TW201813255A - Motor and dynamic pressure plate thereof - Google Patents

Motor and dynamic pressure plate thereof Download PDF

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Publication number
TW201813255A
TW201813255A TW105128299A TW105128299A TW201813255A TW 201813255 A TW201813255 A TW 201813255A TW 105128299 A TW105128299 A TW 105128299A TW 105128299 A TW105128299 A TW 105128299A TW 201813255 A TW201813255 A TW 201813255A
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dynamic pressure
plate
motor according
patent application
item
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TW105128299A
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Chinese (zh)
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TWI599150B (en
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洪銀樹
周文南
俞木凱
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昆山廣興電子有限公司
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Priority to TW105128299A priority Critical patent/TWI599150B/en
Priority to CN201610834547.0A priority patent/CN107800234B/en
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Publication of TW201813255A publication Critical patent/TW201813255A/en

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K5/00Casings; Enclosures; Supports
    • H02K5/04Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/16Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
    • H02K5/165Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotor around a fixed spindle; radially supporting the rotor directly

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Sliding-Contact Bearings (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

A motor and a dynamic pressure plate thereof are disclosed for improving the rotating-smoothness of prior motor. This motor includes a base, a rotor and a dynamic pressure plate. The base has a bearing sleeve with a bearing inside. The rotor has a shaft and a thrust plate, with the shaft connects with the bearing and the thrust plate is set at one end of the shaft. The dynamic pressure plate is set by one side of the bearing sleeve, with the dynamic pressure plate faces to the thrust plate, with the thrust plate is located between the bearing and the dynamic pressure plate, with the dynamic pressure plate has some dynamic pressure grooves on a surface facing to the thrust plate.

Description

馬達及其動壓板    Motor and its dynamic pressure plate   

本發明係關於一種馬達,尤其是一種設有動壓板的馬達。 The invention relates to a motor, in particular to a motor provided with a dynamic pressure plate.

請參照第1圖所示,係一種習知馬達9,包含一套筒91及一軸92。該軸92係伸入該套筒91中,且該軸92與該套筒91之間構成一徑向軸承部。藉此,該軸92能夠形成可旋轉地結合於該套筒91,使該軸92受到驅動時可以相對該套筒91樞轉。類似所述習知馬達9之一實施例,已揭露於中國公告第1249887號「主軸電動機及其組裝方法」專利案中。 Please refer to FIG. 1, which is a conventional motor 9 including a sleeve 91 and a shaft 92. The shaft 92 extends into the sleeve 91, and a radial bearing portion is formed between the shaft 92 and the sleeve 91. Thereby, the shaft 92 can be rotatably coupled to the sleeve 91, so that the shaft 92 can be pivoted relative to the sleeve 91 when being driven. An embodiment similar to the conventional motor 9 has been disclosed in the Chinese Patent No. 1249887 "Spindle Motor and Assembly Method" patent.

其中,該套筒91之一側設有一軸向推力板911,該軸92之一端結合一止推板921,該軸向推力板911與該止推板921構成沿軸向方向支撐該軸92的軸向推力軸承部。詳言之,油等潤滑流體可以填充於該軸向推力板911與該止推板921之間,使該軸向推力板911與該止推板921保持一間距,以降低該軸92的摩擦扭矩。然而,該軸向推力板911與該止推板921相對之表面均為平面,當該軸92承受壓力或是在轉動過程中產生震動時,該軸向推力板911與該止推板921之間的潤滑流體層厚度將會變薄,甚至產生該軸向推力板911與該止推板921直接接觸的情形。據此,該軸92的摩擦扭矩降低幅度有限。 One side of the sleeve 91 is provided with an axial thrust plate 911, and one end of the shaft 92 is combined with a thrust plate 921. The axial thrust plate 911 and the thrust plate 921 form an axial direction to support the shaft 92. Axial thrust bearing section. In detail, a lubricating fluid such as oil can be filled between the axial thrust plate 911 and the thrust plate 921 to maintain a distance between the axial thrust plate 911 and the thrust plate 921 to reduce the friction of the shaft 92 Torque. However, the opposite surfaces of the axial thrust plate 911 and the thrust plate 921 are flat. When the shaft 92 receives pressure or generates vibration during the rotation, the axial thrust plate 911 and the thrust plate 921 The thickness of the lubricating fluid layer in between will become thinner, and even the axial thrust plate 911 and the thrust plate 921 are in direct contact with each other. Accordingly, the reduction in the friction torque of the shaft 92 is limited.

有鑒於此,習知馬達9存在軸92無法順暢旋轉的問題,仍有加以改良之必要。 In view of this, the conventional motor 9 has a problem that the shaft 92 cannot rotate smoothly, and it is still necessary to improve it.

為解決上述問題,本發明提供一種馬達及其動壓板,該動壓板之表面設有數個動壓溝,以增加該動壓板與一止推板之間的潤滑流體層的有效厚度及支撐力。 In order to solve the above problems, the present invention provides a motor and a dynamic pressure plate thereof. The surface of the dynamic pressure plate is provided with a plurality of dynamic pressure grooves to increase the effective thickness and supporting force of the lubricating fluid layer between the dynamic pressure plate and a thrust plate.

為達到前述發明目的,本發明所運用之技術手段包含有:一種馬達,包含:一基座,設有一個軸承套,該軸承套內部設有一軸承;一轉子,該轉子包含一轉軸及一止推板,該轉軸結合於該軸承,該止推板設置於該轉軸的一端;及一動壓板,該動壓板設置於該軸承套之一側,且該動壓板朝向該止推板,該止推板位於該軸承與該動壓板之間,該動壓板朝向該止推板之一表面設有數個動壓溝。 In order to achieve the foregoing object of the invention, the technical means used in the present invention include: a motor including: a base provided with a bearing sleeve, the bearing sleeve is provided with a bearing inside; a rotor, the rotor includes a rotating shaft and a stop A thrust plate, the rotating shaft is coupled to the bearing, the thrust plate is disposed at one end of the rotating shaft; and a dynamic pressure plate, the dynamic pressure plate is disposed on one side of the bearing sleeve, and the dynamic pressure plate faces the thrust plate, the thrust A plate is located between the bearing and the dynamic pressure plate, and a plurality of dynamic pressure grooves are provided on one surface of the dynamic pressure plate facing the thrust plate.

其中,該動壓板中心設有一孔槽。藉此,該動壓板與該軸承之間形成供容置潤滑流體的一容置空間,該孔槽連通該容置空間,使該孔槽可作為一潤滑流體儲存槽。 A hole slot is provided in the center of the dynamic pressure plate. Thereby, a receiving space for receiving a lubricating fluid is formed between the dynamic pressure plate and the bearing, and the hole groove communicates with the receiving space, so that the hole groove can serve as a lubricating fluid storage groove.

其中,該轉軸設有該止推板的一端與該孔槽相鄰接。藉此,該容置空間所容置的潤滑流體除了可以潤滑該止推板外,亦可同時潤滑該轉軸的一端。 Wherein, one end of the rotating shaft provided with the thrust plate is adjacent to the hole groove. Accordingly, in addition to lubricating the thrust plate, the lubricating fluid contained in the accommodating space can also lubricate one end of the rotating shaft at the same time.

其中,該動壓板朝向該止推板之表面包含一內輪廓及一外輪廓,該內輪廓涵蓋該孔槽,該外輪廓涵蓋該內輪廓,且該外輪廓與該動壓板的外周緣具有一間距,該內輪廓與該外輪廓之間構成一區域,各該動壓溝設置於該區域中。藉此,各該動壓溝係不連通該孔槽或該動壓板的外周緣。 The surface of the dynamic pressure plate facing the thrust plate includes an inner contour and an outer contour, the inner contour covers the hole and the groove, the outer contour covers the inner contour, and the outer contour and the outer peripheral edge of the dynamic pressure plate have a An interval forms a region between the inner contour and the outer contour, and each of the dynamic pressure grooves is disposed in the region. Thereby, each of the dynamic pressure grooves does not communicate with the hole groove or the outer peripheral edge of the dynamic pressure plate.

其中,該止推板朝向該動壓板之一底面具有一外周緣,該外周緣在該轉軸之軸向上涵蓋該外輪廓,藉以使各該動壓溝不會沿該轉軸之徑向朝外延伸超出該止推板。 The thrust plate has an outer peripheral edge facing one of the bottom plates of the dynamic pressure plate. The outer peripheral edge covers the outer contour in the axial direction of the rotating shaft, so that the dynamic pressure grooves do not extend outward along the radial direction of the rotating shaft. Exceed the thrust plate.

