Stator assembly and method for manufacturing same

Abstract

A stator assembly of a motor, having improved performance, is provided. The stator assembly comprises a back yoke, which is manufactured by stacking a plurality of stator core sheets in the axial direction and can be bent in the circumferential direction, and teeth extending radially inward from the back yoke, and comprises protrusions that protrude outward from the respective back yokes, and fixing portions provided on at least some of the protrusions so as to be coupled to each other in the stacking direction of the stator cores.

Description

Stator assembly and manufacturing method

[0001] The present disclosure relates to a stator of a motor, and to a stator assembly and a manufacturing method.

[0002] Typically, a motor consists of a rotor and a stator. The rotor and stator use a core made of conductive metal to generate the necessary magnetic field. Furthermore, laminated cores, manufactured by laminating multiple thin steel plates, are widely used.

[0003] Various methods have been attempted to laminate and join individual core sheets. For example, a stator can be completed by vertically welding the laminated core sheets.

[0004] This method of bonding core sheets by embossing in the stacking direction results in insufficient bonding strength due to partial bonding of only the embossed portion, which causes sheet separation and sheet shaking noise, and also reduces the performance of the motor due to destruction of the insulation of the core caused by the embossing.

[0005] Additionally, the performance of the motor may deteriorate due to increased iron loss caused by eddy current loss caused by insulation breakdown between core sheets.

[0006] One aspect of the present disclosure provides a stator assembly of a motor having improved performance.

[0007] One aspect of the present disclosure provides a stator assembly that improves the performance of a motor by fully coupling the stator core.

[0008] One aspect of the present disclosure provides a stator assembly capable of improving the fixing strength of a stator core by hardening the bond of the stator core through coil heating.

[0009] One aspect of the present disclosure provides a stator assembly of a motor capable of preventing vibration and noise.

[0010] One aspect of the present disclosure provides a stator assembly of a motor capable of improving the overall strength by improving the fixing strength and bonding strength of the stator core.

[0011] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0012] A stator assembly according to the invention comprises a stator assembly manufactured by stacking a plurality of stator core sheets along an axial direction, a back yoke provided to be bendable along a circumferential direction, and teeth extending radially inward from the back yoke, wherein the stator assembly includes a fixing portion provided to be protruded outward from each of the back yokes, and at least some of the protrusions are mutually connectable in the stacking direction of the stator cores.

[0013] A stator assembly according to the invention comprises a stator assembly manufactured by laminating a plurality of stator core sheets, a back yoke provided to be bendable along a circumferential direction, and teeth extending radially inward from the back yoke, wherein the back yoke includes a first region provided to allow an electromagnetic force to move, and a second region, excluding the first region, which deviates from a movement path of the electromagnetic force, and a fixing portion provided in the lamination direction of the stator core is provided in the second region.

[0014] A method for manufacturing a stator assembly according to the invention comprises: forming a core sheet in a chain shape, at least some of which are connected, bonding a thermosetting bond to the core, stacking the core sheets in a vertical direction, assembling insulation through insert injection to the stacked core, winding a coil around the core in which the insulation is injection-molded, bending the core into a circular shape, and hardening the bond through coil heating (Self-Bonding-Coil, SBC) by applying current to the core after the bending.

[0015] According to the invention, the performance of the stator assembly can be improved by complete coupling of the stator core.

[0016] According to the invention, the fixing strength of the stator core can be improved by hardening the bond of the stator core through coil heating.

[0017] According to the invention, vibration and noise can be prevented by strong bonding between individual stator core sheets.

[0018] According to the invention, the bonding strength of the stator core can be improved to improve the overall strength.

[0019] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned will be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains.

[0020] FIG. 1 is a drawing showing a stator assembly of a motor according to one embodiment.

[0021] FIG. 2 is a drawing showing a laminated core of the stator assembly illustrated in FIG. 1.

[0022] FIG. 3 is a drawing showing a stator core of the stator assembly illustrated in FIG. 1.

[0023] FIG. 4 is a diagram showing the magnetic flux of a laminated core according to one embodiment.

