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

Technical Field

This embodiment relates to a motor.

Background technique

A motor is a device that converts electrical energy into rotational energy by using the force exerted on a conductor in a magnetic field. Recently, the role of motors has become more important as their use has expanded. In particular, with the rapid development of automotive electrification, the demand for motors used in steering systems, braking systems, and design systems has increased significantly.

Generally, the 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 the housing. The stator is installed in a manner with a gap along the circumference of the rotor. In addition, a coil forming a rotating magnetic field is wound around the stator, interacting with the electricity of the rotor, thereby inducing the rotor to rotate. Therefore, when the rotor rotates, the rotating shaft rotates and generates a driving force.

A bus bar electrically connected to the coil is arranged at the upper end of the stator. The bus bar generally includes an annular bus bar case and a bus bar terminal, and the coil is connected to the bus bar terminal by being coupled to the bus bar case.

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 location of the coil connection end.

The rotating shaft may be rotatably supported by a bearing inside the housing. At this time, the bearing may be arranged to be supported in the housing, or may be installed by press-fitting into the busbar housing.

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

Summary of the invention

technical problem

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

Furthermore, it is intended to provide a motor that can effectively mitigate external shock or vibration.

Technical solutions

The motor according to this embodiment includes: a first shell; a stator arranged in the first shell, with a coil wound on the stator; a rotor arranged inside the stator; an axis arranged in the center of the rotor; a second shell arranged in the upper part of the first shell; and a router arranged on the stator and having an axis arranged in the center, wherein the router includes a first hole, wherein the first shell includes a second hole facing the first hole, wherein the second shell includes a third hole facing the first hole and the second hole, and wherein a threaded member connected to 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 shell includes a second upper surface portion arranged on the upper surface of the first upper surface portion, a second side surface portion disposed on the side surface of the first upper surface portion, and a second lower surface portion arranged on the lower surface of the first upper surface portion, wherein the third hole is arranged on the second lower surface portion.

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

A groove having a shape more concave in the radial direction than other regions is arranged on the second upper surface portion, and an end portion of the protruding portion may be coupled to the groove.

A guide groove in which the coil is coupled 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 threaded 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.

Beneficial Effects

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

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

Furthermore, there is also an advantage that a packaging member can be arranged between a plurality of housings to prevent external impact from being transmitted to components inside the motor.

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

Furthermore, since the packaging 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, thereby having advantages of improving assemblability and reducing manufacturing costs by reducing the number of parts.

BRIEF DESCRIPTION OF THE 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 cross-sectional view of a motor according to a first embodiment of the present invention.

FIG. 4 is an enlarged view of 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 cross-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 packaging member according to a second embodiment of the present invention.

Detailed ways

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 can be implemented in various forms, and one or more constituent elements can be selectively combined or replaced between the embodiments within the scope of the technical idea of the present invention.

In addition, unless explicitly defined and described, the terms (including technical terms and scientific terms) used in the embodiments of the present invention may be interpreted as meanings that can be generally understood by those skilled in the art, and common terms, such as terms defined in dictionaries, may be interpreted in consideration of the meaning of the context of the prior art.

Furthermore, the terms used in this specification are for describing the embodiments and are not intended to limit the present invention.

In this specification, the singular form may include the plural form unless otherwise specified 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 combinations of all combinations of A, B and C.

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

Furthermore, when a component is described as being “connected,” “coupled,” or “interconnected” with another component, the component is not only directly connected, coupled, or interconnected with the other component but may also include a case where the other component is “connected,” “coupled,” or “interconnected” between other components.

Furthermore, when described as being formed or arranged “on” or “below” each component, “on” or “below” means that it includes not only a case where two components are in direct contact, but also a case where one or more other components are formed or arranged between the two components. Furthermore, when expressed as “on” or “below”, both the upward direction and the downward direction based on one component can be included.

The motor according to the present invention may be arranged inside a vehicle. For example, the motor according to the present invention may be a component of a controller in a vehicle.

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

1 to 5 , the motor 10 according to the 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 member 300 .

The upper surface of the first housing 200 may be open. The first housing 200 may accommodate the stator 210 , the rotor 230 , and the routing member 300 therein. 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 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 a routing member 300.

The rotor 230 may be arranged 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 magnet 230 may be arranged on the outer peripheral surface of the rotor core. The magnet 230 may be arranged to face the coil 220. Therefore, due to the electromagnetic interaction between the magnet 230 and the coil 220, the rotor 230 may rotate with the shaft 250.

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 a lower surface of the first housing 200.

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

The second housing 100 may be arranged on 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 an open upper surface and a lower surface. 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 the upper surface of the first upper surface portion 204, a second side surface portion 102 coupled to the side surface of the first upper surface portion 204, and a second lower surface portion 104 coupled to the 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 an approximate letter The cross-sectional shape of , therefore, it can be coupled to surround the first upper surface portion 204.