其中,該止推板朝向該動壓板之一底面具有一內周緣,該內輪廓在該轉軸之軸向上涵蓋該內周緣,藉以使各該動壓溝不會沿該轉軸之 徑向朝內延伸超出該止推板。 Wherein, the thrust plate has an inner peripheral edge facing one of the bottom plates of the dynamic pressure plate, and the inner contour covers the inner peripheral edge in the axial direction of the rotating shaft, so that the dynamic pressure grooves do not extend inward along the radial direction of the rotating shaft. Exceed the thrust plate.

其中,各該動壓溝具有二側緣,且以該孔槽為中心,各該動壓溝之至少一側緣的部分區段或全部係形成一螺線,且該螺線係為等角螺線。藉由使各該動壓溝的至少一側緣形成螺線,能夠有效在該轉軸旋轉時降低其摩擦扭矩。 Wherein, each of the dynamic pressure grooves has two side edges and is centered on the hole groove. Part or all of at least one side edge of each of the dynamic pressure grooves forms a spiral, and the spiral is equiangular. Spiral. By forming a spiral on at least one side edge of each of the dynamic pressure grooves, it is possible to effectively reduce the friction torque when the rotating shaft rotates.

其中,各該動壓溝具有二側緣,各該動壓溝包含一第一端部及一第二端部,該二側緣分別連接該第一端部及該第二端部,該第一端部位於該內輪廓,該第二端部位於該外輪廓。藉此,各該動壓溝係由該內輪廓延伸至該外輪廓。 Each of the dynamic pressure grooves has two side edges. Each of the dynamic pressure grooves includes a first end portion and a second end portion. The two side edges are respectively connected to the first end portion and the second end portion. One end is located on the inner contour, and the second end is located on the outer contour. Thereby, each of the dynamic pressure grooves extends from the inner contour to the outer contour.

其中,各該動壓溝之至少一側緣的部分區段或全部形成由該第一端部朝該第二端部漸伸之一漸伸線。藉由使各該動壓溝的至少一側緣形成漸伸線,能夠有效在該轉軸旋轉時降低其摩擦扭矩。 Wherein, a part or all of at least one side edge of each of the dynamic pressure grooves forms an involute line that gradually extends from the first end portion toward the second end portion. By forming at least one side edge of each of the dynamic pressure grooves to form an involute line, it is possible to effectively reduce the friction torque when the rotary shaft rotates.

其中,該二側緣的間距由該第一端部朝該第二端部漸增,使各該動壓溝的寬度能夠沿該轉軸之徑向朝外形成漸增,使該動壓板與該止推板之間的潤滑流體層能夠均勻受力。 The distance between the two side edges is gradually increased from the first end portion toward the second end portion, so that the width of each dynamic pressure groove can be gradually increased outward along the radial direction of the rotation axis, so that the dynamic pressure plate and the The lubricating fluid layer between the thrust plates can be uniformly stressed.

其中,該內輪廓與該外輪廓分別為以該動壓板中心為圓心的圓形。藉此,各該動壓溝之第一端部及第二端部係分別位於形成同心圓的內輪廓與外輪廓上。 Wherein, the inner contour and the outer contour are each a circle with the center of the dynamic pressure plate as a circle center. Thereby, the first end portion and the second end portion of each of the dynamic pressure grooves are respectively located on an inner contour and an outer contour forming a concentric circle.

其中,該表面包含一分界輪廓該分界輪廓為以該動壓板中心為圓心的圓形,該分界輪廓位於該內輪廓與該外輪廓之間,該內輪廓與該分界輪廓之間構成一第一區域,該分界輪廓與該外輪廓之間構成一第二區域,且以該孔槽為中心,各該動壓溝的至少一側緣在該第一區域中的區段係形成一等角螺線,該至少一側緣在該第二區域中的區段係形成一漸伸線。藉由使各該動壓溝的至少一側緣形成上述形狀,能夠有效在該轉軸旋轉時降低其摩擦扭矩。 Wherein, the surface includes a boundary contour, the boundary contour is a circle with the center of the dynamic pressure plate as a circle, the boundary contour is located between the internal contour and the external contour, and the first contour is formed between the internal contour and the boundary contour. A second region is formed between the boundary contour and the outer contour, with the hole groove as the center, and at least one side edge of each of the dynamic pressure grooves in the first region forms an equiangular spiral Line, the section of the at least one side edge in the second region forms an involute line. By forming at least one edge of each of the dynamic pressure grooves into the shape described above, it is possible to effectively reduce the friction torque when the rotating shaft rotates.

其中,該內輪廓相對該動壓板中心具有一第一半徑ri,該外輪廓相對該動壓板中心具有一第二半徑ro,該分界輪廓相對該動壓板中心之一第三半徑rm可以表示如下式所示:rm=ri+(ro-ri)/K其中,1<K<1.5,藉以確保該第一區域的範圍足夠大,使各該動壓溝的至少一側緣形成等角螺線之區段足夠長,能夠適當分配該至少一側緣形成等角螺線之區段與形成漸伸線之區段的比例,以提升降低該轉軸之摩擦扭矩的效果。 Wherein, the inner contour has a first radius r i relative to the center of the dynamic plate, the outer contour has a second radius r o relative to the center of the dynamic plate, and the boundary contour may have a third radius r m relative to one of the center of the dynamic plate. The expression is as follows: r m = r i + (r o -r i ) / K, where 1 <K <1.5, so as to ensure that the range of the first region is large enough that at least one side of each of the dynamic pressure grooves The section of the edge forming the equiangular spiral is long enough to appropriately allocate the ratio of the section of the at least one side of the edge forming the equiangular spiral to the section forming the involute to increase the effect of reducing the frictional torque of the rotating shaft.

其中,所述等角螺線之角度為25°~35°,且所述漸伸線於該外輪廓之端點的切線角度為11°~13°,藉以使降低該轉軸之摩擦扭矩的效果較為顯著。 Wherein, the angle of the equiangular spiral is 25 ° ~ 35 °, and the tangent angle of the involute line at the endpoint of the outer contour is 11 ° ~ 13 °, so as to reduce the effect of friction torque of the rotating shaft. More significant.

其中,該數個動壓溝的數量為12~20個,且較佳為為16個,藉以使降低該轉軸之摩擦扭矩的效果較為顯著。 Among them, the number of the plurality of dynamic pressure grooves is 12-20, and preferably 16 so that the effect of reducing the friction torque of the rotating shaft is more significant.

其中,各該動壓溝在該轉軸之軸向上的深度為20~30μm,且較佳為24~26μm,藉以使降低該轉軸之摩擦扭矩的效果較為顯著。 The depth of each of the dynamic pressure grooves in the axial direction of the rotating shaft is 20 to 30 μm, and preferably 24 to 26 μm, so that the effect of reducing the friction torque of the rotating shaft is more significant.

其中,該軸承套內部可以設有一定位件,該定位件結合於該軸承套的內周壁,且該定位件抵接該軸承,藉以支撐該軸承,進而將該軸承定位於該軸承套。 A positioning member may be provided inside the bearing sleeve, the positioning member is coupled to the inner peripheral wall of the bearing sleeve, and the positioning member abuts the bearing, thereby supporting the bearing, and then positioning the bearing on the bearing sleeve.

其中,該止推板之一側與該動壓板之表面保持一間距,該止推板之另一側與該軸承或該定位件保持一間距,藉以使該轉軸能夠不受阻礙地自由樞轉。 One side of the thrust plate is kept at a distance from the surface of the dynamic pressure plate, and the other side of the thrust plate is kept at a distance from the bearing or the positioning member, so that the rotating shaft can be freely pivoted unhindered. .

其中,該止推板及該轉軸係經由雷射焊接結合,藉以提升該轉軸與該止推板的結合強度。 Wherein, the thrust plate and the rotating shaft are combined by laser welding, so as to improve the bonding strength of the rotating shaft and the thrust plate.

其中,該動壓板包含相互結合一板片及座體,該動壓板朝向該止推板之表面係位於該板片,該座體之硬度大於該板片之硬度。藉此, 透過在硬度較小之板片上開設該數個動壓溝,可以降低該數個動壓溝的加工難度,且硬度較大之座體仍然能夠使該動壓板維持足夠的剛性。 The dynamic pressure plate includes a plate and a base body combined with each other. The surface of the dynamic pressure plate facing the thrust plate is located on the plate, and the hardness of the base body is greater than the hardness of the plate. Therefore, by opening the plurality of dynamic pressure grooves on the plate with a smaller hardness, the processing difficulty of the plurality of dynamic pressure grooves can be reduced, and the seat body with a larger hardness can still maintain the rigidity of the dynamic plate.

