Motor

Abstract

This motor comprises: a housing comprising a first side plate; a cover comprising a second side plate coupled to the first side plate; a heat dissipation member which is provided in a space in the housing and the cover, and comprises a second upper plate and a third side plate extending downward from the edge of the second upper plate; a first substrate disposed on one surface of the second upper plate; and a second substrate disposed on the other surface of the second upper plate, wherein a coupling recess to which the first side plate is coupled is provided in the lower surface of the second side plate, which faces the upper end of the first side plate, and the outer surface of the third side plate is in contact with the inner surface of the first side plate.

Description

motor

[0001] This embodiment relates to a motor.

[0002]

[0003] A motor is a device that converts electrical energy into rotational energy by utilizing the force exerted on a conductor within a magnetic field. Recently, as the applications of motors have expanded, their role has become increasingly important. In particular, with the rapid advancement of automotive electrification, the demand for motors used in steering systems, braking systems, and assembly systems has increased significantly.

[0004] A motor is a device comprising a housing, a stator disposed within the housing, and a rotor disposed within the stator, which generates rotational motion through the electromagnetic interaction between the stator and the rotor. Specifically, a coil is wound on the stator, and a magnet is disposed on the rotor to face the coil, so that the rotor can rotate through the action of the coil and the magnet. A shaft is disposed in the center of the rotor, and the shaft can rotate together with the rotation of the rotor.

[0005] A control unit for controlling the components within the motor can be placed on the stator and rotor along with a printed circuit board. Although the components within the motor can be placed within a single housing for miniaturization, heat generated by the operation of the components is not easily dissipated, and the generated heat can cause an overload on each component, which can impair the setting function and lead to failure.

[0006]

[0007] The present invention provides a motor that allows for easy connection between multiple components and improves heat dissipation efficiency.

[0008]

[0009] A motor according to the present embodiment comprises: a housing including a first side plate; a cover including a second side plate coupled to the first side plate; a heat dissipation member disposed in the space within the housing and the cover, and including a second top plate and a third side plate extending downward from the edge of the second top plate; a first substrate disposed on one surface of the second top plate; and a second substrate disposed on the other surface of the second top plate, wherein a coupling groove into which the first side plate is coupled is disposed on the lower surface of the second side plate facing the upper surface of the first side plate, and the outer surface of the third side plate contacts the inner surface of the first side plate.

[0010] The first side plate includes a first region and a second region disposed on the first region, the cross-sectional area of ​​the second region is larger than the cross-sectional area of ​​the first region, the first region is coupled to the coupling groove, and the outer surface of the third side plate can be in contact with the inner surface of the second region.

[0011] At least one electronic component is disposed on the second substrate, and the second substrate may be in surface contact with the second upper plate.

[0012] A protrusion may be disposed on the upper surface of the second upper plate, protruding upward and in contact with the second substrate.

[0013] A first connector is disposed on the upper surface of the first substrate, and a second connector coupled to the first connector is disposed on the lower surface of the second substrate, and the second upper plate may be provided with a through hole through which the first connector or the second connector passes.

[0014] The first substrate includes a first hole, the second substrate includes a second hole that overlaps the first hole in the vertical direction, the cover includes a third hole that overlaps the first hole and the second hole in the vertical direction, the heat dissipation member includes a fourth hole that overlaps the first hole, the second hole, and the third hole in the vertical direction, and may include a screw that penetrates the first hole, the second hole, and the fourth hole and is screw-coupled to the third hole.

[0015] The apparatus includes a stator disposed within the housing; a rotor disposed within the stator; a shaft coupled to the center of the rotor; and a sensor magnet disposed on the upper end of the shaft facing the first substrate, wherein a sensor facing the sensor magnet in an up-and-down direction may be disposed on the lower surface of the first substrate.

[0016] The device includes a coil wound on the stator and a terminal electrically connected to the coil, wherein the terminal can be electrically connected to the second substrate by penetrating the first substrate and the heat dissipation member.

[0017] Based on the vertical direction, the contact length between the outer surface of the third side plate and the inner surface of the first side plate may be longer than the length of the coupling groove.

[0018] A guide projection protruding inward is disposed on the inner surface of the second side plate, and a guide groove coupled with the guide projection may be disposed on the side of the heat dissipation member or the side of the second substrate.

[0019]

[0020] In this embodiment, in the coupling structure between the housing and the cover through the coupling groove and the side wall, by adding a press-fit structure for the heat dissipation member within the housing, there is an advantage that the connection between multiple components can be made more robust.

