1335385 九、發明說明： 【發明所屬之技術領域】 本發明係與排風機有關，特別是有關於一種結構較為 穩固之排風機馬達的定位結構。 5【先前技術】 一般的排風機結構，如第三圖所示，主要係於外殼(60) 中央設一隔板(61)，一馬達(62)固定於隔板(61)，馬達(62) 二側分別設有一可旋轉之轉軸(63)，各轉軸(63)另分設一單 點固定式之軸流風扇（64)。當馬達(62)驅動各轉軸(63)旋轉 10時，各轉軸(63)即可帶動風扇（64)旋轉，使風扇(64)產生氣 流’進而讓空氣自外殼(60)之二入口（66)朝出口（67)流出。 但是，於組裝上述單點固定式之排風機時，若是隔板(61) 的位置出現偏斜、表面不平整，使得馬達(62)固定於隔板(61) 之後’二轉轴(63)之軸線無法同軸於二入口（66)之軸心線， 15即會造成二風扇(64)偏離於二入口（66)之現象，進而影響排 風機之穩定性，風扇(64)無法維持平衡，以及降低排風機的 排風效率。 另外亦有一種排風機，如第四圖所示，其係利用一外 轉式驅動裝置(70)帶動風扇(71)，該驅動裝置(7〇)之固定子 20二端(72)係設置於外殼(73)，外轉子(74)介於外殼(73)與固定 子之間，風扇（71)則設於外轉子(74)，且可由外轉子(7句所 帶動相對於固定子旋轉，同樣可達到帶動空氣流動的功 用。然而，當外轉子(74)與風扇(71)同步旋轉時，風扇（71) 與空氣之間會產生出循環性且頻繁之振動，而風扇（71)與外 4 轉Π4)之間僅藉由—支板(75)相互緊密連接，如因無法維 持穩定的製造狀況’f會造成風扇㈤旋轉時無法維持平衡 的狀態’目而風扇㈤與外轉子(74)之間也相長時間 而發生鬆脫無法同步旋轉之慮。 【發明内容】 一因此’本發明之主要目的乃在於提供—種排風機馬達 之疋位、、’σ構，其可較為穩固地定位馬達，使風扇之運轉亦 較為〇 本發明之另一目的則在於提供一種排風機馬達之定位 結構’其可較為減少風扇旋轉時之振動。 為達成上述目的，本發明所提供排風機馬達之定位結 構’包含有-基座、一馬達，以及_風扇；該基座具有一 容置空間與-連通於該容置空間之氣流通道，該基座之内 壁具有一馬達定位部，以及一相對於該馬達定位部之轉軸 承置部，該馬達具有一轉軸，該馬達係設於該基座之馬達 定位部，該轉軸穿設於該容置空間，該轉軸之端部則可旋 轉地設於該轉軸承置部；該風扇係設於該馬達之轉軸，當 該轉轴旋轉時係帶動該風扇，藉以使空氣於該氣流通道流 動。 藉此，本發明之排風機即可利用該基座之馬達定位部 及轉韩承置部分別固定該馬達及其轉軸的設計，使設於該 轉軸之風扇可維持於較穩定之結構狀態下運作，增加排風 機之排風效率；同時，該風扇旋轉時之振動也較小。 1335385 【實施方式】 以下茲配合圖式列舉一較佳實施例，用以對本發明之 結構及功效進行詳細說明，其中各圖式之簡要說明如下： 5 第一圖為本發明一較佳實施例之侧視圖丨以及 第二圖為本發明一較佳實施例之剖視圖。 請參閱第-及第二圖所示，係為本發明一較佳實施例 _ 所提供之排風機，排風機包含有一基座（1〇)、一馬達(3〇)， 以及一風扇（50)。 1〇 該基座（10)包括有二外殼(H)，各外殼(11)具有一主部 (13)與一自主部（π)向外倒延伸出之連接部（15)，二外殼(u) 相互對合後，基座(10)内即形成出一氣流通道(17)與一容置 空間（19)。各主部（13)具有多數連通於容置空間（19)之入氣 口（20)，二連接部（15)之間形成出一連通於氣流通道(17)之 15出口(22)。其中一外殼(11)之主部(13)内壁具有一呈凹陷狀 • 之馬達定位部(24)，另一外殼(11)之主部（13)内壁具有一呈 凹陷狀之轉轴承置部(26);馬達定位部(24)或轉軸承置部(26) 可與外设(11)-體成形，或是另外設計成與外殼⑴)相互分 離之構件，再以螺栓將馬達定位部(24)或轉轴承置部(26)組 20裝於外殼(11)。轉軸承置部(26)内設有一軸承(28)，軸承(28) 可為軸套或是自潤軸承等類似物。 該馬達(30)具有一轉軸(32)，馬達(30)係設於基座（1〇) 之容置空間（19)，並由若干螺栓(34)固定於基座（10)之馬達 定位部(24)°轉軸(32)穿設於容置空間（19)，轉軸(32)之端部 6 (36)則於轴承(28)，當馬達(30)驅動轉軸(32)旋轉時，轉轴 (32)之端部(36)即可藉由軸承p8)於轉軸承置部(26)内支撐 轉動。 該風扇(50)具有一環狀框架(52)與多數葉片（54)，該等 5葉片（54)係環設於框架(52)。風扇（50)係設於基座（1〇)之容置 空間（19)，使框架(52)套設於轉軸(32)，各葉片（54)則環繞於 馬達(30)及轉軸(32)外圍。 利用上述組成構件，當馬達(3〇)驅動轉軸(32)旋轉時， 轉軸(32)係直接帶動風扇(5〇)旋轉，利用風扇（5〇)之各葉片 1〇 (54)旋轉即可使空氣自基座（10)外侧流入各入氣口（2〇)，再 經由氣流通道(17)流至出口（22)。由於馬達(3〇)穩固地設於 基座（10)之馬達定位部(24)，而自馬達(3〇)延伸出之轉軸(32) 端部(36)亦穩固地設置於轉軸承置部(26)之軸承(28)，當轉 軸(32)受驅動時即可維持於較佳的中心位置旋轉，進而使設 I5於轉軸(32)之風扇（50)可穩定地同步旋轉，並且可位於正確 之位置將空氣自入氣口（20)吸入基座（1〇)内部，再讓氣流自 出口（22)流出，使空氣之流動更具有效率。 也由於轉轴(32)與風扇（50)係穩固地設置於基座（1〇) 内’轉軸(32)及風扇(50)旋轉時之振動較小，轉軸(32)同時 2〇不會產生下垂或支撐不足之現象，轉軸(32)轉動時也不會產 生較大阻力’使風扇（50)可更為順暢地旋轉。而若要拆_風 扇（50)時’只需分離基座（10)之二外殼(11)，就可將風扇（5〇) 自轉軸(32)拆下，方便使用者進行清洗或維修風扇(5〇)之工 作0 7 1335385 藉此，本發明所提供之排風機利用基座之馬達定位部 及轉軸承置部分別固定馬達及其轉轴的設計，使設於轉軸 之風扇可維持於較穩定之結構狀態下運作，增加排風機之 排風效率；同時，風扇旋轉時之振動也較小。 8 1335385 【圖式簡單說明】 第一圖為本發明一較佳實施例之侧視圖。 第二圖為本發明一較佳實施例之剖視圖。 第三圖為習用排風機之剖視圖。 5 第四圖為另一習用排風機之剖視圖。 【主要元件符號說明】 10基座 11外殼 13主部 15連接部 10 17氣流通道 19容置空間 20入氣口 22出口 24馬達定位部 26轉轴承置部 28轴承 30馬達 32轉轴 34螺栓 15 36端部 50風扇 52框架 54葉片1335385 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to an exhaust fan, and more particularly to a positioning structure of a more stable exhaust fan motor. 