其中,該板片之表面以蝕刻或電鑄成形該數個動壓溝。藉此,該數個動壓溝的加工難度能夠有效降低,並且提升該動壓溝的成形精確度。 The surface of the plate is etched or electroformed to form the dynamic pressure grooves. Thereby, the processing difficulty of the dynamic pressure grooves can be effectively reduced, and the forming accuracy of the dynamic pressure grooves is improved.

其中,該動壓板設置於一底蓋上,且一密封環設置於該動壓板及該底蓋之間;該密封環可由橡膠或矽膠製成。藉此,可避免該容置空間中的潤滑流體滲漏至該動壓板與該底蓋之間。 The dynamic pressure plate is disposed on a bottom cover, and a sealing ring is disposed between the dynamic pressure plate and the bottom cover; the sealing ring may be made of rubber or silicone. Thereby, the leakage of the lubricating fluid in the accommodating space between the dynamic pressure plate and the bottom cover can be prevented.

一種馬達之動壓板,包含:一板片,該板片之一表面設有以蝕刻或電鑄成形的數個動壓溝;及一座體,該座體之硬度大於該板片之硬度,該板片背向該表面之一側結合於該座體。藉此,該動壓板可達到降低該數個動壓溝的加工難度及維持該動壓板的剛性之功效。 A dynamic pressure plate for a motor includes: a plate, one surface of which is provided with several dynamic pressure grooves formed by etching or electroforming; and a body whose hardness is greater than the hardness of the plate. One side of the plate facing away from the surface is bonded to the base. Thereby, the dynamic pressure plate can achieve the effects of reducing the processing difficulty of the several dynamic pressure grooves and maintaining the rigidity of the dynamic pressure plate.

其中,該板片中心設有一孔槽。藉此,由於該板片之硬度較小,可使該孔槽的加工難度有效降低。 The center of the plate is provided with a hole slot. Therefore, since the hardness of the plate is relatively small, the processing difficulty of the hole and groove can be effectively reduced.

其中,該板片為一軟性電路板。藉此,該板片之表面可以透過蝕刻或電鑄等方式成形該數個動壓溝。 The board is a flexible circuit board. Thereby, the surface of the plate can be formed into a plurality of dynamic pressure grooves by means of etching or electroforming.

其中,該座體為金屬材質製成之板體。此,該座體之硬度將遠大於該板片之硬度,使該座體能夠有效維持該動壓板的剛性。 Wherein, the base is a plate body made of metal material. Therefore, the hardness of the seat body will be much larger than that of the plate, so that the seat body can effectively maintain the rigidity of the dynamic pressure plate.

其中,該數個動壓溝的數量為12~20個,且較佳為16個,藉以使降低一轉軸之摩擦扭矩的效果較為顯著。 Among them, the number of the plurality of dynamic pressure grooves is 12-20, and preferably 16, so that the effect of reducing the friction torque of a rotating shaft is more significant.

其中,各該動壓溝在一軸向上的深度為20~30μm,且較佳為24~26μm,該軸向垂直該表面,藉以使降低一轉軸之摩擦扭矩的效果較為顯著。 Each of the dynamic pressure grooves has a depth of 20 to 30 μm in one axial direction, and preferably 24 to 26 μm. The axial direction is perpendicular to the surface, so that the effect of reducing the friction torque of a rotating shaft is more significant.

藉由上述結構,本發明各實施例的馬達及其動壓板藉由於該動壓板之表面設有數個動壓溝,使潤滑流體填充於各該動壓溝中,可以增 加該動壓板與該止推板之間的潤滑流體層的有效厚度及支撐力,具有降低該轉軸的摩擦扭矩功效。 With the above-mentioned structure, the motor and the dynamic pressure plate of the embodiments of the present invention can be provided with a plurality of dynamic pressure grooves on the surface of the dynamic pressure plate, so that the lubricating fluid is filled in each of the dynamic pressure grooves. The effective thickness and supporting force of the lubricating fluid layer between the push plates has the effect of reducing the friction torque of the rotating shaft.

〔本發明〕 〔this invention〕

1‧‧‧基座 1‧‧‧ base

11‧‧‧軸承套 11‧‧‧bearing sleeve

111‧‧‧開口 111‧‧‧ opening

112‧‧‧底蓋 112‧‧‧Cover

12‧‧‧軸承 12‧‧‧bearing

13‧‧‧定位件 13‧‧‧ Positioning piece

14‧‧‧密封環 14‧‧‧sealing ring

2‧‧‧轉子 2‧‧‧ rotor

21‧‧‧轉軸 21‧‧‧ shaft

22‧‧‧止推板 22‧‧‧thrust plate

221‧‧‧外周緣 221‧‧‧ outer periphery

222‧‧‧內周緣 222‧‧‧Inner periphery

3‧‧‧動壓板 3‧‧‧ dynamic pressure plate

3a‧‧‧板片 3a‧‧‧ plates

3b‧‧‧座體 3b‧‧‧ seat

31‧‧‧表面 31‧‧‧ surface

32‧‧‧動壓溝 32‧‧‧Dynamic pressure ditch

321‧‧‧側緣 321‧‧‧Side Margin

322‧‧‧第一端部 322‧‧‧first end

323‧‧‧第二端部 323‧‧‧second end

33‧‧‧孔槽 33‧‧‧hole slot

34‧‧‧外周緣 34‧‧‧ outer periphery

341‧‧‧凹部 341‧‧‧concave

35‧‧‧凹槽 35‧‧‧Groove

S‧‧‧容置空間 S‧‧‧ accommodation space

C1‧‧‧內輪廓 C1‧‧‧ inside contour

C2‧‧‧外輪廓 C2‧‧‧Outline

C3‧‧‧分界輪廓 C3‧‧‧ Boundary outline

R‧‧‧區域 R‧‧‧ area

R1‧‧‧第一區域 R1‧‧‧First Zone

R2‧‧‧第二區域 R2‧‧‧Second Zone

θ 1‧‧‧角度 θ 1‧‧‧ angle

θ 2‧‧‧角度 θ 2‧‧‧ angle

〔習知〕 [Learning]

9‧‧‧馬達 9‧‧‧ Motor

91‧‧‧套筒 91‧‧‧ sleeve

911‧‧‧軸向推力板 911‧‧‧Axial thrust plate

92‧‧‧軸 92‧‧‧axis

921‧‧‧止推板 921‧‧‧thrust plate

第1圖:一種習知馬達的剖視圖。 Figure 1: A cross-sectional view of a conventional motor.

第2圖:本發明第一實施例的組合結構剖視示意圖。 FIG. 2 is a schematic cross-sectional view of a combined structure according to the first embodiment of the present invention.

第3圖:本發明第一實施例之動壓板的立體外觀示意圖。 FIG. 3 is a schematic perspective view of a dynamic pressure plate according to the first embodiment of the present invention.

第4圖:本發明第一實施例之動壓板的上視示意圖。 FIG. 4 is a schematic top view of a dynamic pressure plate according to the first embodiment of the present invention.

第5圖:本發明第一實施例之動壓溝形成漸伸線之區段於外輪廓之端點的切線角度與轉軸之摩擦扭矩的關係圖。 FIG. 5 is a diagram showing the relationship between the tangent angle of the segment of the dynamic pressure groove forming an involute line at the end point of the outer contour and the friction torque of the rotating shaft according to the first embodiment of the present invention.

第6圖:本發明第一實施例之動壓溝數量與轉軸之摩擦扭矩的關係圖。 FIG. 6 is a relationship diagram between the number of dynamic pressure grooves and the friction torque of the rotating shaft in the first embodiment of the present invention.

第7圖:本發明第一實施例之動壓溝深度與轉軸之摩擦扭矩的關係圖。 FIG. 7 is a relationship diagram between the depth of the dynamic pressure groove and the friction torque of the rotating shaft according to the first embodiment of the present invention.

第8圖:本發明實施例之基座的定位件置於該軸承外側的組合結構部視示意圖。 FIG. 8 is a schematic view of a combined structural part where the positioning member of the base is placed outside the bearing according to the embodiment of the present invention.

第9圖:本發明第一實施例之動壓板的結構分解示意圖。 FIG. 9 is an exploded view of the structure of a dynamic pressure plate according to the first embodiment of the present invention.

第10圖:本發明第二實施例的組合結構剖視示意圖。 FIG. 10 is a schematic cross-sectional view of a combined structure according to a second embodiment of the present invention.

第11圖:本發明第二實施例之動壓板的結構分解示意圖。 FIG. 11 is an exploded view of the structure of a dynamic pressure plate according to the second embodiment of the present invention.