[0021] In addition, by forming a surface contact structure between the housing and the heat dissipation member having multiple substrates arranged therein, there is an advantage that heat within the multiple substrates can be more easily discharged to the outside.

[0022]

[0023] FIG. 1 is a perspective view illustrating the external appearance of a motor according to an embodiment of the present invention.

[0024] FIG. 2 is a cross-sectional view of a motor according to an embodiment of the present invention.

[0025] FIG. 3 is an exploded perspective view of a motor according to an embodiment of the present invention.

[0026] FIG. 4 is a drawing of FIG. 3 shown from a different angle.

[0027] FIG. 5 is a drawing showing an enlarged view of one area of ​​FIG. 2.

[0028] FIGS. 6 to 13 are drawings for explaining the assembly process of a motor according to an embodiment of the present invention.

[0029]

[0030] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0031] However, the technical concept of the present invention is not limited to some of the described embodiments but can be implemented in various different forms, and within the scope of the technical concept of the present invention, one or more of the components among the embodiments may be selectively combined or substituted.

[0032] In addition, terms used in the embodiments of the present invention (including technical and scientific terms) may be interpreted in a sense that is generally understood by those skilled in the art to which the present invention belongs, unless explicitly and specifically defined otherwise. Terms that are commonly used, such as terms defined in advance, may be interpreted in consideration of their meaning in the context of the relevant technology.

[0033] Additionally, 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 include the plural form unless specifically stated otherwise in the text, and when described as “at least one of A and B and C (or more than one),” it may include one or more of all combinations that can be combined with A, B, and C.

[0034] In addition, terms such as first, second, A, B, (a), (b), etc. may be used when describing the components of the embodiments of the present invention.

[0035] These terms are intended merely to distinguish a component from other components and are not limited by the essence, order, sequence, etc. of the component.

[0036] And, where it is stated that a component is 'connected', 'combined', or 'joined' to another component, this may include not only cases where the component is directly connected, combined, or joined to the other component, but also cases where it is 'connected', 'combined', or 'joined' due to another component located between the component and the other component.

[0037] Furthermore, when described as being formed or placed "above or below" each component, "above" or "below" includes not only cases where two components are in direct contact with each other, but also cases where one or more other components are formed or placed between the two components. Additionally, when expressed as "above or below," it may include the meaning of a downward direction as well as an upward direction relative to a single component.

[0038] FIG. 1 is a perspective view showing the exterior of a motor according to an embodiment of the present invention, FIG. 2 is a cross-sectional view of a motor according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of a motor according to an embodiment of the present invention, FIG. 4 is a drawing showing FIG. 3 from a different angle, FIG. 5 is a drawing showing an enlarged view of one area of ​​FIG. 2, and FIG. 6 to 13 are drawings for explaining the assembly process of a motor according to an embodiment of the present invention.

[0039] Referring to FIGS. 1 to 5, a motor (10) according to an embodiment of the present invention may include a housing (100), a cover (200), a substrate module (300), and a heat dissipation member (400).

[0040] The motor (10) may include a housing (100). The housing (100) may be formed in a cylindrical shape. A space (110) is formed within the housing (100), and the space (110) may be opened upward before the cover (200) is attached. The material of the housing (100) may be metal or plastic.

[0041] The housing (100) may include a plurality of regions arranged along the axial direction. For example, the housing (100) may include an upper region (104) and a lower region (106) arranged below the upper region (104). The upper region (104) and the lower region (106) may have different cross-sectional areas, but are not limited thereto. For example, the cross-sectional area of ​​the upper region (104) may be larger than the cross-sectional area of ​​the lower region (106). A flange portion (102) having a shape that protrudes outwardly from other regions is arranged on the outer surface of the housing (100), and the upper region (104) and the lower region (106) may be divided axially from each other based on the flange portion (102).

[0042] As illustrated in FIG. 2, a stator (120), a rotor (130) disposed within the stator (120), and a shaft (140) may be disposed in the space (110) within the housing (100). The stator (120) and the rotor (130) may be disposed inside the upper region (104).

[0043] The stator (120) may be placed on the inner surface of the space (110) within the housing (100). The stator (120) may include a stator core, an insulator (not shown) placed on the outer surface of the stator core, and a coil (122) wound on the outer surface of the stator core and the insulator.

