200824228 九、發明說明： 【發明所屬之技術領域】 ’特別關於一 本發明係關於一種馬達及其油封結構 種馬達及其磁性油封結構。 【先前技術】 流體軸承（fluid bearing )提供轉軸必要白^"计係以一 圖所示’ -種習用馬達1係包括一定子/〜月。如第1 以β —η上…疋千U、—轉軸12、 马因應馬達面轉速的順200824228 IX. Description of the invention: [Technical field to which the invention pertains] </ RTI> In particular, the invention relates to a motor and its oil seal structure, a motor thereof and a magnetic oil seal structure thereof. [Prior Art] The fluid bearing provides the necessary axis of the shaft. The system is shown in the figure. - The conventional motor 1 includes a certain number of sub-months. For example, the first step is β-η, 疋 thousand U, the shaft 12, and the motor speed of the motor
-軸承13以及-油封14。軸承 轉軸L 油封14可為-扣環或-金屬環。油封上轴承， 13 卜古b卢π 士 人μ + 係、δ又置於軸承 上方且於轉軸12，以將潤滑 内。當馬達1運轉時，軸承13利用潤身7 13 性提供轉軸12潤“得以簡運轉。本身之黏滞 然而’由於油封14係以非蛀結+ 12,益法完全㈣針 非接觸方式環設於轉軸 滑油將隨著馬達丨於長時 易w成潤 產生口桑音。再者，轉軸12 ^運轉下而慢慢线漏而 的現象，使馬達“勺土：因缺乏潤滑而產生鎖死 ’違1的可#度與使用壽命降低。 潤滑油洩漏，種:達及其磁性油封結構以降低 油的消耗，進而提i馬=滑油ΐ存於軸承中，降低潤滑 重要課題之—。、、、❸可*度與使用壽命’已成為 【發明内容] 200824228 ^於上述課題’本發明之目的為提供—種馬達及 ;1 二:;Γ#’藉由磁性流體以及磁性元件與導磁元 保存於轴？ /所形成的磁性油封結構’有效將潤滑油 ’、έ、θ承中，以提升馬達的可靠度與使用壽命。 彖疋為達上述目的，依據本發明之一種用於今隶 =性油封結構，該雜㈣結搆包括—师流體1 兹f生元件以及至少—導磁元件。該磁性流體係存在 於該該馬達之軸管部與轉軸之間，該磁性元件以及該導 磁兀件係套合該轉軸並封閉該軸管部之—端部。該導磁 元件舁σ亥磁性元件結合’藉由兩者間的磁性作用，形 該磁性油封結構。 ^為達上述目的，依據本發明之一種馬達，包括一軸 g 口卩轉子、一軸承、一定子及一磁性油封結構。該 轉子係具有一轉軸；該軸承係套合該轉軸，並容置於唁 軸管部；該定子係與該轉子對應設置，並套置於該轴管 部，該磁性油封結構係套合該轉軸並封閉該軸管部之一 鳊邻，a亥磁性油封結構包括一磁性流體、至少一磁性元 件及至少一導磁元件，該磁性流體係存在於該軸管部與 及轉軸之間，該導磁兀件與該磁性元件結合，藉由磁性 流體、該磁性元件以及該導磁元件之間的磁性作用，形 成該磁性油封結構。 承上所述，因依據本發明之一種馬達及其磁性油封 結構，藉由該磁性元件結合該導磁元件形成一磁性迴 路，使該磁性流體、該磁性元件以及該導磁元件之間的 200824228 兹ϋ作用’形成該磁性油封結構。相較於 發明能㈣效將潤滑油保存於該軸承中，、^/技術’本 【實施方式】 …度與使用壽命。 以下將參照相關圖式，今明 之-種㈠爲甘μ 據本發明較佳實施例 種馬達及其雜油封結構，其巾相同的 同的元件符號加以說明。 牛將相 〃請參閱第2圖所示，本發明較佳實施例之— 2係包括一軸管部24、一轉 … 将于22、一軸承23、一定子 21以及-磁性油封結才冓26。轉+22係具有—轉轴221 及一磁鐵222。定+ 21係與轉子22對應設置，位於磁 鐵222與轉軸221之間，並套置於軸管部24内。轴承 23係套合於轉轴221，並容置於軸管部24。轉軸2幻 之-端部係與—定位件27抵接，定位件27係為一磁壓 磁鐵或一耐磨片。由於轉軸221具有導磁性，故定位件 27可提供轉軸221 一穩定支撐的磁力。一潤滑油31係 存在於軸承23與轉轴221之間，以提供所需的潤滑。 磁性油封結構26係包括至少一磁性元件261、至 少一導磁元件262以及一磁性流體263。磁性元件261 係為一磁鐵、一電磁鐵或一磁石，例如但不限於—铷鐵 硼磁性元件；導磁元件262係為一導磁軛鐵，例如但不 限於一爪極式導磁軛鐵。磁性流體263係存在於導磁元 件262以及該轉軸221之間，且内含鐵、鈷、鎳或其人 金等材質。 200824228 請 參閱第3A圖所示，本發明較佳實施例之一磁性 元件與一導磁元件的結合示意圖。於此實施例中，磁性 元件261係以铷鐵硼磁鐵軸向充磁燒結而成，並内嵌於 導磁元件262a及262b之間。該導磁元件262a係為一 爪極式導磁軛鐵且具有四個N極爪極，且該導磁元件 262b亦為一爪極式導磁輛鐵且具有四個$極爪極，二 者結合成N、S極相互間隔排列之八爪極式導磁軛鐵。 於本毛明中，亦可為各三個N、s極相互間隔排列之六 爪極式導磁車厄鐵。 、磁性油封結構26之磁性作用係為磁性元件261藉 由V磁兀件262傳導磁性。由於導磁元件262之N、s 和係相nM己置’使得磁性元件26!之磁力線形成一徑向 磁力，路分佈藉以吸附該磁性流體263。續參照第2 圖，當馬達2處於運轉狀態時，潤滑油31隨著轉軸221 ，力而漸漸往磁性油封結構26之方向移動，此時，藉 磁性流體263與磁性元件261及等導磁元件⑽之間 1亦即藉由徑向磁性迴路分佈緊緊吸附磁性 L豆，磁性流體263即能夠阻止潤滑油31沿著車壶 ^221 ^ 31 、守間運轉而能夠保存於該轴承23中。 磁性：杜閱第圖所示’本發明較佳實施例之另-種 係以^鐵硼與第3A 1不同之處在於：該磁性元件261 具有四個 極相互間隔排列之導磁區域26a，亦可 200824228 形成一徑向磁力迴 、 馬達2處於運轉狀刀’以吸附該磁性流體263。當 而漸漸往磁性油封構^滑油31隨著轉軸221轉動 性流體263與磁性^件加^向曽移動’此時’藉由磁 性作用，亦即夢由柄 4 ¥磁70件262之間的磁 加，磁性磁性迴路分佈緊緊吸附磁性流體 |土*聪263即能夠阻+ 典、丄，， 繼續向外而洩漏，使 μ⑺，由31沿著轉轴221 便/閏α油3 1隨著馬達2乒羊 而能夠保存於軸承23中。 W 2長¥間運轉 由磁性s人t發明之—種馬達及其磁性油封結構藉 盘磁生Γ、、° 元件形成—磁性迴路，使磁性流體 二構Λ 磁71件之間的磁性作用，形成磁性油封 :::相較於習知技術，本發明能夠有效將潤滑油保存 ^亥軸承中，降低潤滑油之消耗，進而提升該馬達的可 罪度與使用壽命。 以上所述僅為舉例性，而非為限制性者。任何未脫 離本發明之精神與範疇，而對其進行之等效修改或變 更’均應包含於後附之申請專利範圍中。 