WO2021034036A1 - Arbre pour moteur de véhicule électrique - Google Patents

Arbre pour moteur de véhicule électrique Download PDF

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Publication number
WO2021034036A1
WO2021034036A1 PCT/KR2020/010855 KR2020010855W WO2021034036A1 WO 2021034036 A1 WO2021034036 A1 WO 2021034036A1 KR 2020010855 W KR2020010855 W KR 2020010855W WO 2021034036 A1 WO2021034036 A1 WO 2021034036A1
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WO
WIPO (PCT)
Prior art keywords
frame
shaft
hollow
protrusion
groove
Prior art date
Application number
PCT/KR2020/010855
Other languages
English (en)
Korean (ko)
Inventor
정종훈
Original Assignee
대성코리아(주)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 대성코리아(주) filed Critical 대성코리아(주)
Publication of WO2021034036A1 publication Critical patent/WO2021034036A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/003—Couplings; Details of shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/02—Shafts; Axles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/90—Vehicles comprising electric prime movers
    • B60Y2200/91—Electric vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2380/00—Electrical apparatus
    • F16C2380/26—Dynamo-electric machines or combinations therewith, e.g. electro-motors and generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Definitions

  • This embodiment relates to a shaft for an electric vehicle motor.
  • the shaft of a general industrial motor is a solid shaft, and a fan is used to reduce heat generated when the solid shaft rotates.
  • heat loss is not a big problem, but in the case of a moving electric vehicle that is not for fixing, there is a problem that the efficiency of the motor has an absolute influence on the electric efficiency.
  • the present embodiment is to provide a shaft for an electric vehicle motor including a hollow inside, light weight and improved NVH.
  • the shaft for an electric vehicle motor includes a body in which a hollow is formed; A first extension part extending from one end of the body in a first direction parallel to the axial direction; And a second extension part extending from the other end of the body in a second direction opposite to the first direction, wherein the hollow of the body comprises a first hollow and a first extending from the first hollow to the first direction. It includes a second hollow and a third hollow extending in the second direction from the first hollow, and a length of the second hollow in a direction perpendicular to the axial direction increases from the first hollow to the first direction It becomes smaller, and the length of the third hollow in a direction perpendicular to the axial direction may decrease from the first hollow to the second direction.
  • the first extension portion is formed inside and includes a first space portion extending in the first direction from the second hollow of the body, and the second extension portion is formed therein, and the hollow of the body It may include a second space portion extending in the second direction from the third hollow.
  • the body may include a portion recessed inward from an outer surface of the body, and the recessed portion of the body may extend along the axial direction.
  • the body includes a first groove formed on the outer surface of the body in a portion corresponding to the second hollow of the body, and the first groove is in a direction crossing the recessed portion of the body Can be extended.
  • the body may include a second groove formed on the outer surface of the body and spaced apart from the first groove, and the second groove may extend in a direction crossing the recessed portion of the body.
  • a length of the first groove in the axial direction may be smaller than a length in a direction perpendicular to the axial direction of the recessed portion of the body.
  • the body includes a protrusion protruding inward from the inner surface of the hollow of the body and a concave part that is depressed outward from the inner surface of the hollow of the body, and the protrusion and the concave may be alternately disposed.
  • the first extension portion includes a first portion extending in the first direction from the body, and a second portion extending in the first direction from the first portion of the first extension portion, and the first space portion A first area formed inside the first part of the first extension part and extending from the second hole of the hollow of the body, and the first space part formed inside the second part of the first extension part A second region extending from the first region may be included, and a length of the first region of the first space portion in a direction perpendicular to the axial direction may decrease toward the first direction.
  • a maximum length of the first space portion in a direction perpendicular to the axial direction may be larger than a length of the first space portion in a corresponding direction of the second region.
  • the second extension portion includes a third portion extending in the second direction from the body, and a fourth portion extending in the second direction from the third portion of the second extension portion, and the second space portion A third area formed inside the third part of the second extension part and extending from the third hole of the hollow of the body, and the second space part formed inside the fourth part of the second extension part A fourth region extending from the third region may be included, and a length of the third region of the second space in a direction perpendicular to the axial direction may decrease toward the second direction.
