CN118176646A - Motor with a motor housing - Google Patents

Abstract

An electric machine, comprising: a first housing; a stator disposed in the first housing and having a coil wound thereon; a rotor disposed in the stator; a shaft disposed at the center of the rotor; a second housing disposed at an upper portion of the first housing; and a routing member disposed on the stator and having a centrally disposed shaft, wherein the routing member has a first hole; the first housing has a second hole facing the first hole; the second housing has a third hole facing the first hole and the second hole, and a screw member coupled with the first hole, the second hole, and the third hole.

Description

Motor with a motor housing

Technical Field

The present embodiment relates to a motor.

Background

An electric motor is a device that converts electrical energy into rotational energy using the forces experienced by conductors in a magnetic field. Recently, as the range of use of the motor is expanded, the role of the motor becomes more important. In particular, with the rapid development of electrification of automobiles, the demand for motors applied to steering systems, braking systems, and design systems is also greatly increasing.

Generally, a motor is provided with a rotating shaft formed to be rotatable, a rotor coupled to the rotating shaft, and a stator fixed to the inside of a housing. The stator is installed with a gap along the circumference of the rotor. Further, a coil forming a rotating magnetic field is wound around the stator, and electrically interacts with the rotor, thereby inducing the rotor to rotate. Therefore, when the rotor rotates, the rotation shaft rotates and generates a driving force.

A bus bar (bus bar) electrically connected to the coils is arranged at an upper end of the stator. The bus bar generally includes a ring-shaped bus bar housing and a bus bar terminal to which the coil is connected by being coupled to the bus bar housing.

The bus bar terminal may have a plurality of terminals directly connected to the coil, and each terminal may be processed with a portion bent due to space limitations or the position of the coil connection end.

The rotation shaft may be rotatably supported inside the housing by a bearing. At this time, the bearing may be arranged to be supported in the housing, or may be mounted by press-fitting into the bus bar housing.

In the case of the above motor, since each part must be assembled inside the housing through several assembly processes, there are problems in that the production efficiency is lowered and the manufacturing cost is increased.

Disclosure of Invention

Technical problem

The present embodiment aims to provide a motor capable of improving assemblability by improving a structure and reducing manufacturing costs by reducing the number of parts.

Further, it is intended to provide a motor capable of effectively reducing external impact or vibration.

Technical proposal

The motor according to the present embodiment includes: a first housing; a stator disposed in the first housing, the stator being wound with a coil; a rotor disposed inside the stator; a shaft disposed at the center of the rotor; a second housing disposed at an upper portion of the first housing; and a router disposed on the stator and having a shaft disposed in the center, wherein the router includes a first hole, wherein the first housing includes a second hole facing the first hole, wherein the second housing includes a third hole facing the first hole and the second hole, and wherein a screw member coupled with the first hole, the second hole, and the third hole is included.

The first housing includes a first side surface portion and a first upper surface portion bent outward from an upper end of the first side surface portion, and the second hole may be disposed in the first upper surface portion.

The second housing includes a second upper surface portion disposed on an upper surface of the first upper surface portion, a second side surface portion disposed on a side surface of the first upper surface portion, and a second lower surface portion disposed on a lower surface of the first upper surface portion, wherein the third hole is disposed on the second lower surface portion.

The routing member includes a routing member body and a protruding portion protruding radially from the routing member body, wherein the first hole may be disposed in the protruding portion.

Grooves having a shape more recessed in the radial direction than other regions are arranged on the second upper surface portion, and the ends of the protruding portions may be coupled to the grooves.

The guide groove having the coil coupled therein may be disposed on an upper surface of the routing member body.

The guide groove may be provided in plurality and arranged to be spaced apart from each other in the radial direction.

A bushing made of an insulating material may be arranged between the first hole and the screw member.

The shaft, routing member and rotor may be integrally formed.

A controller disposed inside the second housing and electrically connected to the coil may be included.

Advantageous effects

With the present embodiment, in the integrated structure of the routing member, the rotor, and the shaft, the routing member is compactly coupled to the second housing together with the first housing, and thus there is an advantage in that parts for fixing the routing member can be omitted, thereby reducing the number of parts and assembly time.

In addition, components (including routing members) inside the motor can be firmly fixed inside the housing, thus having an advantage of preventing the separation of different parts due to external impact.