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

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

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

The routing member 300 may include a routing member body 310. The routing member body 310 has a circular cross section and may have a predetermined thickness. A hole for the shaft 250 to pass through may be formed in the center of the routing member body 310. A protruding area 314 protruding upward may be formed in the center of the upper surface of the routing member body 310, and the upper bearing 262 may be arranged at the lower part of the protruding area 314. A reinforcing rib 316 may be arranged on the side surface of the protruding area 314 to strengthen the rigidity of the protruding area 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 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 routing member body 310.

A plurality of guide grooves may be separated by different sidewalls. For example, the routing member body 310 may include a first sidewall forming an edge region of the routing member 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. Therefore, the plurality of guide grooves may include a first guide groove disposed between the first sidewall and the second sidewall 322, a second guide groove disposed between the second sidewall 322 and the third sidewall 324, and a third guide groove disposed between the third sidewall 324 and the fourth sidewall 326.

A first coil of a first polarity may be arranged in the first guide slot. A second coil of a second polarity different from the first polarity may be arranged in the second guide slot. A third coil of a third polarity different from the first polarity and the second polarity may be arranged in the third guide slot.

Meanwhile, a groove 319 may be formed on the first side wall disposed at the outermost side so as to allow the first to third coils to enter the first to third guide grooves, respectively.

Therefore, the first to third coils are each arranged 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 the 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. Therefore, the controller may be electrically connected to the bus bars 410, 420, and 430 through the terminal guide 180. Therefore, the motor 10 may be controlled by the controller.

The routing member 300 may be coupled to the first housing 200 and the second housing 100. To this end, the routing member 310 may include a protrusion 330. The protrusion 330 may have a shape that protrudes radially outward from the outer surface of the routing member body 310. A plurality of protrusions 330 may be provided and radially arranged relative to the routing member body 310. The plurality of protrusions 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 that penetrates 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 having a shape more concave outward in a radial direction than other regions may be formed in the second upper surface portion 106 of the second housing 100. At least a portion of the protrusion 330 may be coupled to the groove 108. The groove 108 may receive an end of the protrusion 330.

A second hole penetrating from the upper surface to the lower surface may be formed in the first upper surface portion 204 of the first housing 200, which faces the groove 108 in the vertical direction. The second hole may be arranged to face the first hole 332 in the 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 arranged to face the first hole 332 and the second hole in a vertical direction. The third hole may be a groove depressed downward from the upper surface of the second lower surface 104.

Therefore, the threaded member 390 is coupled downward from the upper region of the second upper surface portion 106 so that the routing member 300, the first housing 200 and the second housing 100 can be coupled to each other. In this case, the threaded member 390 can pass through the second hole and the first hole 332 in sequence and be threadedly coupled to 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 threaded member 390. The bushing 340 may be formed along the upper surface of the protruding portion 330, the inner surface of the first hole 332, and the lower surface of the protruding portion 330.

According to the above structure, in the integrated structure of the routing member 300, since the rotor 240 and the shaft 250, the routing member 300 and the first shell 200 are compactly connected to the second shell 100, the parts for fixing the routing member can be omitted, thereby having the advantage of reducing the number of parts and assembly time.

In addition, the components inside the motor (including the routing member 300) can be firmly fixed inside the housings 100 and 200, which has the advantage of preventing the different parts from being separated due to external impact.

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

Figure 6 is a stereoscopic diagram showing the appearance of a motor according to a second embodiment of the present invention; Figure 7 is a sectional view of a motor according to a second embodiment of the present invention; Figure 8 is an exploded stereoscopic diagram of a motor according to a second embodiment of the present invention; and Figure 9 is a view for explaining the connection structure of a second shell and a packaging component according to the second embodiment of the present invention.

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 routing member 1280 .

The upper surface of the first housing 1200 may be open. The first housing 1200 may accommodate the stator 1210 , the rotor 1240 , and the routing member 1280 therein. 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 in the shape of a can with 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 routing member 1280. The first upper surface portion 1206 may be bent outward from the 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 therethrough.

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 routing member 1280 .

The rotor 1240 may be arranged 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 arranged on the outer peripheral surface of the rotor core. The magnet 1250 may be arranged to face the coil 1220. Therefore, due to the electromagnetic interaction between the magnet 1250 and the coil 1220, the rotor 1240 may rotate with the shaft 1260.

The shaft 1260 is coupled to the center of the rotor 1240 and may rotate together with the 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 a lower surface of the first housing 1200.

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

The second housing 1100 may be arranged on the 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 an open upper surface and a lower surface. 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 the upper surface of the second housing 1100 may be arranged on the upper portion of the second housing 1100. In addition, a printed circuit board 1330 and a connector 1320 may be arranged between the cover 1300 and the second housing 1100. The printed circuit board 1330 may be arranged in a space inside the second housing 1100. Therefore, when the external terminal is coupled to the connector, components inside the motor 20 may 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 to the cover 1300.

