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TWI553233B - Fan - Google Patents

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Publication number
TWI553233B
TWI553233B TW103136925A TW103136925A TWI553233B TW I553233 B TWI553233 B TW I553233B TW 103136925 A TW103136925 A TW 103136925A TW 103136925 A TW103136925 A TW 103136925A TW I553233 B TWI553233 B TW I553233B
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TW
Taiwan
Prior art keywords
bearing
center
fan
groove
rotor
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TW103136925A
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Chinese (zh)
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TW201600729A (en
Inventor
孫巧云
戴宇凱
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鴻準精密工業股份有限公司
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Publication of TW201600729A publication Critical patent/TW201600729A/en
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Publication of TWI553233B publication Critical patent/TWI553233B/en

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Description

風扇 fan

本發明涉及一種風扇,特別是一種用於對電子元件散熱的風扇。 The present invention relates to a fan, and more particularly to a fan for dissipating heat from electronic components.

傳統的風扇包括一定子及一轉子。定子包括一中心柱。該中心柱中央開設一圓柱狀槽,墊片、軸承及軸承蓋收容於中心柱的槽內。軸承一端外徑較另一端小,從而在外側形成凹陷使軸承與中心柱之間形成一儲存潤滑油的空間。該轉子包括一轉軸及複數扇葉。該轉軸的一端插設於軸承的中心孔內。墊片貼設在中心柱的槽的底面,用以防止風扇運轉時轉軸與中心柱間產生磨擦引起的異音。軸承用來支撐轉軸。軸承蓋蓋設在中心柱的開口處且環繞轉軸,用以防止風扇運轉時潤滑油從中心柱內被甩出。 A conventional fan includes a stator and a rotor. The stator includes a center post. A cylindrical groove is formed in the center of the center column, and the gasket, the bearing and the bearing cover are received in the groove of the center column. The outer diameter of one end of the bearing is smaller than the other end, so that a recess is formed on the outer side to form a space for storing lubricating oil between the bearing and the center post. The rotor includes a rotating shaft and a plurality of blades. One end of the shaft is inserted into the center hole of the bearing. The gasket is attached to the bottom surface of the groove of the center column to prevent abnormal noise caused by friction between the rotating shaft and the center column when the fan is running. The bearing is used to support the shaft. The bearing cap is placed at the opening of the center post and surrounds the shaft to prevent the lubricating oil from being thrown out of the center column while the fan is running.

然而隨著風扇向輕薄化方向發展,目前市場上常見的應用於筆記型電腦內的風扇的厚度在4毫米(mm)左右,去除墊片的厚度及軸承蓋的厚度,軸承與轉軸相配合的距離僅3mm左右。該種長度的軸承無法做成兩端外徑不一致,使得軸承與中心柱之間幾乎無儲存潤滑油的空間,軸承與轉軸之間在運轉時消耗的潤滑油幾乎無法得到補充,導致扇葉運轉偏擺較大,容易產生旋轉異音,明顯縮減了風扇的壽命。 However, as the fan is moving toward thinner and lighter, the thickness of the fan commonly used in notebook computers on the market is about 4 mm (mm), the thickness of the spacer and the thickness of the bearing cap are removed, and the bearing is matched with the rotating shaft. The distance is only about 3mm. The bearing of this length cannot be made inconsistent in the outer diameter of the two ends, so that there is almost no space for storing lubricating oil between the bearing and the center column, and the lubricating oil consumed between the bearing and the rotating shaft can hardly be replenished, resulting in fan blade operation. The yaw is large, and it is easy to produce a rotating abnormal sound, which significantly reduces the life of the fan.

有鑑於此,有必要提供一種風扇,其不但能滿足輕薄化的設計, 同時也具有較大的儲存潤滑油空間。 In view of this, it is necessary to provide a fan that not only meets the slim design, but also At the same time, it also has a large storage space for lubricating oil.

