13.28327 九、發明說明： 【發明所屬之技術領域】 本發明係涉及一種馬達驅動結構。 【先前技術】 在馬達結構中，其轉子旋轉運作時之平穩性仰賴 於馬達之定子與轉子間之輪承來完成，這對於大型馬 達結構而言，由於馬達定子較所需組裝之轴承配件大 很多，其内之組配空間亦相對該軸承配件大很多，故 該軸承配件並不會造成組配空間之不足，且組裝軸承 配件之過程亦因爲具有足夠之剩餘空間而並無組裝 上之困難；然而，隨著科學技術和現代工業之不斷發 展，目前電子産品向著短小輕薄發展之趨勢越來越明 顯，所需使用之馬達亦將隨之微型化，其整體空間、 構件均被壓縮至極小狀態，故原本用以支承轉子之轴 承配件與馬達定子間之比例即變得相當接近，如此， 軸承配件之組裝過程亦就相應變得相當困難，從而造 成成品不良率之提高，且該適用於微型馬達之轴承配 件由於構造精密’造成製造成本之增長而不符合較佳 之産業利用性。 在微型馬達中，如果不設軸承配件，藉由定子直 接支撐轉子旋轉，將會使定子與轉子之間接觸過於緊 密，從而導致定子與轉子直接接觸，在轉子旋轉之過 程中，則由於定子與轉子之間接觸面積過大而具有相 13.28327 對較大之滑動摩擦，不利於轉子之轉動，還容易造成 定子與轉子之磨損而減少使用壽命，如果在定子與轉 . 子之間形成間隙，雖可減少摩擦，但卻容易造成轉子 晃動，不能使轉子穩定運轉。 € 【發明内容】 有鑒於此，有必要提供一種減少摩擦且可使轉子 穩定運轉之馬達驅動結構。 一種馬達驅動結構’包括定子及置於該定子内之 • 轉子，所述定子内形成供容納轉子之空間，該定子之 内表面向定子内之空間凸伸設有支撐該轉子之至少 一個支撐體。 與習知技術相比，上述馬達驅動結構中，該定子 上設有支撐體，所述支撐體起到支撐穩定轉子之作 用，實現轉子之平順運轉。另，支撐體只是與轉子之 局部面積接觸，其接觸面積較小，從而可減少滑動摩 擦，有利於轉子之轉動。再者，由於無需習知技術之 I 軸承結構，從而可簡化製造流程，降低生産成本。 【實施方式】 „ 圖1至圖3所示爲本發明馬達驅動結構一較佳實 施例之結構示意圖，在本實施例中，以一相機伸縮鏡 頭爲例作介紹，該相機伸縮鏡頭可以用於各類具有照 相功能之電子裝置比如照相手機、數碼相機等產品 上。 該馬達驅動結構包括一鏡頭座10 (如圖2所示）、 7 置於該鏡頭座10内之一定子32、設於該定子32内之一 轉子34、被該定子32與轉子34驅動之一鏡頭組50及蓋 設於該鏡頭組50上之一上蓋70。 該鏡頭座10包括一上殼座12及與該上殼座12配 合之一下殼座14，該上殼座12與下殼座14共同形成容 置該定子32、轉子34及鏡頭組50之容置空間。 該上、下殼座12、14之結構基本相同，該上、下 殼座12、14均包括一中空圓筒狀之侧壁121、141及形 成於該侧壁121、141一端之一缺口 126、146，該上殼 座12與下殼座14組裝時，缺口 126、146所在之兩端相 拼接，兩缺口 126、146相對接共同形成一穿孔18 (如 圖2所示）以供設於定子32上之接線端子（圖未示） 伸出，便於定子32與電源（圖未示）連接。 該定子32呈筒狀，其置於該鏡頭座1〇所形成之容 置空間内，該定子32包括一定子線圈座321及軸向纏 繞於該定子線圈座321外表面之線圈322。該線圈322 用於與電源電連接，該定子線圈座321呈環狀，其内 部形成可容置轉子34之柱狀空間；在本實施例中’該 定子線圈座321之内環面設有上下堆疊設置之兩組極 齒組合，每一極齒組合相互疊置且沿圓周方向交錯設 置複數極齒323，該等極齒323間填充有塑膠層329加 以固定，固定之方式可以採用插入模制成型（insert molding)之技術，即將定子鐵心（即定子線圈座3：21)作 爲插入件，置入成型模具中，之後注入熔融之塑膠， 1328327 填入至定子線圈座321之極齒323之間，從而在冷卻固 化後將該等極齒323之間相互連接固定。該塑膠層329 ’ 上設有向内凸設之複數支撐體328，該等支撐體328與 • 塑膠層329採用在上述插入模制成型之步驟中—體成 型’從而可簡化製造流程’降低生產成本，該等支撑 體328等間隔設置於定子32之内表面，每一支標體328 沿定子32之轴向呈長條狀之凸柱分佈》其外表面呈弧_ 形，即形成外凸之光滑弧面，從而可使容置於定子32 • 内之轉子34與支撐體328形成線接觸，轉子34在旋轉 之過程中，支撐體328由於外表面呈弧形而平滑過 渡，從而減小摩擦力，並避免轉子34晃動，支撐體328 之數量最好爲三個或三個以上，以進一步確保轉子34 之支撐穩定作用。該定子線圈座321之頂端即靠近上 殼座12之端部向上凸設複數凸起324，該等凸起324沿 柱狀空間之圓周方向等間隔設置，該定子線圈座321 之底端即靠近下殼座14之端部於其内緣向内凸設形 ❿ 成一環狀之突出部326，所述支撐體328之下端抵靠該 - 突出部326，而其上端侧靠近定子線圈座321之頂端， . 該突出部326之底端之内緣進一步向内延伸形成一凸 緣327，該凸緣327之高度小於該突出部326之高度， 該突出部326與凸緣327分別用於承載轉子32及鏡頭 組34。 該定子32之外徑與鏡頭座10之内徑大致相等，定 子32之外環面與鏡頭座10之内壁面相接觸，從而將定 9 1328327 子32限定於鏡頭座1〇内，電源經由穿孔18與線圈323 電連接。 該轉子34容置於該定子32所形成之柱狀空間 内’其包括一圓環柱狀之永久磁石341，該磁石341可 爲氧化鐵磁石（Ferrite)、鉉鐵硼磁石（NdFeB)等，其設 於定子線圈座321之突出部326上，該磁石341頂端設 有一驅動套環342，該驅動套環342亦呈中空圓環狀， 其下端之外表面設置一台階部343，該磁石341之頂端 卡置於該台階部343内，以使該驅動套環342與該磁石 341开>成爲一體，該驅動套環342之内壁設有驅動鏡頭 組50運動之内螺紋344。 該鏡頭組50置於該轉子34内’該鏡頭組50包括一 上端部51及一下端部54，該上端部51與該下端部54均 呈圓柱狀’該下端部54於其外壁之頂端設有與驅動套 環342内壁之内螺紋344相螺合之外螺紋544，該上端 部51之外徑小於該下端部54之外徑，其外壁上軸向設 有向内凹陷之複數溝槽541，該等溝槽541沿該上端部 51之圓周方向等間隔設置。 該上蓋70蓋設於該鏡頭組50上，其呈環狀，該上 蓋70中間設有一開孔71。該上蓋70之外徑與該鏡頭座 10之外徑大致相等，該開孔71之直徑小於該鏡頭組5〇 之下端部54之外徑而略大於上端部51之外徑。該上蓋 70上圍繞該開孔71設有複數狹槽724，該等狹槽724沿 環狀上蓋70之圓周方向等間隔設置，其與該定子線圈13.28327 IX. