TWI769608B - Pneumatic pressure bearing structure and motor thereof - Google Patents

Pneumatic pressure bearing structure and motor thereof Download PDF

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TWI769608B
TWI769608B TW109142904A TW109142904A TWI769608B TW I769608 B TWI769608 B TW I769608B TW 109142904 A TW109142904 A TW 109142904A TW 109142904 A TW109142904 A TW 109142904A TW I769608 B TWI769608 B TW I769608B
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Taiwan
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groove
bearing
dynamic pressure
peripheral surface
bearing structure
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TW109142904A
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Chinese (zh)
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TW202223256A (en
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洪銀樹
張怡鑫
葉記廷
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建準電機工業股份有限公司
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Priority to TW109142904A priority Critical patent/TWI769608B/en
Priority to CN202011472390.4A priority patent/CN114593137B/en
Publication of TW202223256A publication Critical patent/TW202223256A/en
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Publication of TWI769608B publication Critical patent/TWI769608B/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C17/00—Sliding-contact bearings for exclusively rotary movement
    • F16C17/04—Sliding-contact bearings for exclusively rotary movement for axial load only
    • F16C17/045—Sliding-contact bearings for exclusively rotary movement for axial load only with grooves in the bearing surface to generate hydrodynamic pressure, e.g. spiral groove thrust bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0402—Bearings not otherwise provided for using magnetic or electric supporting means combined with other supporting means, e.g. hybrid bearings with both magnetic and fluid supporting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/0408—Passive magnetic bearings
    • F16C32/0423—Passive magnetic bearings with permanent magnets on both parts repelling each other
    • 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
    • H02K7/08—Structural association with bearings

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Sliding-Contact Bearings (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

A pneumatic pressure bearing structure and a motor thereof are provided to solve the problem of poor dynamic pressure caused by insufficient air supply. The pneumatic pressure bearing structure a base with a shaft tube, a bearing combined in the shaft tube, and a rotor having a rotating part rotatably arranged on the bearing. The outer peripheral surface of the rotating part has at least one first dynamic pressure groove and at least one second dynamic pressure groove. The first dynamic pressure groove is not adjacent to upper edge and lower edge of the rotating part, and the second dynamic pressure groove are adjacent to upper edge and lower edge of the rotating part. Wherein, the bearing or/and the shaft tube have at least one vent groove, so that the outside air current connects the vent groove and the at least one first dynamic pressure groove.

Description

氣動壓軸承結構及具有該氣動壓軸承結構之馬達 Pneumatic pressure bearing structure and motor with the same

本發明係關於一種馬達零件及馬達，尤其是一種氣動壓軸承結構及具有該氣動壓軸承結構之馬達。 The present invention relates to a motor part and a motor, especially a pneumatic pressure bearing structure and a motor having the pneumatic pressure bearing structure.

為了減小馬達轉動時造成磨損及降低噪音，氣動壓軸承結構已廣泛應用於馬達中。習知的氣動壓軸承結構可以具有一軸承結合於一軸管內，該軸承可以具有一上端部及一下端部，一轉動件可旋轉地設於該軸承，該轉動件的外周面具有數個動壓溝，該數個動壓溝鄰接該上端部或該下端部；如此，該轉動件相對該軸承旋轉時，外界氣流可以由該上端部及該下端部進入該數個動壓溝，該轉動件與該軸承之間形成一氣壓膜，從而支撐該轉動件的旋轉，使該轉動件在旋轉過程中和該軸承不直接接觸。 In order to reduce the wear and noise caused by the rotation of the motor, the pneumatic pressure bearing structure has been widely used in the motor. The conventional pneumatic pressure bearing structure may have a bearing combined in a shaft tube, the bearing may have an upper end and a lower end, a rotating member is rotatably arranged on the bearing, and the outer peripheral surface of the rotating member has several moving parts. Pressure grooves, the plurality of dynamic pressure grooves are adjacent to the upper end or the lower end; in this way, when the rotating member rotates relative to the bearing, the external air flow can enter the plurality of dynamic pressure grooves from the upper end and the lower end, and the rotation An air pressure film is formed between the component and the bearing, so as to support the rotation of the rotating component, so that the rotating component does not directly contact the bearing during the rotation.

上述習知的氣動壓軸承結構，雖然外界氣流可以由該上端部及該下端部進入該數個動壓溝，然而，該轉動件在該上端部及該下端部之間有大部分的面積都未設有動壓溝，使外界氣流無法對該上端部及該下端部之間的位置供氣，使得供氣仍有不足的情形，因此，導致無法產生足夠的動壓而造成動壓效果不佳。 In the above-mentioned conventional pneumatic bearing structure, although the external air flow can enter the plurality of dynamic pressure grooves from the upper end and the lower end, however, most of the area of the rotating member between the upper end and the lower end is closed. There is no dynamic pressure groove, so that the outside air cannot supply air to the position between the upper end and the lower end, so that the air supply is still insufficient, therefore, the dynamic pressure cannot be generated enough and the dynamic pressure effect is not good. good.

有鑑於此，習知的氣動壓軸承結構確實仍有加以改善之必要。 In view of this, the conventional pneumatic bearing structure still needs to be improved.

為解決上述問題，本發明的目的是提供一種氣動壓軸承結構及具有該氣動壓軸承結構之馬達，係可以提升動壓效果者。 In order to solve the above problems, the purpose of the present invention is to provide a pneumatic pressure bearing structure and a motor having the pneumatic pressure bearing structure, which can improve the dynamic pressure effect.

本發明的次一目的是提供一種氣動壓軸承結構及具有該氣動壓軸承結構之馬達，係可以提升進氣順暢性者。 Another object of the present invention is to provide a pneumatic pressure bearing structure and a motor having the pneumatic pressure bearing structure, which can improve the smoothness of air intake.

本發明的又一目的是提供一種氣動壓軸承結構及具有該氣動壓軸承結構之馬達，係可以提升組裝便利性者。 Another object of the present invention is to provide a pneumatic pressure bearing structure and a motor having the pneumatic pressure bearing structure, which can improve the convenience of assembly.

本發明的再一目的是提供一種氣動壓軸承結構及具有該氣動壓軸承結構之馬達，係可以提升旋轉穩定性者。 Another object of the present invention is to provide a pneumatic pressure bearing structure and a motor having the pneumatic pressure bearing structure, which can improve the rotational stability.

本發明全文所述方向性或其近似用語，例如「前」、「後」、「左」、「右」、「上(頂)」、「下(底)」、「內」、「外」、「側面」等，主要係參考附加圖式的方向，各方向性或其近似用語僅用以輔助說明及理解本發明的各實施例，非用以限制本發明。 The directionality or similar terms used throughout the present disclosure, such as "front", "back", "left", "right", "top (top)", "bottom (bottom)", "inside", "outside" , "side surface", etc., mainly refer to the directions of the attached drawings, each directionality or its similar terms are only used to assist the description and understanding of the various embodiments of the present invention, and are not intended to limit the present invention.

本發明全文所記載的元件及構件使用「一」或「一個」之量詞，僅是為了方便使用且提供本發明範圍的通常意義；於本發明中應被解讀為包括一個或至少一個，且單一的概念也包括複數的情況，除非其明顯意指其他意思。 The use of the quantifier "a" or "an" for the elements and components described throughout the present invention is only for convenience and provides a general meaning of the scope of the present invention; in the present invention, it should be construed as including one or at least one, and a single The concept of also includes the plural case unless it is obvious that it means otherwise.

本發明全文所述「結合」、「組合」或「組裝」等近似用語，主要包含連接後仍可不破壞構件地分離，或是連接後使構件不可分離等型態，係本領域中具有通常知識者可以依據欲相連之構件材質或組裝需求予以選擇者。 Similar terms such as "combined", "combined" or "assembled" mentioned in the whole text of the present invention mainly include the components that can be separated without destroying the components after the connection, or the components can not be separated after being connected, which are common knowledge in the field. It can be selected according to the material of the components to be connected or the assembly requirements.

