Stator assembly for wheel axle generator of vehicle

Abstract

A stator assembly (100) for an axle generator of a vehicle according to the present invention comprises: a stator core (110) comprising a cylindrical core base (110A) having an internal space and open at the top and bottom, a plurality of teeth (110B) formed protruding radially from the outer surface of the core base (110A), and a slot (110C) which is a space between the teeth and adjacent teeth; an upper insulator (111) and a lower insulator (112) respectively coupled to the upper and lower parts of the stator core (110); a PCB support (113) coupled to the upper part of the upper insulator (111); and a coil (114) wound on the tooth (110B) portion of the stator core (110) to which the upper and lower insulators (111, 112) are coupled; and a winding stator (11). The mold housing (10) comprises an upper housing (101) formed on the upper part of the winding stator (11), a lower housing (102) formed on the lower part of the winding stator (11), and a connecting part (103) connecting the upper housing (101) and the lower housing (102), wherein the mold housing (10) is formed by injection molding by injecting a molten resin by positioning the winding stator (11) in an insert injection mold.

Description

Technology Field

[0001] The present invention relates to a stator assembly for an axle generator of a vehicle. More specifically, the present invention relates to a stator assembly for an axle generator of a vehicle having a novel structure that can stably fix the stator assembly of the axle generator to the axle housing and prevent moisture from penetrating into the stator assembly. Background Technology

[0002] Generally, generators installed in vehicles produce electricity by rotating the generator through the rotation of a crank mechanism connected to the engine, and store the generated electricity in a battery for use. Since they are installed in conjunction with the vehicle's crank mechanism, there are constraints such as installation space.

[0003] To overcome these limitations, Korean Registered Patent No. 10-1665215 discloses an axle generator installed on the wheel portion of a vehicle to generate power through the rotation of the wheel. This prior art presents an axle generator with a structure in which a stator is installed on an arm member covering the upper side of the wheel, and a rotor, which rotates by the axle, is positioned inside the stator. However, with this structure, the fixation of the stator is unstable, and since the rotor rotates inside the stator, the size of the stator or rotor is limited, which may be disadvantageous in terms of power generation capacity or efficiency.

[0004] Japanese Patent Publication No. JP 2007-129805 discloses an in-wheel generator having a structure in which at least one part of a rotor and a stator is placed in a space enclosed by a wheel disc and a rim. In this prior art, the stator is coupled to a bearing, so there is a problem that the stator is difficult to fix stably, and the structure regarding how lead wires drawn from the stator are arranged is not disclosed.

[0005] In the two prior art technologies described above, the stator is positioned on the wheel side, so it is susceptible to exposure to external moisture or water, which can lead to failure of the generator or a decrease in efficiency due to moisture.

[0006] Accordingly, the present invention proposes a stator assembly for a vehicle axle generator having a new structure to solve the aforementioned problem. The problem to be solved

[0007] The objective of the present invention is to provide a stator assembly for a vehicle axle generator having a structure that can be stably fixed to an axle housing.

[0008] Another objective of the present invention is to provide a stator assembly for a vehicle axle generator that can prevent moisture from penetrating into the stator assembly.

[0009] Another objective of the present invention is to provide a stator assembly for a vehicle axle generator having a structure in which a lead wire can be stably connected.

[0010] The above-mentioned and other inherent objectives of the present invention can all be easily achieved by the present invention described below. means of solving the problem

[0011] The stator assembly (100) for an axle generator of a vehicle according to the present invention

[0012] A stator core (110) comprising a cylindrical core base (110A) having an internal space and open at the top and bottom, a plurality of teeth (110B) formed protruding radially from the outer surface of the core base (110A), and a slot (110C) which is a space between the teeth and adjacent teeth;

[0013] An upper insulator (111) and a lower insulator (112) respectively coupled to the upper and lower parts of the stator core (110);

[0014] A PCB support (113) coupled to the upper part of the upper insulator (111); and

[0015] A coil (114) wound on the tooth (110B) portion of the stator core (110) combined with the upper and lower insulators (111, 112);

[0016] A winding stator (11) including; and

[0017] A mold housing (10) comprising an upper housing (101) formed on the upper part of the winding stator (11), a lower housing (102) formed on the lower part of the winding stator (11), and a connecting part (103) connecting the upper housing (101) and the lower housing (102);

[0018] Includes,

[0019] The above mold housing (10) is characterized by being formed by positioning the above winding stator (11) in an insert injection mold and injecting a molten resin through injection molding.