Further, there is an advantage in that the package member may be disposed between the plurality of cases to prevent external impact from being transmitted to the components inside the motor.

In detail, the encapsulation member absorbs vibration and impact generated in various directions including a plurality of mutually perpendicular regions, thereby protecting components inside the motor.

Further, since the encapsulation member and the second housing are integrally formed, the first housing, the second housing, and the routing member are coupled to each other by a single screw member, there are advantages in that the assemblability is improved and the manufacturing cost is reduced by reducing the number of parts.

Drawings

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

Fig. 2 is a plan view showing an upper surface of the motor according to the first embodiment of the present invention.

Fig. 3 is a sectional view of a motor according to a first embodiment of the present invention.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is an exploded perspective view of a motor according to a first embodiment of the present invention.

Fig. 6 is a perspective view showing the appearance of a motor according to a second embodiment of the present invention.

Fig. 7 is a sectional view of a motor according to a second embodiment of the present invention.

Fig. 8 is an exploded perspective view of a motor according to a second embodiment of the present invention.

Fig. 9 is a view for explaining a coupling structure of a second housing and a package member 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 scope of the technical idea of the present invention.

Furthermore, unless explicitly defined and described, terms (including technical and scientific terms) used in the embodiments of the present invention may be interpreted as meanings commonly understood by those skilled in the art, and commonly used terms, such as terms defined in dictionaries, may be interpreted in consideration of the meanings of the context of the prior art.

Furthermore, the terminology used in the description of the embodiments presented herein is for the purpose of describing the embodiments 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 with A, B and C.

In addition, in describing components of embodiments of the present invention, terms such as first, second, A, B, (a) and (b) may be used. These terms are intended to distinguish one element from another element, and do not limit the nature, order, or sequence of elements.

Also, when an element is described as being "connected," "coupled," or "interconnected" with another element, the element is not only directly connected, coupled, or interconnected with the other element, but also may include the case where the other element is "connected," "coupled," or "interconnected" with each other.

Further, when described as being formed or arranged "above" or "below" each component, the "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 arranged between the two components. Further, when expressed as "upper (upper)" or "lower (lower)", meanings based on the upward direction and the downward direction of one component may be included.

The electric machine according to the invention can be arranged inside a vehicle (vehicle). For example, an electric machine according to the invention may be a component of a controller in a vehicle.

Fig. 1 is a perspective view of a motor according to a first embodiment of the present invention; fig. 2 is a plan view showing an upper surface of a motor according to a first embodiment of the present invention; fig. 3 is a sectional view of a motor according to a first embodiment of the present invention; fig. 4 is an enlarged view of a in fig. 3; fig. 5 is an exploded perspective view of a motor according to a first embodiment of the present invention.

Referring to fig. 1 to 5, a motor 10 according to a first embodiment of the present invention may include a first housing 200, a second housing 100, a stator 210, a rotor 230, a shaft 250, and a routing 300.

The upper surface of the first housing 200 may be open. The first housing 200 may house therein the stator 210, the rotor 230, and the routing member 300. The first housing 200 may be referred to as a motor housing. The first housing 200 may be disposed at a lower portion of the second housing 100.

The first housing 200 may be a can shape (can shape) having a circular cross section. The first housing 200 may include a first side surface portion 202 and a first upper surface portion 204. The first side surface portion 202 may form a space therein to accommodate the stator 210, the rotor 230, and the routing member 300. The first upper surface portion 204 may be bent outward from the upper end of the first side surface portion 202 and coupled to the second housing 100. The first upper surface portion 204 may be arranged perpendicular to the first side surface portion 202.

A hole may be formed in the lower surface of the first housing 200 to allow the shaft 250 to pass therethrough.

The stator 210 may be disposed inside the first housing 200. The stator 210 may include a stator core, an insulator surrounding an outer surface of the stator core, and a coil 220 wound around the insulator. Both ends of the coil 220 extend upward from the stator core and may be guided by the routing member 300.

The rotor 230 may be disposed inside the stator 210. The rotor 230 may include a rotor core and a magnet 230 coupled to the rotor core. As an example, the magnets 230 may be disposed on the outer circumferential surface of the rotor core. The magnet 230 may be disposed to face the coil 220. Thus, the rotor 230 may rotate with the shaft 250 due to electromagnetic interaction between the magnet 230 and the coil 220.

