Motor and method for assembling motor

Abstract

The embodiment relates to a motor and an assembling method of the motor. The present invention relates to a motor and a method for assembling the same, and more specifically, it is possible to provide a motor and a method for assembling the motor, which can maintain a firmly coupled state by forming a coupling hole in any one of a housing and a fixing bracket and forming a plastic deformation portion in the other, and by being fixed by riveting after lamination, not only can greatly reduce the defective rate, but also can improve the reliability of the motor. And an independent fastening unit does not need to be used, so that the number of parts is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This embodiment relates to a motor comprising a housing and a fixing bracket, and a method for assembling the motor. Background Art

[0002] Generally, a vehicle is provided with an Electric Power Steering System (EPS) as a unit for ensuring the stability of a steering state by reducing the steering force of a steering wheel.

[0003] The electric power steering system drives the motor through the electronic controller according to the vehicle's driving conditions detected by the speed sensor, steering sensor and torque sensor, providing the driver with the best steering conditions.

[0004] That is, the electric power steering system reduces the steering effort by using the rotational force of the motor, allowing the driver to steer easily.

[0005] In the motor of the electric power steering device, when current is supplied to generate electromagnetic interaction between the stator and the rotor, the rotating shaft rotates in conjunction with the rotor and transmits power to the steering shaft.

[0006] The stator, the rotor and the rotating shaft are arranged inside the housing, and the housing is connected and fixed to the fixing bracket by fastening members such as bolts or rivets.

[0007] However, when the housing and the fixing bracket are fastened by fastening members such as bolts or rivets, there are problems such as reduced fastening force, inability to maintain a firmly coupled state, noise and vibration being generated during operation, and significantly reduced durability. Summary of the Invention

[0008] Problems to be solved by the invention

[0009] This embodiment can provide a motor and a method for assembling a motor, wherein the motor forms a coupling hole in any one of the housing and the fixing bracket and a plastic deformation portion in the other, and fixes them by caulking after lamination, thereby maintaining a firmly coupled state. This can not only significantly reduce the defective rate, but also eliminate the need for a separate fastening unit, thereby reducing the number of parts and improving production efficiency.

[0010] Means used to solve problems

[0011] On the one hand, this embodiment can provide a motor, including: a shell, which is provided with a accommodating space for configuring a rotating shaft inside, a support hole for rotatably setting the rotating shaft is formed on one side of the axial direction, and one or more coupling holes are provided along the circumferential direction with the support hole as the center; and a fixing bracket, which is provided with a through hole for the rotating shaft to pass through on one side of the axial direction, and one or more plastic deformation parts corresponding to the coupling hole are provided along the circumferential direction with the through hole as the center, the fixing bracket is combined with the shell, and the plastic deformation part includes a protrusion inserted into the coupling hole through a pressurizer and a clamping protrusion whose diameter is expanded from the protrusion and supported on the inner surface of the shell.

[0012] On the other hand, this embodiment can provide a motor, including: a fixed bracket, which is provided with a through hole for the rotating shaft to pass through on one side in the axial direction, and one or more coupling holes are provided in the circumferential direction with the through hole as the center; and a shell, which is provided with a support hole for the rotating shaft to be rotatably set on one side in the axial direction, and one or more plastic deformation parts corresponding to the coupling hole are provided in the circumferential direction with the support hole as the center, the shell is combined with the fixed bracket, and the plastic deformation part includes a protrusion inserted into the coupling hole through a pressurizer and a clamping protrusion whose diameter is expanded from the protrusion and supported on the outer surface of the fixed bracket.

[0013] On the other hand, this embodiment can provide a method for assembling a motor, including: a shell forming step, forming a support hole for rotatably setting the rotating shaft on one side of the shell in the axial direction, and forming more than one coupling holes along the circumferential direction with the support hole as the center; a fixed bracket forming step, forming a through hole for the rotating shaft to pass through on one side of the fixed bracket in the axial direction, and forming more than one plastic deformation part corresponding to the coupling hole along the circumferential direction with the through hole as the center; a shell installation step, installing the shell on the support block so that the coupling hole is located in the accommodating groove of the support block; a fixed bracket combining step, combining the fixed bracket on the shell so that the plastic deformation part is located in the coupling hole; and a pressurizing step, pressurizing the plastic deformation part by a pressurizer to form a protrusion and a snap-fit ​​protrusion, the protrusion is inserted into the coupling hole, and the snap-fit ​​protrusion expands in diameter from the protrusion and is supported on the inner surface of the shell.