本發明的氣動壓軸承結構，包含：一基座，具有一軸管；一軸承，結合於該軸管內；及一轉子，具有一轉動件可旋轉地設於該軸承，該轉動件的外周面具有至少一第一動壓溝及至少一第二動壓溝，該第一動壓溝未鄰 接該轉動件的上端緣及下端緣，該第二動壓溝鄰接該轉動件的上端緣或下端緣；其中，該軸承或/及該軸管具有至少一通氣溝，該通氣溝的一端位於該軸承的其中一軸向端部，該通氣溝的另一端連通該第一動壓溝，使外界氣流連通該通氣溝與該至少一第一動壓溝。 The pneumatic pressure bearing structure of the present invention comprises: a base with a shaft tube; a bearing integrated in the shaft tube; and a rotor with a rotating member rotatably disposed on the bearing, the outer peripheral surface of the rotating member There is at least one first dynamic pressure groove and at least one second dynamic pressure groove, and the first dynamic pressure groove is not adjacent to the Connecting the upper end edge and the lower end edge of the rotating member, the second dynamic pressure groove is adjacent to the upper end edge or the lower end edge of the rotating member; wherein, the bearing or/and the shaft tube have at least one ventilation groove, and one end of the ventilation groove is located at One of the axial ends of the bearing and the other end of the ventilation groove communicate with the first dynamic pressure groove, so that the external air flow communicates with the ventilation groove and the at least one first dynamic pressure groove.

本發明的馬達，包含：一定子，環繞該軸管設置；及一前述的氣動壓軸承結構，該轉子具有一永久磁鐵對位於該定子。 The motor of the present invention includes: a stator disposed around the shaft tube; and the aforementioned pneumatic pressure bearing structure, and the rotor has a pair of permanent magnets positioned on the stator.

據此，本發明的氣動壓軸承結構及具有該氣動壓軸承結構之馬達，利用該軸承或/及該軸管具有至少一通氣溝，該通氣溝可以連通該至少一第一動壓溝與外界；如此，外界的氣流可以經由該通氣溝對設於該上端緣及該下端緣之間的第一動壓溝供氣，以及外界的氣流可以經由該上端緣或該下端緣進入該第二動壓溝，使該轉動件與該軸承之間可以形成均勻穩定且強大的氣壓膜，以提供足夠的動壓力，係具有可以提升動壓效果的功效。此外，該結構簡易而便於製造，且外界的氣流可以直接從該其中一軸向端部進入該通氣溝，係具有提升進氣順暢性的功效。 Accordingly, the pneumatic pressure bearing structure and the motor having the pneumatic pressure bearing structure of the present invention utilize the bearing or/and the axle tube to have at least one air channel, and the air channel can communicate with the at least one first dynamic pressure channel and the outside world. In this way, the air flow from the outside can supply air to the first dynamic pressure ditch arranged between the upper end edge and the lower end edge through the ventilation groove, and the air flow from the outside can enter the second dynamic pressure through the upper end edge or the lower end edge. The pressure groove enables a uniform, stable and strong air pressure film to be formed between the rotating member and the bearing, so as to provide sufficient dynamic pressure, which has the effect of enhancing the dynamic pressure effect. In addition, the structure is simple and easy to manufacture, and the air flow from the outside can directly enter the ventilation groove from one of the axial ends, which has the effect of improving the smoothness of the air intake.

其中，該轉動件的外周面可以具有一環槽連通該第一動壓溝，該通氣溝可以連通該環槽以便對該第一動壓溝供氣。如此，該結構簡易而便於製造，且外界的氣流可以經由該環槽進入該第一動壓溝，係具有提升進氣順暢性的功效。 Wherein, the outer peripheral surface of the rotating member may have an annular groove communicating with the first dynamic pressure groove, and the ventilation groove may communicate with the annular groove so as to supply air to the first dynamic pressure groove. In this way, the structure is simple and easy to manufacture, and the external air flow can enter the first dynamic pressure groove through the annular groove, which has the effect of improving the smoothness of the air intake.

其中，該通氣溝可以凹設於該軸承的外周面，該通氣溝可以由該軸承的一貫孔對位及連通該第一動壓溝。如此，該結構簡易而便於製造，且外界的氣流可以經由該軸承的外周面進入該第一動壓溝，係具有提升進氣順暢性的功效。 Wherein, the ventilation groove can be recessed on the outer peripheral surface of the bearing, and the ventilation groove can be aligned with the through hole of the bearing and communicate with the first dynamic pressure groove. In this way, the structure is simple and easy to manufacture, and the external air flow can enter the first dynamic pressure groove through the outer peripheral surface of the bearing, which has the effect of improving the smoothness of air intake.

其中，該通氣溝可以貫穿該軸承的內周面與外周面。如此，該結構簡易而便於製造，且外界的氣流可以經由該軸承的內周面與外周面進入 該第一動壓溝，係具有提升進氣順暢性的功效。 Wherein, the ventilation groove may penetrate through the inner peripheral surface and the outer peripheral surface of the bearing. In this way, the structure is simple and easy to manufacture, and the external air flow can enter through the inner and outer peripheral surfaces of the bearing The first dynamic pressure groove has the effect of improving the smoothness of air intake.

其中，該通氣溝可以凹設於該軸承的內周面。如此，該結構簡易而便於製造，且外界的氣流可以經由該軸承的內周面進入該第一動壓溝，係具有提升進氣順暢性的功效。 Wherein, the ventilation groove may be recessed on the inner peripheral surface of the bearing. In this way, the structure is simple and easy to manufacture, and the external air flow can enter the first dynamic pressure groove through the inner peripheral surface of the bearing, which has the effect of improving the smoothness of the air intake.

其中，該軸承可以具有一貫孔貫穿該軸承的內周面與外周面，該軸管的內周面可以具有一進氣道，該進氣道與該貫孔可以共同構成該通氣溝。如此，該結構簡易而便於製造，且外界的氣流可以經由該進氣道、該貫孔進入該第一動壓溝，係具有提升進氣順暢性的功效。 Wherein, the bearing may have a through hole passing through the inner peripheral surface and the outer peripheral surface of the bearing, the inner peripheral surface of the shaft tube may have an air inlet, and the air inlet and the through hole may together form the ventilation groove. In this way, the structure is simple and easy to manufacture, and the external air flow can enter the first dynamic pressure groove through the air inlet port and the through hole, which has the effect of improving the smoothness of air intake.

其中，該轉動件的外周面可以具有一環槽連通該第一動壓溝，該通氣溝的二端分別位於該軸承的二軸向端部，該軸承可以具有一貫孔對位該環槽並連通該通氣溝。如此，該結構簡易而便於製造，且外界的氣流可以從該二軸向端部進入該通氣溝，使該通氣溝可以對該第一動壓溝提供更多的動壓力，係具有進一步提升動壓效果的功效。 Wherein, the outer peripheral surface of the rotating member may have a ring groove to communicate with the first dynamic pressure groove, the two ends of the air groove are respectively located at the two axial ends of the bearing, and the bearing may have a through hole to align the ring groove and communicate with it. the vent. In this way, the structure is simple and easy to manufacture, and the air flow from the outside can enter the air groove from the two axial ends, so that the air groove can provide more dynamic pressure to the first dynamic pressure groove, which has a further lifting power. The efficacy of the pressure effect.

