Motor

Abstract

The present invention relates to a motor, and by including a stator comprising a plurality of segmented cores arranged to form a ring shape in a cooperative manner, and a support ring arranged to surround the outer surface of the segmented cores and supporting the upper and lower surfaces of the segmented cores, an 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 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 comprises a stator formed by laminating electrical steel sheets and stator coils wound in the slots of the stator.

[0006] Drive motors can be classified into distributed-wound drive motors and concentrated-wound drive motors depending on the winding method of the stator coils.

[0007] Among these, unlike the stator of a distributed winding drive motor, the stator of a concentrated winding drive motor uses a split-core type stator. Here, the split-core type refers to a method in which the stator is divided into multiple split cores, a stator coil is wound on each split core, and then each of the divided split cores is fixed by press-fitting (hot press-fitting) into a support ring.

[0008] Meanwhile, since deformation of the split core degrades the motor's electrical and mechanical performance, it is necessary to minimize deformation and damage to the split core.

[0009] However, conventionally, when a support ring is pressed onto the outer surface of a split core, if excessive radial force (a force tightening the split core in the radial direction) is applied to the split core, deformation (e.g., swelling, twisting, lifting) and damage occur to the split core, and there is a problem in that the electrical performance of the split core deteriorates.

[0010] In addition, in order to secure the electrical and mechanical performance of the motor, the position and orientation of the split core must be maintained consistently and stably. However, conventionally, only the outer surface of the split core can be supported by a support ring, and it is difficult to support the upper and lower surfaces of the split core along the axial direction of the stator, so there is a problem in that it is difficult to maintain the position (height) of the upper and lower surfaces of the split core uniformly.

[0011] Accordingly, various studies have recently been conducted to minimize deformation and damage to the core and to stably maintain its position and posture, but these efforts 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 stability and reliability.

[0014] In particular, the embodiment according to the present invention aims to minimize deformation and damage to the core and to stably maintain the position and orientation (angle) of the core.

[0015] In addition, the embodiment according to the present invention aims to suppress misassembly of the core and minimize the height (depth) tolerance of the core.

[0016] In addition, the embodiment according to the present invention aims to simplify the assembly process and improve assemblability.

[0017] 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 forms of implementation described below. means of solving the problem

[0019] According to a preferred embodiment of the present invention for achieving the aforementioned objectives of the present invention, the motor comprises a stator including a plurality of segmented cores arranged to form a ring shape in a cooperative manner, and a support ring arranged to surround the outer surface of the segmented cores and to support the upper and lower surfaces of the segmented cores.

[0020] This is intended to improve the motor's cooling performance and enhance stability and reliability.

[0021] In other words, conventionally, when a support ring is pressed onto the outer surface of a split core, excessive radial force (a force tightening the split core in the radial direction) is applied to the split core, resulting in problems such as deformation (e.g., bulging, twisting, lifting) and damage to the split core.

[0022] In addition, in order to reliably secure the electrical and mechanical performance of the motor, the position and orientation of the split core must be maintained consistently and stably. However, conventionally, only the outer surface of the split core can be supported by a support ring, and it is difficult to support the upper and lower surfaces of the split core along the axial direction of the stator, so there is a problem in that it is difficult to maintain the position (height) of the upper and lower surfaces of the split core uniformly.

[0023] However, the embodiment of the present invention can obtain the advantageous effect of stably maintaining the position and orientation (angle) of the split core by having the support ring surround the outer surface of the split core and support the upper and lower surfaces of the split core.

[0024] Above all, the embodiment of the present invention can obtain the advantageous effect of maintaining the position (height) of the upper and lower surfaces of the split core uniformly by the support ring supporting the upper and lower surfaces of the split core.

[0026] The support ring can be provided in various structures capable of supporting the upper and lower surfaces of the divided cores while wrapping around the outer surface of the multiple divided cores.

[0027] For example, the support ring may include an upper support ring that is arranged to surround a portion of the outer surface of the split core and supports the upper surface of the split core, and a lower support ring that is arranged to surround another portion of the outer surface of the split core and supports the lower surface of the split core.

[0028] Preferably, the motor may include a fastening member that fastens an upper support ring and a lower support ring.

[0029] In this way, by arranging an upper support ring and a lower support ring on the upper and lower parts of the split core and connecting the upper support ring and the lower support ring via a fastening member, unlike the conventional method of press-fitting support rings into the split core, it is possible to suppress the application of excessive radial force (force tightening the split core radially) to the split core, thereby obtaining the advantageous effect of minimizing deformation and damage to the split core.

