、發明說明： 【發明所屬之技術領域】 本發明係有關一種封閉式工具機之散熱架構’尤指一種藉由馬達 轉子轉動之同時帶動氣流流動而達成散熱功效之工具機散熱架構。 【先前技術】 自從電動馬達的發明開始，幾世紀以來不斷的進步與發展為人類 帶來生活上極大的便利，由最初工業騎的大型電動馬達，—直到體 積較小的家職動馬達’最後應關日常生活用品、工具機等小型電 動馬達’其ϋ麵著構造、製造材料的改良與創新*越來越小，所能 應用的層面也越來越廣。 現今電動馬達可依構造區分出多種不同種類馬達，每種馬達都有 相異的使用特性，無論是體積、散熱、扭力、轉速、材質、製造成本、 控制方式等概，對於每種電動馬達都不盡相同，餘直接斷定何種 電動馬達結構為最佳，反而必須考慮顺用的魏、需求才能選擇最 適合的電動馬達’然而對於一般較小型的電動馬達而言，最嚴苛的使 用條件與環境莫過於工具機中的電動馬達。 應用於工具機中的電動馬達，能夠輕易考驗電動馬達所有特性， 例如通常會要求體積小、扭力足、轉速需求高、以及最重要於長時間 使用下的耐服’只要上述某_種特性表現擁有缺陷，就會造成工具 機無法作業或容易損壞，而其中較易造成困擾的部分主要是電動馬達 内部由軸承(Bearing)、馬達定子(Stat〇r)上的線圈(c〇il)、以及電磁 (Electromagnetism)所產生而累積的熱量，因為熱量造成電動馬達過熱， 而直接影響工具機可否長時間運作，也就是影響工具機的耐用性。 一般常見用於工具機的電動馬達都使用帶有電刷(Brush)與換向器 (Commutator)的直流馬達(Brushed DC M〇t〇r)，然而該種馬達體積大、 效率低’且_與換向器之間所產生的火花對該兩元件都會造成耗損 1373904 而視為須定時更換的消耗元件，因此工具機馬達漸漸的改用體積較—. 小、效率較高的直流無刷馬達(BrushlessDCM〇t〇r)來應用在工具機上， 但因為體積較小而使得馬達所產生的熱更為集中，且應用於工具機中 的直流無刷馬達更因為被包覆於較密閉的殼體内，無法輕易排除積 熱，容易造成使用時溫度過高’導致馬達過熱(〇verHeat)而影響工具機 的運作’因此有許多散熱結構相應而生，例如美國專利第6,789,63〇號、 第7,166,939號、美國專利公開第2008/0233848號、中華民國專利公告 第M263204號所示’為使用直流無刷馬達工具機中最常使用的内轉子 馬達(Inner Runner Motor)結構’其主要的散熱方式通常在軸心(沾也)上 裝設有可連動的扇葉(Fan)或者散熱片砂㈣帅藉由主馬達轉動賴φ 時連動扇葉或散熱片-同轉動，進而引起氣流流動於馬達上達成散熱 目的，此外’還更有-種設置另一組帶有扇葉的散熱馬達，無論主馬、 達疋否轉動’皆可利用散熱馬達持續進行散熱，然而，上述方式之效 果於工具機長時間使用下亦然有限，並且額外增加了許多體積與零 件同時也增加了製造成本與電力消耗；而直流無刷馬達工具機中較 少使用的外轉子馬達(Out R_er Motor)結構，同樣有著如内轉子馬達 結構難以散_問題，因此也有減應轉子結構的散熱構造如中華 民國專利公告第M269645號所示，主要於外轉子上開設有進氣孔，並 雜體上·設有減應之航，藉由外轉預_雌氣流，在由罾 威體上之透孔排出氣流，藉此達到散熱的目的，然而該種外轉子直流 無刷馬達的散熱結構對於氣流的擾動僅靠外轉子上的進氣孔斜切面來 推動，於長時間的使用下所排除的積熱也有限。由此可知，應用於工· 具機中的直流無刷馬親有許純步的空間，以改善散料良所帶來 的缺失。 【發明内容】 本發明之主要目的’在於彌補習知直流無刷馬達在賴式工具機 4 1373904 中易造成過熱的缺失’提供-種得以有效排除馬達中積熱的散熱結構。[Technical Field] The present invention relates to a heat dissipating structure of a closed machine tool, in particular to a machine tool heat dissipating structure that achieves heat dissipation by rotating a motor rotor while driving airflow. [Prior Art] Since the invention of the electric motor, continuous progress and development over the centuries have brought great convenience to human life, from the large electric motor that was originally industrially riding, to the small-sized home motor. It is necessary to close small electric motors such as daily necessities and machine tools. The improvements and innovations in the construction and manufacturing materials are becoming smaller and smaller, and the level of application is becoming wider and wider. Today's electric motors can be distinguished by a variety of different types of motors. Each type of motor has different characteristics, regardless of volume, heat dissipation, torque, speed, material, manufacturing cost, control method, etc., for each type of electric motor. Different, the other directly determines which electric motor structure is the best, but must consider the Wei, the demand to choose the most suitable electric motor' However, for the most small electric motor, the most severe conditions of use And the environment is no more than the electric motor in the machine tool. The electric motor used in the machine tool can easily test all the characteristics of the electric motor. For example, it usually requires small volume, sufficient torque, high speed demand, and most importantly, it is suitable for long-term use. If there is a defect, the machine tool will be unworkable or easily damaged, and the part that is more troublesome is mainly the bearing inside the electric motor, the coil on the motor stator (Stat〇r), and The heat generated by electromagnetic