一種風扇,包括一定子及一轉子,該轉子包括一葉輪及固定在葉輪上的一轉軸,該定子包括一中心柱及收容於該中心柱內的一軸承,所述轉軸插設於該軸承中央的軸孔中,該中心柱開設一柱狀槽,該槽的側面沿徑向向內凸伸形成多個相間隔的臺階部,每相鄰的兩個臺階部之間形成一用於存儲潤滑油的儲油槽,該軸承與該中心柱的臺階部相抵靠。 A fan includes a stator and a rotor. The rotor includes an impeller and a rotating shaft fixed to the impeller. The stator includes a center column and a bearing received in the center column. The rotating shaft is inserted in the center of the bearing. In the shaft hole, the center column defines a cylindrical groove, and the side surface of the groove protrudes radially inward to form a plurality of spaced step portions, and a lubrication is formed between each adjacent two step portions for storing lubrication. An oil reservoir of the oil, the bearing abutting against the stepped portion of the center post.

在本發明的風扇中,由於中心柱的柱狀槽內形成多個相間隔的臺階部,每相鄰的兩個臺階部之間形成一用於存儲潤滑油的儲油槽,使中心柱內潤滑油的儲存量增加,軸承與轉軸之間在運轉時消耗的潤滑油可以及時得到補充,風扇的壽命可滿足設計要求。 In the fan of the present invention, since a plurality of spaced step portions are formed in the columnar groove of the center column, an oil reservoir for storing lubricating oil is formed between each adjacent two step portions to lubricate the center column. The oil storage capacity is increased, and the lubricating oil consumed between the bearing and the rotating shaft can be replenished in time, and the life of the fan can meet the design requirements.

100、100a‧‧‧風扇 100, 100a‧‧‧ fans

10、10a‧‧‧定子 10, 10a‧‧‧ Stator

12、12a‧‧‧定子鐵心 12, 12a‧‧‧ Stator core

122‧‧‧貫穿孔 122‧‧‧through holes

124‧‧‧線圈 124‧‧‧ coil

126‧‧‧凹孔 126‧‧‧ recessed hole

14、14a‧‧‧中心柱 14, 14a‧‧‧ center column

140、140a‧‧‧第一儲油槽 140, 140a‧‧‧ first oil storage tank

141、141a‧‧‧第一臺階部 141, 141a‧‧‧ first step

142、142a‧‧‧槽 142, 142a‧‧‧ slots

143、143a‧‧‧第二臺階部 143, 143a‧‧‧ second step

144‧‧‧凸緣 144‧‧‧Flange

145、145a‧‧‧第二儲油槽 145, 145a‧‧‧ second oil storage tank

146‧‧‧凸柱 146‧‧‧Bump

147、147a‧‧‧第三儲油槽 147, 147a‧‧‧ third oil storage tank

16、16a‧‧‧驅動電路板 16, 16a‧‧‧ drive circuit board

162‧‧‧通孔 162‧‧‧through hole

164‧‧‧定位孔 164‧‧‧Positioning holes

17、17a‧‧‧軸承蓋 17, 17a‧‧‧ bearing cap

172‧‧‧中心孔 172‧‧‧ center hole

18、18a‧‧‧軸承 18, 18a‧‧‧ bearing

182‧‧‧軸孔 182‧‧‧Axis hole

184‧‧‧導流槽 184‧‧ ‧ guide trough

19‧‧‧墊片 19‧‧‧shims

20、20a‧‧‧轉子 20, 20a‧‧‧ rotor

22‧‧‧葉輪 22‧‧‧ Impeller

222‧‧‧輪轂 222‧‧ wheels

223‧‧‧頂壁 223‧‧‧ top wall

224‧‧‧圓盤 224‧‧‧ disc

225‧‧‧側壁 225‧‧‧ side wall

226‧‧‧扇葉 226‧‧‧ fan leaves

228‧‧‧通風孔 228‧‧‧ventilation holes

24、24a‧‧‧轉軸 24, 24a‧‧‧ shaft

26‧‧‧磁體 26‧‧‧ magnet

30、30a‧‧‧外框 30, 30a‧‧‧ frame

32‧‧‧底板 32‧‧‧floor

320‧‧‧進風口 320‧‧‧Air inlet

322‧‧‧定位柱 322‧‧‧Positioning column

34‧‧‧側板 34‧‧‧ side panels

340‧‧‧出風口 340‧‧‧air outlet

342‧‧‧固定部 342‧‧‧ fixed department

圖1為本發明風扇第一實施例的組裝圖。 1 is an assembled view of a first embodiment of a fan of the present invention.