[0024] FIG. 5 is a drawing showing a fixed counterpart of a chain stator core according to one embodiment.

[0025] Figure 6 is a drawing showing the chain stator core illustrated in Figure 5 from above.

[0026] Fig. 7 is a drawing showing a state in which insulation is assembled to the chain stator core illustrated in Fig. 6.

[0027] Fig. 8 is a drawing showing a state in which winding work is performed on the insulation-assembled stayer core illustrated in Fig. 7.

[0028] FIG. 9 is a drawing showing a banding state of a chain stator core according to one embodiment.

[0029] Fig. 10 is a drawing showing the state of the winding heating of the stator core after banding as shown in Fig. 9.

[0030] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0031] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0032] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0033] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0034] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0035] The terms "part," "module," and "member" may be implemented in hardware or software. Depending on the embodiments, multiple "parts," "modules," or "members" may be implemented as a single component, or a single "part," "module," or "member" may include multiple components.

[0036] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0037] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0038] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0039] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0040] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0041] *Meanwhile, the terms “front,” “back,” “left,” “right,” “upper,” and “lower” used in the description below are defined based on the drawing, and the shape and position of each component are not limited by these terms.

[0042] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0043] FIG. 1 is a drawing showing a stator assembly of a motor according to one embodiment, FIG. 2 is a drawing showing a laminated core of the stator assembly shown in FIG. 1, FIG. 3 is a drawing showing a stator core of the stator assembly shown in FIG. 1, and FIG. 4 is a drawing showing magnetic flux of the laminated core according to one embodiment.

[0044] Referring to FIGS. 1 to 4, the stator assembly (10) of the motor is provided in a form in which insulation (20) is combined with a stator core (100).

[0045] The stator assembly (10) can be provided in a form in which insulation (20) with a coil (30) wound around a stator core (100) is combined.

[0046] The stator core (100) can be prepared by laminating thin core sheets. The stator core (100) includes a circular back yoke (110) and teeth (120) that protrude radially inward from the back yoke (110) and on which coils (30) are wound. The teeth (120) can be provided to extend inward from the back yoke (110). The teeth (120) can be arranged at equal intervals in the circumferential direction.

[0047] The space between two adjacent teeth (120) forms a slot (S). The slot (S) is a space formed by the inner side of the back yoke (110) and the inner side of the teeth (120), and a coil (30) wound around the teeth (120) can be positioned in the slot (S). A rotor (not shown) can be positioned in the central space of the teeth (120). The insulation (20) and the coil (30) will be described later.

[0048] The stator core (100) may be formed into a substantially circular ring with a plurality of members. The stator core (100) may include a chain portion (150) formed by connecting at least a portion of the back yoke (110). The stator core (100) may be a chain stator core formed by connecting at least a portion of the back yoke (110) to each other.

[0049] The back yoke (110) of the stator core (100) may be provided to be bendable along the circumferential direction. A plurality of back yokes (110) may be provided. The back yokes (110) may be provided to be connected to each other by a chain portion (150). Each of the back yokes (110) may be provided in an arc shape so as to form a circle when all of them are combined. The mutually contacting portions of adjacent back yokes (110) may be contacted by a contact portion (170). The contact portion (170) of the back yoke (110) may be provided to be connected to the chain portion (150).

[0050] Accordingly, the stator core (100) can be formed by laminating a plurality of thin steel plates. The stator core (100) can be formed by connecting six cores that are connected to each other by a chain portion (150) to form one stator core (100). In the present embodiment, six cores form one stator core (100), but the number of cores is not limited thereto. For example, the number of cores can be changed depending on the size or needs of the motor.

[0051] When all six cores are combined, each back yoke (110) may be configured to form a circle, and teeth (120) may be protruded inwardly from the back yoke (110).

[0052] Each back yoke (110) may be provided so that at least a portion of the back yokes (110) are connected to each other by a chain portion (150). Each back yoke (110) may be connected to each other by the chain portion (150). Each back yoke (110) may be brought into contact with an adjacent back yoke (110) by a contact portion (170). The contact portion (170) may be provided by being cut at a predetermined angle. The adjacent cores may form a circle by the contact portion (170). The contact portion (170) may be provided so that the back yokes (110) may form a circle. The contact portion (170) may be provided so that the two adjacent cores are firmly bonded together so that the stacked stator cores (100) maintain an overall circle shape and have a strong bonding force.