[0030] In addition, since the embodiment of the present invention can eliminate the process of hot-pressing the support ring, it is possible to obtain the advantageous effect of simplifying the manufacturing process and shortening the manufacturing time.

[0032] The upper support ring and the lower support ring can be formed in various structures depending on the required conditions and design specifications.

[0033] Preferably, the upper support ring and the lower support ring are formed with the same structure (same shape). Therefore, since a support ring including the upper support ring and the lower support ring can be manufactured using a single mold in common, the manufacturing process can be simplified and the production cost can be reduced, which is an advantageous effect.

[0035] According to a preferred embodiment of the present invention, the upper support ring may include a first upper support portion supporting the upper surface of a split core, a second upper support portion extending from the first upper support portion and arranged to surround the outer surface of the split core, and an upper flange portion protruding from the outer surface of the second upper support portion.

[0036] According to a preferred embodiment of the present invention, the lower support ring may include a first lower support portion supporting the bottom surface of a split core, a second lower support portion extending from the first lower support portion and arranged to surround the outer surface of the split core, and a lower flange portion protruding from the outer surface of the second lower support portion to face an upper flange portion.

[0038] The fastening member can fasten the upper support ring and the lower support ring in various ways.

[0039] For example, the fastening member may be configured to fasten the upper flange portion and the lower flange portion.

[0040] According to a preferred embodiment of the present invention, an upper fastening hole may be formed in the upper flange portion and a lower fastening hole may be formed in the lower flange portion, and a fastening member may be fastened to the upper fastening hole and the lower fastening hole.

[0042] According to a preferred embodiment of the present invention, a housing provided to surround the circumference of a support ring may have a housing fastening hole formed therein for fastening a fastening member.

[0043] In this way, by forming a housing fastening hole in the housing and having the upper support ring and lower support ring positioned inside the housing, and by having the fastening member fasten the upper support ring, lower support ring, and housing together, an advantageous effect of simplifying the assembly and fastening process of the support ring can be obtained.

[0045] According to a preferred embodiment of the present invention, the motor may include a guide groove formed on the outer surface of a split core along the axial direction of the stator, a first guide projection formed on the inner surface of a second upper support member and received in the guide groove, and a second guide projection formed on the inner surface of a second lower support member and received in the guide groove.

[0046] In this way, by forming a guide groove in the split core and providing a first guide projection and a second guide projection on the inner circumference of the upper support ring and the lower support ring, the position and orientation of the upper support ring and the lower support ring relative to the split core can be stably maintained, and the advantageous effect of suppressing rotation of the upper support ring and the lower support ring relative to the split core can be obtained.

[0048] According to a preferred embodiment of the present invention, a gap may be provided between the upper support ring and the lower support ring and the outer surface of the core.

[0049] In this way, by forming a gap between the upper support ring and the lower support ring and the outer surface of the core, the stress acting on the core by the support ring can be minimized even if the split core expands (radially) due to heat (e.g., heat to cure the varnish applied to the core), and natural shrinkage of the split core can be ensured even when the split core cools.

[0051] According to a preferred embodiment of the present invention, the motor may include a fixing hole formed on the upper surface and the lower surface of a split core, respectively; a first fixing projection formed on the inner surface of a first upper support member and received in the fixing hole formed on the upper surface of the split core; and a second fixing projection formed on the inner surface of a first lower support member and received in the fixing hole formed on the lower surface of the split core.

[0052] In this way, by forming a fixing hole in the split core and forming a first fixing projection and a second fixing projection on the first upper support part and the first lower support part, an advantageous effect can be obtained to maintain the arrangement state of the upper support ring and the lower support ring with respect to the split core more stably.

[0053] In addition, by forming a fixing hole in the split core and forming a first fixing projection and a second fixing projection on the first upper support part and the first lower support part, an advantageous effect of minimizing misassembly of the upper support ring and the lower support ring can be obtained. Effects of the invention

[0055] As described above, according to an embodiment of the present invention, an advantageous effect of improving stability and reliability can be obtained.

[0056] In particular, according to an embodiment of the present invention, advantageous effects can be obtained in minimizing deformation and damage to the core and stably maintaining the position and orientation (angle) of the core.