【圖式簡單說明】 第1圖係為一種習用馬達及其油封構造之示意圖； 弟2圖係為依據本發明較佳實施例之一種馬達及其磁 性油封結構之示意圖； 第3Α圖係為依據本發明較佳實施例之磁性元件與二導 磁元件的結合示意圖；以及 200824228 種磁性元件 第3 B圖係為依據本發明較佳實施例之另 之示意圖。 元件符號說明： 1、2 馬達 11、21 定子 12 、 221 轉軸 13 轴承 14 油封 22 轉子 23 軸承 24 車由管部 26 磁性油封結構 262a > 262b 26a 27 31 221 222 261 262 263 導磁區域 定位件 潤滑油 轉轴 磁鐵 磁性元件 導磁元件 導磁耗鐵 磁性流體- bearing 13 and - oil seal 14. The bearing shaft L oil seal 14 can be a - buckle or a metal ring. The oil seal on the bearing, 13 Bu Gu b Lu π Shi people μ + system, δ is placed above the bearing and on the shaft 12 to be lubricated inside. When the motor 1 is running, the bearing 13 uses the body to provide the shaft 12 to "simplify the operation. The viscous itself. However, since the oil seal 14 is non-twisted + 12, the full-featured (four) needle non-contact mode is set. In the shaft oil, the sound will be produced as the motor lingers for a long time. In addition, the phenomenon that the shaft 12 ^ runs down and slowly leaks, so that the motor "spoken soil: lock due to lack of lubrication The death of 'violation' is ## and the service life is reduced. Lubricating oil leakage, species: and its magnetic oil seal structure to reduce oil consumption, and then raise the horse = oil in the bearing, reducing the important topic of lubrication. , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Is the magnetic element stored on the axis? / The formed magnetic oil seal structure ' effectively entrains the lubricants ', έ, θ to improve the reliability and service life of the motor. In order to achieve the above object, in accordance with one aspect of the present invention, there is provided a structure for a current oil seal comprising: a fluid of a teacher fluid and at least a magnetic component. The magnetic flow system is present between the shaft tube portion of the motor and the rotating shaft, and the magnetic element and the magnetic core member engage the rotating shaft and close the end portion of the shaft tube portion. The magnetic conductive element 舁 亥 磁性 magnetic element is combined to form a magnetic oil seal structure by magnetic interaction therebetween. In order to achieve the above object, a motor according to the present invention comprises a shaft g-rotor rotor, a bearing, a stator and a magnetic oil seal structure. The rotor has a rotating shaft; the bearing is sleeved with the rotating shaft and is accommodated in the stern tube portion; the stator is disposed corresponding to the rotor and sleeved on the shaft tube portion, and the magnetic oil sealing structure fits the shaft a shaft and a closed one of the shaft tube portions, wherein the magnetic oil seal structure comprises a magnetic fluid, at least one magnetic element and at least one magnetic conductive element, and the magnetic flow system is present between the shaft tube portion and the rotating shaft, The magnetically conductive element is coupled to the magnetic element to form the magnetic oil seal structure by magnetic interaction between the magnetic fluid, the magnetic element, and the magnetic conductive element. According to the above, a motor and a magnetic oil seal structure thereof according