[0044] The rotor (130) may be positioned inside the stator (120) within the space (110) of the housing (100). The rotor (130) may include a rotor core and a magnet (132) positioned on the outer surface of the rotor core. Accordingly, the rotor (130) may rotate due to electromagnetic interaction between the magnet (132) and the coil (122). A hole to which a shaft (140) is coupled may be formed in the center of the rotor core.

[0045] The shaft (140) may be positioned at the center of the rotor (130). The shaft (140) may be positioned to penetrate the rotor core. The shaft (140) may rotate together with the rotor (130). In an embodiment, the axial direction may be the longitudinal direction of the shaft (140). One end and the other end of the shaft (140) may extend upward and downward, respectively, of the housing (100). The end of the shaft (140) may extend to the lower region (106) of the housing (100), and a configuration for transmitting the rotational driving force of the shaft (140) may be positioned in the lower region (106). As an example, the configuration for transmitting the rotational driving force through the shaft (140) may be a pump. Accordingly, the pump may operate by transmitting the rotational driving force of the shaft (140).

[0046] A sensor magnet (145) may be disposed at one end of the shaft (140) facing the cover (200) and the substrate module (300). Accordingly, the position of the rotor (130) and the shaft (140) can be detected by detecting the change in the magnetic field of the sensor magnet (145) that occurs according to the rotation of the shaft (140). The sensor magnet (145) may be disposed facing the sensor (320) to be described later in the axial direction.

[0047] As illustrated in FIGS. 2 and 3, the housing (100) may include a first side plate (170). The inner surface of the first side plate (170) may form the inner surface of the space (110) within the housing (100). A stator (120) may be disposed on the inner surface of the first side plate (170). The upper end of the first side plate (170) may be disposed axially opposite to the cover (200).

[0048] Based on a horizontal direction perpendicular to the axial direction, the first side plate (170) may include a plurality of regions with different cross-sectional areas. The first side plate (170) may include a first region (171) having a first cross-sectional area and a second region (172) having a second cross-sectional area larger than the first cross-sectional area. The cross-sectional area of ​​the space (110) within the housing (100) that is horizontally superimposed with the first region (171) may be smaller than the cross-sectional area of ​​the space (110) within the housing (100) that is horizontally superimposed with the second region (172). The outer surface of the second region (172) may be arranged so as to be stepped outward in the horizontal direction compared to the outer surface of the first region (171). The second region (172) may be arranged on top of the first region (171). An inclined surface (173) may be disposed on the outer surface and / or inner surface of the first side plate (170), between the first region (171) and the second region (172), and connecting the outer surface of the first region (171) and the outer surface of the second region (172), and the inner surface of the first region (171) and the inner surface of the second region (172). The inclined surface (173) may have a shape in which the horizontal cross-sectional area increases as it goes from the first region (171) to the second region (172).

[0049] The motor (10) may include a cover (200). The cover (200) may be attached to the housing (100). By attaching the cover (200), the upper surface of the space (110) inside the housing (100) may be covered. The cover (200) may be made of metal or plastic.

[0050] The cover (200) may include a first top plate (220) and a second side plate (210) extending downward from the edge of the first top plate (220).

[0051] A plurality of stepped regions in the vertical direction may be arranged on the upper surface of the first plate (220). For example, a connector outlet (290) may be arranged on the first plate (220). The connector outlet (290) may have a shape that protrudes upward from the upper surface of the first plate (220) more than other regions, and may have a pipe shape such that a connector pin (294, see FIG. 6) is arranged inside. A protrusion (282) may be arranged on the first plate (220). A coupling groove (280) with a shape that is concave upward from other regions may be arranged on the lower surface of the first plate (220) corresponding to the formation area of ​​the protrusion (282). At least a portion of an electronic component (380), which will be described later, may be coupled inside the coupling groove (280). As illustrated in FIG. 3, a coupling portion (240) having a third hole (242) formed on the lower surface of the first top plate (220) is disposed therein, and the upper surface of the first top plate (220) corresponding to the area formed by the coupling portion (240) may have a shape that protrudes upward from other areas. The coupling portion (240) may also have a shape that protrudes downward from the lower surface of the first top plate (220).

[0052] At least a portion of the substrate module (300) and the heat dissipation member (400) may be disposed in the space within the cover (200) formed by the lower surface of the first top plate (220) and the inner surface of the second side plate (210).

[0053] Based on a horizontal direction perpendicular to the axial direction, the second side plate (210) may include a plurality of regions with different cross-sectional areas. The second side plate (210) may include a third region (212) having a third cross-sectional area and a fourth region (214) having a fourth cross-sectional area larger than the third cross-sectional area. The outer surface of the fourth region (214) may be arranged to be stepped outward in the horizontal direction compared to the outer surface of the third region (212). The third region (212) may be arranged above the fourth region (214).

