TWI648476B - Vent fan - Google Patents

Abstract

一種通風扇，用以解決習知通風扇常因電源線受拉扯而故障且維護不易的問題。本發明的通風扇包含：一主框座，設有一第一旋扣部及一第一固線凸部；及一風扇，設有一第二旋扣部及一第二固線凸部，旋動該風扇使該第二旋扣部結合該主框座的第一旋扣部時，該第二固線凸部與該第一固線凸部共同形成一固線空間。 A ventilating fan is used to solve the problem that the conventional ventilating fan often fails due to pulling of the power cord and is difficult to maintain. The ventilation fan of the present invention includes: a main frame base provided with a first rotary buckle portion and a first fixed wire convex portion; and a fan provided with a second rotary buckle portion and a second fixed wire convex portion, which rotates When the second buckle is combined with the first buckle of the main frame base by the fan, the second fixed line convex portion and the first fixed line convex portion together form a fixed space.

Description

通風扇 Ventilation fan

本發明係關於一種風扇，尤其是一種通風扇。 The present invention relates to a fan, especially a ventilation fan.

按，習知的通風扇都具有一扇框體、一葉輪及一驅動單元，以由該驅動單元驅動該葉輪在該扇框體中旋轉。其中，該驅動單元具有穿出該扇框體的一電源線，該電源線可連接至電源以對該葉輪提供運轉所需的電力。惟，在搬運或安裝通風扇的過程中，有些使用者會直接抓取電源線以提起該通風扇，而整條電源線僅由在該扇框體中的一端銲接結合至該驅動單元，故拉扯該電源線時，銲接處將因直接受力而易受損，導致電力的傳遞時好時壞，或甚至有完全無法傳遞電力等故障情況。然而，由於搬運或安裝通風扇的場合中幾乎不會有能夠重新銲接電源線的機會，故一旦發生前述的故障情況，整個通風扇就只能被當作不良品而予以淘汰。 According to the conventional ventilation fans, each fan has a frame, an impeller and a driving unit, so that the driving unit drives the impeller to rotate in the frame. Wherein, the driving unit has a power line passing through the fan frame, and the power line can be connected to a power source to provide the impeller with the power required for operation. However, during the process of moving or installing the ventilation fan, some users will directly grab the power cord to lift the ventilation fan, and the entire power cord is only welded to the drive unit by one end in the fan frame, so When the power cord is pulled, the welding place will be easily damaged due to direct force, resulting in good or bad power transmission, or even failures such as failure to transmit power at all. However, since there is almost no chance of being able to re-solder the power cord when transporting or installing the ventilation fan, once the aforementioned failure situation occurs, the entire ventilation fan can only be regarded as a defective product and eliminated.

再且，一般測試通風扇是否能正常運作的時機常是在購買時與安裝好之後，而該通風扇的故障原因常發生在搬運或安裝的過程中；因此，使用者常以為安裝的是可正常運作的通風扇，卻在安裝好之後才發現故障而又要進行拆卸的動作，造成使用者非常大的困擾，以致對製造業者的不諒解，但實際上造成通風扇故障的原因是使用者的不當操作而非製造業者，因而衍生許多消費糾紛的問題。 Furthermore, the timing for testing the normal operation of the ventilation fan is usually at the time of purchase and after installation, and the cause of the failure of the ventilation fan often occurs during the process of transportation or installation; therefore, users often think that the installation is possible. The normal operation of the ventilation fan, but only after the installation is found and the failure to perform the disassembly action, causing users a lot of distress, so that the manufacturers do not understand, but in fact, the reason for the failure of the ventilation fan is the user Improper operation rather than the manufacturer, thus leading to many consumer disputes.

另請參照第1圖，其係一種習知的通風扇9，該習知的通風扇9具有一扇框體91、一葉輪92及一驅動單元93，該扇框體91的兩端分 別具有一導風口911，該扇框體91設有一基座912位於該二導風口911之間，該基座912由數個肋條913連接該扇框體91的內壁面；該驅動單元93結合於該基座912上，該葉輪92連接該驅動單元93，以由該驅動單元93驅動該葉輪92在該扇框體91中旋轉。類似於該習知的通風扇9的一實施例已揭露於中國公告第205013346號「通風扇」專利案當中。 Please also refer to FIG. 1, which is a conventional ventilation fan 9. The conventional ventilation fan 9 has a fan frame 91, an impeller 92, and a driving unit 93. The two ends of the fan frame 91 are divided into two parts. The fan frame 91 is provided with a base 912 located between the two air ducts 911. The base 912 is connected to the inner wall surface of the fan frame 91 by a plurality of ribs 913. The driving unit 93 is combined On the base 912, the impeller 92 is connected to the driving unit 93, so that the driving unit 93 drives the impeller 92 to rotate in the fan frame 91. An embodiment similar to the conventional ventilation fan 9 has been disclosed in the “Ventilation Fan” patent case of China Announcement No. 205013346.

其中，該基座912、該數個肋條913及該扇框體91的內壁面係一體成型相連接，而該驅動單元93係藉由螺絲等鎖固元件結合定位至該基座912，再供該葉輪92可旋轉地結合。因此，當該驅動單元93或該葉輪92需要更換時，由於直接拆卸不易，故使用者多會需要將整組通風扇9自安裝部位(例如：天花板、牆面或門窗上)拆下來，再進行該驅動單元93或該葉輪92的拆卸及組裝，十分費時耗工。 Among them, the base 912, the plurality of ribs 913, and the inner wall surface of the fan frame 91 are integrally connected, and the driving unit 93 is combined and positioned to the base 912 by a locking element such as a screw. The impeller 92 is rotatably coupled. Therefore, when the drive unit 93 or the impeller 92 needs to be replaced, since it is not easy to directly disassemble, the user will often need to remove the entire group of ventilation fans 9 from the installation site (for example, the ceiling, the wall or the door or window), and then Disassembling and assembling the driving unit 93 or the impeller 92 is very time-consuming and labor-intensive.

有鑑於此，習知的通風扇確實仍有加以改善之必要。 In view of this, the conventional ventilation fan does still need to be improved.

為解決上述問題，本發明之目的係提供一種通風扇，其風扇結合至主框座後，可直接形成一固線空間來限位電源線，故即使從外部抓取電源線以提起該通風扇，該電源線銲接結合風扇的定子組的部位也不易直接受到拉扯力而受損。 In order to solve the above problems, an object of the present invention is to provide a ventilation fan. After the fan is coupled to the main frame, a fixed line space can be directly formed to limit the power cord. Therefore, even if the power cord is grasped from the outside to lift the ventilation fan The parts of the stator group where the power line is welded and combined with the fan are also not easily damaged by the pulling force.