5 [Prior Art] The general exhaust fan structure, as shown in the third figure, is mainly provided with a partition (61) in the center of the outer casing (60), a motor (62) fixed to the partition (61), and a motor (62). The two sides are respectively provided with a rotatable rotating shaft (63), and each rotating shaft (63) is further provided with a single-point fixed type axial flow fan (64). When the motor (62) drives each of the rotating shafts (63) to rotate 10, each of the rotating shafts (63) can drive the fan (64) to rotate, so that the fan (64) generates airflow, thereby allowing air to enter from the outer casing (60) (66). ) Flowing out at the exit (67). However, when assembling the above-mentioned single-point fixed type exhaust fan, if the position of the partition plate (61) is skewed and the surface is uneven, the motor (62) is fixed to the partition plate (61), and the two rotating shafts (63) The axis cannot be coaxial with the axis of the two inlets (66), and 15 causes the two fans (64) to deviate from the two inlets (66), thereby affecting the stability of the exhaust fan, and the fan (64) cannot maintain balance. And reduce the exhaust efficiency of the exhaust fan. There is also an exhaust fan, as shown in the fourth figure, which drives the fan (71) by means of an external rotation type driving device (70), and the two ends (72) of the fixing device 20 of the driving device (7〇) are arranged. In the outer casing (73), the outer rotor (74) is interposed between the outer casing (73) and the fixed part, and the fan (71) is disposed on the outer rotor (74), and can be rotated by the outer rotor (7 sentences relative to the fixed stator) The function of driving the air flow can also be achieved. However, when the outer rotor (74) rotates synchronously with the fan (71), a cyclical and frequent vibration occurs between the fan (71) and the air, and the fan (71) Only the support plate (75) is tightly connected to each other with the outer 4 turns 4). If the stable manufacturing condition is not maintained, the fan (f) can not maintain the balance when rotating. The fan (5) and the outer rotor (74) There is also a long time between the occurrence of looseness and the possibility of simultaneous rotation. SUMMARY OF THE INVENTION [Therefore, the main purpose of the present invention is to provide a position of the exhaust fan motor, 'σ structure, which can position the motor relatively stably, so that the operation of the fan is also a further object of the present invention. The invention is to provide a positioning structure of the exhaust fan motor, which can reduce the vibration when the fan rotates. In order to achieve the above object, the positioning structure of the exhaust fan motor provided by the present invention includes a base, a motor, and a fan. The base has an accommodation space and an air flow passage communicating with the accommodation space. The inner wall of the base has a motor positioning portion, and a rotating bearing portion with respect to the motor positioning portion, the motor has a rotating