[0054] The lower surface of the second side plate (210) may be positioned to face the upper surface of the first side plate (170) of the housing (100) in the vertical direction. On the lower surface of the second side plate (210) that overlaps the upper surface of the first side plate (170) in the vertical direction, a coupling groove (216) with a shape that is concave upward from other areas may be positioned. At least a portion of the first side plate (170) may be coupled to the coupling groove (216). The coupling groove (216) may be positioned on the lower surface of the fourth area (214). The upper end of the second area (172) of the first side plate (170) may be coupled to the coupling groove (216). Based on the coupling groove (216), a plurality of side walls (217, 218, see FIG. 6) may be arranged on the lower surface of the second side plate (210), and the coupling groove (216) may be arranged between the plurality of side walls (217, 218). When the first side plate (170) is coupled within the coupling groove (216), at least a portion of the first side plate (170) may be arranged to overlap horizontally with the plurality of side walls (217, 218). As shown in FIG. 5, the side wall (217) arranged on the inner side among the plurality of side walls (217, 218) may be arranged to overlap vertically with the first area (171) of the housing (100). Among the multiple side walls (217, 218), the side wall (217) positioned on the inner side can be named the first side wall, and the side wall positioned on the outer side of the first side wall can be named the second side wall.

[0055] A sealing member (not shown) may be disposed in the joint groove (216). The sealing member is disposed between the first side plate (170) and the second side plate (210) to prevent external foreign matter from entering the space (110) inside the housing (100) through the space between the housing (100) and the cover (200). The sealing member (not shown) may be a heat- or light-curing adhesive. For example, the sealing member may be epoxy. The sealing member may also be called an adhesive member in that it joins the housing (100) and the cover (200).

[0056] Meanwhile, a guide projection (270) with an inwardly protruding shape may be disposed on the inner surface of the side plate (210). A plurality of guide projections (270) may be provided and arranged facing each other with respect to the center of the cover (200). The guide projection (270) may be coupled with a guide groove (470) of a heat dissipation member (400) to be described later. Accordingly, the coupling of the heat dissipation member (400) within the cover (200) may be guided.

[0057] The motor (10) may include a substrate module (300). The substrate module (300) may be placed within a space formed by the combination of the housing (100) and the cover (200). The substrate module (300) may include a plurality of substrates. The substrate module (300) may include a first substrate (310) and a second substrate (360). The first substrate (310) and the second substrate (360) may be arranged in an up-and-down direction. The first substrate (310) and the second substrate (360) may be arranged spaced apart in an up-and-down direction.

[0058] The first substrate (310) may be a printed circuit board. The first substrate (310) may be placed in the space (110) within the housing (100). The first substrate (310) may be placed so as to overlap horizontally with the first side plate (170).

[0059] Electronic components for driving the motor (10) may be disposed on one side and the other side of the first substrate (310), respectively. For example, a sensor (320) may be disposed on the lower surface of the first substrate (310) facing the shaft (140). The sensor (320) may be disposed axially opposite to the sensor magnet (145). The sensor (320) detects changes in the magnetic field of the sensor magnet (145) due to the rotation of the shaft (140), thereby allowing the rotor (130) and the shaft (140) to be positioned.

[0060] The first substrate (310) may have a circular cross-sectional shape in which an avoidance groove (319) is formed on a part of the outer surface. For example, the first substrate (310) may have a D-cut cross-sectional shape. The avoidance groove (319) is formed concavely inwardly from the side of the first substrate (310) in a radial direction to form a placement area for the terminal (160) to be described later.

[0061] The first substrate (310) may include a first hole (330). The first hole (330) may have a shape that penetrates from the upper surface to the lower surface of the first substrate (310). The first hole (330) may be provided in multiple numbers and arranged oppositely with respect to the center of the first substrate (310). A screw (S), to be described later, may be arranged to penetrate the first hole (330).

[0062] The second substrate (360) may be a printed circuit board. The second substrate (360) may be placed on top of the first substrate (310). The second substrate (360) may be placed spaced apart from the first substrate (310) in the vertical direction. The second substrate (360) may be placed in the space within the cover (200). The second substrate (360) may be placed overlapping the second side plate (310) in the horizontal direction.

