Motor

Abstract

The present invention relates to a motor, comprising: a stator including a stator core and a coil wound on the stator core; a busbar unit including a terminal electrically connected to the coil and a holder supporting the terminal; and a support unit supporting the holder with respect to the stator core; thereby, the durability can be improved and the advantageous effect of improving stability and reliability can be obtained.

Description

Technology Field

[0001] The present invention relates to a motor, and more specifically, to a motor capable of improving durability and enhancing stability and reliability. Background Technology

[0003] Hybrid vehicles or electric vehicles, which are called eco-friendly vehicles, generate driving force through an electric motor (hereinafter referred to as a ‘drive motor’) that obtains rotational force from electric energy.

[0004] Generally, a drive motor includes a stator coupled to a housing and a rotor rotatably positioned inside the stator with a certain air gap.

[0005] The stator includes a stator core formed by laminating electrical steel sheets and coils wound on the stator core.

[0006] A busbar is provided at the top of the stator, and the coil is connected to an external power source through the busbar.

[0007] The busbar is formed with a structure containing multiple terminals inside a roughly ring-shaped holder, and the terminals may consist of a combination of phase terminals to which U-phase, V-phase, and W-phase power is connected, and neutral terminals connecting the phase terminals.

[0008] The coil is welded (e.g., by applying current) while pressed against the terminal portion of the terminal, thereby fusing it to the terminal portion of the terminal. After the terminal portion of the terminal is fused with the coil, an insulating material (e.g., epoxy) for insulation between the terminals is applied to cover the terminal portion of the terminal.

[0009] Meanwhile, if vibration occurs in the motor or an external shock is applied, there is a problem in that the fusing part of the coil, which has weakened strength, is damaged or detaches from the terminal part of the terminal.

[0010] In particular, unlike the connection part of the bus bar connected to the terminal block (the power terminal part of the terminal that protrudes to the outermost edge of the holder and is connected to the terminal block), the holder part is not connected separately and is supported in a cantilever structure through the terminal, so when vibration occurs, the displacement becomes large (since the displacement of the holder becomes larger than the displacement of the power terminal part), so there is a problem of being vulnerable to vibration.

[0011] Accordingly, various studies have recently been conducted to increase the durability of coils and improve stability and reliability, but they are still insufficient, and further development is required. The problem to be solved

[0013] The embodiment according to the present invention aims to provide a motor capable of improving durability and enhancing stability and reliability.

[0014] In particular, the embodiments of the present invention aim to minimize displacement of the holder when vibration and shock occur, and to minimize damage to the coil and reduction in durability.

[0015] In addition, the embodiments of the present invention aim to minimize fastening defects of the support unit and to improve workability and assembly.

[0016] In addition, embodiments of the present invention are intended to enable the reduction of vibration and noise.

[0017] In addition, the embodiments of the present invention aim to simplify the structure and reduce costs.

[0018] The problems intended to be solved in the embodiments are not limited thereto, and may also include objectives or effects that can be identified from the means of solving the problems or the embodiments described below. means of solving the problem

[0020] According to a preferred embodiment of the present invention for achieving the objectives of the present invention described above, the motor comprises: a stator including a stator core and a coil wound on the stator core; a busbar unit including a terminal electrically connected to the coil and a holder supporting the terminal; and a support unit supporting the holder with respect to the stator core.

[0021] This is intended to improve the motor's durability and enhance stability and reliability.

[0022] In other words, unlike the connection part of the bus bar that is connected to the terminal block (the power terminal part of the terminal that protrudes to the outermost edge of the holder and is connected to the terminal block), the holder part is not connected separately and is supported in a cantilever structure through the terminal. As a result, when vibration occurs, the displacement increases (since the displacement of the holder becomes greater than the displacement of the power terminal part), so there is a problem of vulnerability to vibration, and the fusing part of the coil with weakened strength is damaged or detached from the terminal part of the terminal.