[0020] In the present invention, a PCB mounting portion (101A) is formed on the upper part of the upper housing (101), and a PCB (3) may be installed on the PCB mounting portion (101A).

[0021] In the present invention, the coil (114) is connected to the magnetic terminal (113C-1) installed on the PCB support (113), and the magnetic terminal (113C-1) may protrude above the PCB mounting portion (101A).

[0022] In the present invention, the PCB support (113) has one or more hook coupling portions (113B), and a coupling hook (111A-1) formed on the upper insulator (111) may be coupled to the hook coupling portion (113B).

[0023] In the present invention, the PCB mounting portion (101A) may have a Hall sensor receiving hole (101A-6) formed therein that is in communication with the Hall sensor position portion (113D) formed in the PCB support (113A).

[0024] In the present invention, a plurality of press-fit protrusions (110A-1) are formed on the inner surface of the core base (110A) and protrude in a cylindrical direction, and the inner surface of the stator core (110) may be press-fitted into the outer surface of the axle housing by means of the press-fit protrusions (110A-1).

[0025] In the present invention, the upper housing (101) is further coupled to a sleeve (5), wherein the sleeve (5) preferably has a ring-shaped sleeve body (51) and one or more protruding coupling portions (51A) formed protruding upward from the sleeve body (51).

[0026] The stator assembly for an axle generator of a vehicle according to the present invention

[0027] A stator core (110) comprising a cylindrical core base (110A) having an internal space and open at the top and bottom, a plurality of teeth (110B) formed protruding radially from the outer surface of the core base (110A), and a slot (110C) which is a space between the teeth and adjacent teeth;

[0028] An upper insulator (111) and a lower insulator (112) respectively coupled to the upper and lower parts of the stator core (110);

[0029] A PCB support (113) coupled to the upper part of the upper insulator (111); and

[0030] A coil (114) wound on the tooth (110B) portion of the stator core (110) combined with the upper and lower insulators (111, 112);

[0031] A winding stator (11) including; and

[0032] A mold housing (10) comprising an upper housing (101) formed on the upper part of the winding stator (11), a lower housing (102) formed on the lower part of the winding stator (11), and a connecting part (103) connecting the upper housing (101) and the lower housing (102);

[0033] It includes, and a PCB mounting portion (101A) is formed on the upper part of the upper housing (101) so that the PCB (3) is installed, and

[0034] It further includes an extension cover (2) coupled to the radially outer side of the PCB mounting portion (101A), and

[0035] The above PCB (3) is characterized by being installed on the PCB mounting portion (101A) and the extension cover (2).

[0036] In the present invention, the lower portion of the PCB (3) may be supported to form a space by a plurality of first PCB support protrusions (101A-4) formed protruding upward from the PCB mounting portion (101A) and a plurality of second PCB support protrusions (22) formed protruding upward from the bottom portion (20A) of the cover body (20) of the extension cover (2).

[0037] In the present invention, a PCB sealing (30) is formed on the inner side of the PCB mounting portion (101A) and the cover body (20), and a PCB sealing (30) may also be formed in the space below the PCB (3).

[0038] In the present invention, a PCB guide (23) may be formed on the bottom portion (20A) to protrude upward and guide the outer circumference of the PCB (3).