The shaft 250 is coupled to the center of the rotor 230 and may rotate together with the rotor 230. Both ends of the shaft 250 may extend in upward and downward directions of the first housing 200, respectively. The lower end of the shaft 250 may protrude downward from the first housing 200 through a hole formed in the lower surface of the first housing 200.

Bearings 262 and 264 may be disposed inside the first housing 200 to support rotation of the shaft 250. The bearings 262 and 264 include an upper bearing 262 and a lower bearing 264, the upper bearing 262 being disposed at an upper portion of the rotor 230 and supporting an upper end of the shaft 250, and the lower bearing 264 being disposed at a lower portion of the rotor 230 and supporting the shaft 250 to rotate. The space inside the first housing 200 in which the first bearing 262 and the second bearing 264 are arranged may have a groove shape that is more recessed than other regions.

The second housing 100 may be disposed at an upper portion of the first housing 200. The cross-sectional area of the second housing 100 may be greater than the cross-sectional area of the first housing 200. The second housing 100 may be formed with open upper and lower surfaces. Since a controller (e.g., a printed circuit board) for controlling the motor 10 may be coupled to the second housing 100, the second housing 100 may be referred to as a controller housing.

The second housing 100 may be coupled to surround the first upper surface portion 204 of the first housing 200. In detail, the second housing 100 may include a second upper surface portion 106 coupled to an upper surface of the first upper surface portion 204, a second side surface portion 102 coupled to a side surface of the first upper surface portion 204, and a second lower surface portion 104 coupled to a lower surface of the first upper surface portion 204. The second upper surface portion 106, the second side surface portion 102 and the second lower surface portion 104 have approximate lettersAnd thus may be coupled to surround the first upper surface portion 204.

A cover (not shown) is coupled to the open upper surface of the second housing 100 to cover the space inside the second housing 100 from the outside area.

The routing member 300 may be disposed at an upper portion of the stator 210. The routing member 300 may be disposed to cover the open upper portion of the first housing 200. The routing member 300 may be disposed to cover upper surfaces of the stator 210 and the rotor 230. The routing member 300 may be coupled to an upper end of the shaft 250. At least a portion of the routing member 300 may be disposed inside the first housing 200, and another portion may be disposed inside the second housing 100. In contrast, the routing member 300 may be selectively disposed in only one of the spaces inside the first housing 200 or the second housing 100.

The router 300 may guide the coil 220 to guide both ends of the coil 220 to a preset position.

Routing member 300 may include a routing member body 310. The router body 310 has a circular cross section and may have a predetermined thickness. A hole through which the shaft 250 passes may be formed in the center of the routing member body 310. A protruding region 314 protruding upward may be formed at the center of the upper surface of the routing member body 310, and the upper bearing 262 may be disposed at a lower portion of the protruding region 314. Reinforcing ribs 316 may be disposed on side surfaces of the protruding region 314 to reinforce rigidity of the protruding region 314.

A plurality of guide grooves may be formed on the upper surface of the routing member body 310. The plurality of guide grooves may be arranged to correspond to the number of polarities (polarities, poles) of the coil 220. For example, when the coil 220 includes a plurality of coils having three different polarities, three guide grooves may be provided and arranged along the radial direction of the router body 310.

The plurality of guide grooves may be separated by different side walls. For example, the router body 310 may include a first sidewall forming an edge region of the router body 310, a second sidewall 322 disposed inside the first sidewall, a third sidewall 324 disposed inside the second sidewall 322, and a fourth sidewall 326 disposed inside the third sidewall 324. Accordingly, the plurality of guide grooves may include a first guide groove disposed between the first and second sidewalls 322, a second guide groove disposed between the second and third sidewalls 322, 324, and a third guide groove disposed between the third and fourth sidewalls 324, 326.

The first coil of the first polarity may be disposed in the first guide groove. A second coil of a second polarity different from the first polarity may be disposed in the second guide groove. A third coil of a third polarity different from the first polarity and the second polarity may be disposed in the third guide groove.

Meanwhile, grooves 319 may be formed on the first side wall disposed at the outermost side for allowing the first to third coils to enter the first to third guide grooves, respectively.