[0023] However, by ensuring that the holder is supported on the stator core via a support unit, the increase in displacement of the holder can be minimized, damage and deformation of the coil caused by vibration or external impact on the motor can be minimized, and the advantageous effect of minimizing the detachment of the coil from the terminal can be obtained.

[0025] The support unit can be formed in various structures capable of supporting the holder against the stator core.

[0026] For example, the support unit may include a base member connected to a holder, and a support member provided on the base member and supporting the base member with respect to a stator core.

[0027] Preferably, the support unit may include a first unit that supports a holder with respect to a stator core, and a second unit that is spaced apart from the first unit and supports a holder with respect to a stator core.

[0029] According to a preferred embodiment of the present invention, the support member is configured to be selectively movable relative to the base member in a first direction approaching the stator core and a second direction spaced apart from the stator core.

[0030] This is intended to minimize fastening defects of the support unit and to improve workability and assembly.

[0031] That is, when fastening pressure is applied or deformation occurs due to fastening a fastening member to the stator core, a position (height) deviation of each unit (e.g., the first unit and the second unit) relative to the stator core occurs, so there is a problem in that it is difficult to fasten each unit (the first unit and the second unit) to the correct position (the position where the first unit and the second unit are in close contact with the stator core).

[0032] However, in the embodiment of the present invention, by selectively moving the support member relative to the base member in a first direction toward the stator core and a second direction toward the stator core, it is possible to vary the position (height) of the support member relative to the stator core even if an assembly tolerance (gap between the first unit or the second unit and the stator core) occurs due to fastening pressure and deformation, thereby making it possible to fasten the support member at a precise position where it can contact the stator core.

[0034] According to a preferred embodiment of the present invention, the support member may include a first support member that is linearly movable with respect to a base member, and a second support member that is connected to the first support member so as to be in contact with a stator core.

[0035] Preferably, a through hole through which a fastening member can pass may be formed in the second support member, and the fastening member may be fastened to the stator core so as to pass through the through hole.

[0037] According to a preferred embodiment of the present invention, the motor may include a unidirectional restraint member that allows movement of the support member along a first direction and restrains movement of the support member along a second direction.

[0038] In this way, by restricting the movement of the support member along the second direction after the support member has moved along the first direction, an advantageous effect can be obtained of stably maintaining the support state of the holder by the support member.

[0040] The unidirectional restraint can be provided in various structures that allow movement along the first direction of the supporting member and restrain movement along the second direction.

[0041] For example, the unidirectional restraint member may include a protrusion inclined surface and a protrusion restraint surface connected to the end of the protrusion inclined surface to form a wedge shape in cooperation with the protrusion inclined surface, and a restraint projection formed on the first support member; and a guide groove formed on the base member to accommodate the restraint projection, including a guide inclined surface corresponding to the protrusion inclined surface and a guide restraint surface corresponding to the protrusion restraint surface.

[0043] According to a preferred embodiment of the present invention, the motor may include a cut slot formed in a first support member and defining a movable space that allows the first support member to move relative to a second support member with respect to one end.

[0044] Thus, according to a preferred embodiment of the present invention, by forming an incision slot in the first support member, when an external force (e.g., an external force pulling in a first direction) is applied to the first support member, the first support member can elastically move relative to the second support member with respect to one end (bottom), thereby obtaining an advantageous effect of implementing the movement of the restraining projection relative to the guide groove (movement of the support member relative to the base member) more naturally and smoothly.

[0045] Furthermore, according to a preferred embodiment of the present invention, by forming an incision slot in the first support member, it is possible to selectively move the support member in a second direction relative to the base member. Accordingly, when the support member moves excessively in the first direction relative to the base member, the second support member can be moved in the second direction while pressing the side of the first support member, thereby allowing the position of the support member relative to the stator core to be adjusted more accurately, and an advantageous effect can be obtained in which the position correction work of the support member is simplified and convenience is improved.