本發明之另一目的係提供一種通風扇，其風扇係可拆卸地結合至主框座，以提升拆卸及組裝風扇的操作便利性。 Another object of the present invention is to provide a ventilation fan whose fan is detachably coupled to the main frame base to improve the operation convenience of disassembling and assembling the fan.

本發明以下所述方向性或其近似用語，例如「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 of the present invention described below or its approximate terms, such as "upper (top)", "lower (bottom)", "inside", "outside", "side", etc., are mainly referred to the directions of the attached drawings. The directional or similar terms are only used to help explain and understand the embodiments of the present invention, but not to limit the present invention.

本發明的通風扇，包含：一主框座，該主框座設有一第一旋扣部及一第一固線凸部；及一風扇，該風扇設有一第二旋扣部及一第二固 線凸部，旋動該風扇使該第二旋扣部結合該主框座的第一旋扣部時，該第二固線凸部與該第一固線凸部共同形成一固線空間。 The ventilating fan of the present invention includes: a main frame base provided with a first rotary buckle portion and a first fixed line convex portion; and a fan provided with a second rotary buckle portion and a second solid When the fan is rotated, the second screwing portion is combined with the first screwing portion of the main frame base when the fan is rotated, the second screwing portion and the first screwing portion together form a fixed space.

據此，本發明的通風扇，其風扇結合至主框座後，可直接形成一固線空間來限位電源線；如此一來，即使從外部抓取電源線以提起該通風扇，拉扯力多會在傳遞至電源線位於該固線空間中的部位時就分散到該主框座，使得該電源線銲接結合風扇的定子組的部位不易直接受到拉扯力而受損，故幾乎不會因電源線受拉扯而發生風扇故障的情況，可減少更換及修理不良品所衍生的各項成本與不便，且能有效減少消費糾紛。 According to this, after the fan of the present invention is coupled to the main frame base, a fixed-line space can be directly formed to limit the power cord; in this way, even if the power cord is grasped from the outside to lift the ventilator, the pulling force is pulled. Most of them will be scattered to the main frame when it is transmitted to the part where the power cord is located in the fixed space, so that the parts of the stator group where the power cord is welded and combined with the fan are not easily damaged by the pulling force, so it is hardly caused by If the power cord is pulled and a fan fails, it can reduce the costs and inconveniences caused by replacing and repairing defective products, and can effectively reduce consumer disputes.

此外，本發明的通風扇，其風扇係可拆卸地結合至主框座，故該風扇需要更換或維修保養時，可直接將原本結合在主框座上的風扇拆卸下來，再將更換或維修保養過的風扇裝上去即可，並不需要將整組通風扇自安裝的固定物上拆下來，故可大幅提升拆卸及組裝風扇時的操作便利性。 In addition, the ventilating fan of the present invention is detachably coupled to the main frame base. Therefore, when the fan needs to be replaced or maintained, the fan originally attached to the main frame base can be directly removed, and then replaced or repaired. The maintained fans can be installed, and there is no need to remove the entire group of ventilation fans from the mounting fixture, so the operation convenience when disassembling and assembling the fans can be greatly improved.

其中，該主框座具有一擴口框及一導流管，該擴口框及該導流管相連接且內部相連通，該第一旋扣部設於鄰近該擴口框連接該導流管處；該風扇具有一扇框及一扇輪，該扇輪可旋轉地設於該扇框的一環牆內，該第二旋扣部設於該環牆的一軸向端部。如此，具有提升結合風扇與主框座時的操作便利性等功效。 Wherein, the main frame base has a flared frame and a diversion tube, the flared frame and the diversion tube are connected and communicated with each other internally, and the first rotary buckle portion is provided adjacent to the flared frame to connect the diversion flow. At the pipe; the fan has a fan frame and a fan wheel, the fan wheel is rotatably disposed in a ring wall of the fan frame, and the second rotary buckle portion is provided at an axial end of the ring wall. In this way, it has the effects of improving the convenience of operation when the fan and the main frame base are combined.

其中，該風扇具有一定子組供該扇輪可旋轉地結合，該定子組具有一電源線，該主框座在鄰近該擴口框連接該導流管處設有一出線口，該電源線從該出線口穿出該主框座。如此，具有提升組裝便利性等功效。 Wherein, the fan has a certain sub-group for the fan wheels to be rotatably combined, the stator group has a power line, and the main frame seat is provided with a cable outlet near the flared frame connected to the deflector, and the power line Pass the main frame base through the outlet. In this way, it has effects such as improving the convenience of assembly.

其中，該電源線具有一線寬，該固線空間的寬度較佳小於該線寬的2倍。如此，具有提升對電源線的限位效果等功效。 The power cord has a line width, and the width of the fixed line space is preferably less than twice the line width. In this way, it has the effects of improving the limiting effect on the power cord.

其中，該第一固線凸部鄰設於該出線口處並朝該風扇的一中 心線凸出。如此，具有提升組裝便利性等功效。 Wherein, the first fixed-line convex portion is adjacent to the outlet and faces a middle of the fan. Heart line is protruding. In this way, it has effects such as improving the convenience of assembly.

其中，該扇框的環牆設有一缺口，該第二固線凸部鄰接該缺口。如此，具有提升組裝便利性等功效。 The annular wall of the fan frame is provided with a notch, and the second fixed line convex portion is adjacent to the notch. In this way, it has effects such as improving the convenience of assembly.

其中，該第二固線凸部在最遠離該中心線的表面設有數個凸塊。如此，可由該數個凸塊提升夾固電源線的效果。 Wherein, the second fixed line convex portion is provided with a plurality of bumps on a surface farthest from the center line. In this way, the effect of clamping the power cord can be enhanced by the plurality of bumps.

其中，該扇框設有一擋線板鄰近該缺口，該擋線板位於該第二固線凸部與該環牆較遠離該缺口的軸向端部之間，在該風扇的軸向上，該第二固線凸部及該缺口均位於該擋線板的設置範圍內。如此，電源線從該缺口穿出該扇框後可被該擋線板擋止，具有提升對電源線的限位效果等功效。 Wherein, the fan frame is provided with a wire blocking plate adjacent to the gap, and the wire blocking plate is located between the second fixed line convex portion and the axial end of the ring wall farther away from the gap, and in the axial direction of the fan, the The second fixed line convex portion and the notch are both located within the setting range of the line blocking plate. In this way, the power cord can be stopped by the wire blocking plate after passing out of the fan frame through the notch, and has the effects of improving the limit effect on the power cord.