[0014] Effects of the Invention

[0015] According to this embodiment, a motor and a method for assembling a motor can be provided. The motor forms a coupling hole in any one of the housing and the fixing bracket and forms a plastic deformation portion in the other, and is fixed by caulking after lamination, thereby maintaining a firmly coupled state. This not only significantly reduces the defective rate, but also eliminates the need for a separate fastening unit, thereby reducing the number of parts and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a side sectional view showing the motor according to the present embodiment.

[0017] Figure 2 is an exploded perspective view showing a portion of the motor according to the present embodiment.

[0018] Figures 3 to 14 is a side cross-sectional view illustrating a portion of an electric machine according to various embodiments.

[0019] Figure 15 is a flowchart illustrating an assembling method of the motor according to the present embodiment. DETAILED DESCRIPTION

[0020] Hereinafter, some embodiments of the present disclosure will be described in detail with reference to the illustrative drawings. When assigning figure marks to the constituent elements of each drawing, the same symbols are assigned to the same constituent elements as much as possible even if they are shown in different drawings. In addition, when describing the embodiments of the present invention, when it is judged that the specific description of the relevant well-known structure or function will make the gist of the technical idea of ​​the present invention unclear, the detailed description may be omitted. The terms used in this specification, such as "including", "having", "consisting of...", etc., are generally intended to allow the addition of other parts, unless these terms are used together with the term "only". When a constituent element is expressed in the singular, it may include the plural form unless otherwise expressly stated.

[0021] In addition, when describing the constituent elements of the present disclosure, terms such as "first," "second," "A," "B," "(a)," "(b)," etc. may be used. Such terms are only used to distinguish the constituent elements from other constituent elements, and the nature, order, sequence, or quantity of the corresponding constituent elements are not limited by such terms.

[0022] In the description of the positional relationship of constituent elements, when it is stated that two or more constituent elements are "connected," "coupled," or "linked," it should be understood that the two or more constituent elements may be directly "connected," "coupled," or "linked," or that the two or more constituent elements may be "connected," "coupled," or "linked" with other constituent elements "interposed." The other constituent element may be provided in one or more of the two or more constituent elements that are "connected," "coupled," or "linked" to each other.

[0023] In the description of the temporal flow relationship related to constituent elements, operating methods or production methods, when the temporal sequence relationship or process sequence relationship is described through words such as "after", "next", "then", "before", etc., discontinuous situations may also be included unless "immediately" or "directly" is used.

[0024] On the other hand, when referring to the numerical value of a constituent element or its corresponding information (e.g., level, etc.), even if there is no additional explicit description, the numerical value or its corresponding information should be interpreted as including the error range that may be caused by various factors (e.g., process factors, internal or external impact, noise, etc.).

[0025] Figure 1 is a side sectional view showing the motor according to this embodiment, Figure 2 is an exploded perspective view showing a portion of the motor according to the present embodiment, Figures 3 to 14 is a side cross-sectional view showing a portion of a motor according to various embodiments, Figure 15 is a flowchart illustrating an assembling method of the motor according to the present embodiment.

[0026] like Figure 1 and Figure 2 As shown, in the motor according to this embodiment, when current is supplied to generate electromagnetic interaction between the stator 40 and the rotor 50 , the rotating shaft 60 rotates in conjunction with the rotor 50 and transmits power to the steering shaft.

[0027] This embodiment can be applied to a column-type electric power steering device, a rack-driven electric power steering device, a steer-by-wire device, or the like.

[0028] The shell 200 is formed into a roughly cylindrical shape with one side closed in the direction of the rotating shaft 60 and the other side open, and a accommodating space S is formed inside to accommodate the stator 40, the rotor 50 and the rotating shaft 60, and a support hole 220 is formed on one side in the axial direction, and the rotating shaft 60 is rotatably set in the support hole 220.

[0029] Furthermore, the housing 200 has a flange portion 240 protruding radially outward at the other open end portion. The flange portion 240 has one or more fastening holes 242 for inserting fastening bolts to fix the cover 30 to the flange portion 240 .

[0030] The cover 30 is coupled to the other open side of the housing 200 and is formed with a support hole in which the rotation shaft 60 is rotatably disposed.

[0031] The stator 40 is disposed in the inner accommodation space S of the housing 200 to surround the rotor 50 , and is wound with a coil to cause electrical interaction with the rotor 50 .