圖2為圖1中的風扇的分解圖。 Figure 2 is an exploded view of the fan of Figure 1.

圖3為圖2中的風扇的局部放大圖。 Figure 3 is a partial enlarged view of the fan of Figure 2.

圖4為圖1中的風扇沿著IV-IV線的剖視圖。 Figure 4 is a cross-sectional view of the fan of Figure 1 taken along line IV-IV.

圖5為本發明風扇第二實施例的組裝圖。 Figure 5 is an assembled view of a second embodiment of the fan of the present invention.

圖6為圖5中的風扇的局部放大圖。 Figure 6 is a partial enlarged view of the fan of Figure 5.

圖7為圖5中的風扇沿著VII-VII線的剖視圖。 Figure 7 is a cross-sectional view of the fan of Figure 5 taken along line VII-VII.

請參閱圖1至圖3,本發明第一實施例的用來對發熱電子元件散熱的風扇100,包括一定子10、一轉子20及一外框30。該定子10和 該轉子20收容於該外框30內。在本實施例中,該風扇100為一用於筆記型電腦的離心式風扇。 Referring to FIG. 1 to FIG. 3, a fan 100 for dissipating heat from a heat-generating electronic component according to a first embodiment of the present invention includes a stator 10, a rotor 20, and an outer frame 30. The stator 10 and The rotor 20 is housed in the outer frame 30. In this embodiment, the fan 100 is a centrifugal fan for a notebook computer.

該定子10包括一定子鐵心12、一中心柱14、一驅動電路板16、一軸承蓋17、一軸承18及一墊片19。該墊片19、軸承18及軸承蓋17收容於中心柱14內。 The stator 10 includes a stator core 12, a center pillar 14, a drive circuit board 16, a bearing cover 17, a bearing 18, and a gasket 19. The spacer 19, the bearing 18, and the bearing cap 17 are housed in the center post 14.

該定子鐵心12由複數矽鋼片堆疊而成。該定子鐵心12上纏繞金屬線圈124。該定子鐵心12中央開設一貫穿孔122,在該貫穿孔122的圓周處徑向向外凹陷形成一凹孔126。 The stator core 12 is formed by stacking a plurality of silicon steel sheets. A metal coil 124 is wound around the stator core 12. A permanent through hole 122 is defined in the center of the stator core 12, and a recessed hole 126 is formed radially outward at a circumference of the through hole 122.

該驅動電路板16藉由導線與該定子鐵心12上的金屬線圈124連接,以對線圈124供電、驅動轉子20轉動。該驅動電路板16中央開設一圓形通孔162,並在該通孔162周圍開設二定位孔164。 The drive circuit board 16 is connected to the metal coil 124 on the stator core 12 by wires to supply power to the coil 124 and drive the rotor 20 to rotate. A circular through hole 162 is defined in the center of the driving circuit board 16 , and two positioning holes 164 are defined around the through hole 162 .

所述墊片19呈圓形,由金屬材料製成,用以防止風扇100運轉時轉軸24與中心柱14間產生磨擦引起的異音。 The spacer 19 has a circular shape and is made of a metal material for preventing an abnormal noise caused by friction between the rotating shaft 24 and the center post 14 when the fan 100 is operated.

該軸承18呈圓柱狀,其中央開設一軸孔182。該軸承18收容於該中心柱14內。該軸承18開設多個引導潤滑油流動的導流槽184。每個導流槽184依次延伸經過該軸承18的頂面、外側面及底面,且與軸承18的軸孔182相連通。 The bearing 18 has a cylindrical shape with a shaft hole 182 formed in the center thereof. The bearing 18 is received within the center post 14. The bearing 18 defines a plurality of flow guiding grooves 184 for guiding the flow of lubricating oil. Each of the flow guiding grooves 184 extends through the top surface, the outer side surface, and the bottom surface of the bearing 18 in sequence, and communicates with the shaft hole 182 of the bearing 18.