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a motor drive structure. [Prior Art] In the motor structure, the smoothness of the rotor rotation operation depends on the wheel bearing between the stator and the rotor of the motor, which is large for the large motor structure because the motor stator is larger than the required bearing assembly. A lot of the assembly space is also much larger than the bearing fittings, so the bearing fittings do not cause the lack of assembly space, and the process of assembling the bearing fittings is not difficult to assemble because of sufficient remaining space. However, with the continuous development of science and technology and modern industry, the current trend of electronic products to become shorter and lighter and thinner is becoming more and more obvious. The motors required will also be miniaturized, and the overall space and components will be compressed to a minimum. State, so the ratio between the bearing fittings used to support the rotor and the stator of the motor becomes quite close, so that the assembly process of the bearing fittings becomes correspondingly difficult, resulting in an increase in the defective rate of the finished product, and the application is applicable to Bearing accessories for micro motors are not suitable for better industries due to the increase in manufacturing costs due to the precision of construction With sex. In the micro motor, if the bearing fitting is not provided, the stator directly supports the rotation of the rotor, which will make the contact between the stator and the rotor too close, thus causing the stator to directly contact the rotor. During the rotation of the rotor, due to the stator and The contact area between the rotors is too large and has a large sliding friction of the phase 13.28327, which is not conducive to the rotation of the rotor, and is also likely to cause wear of the stator and the rotor to reduce the service life. If a gap is formed between the stator and the rotor, although Reduce friction, but it is easy to cause the rotor to sway and not stabilize the rotor. [Explanation] In view of the above, it is necessary to provide a motor drive structure that reduces friction and allows the rotor to operate stably. A motor driving structure includes a stator and a rotor disposed in the stator, wherein a space for accommodating a rotor is formed in the stator, and an inner surface of the stator protrudes into a space in the stator and at least one support body supporting the rotor . Compared with the prior art, in the above motor drive structure, the stator is provided with a support body, which serves to support the stable rotor and realize smooth running of the rotor. In addition, the support body is only in contact with the partial area of the rotor, and the contact area is small, so that the sliding friction can be reduced and the rotation of the rotor is facilitated. Furthermore, since the I bearing structure of the prior art is not required, the manufacturing process can be simplified and the production cost can be reduced. [Embodiment] FIG. 1 to FIG. 3 are schematic structural views of a preferred embodiment of a motor driving structure according to the present invention. In this embodiment, a camera telescopic lens is taken as an example, and the camera telescopic lens can be used for Various types of electronic devices having camera functions such as camera phones, digital cameras, etc. The motor drive structure includes a lens mount 10 (shown in FIG. 2), 7 a stator 32 disposed in the lens mount 10, and a rotor 34 in the stator 32, a lens assembly 50 driven by the stator 32 and the rotor 34, and an upper cover 70 disposed on the lens assembly 50. The lens