  • a maximum length of the third area of the second space in a direction perpendicular to the axial direction may be greater than a length of the second space in a direction corresponding to the fourth area.
  • a method of manufacturing a shaft for an electric vehicle motor includes: a first step of forming a body of a shaft by axial pipe including a hollow therein; A second step of forming a first extension part by axial tube end of the body; A third step of forming a groove in the hollow inner diameter portion of the body and the outer surface of the body; And a fourth step of forming a second extension part through the shaft of the other end of the body, wherein the third step includes forming an inner diameter part in the hollow of the body using a first frame (S1); And forming a groove on the outer surface of the body using a second frame (S2), wherein the first frame includes a plurality of protrusions protruding outward from the outer surface, and a plurality of concave inwardly from the outer surface A portion, wherein the first frame includes the plurality of protrusions and the plurality of concave portions alternately disposed along an outer peripheral surface of the first frame, the second frame includes a hollow formed therein
  • the inner diameter portion of the body may include a concave portion formed by the protruding portion of the first frame and a protruding portion formed by the concave portion of the first frame.
  • the outer surface of the body includes a first groove formed by the first protrusion of the second frame, and a second groove formed by the second protrusion of the second frame, and the first The groove and the second groove may be disposed opposite to each other about the axis of the shaft.
  • the first protrusion of the second frame may be symmetrical about the axis of the shaft and the second protrusion of the second frame, and the first and second grooves of the body may be symmetrical about the axis of the shaft. have.
  • the first step, the second step, the third step, and the fourth step may be integrally manufactured.
  • the first step, the second step, the third step, and the fourth step may be separately manufactured.
  • This embodiment includes a hollow inside to reduce weight and improve NVH.
  • the moving distance can be increased when the electric vehicle is charged once.
  • FIG 1 and 2 are perspective views of a shaft for an electric vehicle motor according to a ball embodiment.
  • FIG 3 is a plan view of a shaft for an electric vehicle motor according to the present embodiment.
  • FIG 4 is a cross-sectional view of a shaft for an electric vehicle motor according to the present embodiment.
  • FIG 5 is an enlarged view of a partial configuration of a shaft for an electric vehicle motor according to the present embodiment.
  • FIG. 6 is a view showing a first step of a method of manufacturing a shaft for an electric vehicle motor according to the present embodiment.
  • Figure 7 (a) is a view showing the step S1 of the third step of the manufacturing method of the shaft for an electric vehicle motor according to the present embodiment
  • (b) is a view showing the AA cross section of Figure 7 (a)
  • (c) is a view showing a cross-sectional view taken along BB in FIG. 7 (a).
  • Figure 8 (a) is a view showing the step S2 of the third step of the manufacturing method of the shaft for an electric vehicle motor according to the present embodiment
  • (b) is a view showing the DD section of Figure 8 (a)
  • (c) is a diagram showing the EE cross-section of FIG. 8 (a).
  • the singular form may include the plural form unless specifically stated in the phrase, and when described as "at least one (or more than one) of A and (and) B and C", it is combined with A, B, and C. It may contain one or more of all possible combinations.
  • first, second, A, B, (a), (b) may be used. These terms are only for distinguishing the component from other components, and are not limited to the nature, order, or order of the component by the term.
  • a component when a component is described as being'connected','coupled', or'connected' to another component, the component is directly'connected','coupled', or'connected' to the other component. In addition to the case, it may include a case where the component is'connected','coupled', or'connected' due to another component between the component and the other component.
  • top (top) when it is described as being formed or disposed under “top (top)” or “bottom (bottom)” of each component, “top (top)” or “bottom (bottom)” means that the two components are directly It includes not only the case of contact, but also the case where one or more other components are formed or disposed between the two components.
  • “upper (upper)” or “lower (lower)” when expressed as "upper (upper)” or “lower (lower)", the meaning of not only an upward direction but also a downward direction based on one component may be included.
  • FIG. 1 and 2 are perspective views of a shaft for an electric vehicle motor according to the present embodiment.
  • 3 is a plan view of a shaft for an electric vehicle motor according to the present embodiment.
  • 4 is a cross-sectional view of a shaft for an electric vehicle motor according to the present embodiment.