Accordingly, the first to third coils are each disposed in the first to third guide grooves, and both ends of each of the first to third coils may be coupled to the bus bars 410, 420, and 430. The number of bus bars 410, 420, and 430 is set to correspond to the polarity of the coil 220, and one end is coupled to the coil 220, and may be coupled to the terminal guide 180. Here, the terminal guide 180 may have a shape protruding upward from the upper surface of the first housing 200. Accordingly, the controller may be electrically connected to the bus bars 410, 420, and 430 through the terminal guide 180. Thus, the motor 10 can be controlled by the controller.

The routing member 300 may be coupled with the first housing 200 and the second housing 100. To this end, the routing member 310 may include a protruding portion 330. The protruding portion 330 may have a shape protruding radially outward from the outer surface of the router body 310. The protruding portion 330 may be provided in plurality and radially arranged with respect to the router body 310. The plurality of protruding portions 330 may be arranged to be spaced apart from each other in the circumferential direction.

The protruding portion 330 may include a first hole 332 penetrating from the upper surface to the lower surface. The first hole 332 may be disposed near an end of the protruding portion 330.

A groove 108 may be formed in the second upper surface portion 106 of the second housing 100 in a shape recessed radially more outwardly than other areas. At least a portion of the protruding portion 330 may be coupled to the slot 108. The slot 108 may receive an end of the protruding portion 330.

A second hole penetrating from the upper surface to the lower surface, which faces the groove 108 in the vertical direction, may be formed in the first upper surface portion 204 of the first housing 200. The second hole may be disposed to face the first hole 332 in a vertical direction.

A third hole may be formed in the second lower surface portion 104 of the second housing 100 surrounding the lower surface of the first upper surface portion 204. The third hole may be disposed to face the first hole 332 and the second hole in the vertical direction. The third aperture may be a groove recessed downwardly from the upper surface of the second lower surface 104.

Accordingly, the screw member 390 is coupled downward from the upper region of the second upper surface portion 106, so that the router 300, the first housing 200, and the second housing 100 can be coupled to each other. In this case, the screw member 390 may pass through the second hole and the first hole 332 in sequence, and be screw-coupled into the third hole.

Meanwhile, for insulation, a bushing 340 made of an insulating material may be disposed between the inner surface of the first hole 332 and the screw member 390. The bushing 340 may be formed along an upper surface of the protruding portion 330, an inner surface of the first hole 332, and a lower surface of the protruding portion 330.

According to the above-described structure, in the integral structure of the routing member 300, since the rotor 240 and the shaft 250, the routing member 300 are compactly coupled to the second housing 100 together with the first housing 200, parts for fixing the routing member can be omitted, and thus there is an advantage in that the number of parts and the assembly time can be reduced.

In addition, the components inside the motor (including the routing member 300) can be firmly fixed inside the housings 100 and 200, with the advantage that separation between different parts due to external impact can be prevented.

Hereinafter, the motor according to the second embodiment will be described.

Fig. 6 is a perspective view showing the appearance of a motor according to a second embodiment of the present invention; fig. 7 is a sectional view of a motor according to a second embodiment of the present invention; fig. 8 is an exploded perspective view of a motor according to a second embodiment of the present invention; fig. 9 is a view for explaining a coupling structure of a second housing and a package member according to a second embodiment of the present invention.

Referring to fig. 6 to 9, the motor 20 according to the second embodiment of the present invention may include: a first housing 1200; a second housing 1100; a stator 1210; a rotor 1240; a shaft 1260; and a router 1280.

The upper surface of the first housing 1200 may be open. The first housing 1200 may house therein a stator 1210, a rotor 1240, and a router 1280. The first housing 1200 may be referred to as a motor housing. The first housing 1200 may be disposed at a lower portion of the second housing 1100.

The first housing 1200 may be a can shape having a circular cross section. The first housing 1200 may include a first side surface portion 1203 and a first upper surface portion 1206. The first side portion 1203 may form a space therein to accommodate the stator 1210, the rotor 1240, and the router 1280. The first upper surface portion 1206 may be bent outward from an upper end of the first side surface portion 1203 and coupled to the second housing 1100. The first upper surface portion 1206 may be arranged perpendicular to the first side surface portion 1203.