其中，該轉動件的外周面可以具有一環槽連通該第一動壓溝，該軸承的內周面可以凹設有一環溝，該環溝與該轉子的環槽徑向相對，該通氣溝可以連通該環溝。如此，該結構簡易而便於製造，且外界的氣流可以依序由該通氣溝、該環溝、該環槽進入該第一動壓溝，可以使氣流進入更順利，係具有進一步提升進氣順暢性的功效。 Wherein, the outer peripheral surface of the rotating member may have a ring groove communicating with the first dynamic pressure groove, the inner peripheral surface of the bearing may be recessed with a ring groove, the ring groove is radially opposite to the ring groove of the rotor, and the ventilation groove may be Connect the ring groove. In this way, the structure is simple and easy to manufacture, and the external air flow can enter the first dynamic pressure groove from the ventilation groove, the annular groove, and the annular groove in sequence, which can make the air flow enter more smoothly, which can further improve the smoothness of the air intake. Sexual efficacy.

其中，該軸管內具有一第一磁性件，該轉子具有一第二磁性件位於該軸管內並徑向對位於該第一磁性件。如此，該轉動件較佳可以維持騰空旋轉，同時還可以抑制該轉動件的軸向位移，係具有提升旋轉穩定性的功效。 Wherein, the shaft tube has a first magnetic member, and the rotor has a second magnetic member located in the shaft tube and radially opposite to the first magnetic member. In this way, the rotating member can preferably maintain the rotation in the air, and at the same time can restrain the axial displacement of the rotating member, which has the effect of improving the rotation stability.

其中，該轉動件可以具有一中心軸及連接於該中心軸外周面的一擴徑環部，該第一動壓溝位於該擴徑環部，該轉子可以具有一第二磁性件 位於該中心軸外周面。如此，該結構簡易而便於組裝，係具有提升組裝便利性的功效。 Wherein, the rotating member may have a central shaft and a diameter-expanding ring portion connected to the outer peripheral surface of the central shaft, the first dynamic pressure groove is located on the diameter-expanding ring portion, and the rotor may have a second magnetic member on the outer peripheral surface of the central axis. In this way, the structure is simple and easy to assemble, which has the effect of improving the convenience of assembling.

其中，該中心軸與該擴徑環部可以一體成形相連接。如此，該中心軸與該擴徑環部可以穩固相結合，係具有提升該轉動件的結構強度的功效。 Wherein, the central shaft and the diameter-expanding ring portion can be integrally formed and connected. In this way, the central shaft and the diameter-expanding ring portion can be stably combined, which has the effect of enhancing the structural strength of the rotating member.

其中，該轉動件可以具有一擴徑環部，該上端緣及該下端緣位於該擴徑環部，該上端緣及該下端緣係可以形成導角。如此，該結構簡易而便於製造，且外界的氣流可易於經由該上端緣或該下端緣進入該第二動壓溝，係具有提升動壓效果的功效。 Wherein, the rotating member may have a diameter-expanding ring portion, the upper end edge and the lower end edge are located in the diameter-expanding ring portion, and the upper end edge and the lower end edge may form a chamfering angle. In this way, the structure is simple and easy to manufacture, and the external air flow can easily enter the second dynamic pressure groove through the upper end edge or the lower end edge, which has the effect of enhancing the dynamic pressure effect.

其中，該軸承的至少一軸向端部可以具有一隙縫部。如此，該隙縫部係可用以防止進氣被堵住，係具有提升進氣順暢性的功效。 Wherein, at least one axial end portion of the bearing may have a slit portion. In this way, the slit portion can be used to prevent the intake air from being blocked, and has the effect of improving the smoothness of the intake air.

本發明的氣動壓軸承結構可以另包含一扣環，該轉動件可以貫穿該扣環，該扣環可以伸入該轉動件的一防脫凹槽。如此，該轉動件旋轉時，係可以進一步限制該轉動件的軸向位移，係具有避免該轉動件脫離該軸承的功效。 The pneumatic pressure bearing structure of the present invention may further include a retaining ring, the rotating member may penetrate through the retaining ring, and the retaining ring may extend into a disengagement prevention groove of the rotating member. In this way, when the rotating member rotates, the axial displacement of the rotating member can be further restricted, which has the effect of preventing the rotating member from separating from the bearing.

本發明的氣動壓軸承結構可以另包含一墊片結合該軸承，該墊片可以位於該轉動件的一擴徑環部與該扣環之間。如此，該墊片可用以壓抵該扣環，從而可以固定該扣環的位置，係具有避免該扣環脫離該防脫凹槽的功效。 The pneumatic pressure bearing structure of the present invention may further comprise a gasket to combine with the bearing, and the gasket may be located between an expanding ring portion of the rotating member and the retaining ring. In this way, the gasket can be used to press against the retaining ring, so as to fix the position of the retaining ring, which has the effect of preventing the retaining ring from detaching from the anti-drop groove.

本發明的氣動壓軸承結構可以另包含一扣環，該軸管內可以具有一第一磁性件，該第一磁性件與該軸承分別抵接該扣環的二端，該扣環的一通孔孔徑可以小於該轉動件的最大徑寬。如此，該轉動件旋轉時，係可以進一步限制該轉動件的軸向位移，係具有避免該轉動件脫離該軸承的功效。 The pneumatic pressure bearing structure of the present invention may further include a retaining ring, the shaft tube may have a first magnetic member, the first magnetic member and the bearing are respectively abutted against two ends of the retaining ring, a through hole of the retaining ring The aperture may be smaller than the maximum diameter of the rotating member. In this way, when the rotating member rotates, the axial displacement of the rotating member can be further restricted, which has the effect of preventing the rotating member from separating from the bearing.

本發明的氣動壓軸承結構可以另包含一墊片，該第二磁性件與 該轉動件的一擴徑環部可以分別抵接該墊片的二端。如此，該墊片可用以將該第二磁性件與該擴徑環部隔開，使該扣環可易於伸入該第二磁性件與該擴徑環部之間的部位，係具有提升組裝便利性的功效。 The pneumatic pressure bearing structure of the present invention may further comprise a washer, and the second magnetic member is connected to A diameter-expanding ring portion of the rotating member can respectively abut against two ends of the washer. In this way, the gasket can be used to separate the second magnetic member from the diameter-expanding ring portion, so that the retaining ring can easily protrude into the position between the second magnetic member and the diameter-expanding ring portion, which has the advantages of lifting assembly The effect of convenience.

〔本發明〕 〔this invention〕

1:基座 1: Base

11:基板 11: Substrate

111:進氣道 111: Intake port

12:軸管 12: Axle tube

12a:內周面 12a: inner peripheral surface

13:第一磁性件 13: The first magnetic piece

2:軸承 2: Bearing

2a:內周面 2a: inner peripheral surface

2b:外周面 2b: Outer peripheral surface

2c:軸向端部 2c: Axial end

21:貫孔 21: Through hole

22:環溝 22: Ring groove

23:隙縫部 23: Slot part

3:轉子 3: Rotor

3a:轉動件 3a: Turning parts

3b:第二磁性件 3b: Second magnetic piece

3c:殼體 3c: Shell

3d:永久磁鐵 3d: permanent magnet

30:外周面 30: Outer peripheral surface

31:中心軸 31: Center shaft

31a:外周面 31a: Peripheral surface

32:擴徑環部 32: Expanding ring part

32a:上端緣 32a: upper edge

32b:下端緣 32b: Lower edge

33a:第一動壓溝 33a: The first dynamic pressure groove

33b:第二動壓溝 33b: Second dynamic pressure groove

34:環槽 34: Ring groove

35:防脫凹槽 35: Anti-drop groove

4:定子 4: Stator

5:扣環 5: Buckle

6:墊片 6: Gasket

D1:孔徑 D1: Aperture

D2:最大徑寬 D2: maximum diameter and width

G:通氣溝 G: Ventilation ditch

〔第1圖〕本發明第一實施例結合定子的分解立體圖。 [FIG. 1] An exploded perspective view of the combined stator according to the first embodiment of the present invention.