其中，該扇框具有一底座設於該環牆內，該底座設有一線槽，該線槽延伸至該缺口，該定子組設於該底座，該電源線設於該線槽中並從該缺口穿出該扇框。如此，具有提升組裝便利性等功效。 Wherein, the fan frame has a base provided in the ring wall, the base is provided with a wire trough, the wire trough extends to the gap, the stator is arranged on the base, and the power cord is provided in the wire trough and from the The notch penetrates the fan frame. In this way, it has effects such as improving the convenience of assembly.

其中，該導流管下半部的內周面形成有一防逆流部，該導流管的壁厚於該防逆流部處係從鄰近該擴口框處朝外漸縮，以形成由內向外傾斜狀。如此，使液體不易從外部流入擴口框中，可避免該風扇毀損。 Wherein, a backflow prevention portion is formed on the inner peripheral surface of the lower half of the diversion tube, and the wall thickness of the diversion tube is tapered outward from the vicinity of the flared frame at the backflow prevention portion to form an inside-out direction. Sloping. In this way, it is difficult for the liquid to flow into the flaring frame from the outside, and the fan can be prevented from being damaged.

其中，該防逆流部的傾斜角度較佳為1~2度。如此，可提升防止液體從外部流入該擴口框的效果。 Among them, the inclination angle of the backflow prevention portion is preferably 1 to 2 degrees. In this way, the effect of preventing liquid from flowing into the flare frame from the outside can be enhanced.

其中，該擴口框的外部背面呈現朝該導流管漸縮的型態。如此，具有提升組裝便利性等功效。 Wherein, the outer back surface of the flared frame is tapered toward the flow guiding tube. In this way, it has effects such as improving the convenience of assembly.

其中，該第一旋扣部具有一防脫板，該防脫板連接該擴口框的內表面以形成一旋移槽，該防脫板設有連通該旋移槽的至少一對位缺槽及至少一定位部，該第二旋扣部具有至少一旋扣件，該旋扣件設有一定位部以與該第一旋扣部的定位部相互結合。如此，該結構簡易而便於製造及組裝，具有降低製造成本及提升組裝便利性等功效。 Wherein, the first turn-fastening portion has a slip-off prevention plate, which is connected to the inner surface of the flared frame to form a rotation groove, and the slip-off prevention plate is provided with at least one pair of positional gaps communicating with the rotation groove. A slot and at least one positioning portion, the second turn-locking portion has at least one turn-fastening element, and the turn-locking element is provided with a positioning portion to be combined with the positioning portion of the first turn-locking portion. In this way, the structure is simple and easy to manufacture and assemble, and has the effects of reducing manufacturing costs and improving assembly convenience.

其中，該第一旋扣部的定位部為一卡掣口，該第二旋扣部的定位部為一彈片，該彈片對位卡抵至對應的卡掣口。如此，具有提升組裝便利性等功效。 Wherein, the positioning portion of the first turn-locking portion is a latch, and the positioning portion of the second turn-locking portion is an elastic piece, and the elastic piece is aligned to the corresponding latch opening. In this way, it has effects such as improving the convenience of assembly.

其中，該第一旋扣部的定位部及該第二旋扣部的定位部分別為一鎖孔，該二鎖孔相對位以供一鎖固元件貫穿鎖固。如此，具有提升組裝便利性等功效。 Wherein, the positioning portion of the first screwing portion and the positioning portion of the second screwing portion are respectively a lock hole, and the two lock holes are opposite to each other for a locking element to pass through the lock. In this way, it has effects such as improving the convenience of assembly.

其中，該對位缺槽及該定位部的數量為數個，並環設於該防脫板，該旋扣件的數量對應該對位缺槽的數量。如此，具有提升該主框座與該風扇的結合穩固性等功效。 The number of the alignment gaps and the positioning portions are several, and the loops are arranged on the anti-detachment plate. The number of the rotary fasteners corresponds to the number of the alignment gaps. In this way, it has the effects of improving the combination and stability of the main frame base and the fan.

〔本發明〕 〔this invention〕

1‧‧‧主框座 1‧‧‧ main frame

1a‧‧‧擴口框 1a‧‧‧flare box

1b‧‧‧導流管 1b‧‧‧Diversion tube

11‧‧‧第一旋扣部 11‧‧‧The first turn button

111‧‧‧防脫板 111‧‧‧anti-fall off plate

112‧‧‧旋移槽 112‧‧‧rotating groove

113‧‧‧對位缺槽 113‧‧‧ Missing slot

114‧‧‧定位部 114‧‧‧Positioning Department

114a‧‧‧卡掣口 114a‧‧‧Clip

114b‧‧‧鎖孔 114b‧‧‧ keyhole

12‧‧‧第一固線凸部 12‧‧‧ the first fixed line protrusion

13‧‧‧出線口 13‧‧‧outlet

14‧‧‧防逆流部 14‧‧‧Backflow prevention department

2‧‧‧風扇 2‧‧‧fan

2a‧‧‧扇框 2a‧‧‧fan frame

2b‧‧‧扇輪 2b‧‧‧fan

2c‧‧‧定子組 2c‧‧‧Stator set

21‧‧‧環牆 21‧‧‧ ring wall

211‧‧‧缺口 211‧‧‧ gap

22‧‧‧底座 22‧‧‧ base

221‧‧‧線槽 221‧‧‧Wire trunking

23‧‧‧電源線 23‧‧‧Power cord

24‧‧‧第二旋扣部 24‧‧‧Second Rotary Buckle

241‧‧‧旋扣件 241‧‧‧Swivel fastener

242‧‧‧定位部 242‧‧‧Positioning Department

242a‧‧‧彈片 242a‧‧‧ shrapnel

242b‧‧‧鎖孔 242b‧‧‧Keyhole

25‧‧‧第二固線凸部 25‧‧‧ the second fixed line protrusion

251‧‧‧凸塊 251‧‧‧ bump

26‧‧‧擋線板 26‧‧‧Liner

3‧‧‧面板 3‧‧‧ Panel

31‧‧‧通風口 31‧‧‧Vent

B‧‧‧固定物 B‧‧‧Fixture

L‧‧‧中心線 L‧‧‧ Centerline

N‧‧‧固線空間 N‧‧‧Fixed Space

S‧‧‧鎖固元件 S‧‧‧Locking element

W1‧‧‧線寬 W1‧‧‧line width

W2‧‧‧寬度 W2‧‧‧Width

〔習用〕 〔Usually〕

9‧‧‧通風扇 9‧‧‧ ventilation fan

91‧‧‧扇框體 91‧‧‧fan frame

911‧‧‧導風口 911‧‧‧air duct

912‧‧‧基座 912‧‧‧base

913‧‧‧肋條 913‧‧‧ rib

92‧‧‧葉輪 92‧‧‧ Impeller

93‧‧‧驅動單元 93‧‧‧Drive unit

第1圖：一種習知通風扇的結構示意圖。 Figure 1: Schematic diagram of a conventional ventilation fan.

