TWI602384B - Motor, fan and rotor thereof - Google Patents
Motor, fan and rotor thereof Download PDFInfo
- Publication number
- TWI602384B TWI602384B TW105123937A TW105123937A TWI602384B TW I602384 B TWI602384 B TW I602384B TW 105123937 A TW105123937 A TW 105123937A TW 105123937 A TW105123937 A TW 105123937A TW I602384 B TWI602384 B TW I602384B
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- hub
- rotating shaft
- end portion
- motor rotor
- motor
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Motor Or Generator Frames (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Manufacture Of Motors, Generators (AREA)
Description
本發明係關於一種馬達及其轉子，尤其是一種具有透過射出成形方式包覆於轉軸外周之輪轂的馬達轉子、設有該馬達轉子的馬達及包含該馬達之風扇。 The present invention relates to a motor and a rotor thereof, and more particularly to a motor rotor having a hub that is coated on the outer circumference of the rotating shaft by injection molding, a motor provided with the motor rotor, and a fan including the motor.
請參照第1圖所示之一種習知馬達轉子9，該馬達轉子9包含一轉軸91及一輪轂92，該輪轂92設置於該轉軸91外周。該輪轂92可供設置數個葉片93，使該馬達轉子9旋轉時，能夠利用該數個葉片93驅風以產生氣流；或者，該輪轂92也可以設有其他需受該馬達轉子9帶動而旋轉的構件。 Referring to a conventional motor rotor 9 shown in FIG. 1, the motor rotor 9 includes a rotating shaft 91 and a hub 92. The hub 92 is disposed on the outer circumference of the rotating shaft 91. The hub 92 can be provided with a plurality of blades 93. When the motor rotor 9 rotates, the plurality of blades 93 can be used to drive air to generate airflow. Alternatively, the hub 92 can be provided with other rotors 9 to be driven by the motor. Rotating member.
該輪轂92可以透過射出成形方式成型於該轉軸91外周。在成型該輪轂92前，必須以一治具(例如：頂針)固定於該轉軸91的一端部911，以限制該轉軸91的位置。藉此，該輪轂92方能透過射出成形方式包覆於該轉軸91外周，並且確保該轉軸91凸伸於該輪轂92外的長度符合預定規格。其中，用以成形該輪轂92之塑料無法填充該治具所在的位置，因此該輪轂92將於該轉軸91的端部911形成一凹陷部921，使得該端部911之外周面與該輪轂92的接合部位形成裸露。 The hub 92 can be formed on the outer circumference of the rotating shaft 91 by injection molding. Before the hub 92 is formed, it must be fixed to one end portion 911 of the rotating shaft 91 by a jig (for example, a thimble) to limit the position of the rotating shaft 91. Thereby, the hub 92 can be wrapped around the outer circumference of the rotating shaft 91 by injection molding, and the length of the rotating shaft 91 protruding outside the hub 92 can be ensured to meet a predetermined specification. Wherein, the plastic used to form the hub 92 cannot fill the position of the jig, so the hub 92 will form a recess 921 at the end 911 of the rotating shaft 91, so that the outer peripheral surface of the end 911 and the hub 92 The joints form a bare joint.
惟，該馬達轉子9可以應用於具有含油軸承的馬達，由於該端部911之外周面與該輪轂92的接合部位形成裸露，在該馬達轉子9長時間使用下，所述含油軸承中的油體可能經由該端部911之外周面與該輪轂 92的接合部位滲出至該馬達轉子9外部，因而縮短該含油軸承的壽命，且可能造成該馬達轉子9汙損，或將導致該轉軸91與該輪轂92之間鬆動的情形，進而影響該馬達轉子9、設有該馬達轉子9之馬達或包含該馬達之風扇的使用壽命。 However, the motor rotor 9 can be applied to a motor having an oil-impregnated bearing, and since the joint portion of the outer peripheral surface of the end portion 911 and the hub 92 is exposed, the oil in the oil-impregnated bearing is used for a long time in use of the motor rotor 9. The body may pass through the outer surface of the end portion 911 and the hub The joint portion of 92 oozes out of the motor rotor 9, thereby shortening the life of the oil-impregnated bearing, and may cause the motor rotor 9 to be fouled, or may cause looseness between the rotating shaft 91 and the hub 92, thereby affecting the motor. The service life of the rotor 9, the motor provided with the motor rotor 9, or the fan containing the motor.