A hole 1110 coupled to the first shell 1200 may be formed on the lower surface of the second shell 1100. The hole 1110 may form a first area 1120 and a second area 1130, the first area forming a first diameter and the second area forming a second diameter smaller than the first diameter. The first area 1120 and the second area 1130 may both be formed in a circular shape. The second area 1130 may be arranged at the lower portion of the first area 1120. The second area 1130 may have a stepped shape in which a portion of the inner surface of the first area 1120 protrudes inwardly. When the first shell 1200 and the second shell 1100 are coupled, the lower surface of the first upper surface portion 1206 of the first shell 1200 contacts the upper surface of the second area 1130, and a portion of the outer surface of the first side portion 1203 may be arranged to face the inner surface of the second area 1130. When viewed from the side surface, the cross-sectional shape of the second area 1130 may have a shape similar to the letter ". The cross-sectional shape of .

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 the region where the bottom surface of the first groove 1122 is formed, a second groove 1135 (see FIG. 9) that is more depressed downward from the upper surface of the second region 1130 than other regions may be formed. A bushing 1500 may be arranged inside the second groove 1135. The bushing 1500 is formed in a ring shape and may include a first hole 1510 (see FIG. 9) located in the center. A thread or a thread groove may be formed on the inner surface of the first hole 1510.

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

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

The routing member 1280 may include a routing member body. The routing member body has a circular cross section and may have a predetermined thickness. A hole for the shaft 1260 to pass through may be formed in the center of the routing member body. A protruding area 1282 protruding upward may be formed in the center of the upper surface of the routing member body, and the upper bearing may be arranged at the lower part of the protruding area 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 routing member body.

The plurality of guide grooves may be separated by different sidewalls. For example, the routing member body may include a first sidewall forming an edge region of the routing member 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. Thus, 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.

A first coil of a first polarity may be arranged in the first guide slot. A second coil of a second polarity different from the first polarity may be arranged in the second guide slot. A third coil of a third polarity different from the first polarity and the second polarity may be arranged in the third guide slot.

Meanwhile, grooves (not shown) 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.

Therefore, the first to third coils are each arranged in the first to third guide grooves, and both ends of each of the first to third coils can 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 can 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. Therefore, the controller can be electrically connected to the bus bar 1284 through the terminal guide 1286. Therefore, the motor 20 can be controlled by the controller.

The routing member 1280 can be coupled to the first housing 1200 and the second housing 1100. To this end, the routing member 1280 may include a protrusion 1290. The protrusion 1290 may have a shape that protrudes radially outward from the outer surface of the routing member body 1310. The protrusion 1290 may be provided in plurality and arranged radially relative to the routing member body 1310. The plurality of protrusions 1290 may be arranged to be spaced apart from each other in the circumferential direction. The end of the protrusion 1290 may protrude more outwardly than the outer surface of the first upper surface portion 1206 of the first housing 1200.

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

In addition, 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 of the first upper surface portion 1206 to the lower surface, and may be arranged to face the first hole 1510 and the second hole 1292 in a vertical direction.

Therefore, the threaded member may pass through the second hole 1292 and the third hole 1207 and be threadedly coupled to the first hole 1510 , and thus, the first housing, the second housing 1100 , and the routing member 1280 may be securely coupled to each other.

Meanwhile, the motor 20 may include a packaging member 1400. The packaging member 1400 may be disposed between the first housing 1200 and the second housing 1100. The packaging 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 package member 1400 may have letters 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 to be perpendicular to each other.

The second side surface portion 1410 may be disposed at an outer side 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 an 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 that is more recessed inwardly than other regions to allow a threaded member to pass therethrough.

According to the above structure, there is an advantage in that the packaging member 1400 can be disposed between the first housing 1200 and the second housing 1100 to prevent external impact from being transmitted to the internal components of the motor.

In detail, the packaging member 1400 may absorb vibrations and shocks generated in various directions by including a plurality of mutually perpendicular regions, thereby protecting components inside the motor.

In addition, since the packaging member 1400 and the second shell 1100 are formed integrally, and the first shell 1200, the second shell 1100 and the routing member 1280 are connected to each other by a single threaded member, there are advantages of improving assemblability and reducing manufacturing costs due to a reduction in the number of parts.

In the above description, it is described that all components constituting the embodiments of the present invention are combined together or operated as one, but the present invention is not necessarily limited to these embodiments. In other words, within the scope of the present invention, all components can be selectively operated in combination with one or more components. In addition, unless otherwise specifically stated, the terms "including", "comprising" or "having" described above mean that the corresponding components can be inherent, and therefore should be understood as not excluding other components, but also including other components. Unless otherwise defined, all terms (including technical terms and scientific terms) have the same meanings as those of ordinary skill in the art are generally understood. Commonly used terms (such as terms defined in dictionaries) should be interpreted as being consistent with the contextual meaning of the prior art, and unless clearly defined in the present invention, should not be interpreted in an ideal or overly formal sense.

The above description is merely an illustration of the technical idea of the present invention, and those skilled in the art to which the present invention belongs may make various modifications and changes without departing from the basic features 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 to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as included within 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.