[0032] The rotor 50 has a rotation shaft insertion hole formed at the center, and rotates by electrical interaction with the stator 40 .

[0033] The rotating shaft 60 is coupled to the rotating shaft insertion hole, rotates together with the rotor 50 , and transmits power to the steering shaft.

[0034] At this time, one side of the rotating shaft 60 is rotatably supported in the support hole 220 of the housing 200 through the first bearing 70 , and the other side is rotatably supported in the support hole of the cover 30 through the second bearing 80 .

[0035] The first bearing 70 is provided in the support hole 220 of the housing 200 and supports one side of the rotation shaft 60 to be rotatable.

[0036] The second bearing 80 is provided in the support hole of the cover 30 and rotatably supports the other side of the rotation shaft 60 .

[0037] The fixing bracket 100 is formed in a substantially cylindrical shape with one axial side closed and the other side open, and a through hole 120 through which the rotating shaft 60 passes is formed on one axial side.

[0038] Furthermore, the fixing bracket 100 has a flange portion 140 protruding radially outward at the other open end portion. The flange portion 140 has one or more fastening holes 142 formed therein for inserting fastening bolts to fix the flange portion 140 .

[0039] A portion of the housing 200 is inserted into the other open side of the fixing bracket 100 , and the fixing bracket 100 and the housing 200 are combined in a state where the axial inner surface of the fixing bracket 100 and the axial outer surface of the housing are in contact and stacked.

[0040] On the one hand, this embodiment includes: a shell 200, which is provided with an accommodating space S for accommodating the rotating shaft 60, a support hole 220 for rotatably setting the rotating shaft 60 is provided on one side of the axial direction, and one or more coupling holes 230 are provided along the circumferential direction with the support hole 220 as the center; and a fixed bracket 100, which is provided with a through hole 120 for the rotating shaft 60 to pass through on one side of the axial direction, and one or more plastic deformation parts 130 corresponding to the coupling holes 230 are provided along the circumferential direction with the through hole 120 as the center, and the fixed bracket 100 is combined with the shell 200.

[0041] The housing 200 is provided with an accommodation space S for accommodating the rotating shaft 60. A support hole 220 for rotatably setting the rotating shaft 60 is provided on one side in the axial direction. One or more coupling holes 230 are provided along the circumferential direction with the support hole 220 as the center.

[0042] The fixing bracket 100 is provided with a through hole 120 on one side in the axial direction for the rotating shaft 60 to pass through, and one or more plastic deformation parts 130 corresponding to the coupling holes 230 are provided along the circumferential direction with the through hole 120 as the center. The fixing bracket 100 is combined with the shell 200 through a riveting tool including a pressurizer such as a press punch 10 and a support block 20.

[0043] Among them, the plastic deformation part 130 includes: a protrusion 132, which is pressurized by the pressurizer and inserted into the coupling hole 230; and a snap-fit ​​protrusion 134, which, when pressurized, expands its diameter from the protrusion 132 through the accommodating groove 22 of the support block 20 and is supported on the inner surface of the shell 200.

[0044] Reference Figure 3 The plastic deformation portion 130 is formed with: a protrusion 132, a portion of which is plastically deformed and inserted into the coupling hole 230 when the pressurizing portion 12 of the pressurizing punch 10 is pressurized (riveted); and a snap-fit ​​protrusion 134, which is expanded in diameter from the protrusion 132 through the accommodating groove portion 22 of the support block 20 and supported on the inner surface of the shell 200.

[0045] That is, in this embodiment, a portion of the plastic deformation portion 130 is plastically deformed by a riveting tool and inserted into the coupling hole 230 , supported on the inner surface of the housing 200 , thereby fixing the housing 200 so as not to detach from the fixing bracket 100 .

[0046] At this time, the housing 200 may further include an enlarged diameter portion 232 with a stepped diameter enlarged on one side or the other side of the coupling hole 230 in the axial direction, so as to increase the supporting area of ​​the protrusion 132 .

[0047] Reference Figure 4 The diameter-enlarging portion 232 may be formed such that the other side of the coupling hole 230 in the axial direction thereof is stepped to enlarge its diameter toward the inner side of the support block 20 , thereby increasing the area of ​​the supporting protrusion 132 .

[0048] On the contrary, the diameter-enlarged portion 232 may be formed such that the diameter of one side of the coupling hole 230 in the axial direction increases stepwise toward the outside of the pressurizing tool such as the press punch 10 , thereby increasing the area of ​​the supporting protrusion 132 .