  • 5 is an enlarged view of a partial configuration of a shaft for an electric vehicle motor according to the present embodiment.
  • the shaft for an electric vehicle motor may include a body 100.
  • the body 100 may have a hollow 110 formed therein.
  • the hollow 110 may be formed in a circular shape. By forming the hollow 110 inside the shaft, it is possible to reduce weight and vibration. In addition, it is possible to reduce the cost by reducing the amount of processing through this.
  • the hollow 110 may include a first hollow 111.
  • the first hollow 111 may be formed in the central portion of the body 100.
  • the length of the first hollow 111 in the direction of the axis C may be greater than the maximum length of the second hollow 112 in the corresponding direction.
  • the length of the first hollow 111 in the direction of the axis C may be greater than the maximum length of the third hollow 113 in the corresponding direction.
  • the hollow 110 may include a second hollow 112.
  • the second hollow 112 may extend in the first direction from the first hollow 111.
  • the length L1 of the second hollow 112 in a direction perpendicular to the direction of the axis C may decrease from the first hollow 111 to the first direction.
  • the hollow 110 may include a third hollow 113.
  • the third hollow 113 may extend in the second direction from the first hollow 111.
  • the length L2 of the third hollow 113 in a direction perpendicular to the direction of the axis C may decrease from the first hollow 111 to the second direction.
  • the hollow 110 may include a protruding portion 114-1 and a concave portion 114-2.
  • the protrusion 114-1 and the concave portion 114-2 may be formed on the inner surface of the hollow 110.
  • the protrusion 114-1 may protrude inward from the inner surface of the hollow 110.
  • the concave portion 114-2 may be depressed outward from the inner surface of the hollow 110.
  • the protruding portion 114-1 and the concave portion 114-2 may be alternately disposed.
  • the protrusion 114-1 and the concave portion 114-2 may be disposed along the inner circumferential surface of the hollow 110.
  • the protrusion 114-1 and the concave portion 114-2 may be disposed along the inner circumferential surface of the first to third regions 111, 112, and 113 of the hollow 110. Heat generated when the motor rotates may be reduced through the protrusion 114-1 and the concave portion 114-2.
  • the protruding portion 114-1 and the concave portion 114-2 may serve as a fan to reduce heat.
  • the protruding portion 114-1 and the concave portion 114-2 may increase the electrical efficiency by increasing the cross-sectional area inside the hollow 110. That is, it is possible to improve the moving distance during a single charge.
  • the body 100 may include a recessed portion 121.
  • the recessed portion 121 may be recessed inward from the outer surface 120 of the body 100.
  • a step may be formed between the recessed portion 121 and the outer surface 120 of the body 100.
  • the recessed portion 121 may have a round shape.
  • Inclined surfaces may be formed at both ends of the recessed portion 121.
  • the inclined surface may connect the outer surface 120 and the recessed portion 121 of the body 100.
  • the recessed portion 121 may extend along the axis (C) direction.
  • There may be a plurality of recessed portions 121.
  • the recessed portion 121 may include two recessed portions 121.
  • the two recessed portions 121 may be disposed symmetrically around an axis.
  • the recessed portion 121 may be formed in plural.
  • the recessed portion 121 may include a first groove 124 and a second groove 125.
  • the body 100 may include a first groove 122.
  • the first groove 122 may be formed on the outer surface 120 of the body 100.
  • the first groove 122 may be formed in a portion of the hollow 110 of the body 100 corresponding to the second hollow 112.
  • the first groove 122 may extend in a direction crossing the recessed portion 121 of the body 100.
  • At least a portion of the first groove 122 may be disposed in the recessed portion 121 of the body 100.
  • At least a portion of the first groove 122 may be formed on an inclined surface of the recessed portion 121.
  • the first groove 122 may be disposed closer to the first extension part 200 than the second groove 123.
  • the length of the first groove 122 in the direction of the axis C may be smaller than the length in the direction perpendicular to the direction of the axis C of the recessed portion 121 of the body 100.
  • the body 100 may include a second groove 123.
  • the second groove 123 may be formed on the outer surface 120 of the body 100.
  • the second groove 123 may be spaced apart from the first groove 122.