第2圖：本發明一實施例的立體分解結構示意圖。 FIG. 2 is a schematic diagram of a three-dimensional exploded structure of an embodiment of the present invention.

第3圖：本發明一實施例的局部剖視立體分解結構示意圖。 FIG. 3 is a partially cutaway three-dimensional exploded structure diagram of an embodiment of the present invention.

第4圖：本發明一實施例將風扇旋扣結合主框座時的剖視結構示意圖。 FIG. 4 is a schematic cross-sectional view of a structure in which a fan rotary buckle is combined with a main frame base according to an embodiment of the present invention.

第5圖：本發明一實施例將風扇旋扣結合主框座後的剖視結構示意圖。 FIG. 5 is a cross-sectional structural diagram of a fan frame combined with a main frame base according to an embodiment of the present invention.

第6圖：第5圖A部分的局部放大示意圖。 Fig. 6: A partially enlarged schematic view of part A of Fig. 5.

第7圖：本發明一實施例的實施示意圖。 FIG. 7 is an implementation schematic diagram of an embodiment of the present invention.

為讓本發明之上述及其他目的、特徵及優點能更明顯易懂，下文特舉本發明之較佳實施例，並配合所附圖式，作詳細說明如下：請參照第2圖，其係本發明通風扇的一實施例，該通風扇大致上包一主框座1及一風扇2，該風扇2可拆卸地結合該主框座1。 In order to make the above and other objects, features, and advantages of the present invention more comprehensible, the following describes the preferred embodiments of the present invention and the accompanying drawings in detail, as follows: Please refer to FIG. According to an embodiment of the ventilation fan of the present invention, the ventilation fan generally includes a main frame base 1 and a fan 2, and the fan 2 is detachably combined with the main frame base 1.

請參照第2、7圖，該主框座1可包含一擴口框1a及一導流管1b，該擴口框1a及該導流管1b相連接且內部相連通；該主框座1結合至一固定物B(本發明所定義的固定物B係指如牆體、天花板、玻璃門窗或其他在建築裝潢上可支撐及供設置通風扇的物體)時，該擴口框1a可朝向室內，而該導流管1b的末端則朝向室外，以導引室內的氣體通過該風扇2及該導流管1b而排出至室外，或是導引室外的氣體通過該導流管1b及該風扇2而吹入室內。 Referring to FIGS. 2 and 7, the main frame base 1 may include a flared frame 1 a and a deflector tube 1 b. The flared frame 1 a and the deflector tube 1 b are connected and communicated internally; the main frame base 1 When bound to a fixed object B (the fixed object B defined in the present invention refers to, for example, a wall, a ceiling, a glass door or a window, or other objects that can be supported and provided with a ventilation fan on the building decoration), the flared frame 1a may face Indoors, and the ends of the deflector 1b are directed to the outside, to guide the indoor gas through the fan 2 and the deflector 1b to be discharged to the outside, or to guide the outdoor gas through the deflector 1b and the The fan 2 is blown into the room.

請參照第2、3圖，詳言之，該主框座1內設有一第一旋扣部11，以供該風扇2旋扣結合；該第一旋扣部11可設於鄰近該擴口框1a連接該導流管1b處。例如但不限制地，本實施例的第一旋扣部11具有一防脫板111，該防脫板111連接該擴口框1a的內表面，並與該擴口框1a的內表面之間形成一旋移槽112，該防脫板111上另設有至少一對位缺槽113及至少一定位部114，該至少一對位缺槽113連通該旋移槽112，該定位部114則可以是一卡掣口114a或一鎖孔114b或如本實施例圖式所示同時設有兩者，且該定位部114亦連通該旋移槽112。其中，該對位缺槽113及該定位部114的數量較佳為數個，並環設於該防脫板111，以提升旋扣結合該風扇2的穩固性。 Please refer to FIGS. 2 and 3. In detail, the main frame base 1 is provided with a first screwing portion 11 for the fan 2 to be screwed together; the first screwing portion 11 may be disposed adjacent to the flaring. The frame 1a is connected to the deflector 1b. For example, without limitation, the first turn-locking portion 11 in this embodiment has a detachment prevention plate 111 connected to the inner surface of the flared frame 1a and between the flared frame 1a and the inner surface of the flared frame 1a. A rotation groove 112 is formed, and at least one pair of positional notches 113 and at least one positioning portion 114 are provided on the anti-dropout plate 111. The at least one pair of positional notches 113 communicate with the rotation groove 112, and the positioning portion 114 is It can be a clip opening 114a or a lock hole 114b or both as shown in the drawing of the embodiment, and the positioning portion 114 is also connected to the rotation groove 112. Among them, the number of the alignment notches 113 and the positioning portions 114 is preferably several, and they are arranged on the anti-detachment plate 111 in order to improve the stability of the rotary buckle and the fan 2.

該主框座1內設有一第一固線凸部12，另在鄰近該擴口框1a連接該導流管1b處設一出線口13，該出線口13貫穿該主框座1的內、外表面，該第一固線凸部12則鄰設於該出線口13處並朝該風扇2的一中心線L凸出。 The main frame base 1 is provided with a first fixed wire convex portion 12, and a wire outlet 13 is provided adjacent to the flared frame 1a and connected to the deflector 1b. The wire outlet 13 runs through the main frame base 1. On the inner and outer surfaces, the first fixed-line convex portion 12 is adjacent to the outlet 13 and protrudes toward a centerline L of the fan 2.

又，請配合參照第7圖，本實施例可選擇使該擴口框1a的外部背面呈現朝該導流管1b漸縮的型態，減少該擴口框1a接觸該固定物B的面積，可避免該固定物B的平整度不佳時造成該主框座1不易組裝的問題；甚至還可更進一步地使該擴口框1a呈深色而該面板3呈淺色，令該 擴口框1a可呈現出較為輕薄的視覺效果，提升質感。 In addition, please refer to FIG. 7. In this embodiment, the outer surface of the flared frame 1a may be selected to be gradually tapered toward the flow guide tube 1b, and the area where the flared frame 1a contacts the fixture B may be reduced. It can avoid the problem that the main frame base 1 is not easy to assemble when the flatness of the fixture B is not good; it can even further make the flared frame 1a dark and the panel 3 light, so that the The flared frame 1a can present a relatively thin and light visual effect, improving the texture.