[0049] In addition, the housing 200 may further include an inclined portion 233 having a diameter that is obliquely enlarged on one or the other side of the coupling hole 230 in the axial direction, so as to increase the supporting area of ​​the protrusion 132 .

[0050] Reference Figure 5 The inclined portion 233 may be formed such that the other side of the coupling hole 230 in the axial direction thereof is inclined to expand in diameter toward the inner side of the support block 20 , thereby increasing the area of ​​the support protrusion 132 .

[0051] On the contrary, the inclined portion 233 may be formed so that one side of the coupling hole 230 in the axial direction thereof increases in diameter in an inclined manner toward the outside of a pressurizing tool such as the press punch 10 , thereby increasing the area of ​​the supporting protrusion 132 .

[0052] In addition, the housing 200 may further include a convex portion 234 formed in a convexly curved shape on an inner surface of the coupling hole 230 to increase a supporting area of ​​the protrusion 132 .

[0053] Reference Figure 6 The protrusion 234 protrudes in a shape that is convexly curved toward the center of the coupling hole 230 , so that the area of ​​the support protrusion 132 can be increased.

[0054] In addition, the housing 200 may further include a recess 235 formed in a concavely curved shape at an inner surface of the coupling hole 230 to increase a support area of ​​the protrusion 132 .

[0055] Reference Figure 7 The recess 235 is recessed in a shape that is concavely curved toward the center of the coupling hole 230 , so that the area of ​​the support protrusion 132 can be increased.

[0056] In addition, the shell 200 may also include an embedded groove portion 236, which is formed on the surface on the side facing the axial direction along the circumferential direction with the combining hole 230 as the center. The fixing bracket 100 may also include an embedded protrusion portion 136, which is formed on the surface of the plastic deformation portion 130 on the other side facing the axial direction to correspond to the embedded groove portion 236, and the embedded protrusion portion 136 is embedded in the embedded groove portion 236.

[0057] Reference Figure 8 The embedding groove 236 is formed on the surface of the shell 200 facing the axial direction along the circumferential direction with the coupling hole 230 as the center. During assembly, when the shell 200 is inserted into the fixing bracket 100, the embedding protrusion 136 is embedded in the embedding groove 236.

[0058] The fitting protrusion 136 is formed on the surface of the plastic deformation portion 130 facing the other side in the axial direction so as to correspond to the fitting groove 236 , and the fitting protrusion 136 is fitted into the fitting groove 236 .

[0059] In addition, the shell 200 may also include a guide protrusion 238, which is formed along the circumferential direction on the surface facing the other side of the axial direction with the coupling hole 230 as the center, so that the accommodating groove 22 of the support block 20 is configured at a position corresponding to the coupling hole 230, and the guide protrusion 238 is inserted into the accommodating groove 22.

[0060] The guide protrusion 238 is formed in a protruding shape along the circumferential direction on the surface of the shell 200 facing the other side of the axial direction with the coupling hole 230 as the center, so that the accommodating groove 22 of the support block 20 is configured at a position corresponding to the coupling hole 230, and the guide protrusion 238 is inserted into the accommodating groove 22.

[0061] In addition, the fixing bracket 100 may further include a guide groove portion 138 formed on the surface of the plastic deformation portion 130 facing the axial direction, so that the pressurizer is configured at a position corresponding to the plastic deformation portion 130 and the pressurizing portion 12 is inserted into the guide groove portion 138.

[0062] The guide groove 138 is formed in a concave shape on the surface of the plastic deformation portion 130 facing the axial direction, so that the pressing portion 12 of the pressing punch 10 is arranged at a position corresponding to the plastic deformation portion 130 and is inserted into the guide groove 138 .

[0063] A wedge-shaped portion 24 is protruding from the receiving groove 22 of the support block 20 , thereby making it easier to form the engaging protrusion 134 .

[0064] That is, the engaging protrusion 134 may also be formed by radially expanding the protrusion 132 through the wedge-shaped portion 24 .

[0065] On the other hand, this embodiment includes: a fixed bracket 100, which is provided with a through hole 120 on one side in the axial direction for the rotating shaft 60 to pass through, and one or more coupling holes 430 are provided in the circumferential direction with the through hole 120 as the center; and a shell 200, which is provided with a support hole 220 on one side in the axial direction for the rotating shaft 60 to be rotatably set, and one or more plastic deformation parts 330 corresponding to the coupling holes 430 are provided in the circumferential direction with the support hole 220 as the center, and the shell 200 is combined with the fixed bracket 100.