有鑑於此，習知馬達轉子9具有使用壽命較短的問題，確實有進一步改良之必要。 In view of this, the conventional motor rotor 9 has a problem of a short service life, and it is indeed necessary to further improve.
本發明係提供一種馬達轉子、設有該馬達轉子之馬達及包含該馬達之風扇，該馬達轉子可藉由封閉一轉軸之外周面與一輪轂的接合部位以避免該馬達中的油體經由所述接合部位滲出至該馬達轉子外部。 The present invention provides a motor rotor, a motor provided with the motor rotor, and a fan including the motor, which can prevent an oil body in the motor from passing through a joint portion of a peripheral surface of a rotating shaft and a hub. The joint is exuded to the outside of the motor rotor.
本發明實施例之馬達轉子包含：一轉軸，該轉軸於一軸向上之兩端各為一第一端部及一第二端部；及一輪轂，該輪轂透過射出成形方式包覆於該第一端部外周，該輪轂設有一凹陷部，該凹陷部沿該軸向與該第一端部對位；其中，在與該軸向垂直的徑向上，該凹陷部鄰近該第一端部的部分之內徑小於該第一端部之外徑，該輪轂之凹陷部與該轉軸之第二端部在該軸向上具有一第一距離，該轉軸之第一端部與該第二端部在該軸向上具有一第二距離，該第一距離等於該第二距離。 The motor rotor of the embodiment of the present invention comprises: a rotating shaft, the rotating shaft is a first end portion and a second end portion at one end in an axial direction; and a hub, the wheel hub is coated on the first through the injection forming manner An outer periphery of the end, the hub is provided with a recessed portion that is aligned with the first end portion along the axial direction; wherein, in a radial direction perpendicular to the axial direction, the recessed portion is adjacent to the portion of the first end portion The inner diameter of the hub is smaller than the outer diameter of the first end portion, and the recessed portion of the hub has a first distance in the axial direction from the second end of the rotating shaft, and the first end portion and the second end portion of the rotating shaft are at The axial direction has a second distance, the first distance being equal to the second distance.
其中，該轉軸之一外周面由該第一端部延伸至該第二端部，該輪轂封閉該轉軸之外周面與該輪轂的接合部位，藉以確保油體不會經由所述接合部位滲出至該馬達轉子外部。 Wherein an outer peripheral surface of the rotating shaft extends from the first end portion to the second end portion, the hub closes a joint portion of the outer peripheral surface of the rotating shaft and the hub, thereby ensuring that the oil body does not ooze through the joint portion to The motor is external to the rotor.
其中，該凹陷部係設置於該輪轂之一外表面，該外表面與該轉軸之第二端部在該軸向上具有一最大距離，該最大距離大於該第一距離。藉此，可確保該輪轂在該軸向上具有足夠的厚度以供封閉該轉軸之外周面與該輪轂的接合部位。 The recessed portion is disposed on an outer surface of the hub, and the outer surface and the second end of the rotating shaft have a maximum distance in the axial direction, and the maximum distance is greater than the first distance. Thereby, it is ensured that the hub has a sufficient thickness in the axial direction to close the joint portion of the outer peripheral surface of the rotating shaft with the hub.
其中，該轉軸於鄰近該第一端部的位置設有一壓花槽，該輪 轂包覆該壓花槽。藉此，該輪轂透過射出成形方式包覆於該轉軸外周時，能夠同時包覆該壓花槽，以提升該輪轂與該轉軸的結合強度。 Wherein the rotating shaft is provided with an embossing groove adjacent to the first end, the wheel The hub encloses the embossing groove. Thereby, when the hub is coated on the outer circumference of the rotating shaft by injection molding, the embossing groove can be simultaneously covered to increase the bonding strength between the hub and the rotating shaft.
一種馬達，設有如上所述之馬達轉子，且另包含：一定子，該定子包含一基座，該基座設有一軸管，該轉軸之第二端部係設置於該軸管中。 A motor comprising a motor rotor as described above, and further comprising: a stator, the stator comprising a base, the base being provided with a shaft tube, the second end of the shaft being disposed in the shaft tube.