mount 10 includes an upper housing 12 and the upper portion The housing 12 cooperates with a lower housing 14 which together with the lower housing 14 forms an accommodation space for accommodating the stator 32, the rotor 34 and the lens assembly 50. The structure of the upper and lower housings 12, 14 Basically, the upper and lower housings 12, 14 each include a hollow cylindrical side wall 121, 141 and a notch 126, 146 formed at one end of the side wall 121, 141. The upper housing 12 and the lower housing When the seat 14 is assembled, the two ends of the notches 126 and 146 are spliced, and the two notches 126 The 146 is formed in abutment to form a through hole 18 (shown in FIG. 2) for extending a terminal (not shown) provided on the stator 32 for facilitating connection of the stator 32 to a power source (not shown). The stator 32 is disposed in an accommodating space formed by the lens holder 1 . The stator 32 includes a certain sub-coil holder 321 and a coil 322 axially wound around the outer surface of the stator coil holder 321 . The coil 322 is used for power supply. The stator coil holder 321 is annular, and has a columnar space for accommodating the rotor 34 therein. In the embodiment, the inner ring surface of the stator coil holder 321 is provided with two sets of pole teeth stacked on top of each other. In combination, each of the pole teeth is superposed on each other and the plurality of pole teeth 323 are staggered in the circumferential direction. The pole teeth 323 are filled with a plastic layer 329 for fixing. The fixing may be performed by insert molding. The technique is to insert the stator core (ie, the stator coil base 3:21) as an insert into the forming mold, and then inject the molten plastic, and 1328327 is filled between the pole teeth 323 of the stator coil holder 321 to cool and solidify. The pole 323 is fixedly connected to each other. The plastic layer 329' is provided with a plurality of support bodies 328 protruding inwardly, and the support bodies 328 and the plastic layer 329 are formed in the step of insert molding described above. Therefore, the manufacturing process can be simplified to reduce the production cost. The support bodies 328 are equally spaced on the inner surface of the stator 32, and each of the standard bodies 328 is distributed along the axial direction of the stator 32. The arc _ shape, that is, the convex curved surface is formed, so that the rotor 34 accommodated in the stator 32 can be in line contact with the support body 328. During the rotation of the rotor 34, the support body 328 is arced due to the outer surface. The shape is smooth and smooth, thereby reducing the friction and avoiding the sway of the rotor 34. The number of the support bodies 328 is preferably three or more to further ensure the support stabilization of the rotor 34. A plurality of protrusions 324 are protruded upward from the end of the stator coil holder 321 , that is, the end portion of the upper housing 12 , and the protrusions 324 are equally spaced along the circumferential direction of the columnar space, and the bottom end of the stator coil holder 321 is close to The end portion of the lower casing 14 is convexly formed inwardly at an inner edge thereof to form an annular projection 326, the lower end of the support body 328 abuts against the projection 326, and the upper end side thereof is adjacent to the stator coil holder 321 The inner edge of the bottom end of the protrusion 326 further extends inwardly to form a flange 327 having a height smaller than the height of the protrusion 326. The protrusion 326 and the flange 327 are respectively used for carrying the rotor. 