[0057] In addition, according to an embodiment of the present invention, an advantageous effect can be obtained of suppressing misassembly of the core and minimizing the height (depth) tolerance of the core.

[0058] In addition, according to an embodiment of the present invention, advantageous effects can be obtained by simplifying the assembly process and improving assemblability. Brief explanation of the drawing

[0060] 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 support ring as a motor according to an embodiment of the present invention. FIGS. 3 and 4 are drawings for explaining an upper support ring as a motor according to an embodiment of the present invention. FIGS. 5 and 6 are drawings for explaining a lower support ring as a motor according to an embodiment of the present invention. FIG. 7 is a drawing for explaining a guide groove as a motor according to an embodiment of the present invention. FIG. 8 is a drawing for explaining a fixing hole in a motor according to an embodiment of the present invention. FIG. 9 is a drawing for explaining a modified example of a fixed hole in a motor according to an embodiment of the present invention. FIG. 10 is a drawing for explaining the housing of a motor according to an embodiment of the present invention. Specific details for implementing the invention

[0061] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0071] Referring to FIGS. 1 to 10, a motor (10) according to an embodiment of the present invention includes a stator (200) comprising a plurality of segmented cores (210) arranged to form a ring shape in a cooperative manner, and a support ring (300) arranged to surround the outer surface of the segmented cores (210) and supporting the upper and lower surfaces of the segmented cores (210).

[0072] For reference, the motor (10) according to an embodiment of the present invention may be used as a drive motor for a hybrid vehicle and / or an electric vehicle that obtains driving force from electric energy in an eco-friendly vehicle, and the present invention is not limited or restricted by the type of object to which the motor (10) is applied.

[0073] For example, the motor (10) according to an embodiment of the present invention may be used as an internal synchronous motor and may include a stator (200) coupling structure (not shown) provided inside a housing (100) to support and fix the stator (200), and a rotor (not shown) rotatably installed with a certain air gap inside the stator (200).

[0074] According to another embodiment of the present invention, a separate stator coupling structure may be excluded and the stator may be mounted inside the housing, and the present invention is not limited or restricted by the mounting structure of the stator.

[0076] Referring to FIG. 1, the housing (100) is formed to have a predetermined receiving space inside, and a stator (200) is received inside the housing (100). For example, the housing (100) can be installed inside a vehicle to seal the motor (10).

[0077] The housing (100) may be formed to have various shapes and structures capable of accommodating a stator (200) inside, and the present invention is not limited or restricted by the shape and structure of the housing (100).

[0079] The stator (200) includes a plurality of segmented cores (210) arranged to form a ring shape in a cooperative manner and is disposed inside the housing (100).

[0080] The number and structure of the divided cores (210) may vary depending on the required conditions and design specifications, and the present invention is not limited or restricted by the number and structure of the divided cores (210).

[0081] More specifically, the split core (210) can be formed by stacking a plurality of electrical steel sheets along the axial direction of the rotor.

[0082] A bobbin (230) (e.g., made of plastic material) is formed around the circumference of each segmented core (210), and a stator coil (220) is wound around the circumference of the bobbin (230).

[0084] Preferably, in order to more stably support the combined state between the split cores (210), a connecting projection (not shown) may be formed protruding along the axial direction on one side of the adjacent split cores (210) (e.g., formed to have a semicircular cross-sectional shape), and a connecting groove (not shown) in which the connecting projection is received may be formed recessed on the other side of the adjacent split cores (210).

[0086] The support ring (300) is provided to surround the outer surface of a plurality of divided cores (210) and to support the upper and lower surfaces of the divided cores (210).

[0087] In this way, the embodiment of the present invention can obtain the advantageous effect of stably maintaining the position and orientation (angle) of the divided core (210) by having the support ring (300) surround the outer surface of the divided core (210) and support the upper and lower surfaces of the divided core (210).

[0088] Above all, the embodiment of the present invention can obtain the advantageous effect of maintaining the position (height) of the upper and lower surfaces of the split core (210) uniformly by the support ring (300) supporting the upper and lower surfaces of the split core (210).

[0090] The support ring (300) can be provided in various structures capable of supporting the upper and lower surfaces of the divided cores (210) while surrounding the outer surface of the plurality of divided cores (210), and the present invention is not limited or restricted by the structure of the support ring (300).