shaft, and the motor is disposed on the motor positioning portion of the base, and the rotating shaft is disposed in the capacity The fan is rotatably disposed at the rotating bearing portion; the fan is disposed on the rotating shaft of the motor, and drives the fan when the rotating shaft rotates, so that air flows in the airflow passage. Therefore, the exhaust fan of the present invention can fix the design of the motor and the rotating shaft thereof by using the motor positioning portion and the rotating Korean bearing portion of the base, so that the fan disposed on the rotating shaft can be maintained in a relatively stable structure. Operation, increasing the exhaust efficiency of the exhaust fan; at the same time, the vibration of the fan is also small when rotating. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings in which: FIG. The side view 丨 and the second figure are cross-sectional views of a preferred embodiment of the present invention. Referring to the first and second figures, the exhaust fan is provided in a preferred embodiment of the present invention. The exhaust fan includes a base (1〇), a motor (3〇), and a fan (50). ). The base (10) includes two outer casings (H), and each outer casing (11) has a connecting portion (15) with a main portion (13) and an autonomous portion (π) extending outwardly, and two outer casings (15). u) After the mutual alignment, an air flow passage (17) and an accommodation space (19) are formed in the base (10). Each main portion (13) has a plurality of air inlets (20) connected to the accommodating space (19), and an outlet (22) communicating with the air flow passages (17) is formed between the two connecting portions (15). The inner wall of the main portion (13) of one of the outer casings (11) has a motor positioning portion (24) having a concave shape, and the inner wall of the main portion (13) of the other outer casing (11) has a concave bearing portion. (26); the motor positioning portion (24) or the rotating bearing portion (26) may be formed integrally with the peripheral device (11), or may be separately designed to be separated from the outer casing (1), and then the motor positioning portion is bolted. (24) or the set of rotating bearing parts (26) 20 is mounted on the outer casing (11). A bearing (28) is disposed in the bearing bearing portion (26), and the bearing (28) can be a bushing or a self-lubricating bearing or the like. The motor (30) has a rotating shaft (32), and the motor (30) is disposed on the accommodating space (19) of the base (1), and is fixed to the motor of the base (10) by a plurality of bolts (34). The (24)° rotating shaft (32) is disposed in the accommodating space (19), and the end portion 6 (36) of the rotating shaft (32) is in the bearing (28). When the motor (30) drives the rotating shaft (32) to rotate, The end portion (36) of the rotating shaft (32) can be supported and rotated in the rotating bearing portion (26) by the bearing p8). The fan (50) has an annular frame (52) and a plurality of