其中，該軸管內設有一含油軸承，該轉軸係可旋轉地結合於該含油軸承。藉此，該馬達轉子能夠相對該定子旋轉。 Wherein, the shaft tube is provided with an oil bearing, and the shaft is rotatably coupled to the oil bearing. Thereby, the motor rotor is rotatable relative to the stator.
一種風扇，包含如上所述之馬達，且另包含：數個葉片，各該葉片設置於該馬達轉子之輪轂外周。藉此，該馬達轉子旋轉時能夠利用各該葉片驅風以產生氣流。 A fan comprising the motor as described above, and further comprising: a plurality of blades each disposed on an outer circumference of the hub of the motor rotor. Thereby, when the motor rotor rotates, each of the blades can be used to drive air to generate an air flow.
由此可知，本發明實施例之馬達轉子藉由在該輪轂設有凹陷部，並且使該凹陷部之內徑小於該轉軸的第一端部之外徑，能夠封閉該轉軸之外周面與該輪轂的接合部位，進而確保含油軸承中的油體不會經由所述接合部位滲出至該馬達轉子外部，以達到延長該馬達轉子、設有該馬達轉子之馬達或包含該馬達之風扇的使用壽命之功效。 Therefore, the motor rotor of the embodiment of the present invention can close the outer peripheral surface of the rotating shaft by providing a recessed portion in the hub and making the inner diameter of the recessed portion smaller than the outer diameter of the first end portion of the rotating shaft. The joint portion of the hub, thereby ensuring that the oil body in the oil-impregnated bearing does not seep out to the outside of the motor rotor via the joint portion, so as to extend the service life of the motor rotor, the motor provided with the motor rotor or the fan including the motor The effect.
1‧‧‧馬達轉子 1‧‧‧Motor rotor
11‧‧‧轉軸 11‧‧‧ shaft
111‧‧‧第一端部 111‧‧‧First end
112‧‧‧第二端部 112‧‧‧ second end
113‧‧‧外周面 113‧‧‧ outer perimeter
114‧‧‧壓花槽 114‧‧‧ embossing trough
12‧‧‧輪轂 12‧‧·wheels
121‧‧‧凹陷部 121‧‧‧Depression
122‧‧‧外表面 122‧‧‧ outer surface
123‧‧‧內表面 123‧‧‧ inner surface
124‧‧‧永久磁鐵組 124‧‧‧Permanent magnet set
2‧‧‧定子 2‧‧‧stator
21‧‧‧基座 21‧‧‧Base
211‧‧‧軸管 211‧‧‧ shaft tube
22‧‧‧含油軸承 22‧‧‧ Oil bearing
23‧‧‧鐵芯 23‧‧‧ iron core
24‧‧‧線圈組 24‧‧‧ coil set
3‧‧‧葉片 3‧‧‧ leaves
X‧‧‧軸向 X‧‧‧ axial
Y‧‧‧徑向 Y‧‧‧ radial
R1‧‧‧內徑 R1‧‧‧ inside diameter
R2‧‧‧外徑 R2‧‧‧ OD
T‧‧‧治具 T‧‧‧ fixture
A‧‧‧第一距離 A‧‧‧first distance
B‧‧‧第二距離 B‧‧‧Second distance
C‧‧‧最大距離 C‧‧‧Maximum distance
9‧‧‧馬達轉子 9‧‧‧Motor rotor
91‧‧‧轉軸 91‧‧‧ shaft
911‧‧‧端部 911‧‧‧ end
92‧‧‧輪轂 92‧‧·wheels
921‧‧‧凹陷部 921‧‧‧Depression
93‧‧‧葉片 93‧‧‧ leaves
第1圖：係習知馬達轉子的結構剖視圖。 Fig. 1 is a cross-sectional view showing the structure of a conventional motor rotor.
第2圖：係本發明馬達轉子實施例、設有該馬達轉子的馬達及包含該馬達之風扇的剖視示意圖。 Fig. 2 is a cross-sectional view showing a motor rotor embodiment of the present invention, a motor provided with the motor rotor, and a fan including the motor.