32 and lens group 34. The outer diameter of the stator 32 is substantially equal to the inner diameter of the lens holder 10. The outer annular surface of the stator 32 is in contact with the inner wall surface of the lens holder 10, thereby defining the stator 1 1328327 32 in the lens holder 1 , and the power supply via the through hole 18 It is electrically connected to the coil 323. The rotor 34 is housed in a columnar space formed by the stator 32. The magnet 34 is a permanent magnet 341 having a circular column shape, and the magnet 341 may be a ferrite magnet, a neodymium iron boron magnet (NdFeB) or the like. It is disposed on the protruding portion 326 of the stator coil holder 321 . The top end of the magnet 341 is provided with a driving collar 342. The driving collar 342 is also formed in a hollow annular shape, and a step portion 343 is disposed on the outer surface of the lower end. The magnet 341 The top end of the card is placed in the step portion 343 so that the driving collar 342 is integrated with the magnet 341. The inner wall of the driving collar 342 is provided with an internal thread 344 for driving the movement of the lens group 50. The lens assembly 50 is disposed in the rotor 34. The lens assembly 50 includes an upper end portion 51 and a lower end portion 54. The upper end portion 51 and the lower end portion 54 are both cylindrical. The lower end portion 54 is disposed at the top end of the outer wall thereof. There is a thread 544 which is screwed with the internal thread 344 of the inner wall of the driving collar 342. The outer diameter of the upper end portion 51 is smaller than the outer diameter of the lower end portion 54, and the outer wall of the outer wall is provided with a plurality of grooves 541 which are recessed inwardly. The grooves 541 are provided at equal intervals in the circumferential direction of the upper end portion 51. The upper cover 70 is disposed on the lens assembly 50 and has an annular shape. An upper opening 71 is defined in the middle of the upper cover 70. The outer diameter of the upper cover 70 is substantially equal to the outer diameter of the lens holder 10. The diameter of the opening 71 is smaller than the outer diameter of the lower end portion 54 of the lens unit 5〇 and slightly larger than the outer diameter of the upper end portion 51. The upper cover 70 is provided with a plurality of slots 724 around the opening 71. The slots 724 are equally spaced along the circumferential direction of the annular upper cover 70, and the stator coils