[0063] The second substrate (360) may have a circular cross-sectional shape. The cross-sectional areas of the first substrate (310) and the second substrate (360) may differ from each other. For example, the cross-sectional area of ​​the second substrate (360) may be larger than the cross-sectional area of ​​the first substrate (310). Based on the heat dissipation member (400) to be described later, the first substrate (310) is placed in the space within the heat dissipation member (400), and the second substrate (360) is placed on the heat dissipation member (400). Therefore, the cross-sectional area of ​​the second substrate (360) can be formed larger than the cross-sectional area of ​​the first substrate (310), thereby securing a large space for component placement. Additionally, based on the heat dissipation member (400), a plurality of substrates can be compactly combined.

[0064] Electronic components for driving the motor (10) may be disposed on one side and the other side of the second substrate (360), respectively. For example, an electronic component (380) may be disposed on the upper surface of the second substrate (360), and at least a portion of it may be accommodated within the coupling groove (280) of the aforementioned cover (200). Between the bottom surface of the coupling groove (280) and the upper surface of the electronic component (380), a thermal conductive layer (not shown), which is a material with excellent thermal conductivity, may be disposed so that heat from the electronic component (380) can be transferred to the cover (200). Multiple electronic components (380) may be provided. The electronic component (380) may have a predetermined length in the vertical direction. The vertical length of the electronic component (380) may be longer than the thickness of the second substrate (360). The electronic component (380) placed on the second substrate (360) can generate heat by driving.

[0065] The second substrate (360) may include a pinhole (366). The pinhole (366) may have a shape that penetrates from the upper surface to the lower surface of the second substrate (360). The pinhole (366) may be coupled with a connector pin (294). The connector pin (294) may be coupled by a press fit or soldering method within the pinhole (366). The connector pin (294) and the pinhole (366) may each be provided in multiple numbers. Accordingly, when the external terminal is coupled within the connector lead portion (290), the second substrate (360) and the external terminal can be electrically connected. Accordingly, power may be supplied to the motor (10), or electrical signals related to the operation of the motor (10) may be transmitted and received.

[0066] The second substrate (360) can be electrically connected to the coil (122). The motor (10) includes a terminal (160) for connecting the second substrate (360) and the coil (122), and one end of the terminal (160) is electrically connected to the coil (122), and the other end can be connected to a terminal hole (364). The terminal hole (364) has a hole shape that penetrates from one side of the second substrate (360) to the other side, and the terminal (160) can be connected by a press fit or soldering method within the terminal hole (364). Accordingly, by the electrical connection between the second substrate (360) and the coil (122) through the terminal (160), a current signal for electromagnetic interaction with the magnet (140) can be provided to the coil (122). Meanwhile, as described above, the first substrate (310) positioned between the second substrate (360) and the coil (122) may be provided with an avoidance groove (319) through which the terminal (160) passes. Additionally, the heat dissipation member (400) may also be provided with a through hole (413) through which the terminal (160) passes.

[0067] The first substrate (310) and the second substrate (360) can be electrically connected. The first substrate (310) and the second substrate (360) can be mutually coupled by a connection between the first connector (340) and the second connector (350), respectively. The first connector (340) and the second connector (350) are respectively placed on the upper surface of the first substrate (310) and the lower surface of the second substrate (360), and may be Board to Board (BTOB) connectors for electrically and physically connecting a plurality of substrates. The first connector (340) and the second connector (350) are arranged facing each other in the vertical direction and can be mutually coupled through the through hole (412) of the heat dissipation member (400) to be described later.

[0068] The second substrate (360) may include a second hole (362). The second hole (362) may have a shape that penetrates from the upper surface to the lower surface of the second substrate (360). The second hole (362) may be arranged to overlap the first hole (330) of the first substrate (310) in the vertical direction. The second hole (362) may be provided in multiple numbers and arranged opposite each other with respect to the center of the second substrate (360). A screw (S), to be described later, may be arranged to penetrate the second hole (362).

[0069] Meanwhile, as described above, the first substrate (310) may have a smaller cross-sectional area than the second substrate (360). Accordingly, the first hole (330) may have a concave groove shape in the radial direction from the side of the first substrate (310), and the second hole (362) may be spaced a predetermined distance in the radial direction from the side of the second substrate (360).

[0070] A guide groove (361) having a concave shape extending inward in a horizontal direction from the side may be disposed on the side of the second substrate (360) so as to be coupled with the guide projection (270) of the cover (200). By coupling between the guide groove (361) and the guide projection (270), the coupling direction of the second substrate (360) within the cover (200) can be guided.