[0066] The fixing bracket 100 is provided with a through hole 120 on one side in the axial direction for the rotation shaft 60 to pass through, and one or more coupling holes 430 are provided along the circumferential direction with the through hole 120 as the center.

[0067] The shell 200 is provided with a support hole 220 on one side of the axial direction for rotatably setting the rotating shaft 60. One or more plastic deformation parts 330 corresponding to the coupling holes 430 are provided along the circumferential direction with the support hole 220 as the center. The shell 200 is combined with the fixing bracket 100.

[0068] At this time, the plastic deformation portion 330 includes: a protrusion 332, which is pressurized by the pressurizer and inserted into the coupling hole 430; and a snap-fit ​​protrusion 334, which, when pressurized, expands in diameter from the protrusion 332 through the accommodating groove portion 22 of the support block 20 and is supported on the outer surface of the fixing bracket 100.

[0069] Reference Figure 9The plastic deformation portion 330 is formed with: a protrusion 332, a portion of which is plastically deformed and inserted into the coupling hole 430 when pressurized (riveted) by the pressurizing portion 12 of the press punch 10; and a snap-fit ​​protrusion 334, which is expanded in diameter from the protrusion 332 through the accommodating groove portion 22 of the support block 20 and supported on the inner surface of the shell 200.

[0070] That is, in this embodiment, a portion of the plastic deformation portion 330 is plastically deformed by a riveting tool and inserted into the coupling hole 430 , supported on the outer surface of the fixing bracket 100 , thereby coupling the housing 200 to the fixing bracket 100 .

[0071] At this time, the fixing bracket 100 may include an enlarged diameter portion 432 having a stepped diameter enlarged on one side or the other side of the coupling hole 430 in the axial direction, so as to increase the supporting area of ​​the protrusion 332 .

[0072] Reference Figure 10 The diameter-enlarging portion 432 may be formed such that one side of the axial direction of the coupling hole 430 is stepped to enlarge its diameter toward the outer side of the support block 20 to increase the supporting area of ​​the protrusion 332 , thereby increasing the supported area of ​​the protrusion 332 .

[0073] On the contrary, the expanded diameter portion 432 can also be formed so that the diameter of the other side of the axial direction of the coupling hole 430 is steppedly expanded toward the inner side of the pressurizer such as the pressurizing punch 10 to increase the support area of ​​the protrusion 332, thereby increasing the area of ​​the protrusion 332 supported.

[0074] In addition, the fixing bracket 100 may include an inclined portion 433 having a diameter obliquely enlarged on one or the other side of the coupling hole 430 in the axial direction, so as to increase the supporting area of ​​the protrusion 332 .

[0075] Reference Figure 11 The inclined portion 433 may be formed such that one side of the coupling hole 430 in the axial direction thereof is inclined to expand in diameter toward the outer side of the support block 20 , thereby increasing the area of ​​the supporting protrusion 332 .

[0076] On the contrary, the inclined portion 433 may be formed so that the other side of the coupling hole 430 in the axial direction thereof increases in diameter in an inclined manner toward the inner side of a pressurizing tool such as the press punch 10 , thereby increasing the area of ​​the supporting protrusion 332 .

[0077] In addition, the housing 200 may include a convex portion 434 formed in a convexly curved shape at an inner surface of the coupling hole 430 to increase a supporting area of ​​the protrusion 332 .

[0078] Reference Figure 12The protrusion 434 protrudes in a shape that is convexly curved toward the center of the coupling hole 430 , so that the area of ​​the support protrusion 332 can be increased.

[0079] In addition, the housing 200 may further include a recess 435 formed in a concavely curved shape at an inner surface of the coupling hole 430 to increase a support area of ​​the protrusion 332 .

[0080] Reference Figure 13 , the recess 435 is recessed in a shape that is concavely curved toward the center of the coupling hole 430 , so that the area of ​​the supporting protrusion 332 can be increased.

[0081] In addition, the fixing bracket 100 may include an embedded groove portion 436, which is formed in a circumferential direction on the surface facing the other side of the axial direction with the coupling hole 430 as the center. The shell 200 may also include an embedded protrusion portion 336, which is formed on the surface of the plastic deformation portion 330 facing the axial direction to correspond to the embedded groove portion 436, and the embedded protrusion portion 336 is embedded in the embedded groove portion 436.