[0047] According to a preferred embodiment of the present invention, the motor may include an elastic projection extending to a support member so as to be elastically contactable to the side of the stator core.

[0048] In this way, by providing elastic protrusions on the support member and ensuring that the elastic protrusions elastically contact the side of the stator core when the support member is positioned on the upper part of the stator core, an advantageous effect can be obtained in stably maintaining the position of the support member relative to the stator core (pre-assembly state) before the fastening member is fastened to the stator core by passing through the through hole. Therefore, since a separate jig or process for supporting the position of the support member during the fastening of the fastening member can be eliminated, an advantageous effect of improving workability and assembly can be obtained. Effects of the invention

[0050] As described above, according to an embodiment of the present invention, durability can be improved, and advantageous effects such as improved stability and reliability can be obtained.

[0051] In particular, according to an embodiment of the present invention, an advantageous effect can be obtained in which the displacement of the holder is minimized when vibration and shock occur, and damage to the coil and reduction in durability are minimized.

[0052] In addition, according to an embodiment of the present invention, advantageous effects can be obtained by minimizing fastening defects of the support unit and improving workability and assembly.

[0053] Above all, according to an embodiment of the present invention, even if assembly tolerances occur due to fastening pressure and deformation, it is possible to vary the position (height) of the support member relative to the stator core, thereby allowing the support member to be fastened in the correct position and providing the advantageous effect of simplifying the fastening process of the support member and improving workability and assembly.

[0054] In addition, according to an embodiment of the present invention, an advantageous effect of reducing vibration and noise can be obtained.

[0055] In addition, according to an embodiment of the present invention, advantageous effects such as simplifying the structure and reducing costs can be obtained. Brief explanation of the drawing

[0057] FIG. 1 is a drawing for explaining a motor according to an embodiment of the present invention. FIG. 2 is a drawing for explaining a busbar unit as a motor according to an embodiment of the present invention. FIGS. 3 and 4 are drawings for explaining a support unit as a motor according to an embodiment of the present invention. FIG. 5 is a drawing for explaining a support member as a motor according to an embodiment of the present invention. FIG. 6 is a drawing for explaining a unidirectional restraint part as a motor according to an embodiment of the present invention. FIG. 7 is a drawing illustrating the lowered state of a support member as a motor according to an embodiment of the present invention. FIG. 8 is a drawing for explaining a cut slot in a motor according to an embodiment of the present invention. Specific details for implementing the invention

[0058] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0059] 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.

[0060] 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.

[0061] Furthermore, the terms used in the embodiments of the present invention are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0062] 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 formed from A, B, and C.

[0063] 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.

[0064] 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.

[0065] And, where it is stated that a component is 'connected', 'combined', or 'connected' to another component, this may include not only cases where the component is directly connected, combined, or connected to the other component, but also cases where it is 'connected', 'combined', or 'connected' due to another component located between the component and the other component.

[0066] 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.

[0068] Referring to FIGS. 1 to 8, a motor (10) according to an embodiment of the present invention comprises: a stator (100) including a stator core (110) and a coil (120) wound on the stator core (110); a busbar unit (200) including a terminal (210) electrically connected to the coil (120) and a holder (220) supporting the terminal (210); and a support unit (300) supporting the holder (220) with respect to the stator core (110).

[0069] For reference, the motor (10) according to the embodiment of the present invention may be mounted on various objects depending on the required conditions and design specifications, and the present invention is not limited or restricted by the type and structure of the objects.

[0070] For example, the motor (10) according to an embodiment of the present invention can be used as a drive motor (10) for a hybrid vehicle and / or electric vehicle that obtains driving force from electric energy in an eco-friendly vehicle.

[0071] For example, the drive motor (10) may be an inner rotor type synchronous motor (10) and may include a stator (100) seated in a housing and a rotor (not shown) rotatably installed with a certain air gap inside the stator (100), and a busbar unit (200) may be connected to the stator (100).

[0073] The stator (100) may include a stator core (110) and a coil (120) wound on the stator core (110).