〔第2圖〕如第1圖所示的局部分解立體圖。 [Fig. 2] A partially exploded perspective view as shown in Fig. 1.

〔第3圖〕本發明第一實施例結合定子的組合剖面圖。 [FIG. 3] A combined cross-sectional view of the stator in combination with the first embodiment of the present invention.

〔第4圖〕本發明第二實施例的分解立體圖。 [FIG. 4] An exploded perspective view of a second embodiment of the present invention.

〔第5圖〕本發明第二實施例結合定子的組合剖面圖。 [FIG. 5] A combined cross-sectional view of a second embodiment of the present invention combined with a stator.

〔第6圖〕本發明第三實施例結合定子的組合剖面圖。 [FIG. 6] A combined cross-sectional view of the stator in combination with the third embodiment of the present invention.

〔第7圖〕本發明第四實施例結合定子的組合剖面圖。 [FIG. 7] A combined sectional view of the fourth embodiment of the present invention combined with the stator.

〔第8圖〕本發明第五實施例結合定子的組合剖面圖。 [FIG. 8] A combined sectional view of the fifth embodiment of the present invention combined with the stator.

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1圖所示，其係本發明氣動壓軸承結構的第一實施例，係包含一基座1、一軸承2及一轉子3，該軸承2結合於該基座1，該轉子3可旋轉地設於該軸承2。 In order to make the above-mentioned and other objects, features and advantages of the present invention more obvious and easy to understand, the preferred embodiments of the present invention are exemplified below, and are described in detail as follows in conjunction with the accompanying drawings: please refer to Figure 1, It is the first embodiment of the pneumatic pressure bearing structure of the present invention, which includes a base 1 , a bearing 2 and a rotor 3 , the bearing 2 is combined with the base 1 , and the rotor 3 is rotatably arranged on the bearing 2 .

該基座1具有一基板11及一軸管12，該軸管12設置於該基板11，該基板11與該軸管12可以塑膠材質一體射出成型而相結合；在本實施例中，該軸管12可以係為金屬材質，使該軸管12與該基板11能夠利用拆 裝的方式相互結合，同時提升該軸管12的結構強度。又，該基座1可以設有一第一磁性件13，該第一磁性件13可以位於該軸管12內且遠離該基板11，該第一磁性件13可以形成環狀。 The base 1 has a base plate 11 and a shaft tube 12 , the shaft tube 12 is disposed on the base plate 11 , and the base plate 11 and the shaft tube 12 can be combined by integral injection molding of plastic material; in this embodiment, the shaft tube 12 can be made of metal material, so that the shaft tube 12 and the base plate 11 can be disassembled using The ways of mounting are combined with each other, and at the same time, the structural strength of the shaft tube 12 is improved. In addition, the base 1 may be provided with a first magnetic member 13 , the first magnetic member 13 may be located in the shaft tube 12 and away from the substrate 11 , and the first magnetic member 13 may be formed in a ring shape.

請參照第2、3圖所示，該軸承2位於該軸管12內，該軸承2可以具有一內周面2a與一外周面2b，該軸承2係可以由該外周面2b貼接於該軸管12，該內周面2a與該外周面2b可以連接二軸向端部2c。該軸承2可以具有一貫孔21，該貫孔21貫穿該內周面2a與該外周面2b，該貫孔21係以不會與該二軸向端部2c連通為原則，該貫孔21的位置本發明不加以限制；在本實施例中，該貫孔21係位於該二軸向端部2c之間的中間位置。 Referring to Figures 2 and 3, the bearing 2 is located in the shaft tube 12, the bearing 2 may have an inner peripheral surface 2a and an outer peripheral surface 2b, and the bearing 2 can be attached to the outer peripheral surface 2b by the outer peripheral surface 2b. In the shaft tube 12, the inner peripheral surface 2a and the outer peripheral surface 2b can be connected to two axial end portions 2c. The bearing 2 may have a through hole 21 which penetrates through the inner peripheral surface 2a and the outer peripheral surface 2b. The through hole 21 is based on the principle of not communicating with the two axial ends 2c. The position of the present invention is not limited; in this embodiment, the through hole 21 is located in the middle position between the two axial end portions 2c.

請參照第2圖所示，此外，該軸承2可以具有一環溝22，該環溝22凹設於該軸承2的內周面2a，該環溝22可以連通該貫孔21；該環溝22的型態本發明不加以限制，例如：該環溝22可以係由數個不連續的凹溝所組成，在本實施例中，該環溝22係以形成一整個環來做說明，該環溝22可以位於該二軸向端部2c之間的中間位置，且該環溝22的局部可以與該貫孔21重疊。又，該軸承2具有至少一隙縫部23，該隙縫部23可以位於較鄰近該基板11的軸向端部2c上，該隙縫部23係可用以防止進氣被堵住。 Please refer to FIG. 2, in addition, the bearing 2 may have a ring groove 22, the ring groove 22 is recessed on the inner peripheral surface 2a of the bearing 2, the ring groove 22 can communicate with the through hole 21; the ring groove 22 The present invention is not limited to the type of groove 22. For example, the ring groove 22 can be composed of several discontinuous grooves. In this embodiment, the ring groove 22 is described as forming a whole ring. The groove 22 may be located in the middle position between the two axial end portions 2c, and a part of the annular groove 22 may overlap with the through hole 21 . In addition, the bearing 2 has at least one slit portion 23, the slit portion 23 can be located on the axial end portion 2c of the base plate 11, and the slit portion 23 can be used to prevent the intake air from being blocked.

請參照第2、3圖所示，特別說明的是，該軸承2或/及該軸管12具有至少一通氣溝G，該通氣溝G係以能夠連通外界為原則，該通氣溝G的型態，本發明不加以限制，亦不以本實施例所揭露之圖式為限；在本實施例中，該通氣溝G的數量可以為數個，該通氣溝G可以凹設於該軸承2的外周面2b，該通氣溝G的一端可以位於鄰近該基板11的該軸向端部2c，該通氣溝G的另一端可以位於該二軸向端部2c之間，且該通氣溝G可以連通該軸承2的貫孔21與環溝22。 Please refer to Figures 2 and 3, it is particularly noted that the bearing 2 or/and the shaft tube 12 have at least one air groove G, the air groove G is based on the principle of being able to communicate with the outside world, the type of the air groove G is state, the present invention is not limited, and is not limited to the drawings disclosed in this embodiment; in this embodiment, the number of the air grooves G can be several, and the air grooves G can be recessed in the bearing 2 Outer peripheral surface 2b, one end of the air groove G can be located adjacent to the axial end 2c of the substrate 11, the other end of the air groove G can be located between the two axial ends 2c, and the air groove G can communicate with The through hole 21 and the annular groove 22 of the bearing 2 are provided.

該轉子3具有一轉動件3a可旋轉地設於該軸承2內，該轉動 件3a可以具有一中心軸31及一擴徑環部32，該擴徑環部32連接於該中心軸31外周面31a，該擴徑環部32可以具有一上端緣32a及一下端緣32b，本發明不限制該上端緣32a及該下端緣32b的形狀，在本實施例中，該上端緣32a及該下端緣32b係以形成導角來做說明。 The rotor 3 has a rotating member 3a rotatably disposed in the bearing 2, the rotating The member 3a may have a central shaft 31 and a diameter-expanding ring portion 32, the diameter-expanding ring portion 32 is connected to the outer peripheral surface 31a of the central shaft 31, and the diameter-expanding ring portion 32 may have an upper end edge 32a and a lower end edge 32b, The present invention does not limit the shapes of the upper end edge 32a and the lower end edge 32b. In this embodiment, the upper end edge 32a and the lower end edge 32b are described as forming a chamfer.