A hole may be formed in a lower surface of the first housing 1200 to allow the shaft 1260 to pass through the hole.

The stator 1210 may be disposed inside the first housing 1200. The stator 1210 may include a stator core, an insulator 1230 surrounding an outer surface of the stator core, and a coil 1220 wound around the insulator. Both ends of the coil 1220 extend upward from the stator core and may be guided by a router 1280.

The rotor 1240 may be disposed inside the stator 1210. The rotor 1240 may include a rotor core and a magnet 1250 coupled to the rotor core. As an example, the magnet 1250 may be disposed on an outer circumferential surface of the rotor core. The magnet 1250 may be disposed to face the coil 1220. Thus, the rotor 1240 may rotate with the shaft 1260 due to electromagnetic interaction between the magnet 1250 and the coil 1220.

Shaft 1260 is coupled to the center of rotor 1240 and may rotate with rotor 1240. Both ends of the shaft 1260 may extend in upward and downward directions of the first housing 1200, respectively. The lower end of the shaft 1260 may protrude downward from the first housing 1200 through a hole formed in the lower surface of the first housing 1200.

Bearings 1272 and 1274 may be disposed within first housing 1200 to support rotation of shaft 1260. Bearings 1272 and 1274 include an upper bearing 1274 and a lower bearing 1272, the upper bearing 1274 being disposed at an upper portion of the rotor 1240 and supporting an upper end of the shaft 1260, and the lower bearing 1272 being disposed at a lower portion of the rotor 1240 and supporting rotation of the shaft 1260. The space in which the upper bearing 1272 and the lower bearing 1274 are arranged inside the first housing 1200 may have a groove shape that is more recessed than other regions.

The second housing 1100 may be disposed at an upper portion of the first housing 1200. The cross-sectional area of the second housing 1100 may be greater than the cross-sectional area of the first housing 1200. The second housing 1100 may be formed with open upper and lower surfaces. Since a controller (e.g., a printed circuit board) for controlling the motor 20 may be coupled to the second housing 1100, the second housing 1100 may be referred to as a controller housing.

Specifically, a cover 1300 covering an upper surface of the second housing 1100 may be disposed at an upper portion of the second housing 1100. In addition, a printed circuit board 1330 and a connector 1320 may be disposed between the cover 1300 and the second case 1100. The printed circuit board 1330 may be disposed in a space inside the second housing 1100. Accordingly, when external terminals are coupled to the connector, components inside the motor 20 can be controlled by the printed circuit board 1330. To this end, the printed circuit board 1330 may be electrically connected to the coil 1220. A hole 1310 may be formed in the cover 1300 to allow the connector 1320 to be coupled with the cover 1300.

A hole 1110 coupled with the first housing 1200 may be formed on a lower surface of the second housing 1100. The aperture 1110 may form a first region 1120 that forms a first diameter and a second region 1130 that forms a second diameter that is smaller than the first diameter. Both the first region 1120 and the second region 1130 may be formed in a circular shape. The second region 1130 may be disposed at a lower portion of the first region 1120. The second region 1130 may have a stepped shape in which a portion of the inner surface of the first region 1120 protrudes inward. When the first housing 1200 and the second housing 1100 are coupled, a lower surface of the first upper surface portion 1206 of the first housing 1200 is in contact with an upper surface of the second region 1130, and a portion of an outer surface of the first side portion 1203 may be disposed to face an inner surface of the second region 1130. The cross-sectional shape of the second region 1130 may have an approximate letter when viewed from the side surfaceIs a cross-sectional shape of (c).

The first region 1120 may include a first groove 1122. The first groove 1122 may have a shape in which a portion of the inner surface of the first region 1120 is recessed outward. The first groove 1122 may be provided in plurality and arranged to be spaced apart from each other in the circumferential direction of the first region 1120.

In the upper surface of the second region 1130, in a region where the bottom surface of the first groove 1122 is formed, a second groove 1135 (see fig. 9) recessed more downward than other regions from the upper surface of the second region 1130 may be formed. Inside the second groove 1135, a bushing 1500 may be disposed. The bushing 1500 is formed in a ring shape and may include a first hole 1510 (see fig. 9) located in the center. Threads or thread grooves may be formed on an inner surface of the first hole 1510.