此外，該導流管1b下半部的內周面還可形成有一防逆流部14，該導流管1b的壁厚於該防逆流部14處係從鄰近該擴口框1a處朝外漸縮，以形成由內向外傾斜狀，而傾斜角度較佳為1~2度。據此，即使室外有液體(例如雨水)滲入該導流管1b，該防逆流部14仍可導引液體向外排掉，使液體不易流入該擴口框1a中；同時，也可不必再為了防止液體滲入而在該固定物B上鑽設傾斜的孔洞供傾斜地安裝該導流管1b，具有提升鑽孔時的施工便利性等功效。 In addition, a backflow prevention portion 14 may be formed on the inner peripheral surface of the lower half of the deflection tube 1b. The wall thickness of the deflection tube 1b is greater than that of the backflow prevention portion 14 and gradually outwards from the vicinity of the flared frame 1a. Shrink to form an inclined shape from the inside out, and the inclination angle is preferably 1 to 2 degrees. According to this, even if liquid (for example, rainwater) infiltrates the diversion tube 1b outdoors, the backflow prevention portion 14 can still guide the liquid to drain outward, so that the liquid cannot easily flow into the flared frame 1a; meanwhile, it is unnecessary to In order to prevent liquid from penetrating, an inclined hole is drilled in the fixture B for obliquely installing the flow guide pipe 1b, and has the effects of improving the convenience of construction during drilling and the like.

請再參照第2、3圖，該風扇2可包含一扇框2a、一扇輪2b及一定子組2c，該扇輪2b係可由該定子組2c驅動旋轉地設於該扇框2a的一環牆21內。其中，該扇輪2b的葉片型態可決定該扇輪2b運轉時的驅風方向，本實施例採用可使氣流從室內流向該導流管1b的扇輪2b為例進行說明，以將該通風扇作為排風扇使用，但不以此為限；亦即，在其他實施例中，可採用使氣流通過該導流管1b而流向室內的扇輪2b，以將該通風扇作為進風扇使用。 Please refer to FIGS. 2 and 3 again. The fan 2 may include a fan frame 2a, a fan 2b, and a certain subgroup 2c. The fan wheel 2b is driven by the stator group 2c and is rotatably provided on a ring of the fan frame 2a. Inside the wall 21. The blade shape of the fan wheel 2b can determine the driving direction of the fan wheel 2b during operation. In this embodiment, the fan wheel 2b that allows airflow from the room to the deflector 1b is used as an example to explain The ventilating fan is used as an exhaust fan, but is not limited thereto; that is, in other embodiments, a fan wheel 2b that passes airflow through the air guide tube 1b to the room may be used as the intake fan.

詳言之，本實施例的扇框2a另於該環牆21內設有一底座22，該底座22可例如一體成型連接該環牆21的內壁面，該定子組2c可組裝定位在該底座22上，並供該扇輪2b可旋轉地結合，該扇輪2b的旋轉軸線形成前述的中心線L。又，該環牆21的一軸向端部設有一缺口211，該底座22則設有一線槽221，該線槽221延伸至該缺口211；該定子組2c具有一電源線23，該電源線23設於該線槽221中，並沿著該線槽221從該缺口211穿出該扇框2a。 In detail, the fan frame 2a of this embodiment is further provided with a base 22 in the ring wall 21. The base 22 can be integrally connected to the inner wall surface of the ring wall 21, and the stator group 2c can be assembled and positioned on the base 22 The fan wheel 2b is rotatably coupled to each other, and the rotation axis of the fan wheel 2b forms the aforementioned centerline L. In addition, an axial end of the annular wall 21 is provided with a notch 211, and the base 22 is provided with a wire slot 221, which extends to the notch 211; the stator group 2c has a power line 23, and the power line 23 is provided in the wire groove 221, and passes through the fan frame 2a from the notch 211 along the wire groove 221.

該風扇2的扇框2a設有一第二旋扣部24，使該風扇2可以由該第二旋扣部24旋扣結合該主框座1的第一旋扣部11。該第二旋扣部24較佳設於該環牆21的一軸向端部，以提升結合該風扇2與該主框座1 時的操作便利性。 The fan frame 2 a of the fan 2 is provided with a second screwing portion 24, so that the fan 2 can be screwed with the first screwing portion 11 of the main frame base 1 by the second screwing portion 24. The second turning portion 24 is preferably provided at an axial end portion of the ring wall 21 to enhance the combination of the fan 2 and the main frame base 1. Convenient operation.

例如但不限制地，本實施例的第二旋扣部24具有至少一旋扣件241，該旋扣件241上可設有一定位部242，用以與該第一旋扣部11的定位部114相互結合。舉例而言，該第一旋扣部11的定位部114是一卡掣口114a時，該第二旋扣部24的定位部242可以是一彈片242a；該第一旋扣部11的定位部114是一鎖孔114b時，該第二旋扣部24的定位部242亦可以是一鎖孔242b，以於該二鎖孔114b、242b相對位時，由一鎖固元件S貫穿鎖固。在本實施例中，該第一旋扣部11的定位部114同時設有一卡掣口114a及一鎖孔114b，故該第二旋扣部24的定位部242則對應包含一彈片242a及一鎖孔242b。又，該第二旋扣部24的旋扣件241數量較佳對應該第一旋扣部11的對位缺槽113數量。 For example, without limitation, the second screw-fastening portion 24 of this embodiment has at least one screw-fastening member 241, and the screw-fastening member 241 may be provided with a positioning portion 242 for communicating with the positioning portion of the first screw-fastening portion 11 114 combined with each other. For example, when the positioning portion 114 of the first turning portion 11 is a latching opening 114a, the positioning portion 242 of the second turning portion 24 may be an elastic piece 242a; the positioning portion of the first turning portion 11 When 114 is a locking hole 114b, the positioning portion 242 of the second turn-locking portion 24 may also be a locking hole 242b, so that when the two locking holes 114b and 242b are opposite to each other, a locking element S penetrates and locks. In this embodiment, the positioning portion 114 of the first turn-locking portion 11 is provided with a latch 114a and a lock hole 114b at the same time. Therefore, the positioning portion 242 of the second turn-locking portion 24 correspondingly includes an elastic piece 242a and a Keyhole 242b. In addition, the number of the rotation fasteners 241 of the second rotation fastening portion 24 preferably corresponds to the number of the alignment notches 113 of the first rotation fastening portion 11.