請參照第2圖所示，該轉動件3a可以具有至少一第一動壓溝33a，該至少一第一動壓溝33a可以位於該擴徑環部32的外周面30，該至少一第一動壓溝33a未鄰接該第一動壓溝33a的設置面的上緣(即前述的該上端緣32a)及下緣(即前述的該下端緣32b)，該第一動壓溝33a可以呈彎弧狀，該通氣溝G可以藉由該貫孔21連通該第一動壓溝33a，使該通氣溝G可以對該第一動壓溝33a供氣，該貫孔21可以與該環槽34直接對位或形成錯位，本發明不加以限制；本實施例的該貫孔21係與該環槽34直接對位。又，在本實施例中，該第一動壓溝33a的數量可以為數個，以提供適當的動壓效果。又，該轉動件3a可以具有至少一第二動壓溝33b，該至少一第二動壓溝33b可以位於該擴徑環部32的外周面30，該第二動壓溝33b可以鄰接該第二動壓溝33b的設置面的上緣(即前述的該上端緣32a)或下緣(即前述的該下端緣32b)，使外界的氣流可以經由該上端緣32a或該下端緣32b進入該第二動壓溝33b；在本實施例中，該第二動壓溝33b的數量係以數個來做說明。 Referring to FIG. 2, the rotating member 3a may have at least one first dynamic pressure groove 33a, the at least one first dynamic pressure groove 33a may be located on the outer peripheral surface 30 of the diameter-enlarging ring portion 32, the at least one first dynamic pressure groove 33a The dynamic pressure groove 33a is not adjacent to the upper edge (ie the aforementioned upper end edge 32a ) and the lower edge (ie the aforementioned lower end edge 32b ) of the setting surface of the first dynamic pressure groove 33a, the first dynamic pressure groove 33a may be Curved, the ventilation groove G can communicate with the first dynamic pressure groove 33a through the through hole 21, so that the ventilation groove G can supply air to the first dynamic pressure groove 33a, the through hole 21 can be connected with the annular groove 34 is directly aligned or dislocated, which is not limited in the present invention; the through hole 21 in this embodiment is directly aligned with the annular groove 34 . In addition, in this embodiment, the number of the first dynamic pressure grooves 33a may be several to provide a proper dynamic pressure effect. In addition, the rotating member 3a may have at least one second dynamic pressure groove 33b, the at least one second dynamic pressure groove 33b may be located on the outer peripheral surface 30 of the diameter-expanding ring portion 32, and the second dynamic pressure groove 33b may be adjacent to the first dynamic pressure groove 33b. The upper edge (that is, the aforementioned upper end edge 32a ) or the lower edge (that is, the aforementioned lower end edge 32b ) of the setting surface of the two dynamic pressure grooves 33b allows the outside air to enter the The second dynamic pressure grooves 33b; in this embodiment, the number of the second dynamic pressure grooves 33b is described as several.

請參照第1、3圖所示，該轉動件3a可以具有一環槽34，該環槽34可以位於該擴徑環部32的外周面30；該環槽34的型態本發明不加以限制，例如：該環槽34可以係由數個不連續的凹槽所組成，在本實施例中，該環槽34係形成一整個環來做說明。該環槽34可以與該軸承2的環溝22徑向相對，該環槽34可以連通該第一動壓溝33a，且該通氣溝G可以連通該環槽34以便對該第一動壓溝33a供氣。該轉動件3a可以具有一防脫凹槽35，該防脫凹槽35可以位於該中心軸31且鄰近該基板11。 Referring to Figures 1 and 3, the rotating member 3a may have a ring groove 34, and the ring groove 34 may be located on the outer peripheral surface 30 of the diameter-expanding ring portion 32; the shape of the ring groove 34 is not limited in the present invention. For example, the annular groove 34 may be composed of several discontinuous grooves. In this embodiment, the annular groove 34 is described as forming a whole ring. The annular groove 34 can be diametrically opposite to the annular groove 22 of the bearing 2 , the annular groove 34 can communicate with the first dynamic pressure groove 33a, and the ventilation groove G can communicate with the annular groove 34 so that the first dynamic pressure groove 33a gas supply. The rotating member 3 a may have a disengagement-preventing groove 35 , and the disengagement-preventing groove 35 may be located on the central axis 31 and adjacent to the base plate 11 .

此外，該轉子3可以具有一第二磁性件3b，該第二磁性件3b位於該軸管12內，該第二磁性件3b可以形成環狀，該第二磁性件3b較佳可以貼接該中心軸31外周面31a，該第二磁性件3b可以隨該轉動件3a轉動，且該第二磁性件3b可以徑向對位於該基座1的第一磁性件13；藉由該第二磁性件3b與該第一磁性件13磁性相反而形成一磁力中心，使該轉動件3a偏離時可以被該磁力中心拉回並維持相同位置轉動。 In addition, the rotor 3 can have a second magnetic member 3b, the second magnetic member 3b is located in the shaft tube 12, the second magnetic member 3b can be formed in a ring shape, and the second magnetic member 3b can preferably be attached to the On the outer peripheral surface 31a of the central axis 31, the second magnetic member 3b can rotate with the rotating member 3a, and the second magnetic member 3b can radially face the first magnetic member 13 of the base 1; The member 3b is magnetically opposite to the first magnetic member 13 to form a magnetic force center, so that when the rotating member 3a deviates, it can be pulled back by the magnetic force center and rotate at the same position.

請參照第3圖所示，其係具有上述實施例氣動壓軸承結構的一馬達，該馬達包含一定子4，該定子4結合該基座1以環繞該軸管12設置，該定子4可以為各種能夠驅使該轉子3旋轉的結構設計。本實施例可選擇將該定子4套設結合於該軸管12的外周面。 Please refer to FIG. 3, which is a motor with the pneumatic pressure bearing structure of the above-mentioned embodiment. The motor includes a stator 4. The stator 4 is combined with the base 1 to surround the shaft tube 12. The stator 4 can be Various structural designs that can drive the rotor 3 to rotate. In this embodiment, the stator 4 can be optionally sleeved and combined with the outer peripheral surface of the shaft tube 12 .

詳言之，該轉子3可以具有一殼體3c連接於該中心軸31，本發明不限制該殼體3c的材質與該殼體3c連接該中心軸31的結構及方式。舉例而言，該殼體3c可以射出包覆結合該中心軸31，或是以緊配或雷射銲接結合等方式結合該中心軸31。在本實施例中，該殼體3c可以與該中心軸31緊配相結合，使該殼體3c與該中心軸31可穩固結合。該轉子3還可以具有一永久磁鐵3d結合於該殼體3c的內周面，該永久磁鐵3d可例如為一磁性環或由數個磁塊組成，本發明不加以限制。該永久磁鐵3d對位於該定子4，且該永久磁鐵3d與該定子4之間可以形成一氣隙。 Specifically, the rotor 3 may have a casing 3c connected to the central shaft 31 . The present invention does not limit the material of the casing 3c and the structure and manner of connecting the casing 3c to the central shaft 31 . For example, the casing 3c can be combined with the central shaft 31 by injection molding, or can be combined with the central shaft 31 by means of tight fitting or laser welding. In this embodiment, the housing 3c can be tightly coupled with the central shaft 31, so that the housing 3c and the central shaft 31 can be firmly combined. The rotor 3 may also have a permanent magnet 3d coupled to the inner peripheral surface of the housing 3c. The permanent magnet 3d may be, for example, a magnetic ring or composed of several magnet blocks, which is not limited in the present invention. The permanent magnets 3d are paired on the stator 4, and an air gap can be formed between the permanent magnets 3d and the stator 4. As shown in FIG.