[0039] In the present invention, a lead wire (32) is further included to extend upward from the PCB (3) and to connect to an external power source, and it is preferable that the lead wire (32) extends upward from a portion located at the bottom part (20A) of the extension cover (2). Effects of the invention

[0040] The present invention has the effect of providing a stator assembly for an axle generator of a vehicle having a structure that can be stably fixed to an axle housing, prevent moisture from penetrating into the stator assembly, stably connect lead wires, easily assemble the stator assembly to the axle housing, and prevent damage to the stator assembly. Brief explanation of the drawing

[0041] FIG. 1 is a perspective view showing a stator assembly for an axle generator of a vehicle according to the present invention. FIG. 2 is a side view showing a stator assembly for an axle generator of a vehicle according to the present invention. FIG. 3 is a disassembled perspective view of a stator assembly for an axle generator of a vehicle according to the present invention. FIG. 4 is a perspective view showing a winding stator of a stator assembly for an axle generator of a vehicle according to the present invention. FIG. 5 is a perspective view showing the winding stator of a stator assembly for an axle generator of a vehicle according to the present invention in an exploded view. FIG. 6 is a perspective view showing a mold housing of a stator assembly for an axle generator of a vehicle according to the present invention. FIG. 7 is a plan view showing a mold housing of a stator assembly for an axle generator of a vehicle according to the present invention. FIG. 8 is a perspective view showing a portion of a stator assembly for an axle generator of a vehicle according to the present invention removed. FIG. 9 is a perspective view showing a disassembled part of a stator assembly for an axle generator of a vehicle according to the present invention. FIG. 10 is a flowchart showing the manufacturing process of a stator assembly for an axle generator of a vehicle according to the present invention. The present invention will be described in detail below with reference to the attached drawings. Specific details for implementing the invention

[0042] FIG. 1 is a perspective view showing a stator assembly (100) for an axle generator of a vehicle according to the present invention, FIG. 2 is a side view showing a stator assembly (100) for an axle generator of a vehicle according to the present invention, and FIG. 3 is an exploded perspective view showing a stator assembly (100) for an axle generator of a vehicle according to the present invention.

[0043] As illustrated in FIGS. 1 to 3, a stator assembly (100) for an axle generator of a vehicle according to the present invention comprises a molded stator (1), an extension cover (2), a printed circuit board (PCB) (3), a lead wire cover (4), and a sleeve (5).

[0044] The mold stator (1) consists of a mold housing (10) and a winding stator (11) inside the mold housing. The winding stator (11) includes an upper insulator (111) and a lower insulator (112) coupled to the upper and lower parts of the stator core (110), and further includes a PCB support (113) coupled to the upper part of the upper insulator (111), and a coil (114) wound on the tooth (110B) portion of the stator core (110) and electrically connected to the magnetic terminal (113C-1) of the PCB support (113). The stator core (110) has a cylindrical core base (110A) that is open at the top and bottom and has an internal space. A plurality of press-fit protrusions (110A-1) are formed on the inner surface of the core base (110A) and protrude in the direction of the center of the cylinder. By pressing the inner surface of the stator core (110) into the outer surface of the axle housing by means of these multiple press-fit protrusions (110A-1), the stator assembly (100) can be firmly coupled to the axle housing.

[0045] The mold housing (10) is formed by injection molding by positioning the winding stator (11) in an insert injection mold. Therefore, the mold housing (10) becomes a single part integrally with the winding stator (11). Although the mold housing (10) is shown as being separated from the winding stator (11) in FIG. 3, this is merely a disassembled illustration for convenience of understanding, and the actual mold housing (10) cannot be separated from the winding stator (11). When injection molding the mold housing (10),

[0046] The mold housing (10) includes an upper housing (101) formed on the upper part of the winding stator (11), a lower housing (102) formed on the lower part of the winding stator (11), and a connecting part (103) that connects the upper housing (101) and the lower housing (102) by injecting a molten resin between the slots (110C) of the winding stator (11). A PCB mounting part (101A) is formed on the upper part of the upper housing (101), and the detailed configuration of this PCB mounting part (101A) will be explained again below.