[0053] The back yoke (110) of the stator core (100) may be provided with a protrusion (130) that is provided to protrude outwardly. The protrusion (130) may be provided such that at least a portion of the back yoke (110) protrudes outwardly. The protrusion (130) may be provided such that an outer portion of the back yoke (110) protrudes radially outwardly. The protrusion (130) may be provided at a position corresponding to a tooth (120) that protrudes inwardly of the back yoke (110). In the present embodiment, the protrusion is illustrated as being arranged at a position corresponding to the tooth, but is not limited thereto. For example, the protrusion may be provided to protrude outwardly of the back yoke.

[0054] A fixing part (200) provided for coupling the stator core (100) may be provided on the back yoke (110) of the stator core (100). A fixing part (200) provided for coupling the stator core (100) may be provided on the protrusion (130) of the stator core (100).

[0055] A fixing portion (200) formed to be mutually coupled in the stacking direction of the stator core (100) may be provided on the back yoke (110) of the stator core (100). A fixing portion (200) formed to be mutually coupled in the stacking direction of the stator core (100) may be provided on the protruding portion (130) of the stator core (100). The fixing portion (200) may be provided to protrude in the axial direction of the stator core (100). In the present embodiment, the fixing portion is illustrated as having an embossed shape protruding in the stacking direction of the stator core, but is not limited thereto. For example, the fixing portion may be provided to be recessed in the axial direction of the stator core.

[0056] The fixed part (200) can be provided to increase the bonding force between the stator core (100) and the stacked stator core (100).

[0057] The fixing portion (200) may be provided as at least one of the protrusions (130) formed on the back yoke (110) of the stator core (100). The fixing portion (200) may be provided as at least one of the protrusions (130) of the back yoke (110). The fixing portion (200) may be provided on one side and the other side of the back yoke (110) of the stator core (100), respectively. The fixing portion (200) of the stator core (100) may be provided to improve the bonding strength of the individual sheets of the stacked stator core (100). In the present embodiment, the fixing portion is illustrated as being provided on one end and the other end of the back yoke, respectively, but is not limited thereto. The fixing portion may be positioned so as to be located on a protrusion adjacent to the protrusion when the stator core is in a bent state.

[0058] The stator core (100) may be a bonding core including a bond. The bond bonded to the stator core (100) may be a thermosetting bond. The bond applied to the stator core (100) is designed to be cured at 100 to 140°C.

[0059] The stator core (100) to which such bonds are bonded can strengthen the bonding force between the individual sheets of the stator core (100). The stator core (100) can be strongly connected by the bonds. As will be described later, the bonding of the stator core (100) can be hardened with heat by applying current to the windings. That is, the bond bonded to the stator core (100) can be hardened with heat by heating the windings of the coil (30) described later, thereby preventing the individual sheets of the stator core (100) from separating and improving noise.

[0060] Figure 3 schematically shows the magnetic state of the stator core (100). A magnet (not shown) is installed at the center of the stator core (100), and electromagnetic force can move radially outward from the central magnet along the teeth (120) and back yoke (110).

[0061] The back yoke (110) of the stator core (100) may include a first region (A1) provided to allow electromagnetic force to move, and a second region (A2) provided to deviate from the path of movement (arrow) of the electromagnetic force, excluding the first region (A1).

[0062] A first region (A1) in which an electromagnetic force is provided to move in a stator core (100) may include teeth (120) and a back yoke (110). A second region (A2) in the stator core (100), excluding the first region (A1), which is out of the path of movement of the electromagnetic force, may include a protrusion (130) of the back yoke (110). The protrusion (130) is provided to protrude outward from the back yoke (110) so as to be out of the path of movement of the electromagnetic force moving toward the back yoke (110) through the teeth (120).