本發明氣動壓軸承結構還可以另包含一扣環5，該轉動件3a的中心軸31可以貫穿該扣環5，該扣環5可以伸入該轉動件3a的防脫凹槽35；如此，該轉動件3a旋轉時，係可以進一步限制該轉動件3a的軸向位移，以避免該轉動件3a脫離該軸承2。 The pneumatic pressure bearing structure of the present invention may further comprise a retaining ring 5, the central axis 31 of the rotating member 3a can penetrate through the retaining ring 5, and the retaining ring 5 can extend into the anti-falling groove 35 of the rotating member 3a; in this way, When the rotating member 3a rotates, the axial displacement of the rotating member 3a can be further restricted to prevent the rotating member 3a from being separated from the bearing 2 .

本發明氣動壓軸承結構還可以另包含一墊片6結合該軸承2，該墊片6位於該轉動件3a的一擴徑環部32與該扣環5之間，該墊片6可用 以壓抵該扣環5，從而可以固定該扣環5的位置。 The pneumatic pressure bearing structure of the present invention may further comprise a gasket 6 combined with the bearing 2, the gasket 6 is located between a diameter expansion ring portion 32 of the rotating member 3a and the retaining ring 5, the gasket 6 can be used to press against the retaining ring 5 , so that the position of the retaining ring 5 can be fixed.

本實施例的氣動壓軸承結構可以在該轉動件3a旋轉時，外界的氣流可以經由該數個通氣溝G進入該環槽34，使該數個通氣溝G可以對位於該上端緣32a及該下端緣32b之間的第一動壓溝33a供氣，以及外界的氣流可以經由該上端緣32a或該下端緣32b進入該第二動壓溝33b，該轉動件3a與該軸承2之間可以形成均勻穩定且強大的氣壓膜，以提供足夠的動壓力，係可以具有提升動壓效果的作用，使該轉動件3a可以維持順暢旋轉。此外，由於該轉子3的第二磁性件3b徑向對位於該基座1的第一磁性件13；如此，該轉動件3a較佳維持騰空轉動，同時還可以抑制該轉動件3a的軸向位移。 In the pneumatic pressure bearing structure of this embodiment, when the rotating member 3a rotates, the external air flow can enter the annular groove 34 through the plurality of air grooves G, so that the plurality of air grooves G can face the upper edge 32a and the The first dynamic pressure groove 33a between the lower end edges 32b supplies air, and the air flow from the outside can enter the second dynamic pressure groove 33b through the upper end edge 32a or the lower end edge 32b, and between the rotating member 3a and the bearing 2 A uniform, stable and powerful air pressure film is formed to provide sufficient dynamic pressure, which can enhance the dynamic pressure effect, so that the rotating member 3a can maintain smooth rotation. In addition, since the second magnetic member 3b of the rotor 3 is radially opposed to the first magnetic member 13 of the base 1; in this way, the rotating member 3a preferably maintains the air rotation, and at the same time, the axial direction of the rotating member 3a can be restrained displacement.

請參照第4、5圖所示，其係本發明氣動壓軸承結構的第二實施例，該通氣溝G可以貫穿該軸承2的內周面2a與外周面2b，且該通氣溝G的一端可以位於該基板11的該軸向端部2c，如此，該結構簡易而便於製造，係具有降低製造成本的作用。且外界的氣流可以直接從鄰近該基板11的該軸向端部2c經由該數個通氣溝G進入該環槽34，使該數個通氣溝G可易於對設於該上端緣32a及該下端緣32b之間的第一動壓溝33a供氣，該轉動件3a與該軸承2之間可以形成均勻穩定且強大的氣壓膜，以提供足夠的動壓力，係可以具有提升動壓效果的作用。 Please refer to Figures 4 and 5, which are the second embodiment of the pneumatic pressure bearing structure of the present invention, the air groove G can penetrate the inner peripheral surface 2a and the outer peripheral surface 2b of the bearing 2, and one end of the air groove G It can be located at the axial end portion 2c of the base plate 11, so that the structure is simple and easy to manufacture, which has the effect of reducing the manufacturing cost. And the external air flow can directly enter the annular groove 34 from the axial end portion 2c adjacent to the substrate 11 through the plurality of air grooves G, so that the plurality of air grooves G can be easily opposite to the upper end edge 32a and the lower end. The first dynamic pressure groove 33a between the edges 32b supplies air, and a uniform, stable and strong air pressure film can be formed between the rotating member 3a and the bearing 2 to provide sufficient dynamic pressure, which can improve the dynamic pressure effect. .

此外，該扣環5可以結合於該的防脫凹槽35的外周面，該墊片6結合該軸承2並位於擴徑環部32與該扣環5之間；如此，該轉動件3a旋轉時，該扣環5可以限制該轉動件3a的軸向位移，以避免該轉動件3a脫離該軸承2。 In addition, the retaining ring 5 can be combined with the outer peripheral surface of the anti-separation groove 35, and the washer 6 is combined with the bearing 2 and is located between the expanding ring portion 32 and the retaining ring 5; in this way, the rotating member 3a rotates , the retaining ring 5 can limit the axial displacement of the rotating member 3 a to prevent the rotating member 3 a from being separated from the bearing 2 .

請參照第6圖所示，其係本發明氣動壓軸承結構的第三實施例，該通氣溝G可以凹設於該軸承2的內周面2a，且該通氣溝G的一端可以 位於該基板11的該軸向端部2c，如此，該結構簡易而便於製造，係具有降低製造成本的作用。且外界的氣流同樣可以直接從鄰近該基板11的該軸向端部2c經由該數個通氣溝G進入該環槽34，使該數個通氣溝G可易於對設於該上端緣32a及該下端緣32b之間的第一動壓溝33a供氣，該轉動件3a與該軸承2之間可以形成均勻穩定且強大的氣壓膜，以提供足夠的動壓力，係可以具有提升動壓效果的作用。 Please refer to FIG. 6, which is the third embodiment of the pneumatic pressure bearing structure of the present invention, the air groove G can be recessed on the inner peripheral surface 2a of the bearing 2, and one end of the air groove G can be Located at the axial end portion 2c of the base plate 11, the structure is simple and easy to manufacture, which has the effect of reducing the manufacturing cost. And the air flow from the outside can also directly enter the annular groove 34 from the axial end portion 2c adjacent to the substrate 11 through the plurality of air grooves G, so that the plurality of air grooves G can be easily opposite to the upper end edge 32a and the air groove G. The first dynamic pressure groove 33a between the lower end edges 32b supplies air, and a uniform, stable and strong air pressure film can be formed between the rotating member 3a and the bearing 2 to provide sufficient dynamic pressure, which can improve the dynamic pressure effect. effect.

又，該第一磁性件13與第二磁性件3b係位於鄰近該基板11處，該第二磁性件3b可以位於該擴徑環部32與該扣環5之間，且該第二磁性件3b可以徑向對位於該基座1的第一磁性件13；藉由該第二磁性件3b與該第一磁性件13磁性相反而形成一磁力中心，使該轉動件3a偏離時可以被該磁力中心拉回並維持相同位置轉動。 In addition, the first magnetic member 13 and the second magnetic member 3b are located adjacent to the substrate 11 , the second magnetic member 3b may be located between the diameter expansion ring portion 32 and the retaining ring 5 , and the second magnetic member 3b can radially face the first magnetic member 13 located on the base 1; the second magnetic member 3b is magnetically opposite to the first magnetic member 13 to form a magnetic force center, so that when the rotating member 3a deviates, it can be moved by the The magnetic center pulls back and maintains the same position as it rotates.