10 1328327 座321上之凸起324相配合，以防止該上蓋70移動或脫 落。該上蓋70之内緣徑向向内突伸至開孔71内之複數 - 導引部741 ’該等導引部741與該鏡頭組50之上端部51 外壁上之溝槽541相配合’以防止該鏡頭組5〇作圓周 方向之轉動’這樣可使鏡頭組5〇精確對位，避免晃 動’該導引部741沿轴向向下適當延伸但其長度小於 該溝槽541之長度（如圖3所示）。 組裳該馬達驅動結構時，該鏡頭組50置於該轉子 • 34内，該鏡頭組50之下端部54外壁上之外螺紋544與 該轉子34之驅動套環342内壁上之内螺紋344相螺 合；該轉子34容置於該定子32所形成之柱狀空間内， 其中該轉子34之永久磁石341與鏡頭組50分別置於該 定子32之定子線圈座321之突出部326與凸緣327上， 且該轉子34之外表面抵靠於該定子線圈座321之支撐 體328上’支撐體328外凸之弧面與該轉子34之外表面 _ 形成線接觸，以支撐該轉子34 ;該定子32置於該下殼 座12與上喊座14相連接共同形成之容置空間内；該上 ^ 蓋70與定子線圈座321固定，並蓋設於該鏡頭組50 上’並使該上蓋70上之狹槽724與該定子線圈座321上 之凸起324相配合，該上蓋7〇内緣上之導引部741與該 鏡頭組50之上端部51外壁上之溝槽541相配合。 如圖4所示，該馬達驅動結構工作時，定子32之 線圈322接通電源後’藉由線圈322與轉子34之永久磁 石341之磁場作用’驅動轉子34繞其軸線在支撐體328 11 1328327 之支樓下旋轉’然後藉由轉子34與鏡頭組5〇相配合之 螺紋結構，在該上蓋7〇之導引部741之限制與導引作 用下’將轉子34之轉動轉化爲鏡頭組50之軸向直線運 動’使鏡頭組50之上端部51伸縮於該上蓋70内外，實 現自動對焦之功能。 與習知技術相比，上述馬達驅動結構中，該定子 2之疋子線圈座321上設有支樓體328，該等支擇體 328可支撐轉子34，在省去原本將轉子34正對於中心 位置之軸承之情況下’仍可使轉子34在線圈322所產 生磁場之驅動下穩定運轉，從而實現轉子34之平順運 轉。另’支撐體328與轉子34只是線接觸，其接觸面 積較小，從而可減少滑動摩擦’有利於轉子34之轉 動。再者’由於無需習知技術之軸承結構，更符合產 品尺寸縮小之發展趨勢，且支撐體328與塑膠層329 一 體射出成型，從而可簡化製造流程，降低生産成本。 當然’上述馬達驅動結構中，該定子32之定子線 圈座321上之支撐體328亦可爲其他形式。圖5所示爲 本發明馬達驅動結構中之定子32a之第二較佳實施例 之立體圖，該定子32a之定子線圈座321a上之支撐體 328a設於極齒323間之塑膠層329上，爲沿定子線圈座 321a之内壁圓周方向分佈之環狀凸緣，其外表面形成 與轉子34局部相配合之光滑平面結構，當然，支標體 328a之外表輪扉亦可以設計成如第一個實施例中支撐 體328所示呈外凸之光滑弧面，達到降低摩擦之效 12 13.28327 纟。所述支撐體32㈣於所述兩纟且_組合之中間， 當然亦可設於上端或下端，所述支標體328a亦可版 ， 0多個’比如分設於極齒組合之上端、中間及^ $ U避免轉子34晃動’在該馬達驅動結構工作時， - %述支樓體328a抵靠轉子34之預定部位，並與轉 之肩部接觸’可使轉子34平穩運轉，同時可減少滑^ 摩擦。另，所述支樓體328a亦可爲分割成多個凸2 構’如圖6所示’爲本發明馬達驅動結構中之定子^ • 之第三較佳實施例之立體圖’所述支樓體328b沿^ 線圈座321b之圓周方向分爲多個凸塊結構，每一凸 t内表面形成與轉子34相配合之圓弧面結構，在不$ 冑轉子34運轉之穩定性之情況下，可進__步減少< 32b與轉子34之接觸面積，從而減小摩擦力。 圖7所示爲本發明馬達驅動結構中之定子之 四較佳實施例之立體圖，其中該定子32(；上之支撐^ • 现爲設於定子線圈座32_表面上之複數凸點Γ其 外表面形成與轉子34局部相抵靠之光滑弧面，該等凸 — ‘點讀量最好大於或等於三個，且均勻分佈於定子線 * 圈座32lc之内表面上，在該馬達驅動結構工作時，該 等凸點抵靠轉子34之預定部位’並與轉子34局部接 觸，支撐轉子34平穩運轉。 综上所述，本發明符合發明專利之要件，爰依法 提出專利申請。惟以上所述者僅為本發明之較佳實施 例，舉凡熟悉本案技藝之人士，在爱依本發明精神所 13 13.28327 作之等效修飾或變化，皆應涵蓋於以下之申請專利範 圍内。 【圖式簡單說明】 圖1爲本發明馬達驅動結構一較佳實施例之立體 分解圖。 圖2爲圖1所示馬達驅動結構之立體組裝圖。 圖3爲圖2所示馬達驅動結構沿III-III線之剖視圖。 圖4爲圖3所示馬達驅動結構之工作狀態之示意 # 圖。 圖5爲本發明馬達驅動結構中之定子之第二較佳 實施例之立體圖。 圖6爲本發明馬達驅動結構中之定子之第三較佳 實施例之立體圖。 圖7爲本發明馬達驅動結構中之定子之第四較佳 實施例之立體圖。 【主要元件符號說明】 鏡頭座 10 上殼座 12 下殼座 14 侧壁 121 、 141 缺口 126 ' 146 穿孔 18 定子 32 、 32a、 32b、 32c 定子線圈座 321 、 321a、 321b、 321c 線圈 322 極齒 323 凸起 324 突出部 326 凸緣 32710 1328327 The projections 324 on the seat 321 cooperate to prevent the upper cover 70 from moving or falling off. The inner edge of the upper cover 70 protrudes radially inwardly into the opening 71. The guiding portion 741 cooperates with the groove 541 on the outer wall of the upper end 51 of the lens assembly 50. Preventing the lens group 5 from rotating in the circumferential direction' such that the lens group 5 can be accurately aligned to avoid swaying. The guiding portion 741 is appropriately extended downward in the axial direction but the length thereof is smaller than the length of the groove 541 (eg, Figure 3). When the motor drive structure is assembled, the lens assembly 50 is placed in the rotor 34, and the external thread 544 on the outer wall of the lower end portion 54 of the lens assembly 50 is connected to the internal thread 344 on the inner wall of the drive collar 342 of the rotor 34. The rotor 34 is received in the columnar space formed by the stator 32. The permanent magnet 341 and the lens assembly 50 of the rotor 34 are respectively disposed on the protruding portion 326 and the flange of the stator coil holder 321 of the stator 32. 