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,係本發明第一實施例之馬達,包含一基座1、一轉子2及一動壓板3。該轉子2可旋轉地結合於該基座1,該動壓板3設置於該基座1。 In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention in detail with the accompanying drawings as follows: Please refer to FIG. 2, The motor according to the first embodiment of the present invention includes a base 1, a rotor 2, and a dynamic pressure plate 3. The rotor 2 is rotatably coupled to the base 1, and the dynamic pressure plate 3 is disposed on the base 1.

該基座1包含一軸承套11,該軸承套11外周可供結合殼體、鐵芯或電路板等構件。該軸承套11設有一開口111。該軸承套11內部設有一軸承12。在本實施例中,該軸承12可以為動壓軸承,惟,該軸承12亦可為其他型式的軸承(例如:銅軸承)構造,本發明並不以此為限。又,該軸承套11內部可以設有一定位件13,該定位件13可以為一環體或數個塊體,該定位件13可以結合於該軸承套11的內周壁,且該定位件13抵接該軸承12,以供支撐該軸承12,進而將該軸承12定位於該軸承套11。惟,該軸承12亦可經由緊配合或與該軸承套11一體設置等方式定位於該軸承套11,故本發明並不以此為限。 The base 1 includes a bearing sleeve 11. The outer periphery of the bearing sleeve 11 can be used to combine components such as a housing, an iron core, or a circuit board. The bearing sleeve 11 is provided with an opening 111. A bearing 12 is disposed inside the bearing sleeve 11. In this embodiment, the bearing 12 may be a dynamic pressure bearing. However, the bearing 12 may also be a structure of another type of bearing (for example, a copper bearing), which is not limited in the present invention. In addition, a positioning member 13 may be provided inside the bearing sleeve 11. The positioning member 13 may be a ring or a plurality of blocks. The positioning member 13 may be coupled to the inner peripheral wall of the bearing sleeve 11, and the positioning member 13 abuts. The bearing 12 is used to support the bearing 12, and the bearing 12 is positioned on the bearing sleeve 11. However, the bearing 12 can also be positioned on the bearing sleeve 11 by means of a tight fit or being integrally provided with the bearing sleeve 11, so the invention is not limited thereto.

該轉子2包含一轉軸21及一止推板22,該轉軸21可以由該開口111伸入該軸承套11,且該轉軸21結合於該軸承12,使該轉軸21能夠相對該軸承套11旋轉,因此該轉子2形成可旋轉地結合於該基座1。該止推板22設置於該轉軸21的一端。其中,該轉軸21與該止推板22均可由金屬材質製成,使該轉軸21與該止推板22可以透過雷射焊接結合,以提升該轉軸21與該止推板22的結合強度。 The rotor 2 includes a rotating shaft 21 and a thrust plate 22. The rotating shaft 21 can protrude into the bearing sleeve 11 through the opening 111, and the rotating shaft 21 is coupled to the bearing 12 so that the rotating shaft 21 can rotate relative to the bearing sleeve 11. Therefore, the rotor 2 is rotatably coupled to the base 1. The thrust plate 22 is disposed on one end of the rotating shaft 21. Wherein, the rotating shaft 21 and the thrust plate 22 can both be made of a metal material, so that the rotating shaft 21 and the thrust plate 22 can be combined by laser welding to improve the bonding strength of the rotating shaft 21 and the thrust plate 22.

該動壓板3設置於該軸承套11遠離該開口111之一側,該動壓板3與該軸承12之間形成一容置空間S,該轉子2的止推板22係設置於該容置空間S中,使該止推板22形成於該軸承12與該動壓板3之間,且該動壓板3朝向該轉子2的止推板22。該動壓板3朝向該止推板22之一表面31設有數個動壓溝32。 The dynamic pressure plate 3 is disposed on one side of the bearing sleeve 11 away from the opening 111. An accommodation space S is formed between the dynamic pressure plate 3 and the bearing 12. The thrust plate 22 of the rotor 2 is disposed in the accommodation space. In S, the thrust plate 22 is formed between the bearing 12 and the dynamic pressure plate 3, and the dynamic pressure plate 3 faces the thrust plate 22 of the rotor 2. A plurality of dynamic pressure grooves 32 are formed on a surface 31 of the dynamic pressure plate 3 facing the thrust plate 22.

藉由上述結構,本發明第一實施例之馬達實際使用時,該動壓板3與該軸承12之間的容置空間S可供容置潤滑流體(例如:油),使該動壓板3與該止推板22之間能夠形成一潤滑流體層(例如:油膜),因此使該動壓板3與該止推板22能夠保持一間距,以降低該轉軸21的摩擦扭矩。由於該動壓板3之表面31設有數個動壓溝32,因此所述潤滑流體 將填充於各該動壓溝32中,以增加該潤滑流體層的有效厚度及支撐力。藉此,當該轉軸21承受壓力或是在轉動過程中產生震動時,能夠有效避免該潤滑流體層變薄,以防止該動壓板3與該止推板22直接接觸的情形,因此該第一實施例之馬達能夠進一步降低該轉軸21的摩擦扭矩。 With the above structure, when the motor of the first embodiment of the present invention is actually used, the accommodating space S between the dynamic pressure plate 3 and the bearing 12 can be used for accommodating a lubricating fluid (for example, oil), so that the dynamic pressure plate 3 and A lubricating fluid layer (eg, an oil film) can be formed between the thrust plates 22, so that the dynamic pressure plate 3 and the thrust plate 22 can maintain a distance to reduce the friction torque of the rotating shaft 21. Since the surface 31 of the dynamic pressure plate 3 is provided with a plurality of dynamic pressure grooves 32, the lubricating fluid will be filled in each of the dynamic pressure grooves 32 to increase the effective thickness and supporting force of the lubricating fluid layer. Therefore, when the rotating shaft 21 receives pressure or generates vibration during the rotation, the lubricating fluid layer can be effectively prevented from being thinned to prevent the dynamic pressure plate 3 from directly contacting the thrust plate 22, so the first The motor of the embodiment can further reduce the friction torque of the rotating shaft 21.

據前述結構,以下詳細列舉本發明各實施例之馬達的特點並逐一說明:請參照第2及3圖所示,該動壓板3中心設有一孔槽33,該孔槽33連通該容置空間S,使該孔槽33可作為一潤滑流體儲存槽。該轉軸21設有該止推板22的一端可以與該孔槽33相鄰接,藉此,該容置空間S所容置的潤滑流體除了可以潤滑該止推板22外,亦可同時潤滑該轉軸21的一端。 According to the foregoing structure, the characteristics of the motors of the embodiments of the present invention are listed in detail below and explained one by one: Please refer to FIG. 2 and FIG. S, the hole groove 33 can be used as a lubricating fluid storage groove. One end of the rotating shaft 21 provided with the thrust plate 22 can be adjacent to the hole groove 33, thereby the lubrication fluid contained in the accommodating space S can not only lubricate the thrust plate 22, but also simultaneously. One end of the rotating shaft 21.

請參照第3及4圖所示,該表面31包含一內輪廓C1及一外輪廓C2,該內輪廓C1涵蓋該孔槽33,該外輪廓C2涵蓋該內輪廓C1,且該外輪廓C2與該動壓板3的外周緣具有一間距,該內輪廓C1與該外輪廓C2之間構成一區域R,各該動壓溝32設置於該區域R中。藉此,各該動壓溝32係不連通該孔槽33或該動壓板3的外周緣。其中,請一併參照第2圖所示,該止推板22朝向該動壓板3之一底面具有一外周緣221及一內周緣222,該外周緣221可以在該轉軸21之軸向上涵蓋該外輪廓C2,使各該動壓溝32不會沿該轉軸21之徑向朝外延伸超出該止推板22;相對地,該內輪廓C1可以在該轉軸21之軸向上涵蓋該內周緣222,使各該動壓溝32不會沿該轉軸21之徑向朝內延伸超出該止推板22。換言之,各該動壓溝32可以在該轉軸21之軸向上位於該止推板22之範圍內,使該數個動壓溝32能夠確實避免該動壓板3與該止推板22之間的潤滑流體層變薄,以防止該動壓板3與該止推板22直接接觸的情形。 Please refer to Figs. 3 and 4, the surface 31 includes an inner contour C1 and an outer contour C2, the inner contour C1 covers the hole groove 33, the outer contour C2 covers the inner contour C1, and the outer contour C2 and An outer peripheral edge of the dynamic pressure plate 3 has a distance, and a region R is formed between the inner contour C1 and the outer contour C2. Each of the dynamic pressure grooves 32 is disposed in the region R. Accordingly, each of the dynamic pressure grooves 32 does not communicate with the hole groove 33 or the outer peripheral edge of the dynamic pressure plate 3. Among them, please refer to FIG. 2 together. The thrust plate 22 faces an outer peripheral edge 221 and an inner peripheral edge 222 toward one of the bottom plates of the dynamic pressure plate 3. The outer peripheral edge 221 can cover the axial direction of the rotating shaft 21. The outer contour C2, so that each of the dynamic pressure grooves 32 does not extend outward beyond the thrust plate 22 in the radial direction of the rotary shaft 21; relatively, the inner contour C1 may cover the inner peripheral edge 222 in the axial direction of the rotary shaft 21 So that each of the dynamic pressure grooves 32 does not extend inward beyond the thrust plate 22 in the radial direction of the rotating shaft 21. In other words, each of the dynamic pressure grooves 32 can be located within the range of the thrust plate 22 in the axial direction of the rotating shaft 21, so that the plurality of dynamic pressure grooves 32 can surely avoid the gap between the dynamic pressure plate 3 and the thrust plate 22. The lubricating fluid layer is thinned to prevent the dynamic pressure plate 3 from directly contacting the thrust plate 22.