請參照第7圖所示，其係本發明氣動壓軸承結構的第四實施例，該通氣溝G的二端可以分別位於該軸承2的二軸向端部2c，外界的氣流可以從該二軸向端部2c經由該數個通氣溝G進入該環槽34，使該數個通氣溝G可以對設於該上端緣32a及該下端緣32b之間的第一動壓溝33a提供更多的動壓力，該轉動件3a與該軸承2之間可以形成均勻穩定且強大的氣壓膜，係可以進一步提升動壓效果的作用。 Please refer to FIG. 7, which is the fourth embodiment of the pneumatic pressure bearing structure of the present invention. The two ends of the air groove G can be located at the two axial ends 2c of the bearing 2, respectively. The axial end portion 2c enters the annular groove 34 through the plurality of ventilation grooves G, so that the plurality of ventilation grooves G can provide more pressure to the first dynamic pressure groove 33a between the upper end edge 32a and the lower end edge 32b If the dynamic pressure is high, a uniform, stable and strong air pressure film can be formed between the rotating member 3a and the bearing 2, which can further enhance the dynamic pressure effect.

此外，該扣環5可以位於遠離該基板11的一端，並由該第一磁性件13與該軸承2分別抵接該扣環5的二端，該墊片6可以位於該中心軸31外周並徑向對位於該扣環5，且該第二磁性件3b與該擴徑環部32可以分別抵接該墊片6的二端，該墊片6可用以將該第二磁性件3b與該擴徑環部32隔開，使該扣環5可易於伸入該第二磁性件3b與該擴徑環部32之間的部位，該扣環5的一通孔51孔徑D1較佳可以小於該轉動件3a的最大徑寬D2；如此，該轉動件3a旋轉時，係可以進一步限制該轉動件3a的軸向位移，以避 免該轉動件3a脫離該軸承2。 In addition, the retaining ring 5 can be located at one end away from the base plate 11 , and the first magnetic member 13 and the bearing 2 respectively abut the two ends of the retaining ring 5 , and the washer 6 can be located on the outer circumference of the central shaft 31 and The retaining ring 5 is radially opposite to each other, and the second magnetic member 3b and the diameter-expanding ring portion 32 can respectively abut on two ends of the gasket 6, and the gasket 6 can be used for the second magnetic member 3b and the The diameter-expanding ring portion 32 is spaced apart, so that the retaining ring 5 can easily extend into the position between the second magnetic member 3b and the diameter-expanding ring portion 32 , and the diameter D1 of a through hole 51 of the retaining ring 5 can preferably be smaller than the diameter D1 of the through hole 51 of the retaining ring 5 The maximum diameter and width D2 of the rotating member 3a; in this way, when the rotating member 3a rotates, the axial displacement of the rotating member 3a can be further restricted to avoid The rotating member 3 a is prevented from being separated from the bearing 2 .

請參照第8圖所示，其係本發明氣動壓軸承結構的第五實施例，該軸管12的內周面12a可以具有一進氣道111，該進氣道111的一端可以鄰近該基板11，該進氣道111的另一端可以對位該軸承2的貫孔21，該進氣道111與該貫孔21可以共同構成該通氣溝G，如此，該結構簡易而便於製造，係具有降低製造成本的作用。且外界的氣流可以從該進氣道111、該貫孔21進入該環槽34，使該數個通氣溝G可以對設於該上端緣32a及該下端緣32b之間的第一動壓溝33a供氣，該轉動件3a與該軸承2之間可以形成均勻穩定且強大的氣壓膜，以提供足夠的動壓力，係可以具有提升動壓效果的作用。 Please refer to FIG. 8, which is the fifth embodiment of the pneumatic pressure bearing structure of the present invention. The inner peripheral surface 12a of the shaft tube 12 may have an air inlet 111, and one end of the air inlet 111 may be adjacent to the base plate 11. The other end of the air inlet 111 can be aligned with the through hole 21 of the bearing 2. The air inlet 111 and the through hole 21 can together form the air channel G. Thus, the structure is simple and easy to manufacture, and has The effect of reducing manufacturing costs. And the external air flow can enter the annular groove 34 from the air inlet 111 and the through hole 21, so that the plurality of ventilation grooves G can be opposed to the first dynamic pressure groove between the upper end edge 32a and the lower end edge 32b. 33a supply air, a uniform, stable and strong air pressure film can be formed between the rotating member 3a and the bearing 2 to provide sufficient dynamic pressure, which can improve the dynamic pressure effect.

此外，在本實施例中，該中心軸31與該擴徑環部32可以選擇為一體成形相連接，以提升該轉動件3a的結構強度。 In addition, in this embodiment, the central shaft 31 and the diameter-expanding ring portion 32 can be selected to be integrally formed and connected, so as to enhance the structural strength of the rotating member 3a.

綜上所述，本發明的氣動壓軸承結構及具有該氣動壓軸承結構之馬達，利用該軸承或/及該軸管具有至少一通氣溝，該通氣溝可以連通該至少一第一動壓溝與外界；如此，外界的氣流可以經由該通氣溝對設於該上端緣及該下端緣之間的第一動壓溝供氣，以及外界的氣流可以經由該上端緣或該下端緣進入該第二動壓溝，使該轉動件與該軸承之間可以形成均勻穩定且強大的氣壓膜，以提供足夠的動壓力，係具有可以提升動壓效果的功效。 To sum up, the pneumatic bearing structure and the motor having the pneumatic bearing structure of the present invention utilize the bearing or/and the axle tube to have at least one air channel, and the air channel can communicate with the at least one first dynamic pressure channel In this way, the air flow from the outside can supply air to the first dynamic pressure groove arranged between the upper end edge and the lower end edge through the ventilation groove, and the air flow from the outside can enter the first dynamic pressure groove through the upper end edge or the lower end edge. Two dynamic pressure grooves can form a uniform, stable and strong air pressure film between the rotating member and the bearing to provide sufficient dynamic pressure, which has the effect of improving the dynamic pressure effect.

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 by the above-mentioned preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various changes and modifications relative to the above-mentioned embodiments without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the patent application attached hereto.

1:基座 1: Base

11:基板 11: Substrate

12:軸管 12: Axle tube

12a:內周面 12a: inner peripheral surface

13:第一磁性件 13: The first magnetic piece

2:軸承 2: Bearing

2a:內周面 2a: inner peripheral surface

2b:外周面 2b: Outer peripheral surface

2c:軸向端部 2c: Axial end

21:貫孔 21: Through hole

22:環溝 22: Ring groove

23:隙縫部 23: Slot part

3:轉子 3: Rotor

3a:轉動件 3a: Turning parts

3b:第二磁性件 3b: Second magnetic piece

3c:殼體 3c: Shell

3d:永久磁鐵 3d: permanent magnet

30:外周面 30: Outer peripheral surface

31:中心軸 31: Center shaft

31a:外周面 31a: Peripheral surface

32:擴徑環部 32: Expanding ring part

32a:上端緣 32a: upper edge

32b:下端緣 32b: Lower edge

33a:第一動壓溝 33a: The first dynamic pressure groove

33b:第二動壓溝 33b: Second dynamic pressure groove

34:環槽 34: Ring groove

35:防脫凹槽 35: Anti-drop groove

4:定子 4: Stator

5:扣環 5: Buckle

6:墊片 6: Gasket

G:通氣溝 G: Ventilation ditch

Claims (18)