[0071] The motor (10) may include a heat dissipation member (400). The heat dissipation member (400) may be disposed between the housing (100) and the cover (200). The heat dissipation member (400) may be disposed between the first substrate (310) and the second substrate (360). At least a portion of the heat dissipation member (400) may be disposed so as to overlap horizontally with the housing (100), and the remaining portion may be disposed so as to overlap horizontally with the cover (200).

[0072] The heat dissipation member (400) can be formed of a metal material.

[0073] The heat dissipation member (400) may include a second top plate (410) and a third side plate (450) extending downward from the edge of the second top plate (410).

[0074] The second plate (410) has a circular cross-sectional shape and can be placed in the space within the cover (200). The second plate (410) may include a plurality of through holes (412, 413). Each of the plurality of through holes (412, 413) has a shape that penetrates from the upper surface to the lower surface of the second plate (410) and may be arranged spaced apart from each other in the horizontal direction. The plurality of through holes (412) may include a first through hole (412) and a second through hole (413). A first connector (340) or a second connector (350) may be arranged to pass through the first through hole (412). A terminal (160) may be arranged to pass through the second through hole (143).

[0075] The second upper plate (410) may include a fourth hole (432) penetrating from the upper surface to the lower surface. The fourth hole (432) may be arranged to overlap in the vertical direction with the first hole (330) of the first substrate (310), the second hole (362) of the second substrate (360), and the third hole (242) of the cover (200). A coupling part (430) may be arranged on the lower surface of the second upper plate (410), protruding downward from other areas, with the fourth hole (432) formed on the lower surface. The coupling part (430) may come into contact with the upper surface of the first substrate (310). Accordingly, a screw coupling structure through a screw (S) between the first substrate (310), the heat dissipation member (400), the second substrate (360), and the cover (200) may be implemented. Specifically, the screw (S) includes a head portion and a fastening portion protruding from the head portion, and the fastening portion can be screw-coupled to a third hole (242) disposed on the lower surface of the cover (200) by penetrating the first hole (330), the fourth hole (432), and the second hole (362). In this case, the head portion of the screw (S) can be positioned so that its upper surface contacts the lower surface of the first substrate (310).

[0076] A groove (452) may be formed in the third side plate (470) that penetrates horizontally from the inner surface to the outer surface. The head of the screw (S) may be positioned to penetrate the groove (452).

[0077] The second substrate (360) may be placed on the second top plate (410). The lower surface of the second substrate (360) may be in contact with the upper surface of the second top plate (410). The lower surface of the second substrate (360) may be in surface contact with the upper surface of the second top plate (410). On the upper surface of the second top plate (410), a protrusion (418) may be disposed such that at least a portion protrudes upward from other areas and contacts the lower surface of the second substrate (360). Accordingly, heat generated by the operation of the second substrate (360) and electronic components placed on the second substrate (360) can be more easily conducted to the heat dissipation member (400), thereby improving heat dissipation efficiency.

[0078] The third side plate (450) may extend downward from the edge of the second top plate (410). By the inner surface of the third side plate (450) and the lower surface of the second top plate (410), a space for the first substrate (310) to be placed may be formed inside the heat dissipation member (400). The space inside the heat dissipation member (400) may be larger than the cross-sectional area of ​​the first substrate (310). The inner surface of the third side plate (450) may be arranged to overlap horizontally with the side surface of the first substrate (310). A portion of the third side plate (450) may be arranged to overlap horizontally with the cover (200), and the remaining portion may be arranged to overlap horizontally with the housing (100).

[0079] The third side plate (450) may have a predetermined length in the vertical direction. As shown in FIG. 5, the outer surface of the third side plate (450) may come into contact with the inner surface of the housing (100). The outer surface of the third side plate (450) may be joined to the inner surface of the housing (100) by press-fitting. The outer surface of the third side plate (450) may come into contact with the inner surface of the first region (171). The outer surface of the third side plate (450) may come into surface contact with the inner surface of the first region (171). That is, the cross-sectional area of ​​the region formed by the outer surface of the third side plate (450) may be the same as the cross-sectional area of ​​the region formed by the inner surface of the first region (171) of the space (110) inside the housing (100). Additionally, the outer surface of the third side plate (450) may be spaced apart horizontally from the inner surface of the second region (172). In this case, at least a portion of the first side wall (217) of the aforementioned cover (200) may be disposed between the outer surface of the third side plate (450) and the inner surface of the second region (172). In some cases, the horizontal thickness of the first side wall (217) may be equal to the horizontal spacing between the outer surface of the third side plate (450) and the inner surface of the second region (172). Accordingly, the connection between the housing (100), the cover (200), and the heat dissipation member (400) can be made more robustly by the press-fit structure of the first side wall (217) between the outer surface of the third side plate (450) and the inner surface of the second region (172). In addition, since heat conducted to the heat dissipation member (400) through the second substrate (360) can be conducted to the housing (100) through the third side plate (450), the heat dissipation efficiency of the motor (10) can be increased.