[0047] An extension cover (2) is coupled to the PCB mounting portion (101A) formed on the upper part of the mold housing (10) to allow the axial outer diameter of the PCB (3) to be mounted. The PCB (3) is mounted on the inner side of the extension cover (2) and on the PCB mounting portion (101A) of the upper housing (101). As the PCB (3) is mounted on the PCB mounting portion (101A), its size is expanded toward the extension cover (2). A lead wire is drawn out from the upper part of this expanded portion, and the lead wire is wrapped and protected by a lead wire cover (4). The lead wire cover (4) consists of a corrugated tube (41) that wraps the lead wire and a connector (42) coupled to the upper part of the corrugated tube (41) and electrically connected to the end of the lead wire. A PCB sealing (30) is formed by injecting a molten resin, such as epoxy resin, into the inner space of the extension cover (2) and the PCB mounting portion (101A).

[0048] The sleeve (5) has a ring-shaped sleeve body (51) and is coupled to the upper part of the upper housing (101). One or more protruding coupling portions (51A) formed protruding upward from the sleeve body (51) are coupled to a flange (not shown) fixedly installed on the axle housing. Since the inner surface of the stator core (110) is pressed into the outer surface of the axle housing and the sleeve (5) is coupled to the flange of the axle housing, the stator assembly (100) according to the present invention achieves a strong and stable connection with the axle housing. A sealing member (52) may be coupled to the outer surface of the sleeve (5).

[0049] A plurality of coupling holes (51B) are formed by penetrating vertically through the sleeve body (51), and an insert nut (101B) is positioned in the upper housing (101) at a position corresponding to the coupling holes (51B). When the winding stator (11) is positioned in the insert injection mold to form the mold housing (10), the insert nut (101B) and the winding stator (11) are positioned together within the injection mold to form the mold housing (10), so that the insert nut (101B) is positioned on the upper part of the upper housing (101) and exposed upwards. Accordingly, the sleeve (5) is coupled to the upper part of the mold housing (10) by joining a screw (S) while the coupling holes (51B) and the insert nut (101B) are positioned vertically.

[0050] FIG. 4 is a perspective view showing a winding stator (11) of a stator assembly (100) for an axle generator of a vehicle according to the present invention, and FIG. 5 is a disassembled perspective view showing a winding stator (11) of a stator assembly (100) for an axle generator of a vehicle according to the present invention.

[0051] Referring to FIGS. 4 and FIGS. 5 together, the winding stator (11) of the stator assembly (100) according to the present invention includes a stator core (110), an upper insulator (111), a lower insulator (112), a PCB support (113), and a coil (114).

[0052] The stator core (110) is composed of a cylindrical core base (110A) that is open at the top and bottom, a plurality of teeth (110B) formed by protruding radially from the outer surface of the core base (110A), and a slot (110C) which is the space between the teeth. A plurality of press-fit protrusions (110A-1) are formed on the inner surface of the core base (110A) by protruding in the direction of the center of the cylinder. It is preferable that the plurality of press-fit protrusions (110A-1) be formed at positions symmetrical to each other, and while the number is not particularly limited, it is preferable to have at least three.

[0053] A first reference groove (110A-2) is formed in the vertical direction on the inner surface of the core base (110A). A second reference groove (101C) and a third reference groove (102A) are formed in the upper housing (101) and lower housing (102) at positions corresponding to the first reference groove (110A-2), forming a single long groove in which the three grooves are connected. This connected groove can be used as a reference point when performing injection molding or when winding the coil (114).

[0054] An insulating film (F) may be inserted into the slot (110C), which is the space between the teeth (110B) and the teeth. The insulating film (F) serves to insulate the space between the slot (110C) of the stator core (110) and the coil (114).

[0055] The upper insulator (111) is coupled to the upper part of the stator core (110). The upper insulator (111) includes an upper base insulating part (111A) covering the upper part of the core base (110A) and an upper tooth insulating part (111B) covering the upper part of the tooth (110B). One or more coupling hooks (111A-1) are formed in the upper base insulating part (111A) to have a structure in which a PCB support (113) can be coupled.

[0056] The lower insulator (112) is coupled to the lower part of the stator core (110). The lower insulator (111) includes a lower base insulating part (112A) covering the lower part of the core base (110A) and a lower tooth insulating part (112B) covering the lower part of the tooth (110B).