該風扇2的扇框2a另設有一第二固線凸部25，該第二固線凸部25較佳鄰接該環牆21的缺口211。該第二固線凸部25可另於最遠離該中心線L的表面設有數個凸塊251，以由該數個凸塊251提升夾固該電源線23的效果(容後詳述)。此外，該風扇2的扇框2a還可設有一擋線板26，該擋線板26鄰近該缺口211，且該擋線板26位於該第二固線凸部25與該環牆21較遠離該缺口211的軸向端部之間；在該風扇2的軸向上，較佳使該第二固線凸部25及該缺口211均位於該擋線板26的設置範圍內。據此，該定子組2c的電源線23從該缺口211穿出該扇框2a後，可被該擋線板26擋止而無法再往該環牆21較遠離該缺口211的軸向端部移動。 The fan frame 2 a of the fan 2 is further provided with a second fixed line protrusion 25, and the second fixed line protrusion 25 is preferably adjacent to the notch 211 of the ring wall 21. The second fixed-line protruding portion 25 may be further provided with a plurality of bumps 251 on the surface farthest from the center line L, so as to enhance the effect of clamping the power cord 23 by the plurality of bumps 251 (described later in detail). In addition, the fan frame 2a of the fan 2 may also be provided with a wire blocking plate 26, which is adjacent to the notch 211, and the wire blocking plate 26 is located farther away from the second fixed line protrusion 25 and the ring wall 21 Between the axial ends of the notch 211; in the axial direction of the fan 2, it is preferable that both the second fixed-line protrusion 25 and the notch 211 are located within the setting range of the wire blocking plate 26. According to this, after the power line 23 of the stator group 2c passes out of the fan frame 2a from the notch 211, it can be stopped by the wire blocking plate 26 and can no longer go to the annular wall 21 away from the axial end of the notch 211. mobile.

請參照第4、5、6圖，據由前述結構，欲將該風扇2結合至該主框座1時，可旋動該風扇2使該第二旋扣部24結合該主框座1的第一旋扣部11，以由該第二固線凸部25與該第一固線凸部12共同形成一固線空間N。 Please refer to FIGS. 4, 5 and 6. According to the foregoing structure, when the fan 2 is to be coupled to the main frame base 1, the fan 2 can be rotated to make the second turn-locking portion 24 combined with the main frame base 1. The first turn-locking portion 11 forms a fixed-line space N together with the second fixed-line convex portion 25 and the first fixed-line convex portion 12.

詳言之，在本實施例中，使用者可以先將該電源線23裸露 在該扇框2a外的部位通過該出線口13(請配合參照第3圖)穿出該主框座1，且該電源線23穿出該主框座1的部位係呈未被緊固的狀態；接著由該風扇2的數個旋扣件241分別對位該主框座1的數個對位缺槽113，並將該風扇2朝該導流管1b方向壓入，再旋動該風扇2，使各該旋扣件241在該旋移槽112中旋移，直到各該旋扣件241上的彈片242a對位至該防脫板111上的卡掣口114a時，該彈片242a可自動卡抵住該卡掣口114a，即完成將該風扇2結合至該主框座1的動作。 Specifically, in this embodiment, the user may first expose the power cord 23 The main frame base 1 is passed through the outlet 13 (please refer to FIG. 3) at a position outside the fan frame 2a, and the power cord 23 passes through the main frame base 1 and is not fastened. Then, the plurality of rotary fasteners 241 of the fan 2 are respectively aligned with the plurality of registration notches 113 of the main frame base 1, and the fan 2 is pushed in the direction of the deflector 1b, and then rotated. The fan 2 rotates each of the rotating fasteners 241 in the rotating groove 112 until the elastic pieces 242 a on the each of the rotating fasteners 241 are aligned to the latch openings 114 a on the anti-dropout plate 111. 242a can automatically snap against the card opening 114a, which completes the action of coupling the fan 2 to the main frame base 1.

值得一提的是，在該防脫板111上只設有該鎖孔114b的實施例中，則是在旋動該風扇2使各該旋扣件241同步在該旋移槽112中旋移一預定行程後，使各該旋扣件241上的鎖孔242b對位至該防脫板111上的鎖孔114b；此時，該二鎖孔114b、242b雖尚未被一鎖固元件S鎖固，但仍可藉由該防脫板111防止該風扇2軸向脫離該主框座1，故使用者可以先放開該風扇2，再拿取鎖固元件S鎖固相對位的二鎖孔114b、242b，在操作上仍相當便利。 It is worth mentioning that, in the embodiment in which only the lock hole 114b is provided on the anti-dropout plate 111, the fan 2 is rotated to synchronize the rotation fasteners 241 in the rotation groove 112. After a predetermined stroke, the lock holes 242b on each of the turn fasteners 241 are aligned to the lock holes 114b on the anti-dropout plate 111; at this time, although the two lock holes 114b and 242b have not been locked by a locking element S The fan 2 can still be prevented from axially detaching from the main frame base 1 by the anti-fall-off plate 111, so the user can release the fan 2 first, and then take the locking element S to lock the opposite two. The keyholes 114b and 242b are still quite convenient in operation.

又，在該防脫板111上同時設有該卡掣口114a及該鎖孔114b的本實施例中，則可在各該彈片242a卡抵住相對應的卡掣口114a時，由該防脫板111防止該風扇2軸向脫離該主框座1，及由相互卡掣的彈片242a與卡掣口114a防止該風扇2再相對於該主框座1旋轉；此時，已可算完成結合該主框座1與該風扇2的動作，即使不另以鎖固元件S鎖固相對位的二鎖孔114b、242b亦無妨。而若欲更進一步地鎖固相對位的二鎖孔114b、242b，則也可以藉由相互卡掣的彈片242a與卡掣口114a確保相對應的二鎖孔114b、242b準確相對位以便鎖固元件S鎖固，故可更進一步地提升組裝便利性及效率；且該風扇2與該主框座1透過相互卡掣的彈片242a與卡掣口114a，以及由鎖固元件S鎖固相對位的二鎖孔114b、242b，可提升該風扇2與該主框座1之間的結合穩固性。 In addition, in the embodiment in which the snap-stop opening 114a and the lock hole 114b are provided on the anti-dropout plate 111 at the same time, when each of the elastic pieces 242a is caught against the corresponding snap-stop opening 114a, The release plate 111 prevents the fan 2 from axially disengaging from the main frame base 1, and the clips 242a and the latch openings 114a which are engaged with each other prevent the fan 2 from rotating relative to the main frame base 1 at this time; The operation of the main frame base 1 and the fan 2 is not necessary even if the two locking holes 114b and 242b opposite to each other are not locked by the locking element S. If you want to further lock the two lock holes 114b and 242b in opposite positions, you can also ensure that the corresponding two lock holes 114b and 242b are in the correct position for locking by using the clip 242a and the clip opening 114a which are locked with each other. The fixing element S is locked, so that the convenience and efficiency of assembly can be further improved; and the fan 2 and the main frame base 1 are locked by the locking piece 242a and the locking port 114a, and the locking phase is locked by the locking element S. The aligned two lock holes 114b and 242b can improve the bonding stability between the fan 2 and the main frame base 1.