第3圖：係本發明馬達轉子實施例的局部放大剖視示意圖。 Fig. 3 is a partially enlarged cross-sectional view showing an embodiment of a motor rotor of the present invention.
第4圖：係本發明馬達轉子實施例之輪轂成形前以一治具抵接於轉軸的狀態示意圖。 Fig. 4 is a view showing a state in which a jig abuts on a rotating shaft before forming a hub of the motor rotor embodiment of the present invention.
第5圖：係本發明馬達轉子實施例之輪轂成形前以一治具限制轉軸的活動範圍的狀態示意圖。 Fig. 5 is a view showing a state in which the movable range of the rotating shaft is restricted by a jig before the hub of the motor rotor embodiment of the present invention is formed.
第6圖：係本發明馬達轉子實施例之輪轂完整包覆轉軸之第一端部的剖視示意圖。 Fig. 6 is a cross-sectional view showing the first end portion of the hub of the motor rotor embodiment of the present invention completely covering the rotating shaft.
為讓本發明之上述及其他目的、特徵及優點能更明顯易懂，下文特舉本發明之較佳實施例，並配合所附圖式，作詳細說明如下：請參照第2圖所示，本發明一實施例之馬達轉子1係包含一轉軸11及一輪轂12，該輪轂12設置於該轉軸11外周。 The above and other objects, features and advantages of the present invention will become more <RTIgt; The motor rotor 1 according to an embodiment of the present invention includes a rotating shaft 11 and a hub 12, and the hub 12 is disposed on the outer circumference of the rotating shaft 11.
該轉軸11沿一軸向X延伸，該轉軸11於該軸向X上之兩端各為一第一端部111及一第二端部112，該轉軸11之一外周面113由該第一端部111延伸至該第二端部112。該轉軸11較佳由結構強度較高的材質(例如：金屬)製成，惟不以此為限。 The rotating shaft 11 extends along an axial direction X. The two ends of the rotating shaft 11 in the axial direction X are a first end portion 111 and a second end portion 112. One outer peripheral surface 113 of the rotating shaft 11 is the first end surface 113. End portion 111 extends to the second end portion 112. The shaft 11 is preferably made of a material having a high structural strength (for example, metal), but is not limited thereto.
該輪轂12透過射出成形方式包覆於該第一端部111外周，該輪轂12設有一凹陷部121，該凹陷部121可以設置於該輪轂12之一外表面122，且該凹陷部121沿該軸向X與該第一端部111對位。此外，該輪轂12可以在與該外表面122相對之一內表面123設置一永久磁鐵組124。 The hub 12 is coated on the outer periphery of the first end portion 111 by means of injection molding. The hub 12 is provided with a recessed portion 121. The recessed portion 121 can be disposed on an outer surface 122 of the hub 12, and the recessed portion 121 is along the recessed portion 121. The axial direction X is aligned with the first end 111. Additionally, the hub 12 can be provided with a permanent magnet set 124 on an inner surface 123 opposite the outer surface 122.
請一併參照第3圖所示，在與該軸向X垂直的徑向Y上，該凹陷部121鄰近該第一端部111的部分之內徑R1小於該第一端部111之外徑R2。藉此，該轉軸11之外周面113與該輪轂12的接合部位將形成封閉。 Referring to FIG. 3 together, in the radial direction Y perpendicular to the axial direction X, the inner diameter R1 of the portion of the recessed portion 121 adjacent to the first end portion 111 is smaller than the outer diameter of the first end portion 111. R2. Thereby, the joint portion of the outer peripheral surface 113 of the rotating shaft 11 and the hub 12 is closed.