[0057] The PCB support (113) is a structure for providing an electrical connection between a PCB (3) and a coil, which is installed in the PCB mounting portion (101A) of the mold housing (10). The PCB support (113)

[0058] It includes a support base (113A) located on the upper part of a tooth (110B) on which a coil (114) is wound, a hook coupling part (113B) for coupling with a coupling hook (111A-1) formed on the upper base insulation part (111A) of an upper insulator (111), a plurality of terminal insertion parts (113C) for inserting a magnet terminal (113C-1), and a Hall sensor position part (113D) where a Hall sensor (33) is located. The upper portion of the magnet terminal (113C-1) protrudes into the PCB mounting part (101A) of the mold housing (10). The end of the coil (114) is connected to the lower part of the magnet terminal (113C-1).

[0059] The ends of the wound coil (114) are connected to the lower part of the magnet terminal (113C-1). For example, both ends of each coil can be connected to the magnet terminal connecting each phase of the three phases U, V, and W, and the magnet terminal connecting the neutral point.

[0060] FIG. 6 is a perspective view showing a mold housing (10) of a stator assembly (100) for an axle generator of a vehicle according to the present invention, FIG. 7 is a plan view showing a mold housing (10) of a stator assembly (100) for an axle generator of a vehicle according to the present invention, FIG. 8 is a perspective view showing a part of the stator assembly (100) for an axle generator of a vehicle according to the present invention removed, and FIG. 9 is a perspective view showing a part of the stator assembly (100) for an axle generator of a vehicle according to the present invention disassembled.

[0061] As illustrated in FIGS. 6 to 9, the mold housing (10) of the stator assembly (100) for an axle generator of a vehicle according to the present invention is made of a resin molding formed around a winding stator (11). The mold housing (10) is made of an upper housing (101), a lower housing (102), and a connecting part (103).

[0062] A PCB mounting portion (101A) formed on the upper part of the upper housing (101) is formed on the upper part of a support base (113A) coupled to a winding stator (11). On the periphery of the PCB mounting portion (101A), an outer wall (101A-1) formed extending upward on the radial outer side of the upper housing (101), an inner wall (101A-2) formed extending upward on the radial inner side of the upper housing (101), and a side wall (101A-3) formed protruding upward while connecting the ends of the outer wall and the inner wall are formed.

[0063] An extended opening (101A-1') is formed on the outer wall (101A-1), with the height protruding upward being lower than that of the two sides. An extension cover (2) is attached to the extended opening (101A-1'). A PCB (3) is placed on the PCB mounting portion (101A), and a portion of the PCB (3) is placed on the extension cover (2). That is, a portion of the PCB (3) is installed on the bottom portion (20A) of the extension cover (2), which is a space extended radially outward from the upper housing (101).

[0064] In the PCB mounting portion (101A), a plurality of PCB support protrusions (101A-4) are formed to protrude upward to support the lower surface of the PCB (3), a plurality of terminal holding portions (101A-5) are formed to support the upper portion of the Magmate terminal (113C-1) so as to expose it, and one or more Hall sensor receiving holes (101A-6) are formed in communication with the Hall sensor position portion (113D) as a space for a Hall sensor (33) mounted on the substrate (31) of the PCB (3).

[0065] The extension cover (2) is installed to support a portion of the PCB (3) and to provide a position from which a lead wire is drawn. The extension cover (2) includes a cover body (20) having a space formed by a bottom portion (20A) and a portion extending upward along the outer perimeter of the bottom portion, a wing portion (21) extending to both sides of the cover body (20) and coupled to an outer wall (101A-1), one or more second PCB support protrusions (22) formed protruding upward from the bottom portion (20A), and a PCB guide (23) protruding upward from the bottom portion (20A) to guide the outer perimeter of the PCB.

[0066] The PCB (3) includes a substrate (31) installed on the PCB mounting portion (101A) and the bottom portion (20A), a lead wire (32) installed on the bottom portion (20A) of the substrate (31) and extending upward, and one or more Hall sensors (33) mounted on the substrate (31).