[0074] For example, an annular yoke (not shown) may be formed in the stator core (110), and a tooth (not shown) on which a coil (120) is wound in the yoke towards the center may be provided.

[0075] In addition, the stator core (110) can be formed by stacking a plurality of plates in the form of thin steel plates.

[0076] According to another embodiment of the present invention, it is also possible to form a stator core using a plurality of segmented cores arranged to form a ring shape in a cooperative manner.

[0078] The rotor is configured to rotate through electrical interaction with the stator (100).

[0079] For example, the rotor may include a rotor core (not shown) and a magnet (not shown). The rotor core may be provided in a structure formed by stacking multiple circular plates in the form of thin steel plates, or in a structure in the form of a single tube.

[0080] A hole (not shown) for coupling a shaft may be formed in the center of the rotor. A projection (not shown) for guiding a magnet may protrude from the outer surface of the rotor core. Magnets may be attached to the outer surface of the rotor core at regular intervals along the circumferential direction of the rotor core.

[0081] Additionally, the rotor may include a can member (not shown) positioned to surround the magnet to prevent the magnet from detaching.

[0083] The busbar unit (200) is provided to electrically connect an external power source and a stator (100) (coil of the stator).

[0084] For example, the busbar unit (200) may include a terminal (210) electrically connected to a coil (120) and a holder (220) supporting the terminal (210), and may be positioned on the upper part of the stator (100).

[0086] The terminal (210) is provided to electrically connect the coil (120) of the stator (100) to an external power source.

[0087] According to a preferred embodiment of the present invention, the terminal (210) may be at least one of a phase terminal (U-phase terminal, V-phase terminal, W-phase terminal) connected to a U-phase, V-phase, and W-phase power source, and a neutral terminal electrically connected to the phase terminal. As an example, the busbar unit (200) may include a total of four terminals (210) (U-phase terminal, V-phase terminal, W-phase terminal, neutral terminal).

[0089] For example, the terminal (210) may include a body (not shown) that is accommodated inside a holder (220), and a terminal portion (not shown) that protrudes from the inner circumference of the body and to which a coil (120) is connected.

[0090] The structure and shape of the body may be varied according to the required conditions and design specifications. For example, the body may have a single-layer structure and be formed as an arc-shaped band member having a predetermined curvature.

[0091] According to another embodiment of the present invention, it is also possible to form the body into a double-layer structure (multi-layer structure) having a folded portion.

[0093] The terminal portion is provided on the inner surface of the body, and the end of the coil (120) of the stator (100) can be connected to the terminal portion.

[0094] The terminal portion can be formed in various structures such that the end of the coil (120) can be electrically connected (e.g., fusing), and the present invention is not limited or restricted by the structure and shape of the terminal portion.

[0096] Additionally, the terminal (210) may include a power terminal portion (212) protruding from the outer surface of the holder (220).

[0097] The power terminal portion (212) extends from the outer surface of the body and is positioned to protrude from the outer circumference of the holder (220). External power cables corresponding to each phase (U phase, V phase, W phase) can be electrically connected to the power terminal portion (212).

[0098] According to a preferred embodiment of the present invention, the motor (10) may include a terminal block (20) that electrically connects the terminal (210) to an external power source, and the power terminal portion (212) of the terminal (210) may be fastened (fixed) to the terminal block (20) by a conventional bolt.

[0100] The holder (220) supports the arrangement of the terminals (210) and is provided for electrical insulation between the terminals (210).

[0101] The holder (220) may be provided in various structures capable of supporting the terminal (210), and the present invention is not limited or restricted by the structure of the holder (220).

[0102] For example, the holder (220) may include a holder body (not shown) that supports the body, and a terminal holder part (not shown) provided on the inner circumference of the holder body and on which a terminal part is disposed (e.g., seated).

[0104] The material and shape of the holder body may be varied according to required conditions and design specifications, and the present invention is not limited or restricted by the material and shape of the holder body.