請參照第3及4圖所示,各該動壓溝32具有二側緣321, 且以該孔槽33為中心,各該動壓溝32之至少一側緣321的部分區段或全部係形成一螺線或一漸伸線。詳言之,各該動壓溝32包含一第一端部322及一第二端部323,該二側緣321分別連接該第一端部322及該第二端部323,該第一端部322位於該內輪廓C1,該第二端部323位於該外輪廓C2,使各該動壓溝32係由該內輪廓C1延伸至該外輪廓C2。在本實施例中,該內輪廓C1與該外輪廓C2分別為以該動壓板3中心為圓心的圓形,因此各該動壓溝32之第一端部322及第二端部323係分別位於形成同心圓的內輪廓C1與外輪廓C2上。各該動壓溝32之至少一側緣321的部分區段或全部形成以該孔槽33為中心的一等角螺線;或者形成由該第一端部322朝該第二端部323漸伸之一漸伸線。此外,且該二側緣321的間距可以由該第一端部322朝該第二端部323漸增,使該動壓板3與該止推板22之間的潤滑流體層能夠均勻受力。 Please refer to FIG. 3 and FIG. 4, each of the dynamic pressure grooves 32 has two side edges 321, and the hole groove 33 is the center. At least one side edge 321 of each of the dynamic pressure grooves 32 is partially or completely connected. Form a spiral or an involute. In detail, each of the dynamic pressure grooves 32 includes a first end portion 322 and a second end portion 323, and the two side edges 321 are respectively connected to the first end portion 322 and the second end portion 323, and the first end The portion 322 is located in the inner contour C1, and the second end portion 323 is located in the outer contour C2, so that each of the dynamic pressure grooves 32 extends from the inner contour C1 to the outer contour C2. In this embodiment, the inner contour C1 and the outer contour C2 are each a circle with the center of the dynamic pressure plate 3 as a circle. Therefore, the first end portion 322 and the second end portion 323 of each of the dynamic pressure grooves 32 are respectively It is located on the inner contour C1 and the outer contour C2 forming a concentric circle. A part or all of at least one side edge 321 of each of the dynamic pressure grooves 32 forms an equiangular spiral with the hole groove 33 as a center; or gradually formed from the first end portion 322 toward the second end portion 323. Stretch one to the involute line. In addition, the distance between the two side edges 321 can be gradually increased from the first end portion 322 toward the second end portion 323, so that the lubricating fluid layer between the dynamic pressure plate 3 and the thrust plate 22 can be uniformly stressed.

在本實施例中,該表面31包含一分界輪廓C3,該分界輪廓C3同樣為以該動壓板3中心為圓心的圓形,該分界輪廓C3位於該內輪廓C1與該外輪廓C2之間,該分界輪廓C3將該內輪廓C1與該外輪廓C2之間的區域R劃分為一第一區域R1及一第二區域R2。該內輪廓C1與該分界輪廓C3之間構成該第一區域R1,該分界輪廓C3與該外輪廓C2之間構成該第二區域R2,且以該孔槽33為中心,各該動壓溝32的至少一側緣321在該第一區域R1中的區段係形成一等角螺線,該至少一側緣321在該第二區域R2中的區段係形成一漸伸線。換言之,各該動壓溝32的至少一側緣321的一區段係形成以該孔槽33為中心的一等角螺線,且另一區段係形成由該第一端部322朝該第二端部323漸伸之一漸伸線。藉由使各該動壓溝32的至少一側緣321形成上述形狀,能夠有效在該轉軸21旋轉時降低其摩擦扭矩。 In this embodiment, the surface 31 includes a boundary contour C3. The boundary contour C3 is also a circle with the center of the dynamic pressure plate 3 as a circle. The boundary contour C3 is located between the inner contour C1 and the outer contour C2. The boundary contour C3 divides a region R between the inner contour C1 and the outer contour C2 into a first region R1 and a second region R2. The first region R1 is formed between the inner contour C1 and the boundary contour C3, the second region R2 is formed between the boundary contour C3 and the outer contour C2, and the dynamic groove is centered on the hole groove 33. The section of at least one side edge 321 of 32 in the first region R1 forms an equiangular spiral, and the section of the at least one side edge 321 in the second region R2 forms an involute line. In other words, one section of at least one side edge 321 of each of the dynamic pressure grooves 32 forms an equiangular spiral with the hole groove 33 as the center, and the other section is formed by the first end portion 322 toward the The second end portion 323 extends one of the gradually extending lines. By forming at least one side edge 321 of each of the dynamic pressure grooves 32 into the shape described above, it is possible to effectively reduce the friction torque when the rotating shaft 21 rotates.

更詳言之,請參照第3圖所示,該內輪廓C1相對該動壓板 3中心具有一第一半徑ri,該外輪廓C2相對該動壓板3中心具有一第二半徑ro,該分界輪廓C3相對該動壓板3中心之一第三半徑rm可以表示如下式(1)所示:rm=ri+(ro-ri)/K (1) In more detail, as shown in FIG. 3, the inner contour C1 has a first radius r i relative to the center of the dynamic pressure plate 3, and the outer contour C2 has a second radius r o relative to the center of the dynamic pressure plate 3. The third radius r m of the boundary contour C3 with respect to one of the centers of the dynamic pressure plate 3 can be expressed by the following formula (1): r m = r i + (r o -r i ) / K (1)

其中,1<K<1.5。 Among them, 1 <K <1.5.

藉由使該分界輪廓C3之第三半徑rm符合上式(1),可以確保該第一區域R1的範圍足夠大,使各該動壓溝32的至少一側緣321形成等角螺線之區段足夠長,能夠適當分配該至少一側緣321形成等角螺線之區段與形成漸伸線之區段的比例,以提升降低該轉軸21之摩擦扭矩的效果。 By making the third radius r m of the boundary contour C3 conform to the above formula (1), it can be ensured that the range of the first region R1 is sufficiently large so that at least one edge 321 of each of the dynamic pressure grooves 32 forms an equiangular spiral The section is long enough to appropriately allocate the ratio of the section where the at least one side edge 321 forms an equilateral spiral to the section which forms an involute line, so as to improve the effect of reducing the friction torque of the rotating shaft 21.

其中,除了各該動壓溝32的至少一側緣321形成等角螺線之區段與形成漸伸線之區段的比例外,所述等角螺線及漸伸線的形狀亦會影響該數個動壓溝32降低該轉軸21之摩擦扭矩的效果。請一併參照第5圖所示,所述漸伸線於該外輪廓C2之端點的切線角度θ 2為11°~13°,且所述等角螺線之角度θ 1設為25°~35°時,降低該轉軸21之摩擦扭矩的效果最為顯著。 Among them, in addition to the ratio of the section where at least one side edge 321 of each of the dynamic pressure grooves 32 forms an equilateral spiral and the section which forms an involute, the shape of the equiangular spiral and the involute also affects The effect of the plurality of dynamic pressure grooves 32 on reducing the friction torque of the rotating shaft 21. Please refer to FIG. 5 together. The tangent angle θ 2 of the involute line at the end point of the outer contour C2 is 11 ° to 13 °, and the angle θ 1 of the equiangular spiral is set to 25 °. At ~ 35 °, the effect of reducing the friction torque of the rotating shaft 21 is most significant.

