U-phase, a V-phase, and a W-phase.

The first protrusion 630 may be formed to protrude from the side surface 611 of the body 610 . Here, the side surface 611 of the body 610 may be a surface guided by the first protrusion 140 , or may be a surface disposed to face the first protrusion 140 .

In addition, the first protrusion 630 is slidably coupled to the first groove 141 to prevent separation and flow of the power terminal assembly 600 . In this case, the lower surface of the body 610 may contact the upper surface 121 of the second region 120 by the sliding coupling.

In addition, the first protrusion 630 may be formed to have a predetermined height, and is equal to or slightly higher than the axial height of the first groove 141 with respect to the upper surface 121 of the second region 120 . can be formed large. Accordingly, the first protrusion 630 may be slidably coupled to the first groove 141 in a fitting manner, thereby improving the fixability of the power terminal assembly 600 .

Meanwhile, the upper surface of the first protrusion 630 may be a curved surface 631 . For example, the curved surface 631 may be formed by rounding the upper surface of the first protrusion 630 . Here, the curved surface 631 of the first protrusion 630 may be referred to as a third curved surface.

Accordingly, through the curved surface 631 , the first protrusion 630 may be horizontally slidably coupled to the first groove 141 in an easily fitting manner. Here, the first protrusion 630 may be in line contact with the first protrusion 140 in the first groove 141 through the curved surface 631 .

second embodiment

9 is a perspective view showing the motor according to the second embodiment, FIG. 10 is an exploded perspective view showing the motor according to the second embodiment, FIG. 11 is a cross-sectional view taken along line BB of FIG. 9, and FIG. 12 is the second embodiment It is a perspective view showing the housing of the motor according to the example, FIG. 13 is a plan view showing the housing of the motor according to the second embodiment, and FIG. 14 is a view showing the power terminal assembly of the motor according to the second embodiment.

In describing the motor 1a according to the second embodiment with reference to FIGS. 9 to 14 , the same components as those of the motor 1 according to the first embodiment may be denoted by the same reference numerals. A detailed description will be omitted.

When comparing the motor 1 according to the first embodiment and the motor 1a according to the second embodiment, the motor 1a according to the second embodiment caulks one area of the first protrusion 140a to generate power It is different from the motor 1 according to the first embodiment in that the terminal assembly 600a is fixed. Here, the first protrusion 140a of the motor 1a according to the second embodiment may be the first protrusion 140 of the motor 1 according to the first embodiment in which the first groove 141 is deleted.

That is, instead of the sliding coupling between the first groove 141 and the first protrusion 630 of the motor 1 according to the first embodiment, the motor 1a according to the second embodiment has the first protrusion 140a. It is different from the motor 1 according to the first embodiment in that it implements a coupling structure for fixing the power terminal assembly 600a through the caulking part 150 formed by caulking one area.

1 and 9 to 14 , the motor 1a according to the second embodiment includes a housing 100a, a stator 200 disposed inside the housing 100a, and the inside of the stator 200. A rotor 300 disposed therein, a shaft 400 coupled to the rotor 300 , a bus bar 500 disposed above the stator 200 , and a power terminal assembly electrically connected to the bus bar 500 . (600a) may be included.

Here, the power terminal assembly 600a may be prevented from being separated and flowed by the caulking part 150 .

The housing 100a includes a pair of first protrusions 140a and a caulking portion 150 formed in the first region 110 , the second region 120 , the third region 130 , and the second region 120 . ) may be included.

A pair of the first protrusions 140a may be disposed in the second region 120 to be spaced apart from each other in one direction to have a predetermined distance G. As shown in FIG.

In addition, the pair of first protrusions 140a may guide the assembly of the power terminal assembly 600a coupled in the axial direction. Accordingly, since a portion of the power terminal assembly 600a may be disposed between the pair of first protrusions 140a, the pair of first protrusions 140a support the power terminal assembly 600a and The flow of the power terminal assembly 600a may be prevented. Here, the power terminal assembly 600a may be coupled between a pair of the first protrusions 140a in a fitting manner.

As shown in FIG. 11 , a height H1 of the first protrusion 140a with respect to the upper surface 121 of the second region 120 may be greater than a height H2 of the body 610 . , the first protrusion 140a may be formed in the second region 120 .

Accordingly, since the first protrusion 140a is formed higher than the body 610 with respect to the upper surface 121 of the second region 120 , as shown in FIG. 9 , the caulking part 150 . may press the upper surface 612 of the body 610 of the power terminal assembly 600a to prevent the power terminal assembly 600a from flowing.

In this case, the caulking part 150 may be formed by caulking one area of the first protrusion 140a. Accordingly, the motor 1a may implement a coupling structure between the housing 100a and the power terminal assembly 600a by using the caulking part 150 .

For example, the caulking part 150 may be formed by pressing a partial region of the first protrusion 140a while the power terminal assembly 600a is disposed between the pair of first protrusions 140a. Accordingly, the caulking part 150 may contact the body 610 of the power terminal assembly 600a to overlap in the axial direction to prevent the power terminal assembly 600a from flowing.