[0063] Therefore, when laminating the stator core (100), the bonding strength of the stator core (100) is improved to prevent the occurrence of fine gaps or lifting of the stator core, and performance degradation can be prevented by positioning the fixing part (200) on the protrusion (130) of the back yoke (110).

[0064] Fig. 4 is a drawing showing the state of movement of the electromagnetic force of the laminated stator core (100). The laminated stator core (100) can be firmly connected through a fixing member (200) formed on a protrusion (130) of the back yoke (110).

[0065] Additionally, the laminated stator core (100) can be completely bonded by bonding each individual sheet.

[0066] There is no μ-length separation, micro-gaps or cracks between the laminated stator cores (100), so that smooth movement of electromagnetic force and occurrence of noise, vibration and performance degradation can be prevented.

[0067] FIG. 5 is a drawing showing a fixed counterpart of a chain stator core according to one embodiment, FIG. 6 is a drawing showing the chain stator core shown in FIG. 5 from above, FIG. 7 is a drawing showing a state in which insulation is assembled to the chain stator core shown in FIG. 6, FIG. 8 is a drawing showing a state in which a winding operation is performed on the insulation-assembled stator core shown in FIG. 7, FIG. 9 is a drawing showing a bending state of a chain stator core according to one embodiment, and FIG. 10 is a drawing showing a winding heating state of the stator core after bending shown in FIG. 9. Hereinafter, descriptions of parts overlapping with the above descriptions are omitted.

[0068] Fig. 5 shows a state in which a plurality of core sheets are stacked to manufacture a stator core (100) of a stator assembly (10). The plurality of core sheets can be stacked in a vertical direction. The stator core (100) is composed of six cores connected to each other by a chain portion (150).

[0069] The chain portion (150) may be formed at both ends of the back yoke (110). The chain portion (150) may be provided to connect the back yoke (110) and an adjacent back yoke (110). The chain portion (150) may be formed on the outer portion opposite to the center of the circle based on the circular yoke shape of the back yoke (110). That is, it may be formed at both ends of the back yoke (110), and each of the back yokes (110) may have a shape in which they are connected by the chain portion (150).

[0070] The stator core (100) may be provided to form a circle when all six cores are combined. A connecting portion (160) may be provided at both ends of the six cores of the stator core (100) so as to be connected to each other. For example, a first connecting portion (161) may be provided at a back yoke (110) of a core located at one end of the six cores. A second connecting portion (162) may be provided at a back yoke (110) of a core located at the other end of the six cores. The first connecting portion (161) and the second connecting portion (162) may be connected when the stator core (100) is combined in a circle.

[0071] Each core may include a back yoke (110) and teeth (120) extending inwardly from the back yoke (110). Each back yoke (110) may be provided with a chain portion (150) for interconnection and a contact portion (170) for contacting each other during bending. The contact portion (170) may be located on the inner side of the chain portion (150).

[0072] The contact portion (170) may be provided so that the back yoke (110) and the adjacent back yoke (110) come into contact. The contact portion (170) may be formed on the outer portion opposite the center of the circle based on the arc yoke shape of the back yoke (110). That is, it may be formed on both ends of the back yoke (110) and may be formed on the inner portion opposite the center of the circle compared to the chain portion (150).

[0073] Each core may include a protrusion (130) that is provided to protrude outwardly from the back yoke (110). A fixing member (200) provided in the axial direction of the stator core (100) may be provided on the protrusion (130). The fixing member (200) may be provided on the protrusion (130) of a core located at one end and the other end of one of the six cores.

[0074] The core sheets of thin sheet metal can be firmly laminated through a fixing member (200) formed on a back yoke (110) to form a stator core (100).

[0075] The core sheets forming the stator core (100) can be laminated by bonding with a thermosetting bond that is cured at 100 to 140°C.

[0076] Figure 7 shows a state in which insulation (20) is combined with a stator core (100).

[0077] Insulation (20) is provided to surround the outer surface of the stator core (100). The insulation (20) can be formed by injection molding after positioning the stator core (100) in an insert injection mold.