[0105] For example, the holder body may be formed to have a hollow arc shape that wraps around the circumference of the body, and may be provided as a molded product by injection molding (e.g., an insulating material).

[0107] The terminal holder portion can be formed in various structures capable of supporting the terminal portion, and the present invention is not limited or restricted by the structure of the terminal holder portion. For example, the terminal holder portion may be formed in a cantilever structure in which one end (outer end) is fixed to the inner circumference of the holder body and the other end (inner end) is positioned as a free end.

[0108] Preferably, the terminal holder portion can be injection molded integrally with the holder body. According to another embodiment of the present invention, it is also possible to manufacture the terminal holder portion separately and then combine it with the holder body.

[0110] The support unit (300) is provided to support the holder (220) with respect to the stator core (110).

[0111] This is to minimize displacement of the holder (220) when vibration and shock occur, and to minimize damage and reduced durability of the coil (120).

[0112] That is, the connection part of the bus bar connected to the terminal block (20) (the power terminal part of the terminal that protrudes from the outermost edge of the holder and is connected to the terminal block) is fixed by a connection member (FB) (e.g., a bolt), so the increase in displacement due to vibration can be suppressed. On the other hand, the holder (220) part is not connected separately and is supported in a cantilever structure via the terminal (210), so when vibration occurs, the displacement increases (the displacement of the holder becomes greater than the displacement of the power terminal part), so there is a problem of being vulnerable to vibration.

[0113] However, in an embodiment of the present invention, by ensuring that the holder (220) is supported on the stator core (110) via the support unit (300), the increase in displacement of the holder (220) can be minimized, damage and deformation of the coil (120) caused by vibration or external impact on the motor (10) can be minimized, and the advantageous effect of minimizing the detachment of the coil (120) from the terminal can be obtained.

[0115] The support unit (300) can be formed in various structures capable of supporting the holder (220) with respect to the stator core (110), and the present invention is not limited or restricted by the structure of the support unit (300).

[0116] For example, referring to FIGS. 2 to 4, the support unit (300) may include a base member (310) connected to a holder (220), and a support member (320) provided on the base member (310) and supporting the base member (310) with respect to the stator core (110).

[0117] Here, the statement that the support member (320) is provided on the base member (310) may be defined as including all cases where the support member (320) is integrally extended to the base member (310) or coupled or connected to the base member (310).

[0118] Preferably, the support unit (300) may include a first unit (300') that supports the holder (220) with respect to the stator core (110), and a second unit (300") that is spaced apart from the first unit (300') and supports the holder (220) with respect to the stator core (110).

[0119] The first unit (300') and the second unit (300") may be provided with the same structure. For example, the first unit (300') may include a base member (310) and a support member (320), and the second unit (300") may include a base member (310) and a support member (320). According to another embodiment of the present invention, it is also possible to form the first unit and the second unit with different structures.

[0120] In this way, by supporting the holder (220) at two spaced points using the first unit (300') and the second unit (300"), an advantageous effect of more effectively suppressing the displacement of the holder (220) relative to the stator core (110) can be obtained. According to another embodiment of the present invention, it is possible for the support unit to include three or more units. Alternatively, it is possible to configure the support unit as a single unit.

[0122] The structure and shape of the base member (310) and the support member (320) may be varied according to the required conditions and design specifications, and the present invention is not limited or restricted by the structure and shape of the base member (310) and the support member (320).

[0123] Preferably, the support member (320) is provided separately from the base member (310) and can be coupled to the base member (310).

[0125] More preferably, the support member (320) is configured to be selectively movable relative to the base member (310) in a first direction (D1) (downward direction in FIG. 1) approaching the stator core (110) and a second direction (D2) (upward direction in FIG. 1) away from the stator core (110).

[0126] This is intended to minimize fastening defects of the support unit (300) and to improve workability and assembly.