此外，在該風扇2相對於該主框座1旋動至定位的過程中，該風扇2的第二固線凸部25會朝該主框座1的第一固線凸部12靠近至相對，以由該第二固線凸部25與該第一固線凸部12之間的最小間距形成前述的固線空間N；如此，即可在將該風扇2結合至該主框座1的過程中，一併將該風扇2的電源線23限位在該固線空間N中，使該電源線23雖不至於被繃緊但也無法在該主框座1中大幅位移。其中，該風扇2的電源線23具有一線寬W1，該固線空間N的寬度W2較佳小於該線寬W1的2倍，以確保該第二固線凸部25與該第一固線凸部12能對該電源線23提供良好的限位效果。 In addition, during the rotation of the fan 2 relative to the main frame base 1 to the positioning process, the second fixed line convex portion 25 of the fan 2 will approach the first fixed line convex portion 12 of the main frame base 1 to the opposite side. To form the aforementioned fixed-line space N with a minimum distance between the second fixed-line convex portion 25 and the first fixed-line convex portion 12; thus, the fan 2 can be coupled to the main frame base 1. In the process, the power line 23 of the fan 2 is limited to the fixed line space N, so that the power line 23 cannot be greatly tightened but cannot be greatly displaced in the main frame base 1. The power line 23 of the fan 2 has a line width W1, and the width W2 of the fixed line space N is preferably less than twice the line width W1 to ensure that the second fixed line protrusion 25 and the first fixed line protrusion The section 12 can provide a good limiting effect on the power line 23.

請參照第2、7圖，將該風扇2結合至該主框座1後，本發明的通風扇還可再將一面板3結合至該主框座1的擴口框1a，使該風扇2位於該擴口框1a與該面板3所共同圈圍出的空間內，以由該面板3保護該風扇2不易受外物碰撞，同時提升從室內觀看該通風扇時的美觀度。該面板3設有數個通風口31，本發明的通風扇運作時，該風扇2的扇輪2b可驅使氣流流動，使室內的氣體通過該面板3的數個通風口31流入該風扇2內，再通過該主框座1的導流管1b朝室外排出，達到排風效果。 Referring to FIGS. 2 and 7, after the fan 2 is coupled to the main frame base 1, the ventilating fan of the present invention can further couple a panel 3 to the flared frame 1 a of the main frame base 1 to make the fan 2 The panel 3 is located in a space surrounded by the flared frame 1a and the panel 3, so that the panel 3 protects the fan 2 from being susceptible to collision with foreign objects, and at the same time enhances the aesthetics of the ventilator when viewed from the indoor. The panel 3 is provided with a plurality of vents 31. When the ventilating fan of the present invention is in operation, the fan wheel 2b of the fan 2 can drive the airflow, so that the indoor air flows into the fan 2 through the vents 31 of the panel 3. Then, it is discharged to the outside through the deflector 1b of the main frame base 1 to achieve an exhaust effect.

綜上所述，本發明的通風扇，其風扇結合至主框座後，可直接形成一固線空間來限位電源線；如此一來，即使從外部抓取電源線以提起該通風扇，拉扯力多會在傳遞至電源線位於該固線空間中的部位時就分散到該主框座，使得該電源線銲接結合風扇的定子組的部位不易直接受到拉扯力而受損，故幾乎不會因電源線受拉扯而發生風扇故障的情況，可減少更換及修理不良品所衍生的各項成本與不便，且能有效減少消費糾紛。 In summary, after the fan of the present invention is coupled to the main frame base, a fixed-line space can be directly formed to limit the power cord; in this way, even if the power cord is grasped from the outside to lift the ventilator, Most of the pulling force is dispersed to the main frame when it is transmitted to the position of the power line in the fixed line space, so that the part of the stator group where the power line is welded and combined with the fan is not easy to be directly damaged by the pulling force, so it is hardly damaged. The failure of the fan due to the pulling of the power cord can reduce various costs and inconveniences caused by replacing and repairing defective products, and can effectively reduce consumer disputes.

此外，本發明的通風扇，其風扇係可拆卸地結合至主框座，故該風扇需要更換或維修保養時，可直接將原本結合在主框座上的風扇拆卸下來，再將更換或維修保養過的風扇裝上去即可，並不需要將整組通風 扇自安裝的固定物上拆下來，故可大幅提升拆卸及組裝風扇時的操作便利性。又，由於本發明的通風扇係將其風扇及主框座分為二個獨立的組件，故可將不同規格的扇輪組設在同規格的扇框中，即均可與該主框座結合；換言之，該主框座具有通用性，可供使用者依據需求選用及組裝所需規格的扇輪，故想要更換扇輪規格時，並不需要更換整個通風扇，可降低使用者的負擔。 In addition, the ventilating fan of the present invention is detachably coupled to the main frame base. Therefore, when the fan needs to be replaced or maintained, the fan originally attached to the main frame base can be directly removed, and then replaced or repaired. The maintained fan can be installed, there is no need to ventilate the entire group The fan is removed from the fixed fixture, so the operation convenience when disassembling and assembling the fan can be greatly improved. In addition, since the ventilating fan of the present invention divides the fan and the main frame base into two independent components, fan wheels of different specifications can be set in a fan frame of the same specification, that is, the same as the main frame base. In other words, the main frame has universality, which can be used to select and assemble the fan with the required specifications. Therefore, when you want to change the fan specifications, you do not need to replace the entire ventilation fan, which can reduce the user ’s burden.

雖然本發明已利用上述較佳實施例揭示，然其並非用以限定本發明，任何熟習此技藝者在不脫離本發明之精神和範圍之內，相對上述實施例進行各種更動與修改仍屬本發明所保護之技術範疇，因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。 Although the present invention has been disclosed using the above-mentioned preferred embodiments, it is not intended to limit the present invention. Anyone skilled in the art can make various changes and modifications to the above embodiments without departing from the spirit and scope of the present invention. The technical scope protected by the invention, so the scope of protection of the present invention shall be determined by the scope of the appended patent application.