該軸承蓋17呈環形,蓋設在該中心柱14的開口處,用以防止風扇100運轉時潤滑油從中心柱14內被甩出。該軸承蓋17中央開設一中心孔172。 The bearing cap 17 is annular and is disposed at the opening of the center post 14 to prevent the lubricating oil from being thrown out of the center post 14 when the fan 100 is in operation. A central hole 172 is defined in the center of the bearing cover 17.

該中心柱14採用塑膠材料射出成型。用於該中心柱14的塑膠材料為PBT(聚對苯二甲酸丁二醇酯)。該中心柱14頂部外周處徑向向外凸伸形成一凸柱146。該中心柱14底部外周徑向向外延伸形 成一環形凸緣144。該中心柱14的凸緣144的直徑大於定子鐵心12的貫穿孔122的直徑。該中心柱14頂部穿過定子鐵心12的貫穿孔122,該中心柱14的凸柱146收容於該定子鐵心12的凹孔126內,以限制定子鐵心12相對於中心柱14沿周向轉動。中心柱14的凸緣144抵靠定子鐵心12。 The center post 14 is injection molded from a plastic material. The plastic material used for the center column 14 is PBT (polybutylene terephthalate). A protrusion 146 is formed radially outwardly at the outer periphery of the top of the center pillar 14. The bottom of the center pillar 14 extends radially outwardly An annular flange 144 is formed. The diameter of the flange 144 of the center post 14 is larger than the diameter of the through hole 122 of the stator core 12. The top of the center pillar 14 passes through the through hole 122 of the stator core 12, and the pillar 146 of the center pillar 14 is received in the recessed hole 126 of the stator core 12 to restrict the stator core 12 from rotating circumferentially relative to the center pillar 14. The flange 144 of the center post 14 abuts against the stator core 12.

該中心柱14中央開設一圓柱狀槽142。所述墊片19設置在該中心柱14的槽142底面的中央。該墊片19的直徑小於該中心柱14的槽142的直徑。該中心柱14的槽142的側面沿徑向向內延伸形成三個扇形第一臺階部141。該三個扇形第一臺階部141圍繞在該墊片19的周圍。第一臺階部141之間彼此等距間隔。每一扇形第一臺階部141的弧形末端抵靠該墊片19的邊緣。每相鄰的兩個第一臺階部141之間形成一用於存儲潤滑油的扇形的第一儲油槽140。各第一儲油槽140彼此等距間隔,且圍繞在該墊片19的周圍。每一第一臺階部141的高度等於或略大於所述墊片19在槽142內的高度。該軸承18的底面與該中心柱14的第一臺階部141的頂面抵靠。 A cylindrical groove 142 is defined in the center of the center column 14. The spacer 19 is disposed at the center of the bottom surface of the groove 142 of the center post 14. The diameter of the spacer 19 is smaller than the diameter of the groove 142 of the center post 14. The side surface of the groove 142 of the center post 14 extends radially inward to form three sector-shaped first step portions 141. The three sector-shaped first step portions 141 surround the spacer 19. The first step portions 141 are equally spaced from each other. The curved end of each sector-shaped first step portion 141 abuts against the edge of the spacer 19. A fan-shaped first oil reservoir 140 for storing lubricating oil is formed between each adjacent two first step portions 141. Each of the first oil reservoirs 140 is equally spaced from each other and surrounds the gasket 19. The height of each of the first step portions 141 is equal to or slightly larger than the height of the spacer 19 within the groove 142. The bottom surface of the bearing 18 abuts against the top surface of the first step portion 141 of the center post 14.