[0091] For example, the support ring (300) may include an upper support ring (310) that is provided to surround a portion of the outer surface of the split core (210) and supports the upper surface of the split core (210), and a lower support ring (320) that is provided to surround another portion of the outer surface of the split core (210) and supports the lower surface of the split core (210).

[0092] Preferably, the motor (10) may include a fastening member (330) that fastens the upper support ring (310) and the lower support ring (320).

[0093] In this way, by placing an upper support ring (310) and a lower support ring (320) on the upper and lower parts of the split core (210) and connecting the upper support ring (310) and the lower support ring (320) via a fastening member (330), unlike the conventional method of pressing a support ring (300) into the split core (210), it is possible to suppress the application of excessive radial force (force tightening the split core (210) in the radial direction) to the split core (210), thereby obtaining an advantageous effect of minimizing deformation (e.g., swelling, twisting, lifting) and damage to the split core (210).

[0094] In addition, since the embodiment of the present invention can eliminate the process of hot-pressing the support ring (300), it is possible to obtain the advantageous effect of simplifying the manufacturing process and shortening the manufacturing time.

[0096] The upper support ring (310) and the lower support ring (320) may be formed in various structures according to required conditions and design specifications, and the present invention is not limited or restricted by the structure of the upper support ring (310) and the lower support ring (320).

[0097] Preferably, the upper support ring (310) and the lower support ring (320) are formed with the same structure (same shape). Therefore, since a support ring (300) including the upper support ring (310) and the lower support ring (320) can be manufactured using a single mold in common, the manufacturing process can be simplified and the manufacturing cost can be reduced, which is an advantageous effect.

[0099] According to a preferred embodiment of the present invention, the upper support ring (310) may include a first upper support portion (312) that supports the upper surface of the split core (210), a second upper support portion (314) that extends from the first upper support portion (312) and is arranged to surround the outer surface of the split core (210), and an upper flange portion (316) that protrudes from the outer surface of the second upper support portion (314).

[0100] The first upper support part (312) is formed to have a hollow ring shape and can be formed to cover the upper edge of the split core (210).

[0101] The second upper support member (314) is formed to have a hollow ring shape that surrounds the upper portion of the outer surface of the split core (210) and can be integrally connected to the end (right end based on FIG. 2) of the first upper support member (312). For example, the first upper support member (312) and the second upper support member (314) can be formed to form an approximately "L" shaped cross-section in a cooperative manner.

[0102] The structure of the upper flange portion (316) can be varied according to the required conditions and design specifications. For example, a plurality of upper flange portions (316) may be provided on the outer surface of the second upper support portion (314) spaced apart along the circumferential direction of the second upper support portion (314).

[0103] According to another embodiment of the present invention, it is also possible to form the upper flange portion in a continuous ring shape along the circumferential direction of the second upper support portion.

[0105] According to a preferred embodiment of the present invention, the lower support ring (320) may include a first lower support portion (322) that supports the bottom surface of the split core (210), a second lower support portion (324) that extends from the first lower support portion (322) and is arranged to surround the outer surface of the split core (210), and a lower flange portion (326) that protrudes from the outer surface of the second lower support portion (324) to face the upper flange portion (316).

[0106] The first lower support part (322) is formed to have a hollow ring shape and can be formed to cover the bottom edge of the split core (210).

[0107] The second lower support member (324) is formed to have a hollow ring shape that surrounds the lower portion of the outer surface of the split core (210) and can be integrally connected to the end (right end based on FIG. 2) of the first lower support member (322). For example, the first lower support member (322) and the second lower support member (324) can be formed to form an approximately "L" shaped cross-section in a cooperative manner.

[0108] The structure of the lower flange portion (326) can be varied according to the required conditions and design specifications. For example, a plurality of lower flange portions (326) may be provided on the outer surface of the second lower support portion (324) spaced apart along the circumferential direction of the second lower support portion (324), and may be arranged to face the upper flange portion (316).

[0109] According to another embodiment of the present invention, it is also possible to form the lower flange portion in a continuous ring shape along the circumferential direction of the second lower support portion.

[0111] The fastening member (330) can fasten the upper support ring (310) and the lower support ring (320) in various ways, and the present invention is not limited or restricted by the fastening structure and fastening method of the fastening member (330).

[0112] For example, the fastening member (330) may be configured to fasten the upper flange portion (316) and the lower flange portion (326).