blades (54), and the five blades (54) are looped to the frame (52). The fan (50) is disposed in the accommodating space (19) of the base (1), so that the frame (52) is sleeved on the rotating shaft (32), and each of the blades (54) surrounds the motor (30) and the rotating shaft (32). )periphery. With the above-mentioned constituent members, when the motor (3〇) drives the rotating shaft (32) to rotate, the rotating shaft (32) directly drives the fan (5〇) to rotate, and the blades 1(54) of the fan (5〇) can be rotated. Air is allowed to flow from the outside of the base (10) into each air inlet (2〇), and then flows to the outlet (22) via the air flow passage (17). Since the motor (3〇) is firmly fixed to the motor positioning portion (24) of the base (10), the end portion (36) of the rotating shaft (32) extending from the motor (3〇) is also stably disposed on the rotating bearing The bearing (28) of the portion (26) can be rotated at a preferred center position when the rotating shaft (32) is driven, thereby enabling the fan (50) of the rotating shaft (32) to stably rotate synchronously, and The air can be placed in the correct position to draw air from the air inlet (20) into the base (1〇), and then let the air flow out from the outlet (22), so that the air flow is more efficient. Also, since the rotating shaft (32) and the fan (50) are firmly disposed in the base (1〇), the vibration of the rotating shaft (32) and the fan (50) is small, and the rotating shaft (32) is not simultaneously There is a phenomenon of sagging or insufficient support, and the shaft (32) does not generate a large resistance when it rotates, so that the fan (50) can be rotated more smoothly. If you want to remove the fan (50), you only need to separate the outer casing (11) of the base (10), you can remove the fan (5〇) from the rotating shaft (32), which is convenient for users to clean or repair the fan. (5〇) Operation 0 7 1335385 Accordingly, the exhaust fan provided by the present invention uses the motor positioning portion and the rotating bearing portion of the base to fix the motor and its rotating shaft respectively, so that the fan provided on the rotating shaft can be maintained at It operates under a more stable structural state, increasing the exhaust efficiency of the exhaust fan; at the same time, the vibration when the fan rotates is also small. 8 1335385 BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a side view of a preferred embodiment of the present invention. The second figure is a cross-sectional view of a preferred embodiment of the present invention. The third picture is a cross-sectional view of a conventional exhaust fan. 5 The fourth figure is a cross-sectional view of another conventional exhaust fan. [Main component symbol description] 10 pedestal 11 housing 13 main portion 15 connecting portion 10 17 air flow passage 19 accommodating space 20 air inlet 22 outlet 24 motor positioning portion 26 rotation bearing portion 28 bearing 30 motor 32 shaft 34 bolt 15 36 End 50 fan 52 frame 54 blade