Claims (16)

一種通風扇，包含：一主框座，該主框座設有一第一旋扣部及一第一固線凸部；及一風扇，該風扇設有一第二旋扣部及一第二固線凸部，旋動該風扇使該第二旋扣部結合該主框座的第一旋扣部時，該第二固線凸部與該第一固線凸部共同形成一固線空間。A ventilation fan includes: a main frame base provided with a first rotary buckle portion and a first fixed line convex portion; and a fan provided with a second rotary buckle portion and a second fixed line portion Convex part, when the fan is rotated to make the second turn-fastening part combine with the first turn-fastening part of the main frame base, the second fixed-line convex part and the first fixed-line convex part together form a fixed-line space. 如申請專利範圍第1項所述之通風扇，其中，該主框座具有一擴口框及一導流管，該擴口框及該導流管相連接且內部相連通，該第一旋扣部設於鄰近該擴口框連接該導流管處；該風扇具有一扇框及一扇輪，該扇輪可旋轉地設於該扇框的一環牆內，該第二旋扣部設於該環牆的一軸向端部。The ventilation fan according to item 1 of the scope of patent application, wherein the main frame base has a flared frame and a deflector, the flared frame and the deflector are connected and communicated internally, and the first rotary The buckle portion is provided adjacent to the flared frame and connected to the deflector; the fan has a fan frame and a fan wheel, and the fan wheel is rotatably provided in a ring wall of the fan frame. At an axial end of the ring wall. 如申請專利範圍第2項所述之通風扇，其中，該風扇具有一定子組供該扇輪可旋轉地結合，該定子組具有一電源線，該主框座在鄰近該擴口框連接該導流管處設有一出線口，該電源線從該出線口穿出該主框座。The ventilating fan according to item 2 of the scope of patent application, wherein the fan has a certain subgroup for the fan wheels to be rotatably combined, the stator group has a power cord, and the main frame base is connected to the flaring frame adjacent to the flaring frame. An outlet is provided at the deflector, and the power cord passes through the outlet from the main frame base. 如申請專利範圍第3項所述之通風扇，其中，該電源線具有一線寬，該固線空間的寬度小於該線寬的2倍。The ventilating fan described in item 3 of the scope of patent application, wherein the power cord has a line width, and the width of the fixed space is less than twice the line width. 如申請專利範圍第3項所述之通風扇，其中，該第一固線凸部鄰設於該出線口處並朝該風扇的一中心線凸出。The ventilating fan according to item 3 of the scope of patent application, wherein the first fixed line convex portion is adjacent to the outlet and protrudes toward a center line of the fan. 如申請專利範圍第5項所述之通風扇，其中，該扇框的環牆設有一缺口，該第二固線凸部鄰接該缺口。The ventilating fan according to item 5 of the scope of patent application, wherein the ring wall of the fan frame is provided with a gap, and the second fixed line convex portion is adjacent to the gap. 如申請專利範圍第6項所述之通風扇，其中，該第二固線凸部在最遠離該中心線的表面設有數個凸塊。The ventilating fan according to item 6 of the scope of patent application, wherein the second fixed line protrusion is provided with a plurality of bumps on a surface farthest from the center line. 如申請專利範圍第6項所述之通風扇，其中，該扇框設有一擋線板鄰近該缺口，該擋線板位於該第二固線凸部與該環牆較遠離該缺口的軸向端部之間，在該風扇的軸向上，該第二固線凸部及該缺口均位於該擋線板的設置範圍內。The ventilating fan according to item 6 of the scope of patent application, wherein the fan frame is provided with a wire blocking plate adjacent to the gap, and the wire blocking plate is located in the axial direction of the second fixed line protrusion and the annular wall farther away from the gap. Between the end portions, in the axial direction of the fan, the second fixed-line convex portion and the notch are both located within the setting range of the line blocking plate. 如申請專利範圍第6項所述之通風扇，其中，該扇框具有一底座設於該環牆內，該底座設有一線槽，該線槽延伸至該缺口，該定子組設於該底座，該電源線設於該線槽中並從該缺口穿出該扇框。The ventilation fan according to item 6 of the scope of patent application, wherein the fan frame has a base provided in the ring wall, the base is provided with a wire slot, the wire slot extends to the gap, and the stator group is provided on the base , The power cord is disposed in the cable trough and penetrates the fan frame through the gap. 如申請專利範圍第2項所述之通風扇，其中，該導流管下半部的內周面形成有一防逆流部，該導流管的壁厚於該防逆流部處係從鄰近該擴口框處朝外漸縮，以形成由內向外傾斜狀。The ventilating fan according to item 2 of the scope of patent application, wherein an anti-backflow portion is formed on the inner peripheral surface of the lower half of the diversion tube, and the wall thickness of the diversion tube is greater than that of the anti-backflow portion from adjacent to the expansion portion. The mouth frame is tapered outward to form an inclined shape from the inside to the outside. 如申請專利範圍第10項所述之通風扇，其中，該防逆流部的傾斜角度為1~2度。The ventilating fan according to item 10 of the scope of patent application, wherein the inclination angle of the backflow prevention portion is 1 to 2 degrees. 如申請專利範圍第2項所述之通風扇，其中，該擴口框的外部背面呈現朝該導流管漸縮的型態。The ventilating fan according to item 2 of the scope of patent application, wherein the outer back surface of the flared frame is gradually tapered toward the deflector. 如申請專利範圍第2至12項中任一項所述之通風扇，其中，該第一旋扣部具有一防脫板，該防脫板連接該擴口框的內表面以形成一旋移槽，該防脫板設有連通該旋移槽的至少一對位缺槽及至少一定位部，該第二旋扣部具有至少一旋扣件，該旋扣件設有一定位部以與該第一旋扣部的定位部相互結合。The ventilating fan according to any one of the items 2 to 12 of the scope of patent application, wherein the first turn-locking portion has a detachment prevention plate connected to the inner surface of the flared frame to form a rotation Slot, the anti-detachment plate is provided with at least one pair of missing slots and at least one positioning portion that communicates with the rotation slot, the second rotation fastener portion has at least one rotation fastener, and the rotation fastener is provided with a positioning portion to communicate with the rotation groove The positioning portions of the first turn-locking portion are combined with each other. 如申請專利範圍第13項所述之通風扇，其中，該第一旋扣部的定位部為一卡掣口，該第二旋扣部的定位部為一彈片，該彈片對位卡抵至對應的卡掣口。The ventilating fan according to item 13 of the scope of patent application, wherein the positioning portion of the first turn-locking portion is a latch, the positioning portion of the second turn-locking portion is an elastic piece, and the elastic piece is snapped to the position. Corresponding card opening. 如申請專利範圍第13項所述之通風扇，其中，該第一旋扣部的定位部及該第二旋扣部的定位部分別為一鎖孔，該二鎖孔相對位以供一鎖固元件貫穿鎖固。The ventilating fan according to item 13 of the scope of patent application, wherein the positioning portion of the first turn-locking portion and the positioning portion of the second turn-locking portion are respectively a lock hole, and the two lock holes are opposite to each other for a lock. The fixing element penetrates the lock. 如申請專利範圍第13項所述之通風扇，其中，該對位缺槽及該定位部的數量為數個，並環設於該防脫板，該旋扣件的數量對應該對位缺槽的數量。The ventilating fan according to item 13 of the scope of the patent application, wherein the number of the alignment gaps and the positioning portions are several, and the loops are arranged on the anti-detachment plate, and the number of the rotary fasteners corresponds to the alignment gaps. quantity.