藉由上述結構，該實施例之馬達轉子1可供設置於一馬達中，且該馬達另包含一定子2，該定子2包含一基座21，該基座21設有沿該軸向X延伸之一軸管211，該軸管211內設有一含油軸承22，該轉軸11之第二端部112係可穿過該含油軸承22，以設置於該軸管211中，使該轉軸11形成可旋轉地結合於該含油軸承22。再者，該定子2可以設有一鐵芯23，該鐵芯23可以固定於該軸管211外周，該鐵芯23與該輪轂12的 永久磁鐵組124間係形成氣隙，且該鐵芯23外周可以繞設一線圈組24。藉此，該定子2之鐵芯23可以在該線圈24通電後，與該永久磁鐵組124產生磁交鏈感應以驅動該輪轂12，使該馬達轉子1能夠相對該定子2旋轉。 With the above structure, the motor rotor 1 of this embodiment can be disposed in a motor, and the motor further includes a stator 2, the stator 2 includes a base 21, and the base 21 is provided to extend along the axial direction X. An oil-impregnated bearing 22 is disposed in the shaft tube 211. The second end portion 112 of the rotating shaft 11 can pass through the oil-impregnated bearing 22 to be disposed in the shaft tube 211, so that the rotating shaft 11 is formed to be rotatable. The oil bearing 22 is coupled to the oil bearing 22 . Furthermore, the stator 2 can be provided with a core 23, which can be fixed to the outer circumference of the shaft tube 211, and the core 23 and the hub 12 An air gap is formed between the permanent magnet groups 124, and a coil group 24 can be wound around the outer circumference of the iron core 23. Thereby, the iron core 23 of the stator 2 can be magnetically coupled to the permanent magnet group 124 to drive the hub 12 after the coil 24 is energized, so that the motor rotor 1 can rotate relative to the stator 2.
其中，當該實施例之之馬達轉子1欲應用於一風扇，該馬達轉子1之輪轂12外周可以設有數個葉片3，各該葉片3可以與該輪轂12一體成形，該馬達轉子1、該定子2與各該葉片3可以共同構成該風扇。各該葉片3與該馬達轉子1作為該風扇之一扇輪，使得該馬達轉子1旋轉時能夠利用各該葉片3驅風以產生氣流。 Wherein, when the motor rotor 1 of the embodiment is to be applied to a fan, the outer circumference of the hub 12 of the motor rotor 1 may be provided with a plurality of blades 3, each of which may be integrally formed with the hub 12, the motor rotor 1, the motor The stator 2 and each of the blades 3 may together constitute the fan. Each of the vanes 3 and the motor rotor 1 serves as a fan of the fan, so that when the motor rotor 1 rotates, each of the vanes 3 can be used to drive air to generate an air flow.
本發明實施例之馬達轉子1藉由使該輪轂12的凹陷部121之內徑R1小於該轉軸11的第一端部111之外徑R2，能夠封閉該轉軸11之外周面113與該輪轂12的接合部位，進而確保該含油軸承22中的油體不會經由所述接合部位滲出至該馬達轉子1外部。 The motor rotor 1 of the embodiment of the present invention can close the outer peripheral surface 113 of the rotating shaft 11 and the hub 12 by making the inner diameter R1 of the recessed portion 121 of the hub 12 smaller than the outer diameter R2 of the first end portion 111 of the rotating shaft 11. The joint portion further ensures that the oil body in the oil-impregnated bearing 22 does not seep out to the outside of the motor rotor 1 via the joint portion.
請參照第4圖所示，該實施例之馬達轉子1的製造過程中，可以在成型該輪轂12前，以一治具T(例如：頂針)抵接於該轉軸11的第一端部111。藉此，該治具T可以直接抵接該轉軸11以限制其位置，使得該輪轂12能夠透過射出成形方式包覆於該轉軸11外周，並且確保該轉軸11具有該第二端部112的部分凸伸於該輪轂12外的長度符合預定規格，以提升該馬達轉子1的製造精確度。 Referring to FIG. 4, in the manufacturing process of the motor rotor 1 of this embodiment, a first end portion 111 of the rotating shaft 11 can be abutted by a jig T (for example, a thimble) before the hub 12 is molded. . Thereby, the jig T can directly abut the rotating shaft 11 to limit its position, so that the hub 12 can be wrapped around the outer circumference of the rotating shaft 11 by injection molding, and the rotating shaft 11 can be ensured to have the second end portion 112. The length protruding outside the hub 12 conforms to a predetermined specification to improve the manufacturing accuracy of the motor rotor 1.