to the present invention, a magnetic circuit is formed by combining the magnetic element with the magnetic element, so that the magnetic fluid, the magnetic element and the magnetic conductive element are between 200824228 The effect of the 'forming' is to form the magnetic oil seal structure. Compared with the invention, the lubricating oil can be stored in the bearing, and the technology can be used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described with reference to the accompanying drawings. Referring to Figure 2, the preferred embodiment of the present invention - 2 includes a shaft tube portion 24, a turn ... will be 22, a bearing 23, a stator 21 and - magnetic oil seals 26 . The rotary +22 system has a rotating shaft 221 and a magnet 222. The fixed + 21 series is disposed corresponding to the rotor 22, is located between the magnet 222 and the rotating shaft 221, and is sleeved in the shaft tube portion 24. The bearing 23 is fitted to the rotating shaft 221 and housed in the shaft tube portion 24. The yoke-end portion of the rotating shaft 2 abuts against the positioning member 27, and the positioning member 27 is a magnetic pressure magnet or a wear-resistant sheet. Since the rotating shaft 221 has magnetic permeability, the positioning member 27 can provide a magnetic force for stably supporting the rotating shaft 221 . A lubricating oil 31 is present between the bearing 23 and the rotating shaft 221 to provide the required lubrication. The magnetic oil seal structure 26 includes at least one magnetic element 261, at least one magnetic conductive element 262, and a magnetic fluid 263. The magnetic element 261 is a magnet, an electromagnet or a magnet, such as but not limited to a neodymium iron boron magnetic element; the magnetic conductive element 262 is a magnetic yoke, such as but not limited to a claw pole type magnetic yoke . The magnetic fluid 263 is present between the magnetic conductive member 262 and the rotating shaft 221, and contains a material such as iron, cobalt, nickel or human gold. 200824228 Please refer to FIG. 3A, which is a schematic view showing the combination of a magnetic element and a magnetic conductive element according to a preferred embodiment of the present invention. In this embodiment, the magnetic element 261 is axially magnetized and sintered by a neodymium iron boron magnet and embedded between the magnetic conductive members 262a and 262b. The magnetic conductive element 262a is a claw pole type magnetic yoke and has four N pole claw poles, and the magnetic conductive element 262b is also a claw pole magnetic conductive iron and has four $ pole claw poles, two The eight-claw pole type yoke iron which is arranged at intervals of N and S poles is combined. In Ben Maoming, it is also possible to provide a six-claw pole type magnet for each of the three N and s poles spaced apart from each other. The magnetic action of the magnetic oil seal structure 26 is such that the magnetic element 261 conducts magnetic properties by the V magnetic element 262. Since the N, s and phase nM of the magnetically permeable