此外,該數個動壓溝32的數量與深度將會直接影響該動壓板3與該止推板22之間的潤滑流體層之厚度,因此亦會影響該數個動壓溝32降低該轉軸21之摩擦扭矩的效果。請參照第6圖所示,該數個動壓溝32的數量為16個時,降低該轉軸21之摩擦扭矩的效果最為顯著。據此,該數個動壓溝32的數量較佳為12~20個,且更佳為16個。另一方面,請參照第7圖所示,各該動壓溝32的深度為24~26μm時,降低該轉軸21之摩擦扭矩的效果最為顯著。據此,各該動壓溝32的深度較佳為20~30μm個,且更佳為24~26μm。 In addition, the number and depth of the plurality of dynamic pressure grooves 32 will directly affect the thickness of the lubricating fluid layer between the dynamic pressure plate 3 and the thrust plate 22, so it will also affect the plurality of dynamic pressure grooves 32 to reduce the rotation shaft. 21 friction torque effect. Please refer to FIG. 6, when the number of the plurality of dynamic pressure grooves 32 is 16, the effect of reducing the friction torque of the rotating shaft 21 is most significant. Accordingly, the number of the plurality of dynamic pressure grooves 32 is preferably 12 to 20, and more preferably 16. On the other hand, referring to FIG. 7, when the depth of each of the dynamic pressure grooves 32 is 24 to 26 μm, the effect of reducing the friction torque of the rotating shaft 21 is most significant. Accordingly, the depth of each of the dynamic pressure grooves 32 is preferably 20 to 30 μm, and more preferably 24 to 26 μm.

請參照第2圖所示,在本實施例中,該定位件13係在該轉軸21之軸向上設置於該軸承12與該止推板22之間,因此,該止推板22 二側分別朝向該定位件13及該動壓板3之表面31。惟,請參照第8圖所示,在本發明部分實施例中,該定位件13可以在該轉軸21之徑向上設置於該軸承12外側,因此該止推板22之一側可以同時朝向該軸承12及該定位件13,故本發明並不以此為限。其中,由於該動壓板3與該軸承12之間的容置空間S可供容置潤滑流體,因此該止推板22之一側可以與該動壓板3之表面31保持一間距,該止推板22之另一側則可與該軸承12或該定位件13保持一間距,使該轉軸21能夠不受阻礙地自由樞轉。 Please refer to FIG. 2. In this embodiment, the positioning member 13 is disposed between the bearing 12 and the thrust plate 22 in the axial direction of the rotating shaft 21. Therefore, the two sides of the thrust plate 22 are respectively Toward the positioning member 13 and the surface 31 of the dynamic pressure plate 3. However, referring to FIG. 8, in some embodiments of the present invention, the positioning member 13 may be disposed outside the bearing 12 in the radial direction of the rotating shaft 21, so one side of the thrust plate 22 may face the same at the same time. The bearing 12 and the positioning member 13 are not limited thereto. Among them, since the accommodating space S between the dynamic pressure plate 3 and the bearing 12 can be used for accommodating the lubricating fluid, one side of the thrust plate 22 can be maintained at a distance from the surface 31 of the dynamic pressure plate 3, and the thrust The other side of the plate 22 can maintain a distance from the bearing 12 or the positioning member 13, so that the rotating shaft 21 can freely pivot.

請參照第2圖所示,在本實施例中,該軸承套11遠離該開口111之一側設有一底蓋112,該底蓋112係封閉該軸承套11遠離該開口111之一側,使其形成封閉。該動壓板3可以設置於該底蓋112,使其形成於該軸承套11遠離該開口111之一側。 Referring to FIG. 2, in this embodiment, a bottom cover 112 is provided on one side of the bearing sleeve 11 away from the opening 111, and the bottom cover 112 closes one side of the bearing sleeve 11 away from the opening 111, so that It forms closed. The dynamic pressure plate 3 may be disposed on the bottom cover 112 so that it is formed on one side of the bearing sleeve 11 away from the opening 111.

值得注意的是,該動壓板3在該轉軸21之軸向上的厚度較佳小於該底蓋112的厚度,使得該第一實施例之馬達的整體軸向高度不易受設置該動壓板3所影響。惟,該動壓板3必須設置數個動壓溝32,若欲縮減該動壓板3的厚度,可能會導致難以在該動壓板3之表面31加工成型該數個動壓溝32。為此,請參照第9圖所示,在本實施例中,該動壓板3包含相互結合一板片3a及座體3b,該動壓板3朝向該止推板22之表面31係位於該板片3a,該座體3b之硬度大於該板片3a之硬度。藉此,透過在硬度較小之板片3a上開設該數個動壓溝32,可以降低該數個動壓溝32的加工難度,惟,該板片3a係結合於硬度較大之座體3b,因此該動壓板3仍然能夠維持足夠的剛性。再者,該板片3a中心可以開設一貫孔或連通該表面31之一盲孔以作為該孔槽33,由於該板片3a之硬度較小,亦可使該孔槽33的加工難度有效降低。 It is worth noting that the thickness of the dynamic pressure plate 3 in the axial direction of the rotating shaft 21 is preferably smaller than the thickness of the bottom cover 112, so that the overall axial height of the motor of the first embodiment is not easily affected by the installation of the dynamic pressure plate 3. . However, the dynamic pressure plate 3 must be provided with a plurality of dynamic pressure grooves 32. If the thickness of the dynamic pressure plate 3 is to be reduced, it may be difficult to process the dynamic pressure grooves 32 on the surface 31 of the dynamic pressure plate 3. For this reason, please refer to FIG. 9. In this embodiment, the dynamic pressure plate 3 includes a plate 3 a and a base 3 b combined with each other. The surface 31 of the dynamic pressure plate 3 facing the thrust plate 22 is located on the plate. The hardness of the sheet 3a and the seat 3b is greater than the hardness of the plate 3a. Therefore, by opening the plurality of dynamic pressure grooves 32 on the plate 3a having a relatively small hardness, the processing difficulty of the plurality of dynamic pressure grooves 32 can be reduced. However, the plate 3a is combined with a seat having a relatively high hardness. 3b, the dynamic pressure plate 3 can still maintain sufficient rigidity. In addition, a through hole or a blind hole communicating with the surface 31 can be set as the hole groove 33 in the center of the plate 3a. Since the hardness of the plate 3a is small, the processing difficulty of the hole groove 33 can be effectively reduced. .

詳言之,該動壓板3之板片3a可以為一軟性電路板,因此,該板片3a之表面31可以透過蝕刻(例如:化學蝕刻或雷射蝕刻)或電鑄 等方式成形該數個動壓溝32。舉例而言,該板片3a可以為軟性電路板,所述軟性電路板表面可以設有銅箔,故可透過蝕刻所述銅箔以成形該數個動壓溝32。藉此,該數個動壓溝32的加工難度能夠有效降低,且所述蝕刻或電鑄製程能夠很容易地控制各該動壓溝32的寬度及深度,以提升該動壓溝32的成形精確度。該座體3b可以為金屬材質製成之板體(例如:不鏽鋼板或鋁板),藉此,該座體3b之硬度將遠大於該板片3a之硬度,使該座體3b能夠有效維持該動壓板3的剛性。其中,該座體3b可以設有一凹槽35以供容置該板片3a,進而提升該板片3a與該座體3b的結合強度。惟,請參照第10及11圖所示,係本發明第二實施例之馬達,其中,該座體3b無須開設凹槽,該板片3a可以透過焊接或黏合等方式結合固定於該座體3b,故本發明並不以此為限。 In detail, the plate 3a of the dynamic pressure plate 3 may be a flexible circuit board. Therefore, the surface 31 of the plate 3a may be formed by etching (for example, chemical etching or laser etching) or electroforming. Dynamic pressure groove 32. For example, the plate 3a may be a flexible circuit board, and the surface of the flexible circuit board may be provided with a copper foil, so the copper foil may be etched to form the dynamic pressure grooves 32. Thereby, the processing difficulty of the plurality of dynamic pressure grooves 32 can be effectively reduced, and the etching or electroforming process can easily control the width and depth of each of the dynamic pressure grooves 32 to improve the forming of the dynamic pressure grooves 32. Accuracy. The base 3b may be a plate made of a metal material (for example, a stainless steel plate or an aluminum plate), whereby the hardness of the base 3b will be much greater than the hardness of the plate 3a, so that the base 3b can effectively maintain the base. The rigidity of the dynamic pressure plate 3. The base 3b may be provided with a groove 35 for accommodating the plate 3a, thereby improving the bonding strength between the plate 3a and the base 3b. However, please refer to Figs. 10 and 11 for the motor according to the second embodiment of the present invention. The base 3b does not need to be grooved, and the plate 3a can be fixed to the base by welding or bonding. 3b, so the present invention is not limited to this.