請續參照第2圖所示，由於該治具T抵接於該轉軸11的第一端部111，而用以成形該輪轂12之塑料無法填充該治具T所在的位置，該輪轂12之凹陷部121與該轉軸11之第二端部112在該軸向X上具有一第一距離A，該轉軸11之第一端部111與該第二端部112在該軸向X上具有一第二距離B，該第一距離A將等於該第二距離B；換言之，該第一端部111係經由該凹陷部121連通該馬達轉子1外部，使得該輪轂12係包覆該第一端部111的一部分。 Referring to FIG. 2, since the jig T abuts the first end portion 111 of the rotating shaft 11, and the plastic for forming the hub 12 cannot fill the position where the jig T is located, the hub 12 The recessed portion 121 and the second end portion 112 of the rotating shaft 11 have a first distance A in the axial direction X, and the first end portion 111 and the second end portion 112 of the rotating shaft 11 have a first axis X in the axial direction X. a second distance B, the first distance A will be equal to the second distance B; in other words, the first end portion 111 communicates with the outside of the motor rotor 1 via the recess portion 121, so that the hub 12 covers the first end Part of the portion 111.
惟，請參照第5圖所示，該實施例之馬達轉子1的製造過程中，若該轉軸11凸伸於該輪轂12外的長度存在一裕度(例如該轉軸11凸伸於該輪轂12外的長度僅需大於一預定數值即符合需求)，則可在成型該輪轂12前，將一治具T固定於與該轉軸11的第一端部111具有一間隙的位置。藉此，該治具T能夠限制該轉軸11的活動範圍，使該轉軸11沿該軸向X移動時至多與該治具T形成抵接，因此該治具T仍可限制該轉軸11的位置，以確保該轉軸11具有該第二端部112的部分凸伸於該輪轂12外的長度大於該預定數值。 However, as shown in FIG. 5, in the manufacturing process of the motor rotor 1 of this embodiment, if the length of the rotating shaft 11 protrudes outside the hub 12, there is a margin (for example, the rotating shaft 11 protrudes from the hub 12). If the outer length only needs to be greater than a predetermined value, that is, the requirement is satisfied, a jig T can be fixed at a position having a gap with the first end portion 111 of the rotating shaft 11 before the hub 12 is molded. Thereby, the jig T can limit the range of movement of the rotating shaft 11 so that the rotating shaft 11 can at most abut against the jig T when moving along the axial direction X, so the jig T can still limit the position of the rotating shaft 11 To ensure that the portion of the rotating shaft 11 having the second end portion 112 protrudes beyond the hub 12 by a length greater than the predetermined value.
請參照第6圖所示，若該治具T與該轉軸11的第一端部111保持該間隙(即該轉軸11並未與該治具T形成抵接)，則用以成形該輪轂12之塑料將可填充該治具T與第一端部111之間隙，使得該輪轂12透過射出成形方式包覆於該轉軸11外周後，該第一距離A將大於該第二距離B；換言之，該輪轂12將可完整包覆該第一端部111。藉此，該第一端部111亦形成封閉於該輪轂12內，能夠防止該第一端部111氧化或汙損，進一步提升該馬達轉子1的密閉效果。 Referring to FIG. 6, if the jig T and the first end portion 111 of the rotating shaft 11 maintain the gap (that is, the rotating shaft 11 does not form abutment with the jig T), the hub 12 is shaped. The plastic will fill the gap between the jig T and the first end portion 111, so that after the hub 12 is coated on the outer circumference of the rotating shaft 11 by injection molding, the first distance A will be greater than the second distance B; in other words, The hub 12 will completely enclose the first end 111. Thereby, the first end portion 111 is also formed in the hub 12, and the first end portion 111 can be prevented from being oxidized or stained, thereby further enhancing the sealing effect of the motor rotor 1.
再者，該輪轂12之外表面122與該轉軸11之第二端部112在該軸向X上具有一最大距離C，該最大距離C大於該第一距離A。藉此，可確保該輪轂12在該軸向X上具有足夠的厚度以供封閉該轉軸11之外周面113與該輪轂12的接合部位。 Moreover, the outer surface 122 of the hub 12 and the second end 112 of the rotating shaft 11 have a maximum distance C in the axial direction X, and the maximum distance C is greater than the first distance A. Thereby, it is ensured that the hub 12 has a sufficient thickness in the axial direction X to close the joint portion of the outer peripheral surface 113 of the rotating shaft 11 with the hub 12.