[0127] That is, when fastening pressure is applied or deformation occurs due to fastening the fastening member (FB) to the stator core (110), a position (height) deviation of each unit (first unit and second unit) relative to the stator core (110) occurs, so there is a problem that it is difficult to fasten each unit (first unit and second unit) to the correct position (a position where the first unit and second unit are placed in close contact with the stator core).

[0128] For example, when the first unit (300') is fastened to the stator core (110) by a fastening member (FB), and fastening pressure is applied to the stator core (110), the stator core (110) is compressed, causing a gap to widen between the second unit (300") and the stator core (110), and as a result, it is difficult for the second unit (300") to come into contact with the stator core (110).

[0129] However, in an embodiment of the present invention, by selectively moving the support member (320) relative to the base member (310) in a first direction (D1) toward the stator core (110) and a second direction (D2) toward the stator core (110), it is possible to vary the position (height) of the support member (320) relative to the stator core (110) even if an assembly tolerance (gap between the first unit or the second unit and the stator core) occurs due to fastening pressure and deformation, so that the support member (320) can be fastened at a position where it can contact the stator core (110).

[0131] According to a preferred embodiment of the present invention, the support member (320) may be configured to move linearly along a first direction (D1) and a second direction (D2).

[0132] For example, the support member (320) may be provided to have an approximately “L” cross-sectional shape, including a first support member (322) that is configured to move linearly along the up and down direction (based on FIG. 1) with respect to the base member (310), and a second support member (324) that is connected (bent) to the lower end of the first support member (322) so as to be in contact with the stator core (110).

[0133] For example, a through hole (324a) through which a fastening member (FB) can pass may be formed in the second support member (324), and the fastening member (FB) may be fastened to the stator core (110) so as to pass through the through hole (324a).

[0135] According to a preferred embodiment of the present invention, the motor (10) may include a one-way restraint member (330) that allows movement of the support member (320) along a first direction (D1) (direction in which the support member approaches the stator core) and restrains movement of the support member (320) along a second direction (D2) (direction in which the support member moves away from the stator core).

[0136] In this way, after the support member (320) moves along the first direction (D1), the movement of the support member (320) along the second direction (D2) is restricted, thereby obtaining the advantageous effect of stably maintaining the support state of the holder (220) by the support member (320).

[0138] The unidirectional restraint member (330) may be provided in various structures that allow movement along the first direction (D1) of the support member (320) and restrain movement along the second direction (D2), and the present invention is not limited or restricted by the structure of the unidirectional restraint member (330).

[0139] For example, the unidirectional restraint member (330) may include a protruding inclined surface (332a) and a protruding restraint surface (332b) connected to the end of the protruding inclined surface (332a) to form a wedge shape in cooperation with the protruding inclined surface (332a), and a restraint projection (332) formed on the first support member (322); and a guide groove (334) formed on the base member (310) to accommodate the restraint projection (332), including a guide inclined surface (334a) corresponding to the protruding inclined surface (332a) and a guide restraint surface (334b) corresponding to the protruding restraint surface (332b).

[0140] The restraining projection (332) may be formed on the side of the first support member (322) along the vertical direction (based on FIG. 6) of the first support member (322) so as to have a wedge shape (triangular cross-sectional shape) that gradually narrows in width from one end to the other.

[0141] One side (hypotenuse) of the restraining projection (332) forms a projection inclined surface (332a), and the other side of the restraining projection (332) forms a projection restraining surface (332b).

[0142] The size of the restraining projection (332) can be varied according to the required conditions and design specifications, and the present invention is not limited or restricted by the size of the restraining projection (332).

[0143] For reference, in the embodiment of the present invention, an example is described in which only one restraining projection (332) is formed on the side of the first support member (322), but according to another embodiment of the present invention, it is also possible to form a plurality of restraining projections on the side of the first support member.

[0145] The guide groove (334) can be formed inside the base member (310) to have a triangular cross-sectional shape corresponding to the restraining projection (332).