[0113] According to a preferred embodiment of the present invention, an upper fastening hole (316a) may be formed in the upper flange portion (316) and a lower fastening hole (326a) may be formed in the lower flange portion (326), and a fastening member (330) may be fastened (e.g., screw fastening) to pass through the upper fastening hole (316a) and the lower fastening hole (326a).

[0114] For reference, in the embodiment of the present invention, the fastening member (330) is described as being fastened to the upper flange portion (316) and the lower flange portion (326), but according to another embodiment of the present invention, it is also possible to configure the fastening member to be fastened to any one of the first upper support portion, the second upper support portion, the first lower support portion, and the second lower support portion, or to any other portion.

[0116] Referring to FIG. 10, according to a preferred embodiment of the present invention, a housing (100) provided to surround the circumference of a support ring (300) may have a housing fastening hole (102) formed therein to which a fastening member (330) is fastened.

[0117] In this way, by forming a housing fastening hole (102) in the housing (100) and having the upper support ring (310) and lower support ring (320) positioned inside the housing (100), and by having the fastening member (330) fasten the upper support ring (310), lower support ring (320), and housing (100) together, an advantageous effect of simplifying the assembly and fastening process of the support ring (300) can be obtained.

[0118] According to another embodiment of the present invention, it is also possible to have the connection between the stator and the housing made by other members or structures.

[0120] Referring to FIGS. 3 to 8, according to a preferred embodiment of the present invention, the motor (10) may include a guide groove (212) formed on the outer circumference of a split core (210) along the axial direction of a stator (200), a first guide projection (314a) formed on the inner circumference of a second upper support part (314) and received in the guide groove (212), and a second guide projection (324a) formed on the inner circumference of a second lower support part (324) and received in the guide groove (212).

[0121] The first guide projection (314a) and the second guide projection (324a) may be formed in various structures that can be accommodated in the guide groove (212), and the present invention is not limited or restricted by the shape and structure of the first guide projection (314a) and the second guide projection (324a).

[0122] Preferably, the first guide projection (314a) and the second guide projection (324a) may be formed to have a cross-sectional shape (e.g., a square cross-section) corresponding to the guide groove (212).

[0123] In this way, by forming a guide groove (212) in the split core (210) and providing a first guide projection (314a) and a second guide projection (324a) on the inner circumference of the upper support ring (310) and the lower support ring (320), the position and orientation of the upper support ring (310) and the lower support ring (320) relative to the split core (210) can be stably maintained, and an advantageous effect of suppressing rotation of the upper support ring (310) and the lower support ring (320) relative to the split core (210) can be obtained.

[0124] For reference, in the embodiments of the present invention described above and illustrated, the motor (10) includes a first guide projection (314a) and a second guide projection (324a), and both the first guide projection (314a) and the second guide projection (324a) are received in the guide groove (212). However, according to another embodiment of the present invention, it is also possible to provide only one of the first guide projection and the second guide projection on the motor.

[0126] Referring to FIG. 2, according to a preferred embodiment of the present invention, a gap (G) may be provided between the upper support ring (310) and the lower support ring (320) and the outer surface of the core.

[0127] In this way, by forming a gap between the upper support ring (310) and the lower support ring (320) and the outer surface of the core, even if the split core (210) expands (radially expands) due to heat (e.g., heat to cure the varnish applied to the core), the stress acting on the core by the support ring (300) can be minimized, and natural shrinkage of the split core (210) can be ensured even when the split core (210) cools.

[0128] The size of the gap (G) 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 gap (G).

[0130] Referring to FIGS. 3 to 8, according to a preferred embodiment of the present invention, the motor (10) may include a fixing hole (214) formed on the upper and lower surfaces of a split core (210), a first fixing projection (312a) formed on the inner surface of a first upper support part (312) and received in the fixing hole (214) formed on the upper surface of the split core (210), and a second fixing projection (322a) formed on the inner surface of a first lower support part (322) and received in the fixing hole (214) formed on the lower surface of the split core (210).

[0131] In this way, by forming a fixing hole (214) in the split core (210) and forming a first fixing projection (312a) and a second fixing projection (322a) in the first upper support part (312) and the first lower support part (322), an advantageous effect can be obtained to maintain the arrangement state of the upper support ring (310) and the lower support ring (320) with respect to the split core (210) more stably.

[0132] In addition, by forming a fixing hole (214) in the split core (210) and forming a first fixing projection (312a) and a second fixing projection (322a) in the first upper support part (312) and the first lower support part (322), an advantageous effect of minimizing misassembly of the upper support ring (310) and the lower support ring (320) can be obtained.