The routing member 1280 may be disposed at an upper portion of the stator 1210. The router 1280 may be disposed to cover an open upper portion of the first housing 1200. The router 1280 may be disposed to cover upper surfaces of the stator 1210 and the rotor 1240. A router 1280 may be coupled to an upper end of the shaft 1260. At least a portion of the router 1280 may be disposed inside the first housing 1200 and another portion may be disposed inside the second housing 1100. In contrast, the routing member 1280 may be selectively disposed in only one of the spaces inside the first housing 1200 or the second housing 1100.

The router 1280 may guide the coil 1220 to guide both ends of the coil 1220 to a preset position.

The router 1280 may comprise a router body. The routing member body has a circular cross-section and may have a predetermined thickness. A hole through which the shaft 1260 passes may be formed in the center of the routing member body. An upwardly protruding region 1282 may be formed at the center of the upper surface of the router body, and an upper bearing may be disposed at a lower portion of the protruding region 1282.

A plurality of guide grooves may be formed on the upper surface of the routing member body 1310. The plurality of guide grooves may be arranged in a number corresponding to the polarity of the coil 1220. For example, when the coil 1220 includes a plurality of coils having three different polarities, three guide grooves may be provided and arranged along the radial direction of the router body.

The plurality of guide grooves may be separated by different side walls. For example, the router body may include a first sidewall forming an edge region of the router body, a second sidewall disposed inside the first sidewall, a third sidewall disposed inside the second sidewall, and a fourth sidewall disposed inside the third sidewall. Accordingly, the plurality of guide grooves may include a first guide groove disposed between the first sidewall and the second sidewall, a second guide groove disposed between the second sidewall and the third sidewall, and a third guide groove disposed between the third sidewall and the fourth sidewall.

The first coil of the first polarity may be disposed in the first guide groove. A second coil of a second polarity different from the first polarity may be disposed in the second guide groove. A third coil of a third polarity different from the first polarity and the second polarity may be disposed in the third guide groove.

Meanwhile, grooves (not shown) for allowing the first to third coils to enter the first to third guide grooves, respectively, may be formed on the first side wall disposed at the outermost side.

Accordingly, the first to third coils are each disposed in the first to third guide grooves, and both ends of each of the first to third coils may be coupled to the bus bar 1284. The number of the bus bars 1284 is set to correspond to the polarity of the coil 1220, one end is coupled to the coil 1220, and may be coupled to the terminal guide 1286. Here, the terminal guide 1286 may have a shape protruding upward from the upper surface of the first housing 1200. Accordingly, the controller may be electrically connected to the bus bar 1284 through the terminal guide 1286. Thus, the motor 20 may be controlled by a controller.

The router 1280 may be coupled to the first housing 1200 and the second housing 1100. To this end, the routing member 1280 may include a projection 1290. The protruding portion 1290 may have a shape protruding radially outward from the outer surface of the routing member body 1310. The protruding portion 1290 may be provided in plurality and radially arranged with respect to the routing member body 1310. The plurality of protruding portions 1290 may be arranged to be spaced apart from each other in the circumferential direction. The end of the protruding portion 1290 may protrude further outward than the outer surface of the first upper surface portion 1206 of the first housing 1200.

The protruding portion 1290 may include a second hole 1292 penetrating from the upper surface to the lower surface. The second hole 1292 may be disposed near an end of the protruding portion 1290. The second hole 1292 may be disposed to face the first hole 1510 in a vertical direction. At least a portion of the protruding portion 1290 may be coupled to the first groove 1122 in the first region 1120. An end of the protruding portion 1290 may be coupled to the first groove 1122.

Further, a third hole 1207 (see fig. 7) may be formed in the first upper surface portion 1206 of the first housing 1200. The third hole 1207 is formed to penetrate from the upper surface to the lower surface of the first upper surface portion 1206, and may be disposed to face the first hole 1510 and the second hole 1292 in the vertical direction.

Accordingly, the screw member may pass through the second and third holes 1292 and 1207 and be screw-coupled to the first hole 1510, and thus, the first housing, the second housing 1100, and the router 1280 may be firmly coupled to each other.