該中心柱14的槽142的側面沿徑向向內凸伸形成三個弧形的第二臺階部143。該三個弧形第二臺階部143彼此等距間隔,且圍繞在該軸承18周圍。該中心柱14的第二臺階部143的側面抵靠該軸承18的側面。每相鄰的兩個第二臺階部143之間形成一用於存儲潤滑油的弧形的第二儲油槽145。各第二儲油槽145彼此等距間隔,且圍繞在該軸承18的周圍。每一第二臺階部143的高度與該軸承18在槽142內的高度相等,且小於該中心柱14的高度。該軸承蓋17抵靠在該第二臺階部143及該軸承18的頂部。 The side surface of the groove 142 of the center post 14 projects radially inward to form three arcuate second step portions 143. The three curved second step portions 143 are equidistantly spaced from each other and surround the bearing 18. The side of the second step portion 143 of the center post 14 abuts against the side of the bearing 18. An arcuate second oil reservoir 145 for storing lubricating oil is formed between each adjacent two second step portions 143. Each of the second oil reservoirs 145 is equally spaced from each other and surrounds the bearing 18. The height of each second step portion 143 is equal to the height of the bearing 18 within the slot 142 and is less than the height of the center post 14. The bearing cap 17 abuts against the second step portion 143 and the top of the bearing 18.

請同時參閱圖4,該轉子20包括一葉輪22、一轉軸24及一磁體26 。 Referring to FIG. 4 at the same time, the rotor 20 includes an impeller 22, a rotating shaft 24 and a magnet 26 . .

該葉輪22包括一輪轂222、環設於該輪轂222外周緣的一環形的圓盤224及設於該圓盤224上下兩側並沿圓盤224外周發散排列的複數扇葉226。該輪轂222罩設於所述定子鐵心12的外圍,其包括一圓形的頂壁223及由該頂壁223的周緣向下延伸形成的一環形側壁225。該圓盤224開設多個環繞該輪轂222的通風孔228。 The impeller 22 includes a hub 222, an annular disk 224 disposed on the outer periphery of the hub 222, and a plurality of blades 226 disposed on the upper and lower sides of the disk 224 and arranged along the outer circumference of the disk 224. The hub 222 is disposed on the periphery of the stator core 12 and includes a circular top wall 223 and an annular sidewall 225 extending downward from a periphery of the top wall 223. The disc 224 defines a plurality of venting holes 228 that surround the hub 222.

該轉軸24的一端固定在所述輪轂222的頂壁223的中央處。該轉軸24的另一端穿過該軸承蓋17的中心孔172後,插設於該軸承18的軸孔182中,從而將轉子20可旋轉地安裝於定子10上。 One end of the rotating shaft 24 is fixed at the center of the top wall 223 of the hub 222. The other end of the rotating shaft 24 passes through the center hole 172 of the bearing cover 17, and is inserted into the shaft hole 182 of the bearing 18, thereby rotatably mounting the rotor 20 on the stator 10.

所述磁體26貼附於輪轂222的側壁225的內表面上。 The magnet 26 is attached to the inner surface of the side wall 225 of the hub 222.

所述外框30包括一底板32及沿該底板32外緣向上延伸的一側板34。所述中心柱14固定在該外框30的底板32中央處。該外框30的底板32在該中心柱14的外圍向上凸伸形成二定位柱322。該驅動電路板16貼設在該外框30的底板32上,並藉由其圓形通孔162套設在該中心柱14的環形凸緣144周圍,該外框30的底板32的定位柱322收容於該驅動電路板16的定位孔164內,以限制該驅動電路板16相對於中心柱14沿周向轉動。該底板32開設圍繞該中心柱14的三間隔的進風口320。該側板34開設一側向的出風口340。該側板34周圍凸伸出二固定部342,用於固定安裝該外框30。 The outer frame 30 includes a bottom plate 32 and a side plate 34 extending upward along the outer edge of the bottom plate 32. The center post 14 is fixed at the center of the bottom plate 32 of the outer frame 30. The bottom plate 32 of the outer frame 30 protrudes upward from the periphery of the center pillar 14 to form two positioning posts 322. The driving circuit board 16 is attached to the bottom plate 32 of the outer frame 30, and is sleeved around the annular flange 144 of the center pillar 14 by a circular through hole 162. The positioning pillar of the bottom plate 32 of the outer frame 30 The 322 is received in the positioning hole 164 of the driving circuit board 16 to restrict the driving circuit board 16 from rotating in the circumferential direction with respect to the center pillar 14. The bottom plate 32 defines three spaced air inlets 320 around the center post 14. The side plate 34 has a side air outlet 340. The side plate 34 protrudes from the two fixing portions 342 for fixing the outer frame 30.