  • the second groove 123 may extend in a direction crossing the recessed portion 121 of the body 100. At least a portion of the second groove 123 may be disposed in the recessed portion 121 of the body 100. At least a portion of the second groove 123 may be formed on an inclined surface of the recessed portion 121.
  • the second groove 123 may be disposed closer to the second extension part 300 than the first groove 122.
  • the length of the second groove 123 in the direction of the axis C may be smaller than the length in the direction perpendicular to the direction of the axis C of the recessed portion 121 of the body 100.
  • the body 100 may include a first extension part 200.
  • the first extension part 200 may extend from one end of the body 100 in a first direction.
  • the first direction may be a direction parallel to the axis (C) direction.
  • the first extension part 200 may include a first space part 210.
  • the first space part 210 may extend in the first direction from the second hollow 112 of the hollow 110 of the body 100.
  • the first space part 210 may include a first region 211 formed inside the first part 220 of the first extension part 200.
  • the first region 211 may extend from the second hollow 112 of the hollow 110 of the body 100.
  • the first space part 210 may include a second region 212 formed inside the second part 230 of the first extension part 200.
  • the second area 212 may extend from the first area 211 of the first space part 210.
  • the length L3 may decrease toward the first direction.
  • the maximum length in the direction perpendicular to the axis C direction of the first area 211 of the first space part 210 is the length in the corresponding direction of the second area 212 of the first space part 210 It may be formed larger than (L4).
  • the body 100 may include a second extension 300.
  • the second extension part 300 may extend in a second direction from the other end of the body 100.
  • the second direction may be a direction opposite to the first direction.
  • the second direction may be a direction parallel to the axis (C) direction.
  • the second extension part 300 may include a second space part 310.
  • the second extension part 300 may include a second space part 310.
  • the second space 310 may extend in the second direction from the third hollow 113 of the hollow 110 of the body 100.
  • the second space part 310 may include a third area 311 formed inside the third part 320 of the second extension part 300.
  • the third region 311 may extend from the third hollow 113 of the hollow 110 of the body 100.
  • the second space 310 may include a fourth region 312 formed inside the fourth portion 330 of the second extension 300.
  • the fourth area 312 may extend from the third area 311 of the second space 310.
  • the length L5 may decrease toward the second direction.
  • the maximum length in the direction perpendicular to the axis C direction of the third area 311 of the second space 310 is the length in the corresponding direction of the fourth area 312 of the second space 310 It may be formed larger than (L6).
  • FIG. 6 is a view showing a second step of the method of manufacturing a shaft for an electric vehicle motor according to the present embodiment.
  • Figure 7 (a) is a view showing the step S1 of the third step of the manufacturing method of the shaft for an electric vehicle motor according to the present embodiment
  • (b) is a view showing the AA cross section of Figure 7 (a)
  • (c) is a view showing a cross-sectional view taken along BB in FIG. 7 (a).
  • Figure 8 (a) is a view showing the step S2 of the third step of the manufacturing method of the shaft for an electric vehicle motor according to the present embodiment
  • (b) is a view showing the DD section of Figure 8 (a)
  • (c) is a diagram showing the EE cross-section of FIG. 8 (a).
  • the manufacturing method of a shaft for an automobile motor may include a first step of forming the body 100 of the shaft by axial pipe including a hollow therein.
  • the first step may be a step of forming a diameter according to the design of the body 100 of the shaft.
  • a separate frame of higher strength than the pipe can be used to conduit the pipe.
  • the diameter of the pipe is the same as the diameter of the body 100 of the shaft, the first step may be omitted.
  • the method of manufacturing a shaft for an automobile motor according to the present embodiment may include a second step of forming the first extension part 200 by axially connecting one end of the body 100.
  • the second step may include preparing a third frame 400.
  • the third frame 400 may include grooves 410 and 420.
  • the grooves 410 and 420 of the third frame 400 may include a first groove 410 and a second groove 420 extending from the first groove 410 of the third frame 400.
  • the diameter of the second groove 420 of the third frame 400 may be equal to or larger than the diameter of the body 100 of the shaft. In this case, the diameter may mean a length in a direction perpendicular to the axis C direction of the shaft.