[0082] Reference Figure 14 The embedding groove 436 is formed along the circumferential direction on the surface of the fixing bracket 100 facing the other side of the axial direction with the coupling hole 430 as the center. During assembly, when the shell 200 is inserted into the fixing bracket 100, the embedding protrusion 336 is embedded in the embedding groove 436.

[0083] The fitting protrusion 336 is formed on the surface of the plastic deformation portion 330 facing the axial direction so as to correspond to the fitting groove 436 , and the fitting protrusion 336 is fitted into the fitting groove 436 .

[0084] In addition, the fixing bracket 100 may include a guide protrusion 438, which is formed on the surface facing the axial direction along the circumferential direction with the coupling hole 430 as the center, so that the accommodating groove 22 of the support block 20 is configured at a position corresponding to the coupling hole 430, and the guide protrusion 438 is inserted into the accommodating groove 22.

[0085] The guide protrusion 438 is formed on the surface of the fixing bracket 100 facing the axial direction and protrudes along the circumferential direction with the coupling hole 430 as the center, so that the accommodating groove 22 of the support block 20 is configured at a position corresponding to the coupling hole 430, and the guide protrusion 438 is inserted into the accommodating groove 22.

[0086] In addition, the housing 200 may include a guide groove 338 formed on the surface of the plastic deformation portion 330 facing the other side of the axial direction, so that the pressurizer is configured at a position corresponding to the plastic deformation portion 330, and the pressurizing portion 12 is inserted into the guide groove 338.

[0087] The guide groove 338 is formed in a concave shape on the surface of the plastic deformation part 330 facing the other side in the axial direction, so that the pressing part 12 of the pressing punch 10 is arranged at a position corresponding to the plastic deformation part 330 and the pressing part 12 is inserted into the guide groove 338 .

[0088] The receiving groove 22 of the support block 20 is protruded with a wedge-shaped portion 24 , so that the engaging protrusion 334 can be formed more easily.

[0089] That is, the engaging protrusion 334 may also be formed by radially expanding the protrusion 332 through the wedge-shaped portion 24 .

[0090] On the other hand, the present embodiment can provide a method for assembling a motor, including: a housing forming step S910, forming a support hole 220 on one side of the housing 200 in the axial direction for rotatably setting the rotating shaft 60, and forming one or more coupling holes 230 along the circumferential direction with the support hole 220 as the center; a fixing bracket forming step S920, forming a through hole 120 on one side of the fixing bracket 100 in the axial direction for the rotating shaft 60 to pass through, and forming one or more plastic deformation portions 130 corresponding to the coupling holes 230 along the circumferential direction with the through hole 120 as the center; a housing installation step S910. Step S930, install the shell 200 on the support block 20 so that the coupling hole 230 is located in the accommodating groove portion 22 of the support block 20; the fixing bracket coupling step S940, couple the fixing bracket 100 to the shell 200 so that the plastic deformation portion 130 is located in the coupling hole 230; and the pressurizing step S950, pressurize the plastic deformation portion 130 by a pressurizer to form a protrusion 132 and a snap-fit ​​protrusion 134, the protrusion 132 is inserted into the coupling hole 230, and the snap-fit ​​protrusion 134 expands in diameter from the protrusion 132 and is supported on the inner surface of the shell 200.

[0091] Reference Figure 15 In the shell forming step S910, a support hole 220 for rotatably setting the rotating shaft 60 is formed on one side of the axial direction of the shell 200, and one or more coupling holes 230 are formed along the circumferential direction with the support hole 220 as the center.

[0092] In the fixing bracket forming step S920 , a through hole 120 for the rotating shaft 60 to pass through is formed on one axial side of the fixing bracket 100 , and one or more plastic deformation portions 130 corresponding to the coupling holes 230 are formed along the circumferential direction around the through hole 120 .

[0093] In the housing mounting step S930 , the housing 200 is mounted on the support block 20 such that the coupling hole 230 is located at the receiving groove portion 22 of the support block 20 .

[0094] In the fixing bracket coupling step S940 , the fixing bracket 100 is coupled to the housing 200 such that the plastic deformation portion 130 is located in the coupling hole 230 .

[0095] In the pressurizing step S950, the plastic deformation part 130 is pressurized (riveted) by the pressurizing part 12 of the press punch 10 to form a protrusion 132 and a snap-fit ​​protrusion 134, wherein the protrusion 132 is inserted into the coupling hole 230, and the snap-fit ​​protrusion 134 expands in diameter from the protrusion 132 and is supported on the inner surface of the shell 200.