element 262 have been placed such that the magnetic lines of the magnetic element 26! form a radial magnetic force, the path is distributed to adsorb the magnetic fluid 263. Referring to FIG. 2, when the motor 2 is in the running state, the lubricating oil 31 gradually moves toward the magnetic oil seal structure 26 along with the rotation shaft 221, and at this time, the magnetic fluid 263 and the magnetic member 261 and the like magnetic conductive member are moved. (10) 1 is that the magnetic L beans are tightly adsorbed by the radial magnetic circuit distribution, and the magnetic fluid 263 can prevent the lubricating oil 31 from being stored in the bearing 23 along the vehicle body 2221. Magnetics: The other embodiment of the preferred embodiment of the present invention differs from the third embodiment in that the magnetic element 261 has four magnetically conductive regions 26a spaced apart from each other. It is also possible to form a radial magnetic return in 200824228, and the motor 2 is in a running knife' to adsorb the magnetic fluid 263. As a result, the magnetic oil is gradually sealed to the oil 31. With the rotating shaft 221, the rotatory fluid 263 and the magnetic member are moved toward the 曽 to move 'at this time' by magnetic action, that is, between the handle 4 and the magnetic member 70 The magnetic addition, the magnetic magnetic circuit distribution tightly adsorbs the magnetic fluid | soil * Cong 263 can resist + code, 丄, and continue to leak out, so that μ (7), from 31 along the shaft 221 / 闰 α oil 3 1 It can be stored in the bearing 23 as the motor 2 pings. W 2 long ¥ between the operation of the magnetic s human t - the motor and its magnetic oil seal structure by magnetic Γ, ° element formation - magnetic circuit, the magnetic fluid two structure 磁 magnetic 71 between the magnetic, Forming a magnetic oil seal:: Compared with the prior art, the present invention can effectively store the lubricating oil in the bearing, reduce the consumption of the lubricating oil, and thereby improve the sin and service life of the motor. The above is intended to be illustrative only and not limiting. Any changes or modifications that come within the spirit and scope of the invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of a conventional motor and its oil seal structure; FIG. 2 is a schematic view of a motor and a magnetic oil seal structure thereof according to a preferred embodiment of the present invention; A schematic diagram of the combination of the magnetic component and the two magnetically permeable component of the preferred embodiment of the present invention; and FIG. 3B of the 200824228 magnetic component is a schematic view of a preferred embodiment of the present invention. Description of component symbols: 1, 2 Motor 11, 21 Stator 12, 221 Rotary shaft 13 Bearing 14 Oil seal 22 Rotor 23 Bearing 24 Vehicle tube part 26 Magnetic oil seal structure 262a > 262b 26a 27 31 221 222 261 262 263 Magnetic field locator Lubricating oil shaft magnet magnetic element magnetic conducting component magnetic flux consumption ferrofluid