  • the body 100 of the shaft may be seated in the second groove 420 of the third frame 400.
  • the diameter of the first groove 410 of the third frame 400 may be smaller than the diameter of the second groove 420 of the third frame 400. Through this, one end of the body 100 of the shaft can be shafted.
  • the second step may include seating one end of the body 100 of the shaft of the second groove 420 of the third frame 400.
  • the axis C of the shaft and the central axis of the third frame 400 may coincide.
  • the axis C of the shaft and the central axis of the first and second grooves 410 and 420 of the third frame 400 may be matched.
  • the second step may include reducing the diameter of one end of the body 100 of the shaft by pressing the third frame 400. At this time, it may be pressed in a direction parallel to the axis (C) direction of the shaft.
  • the body 100 of the shaft is inserted from the second groove 420 of the third frame 400 into the first groove 410 of the third frame 400 and is conduited to extend the first extension part 200. Can be formed.
  • the third frame 400 may have a strength greater than that of a pipe used as the body 100 of the shaft. Through this, one end of the body 100 of the shaft may be axially piped with a diameter corresponding to the diameter of the first groove 410 of the third frame 400. The diameter of the first groove 410 of the third frame 400 may be changed according to design.
  • a method of manufacturing a shaft for an automobile motor may include a third step of forming a groove in the hollow inner diameter portion of the body 100 and the outer surface of the body 100.
  • the third step is the step of forming an inner diameter part using the first frame 500 in the hollow of the body 100 (S1), and forming a groove using the second frame 600 on the outer surface of the body 100 It may include a step (S2).
  • step S1 may include aligning the body 100 and the first frame 500 of the shaft.
  • the axis C of the body 100 of the shaft and the axis of the first frame 500 may be matched.
  • the first frame 500 may include first to third regions 510, 520, and 530.
  • the diameter of the first region 510 of the first frame 500 may be smaller than the diameter of the second region 520 of the first frame 500. Through this, it may be easy to insert into the hollow 110 of the body 100. In addition, alignment of the axis C of the body 100 and the central axis of the first frame 500 may be facilitated.
  • the diameter of the first region 510 of the first frame 500 may be smaller than the diameter of the third region 530 of the first frame 500.
  • the second region 520 of the first frame 500 may include a plurality of protrusions 540 and a plurality of recesses 550.
  • the first frame 500 may include a plurality of protrusions 540 protruding outward from an outer surface, and a plurality of concave portions 550 recessed inward from an outer surface of the first frame 500.
  • a plurality of protrusions 540 and a plurality of concave portions 550 may be alternately disposed along the outer peripheral surface of the first frame 500.
  • the protruding portions 540 and the concave portions 550 of the first frame 500 may be alternately disposed.
  • the protruding portion 540 and the concave portion 550 of the first frame 500 may be formed on the entire outer circumferential surface of the second region 520 of the first frame 500.
  • Step S1 may include pressing the first frame 500.
  • the first frame 500 may be moved in a direction parallel to the axis C of the body 100 of the shaft.
  • the protrusion 114-1 and the concave portion 114-2 may be formed in the inner diameter of the hollow 110 of the body 100.
  • the protrusion 540 of the first frame 500 may form a concave portion 114-2 in the inner diameter of the hollow 110 of the body 100.
  • the concave portion 550 of the first frame 500 may form a protrusion 114-1 in the inner diameter portion of the hollow 110 of the body 100.
  • the diameter of the second region 520 of the first frame 500 may be the same as the diameter of the hollow 110 of the body 100.
  • the diameter of the second region 520 of the first frame 500 may mean a length from the protrusion 540 to the other protrusion 540.
  • the diameter of the third region 530 of the first frame 500 may be smaller than the diameter of the second region 520 of the first frame 500.
  • a length of the third region 530 of the first frame 500 in a direction parallel to the axis C of the shaft may be greater than a length of the shaft body 100 in a corresponding direction.
  • step S2 may include the step of aligning the shaft C and the shaft of the second frame 600 by the body 100 of the shaft.
  • the axis C of the body 100 of the shaft and the axis of the second frame 600 may be matched.