327, and the outer surface of the rotor 34 abuts against the support body 328 of the stator coil holder 321, the convex surface of the support body 328 is in line contact with the outer surface of the rotor 34 to support the rotor 34; The stator 32 is disposed in an accommodating space formed by the lower housing 12 and the upper yoke 14; the upper cover 70 is fixed to the stator coil holder 321 and is disposed on the lens assembly 50. The slot 724 on the upper cover 70 cooperates with the protrusion 324 on the stator coil holder 321 . The guiding portion 741 on the inner edge of the upper cover 7 is matched with the groove 541 on the outer wall of the upper end portion 51 of the lens assembly 50. . As shown in FIG. 4, when the motor driving structure is in operation, the coil 322 of the stator 32 is powered on and 'actuates the magnetic field of the permanent magnet 341 of the rotor 34 by the coil 322' to drive the rotor 34 around its axis at the support body 328 11 1328327. The rotation of the support is converted into the lens group 50 by the screw structure of the rotor 34 and the lens group 5〇, and under the restriction and guidance of the guide portion 741 of the upper cover 7 The axial linear motion 'expands the upper end portion 51 of the lens group 50 to the inside and outside of the upper cover 70 to realize the function of autofocus. Compared with the prior art, in the above motor driving structure, the stator coil base 321 of the stator 2 is provided with a branch body 328, and the supporting body 328 can support the rotor 34, and the rotor 34 is originally omitted. In the case of a bearing in the center position, the rotor 34 can still be stably operated by the magnetic field generated by the coil 322, thereby achieving smooth running of the rotor 34. Further, the support body 328 is only in line contact with the rotor 34, and its contact area is small, so that the sliding friction can be reduced to facilitate the rotation of the rotor 34. Furthermore, since the bearing structure of the prior art is not required, the development trend of the product size reduction is more in line, and the support body 328 and the plastic layer 329 are integrally injection molded, thereby simplifying the manufacturing process and reducing the production cost. Of course, in the above motor drive structure, the support body 328 on the stator coil base 321 of the stator 32 may have other forms. FIG. 5 is a perspective view showing a second preferred embodiment of the stator 32a of the motor drive structure of the present invention. The support body 328a of the stator coil holder 321a of the stator 32a is disposed on the plastic layer 329 between the pole teeth 323. The annular flange distributed along the circumferential direction of the inner wall of the stator coil holder 321a has an outer surface formed with a smooth planar structure partially cooperating with the rotor 34. Of course, the outer rim of the subscript 328a can also be designed as the first implementation. In the example, the support body 328 is shown as a convex curved surface, which has the effect of reducing friction 12 13.28327 纟. The support body 32 (d) is in the middle of the two 纟 and _ combinations, and may of course be disposed at the upper end or the lower end. The support body 328a may also be in the form of a plate, and more than 0 pieces are disposed at the upper end and the middle of the combination of the pole teeth. And ^ U avoid the rotor 34 from swaying 'When the motor drive