請參閱圖5至圖7,為本發明第二實施例的用來對發熱電子元件散熱的風扇100a,其包括一定子10a、一轉子20a及一外框30a。該定子10a包括一定子鐵心12a、一中心柱14a、一驅動電路板16a、一軸承蓋17a及一軸承18a。該軸承18a及軸承蓋17a收容於中心柱 14a內。 Referring to FIG. 5 to FIG. 7, a fan 100a for dissipating heat from a heat-generating electronic component according to a second embodiment of the present invention includes a stator 10a, a rotor 20a, and an outer frame 30a. The stator 10a includes a stator core 12a, a center pillar 14a, a drive circuit board 16a, a bearing cover 17a, and a bearing 18a. The bearing 18a and the bearing cover 17a are received in the center column Within 14a.

第二實施例的風扇100a中的轉子20a和外框30a的結構分別與第一實施例的風扇100中的轉子20和外框30的結構相同。第二實施例的風扇100a中的定子鐵心12a、驅動電路板16a、軸承蓋17a及軸承18a分別與第一實施例的風扇100中的定子鐵心12、驅動電路板16、軸承蓋17及軸承18的結構相同。第二實施例的風扇100a與第一實施例的風扇100的區別僅在於:1.第二實施例中的風扇100a的定子10a不包括墊片;2.第二實施例中的風扇100a的中心柱14a的製成材料不同於第二實施例中的風扇100的中心柱14的製成材料,用於該中心柱14a的塑膠材料為POM(聚甲醛樹脂)。POM材料具有如下特性:1.機械特性優良、力學性能和剛性好、表面硬度高而且表面緻密、特性接近金屬;2.自潤滑性良好、耐摩性良好;3.耐油性良好。當然可以理解,其他具有耐磨耐油等性質的材料亦可用於製造該中心柱14a。 The structure of the rotor 20a and the outer frame 30a in the fan 100a of the second embodiment is the same as that of the rotor 20 and the outer frame 30 in the fan 100 of the first embodiment, respectively. The stator core 12a, the drive circuit board 16a, the bearing cover 17a, and the bearing 18a in the fan 100a of the second embodiment are respectively coupled to the stator core 12, the drive circuit board 16, the bearing cover 17, and the bearing 18 in the fan 100 of the first embodiment. The structure is the same. The fan 100a of the second embodiment is different from the fan 100 of the first embodiment only in that: 1. The stator 10a of the fan 100a in the second embodiment does not include a spacer; 2. The center of the fan 100a in the second embodiment The material of the column 14a is different from that of the center column 14 of the fan 100 in the second embodiment, and the plastic material for the center column 14a is POM (polyacetal resin). POM material has the following characteristics: 1. Excellent mechanical properties, good mechanical properties and rigidity, high surface hardness and dense surface, and close to metal; 2. Good self-lubricating property and good abrasion resistance; 3. Good oil resistance. It will of course be understood that other materials having properties such as abrasion resistance and oil resistance can also be used to manufacture the center post 14a.