[0080] Based on the vertical direction, which is the axial direction, the length of the area where the outer surface of the third side plate (450) and the inner surface of the first side plate (170) are in surface contact may be longer than the length of the coupling groove (216) or the length of the first side wall (170) that overlaps horizontally with the side walls (217, 218). Accordingly, in addition to the primary coupling between the housing (100) and the cover (200) through the sealing member, the generation of vibration within the motor (10) can be minimized through the secondary coupling via press-fitting between the outer surface of the third side plate (450) and the inner surface of the first side plate (170), and heat can be more easily discharged from the heat dissipation member (400) to the housing (100) with a large surface area. Furthermore, since the coupling of the substrate module (300) and the cover (200) through the heat dissipation member (400) can be guided on the housing (100), alignment between multiple components is easy, and in particular, the sensor There is an advantage that the axial overlap structure between the magnet (145) and the sensor (320) can be formed more easily.

[0081] Meanwhile, a guide groove (470) may be disposed on the upper surface of the heat dissipation member (400) facing the cover (200). The guide groove (470) may have a shape that is concave downward from the upper surface of the heat dissipation member (400). A plurality of guide grooves (470) may be provided and arranged to face each other with respect to the center of the heat dissipation member (400). The guide groove (470) may be coupled with the guide projection (270) of the cover (200). Accordingly, the coupling of the heat dissipation member (400) within the space of the cover (200) may be guided.

[0082] Hereinafter, the assembly process of a motor according to an embodiment of the present invention will be described with reference to FIGS. 6 to 13.

[0083] First, as illustrated in FIGS. 6 to 8, a second substrate (360) can be placed on the cover (200). In this case, a connector pin (294) is coupled to the pin hole (366), and the second hole (362) of the second substrate (360) for screw coupling and the third hole (242) of the coupling part (240) of the cover (200) can be aligned in the vertical direction. Additionally, the coupling direction of the substrate (360) inside the cover (200) can be guided by a coupling structure through the guide projection (270) and the guide groove (361) of the second substrate (360).

[0084] Next, as illustrated in FIGS. 9 and 10, a heat dissipation member (400) can be coupled within a cover (200) on which a second substrate (360) is seated. Likewise, the coupling direction of the heat dissipation member (400) can be guided through the coupling of the guide groove (470) of the heat dissipation member (400) and the guide projection (270) of the cover (200) so that the second connector (350), pin hole (366), and second hole (362) of the second substrate (360) each face the first through hole (412), second through hole (413), and fourth hole (432) of the heat dissipation member (400) in the vertical direction.

[0085] Next, as illustrated in FIGS. 11 and 12, a first substrate (310) can be coupled to the heat dissipation member (400). When the first substrate (310) is coupled, the coupling of the first substrate (310) within the heat dissipation member (400) can be guided through a guide on a part of the side of the first substrate (310) through the inner surface of the third side plate (450) of the heat dissipation member (400). Accordingly, the first hole (330) of the first substrate (310) and the fourth hole (432) of the heat dissipation member (400) can be arranged to overlap in the vertical direction. Additionally, the avoidance groove (319) of the first substrate (310) and the second through hole (413) can be arranged to face each other in the vertical direction. Meanwhile, during the process of combining the first substrate (310) and the heat dissipation member (400), an electrical connection structure can be implemented through a plurality of connectors (340, 350) between the first substrate (310) and the second substrate (360) through the first through hole (411) of the heat dissipation member (400).

[0086] After the first substrate (310) is combined within the heat dissipation member (400), as described above, the screw (S) can be screw-coupled to the third hole (242) located on the lower surface of the cover (200) by passing the fastening portion through the first hole (330), the fourth hole (432), and the second hole (362). Accordingly, the plurality of substrates (310, 360) and the heat dissipation member (400) can be firmly coupled to each other with respect to the cover (200).