再者,其中,該座體3b包含一外周緣34,該外周緣34可以抵接該軸承套11的內周壁,該座體3b於該外周設有一凹部341,該凹部341可以在該動壓板3的組裝過程中供噴嘴伸入該容置空間S,以方便注入潤滑流體。此外,該凹部341亦可供結合於該軸承套11,以固定該動壓板3的位置,藉以防止該動壓板3相對該軸承套11轉動。 Furthermore, the seat body 3b includes an outer peripheral edge 34, which can abut against the inner peripheral wall of the bearing sleeve 11. The seat body 3b is provided with a recess 341 on the outer periphery, and the recess 341 can be on the dynamic pressure plate. During the assembly process of 3, the nozzle is extended into the accommodating space S to facilitate the injection of the lubricating fluid. In addition, the concave portion 341 can also be combined with the bearing sleeve 11 to fix the position of the dynamic pressure plate 3, thereby preventing the dynamic pressure plate 3 from rotating relative to the bearing sleeve 11.

此外,在該第二實施例中,該基座1可以於該動壓板3與該底蓋112之間另設有一密封環14,該密封環14可以由橡膠或矽膠等具有良好彈性的材質製成,該密封環14能夠增加該動壓板3與該底蓋112的密合性,以避免該容置空間S中的潤滑流體滲漏至該動壓板3與該底蓋112之間。 In addition, in the second embodiment, the base 1 may further include a seal ring 14 between the dynamic pressure plate 3 and the bottom cover 112. The seal ring 14 may be made of a material having good elasticity such as rubber or silicone. As a result, the sealing ring 14 can increase the closeness between the dynamic pressure plate 3 and the bottom cover 112 to prevent the lubricating fluid in the accommodation space S from leaking between the dynamic pressure plate 3 and the bottom cover 112.

綜上所述,本發明各實施例的馬達及其動壓板3藉由於該動壓板3之表面31設有數個動壓溝32,使潤滑流體填充於各該動壓溝32中,可以增加該動壓板3與該止推板22之間的潤滑流體層的有效厚度及支撐力。據此,相較前述習知馬達9的軸92承受壓力或是在轉動過程中產生震 動時,其軸向推力板911與止推板921之間的潤滑流體層厚度將會變薄,甚至產生該軸向推力板911與該止推板921直接接觸的情形。本發明各實施例的馬達能夠有效避免該潤滑流體層變薄,以防止該動壓板3與該止推板22直接接觸,確實具有降低該轉軸21的摩擦扭矩功效。 In summary, the motor and the dynamic pressure plate 3 of the embodiments of the present invention can increase the number of the dynamic pressure grooves 32 by providing a plurality of dynamic pressure grooves 32 on the surface 31 of the dynamic pressure plate 3. The effective thickness and supporting force of the lubricating fluid layer between the dynamic pressure plate 3 and the thrust plate 22. According to this, when the shaft 92 of the conventional motor 9 receives pressure or generates vibration during the rotation, the thickness of the lubricating fluid layer between the axial thrust plate 911 and the thrust plate 921 will become thinner, or even produce A situation where the axial thrust plate 911 is in direct contact with the thrust plate 921. The motor of each embodiment of the present invention can effectively prevent the lubricating fluid layer from becoming thin, so as to prevent the dynamic pressure plate 3 from directly contacting the thrust plate 22, and indeed has the effect of reducing the friction torque of the rotating shaft 21.

再者,本發明各實施例的馬達之動壓板可以包含一板片3a及硬度大於該板片3a之座體3b,該板片3a之表面31可以透過蝕刻或電鑄等方式成形該數個動壓溝32,以達到降低該數個動壓溝32的加工難度及維持該動壓板3的剛性之功效。 Furthermore, the dynamic pressure plate of the motor of each embodiment of the present invention may include a plate 3a and a seat body 3b having a hardness greater than that of the plate 3a. The surface 31 of the plate 3a may be formed by etching or electroforming. The dynamic pressure grooves 32 reduce the processing difficulty of the dynamic pressure grooves 32 and maintain the rigidity of the dynamic pressure plate 3.

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。 Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention. The technical scope protected by the invention, so the scope of protection of the present invention shall be determined by the scope of the appended patent application.

Claims (37)