[0146] Hereinafter, an example will be described in which a plurality of guide grooves (334) are continuously formed inside the base member (310) in a roughly sawtooth shape. According to another embodiment of the present invention, it is also possible to form a plurality of guide grooves spaced apart, and the present invention is not limited or restricted by the number of guide grooves and the spacing between them.

[0147] More specifically, the guide groove (334) includes a guide slope surface (334a) corresponding to the protrusion slope surface (332a) and a guide restraint surface (334b) connected to the end of the guide slope surface (334a) to correspond to the protrusion restraint surface (332b).

[0148] With the restraining projection (332) received in the guide groove (334), the projection inclined surface (332a) may be positioned to face the guide inclined surface (334a), and the projection restraining surface (332b) may be positioned to face the guide restraining surface (334b).

[0149] With this structure, when the support member (320) is moved in the first direction (D1) relative to the base member (310), as shown in FIG. 7, the support member (320) can gradually move downward (first direction) in such a manner that the protruding restraining surface (332b) moves along the guide restraining surface (334b) of a specific guide groove (334) and is then received in another guide groove (334) positioned below.

[0151] According to a preferred embodiment of the present invention, the motor (10) may include a cut slot (336) formed in the first support member (322) and defining a movable space (336a) that the first support member (322) can move relative to the second support member (324) with respect to one end.

[0152] The cut slot (336) can be formed in various structures that can impart elastic fluidity to the first support member (322) (a characteristic that allows elastic movement along the left and right directions relative to the second support member based on FIG. 8), and the present invention is not limited or restricted by the structure and shape of the cut slot (336).

[0153] For example, the cut slot (336) may be formed in a roughly straight line shape in the roughly central part of the first support member (322), and the first support member (322) including the cut slot (336) may be formed in a roughly "U" shape overall.

[0154] Preferably, restraint projections (332) may be formed on both sides of the first support member (322) symmetrically around the cut slot (336).

[0155] In the embodiments of the present invention described above, the cutting slot (336) is described as being formed in a straight line shape; however, according to other embodiments of the present invention, it is also possible to form the cutting slot in a curved shape such as an 'S' shape or a 'C' shape. Alternatively, it is also possible to form a plurality of cutting slots spaced apart at a predetermined interval on the first support member.

[0157] Thus, according to a preferred embodiment of the present invention, by forming a cut slot (336) in the first support member (322), when an external force (e.g., an external force pulling in the first direction) is applied to the first support member (322), the first support member (322) can elastically move relative to the second support member (324) with respect to one end (bottom), thereby obtaining an advantageous effect of implementing the movement of the restraining projection (332) relative to the guide groove (334) (movement of the support member relative to the base member) more naturally and smoothly.

[0158] Furthermore, according to a preferred embodiment of the present invention, by forming a cut slot (336) in the first support member (322), it is possible to selectively move the support member (320) to the second direction (D2) relative to the base member (310).

[0159] That is, as shown in FIG. 8, when both sides of the first support member (322) facing the cut slot (336) are pressed, the first support member (322) moves into the moving space (336a) by means of the pressure (P) applied to the sides of the first support member (322), thereby allowing the protrusion restraint surface (332b) to be withdrawn from the guide restraint surface (334b) and allowing the first support member (322) to move in the upward direction (second direction) relative to the base member (310).

[0160] Accordingly, when the support member (320) moves excessively in the first direction (D1) relative to the base member (310), the second support member (324) (320) can be moved in the second direction (D2) while pressing the side of the first support member (322), so the position of the support member (320) relative to the stator core (110) can be adjusted more accurately, and the position correction work of the support member (320) can be simplified and the convenience can be improved, resulting in an advantageous effect.

[0162] According to a preferred embodiment of the present invention, the motor (10) may include an elastic projection (326) that extends to a support member (320) so as to be elastically contactable to the side of the stator core (110).

[0163] The elastic protrusion (326) can be formed in various structures that can elastically contact the side of the stator core (110).