Meanwhile, the housing 100a may further include a second groove 160 concave in the axial direction on the upper surface 121 . Here, the second groove 160 may be formed between a pair of the first protrusions 140a.

In addition, the second protrusion 640 of the power terminal assembly 600a may be coupled to the second groove 160 . Accordingly, the coupling of the second groove 160 and the second protrusion 640 may prevent the power terminal assembly 600a from flowing.

In addition, the housing 100a may further include a second protrusion 170 formed to protrude from the upper surface 121 .

The second protrusion 170 may serve to guide the coupling of the power terminal assembly 600a together with the first protrusion 140a and to match the authenticity of the power terminal assembly 600a.

As shown in FIG. 10 , the second protrusion 170 may be formed to connect the outer ends of the pair of first protrusions 140a, and the outer surface of the body 610 is one side of the second protrusion. It may come in contact with the inner side 171 of the protrusion 170 and be supported by the second protrusion 170 .

Referring to FIG. 14 , the power terminal assembly 600a may include a body 610 , a plurality of power terminals 620 , and a second protrusion 640 formed to protrude from the body 610 . Here, the body 610 and the second protrusion 640 may be integrally formed.

The second protrusion 640 may be formed to protrude from the lower surface of the body 610 in the axial direction. In addition, the second protrusion 640 may be coupled to the second groove 160 of the housing 100a in a fitting manner to prevent separation and flow of the power terminal assembly 600a.

Although the above has been described with reference to preferred embodiments of the present invention, those skilled in the art can variously modify and change the present invention within the scope without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that it can be done.

1: motor
100, 100a: housing
140, 140a: first projection 141: first groove
150: caulking unit 160: second groove
170: second projection
200: stator
300: rotor
400: shaft
500: bus bar
510: bus bar body 520: bus bar terminal
600, 600a: power terminal assembly
610: body 620: power terminal
630: first protrusion 640: second protrusion

Claims (13)

housing;
a stator disposed inside the housing;
a rotor disposed to correspond to the stator;
a shaft coupled to the rotor;
a bus bar disposed on the stator; and
a power terminal assembly coupled to the housing;
the housing is
a first region having an opening formed at an upper portion and disposed therein, wherein the stator and the rotor are disposed;
a second region extending radially from an end of the first region, and
and a pair of first protrusions formed in the second region to protrude in the axial direction,
wherein the power terminal assembly is guided by the first protrusion and disposed between the first protrusions. According to claim 1,
The housing includes a first groove concavely formed in the first protrusion,
the power terminal assembly
body,
a plurality of power terminals disposed on the body; and
It includes a first protrusion formed to protrude from the body,
The body and the first protrusion are integrally formed,
The first protrusion is coupled to the first groove. 3. The method of claim 2,
The first groove is formed concavely on the inner surface of the first projection,
The motor slidably engages the first protrusion with the first groove. 4. The method of claim 3,
The upper surface of the first protrusion is a curved motor. 4. The method of claim 3,
Based on an imaginary line (L) connecting the center (C) of the shaft and the center (C1) between the pair of first protrusions,
One surface of each of the first protrusions facing each other is disposed parallel to the line (L). 4. The method of claim 3,
One region of the first protrusion is disposed to overlap the first protrusion in the axial direction. According to claim 1,
The power terminal assembly includes a body and a plurality of power terminals disposed on the body;
A height H1 of the first protrusion based on the upper surface of the second region is greater than a height H2 of the body. 8. The method of claim 7,
The housing further includes a caulking portion formed to be in contact with the upper surface of the body by caulking a region of the first protrusion. 9. The method of claim 8,
The power terminal assembly further includes a second protrusion formed to protrude from the lower surface of the body,
The second protrusion is coupled to a second groove formed concave in the axial direction on the upper surface of the housing. 8. The method of claim 2 or 7,
An end of the power terminal is coupled to a bus bar terminal of the bus bar by fusing. According to claim 1,
The housing and the body of the power terminal assembly are formed of different materials. housing;
a stator disposed inside the housing;
a rotor disposed to correspond to the stator;
a shaft coupled to the rotor;
a bus bar disposed on the stator; and
a power terminal assembly coupled to the housing;
the housing is
a first region having an opening formed at an upper portion and disposed therein, wherein the stator and the rotor are disposed;
a second region extending radially from an end of the first region, and
and a pair of first protrusions formed in the second region to protrude in the axial direction,
the power terminal assembly
body,
a plurality of power terminals disposed on the body; and
It includes a first protrusion formed to protrude from the body,
A motor in which the first protrusion is slidably coupled to a first groove concavely formed in the first protrusion. housing;
a stator disposed inside the housing;
a rotor disposed to correspond to the stator;
a shaft coupled to the rotor;
a bus bar disposed on the stator; and
a power terminal assembly coupled to the housing;
the housing is
a first region having an opening formed at an upper portion and disposed therein, wherein the stator and the rotor are disposed;
a second region extending radially from an end of the first region, and
and a pair of first protrusions formed in the second region to protrude in the axial direction,
The power terminal assembly includes a body and a plurality of power terminals disposed on the body;
The housing further includes a caulking portion formed to be in contact with the upper surface of the body by caulking a region of the first protrusion.

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