一種馬達,包含:一基座,設有一個軸承套,該軸承套內部設有一軸承;一轉子,該轉子包含一轉軸及一止推板,該轉軸結合於該軸承,該止推板設置於該轉軸的一端;及一動壓板,該動壓板設置於該軸承套之一側,且該動壓板朝向該止推板,該止推板位於該軸承與該動壓板之間,該動壓板朝向該止推板之一表面設有數個動壓溝。     A motor includes: a base provided with a bearing sleeve, the bearing sleeve is provided with a bearing inside; a rotor including a rotating shaft and a thrust plate, the rotating shaft is combined with the bearing, and the thrust plate is disposed on One end of the rotating shaft; and a dynamic pressure plate, which is disposed on one side of the bearing sleeve, and the dynamic pressure plate faces the thrust plate, the thrust plate is located between the bearing and the dynamic pressure plate, and the dynamic pressure plate faces the There are several dynamic pressure grooves on one surface of the thrust plate.     如申請專利範圍第1項所述馬達,其中,該動壓板中心設有一孔槽。     The motor according to item 1 of the scope of the patent application, wherein the center of the dynamic pressure plate is provided with a hole slot.     如申請專利範圍第2項所述馬達,其中,該轉軸設有該止推板的一端與該孔槽相鄰接。     The motor according to item 2 of the scope of patent application, wherein one end of the rotating shaft provided with the thrust plate is adjacent to the slot.     如申請專利範圍第2項所述馬達,其中,該動壓板朝向該止推板之表面包含一內輪廓及一外輪廓,該內輪廓涵蓋該孔槽,該外輪廓涵蓋該內輪廓,且該外輪廓與該動壓板的外周緣具有一間距,該內輪廓與該外輪廓之間構成一區域,各該動壓溝設置於該區域中。     The motor according to item 2 of the scope of patent application, wherein the surface of the dynamic pressure plate facing the thrust plate includes an inner contour and an outer contour, the inner contour covers the hole and the groove, the outer contour covers the inner contour, and the An outer contour has a distance from an outer peripheral edge of the dynamic pressure plate, and a region is formed between the inner contour and the outer contour, and each of the dynamic pressure grooves is disposed in the region.     如申請專利範圍第4項所述馬達,其中,該止推板朝向該動壓板之一底面具有一外周緣,該外周緣在該轉軸之軸向上涵蓋該外輪廓。     The motor according to item 4 of the scope of patent application, wherein the thrust plate has an outer periphery facing a bottom face of the dynamic pressure plate, and the outer periphery covers the outer contour in the axial direction of the rotating shaft.     如申請專利範圍第4項所述馬達,其中,該止推板朝向該動壓板之一底面具有一內周緣,該內輪廓在該轉軸之軸向上涵蓋該內周緣。     The motor according to item 4 of the patent application, wherein the thrust plate has an inner peripheral edge facing a bottom face of the dynamic pressure plate, and the inner contour covers the inner peripheral edge in the axial direction of the rotating shaft.     如申請專利範圍第2項所述馬達,其中,各該動壓溝具有二側緣,且以該孔槽為中心,各該動壓溝之至少一側緣的部分區段或全部係形成一螺線。     The motor according to item 2 of the scope of patent application, wherein each of the dynamic pressure grooves has two side edges, and the hole groove is the center, and a part or all of at least one side edge of each of the dynamic pressure grooves forms one Spiral.     如申請專利範圍第7項所述馬達,其中,該螺線係為等角螺線。     The motor according to item 7 of the patent application scope, wherein the spiral is an equiangular spiral.     如申請專利範圍第4項所述馬達,其中,各該動壓溝具有二側緣,各該動壓溝包含一第一端部及一第二端部,該二側緣分別連接該第一端部及 該第二端部,該第一端部位於該內輪廓,該第二端部位於該外輪廓。     The motor according to item 4 of the scope of patent application, wherein each of the dynamic pressure grooves has two side edges, each of the dynamic pressure grooves includes a first end portion and a second end portion, and the two side edges are respectively connected to the first end portion. An end portion and the second end portion, the first end portion is located in the inner contour, and the second end portion is located in the outer contour.     如申請專利範圍第9項所述具有止推軸承的馬達,其中,各該動壓溝之至少一側緣的部分區段或全部形成由該第一端部朝該第二端部漸伸之一漸伸線。     The motor with a thrust bearing according to item 9 of the scope of the patent application, wherein at least a part of or at least one side edge of each of the dynamic pressure grooves is formed as one of gradually extending from the first end portion toward the second end portion. Gradually extending.     如申請專利範圍第9項所述馬達,其中,該二側緣的間距由該第一端部朝該第二端部漸增。     According to the motor of claim 9, the distance between the two side edges is gradually increased from the first end portion toward the second end portion.     如申請專利範圍第9項所述馬達,其中,該內輪廓與該外輪廓分別為以該動壓板中心為圓心的圓形。     The motor according to item 9 in the scope of the patent application, wherein the inner contour and the outer contour are respectively circles with a center of the dynamic pressure plate as a circle.     如申請專利範圍第12項所述馬達,其中,該表面包含一分界輪廓該分界輪廓為以該動壓板中心為圓心的圓形,該分界輪廓位於該內輪廓與該外輪廓之間,該內輪廓與該分界輪廓之間構成一第一區域,該分界輪廓與該外輪廓之間構成一第二區域,且以該孔槽為中心,各該動壓溝的至少一側緣在該第一區域中的區段係形成一等角螺線,該至少一側緣在該第二區域中的區段係形成一漸伸線。     According to the motor of claim 12, wherein the surface includes a boundary contour, the boundary contour is a circle with the center of the dynamic pressure plate as a circle, and the boundary contour is located between the inner contour and the outer contour. A first region is formed between the contour and the boundary contour, a second region is formed between the boundary contour and the outer contour, and the hole groove is the center. At least one side edge of each dynamic pressure groove is on the first The sections in the area form an equiangular spiral, and the sections of the at least one side edge in the second area form an involute line.     如申請專利範圍第13項所述馬達,其中,該內輪廓相對該動壓板中心具有一第一半徑r i,該外輪廓相對該動壓板中心具有一第二半徑r o,該分界輪廓相對該動壓板中心之一第三半徑r m可以表示如下式所示:r m=r i+(r o-r i)/K其中,1<K<1.5。 The motor according to item 13 of the patent application, wherein the inner contour has a first radius r i relative to the center of the dynamic plate, the outer contour has a second radius r o relative to the center of the dynamic plate, and the boundary contour is relative to the One of the third radii r m at the center of the movable platen can be expressed as follows: r m = r i + (r o -r i ) / K where 1 <K <1.5. 如申請專利範圍第13項所述馬達,其中,所述等角螺線之角度為25°~35°。     The motor according to item 13 of the scope of patent application, wherein the angle of the equiangular spiral is 25 ° ~ 35 °.     如申請專利範圍第13項所述馬達,其中,所述漸伸線於該外輪廓之端點的切線角度為11°~13°。     The motor according to item 13 of the scope of patent application, wherein a tangent angle of the involute line to an end point of the outer contour is 11 ° to 13 °.     如申請專利範圍第1至16項任一項所述馬達,其中,該數個動壓溝的數量為12~20個。     The motor according to any one of claims 1 to 16, in which the number of the dynamic pressure grooves is 12-20.     如申請專利範圍第17項所述馬達,其中,該數個動壓溝的數量為16個。     The motor according to item 17 of the scope of patent application, wherein the number of the plurality of dynamic pressure grooves is 16.     如申請專利範圍第1至16項任一項所述馬達,其中,各該動壓溝在該轉軸之軸向上的深度為20~30μm。     The motor according to any one of claims 1 to 16, in which the depth of each of the dynamic pressure grooves in the axial direction of the rotating shaft is 20 to 30 μm.     如申請專利範圍第19項所述馬達,其中,各該動壓溝在該轉軸之軸向上的深度為24~26μm。     According to the motor described in claim 19, wherein the depth of each of the dynamic pressure grooves in the axial direction of the rotating shaft is 24-26 μm.     如申請專利範圍第1至16項任一項所述馬達,其中,該軸承套內部可以設有一定位件,該定位件結合於該軸承套的內周壁,且該定位件抵接該軸承。     The motor according to any one of claims 1 to 16, wherein a positioning member may be provided inside the bearing sleeve, the positioning member is coupled to the inner peripheral wall of the bearing sleeve, and the positioning member abuts the bearing.     如申請專利範圍第21項所述馬達,其中,該止推板之一側與該動壓板之表面保持一間距,該止推板之另一側與該軸承或該定位件保持一間距。     According to the motor of claim 21, one side of the thrust plate maintains a distance from the surface of the dynamic pressure plate, and the other side of the thrust plate maintains a distance from the bearing or the positioning member.     如申請專利範圍第1至16項任一項所述馬達,其中,該止推板及該轉軸係經由雷射焊接結合。     The motor according to any one of claims 1 to 16, wherein the thrust plate and the rotating shaft are combined by laser welding.     如申請專利範圍第1至16項任一項所述馬達,其中,該動壓板包含相互結合一板片及座體,該動壓板朝向該止推板之表面係位於該板片,該座體之硬度大於該板片之硬度。     The motor according to any one of claims 1 to 16, wherein the dynamic pressure plate includes a plate and a base body combined with each other, and a surface of the dynamic pressure plate facing the thrust plate is located on the plate body and the base body. The hardness is greater than the hardness of the plate.     如申請專利範圍第24項所述馬達,其中,該板片之表面以蝕刻或電鑄成形該數個動壓溝。     According to the motor of claim 24, wherein the surface of the plate is etched or electroformed to form the plurality of dynamic pressure grooves.     如申請專利範圍第24項所述馬達,其中,該板片為一軟性電路板。     The motor according to item 24 of the scope of patent application, wherein the plate is a flexible circuit board.     如申請專利範圍第24項所述馬達,其中,該座體為金屬材質製成之板體。     The motor according to item 24 of the scope of patent application, wherein the seat is a plate body made of a metal material.     如申請專利範圍第1至16項任一項所述馬達,其中,該動壓板設置於一底蓋上,且一密封環設置於該動壓板及該底蓋之間。     The motor according to any one of claims 1 to 16, wherein the dynamic pressure plate is disposed on a bottom cover, and a seal ring is disposed between the dynamic pressure plate and the bottom cover.     如申請專利範圍第28項任一項所述馬達,其中,該密封環由橡膠或矽膠製成。     The motor according to any one of claim 28, wherein the seal ring is made of rubber or silicone.     一種馬達之動壓板,包含:一板片,該板片之一表面設有以蝕刻或電鑄成形的數個動壓溝;及一座體,該座體之硬度大於該板片之硬度,該板片背向該表面之一側結合於該座體。     A dynamic pressure plate for a motor includes: a plate, one surface of which is provided with several dynamic pressure grooves formed by etching or electroforming; and a body whose hardness is greater than the hardness of the plate. One side of the plate facing away from the surface is bonded to the base.     如申請專利範圍第30項所述馬達之動壓板,其中,該板片中心設有一孔槽。     According to the dynamic pressure plate of the motor according to item 30 of the scope of patent application, wherein the plate is provided with a hole slot in the center.     如申請專利範圍第30項所述馬達之動壓板,其中,該板片為一軟性電路板。     The dynamic pressure plate of the motor according to item 30 of the patent application scope, wherein the plate is a flexible circuit board.     如申請專利範圍第30項所述馬達之動壓板,其中,該座體為金屬材質製成之板體。     According to the dynamic pressure plate of the motor according to item 30 of the patent application scope, wherein the seat is a plate body made of metal material.     如申請專利範圍第30、31、32或33項所述馬達之動壓板,其中,該數個動壓溝的數量為12~20個。     For example, the number of dynamic pressure grooves of the motor is 12 to 20, as described in the patent application scope No. 30, 31, 32 or 33.     如申請專利範圍第34項所述馬達之動壓板,其中,該數個動壓溝的數量為16個。     According to the dynamic pressure plate of the motor according to item 34 of the scope of patent application, the number of the plurality of dynamic pressure grooves is 16.     如申請專利範圍第30、31、32或33項所述馬達之動壓板,其中,各該動壓溝在一軸向上的深度為20~30μm,該軸向垂直該表面。     For example, the dynamic pressure plate of the motor according to item 30, 31, 32, or 33 of the patent application scope, wherein each of the dynamic pressure grooves has a depth of 20-30 μm in one axial direction, and the axial direction is perpendicular to the surface.     如申請專利範圍第36項所述馬達之動壓板,其中,各該動壓溝在該軸向上的深度為24~26μm。     According to the dynamic pressure plate of the motor according to item 36 of the scope of patent application, wherein the depth of each of the dynamic pressure grooves in the axial direction is 24-26 μm.    
TW105128299A 2016-09-01 2016-09-01 Motor and dynamic pressure plate thereof TWI599150B (en)

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TWI705190B (en) * 2019-08-27 2020-09-21 建準電機工業股份有限公司 Bearing system
TWI715450B (en) * 2020-02-25 2021-01-01 建準電機工業股份有限公司 Bearing system and it`s thrust plate
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