structure is in operation, the % of the support body 328a abuts against a predetermined portion of the rotor 34 and is in contact with the shoulder of the turn to make the rotor 34 run smoothly and at the same time reduce Slip ^ friction. In addition, the support body 328a may also be divided into a plurality of convex structures as shown in FIG. 6 as a perspective view of a third preferred embodiment of the stator in the motor drive structure of the present invention. The body 328b is divided into a plurality of bump structures along the circumferential direction of the coil holder 321b, and the inner surface of each convex t forms a circular arc surface structure that cooperates with the rotor 34, without the stability of the operation of the rotor 34. The contact area of < 32b with the rotor 34 can be reduced to reduce the friction. Figure 7 is a perspective view showing a fourth preferred embodiment of the stator in the motor drive structure of the present invention, wherein the support of the stator 32 is now a plurality of bumps provided on the surface of the stator coil housing 32_ The outer surface forms a smooth arc surface that abuts against the rotor 34 partially. The convex--point reading amount is preferably greater than or equal to three, and is evenly distributed on the inner surface of the stator wire ring seat 32lc, in the motor driving structure. In operation, the bumps abut against the predetermined portion of the rotor 34 and are in partial contact with the rotor 34 to support the smooth operation of the rotor 34. In summary, the present invention meets the requirements of the invention patent, and the patent application is filed according to law. The descriptions are only the preferred embodiments of the present invention, and those skilled in the art, which are equivalent to the modifications or variations of 13 13.28327 in the spirit of the present invention, should be included in the following patent claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective exploded view of a preferred embodiment of a motor drive structure of the present invention. Fig. 2 is an assembled perspective view of the motor drive structure of Fig. 1. Fig. 3 is a view of the motor drive structure of Fig. 2 along III-III. Figure 4 is a schematic view of the operation of the motor drive structure of Figure 3. Figure 5 is a perspective view of a second preferred embodiment of the stator of the motor drive structure of the present invention. Fig. 7 is a perspective view of a fourth preferred embodiment of a stator in a motor drive structure of the present invention. [Description of main components] Lens base 10 upper housing 12 lower case Seat 14 side wall 121, 141 notch 126' 146 perforation 18 stator 32, 32a, 32b, 32c stator coil base 321 , 321a , 321b , 321c coil 322 pole tooth 323 protrusion 324 protrusion 326 flange 327
14 13.28327 支撐體 328、 328a、 328b、 328c 塑膠層 329 轉子 34 永久磁石 341 驅動套環 342 台階部 343 内螺紋 344 鏡頭組 50 上端部 51 下端部 54 溝槽 541 外螺紋 544 上蓋 70 開孔 71 狹槽 724 導引部 741 1514 13.28327 Support 328, 328a, 328b, 328c Plastic layer 329 Rotor 34 Permanent magnet 341 Drive collar 342 Step 343 Internal thread 344 Lens set 50 Upper end 51 Lower end 54 Groove 541 External thread 544 Upper cover 70 Opening 71 Narrow Slot 724 guiding portion 741 15