Meanwhile, the motor 20 may include an encapsulation member 1400. The encapsulation member 1400 may be disposed between the first housing 1200 and the second housing 1100. The encapsulation member 1400 is made of rubber or resin, and may be integrally formed with the second housing 1100 made of plastic by insert injection.

The encapsulation member 1400 may have lettersIs a cross-sectional shape of (c). The encapsulation member 1400 may include a second side surface portion 1410 and a second upper surface portion 1420. The second upper surface portion 1420 and the second side surface portion 1410 may be arranged perpendicular to each other.

The second side surface portion 1410 may be disposed outside of the first side surface portion 1203 of the first housing 1200. The second side surface portion 1410 may be disposed between the first side surface portion 1203 and the inner surface of the second region 1130.

The second upper surface portion 1420 may be disposed at a lower portion of the first upper surface portion 1206 of the first housing 1200. The second upper surface portion 1420 may be disposed between a lower surface of the first upper surface portion 1206 and an upper surface of the second region 1130. A groove 1422 may be formed in an edge region of the second upper surface portion 1420, which is more recessed than other regions to allow the threaded member to pass through.

According to the structure, the structure has the following advantages: the sheathing member 1400 may be disposed between the first housing 1200 and the second housing 1100 to prevent external impact from being transmitted to the internal parts of the motor.

In detail, the encapsulation member 1400 may absorb vibration and impact generated in various directions by including a plurality of regions perpendicular to each other, thereby protecting components inside the motor.

Further, since the packing member 1400 and the second housing 1100 are integrally formed, and the first housing 1200, the second housing 1100, and the router 1280 are coupled to each other by a single screw member, there are the following advantages: improving assemblability and reducing manufacturing costs due to the reduction in the number of parts.

In the above description, all the components constituting the embodiments of the present invention were described as being combined together or integrally operated, 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, unless specifically stated otherwise, the terms "comprise," "include," or "have" above mean that the corresponding components may be inherent, and therefore should be understood not to exclude other components, but also include other components. Unless otherwise defined, all terms (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. Terms commonly used (e.g., terms defined in dictionaries) should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The above description is merely illustrative of 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 characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention, but are described, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent scope should be construed to be included in the scope of the present invention.

Claims (10)

1. An electric machine, comprising:

A first housing;

a stator disposed inside the first housing, the stator being wound with a coil;

a rotor disposed inside the stator;

a shaft disposed at the center of the rotor;

A second housing disposed at an upper portion of the first housing; and

A routing member disposed above the stator and centrally with the shaft,

Wherein the routing member includes a first aperture,

Wherein the first housing includes a second hole facing the first hole,

Wherein the second housing includes a third hole facing the first hole and the second hole, and

Wherein a threaded member is included that is coupled to the first bore, the second bore, and the third bore.

2. An electric machine according to claim 1,

Wherein the first housing includes a first side surface portion and a first upper surface portion bent outwardly from an upper end of the first side surface portion, and

Wherein the second hole is arranged at the first upper surface portion.

3. An electric machine according to claim 2,

Wherein the second housing includes a second upper surface portion disposed on an upper surface of the first upper surface portion, a second side surface portion disposed on a side surface of the first upper surface portion, and a second lower surface portion disposed on a lower surface of the first upper surface portion, and

Wherein the third hole is arranged on the second lower surface portion.

4. A motor according to claim 3,

Wherein the routing member includes a routing member body and a protruding portion protruding radially from the routing member body, and

Wherein the first hole is disposed at the protruding portion.

5. An electric machine according to claim 4,

Wherein a groove is arranged on the second upper surface portion, the groove having a shape recessed more radially than other regions, and

Wherein the tip of the protruding portion is coupled to the groove.

6. An electric machine according to claim 4,

Wherein, the upper surface of the routing piece body is provided with a guiding groove for the coil to be connected.

7. An electric machine according to claim 6,

Wherein the guide grooves are provided in plurality and are arranged to be spaced apart from each other in a radial direction.

8. An electric machine according to claim 1,

Wherein a bushing made of an insulating material is arranged between the first hole and the screw member.

9. An electric machine according to claim 1,

Wherein the shaft, the routing member and the rotor are integrally formed.

10. The electric machine of claim 1, comprising:

And a controller disposed inside the second housing and electrically connected to the coil.