該中心柱14a中央開設一圓柱狀槽142a。該中心柱14a的槽142a的側面沿徑向向內延伸形成三個扇形第一臺階部141a。該軸承18a的底面與該中心柱14a的第一臺階部141a的頂面抵靠。該轉子20a的轉軸24a穿過軸承18a直接與該中心柱14a的槽142a的底面相抵靠。該三個扇形第一臺階部141a圍繞在該轉子20a的轉軸24a周圍,且彼此等距間隔。每相鄰的兩個第一臺階部141a之間形成一用於存儲潤滑油的扇形的第一儲油槽140a。各第一儲油槽140a圍繞在該轉子20a的轉軸24a周圍,且彼此等距間隔。各扇形第一臺階部141a的弧形末端邊緣位於同一個圓內,與該轉子20a的轉軸24a之間形成一用於存儲潤滑油的環形第三儲油槽147a。 A cylindrical groove 142a is defined in the center of the center column 14a. The side surface of the groove 142a of the center post 14a extends radially inward to form three sector-shaped first step portions 141a. The bottom surface of the bearing 18a abuts against the top surface of the first step portion 141a of the center post 14a. The rotating shaft 24a of the rotor 20a directly abuts against the bottom surface of the groove 142a of the center post 14a through the bearing 18a. The three sector-shaped first step portions 141a surround the rotating shaft 24a of the rotor 20a and are equally spaced from each other. A fan-shaped first oil reservoir 140a for storing lubricating oil is formed between each adjacent two first step portions 141a. Each of the first oil reservoirs 140a surrounds the rotating shaft 24a of the rotor 20a and is equally spaced from each other. An arcuate end edge of each of the sector-shaped first step portions 141a is located in the same circle, and an annular third oil reservoir 147a for storing lubricating oil is formed between the rotating shaft 24a of the rotor 20a.

該中心柱14a的槽142a的側面沿徑向向內凸伸形成三個弧形的第二臺階部143a。該三個弧形第二臺階部143a圍繞在該軸承18a周圍,且彼此等距間隔。該中心柱14a的第二臺階部143a的側面抵靠該軸承18a的側面。每相鄰的兩個第二臺階部143a之間形成一用於存儲潤滑油的弧形的第二儲油槽145a。各第二儲油槽145a圍繞在該軸承18a的周圍,且彼此等距間隔。每一第二臺階部143a的高度與該軸承18a在槽142a內的高度相等,且小於該中心柱14a的高度。該軸承蓋17a抵靠在該第二臺階部143a及該軸承18a的頂部。 The side surface of the groove 142a of the center post 14a protrudes radially inward to form three arcuate second step portions 143a. The three curved second step portions 143a surround the bearing 18a and are equally spaced from each other. The side surface of the second step portion 143a of the center post 14a abuts against the side surface of the bearing 18a. An arcuate second oil reservoir 145a for storing lubricating oil is formed between each adjacent two second step portions 143a. Each of the second oil reservoirs 145a surrounds the bearing 18a and is equally spaced from each other. The height of each of the second step portions 143a is equal to the height of the bearing 18a in the groove 142a and smaller than the height of the center post 14a. The bearing cap 17a abuts against the second step portion 143a and the top of the bearing 18a.

在本發明的風扇中,由於中心柱的柱狀槽內形成多個相間隔的臺階部,每相鄰的兩個臺階部之間形成一用於存儲潤滑油的儲油槽,使中心柱內潤滑油的儲存量增加,軸承與轉軸之間在運轉時消耗的潤滑油可以及時得到補充,風扇的壽命可滿足設計要求。 In the fan of the present invention, since a plurality of spaced step portions are formed in the columnar groove of the center column, an oil reservoir for storing lubricating oil is formed between each adjacent two step portions to lubricate the center column. The oil storage capacity is increased, and the lubricating oil consumed between the bearing and the rotating shaft can be replenished in time, and the life of the fan can meet the design requirements.

可以理解的是,對於本領域具有通常知識者來說,可以根據本發明的技術構思做出其他各種相應的改變與變形,而所有這些改變與變形都應屬於本發明的保護範圍。 It is to be understood that a person skilled in the art can make various other changes and modifications in accordance with the technical concept of the present invention, and all such changes and modifications are intended to fall within the scope of the present invention.

14‧‧‧中心柱 14‧‧‧ center column

140‧‧‧第一儲油槽 140‧‧‧First oil storage tank

141‧‧‧第一臺階部 141‧‧‧ first step

142‧‧‧槽 142‧‧‧ slot

143‧‧‧第二臺階部 143‧‧‧second step

144‧‧‧凸緣 144‧‧‧Flange

145‧‧‧第二儲油槽 145‧‧‧Second oil storage tank

146‧‧‧凸柱 146‧‧‧Bump

19‧‧‧墊片 19‧‧‧shims

32‧‧‧底板 32‧‧‧floor

322‧‧‧定位柱 322‧‧‧Positioning column

Claims (8)