一種氣動壓軸承結構，包含：一基座，具有一軸管；一軸承，結合於該軸管內；及一轉子，具有一轉動件可旋轉地設於該軸承，該轉動件的外周面具有至少一第一動壓溝及至少一第二動壓溝，該第一動壓溝未鄰接該轉動件的上端緣及下端緣，該第二動壓溝鄰接該轉動件的上端緣或下端緣；其中，該軸承或/及該軸管具有至少一通氣溝，該通氣溝的一端位於該軸承的其中一軸向端部，該通氣溝的另一端連通該第一動壓溝，使外界氣流連通該通氣溝與該至少一第一動壓溝。 A pneumatic pressure bearing structure, comprising: a base with a shaft tube; a bearing combined in the shaft tube; and a rotor with a rotating member rotatably arranged on the bearing, the outer peripheral surface of the rotating member has at least a first dynamic pressure groove and at least one second dynamic pressure groove, the first dynamic pressure groove is not adjacent to the upper end edge and the lower end edge of the rotating member, and the second dynamic pressure groove is adjacent to the upper end edge or the lower end edge of the rotating member; Wherein, the bearing or/and the shaft tube have at least one air groove, one end of the air groove is located at one of the axial ends of the bearing, and the other end of the air groove is connected to the first dynamic pressure groove, so that the outside air can be communicated The ventilation groove and the at least one first dynamic pressure groove. 如請求項1之氣動壓軸承結構，其中，該轉動件的外周面具有一環槽連通該第一動壓溝，該通氣溝連通該環槽以便對該第一動壓溝供氣。 The pneumatic pressure bearing structure of claim 1, wherein an annular groove communicates with the first dynamic pressure groove on the outer peripheral surface of the rotating member, and the ventilation groove communicates with the annular groove so as to supply air to the first dynamic pressure groove. 如請求項1之氣動壓軸承結構，其中，該通氣溝凹設於該軸承的外周面，該通氣溝由該軸承的一貫孔對位及連通該第一動壓溝。 The pneumatic pressure bearing structure of claim 1, wherein the ventilation groove is recessed on the outer peripheral surface of the bearing, the ventilation groove is aligned with the through hole of the bearing and communicates with the first dynamic pressure groove. 如請求項1之氣動壓軸承結構，其中，該通氣溝貫穿該軸承的內周面與外周面。 The pneumatic pressure bearing structure of claim 1, wherein the air groove penetrates the inner peripheral surface and the outer peripheral surface of the bearing. 如請求項1之氣動壓軸承結構，其中，該通氣溝凹設於該軸承的內周面。 The pneumatic pressure bearing structure of claim 1, wherein the air groove is recessed on the inner peripheral surface of the bearing. 如請求項1之氣動壓軸承結構，其中，該軸承具有一貫孔貫穿該軸承的內周面與外周面，該軸管的內周面具有一進氣道，該進氣道與該貫孔共同構成該通氣溝。 The pneumatic pressure bearing structure of claim 1, wherein the bearing has a through hole penetrating the inner peripheral surface and the outer peripheral surface of the bearing, the inner peripheral surface of the shaft tube has an air inlet, the air inlet and the through hole are common constitute the ventilation channel. 如請求項1之氣動壓軸承結構，其中，該轉動件的外周面具有一環槽連通該第一動壓溝，該通氣溝的二端分別位於該軸承的二軸向端部，該軸承具有一貫孔對位該環槽並連通該通氣溝。 The pneumatic pressure bearing structure of claim 1, wherein an annular groove on the outer peripheral surface of the rotating member communicates with the first dynamic pressure groove, two ends of the air groove are respectively located at two axial ends of the bearing, and the bearing has a consistent The hole aligns the ring groove and communicates with the air groove. 如請求項1之氣動壓軸承結構，其中，該轉動件的外周面具有一環槽連通該第一動壓溝，該軸承的內周面凹設有一環溝，該環溝與該轉子的環槽徑向相對，該通氣溝連通該環溝。 The pneumatic pressure bearing structure of claim 1, wherein the outer peripheral surface of the rotating member has an annular groove communicating with the first dynamic pressure groove, the inner peripheral surface of the bearing is recessed with an annular groove, and the annular groove is connected to the annular groove of the rotor. Radially opposite, the ventilation groove communicates with the annular groove. 如請求項1之氣動壓軸承結構，其中，該軸管內具有一第一磁性件，該轉子具有一第二磁性件位於該軸管內並徑向對位於該第一磁性件。 The pneumatic pressure bearing structure of claim 1, wherein the shaft tube has a first magnetic member, and the rotor has a second magnetic member located in the shaft tube and radially opposite to the first magnetic member. 如請求項1之氣動壓軸承結構，其中，該轉動件具有一中心軸及連接於該中心軸外周面的一擴徑環部，該第一動壓溝位於該擴徑環部，該轉子具有一第二磁性件位於該中心軸外周面。 The pneumatic pressure bearing structure of claim 1, wherein the rotating member has a central shaft and a diameter-expanding ring portion connected to the outer peripheral surface of the central shaft, the first dynamic pressure groove is located on the diameter-expanding ring portion, and the rotor has A second magnetic element is located on the outer peripheral surface of the central axis. 如請求項10之氣動壓軸承結構，其中，該中心軸與該擴徑環部一體成形相連接。 The pneumatic pressure bearing structure of claim 10, wherein the central shaft and the diameter-expanding ring portion are integrally formed and connected. 如請求項1之氣動壓軸承結構，其中，該轉動件具有一擴徑環部，該上端緣及該下端緣位於該擴徑環部，該上端緣及該下端緣係形成導角。 The pneumatic pressure bearing structure of claim 1, wherein the rotating member has a diameter-expanding ring portion, the upper end edge and the lower end edge are located in the diameter-expanding ring portion, and the upper end edge and the lower end edge form a chamfer. 如請求項1之氣動壓軸承結構，其中，該軸承的至少一軸向端部具有一隙縫部。 The pneumatic pressure bearing structure of claim 1, wherein at least one axial end portion of the bearing has a slit portion. 如請求項1之氣動壓軸承結構，另包含一扣環，該轉動件貫穿該扣環，該扣環伸入該轉動件的一防脫凹槽。 The pneumatic pressure bearing structure of claim 1 further comprises a retaining ring, the rotating member penetrates the retaining ring, and the retaining ring extends into a disengagement prevention groove of the rotary member. 如請求項14之氣動壓軸承結構，其中，另包含一墊片結合該軸承，該墊片位於該轉動件的一擴徑環部與該扣環之間。 The pneumatic pressure bearing structure as claimed in claim 14, further comprising a spacer to connect the bearing, the spacer is located between a diameter expansion ring portion of the rotating member and the retaining ring. 如請求項1之氣動壓軸承結構，另包含一扣環，該軸管內具有一第一磁性件，該第一磁性件與該軸承分別抵接該扣環的二端，該扣環的一通孔孔徑小於該轉動件的最大徑寬。 The pneumatic pressure bearing structure of claim 1 further comprises a retaining ring, the shaft tube has a first magnetic member, the first magnetic member and the bearing are respectively abutted against two ends of the retaining ring, and a connection of the retaining ring is The hole diameter is smaller than the maximum diameter and width of the rotating part. 如請求項16之氣動壓軸承結構，其中，另包含一墊片，該轉子具有一第二磁性件位於該軸管內，該第二磁性件與該轉動件的一擴徑環部 分別抵接該墊片的二端。 The pneumatic pressure bearing structure of claim 16, further comprising a washer, the rotor having a second magnetic member located in the shaft tube, the second magnetic member and an expanding ring portion of the rotating member respectively abut the two ends of the gasket. 一種馬達，包含：一定子，環繞該軸管設置；及一如請求項1至17中任一項之氣動壓軸承結構，該轉子具有一永久磁鐵對位於該定子。 A motor, comprising: a stator arranged around the shaft tube; and the pneumatic pressure bearing structure according to any one of claims 1 to 17, the rotor having a pair of permanent magnets positioned on the stator.
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JPS5890055U (en) * 1981-12-11 1983-06-18 株式会社東芝 brushless electric motor
JPS63142422A (en) * 1986-12-05 1988-06-14 Hitachi Ltd Method for extracting frequency appearing character string
JPS6479416A (en) * 1987-09-18 1989-03-24 Nippon Denso Co Hydrostatic bearing device
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