除此之外，該實施例之馬達轉子1的轉軸11於鄰近該第一端部111的位置可以設有一壓花槽114，該輪轂12係包覆該壓花槽114。藉此，該輪轂12透過射出成形方式包覆於該轉軸11外周時，能夠同時包覆該壓花槽114，以提升該輪轂12與該轉軸11的結合強度。 In addition, the rotating shaft 11 of the motor rotor 1 of this embodiment may be provided with a embossing groove 114 at a position adjacent to the first end portion 111, and the hub 12 covers the embossing groove 114. Thereby, when the hub 12 is coated on the outer circumference of the rotating shaft 11 by injection molding, the embossing groove 114 can be simultaneously covered to increase the bonding strength between the hub 12 and the rotating shaft 11.
綜上所述，本發明實施例之馬達轉子1藉由在該輪轂12設有凹陷部121，並且使該凹陷部121之內徑R1小於該轉軸11的第一端部 111之外徑R2，能夠封閉該轉軸11之外周面113與該輪轂12的接合部位，進而確保該含油軸承22中的油體不會經由所述接合部位滲出至該馬達轉子1外部。相較前述習知馬達轉子9之含油軸承中的油體可能經由該端部911之外周面與該輪轂92的接合部位滲出至該馬達轉子9外部，本發明實施例之馬達轉子1確實能夠避免漏油造成汙損或防止該轉軸11與該輪轂12之間產生鬆動情形，具有延長該馬達轉子1、設有該馬達轉子1之馬達或包含該馬達之風扇的使用壽命功效。 In summary, the motor rotor 1 of the embodiment of the present invention is provided with a recessed portion 121 in the hub 12, and the inner diameter R1 of the recessed portion 121 is smaller than the first end portion of the rotating shaft 11 The outer diameter R2 of the 111 can close the joint portion of the outer peripheral surface 113 of the rotating shaft 11 and the hub 12, thereby ensuring that the oil body in the oil-impregnated bearing 22 does not leak out to the outside of the motor rotor 1 via the joint portion. The motor rotor 1 of the embodiment of the present invention can be avoided by the fact that the oil body in the oil-impregnated bearing of the conventional motor rotor 9 may ooze out to the outside of the motor rotor 9 via the joint portion of the outer peripheral surface of the end portion 911 and the hub 92. The oil leakage causes fouling or prevents looseness between the rotating shaft 11 and the hub 12, and has the effect of extending the service life of the motor rotor 1, the motor provided with the motor rotor 1, or the fan including the motor.
雖然本發明已利用上述較佳實施例揭示，然其並非用以限定本發明，任何熟習此技藝者在不脫離本發明之精神和範圍之內，相對上述實施例進行各種更動與修改仍屬本發明所保護之技術範疇，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 While the invention has been described in connection with the preferred embodiments described above, it is not intended to limit the scope of the invention. The technical scope of the invention is protected, and therefore the scope of the invention is defined by the scope of the appended claims.
1‧‧‧馬達轉子 1‧‧‧Motor rotor
11‧‧‧轉軸 11‧‧‧ shaft
111‧‧‧第一端部 111‧‧‧First end
112‧‧‧第二端部 112‧‧‧ second end
113‧‧‧外周面 113‧‧‧ outer perimeter
114‧‧‧壓花槽 114‧‧‧ embossing trough
12‧‧‧輪轂 12‧‧·wheels
121‧‧‧凹陷部 121‧‧‧Depression
122‧‧‧外表面 122‧‧‧ outer surface
123‧‧‧內表面 123‧‧‧ inner surface
124‧‧‧永久磁鐵組 124‧‧‧Permanent magnet set
2‧‧‧定子 2‧‧‧stator
21‧‧‧基座 21‧‧‧Base
211‧‧‧軸管 211‧‧‧ shaft tube
22‧‧‧含油軸承 22‧‧‧ Oil bearing
23‧‧‧鐵芯 23‧‧‧ iron core
24‧‧‧線圈組 24‧‧‧ coil set
X‧‧‧軸向 X‧‧‧ axial
Y‧‧‧徑向 Y‧‧‧ radial
A‧‧‧第一距離 A‧‧‧first distance
B‧‧‧第二距離 B‧‧‧Second distance
C‧‧‧最大距離 C‧‧‧Maximum distance
Claims (8)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105123937A TWI602384B (en) | 2016-07-28 | 2016-07-28 | Motor, fan and rotor thereof |
| CN201610652197.6A CN107666190A (en) | 2016-07-28 | 2016-08-11 | Motor, fan and rotor thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW105123937A TWI602384B (en) | 2016-07-28 | 2016-07-28 | Motor, fan and rotor thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TWI602384B true TWI602384B (en) | 2017-10-11 |