[0078] The insulation (20) can fix the stator core (100) through insert injection. The stator core (100) can be assembled to the insulation (200) through insert injection while being coupled by the fixing member (200). The insert injection of the insulation (20) can be performed while the stator core (100) is fixed by the clamping force of the injection mold, so that the shape of the stator core (100) does not change. The bond bonded to the stator core (100) can include a bond that is hardened at 100°C or higher so as not to harden during insert injection of the insulation (20).

[0079] Fig. 8 is a drawing showing a state in which a coil (30) is installed on insulation (20). The coil (30) is provided so as to be able to generate magnetic force. The coil (30) is provided so as to be mounted on each tooth (120). The coil (30) is formed by winding a wire formed by covering an electric conductor such as copper with an insulating film.

[0080] When the coil (30) winding on the insulation (20) is completed, the stator core (100) is bent into a circle. (See Fig. 9)

[0081] After bending of the stator core (100), the coil (30) is wound by coil heating (Self-Bonding-Coil, SBC) by applying current. Coil heating is a winding method in which the bond attached to the film of the coil is hardened by applying current, thereby fixing the coils to each other. The coil (30) winding by coil heating (Self-Bonding-Coil, SBC) is performed at a temperature of approximately 150°C or higher so that the bond of the stator core (100) can be thermally hardened.

[0082] As described above, the method for manufacturing the stator assembly (10) comprises: punching out a chain-shaped core sheet, at least some of which is connected by a chain portion (150), bonding a thermosetting bond to the core sheet, stacking the core sheets in a vertical direction, assembling insulation (20) through insert injection to the stacked stator core, winding a coil (30) on the stator core (100) in which the insulation (20) is injection-molded, bending the stator core (100) into a circular shape, and winding the stator core (100) after bending by applying current to the coil heating (Self-Bonding-Coil, SBC), while simultaneously hardening the bond of the stator core (100).

[0083] According to one embodiment, a stator assembly (10) is manufactured by stacking a plurality of stator core (100) sheets along an axial direction, and includes a back yoke (110) that is provided to be bendable along a circumferential direction, and teeth (120) that extend radially inward from the back yoke; wherein the stator assembly (10) includes a protrusion (130) provided to protrude outward from each of the back yokes (110), and a fixing portion (200) provided to be mutually coupled to at least a portion of the protrusion (130) in the stacking direction of the stator core (100). According to the present disclosure, performance can be improved by complete coupling of the stator cores. Vibration and noise can be prevented by strong coupling force of the stator core sheets.

[0084] In addition, the fixing force of the stator core can be improved, and the bonding force of the stator core can be improved, thereby improving the overall strength.

[0085] The above-mentioned fixed part (200) is positioned so as to be positioned on the protrusion (130) and the protrusion (130) adjacent to the protrusion (130) in the bent state of the stator core (100). The above-mentioned fixed part (200) is formed to protrude or sink in the axial direction of the stator core. The above-mentioned fixed part (200) is positioned at a position away from the movement path of the electromagnetic force.

[0086] Therefore, the fixing force and bonding force of the stator core can be improved to improve the overall strength, and the performance degradation can be prevented by keeping the fixing part out of the path of electromagnetic force.

[0087] The above stator core is a bonding core including a bond, and the bond is a heat-curable bond. The bond is cured at 100 to 140°C.

[0088] The above stator assembly (10) includes insulation (20) arranged on the stator core (100) and a coil (30) wound on the insulation. The stator core is a chain stator core provided such that at least a portion of the back yoke is connected to each other. The stator assembly (10) assembles the insulation through insert injection while the stator core is coupled by the fixing portion. The coil is provided to be wound by coil heating (Self-Bonding-Coil, SBC) by applying current. The coil is heated so that the temperature of the coil becomes 150°C or higher. The coil heating is performed after bending of the stator core.

[0089] Therefore, the bond of the bonding core can be hardened by heating the coil winding, thereby simplifying the manufacturing process.