[0067] The lower part of the substrate (31) is supported by the first PCB support projection (101A-4) and the second PCB support projection (22), so that a space is formed between the lower part of the substrate (31), the PCB mounting portion (101A), and the bottom portion (20A).

[0068] The PCB sealing (30) is formed by injecting and curing a molten resin, such as epoxy resin, around the PCB (3) while the PCB (3) is installed on the PCB mounting portion (101A) and the bottom portion (20A), thereby preventing damage to the PCB (3) and its components from the penetration of external moisture. At this time, the PCB sealing (30) is also formed in the space formed at the bottom of the substrate (31) to effectively seal the area around the PCB (3).

[0069] When forming the PCB sealing (30), the resin melt is injected while the corrugated tube (41) is installed to wrap around the lead wire (32).

[0070] The stator assembly (100) according to the present invention is fixedly installed in an axle housing. A disc drum, hub, rim, etc. are installed on the axle that rotates inside the axle housing and extends outside the axle housing, and a rotor that rotates outside the stator assembly (100) is installed on the inside of the disc drum. Accordingly, when the wheel rotates, the rotor rotates and generates electricity through interaction with the stator assembly (100). The generated alternating current power is converted into direct current power in a converter and can be used to charge a battery equipped in the vehicle.

[0071] It should be noted that the description of the invention provided above is merely illustrative for the purpose of understanding the invention and is not intended to define the scope of the invention. The scope of the invention is defined by the appended claims, and any simple variations or modifications of the invention within this scope should be understood to fall within the scope of protection of the invention. Explanation of the symbols

[0072] 1 : Stator 2 : Extension Cover 3 : PCB 4 : Lead wire cover 5 : Sleeve 10 : Mold housing 11: Winding stator 20: Cover body 20A : Bottom part 21 : Wing part 21A: Coupling groove 22: Second PCB support projection 23 : PCB Guide 30 : PCB Sealing 31: Substrate 32: Lead wire 33: Hall sensor 41: Corrugated tube 42 : Connector 51 : Sleeve body 51A: Protruding joint 51B: Joint hole 52: Sealing member 100: Stator assembly 101: Upper housing 101A: PCB mounting area 101A-1 : Exterior wall 101A-1' : Extension opening 101A-2 : Interior wall 101A-3 : Side wall 101A-4: 1st PCB support protrusion 101A-5: Terminal holding part 101A-6: Hall sensor receiving hole 101B: Insert nut 101C: Second reference groove 102: Lower housing 102A: Third reference groove 103: Connection part 110: Stator Core 110A: Core Base 110A-1: Press-fit projection 110A-2: First reference groove 110B : Teeth 110C : Slot 111: Upper insulator 111A: Upper base insulation 111B: Upper tooth insulation 111A-1: Connecting hook 112: Lower insulator 112A: Lower base insulation 112B: Lower tooth insulation 113: PCB support 113A: Support base 113B: Hook connection part 113C: Terminal insertion part 113C-1: Magmite terminal 113D: Hall sensor location 114: Coil F: Insulating film S: Screw