[0133] That is, when the first fixing projection (312a) and the second fixing projection (322a) are positioned out of alignment with the fixing hole (214) along the vertical direction, the first fixing projection (312a) and the second fixing projection (322a) cannot be accurately inserted into the fixing hole (214), and the upper support ring (310) and the lower support ring (320) are positioned and protruded in an abnormal position, so the operator can easily determine whether the upper support ring (310) and the lower support ring (320) are incorrectly assembled.

[0134] The first fixing projection (312a) and the second fixing projection (322a) can be formed in various structures that can be accommodated in the fixing hole (214), and the present invention is not limited or restricted by the structure of the first fixing projection (312a) and the second fixing projection (322a).

[0135] For example, the first fixing projection (312a) and the second fixing projection (322a) may be formed in the shape of a projection having a circular cross-section, and the fixing hole (214) may be formed in the shape of a circular hole corresponding to the first fixing projection (312a) and the second fixing projection (322a).

[0136] As another example, referring to FIG. 9, it is also possible to form the first fixing projection (312a') and the second fixing projection (not shown) in the shape of a projection having a square cross-section, and to form the fixing hole (214') in the shape of a square hole corresponding to the first fixing projection (312a') and the second fixing projection.

[0138] 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

[0140] 10 : Motor 100 : Housing 102 : Housing fastening hole 200 : Stator 210: Split Core 212 : Guide Home 214 : Fixing hole 220: Stator coil 230 : Bobbin 300 : Support ring 310 : Upper support ring 312: 1st upper support part 312a : First fixing projection 314: Second upper support part 314a : First guide projection 316: Upper flange 316a : Upper fastening hole 320 : Lower support ring 322 : 1st lower support part 322a : Second fixing projection 324 : Second lower support part 324a : Second guide projection 326 : Lower flange 326a : Lower fastening hole 330 : Fastening member

Claims

Claim 1 A motor comprising: a stator including a plurality of segmented cores arranged to form a ring shape in a cooperative manner; a support ring including an upper support ring arranged to surround a portion of the outer surface of the segmented core and supporting the upper surface of the segmented core, and a lower support ring arranged to surround another portion of the outer surface of the segmented core and supporting the lower surface of the segmented core; a housing provided to surround the circumference of the support ring; and a fastening member for connecting the upper support ring and the lower support ring; wherein a housing fastening hole is formed in the housing to which the fastening member is connected, and the fastening member connects the upper support ring and the lower support ring to each other, and the support ring including the upper support ring and the lower support ring is connected to the housing. Claim 2 delete Claim 3 delete Claim 4 In claim 1, the motor comprises: a first upper support portion supporting the upper surface of the split core; a second upper support portion extending from the first upper support portion and arranged to surround the outer surface of the split core; and an upper flange portion protruding from the outer surface of the second upper support portion. Claim 5 In claim 4, the lower support ring comprises: a first lower support portion supporting the bottom surface of the split core; a second lower support portion extending from the first lower support portion and arranged to surround the outer surface of the split core; and a lower flange portion protruding from the outer surface of the second lower support portion to face the upper flange portion; a motor. Claim 6 In paragraph 5, the fastening member is a motor that fastens the upper flange portion and the lower flange portion. Claim 7 In claim 6, the motor comprises: an upper fastening hole formed in the upper flange portion; and a lower fastening hole formed in the lower flange portion; wherein the fastening member is a motor fastened to the upper fastening hole and the lower fastening hole. Claim 8 delete Claim 9 A motor according to claim 5, comprising: a guide groove formed on the outer surface of the split core along the axial direction of the stator; a first guide projection formed on the inner surface of the second upper support part and received in the guide groove; and a second guide projection formed on the inner surface of the second lower support part and received in the guide groove. Claim 10 A motor according to claim 5, comprising: fixing holes formed respectively on the upper and lower surfaces of the split core; a first fixing projection formed on the inner surface of the first upper support part and received in the fixing hole formed on the upper surface of the split core; and a second fixing projection formed on the inner surface of the first lower support part and received in the fixing hole formed on the lower surface of the split core. Claim 11 In claim 1, the upper support ring and the lower support ring are provided with the same structure as each other. Claim 12 A motor according to claim 1, wherein a gap is provided between the upper support ring and the lower support ring and the outer surface of the core.

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