一種風扇,包括一定子及一轉子,該轉子包括一葉輪及固定在葉輪上的一轉軸,該定子包括一中心柱及收容於該中心柱內的一軸承,所述轉軸插設於該軸承中央的軸孔中,其改良在於:該中心柱開設一柱狀槽,該槽的側面沿徑向向內凸伸形成多個相間隔的臺階部,每相鄰的兩個臺階部之間形成一用於存儲潤滑油的儲油槽,該軸承與該中心柱的臺階部相抵靠,所述定子還包括收容於該中心柱的槽內的一墊片,所述墊片設置在該中心柱的槽的底面的中央,該墊片的直徑小於該中心柱的槽的直徑,各臺階部圍繞在該墊片周圍,該軸承的底面抵靠在該中心柱的臺階部的頂面,各臺階部彼此等距間隔,各儲油槽圍繞在該墊片的周圍,且彼此等距間隔。 A fan includes a stator and a rotor. The rotor includes an impeller and a rotating shaft fixed to the impeller. The stator includes a center column and a bearing received in the center column. The rotating shaft is inserted in the center of the bearing. The improvement of the shaft hole is that the central column defines a cylindrical groove, and the side surface of the groove protrudes radially inward to form a plurality of spaced step portions, and a gap is formed between each adjacent two step portions. An oil storage tank for storing lubricating oil, the bearing abutting against a step portion of the center pillar, the stator further comprising a gasket received in the groove of the center pillar, the gasket being disposed in the groove of the center pillar The center of the bottom surface, the diameter of the spacer is smaller than the diameter of the groove of the center post, each step portion surrounds the gasket, and the bottom surface of the bearing abuts against the top surface of the step portion of the center pillar, and the step portions are mutually At equal intervals, each oil reservoir surrounds the gasket and is equally spaced from each other. 如申請專利範圍第1項所述的風扇,其中:每一臺階部的末端抵靠該墊片的邊緣。 A fan according to claim 1, wherein the end of each step abuts against the edge of the spacer. 如申請專利範圍第1項所述的風扇,其中:各臺階部圍繞在該軸承周圍,該軸承的側面與該中心柱的臺階部相抵靠。 A fan according to claim 1, wherein each step surrounds the bearing, and a side of the bearing abuts against a step of the center post. 如申請專利範圍第3項所述的風扇,其中:各臺階部彼此等距間隔,各儲油槽圍繞在該軸承周圍,且彼此等距間隔。 A fan according to claim 3, wherein each of the step portions is equidistantly spaced from each other, and each of the oil reservoirs surrounds the bearing and is equally spaced from each other. 如申請專利範圍第3項所述的風扇,其中:所述定子還包括蓋設在該中心柱的開口處的一軸承蓋,該軸承蓋抵靠該臺階部及該軸承的頂部。 The fan of claim 3, wherein the stator further comprises a bearing cap that is disposed at an opening of the center post, the bearing cap abutting the step and the top of the bearing. 如申請專利範圍第1項所述的風扇,其中:該中心柱的材料為聚甲醛樹脂。 The fan of claim 1, wherein the material of the center column is a polyacetal resin. 如申請專利範圍第1項所述的風扇,其中:該轉子的轉軸穿過軸承直接與該中心柱的槽的底面相抵靠,各臺階部圍繞在該轉子的轉軸周圍,該軸 承的底面抵靠在該中心柱的臺階部的頂面。 The fan of claim 1, wherein: the rotating shaft of the rotor passes through the bearing directly against the bottom surface of the groove of the center post, and each step surrounds a rotating shaft of the rotor, the shaft The bottom surface of the bearing bears against the top surface of the step portion of the center pillar. 如申請專利範圍第1項所述的風扇,其中:各臺階部的末端邊緣位於同一個圓內,與該轉子的轉軸之間形成用於存儲潤滑油的環形另一儲油槽。 The fan of claim 1, wherein the end edges of the step portions are located in the same circle, and an annular oil reservoir for storing lubricating oil is formed between the rotating shaft of the rotor.
TW103136925A 2014-04-30 2014-10-24 Fan TWI553233B (en)

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