Claims

Claim 1 A winding stator (11) comprising: a cylindrical core base (110A) having an internal space and open at the top and bottom, a plurality of teeth (110B) formed protruding radially from the outer surface of the core base (110A), and a slot (110C) which is the space between the teeth and adjacent teeth; an upper insulator (111) and a lower insulator (112) respectively coupled to the upper and lower parts of the stator core (110); a PCB support (113) coupled to the upper part of the upper insulator (111); and a coil (114) wound on the tooth (110B) portion of the stator core (110) to which the upper and lower insulators (111, 112) are coupled; A stator assembly for an axle generator of a vehicle, comprising: an upper housing (101) formed on the upper part of the winding stator (11), a lower housing (102) formed on the lower part of the winding stator (11), and a connecting part (103) connecting the upper housing (101) and the lower housing (102); wherein the mold housing (10) is formed by injection molding by injecting a molten resin by positioning the winding stator (11) in an insert injection mold. Claim 2 A stator assembly for an axle generator of a vehicle, characterized in that, in claim 1, a PCB mounting portion (101A) is formed on the upper part of the upper housing (101), and a PCB (3) is installed on the PCB mounting portion (101A). Claim 3 A stator assembly for an axle generator of a vehicle, characterized in that, in paragraph 2, the coil (114) is connected to the magnetic terminal (113C-1) installed on the PCB support (113), and the magnetic terminal (113C-1) protrudes above the PCB mounting portion (101A). Claim 4 A stator assembly for an axle generator of a vehicle, characterized in that, in claim 1, the PCB support (113) has one or more hook coupling portions (113B), and a coupling hook (111A-1) formed on the upper insulator (111) is coupled to the hook coupling portion (113B). Claim 5 A stator assembly for an axle generator of a vehicle, characterized in that, in claim 1, a hall sensor receiving hole (101A-6) is formed in the PCB mounting portion (101A) and is in communication with the hall sensor position portion (113D) formed in the PCB support (113A). Claim 6 A stator assembly for an axle generator of a vehicle, characterized in that, in claim 1, a plurality of press-fit protrusions (110A-1) are formed on the inner surface of the core base (110A) and protrude in a cylindrical direction, and the inner surface of the stator core (110) is pressed into the outer surface of the axle housing by the press-fit protrusions (110A-1). Claim 7 A stator assembly for an axle generator of a vehicle, wherein, in claim 1, it further comprises a sleeve (5) coupled to the upper part of the upper housing (101), wherein the sleeve (5) has a ring-shaped sleeve body (51) and has one or more protruding coupling parts (51A) formed protruding upward from the sleeve body (51). Claim 8 A winding stator (11) comprising: a cylindrical core base (110A) having an internal space and open at the top and bottom, a plurality of teeth (110B) formed protruding radially from the outer surface of the core base (110A), and a slot (110C) which is the space between the teeth and adjacent teeth; an upper insulator (111) and a lower insulator (112) respectively coupled to the upper and lower parts of the stator core (110); a PCB support (113) coupled to the upper part of the upper insulator (111); and a coil (114) wound on the tooth (110B) portion of the stator core (110) to which the upper and lower insulators (111, 112) are coupled; A stator assembly for an axle generator of a vehicle, comprising: a mold housing (10) including an upper housing (101) formed on the upper part of the winding stator (11), a lower housing (102) formed on the lower part of the winding stator (11), and a connecting part (103) connecting the upper housing (101) and the lower housing (102); wherein a PCB mounting part (101A) is formed on the upper part of the upper housing (101) for installing a PCB (3), and further comprising an extension cover (2) coupled to the radially outer side of the PCB mounting part (101A), wherein the PCB (3) is installed on the PCB mounting part (101A) and the extension cover (2). Claim 9 A stator assembly for an axle generator of a vehicle, characterized in that, in claim 8, the lower part of the PCB (3) is supported to form a space by a plurality of first PCB support protrusions (101A-4) formed protruding upward from the PCB mounting portion (101A) and a plurality of second PCB support protrusions (22) formed protruding upward from the bottom portion (20A) of the cover body (20) of the extension cover (2). Claim 10 A stator assembly for an axle generator of a vehicle, characterized in that, in claim 9, a PCB sealing (30) is formed on the inner side of the PCB mounting portion (101A) and the cover body (20), and a PCB sealing (30) is also formed in the space below the PCB (3). Claim 11 A stator assembly for an axle generator of a vehicle, characterized in that, in claim 9, a PCB guide (23) is formed on the bottom portion (20A) to protrude upward and guide the outer circumference of the PCB (3). Claim 12 A stator assembly for an axle generator of a vehicle, characterized in that, in paragraph 2, it further includes a lead wire (32) that extends upward from the PCB (3) to connect to an external power source, and the lead wire (32) extends upward from a portion located at the bottom part (20A) of the extension cover (2).

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