[0087] Afterwards, a cover (200) having a plurality of substrates (310, 360) and a heat dissipation member (400) combined can be coupled onto a housing (100) to form a connection between the housing (100) and the cover (200). In this case, the first side plate (170) within the coupling groove (216) can be coupled into the coupling groove (216) through a sealing member. Additionally, the outer surface of the third side plate (450) of the heat dissipation member (400) can be coupled to the inner surface of the housing (100) by press-fitting, thereby realizing a surface contact structure for heat dissipation.

[0088] In the foregoing, although all components constituting an embodiment of the present invention have been described as being combined or operating in combination, the present invention is not necessarily limited to such embodiments. That is, within the scope of the purpose of the present invention, all components may be selectively combined in one or more ways. Furthermore, terms such as "include," "constitute," or "have" described above, unless specifically stated otherwise, mean that the relevant component may be inherent; thus, they should be interpreted as allowing for the inclusion of additional components rather than excluding other components. All terms, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains, unless otherwise defined. Terms commonly used, such as those defined in advance, should be interpreted in accordance with their meaning in the context of the relevant technology and should not be interpreted in an ideal or overly formal sense unless explicitly defined in the present invention.

[0089] The above description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Although it has been described above that all components constituting an embodiment of the present invention are combined as one or operate in combination, the present invention is not necessarily limited to such embodiments. That is, within the scope of the purpose of the present invention, all such components may selectively combine and operate in one or more ways. Furthermore, terms such as "include," "constitute," or "have" described above, unless specifically stated otherwise, mean that the corresponding component may be inherent; therefore, they should be interpreted as allowing for the inclusion of additional components rather than excluding other components. All terms, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which this invention pertains, unless otherwise defined. Commonly used terms, such as those defined in advance, should be interpreted as consistent with their meaning in the context of the relevant technology and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this invention.

[0090] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains will be able to make various modifications and variations within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention.

Claims

1. Housing including a first side plate; A cover including a second side plate coupled to the first side plate; A heat dissipation member disposed in the space within the housing and the cover, comprising a second top plate and a third side plate extending downward from the edge of the second top plate; A first substrate disposed on one surface of the second upper plate; and It includes a second substrate disposed on the other side of the second upper plate, and A coupling groove is disposed on the lower surface of the second side plate facing the upper surface of the first side plate to which the first side plate is coupled, and The outer surface of the third side plate is a motor in contact with the inner surface of the first side plate.

2. In Paragraph 1, The first side plate includes a first region and a second region disposed on the first region, and The cross-sectional area of ​​the second region is larger than the cross-sectional area of ​​the first region, and The first region is coupled to the above coupling groove, and The outer surface of the third side plate is a motor in contact with the inner surface of the second region.

3. In Paragraph 1, At least one electronic component is disposed on the second substrate, and The above second substrate is a motor in surface contact with the above second top plate.

4. In Paragraph 3, A motor having a protrusion that protrudes upward on the upper surface of the second plate and contacts the second plate.

5. In Paragraph 1, A first connector is disposed on the upper surface of the first substrate, and A second connector coupled with the first connector is disposed on the lower surface of the second substrate, and The above second plate is a motor having a through hole through which the above first connector or the above second connector passes.

6. In Paragraph 1, The first substrate includes a first hole, and The second substrate includes a second hole that overlaps the first hole in the vertical direction, and The above cover includes a third hole that overlaps the first hole and the second hole in the vertical direction, and The heat dissipation member includes a fourth hole that overlaps the first hole, the second hole, and the third hole in the vertical direction, and A motor comprising a screw that penetrates the first hole, the second hole, and the fourth hole and is screw-coupled to the third hole.

7. In Paragraph 1, A stator disposed within the above housing; A rotor disposed within the above stator; A shaft coupled to the center of the rotor; and It includes a sensor magnet disposed on the upper end of the shaft facing the first substrate, and A motor having a sensor positioned on the lower surface of the first substrate facing the sensor magnet in the vertical direction.

8. In Paragraph 7, It includes a coil wound on the stator and a terminal electrically connected to the coil, The above terminal is a motor electrically connected to the second substrate by penetrating the first substrate and the heat dissipation member.

9. In Paragraph 1, A motor in which, based on the vertical direction, the contact length between the outer surface of the third side plate and the inner surface of the first side plate is longer than the length of the coupling groove.

10. In Paragraph 1, A guide projection protruding inward is disposed on the inner surface of the second side plate, and A motor having a guide groove disposed on the side of the heat dissipation member or the side of the second substrate that engages with the guide projection.

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