| TW201804713A TW201804713A (en) | 2018-02-01 |
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| TW105123937A TWI602384B (en) | 2016-07-28 | 2016-07-28 | Motor, fan and rotor thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107666190A (en) |
| TW (1) | TWI602384B (en) |
Families Citing this family (5)
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|---|---|---|---|---|
| TWI657646B (en) * | 2018-02-09 | 2019-04-21 | 華碩電腦股份有限公司 | Heat dissipation apparatus |
| TWI689155B (en) * | 2018-12-17 | 2020-03-21 | 建準電機工業股份有限公司 | Outer-rotor motor |
| CN111577628A (en) * | 2019-02-19 | 2020-08-25 | 金士盾科技股份有限公司 | Air convection station using shaftless fan |
| TWI730417B (en) * | 2019-09-19 | 2021-06-11 | 建準電機工業股份有限公司 | Impeller and cooling fan including the impeller |
| CN113339287B (en) * | 2021-05-31 | 2022-06-10 | 势加透博（北京）科技有限公司 | Turbo compressor |
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| TWM351273U (en) * | 2008-08-11 | 2009-02-21 | Adda Corp | Fan structure |
| TW200944112A (en) * | 2008-04-11 | 2009-10-16 | Forcecon Technology Co Ltd | A lubricant retention structure for a cooling fan |
| US20130136632A1 (en) * | 2011-11-25 | 2013-05-30 | Hunter Pacific International Pty Ltd | Mounting assembly for an electric fan |
| TW201345112A (en) * | 2012-04-25 | 2013-11-01 | Sunonwealth Electr Mach Ind Co | Motor |
| CN205207226U (en) * | 2015-12-08 | 2016-05-04 | 东莞市晋锋五金制品有限公司 | Brushless fan of leak protection oil direct current |
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| CN201286044Y (en) * | 2008-10-06 | 2009-08-05 | 建准电机工业股份有限公司 | Oil leakage preventing structure for motor axis tube |
| CN201438656U (en) * | 2009-05-26 | 2010-04-14 | 建准电机工业股份有限公司 | Motor, fan and stator device thereof |
| CN103051083B (en) * | 2011-10-12 | 2015-12-30 | 建准电机工业股份有限公司 | Motor rotor |
| TWI472289B (en) * | 2011-11-01 | 2015-02-01 | Sunonwealth Electr Mach Ind Co | Motor |
| JP2014137088A (en) * | 2013-01-16 | 2014-07-28 | Nippon Densan Corp | Bearing device, motor, and blower fan |
| CN104141620B (en) * | 2013-05-10 | 2016-08-03 | 建准电机工业股份有限公司 | A kind of axial cooling fan and motor dimension selecting method thereof |
| TWI583870B (en) * | 2015-08-25 | 2017-05-21 | 建準電機工業股份有限公司 | Cooling fan with a coil substrate |
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- 2016-07-28 TW TW105123937A patent/TWI602384B/en active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200944112A (en) * | 2008-04-11 | 2009-10-16 | Forcecon Technology Co Ltd | A lubricant retention structure for a cooling fan |
| TWM351273U (en) * | 2008-08-11 | 2009-02-21 | Adda Corp | Fan structure |
| US20130136632A1 (en) * | 2011-11-25 | 2013-05-30 | Hunter Pacific International Pty Ltd | Mounting assembly for an electric fan |
| TW201345112A (en) * | 2012-04-25 | 2013-11-01 | Sunonwealth Electr Mach Ind Co | Motor |
| CN205207226U (en) * | 2015-12-08 | 2016-05-04 | 东莞市晋锋五金制品有限公司 | Brushless fan of leak protection oil direct current |
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| CN107666190A (en) | 2018-02-06 |
| TW201804713A (en) | 2018-02-01 |
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