[0096] After the pressurizing step, the stator 40 , the rotor 50 , and the rotating shaft 60 are disposed inside the housing 200 , and the cover 30 is coupled to the other side of the housing 200 .

[0097] In which, in the shell molding step S910, an embedding groove portion 236 can be formed on the surface of the shell 200 on one side facing the axial direction, and in the fixing bracket molding step S920, an embedding protrusion portion 136 embedded in the embedding groove portion 236 can be formed on the surface of the plastic deformation portion 130 on the other side facing the axial direction to correspond to the embedding groove portion 236.

[0098] In addition, in the shell molding step S910 , a guide protrusion 238 inserted into the accommodating groove 22 may be formed on the surface of the shell 200 facing the other side in the axial direction, so that the accommodating groove 22 of the support block 20 is configured at a position corresponding to the coupling hole 230 .

[0099] In addition, during the molding step of the fixing bracket 100 , a guide groove 138 for inserting the pressurizing unit 12 may be formed on the axially facing surface of the plastic deformation portion 130 , so that the pressurizer is positioned corresponding to the plastic deformation portion 130 .

[0100] As described above, according to this embodiment, the motor forms a coupling hole in any one of the housing and the fixing bracket and forms a plastic deformation portion in the other, and is fixed by riveting after lamination, thereby maintaining a firmly coupled state. This not only significantly reduces the defective rate, but also eliminates the need for a separate fastening unit, thereby reducing the number of parts and improving production efficiency.

[0101] The above description is only used to illustrate the technical ideas of the present disclosure. As long as one is of ordinary skill in the technical field of the present disclosure, various modifications and variations can be made without departing from the essential characteristics of the technical ideas of the present disclosure. In addition, since these embodiments are not used to limit the technical ideas of the present disclosure but are used for illustration, the scope of the technical ideas of the present disclosure is not limited by these embodiments. The scope of protection of the present disclosure should be interpreted by the claims, and all technical ideas within the scope of equivalence should be interpreted as being included in the scope of the claims of the present disclosure.

Claims

1. A motor, characterized in that: include: The housing has an accommodating space for accommodating a rotating shaft, a supporting hole for rotatably arranging the rotating shaft on one side of the axial direction, and one or more coupling holes are arranged along the circumferential direction with the supporting hole as the center; as well as A fixed bracket is provided with a through hole for the rotating shaft to pass through on one side in the axial direction, and one or more plastic deformation parts corresponding to the coupling hole are provided in the circumferential direction with the through hole as the center. The fixed bracket is combined with the shell, and the plastic deformation part includes a protrusion and a clamping protrusion. The protrusion is inserted into the coupling hole through a pressurizer, and the clamping protrusion expands its diameter from the protrusion through the accommodating groove of the support block and is supported on the inner surface of the shell.

2. The motor according to claim 1, characterized in that The housing further comprises: The diameter-enlarged portion is formed by stepwise enlarging the diameter on one side or the other side of the axial direction of the coupling hole to increase the supporting area of ​​the protrusion.

3. The motor according to claim 1, characterized in that The housing further comprises: The inclined portion is formed by obliquely enlarging the diameter on one side or the other side of the axial direction of the coupling hole to increase the supporting area of ​​the protrusion.

4. The motor according to claim 1, characterized in that The housing further comprises: A convex portion is formed on an inner surface of the coupling hole in a convexly curved shape to increase a supporting area of ​​the protrusion.

5. The motor according to claim 1, characterized in that The housing further comprises: A recess is formed in an inner surface of the coupling hole in a concavely curved shape to increase a supporting area of ​​the protrusion.

6. The motor according to claim 1, characterized in that The housing further comprises: An embedding groove is formed on the surface of the housing facing the axial direction along a circumferential direction with the coupling hole as the center; The fixing bracket further comprises: An embedding protrusion is formed on a surface of the fixing bracket facing the other side in the axial direction to correspond to the embedding groove, and the embedding protrusion is embedded in the embedding groove.

7. The motor according to claim 1, characterized in that The housing further comprises: The guide protrusion is formed on the surface of the housing facing the other side of the axial direction along the circumferential direction with the coupling hole as the center, so that the accommodating groove of the support block is arranged at a position corresponding to the coupling hole, and the guide protrusion is inserted into the accommodating groove.

8. The motor according to claim 1, characterized in that The fixing bracket further comprises: A guide groove is formed on a surface of the plastic deformation portion facing one side in the axial direction, so that the pressurizer is arranged at a position corresponding to the plastic deformation portion and the pressurizing portion is inserted into the guide groove.