  • Step S2 may include inserting the body 100 of the shaft into the hollow 610 of the second frame 600.
  • the second frame 600 may include a hollow 610 formed therein.
  • the diameter of the hollow 610 of the second frame 600 may be larger than the diameter of the hollow 110 of the body 100 of the shaft.
  • the diameter of the hollow 610 of the second frame 600 may be larger than the diameter of the body 100 of the shaft. Through this, it may be inserted into the hollow 610 of the second frame 600 of the body 100 of the shaft.
  • the second frame 600 may include a first protrusion 620.
  • the first protrusion 620 may protrude inward from the inner surface of the second frame 600.
  • the first protrusion 620 may protrude inward from the inner surface of the hollow 610 of the second frame 600.
  • the second frame 600 may include a second protrusion 630.
  • the second protrusion 630 may protrude inward from the inner surface of the second frame 600.
  • the second protrusion 630 may protrude inward from the inner surface of the hollow 610 of the second frame 600.
  • the first and second protrusions 620 and 630 of the second frame 600 may be spaced apart from each other.
  • the second protrusion 630 of the second frame 600 may be disposed on the opposite side of the first protrusion 620 of the second frame 600 around the axis C of the body 100 of the shaft.
  • the first and second protrusions 620 and 630 of the second frame 600 may be symmetric about the axis C of the body 100 of the shaft.
  • Step S2 may include the step of pressing the body 100 of the second frame 600 is moved.
  • the second frame 600 may be pressed in a direction parallel to the axis C of the shaft.
  • the length in the direction perpendicular to the axis C of the shaft between the first protrusion 620 and the second protrusion 630 of the second frame 600 may be less than or equal to the diameter of the body 100 of the shaft. .
  • grooves 124 and 125 may be formed on the outer surface of the body 100.
  • the first protrusion 620 of the second frame 600 may form a first groove 124 on the outer surface of the body 100.
  • the second protrusion 630 of the second frame 600 may form a second groove 125 on the outer surface of the body 100.
  • the first groove 124 and the second groove 125 of the body 100 may be disposed opposite to each other about the axis C of the shaft.
  • the first and second grooves 124 and 125 of the body 100 may be symmetrical about the axis C of the shaft.
  • the method of manufacturing a shaft for an electric vehicle motor according to the present embodiment may include a fourth step of forming the second extension part 300 by axially connecting the other end of the body 100.
  • the fourth step may include preparing a fourth frame (not shown).
  • the fourth frame may include a groove (not shown).
  • the groove of the fourth frame may include a first groove (not shown) and a second groove (not shown) extending from the first groove of the fourth frame.
  • the diameter of the second groove of the fourth frame may be equal to or larger than the diameter of the body 100 of the shaft. In this case, the diameter may mean a length in a direction perpendicular to the axis C direction of the shaft.
  • the body 100 of the shaft may be seated in the second groove of the fourth frame.
  • the diameter of the first groove of the fourth frame may be smaller than the diameter of the second groove of the fourth frame. Through this, one end of the body 100 of the shaft can be shafted.
  • the fourth step may include seating the other end of the body 100 of the shaft in the second groove of the fourth frame. At this time, the axis C of the shaft and the central axis of the fourth frame may coincide. The axis C of the shaft and the central axis of the first and second grooves of the fourth frame may be matched.
  • the fourth step may include reducing the diameter of the other end of the body 100 of the shaft by pressing the third frame. At this time, it may be pressed in a direction parallel to the axis (C) direction of the shaft.
  • the body 100 of the shaft may be inserted from the second groove of the fourth frame into the first groove of the fourth frame and axially formed to form the second extension part 300.
  • the fourth frame may have a strength greater than that of a pipe used as the body 100 of the shaft. Through this, the other end of the body 100 of the shaft may be shafted with a diameter corresponding to the diameter of the first groove of the fourth frame. The diameter of the first groove of the fourth frame may be changed according to design.
  • the first step, the second step, the third step, and the fourth step may be integrally manufactured.
  • the first step, the second step, the third step and the fourth step in the manufacturing method of the shaft for an electric vehicle motor according to the present embodiment may be separately manufactured.