[0164] For example, the elastic protrusion (326) may be extended to the side of the second support (324) to have an approximate "S" shape.

[0165] In this way, by providing an elastic protrusion (326) on the support member (320) and positioning the support member (320) on the upper part of the stator core (110), the elastic protrusion (326) is made to elastically contact the side of the stator core (110), thereby obtaining an advantageous effect of stably maintaining the positioning state (pre-assembly state) of the support member (320) relative to the stator core (110) before the fastening member (FB) is fastened to the stator core (110) by passing through the through hole (324a). Accordingly, since a separate jig or process for supporting the positioning state of the support member (320) when fastening the fastening member (FB) can be eliminated, an advantageous effect of improving workability and assembly can be obtained.

[0167] Although the invention has been described above with reference to embodiments, this is merely illustrative and does not limit the invention. Those skilled in the art will understand that various modifications and applications not exemplified above are possible within the scope of the essential characteristics of the embodiments. For example, each component specifically shown in the embodiments may be modified and implemented. Furthermore, differences related to such modifications and applications should be interpreted as being included within the scope of the invention as defined in the appended claims. Explanation of the symbols

[0169] 10 : Motor 20 : Terminal block 100 : Stator 110: Stator core 120 : coil 200 : Busbar unit 210 : Terminal 212 : Power terminal 220 : Holder 300 : Support unit 300' : 1st Unit 300" : 2nd unit 310 : Base member 320 : Support member 322 : 1st Support Section 324 : 2nd Support Section 324a : Through hole 326 : Elastic protrusion 330 : Unidirectional restraint 332 : Restraint projection 332a : Slanted surface 332b : Projection restraint surface 334 : Guide Home 334a : Guide slope 334b : Guide constraint surface 336 : Incision Slot 336a : Movement space

Claims

Claim 1 A motor comprising: a stator including a stator core and a coil wound on the stator core; a busbar unit including a terminal electrically connected to the coil and a holder supporting the terminal; and a support unit supporting the holder with respect to the stator core; wherein the support unit includes a base member connected to the holder; and a support member provided on the base member and supporting the base member with respect to the stator core; and wherein the support member is selectively movable with respect to the base member in a first direction approaching the stator core and a second direction spaced apart from the stator core. Claim 2 delete Claim 3 delete Claim 4 In claim 1, the motor comprises: a first support member configured to be linearly movable with respect to the base member; and a second support member connected to the first support member to be contactable to the stator core. Claim 5 In paragraph 4, a through hole is formed in the second support member through which a fastening member can pass, and the motor is fastened to the stator core so as to pass through the through hole. Claim 6 A motor according to claim 4, comprising a unidirectional restraint member that allows movement of the support member along the first direction and restrains movement of the support member along the second direction. Claim 7 In claim 6, the motor comprises: a unidirectional restraint member including a protruding inclined surface and a protruding restraint surface connected to the end of the protruding inclined surface to form a wedge shape in a cooperative manner with the protruding inclined surface, and a restraint projection formed on the first support member; and a guide groove formed on the base member to accommodate the restraint projection, including a guide inclined surface corresponding to the protruding inclined surface and a guide restraint surface corresponding to the protruding restraint surface. Claim 8 A motor according to claim 7, comprising a cut slot formed in the first support member, which defines a movable space that the first support member is movable relative to the second support member with respect to one end. Claim 9 In claim 8, the restraining projection is a motor provided on both sides of the first support member symmetrically around the cut slot. Claim 10 A motor according to claim 1, comprising an elastic projection extending to the support member so as to be elastically contactable to the side of the stator core. Claim 11 In claim 1, the terminal block electrically connecting the terminal and an external power source is included, and the terminal is a motor connected to the terminal block. Claim 12 A motor according to claim 1, wherein the support unit comprises: a first unit supporting the holder with respect to the stator core; and a second unit spaced apart from the first unit and supporting the holder with respect to the stator core.

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