9. A motor, characterized in that: include: The fixed bracket is provided with a through hole for the rotating shaft to pass through on one side in the axial direction, and one or more coupling holes are provided along the circumferential direction with the through hole as the center; as well as The shell is provided with a support hole on one side in the axial direction for the rotating shaft to be rotatably set, and one or more plastic deformation parts corresponding to the coupling hole are provided in the circumferential direction with the support hole as the center. The shell is combined with the fixed bracket, and the plastic deformation part includes a protrusion and a clamping protrusion. The protrusion is inserted into the coupling hole through a pressurizer, and the clamping protrusion expands its diameter from the protrusion and is supported on the outer surface of the fixed bracket.

10. The motor according to claim 9, characterized in that The fixing bracket further comprises: The diameter-enlarged portion is formed by stepwise enlarging the diameter on one side or the other side of the axial direction of the coupling hole to increase the supporting area of ​​the protrusion.

11. The motor according to claim 9, characterized in that The fixing bracket further comprises: The inclined portion is formed by obliquely enlarging the diameter on one side or the other side of the axial direction of the coupling hole to increase the supporting area of ​​the protrusion.

12. The motor according to claim 9, characterized in that The fixing bracket further comprises: A convex portion is formed on an inner surface of the coupling hole in a convexly curved shape to increase a supporting area of ​​the protrusion.

13. The motor according to claim 9, characterized in that The fixing bracket further comprises: A recess is formed in an inner surface of the coupling hole in a concavely curved shape to increase a supporting area of ​​the protrusion.

14. The motor according to claim 9, characterized in that The fixing bracket further comprises: An embedding groove is formed on the surface of the fixing bracket facing the other side of the axial direction along the circumferential direction with the coupling hole as the center; The housing further comprises: An embedding protrusion is formed on a surface of the housing facing one side in the axial direction so as to correspond to the embedding groove, and the embedding protrusion is embedded in the embedding groove.

15. The motor according to claim 9, characterized in that The fixing bracket further comprises: The guide protrusion is formed on the surface of the fixing bracket facing the axial direction along the circumferential direction with the coupling hole as the center, so that the accommodating groove of the support block is arranged at a position corresponding to the coupling hole, and the guide protrusion is inserted into the accommodating groove.

16. The motor according to claim 9, characterized in that The housing further comprises: A guide groove is formed on a surface of the housing facing the other side in the axial direction so that the pressurizer is arranged at a position corresponding to the plastic deformation portion and the pressurizing portion is inserted into the guide groove.

17. A method for assembling a motor, characterized in that: include: a shell forming step, providing a support hole on one side of the shell in the axial direction for the rotation shaft to be rotatably arranged, and providing one or more coupling holes along the circumferential direction with the support hole as the center; a fixing bracket forming step of forming a through hole for the rotating shaft to pass through on one side of the fixing bracket in the axial direction, and forming one or more plastic deformation portions corresponding to the coupling holes along the circumferential direction with the through hole as the center; A housing installation step of installing the housing on the support block so that the coupling hole is located in the receiving groove portion of the support block; a fixing bracket combining step of combining the fixing bracket with the housing so that the plastic deformation portion is located at the combining hole; as well as A pressurizing step is performed by pressurizing the plastic deformation portion with a pressurizer to form a protrusion and a clamping protrusion, wherein the protrusion is inserted into the coupling hole, and the clamping protrusion is enlarged in diameter from the protrusion and supported on the inner surface of the housing.

18. The method for assembling a motor according to claim 17, wherein: In the housing molding step, an inserting groove is formed on a surface of the plastic deformation portion facing the axial direction. In the fixing bracket molding step, an embedding protrusion that is embedded in the embedding groove is formed on a surface of the fixing bracket facing the other side in the axial direction so as to correspond to the embedding groove.

19. The method for assembling a motor according to claim 17, wherein: In the housing molding step, a guide protrusion inserted into the receiving groove is formed on the surface of the plastic deformation portion facing the other side in the axial direction, so that the receiving groove of the support block is arranged at a position corresponding to the coupling hole.

20. The method for assembling a motor according to claim 17, wherein: In the fixing bracket molding step, a guide groove portion for inserting a pressurizing portion is formed on a surface of the plastic deformation portion facing the axial direction, so that the pressurizing portion is arranged at a position corresponding to the plastic deformation portion.

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