  • the first extension part 200 formed in the second step, the body 100 of the shaft having grooves on the inner and outer surfaces through the third step, and the second extension part 300 formed in the fourth step May be formed as a separate frame.
  • the first extension part 200, the body 100, and the second extension part 300 formed in each of the second to third steps may be joined by welding. That is, one end of the body 100 may be coupled to the first extension 200 by welding, and the other end of the body 100 may be coupled to the second extension 300 by welding.
  • irregularities in which protrusions and recesses are repeatedly formed may be formed in the inner diameter of the shaft.
  • the protruding portion and the concave portion may function as a fan.
  • components such as a separate fan can be omitted.
  • the electric efficiency of the electric vehicle can be increased.
  • the moving distance may be increased when the electric vehicle is charged once.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Ocean & Marine Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

La présente invention concerne un arbre pour moteur de véhicule électrique qui, selon un mode de réalisation, comprend : un corps dans lequel est formé un creux; une première partie étendue s'étendant à partir d'une extrémité du corps dans une première direction qui est parallèle à une direction axiale; et une seconde partie étendue s'étendant à partir de l'autre extrémité du corps dans une seconde direction qui est opposée à la première direction, le creux du corps comprenant : un premier creux; un deuxième creux s'étendant dans la première direction à partir du premier creux; et un troisième creux s'étendant dans la seconde direction à partir du premier creux, et la longueur du deuxième creux dans la direction perpendiculaire à la direction axiale pouvant progressivement diminuer dans la première direction à partir du premier creux, et la longueur du troisième creux dans la direction perpendiculaire à la direction axiale pouvant progressivement diminuer dans la seconde direction à partir du premier creux.
PCT/KR2020/010855 2019-08-19 2020-08-19 Arbre pour moteur de véhicule électrique WO2021034036A1 (fr)

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KR102117244B1 (ko) * 2019-08-19 2020-06-01 정종훈 전기 자동차 모터용 샤프트
DE102021102432A1 (de) 2021-02-03 2022-08-04 Bayerische Motoren Werke Aktiengesellschaft Baukastensystem für eine Rotorwelle einer elektrischen Maschine sowie eine elektrische Maschine mit einer Rotorwelle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004129407A (ja) * 2002-10-03 2004-04-22 Nissan Motor Co Ltd 電動機の冷却構造
KR101741452B1 (ko) * 2016-11-30 2017-05-30 엔에스파이프 주식회사 자동차 시트 부품용 샤프트바 제조방법 및 그 장치
KR20170125030A (ko) * 2015-03-05 2017-11-13 아르부르그 게엠베하 엔 코 카게 전기 모터용 로터, 관련된 모터 샤프트, 상기 모터 샤프트와 로터를 생산하는 방법
KR101951589B1 (ko) * 2015-06-03 2019-02-22 티센크룹 프레스타 텍센터 아게 중공 샤프트 배열체
JP2019049349A (ja) * 2017-07-24 2019-03-28 プファイファー・ヴァキューム・ゲーエムベーハー シャフト及びハブ及を有するシステム及びシャフト・ハブ接続生成方法
KR102117244B1 (ko) * 2019-08-19 2020-06-01 정종훈 전기 자동차 모터용 샤프트

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004129407A (ja) * 2002-10-03 2004-04-22 Nissan Motor Co Ltd 電動機の冷却構造
KR20170125030A (ko) * 2015-03-05 2017-11-13 아르부르그 게엠베하 엔 코 카게 전기 모터용 로터, 관련된 모터 샤프트, 상기 모터 샤프트와 로터를 생산하는 방법
KR101951589B1 (ko) * 2015-06-03 2019-02-22 티센크룹 프레스타 텍센터 아게 중공 샤프트 배열체
KR101741452B1 (ko) * 2016-11-30 2017-05-30 엔에스파이프 주식회사 자동차 시트 부품용 샤프트바 제조방법 및 그 장치
JP2019049349A (ja) * 2017-07-24 2019-03-28 プファイファー・ヴァキューム・ゲーエムベーハー シャフト及びハブ及を有するシステム及びシャフト・ハブ接続生成方法
KR102117244B1 (ko) * 2019-08-19 2020-06-01 정종훈 전기 자동차 모터용 샤프트

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