[0090] In a stator assembly (10) manufactured by laminating a plurality of stator core (100) sheets according to one embodiment, and including a back yoke (110) that is provided to be bendable along a circumferential direction, and teeth (120) extending radially inward from the back yoke, the back yoke (110) includes a first region (A1) through which an electromagnetic force is provided to move, and a second region (A2) that deviates from a movement path of the electromagnetic force, excluding the first region, and a fixing portion (200) provided in the lamination direction of the stator core (100) is provided in the second region (A2). According to the idea of ​​the present disclosure, performance can be improved by complete bonding of the stator cores. Vibration and noise can be prevented by strong bonding of the stator core sheets.

[0091] In addition, the fixing force of the stator core can be improved, and the bonding force of the stator core can be improved, thereby improving the overall strength.

[0092] The above back yoke (110) includes a protrusion (130) formed to protrude outward, and the fixing portion (200) is formed to protrude or sink in the protrusion (130) in the axial direction of the stator core. The second region (A2) includes the protrusion (130), and the fixing portion (200) is provided in the second region (A2).

[0093] Therefore, the fixed part (200) can be installed at a position away from the path of movement of the electromagnetic force of the stator core (100) to prevent performance degradation.

[0094] The above stator core is a bonding core including a bond, and the bond is a heat-curable bond that hardens at 100 to 140°C. The above stator assembly (10) includes insulation (20) disposed on the stator core (100) and a coil (30) wound on the insulation. The above stator assembly (10) assembles the insulation through insert injection while the stator core is coupled by the fixing member. The coil is arranged to be wound by coil heating (Self-Bonding-Coil, SBC) by applying current.

[0095] A method for manufacturing a stator assembly according to one embodiment comprises: punching out core sheets in a chain shape, at least some of which are connected, bonding a thermosetting bond to the core, stacking the core sheets in a vertical direction, assembling insulation through insert injection to the stacked cores, winding a coil around the core in which the insulation is injection-molded, bending the core into a circular shape, and hardening the bond through coil heating (Self-Bonding-Coil, SBC) by applying current to the core after the bending. According to the idea of ​​the present disclosure, performance can be improved by complete bonding of the stator cores. Vibration and noise can be prevented by strong bonding force of the stator core sheets.

[0096] Additionally, the bond of the stator core can be hardened through winding heating, thereby improving the fixing strength of the stator core and simplifying the manufacturing process.

[0097] The above illustrates and describes specific embodiments. However, the invention is not limited to the above-described embodiments, and those skilled in the art will readily appreciate that various modifications and implementations can be made without departing from the spirit and scope of the invention as set forth in the claims below.

Claims

1. A stator assembly comprising a back yoke manufactured by stacking a plurality of stator core sheets along an axial direction and configured to be bendable along a circumferential direction, and teeth extending radially inward from the back yoke; The above stator assembly, A stator assembly including a protrusion provided to protrude outwardly from each of the back yokes, and a fixing member provided to be mutually connectable to at least some of the protrusions in the stacking direction of the stator core.

2. In paragraph 1, The above fixed part, In the bending state of the above stator core, A stator assembly positioned so as to be positioned on the above protrusion and on the protrusion adjacent to the above protrusion.

3. In paragraph 1, The above fixed part, A stator assembly formed to protrude or sink in the axial direction of the above stator core.

4. In paragraph 1, A stator assembly in which the above-mentioned fixed portion is located at a position away from the path of movement of the electromagnetic force.

5. In paragraph 1, The above stator core is a bonding core including a bond, The above bond is a stator assembly which is a thermosetting bond.

6. In paragraph 5, The above bond is a stator assembly that is cured at 100 to 140°C.

7. In paragraph 1, The above stator assembly, Insulation and placed on the above stator core A stator assembly comprising a coil wound on the above insulation.

8. In paragraph 1, The above stator core, A stator assembly, which is a chain stator core, wherein at least a portion of the above back yokes are connected to each other.

9. In paragraph 7, The above stator assembly, A stator assembly in which the insulation is assembled through insert injection while the stator core is connected by the fixing member.

10. In paragraph 7, The above coil, A stator assembly designed to be wound by coil heating (Self-Bonding-Coil, SBC) by current application.

11. In paragraph 10, A stator assembly that heats the winding so that the temperature of the coil is 150°C or higher.

12. In paragraph 7, A stator assembly in which the winding heating is performed after bending of the stator core.

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