electricity (Electromagnetism), because the heat causes the electric motor to overheat, directly affects the long-term operation of the machine tool, which affects the durability of the machine tool. Electric motors commonly used in machine tools use a brush motor with a commutator (Brushed DC M〇t〇r), however, this type of motor is bulky and inefficient~ and_ The spark generated between the commutator and the commutator will cause loss of 1373904 for both components and will be regarded as a consumable component that needs to be replaced regularly. Therefore, the machine motor is gradually changed to a smaller, more efficient DC brushless motor. (BrushlessDCM〇t〇r) is applied to the machine tool, but because of the small volume, the heat generated by the motor is more concentrated, and the DC brushless motor applied to the machine tool is even more coated because it is covered. In the housing, it is not easy to eliminate the accumulated heat, which is easy to cause the temperature to be too high during use, which causes the motor to overheat (〇verHeat) and affect the operation of the machine tool. Therefore, there are many heat dissipation structures, such as US Patent No. 6,789,63. , No. 7,166,939, U.S. Patent Publication No. 2008/0233848, and Republic of China Patent Publication No. M263204, which is the most commonly used inner rotor motor (Inner Runner Motor) using a DC brushless motor machine tool. The main heat-dissipation method is usually equipped with a fan blade (Fan) or a heat sink sand (4) on the shaft (4). When the main motor rotates the φ, the fan blade or the heat sink is rotated. In turn, the airflow is caused to flow on the motor to achieve the purpose of heat dissipation. In addition, there is another type of heat-dissipating motor with a fan blade, and the heat-dissipating motor can continuously dissipate heat regardless of whether the main horse or the wheel is rotated. The effect of the above method is also limited when the machine tool is used for a long time, and an additional number of parts and parts are added, which also increases the manufacturing cost and power consumption; and the outer rotor motor which is less used in the DC brushless motor machine tool (Out R_er Motor) structure also has the problem that the inner rotor motor structure is difficult to disperse, so there is also a heat dissipation structure that reduces the rotor structure. As shown in the Republic of China Patent Bulletin No. M269645, the air intake hole is mainly opened on the outer rotor. On the body, there is a flight of reduction, and by externally rotating the pre- female airflow, the airflow is exhausted through the through hole in the converse body, thereby achieving the purpose of heat dissipation. The heat dissipation structure of the brush motor disturbance to the airflow inlet holes alone chamfer on the outer rotor to promote, under the long-term use is limited to exclude the accumulated heat. It can be seen that the DC brushless horses used in the machine tools have a space of pure steps to improve the lack of bulk materials. SUMMARY OF THE INVENTION The main object of the present invention is to make up for the fact that the conventional DC brushless motor is susceptible to overheating in the Lai tool machine 4 1373904, providing a heat dissipation structure that effectively eliminates heat buildup in the motor.
為達上述目的’本發明包含有一具有容設空間之工具機主體， 該主體壁面上設有連通容設空間及外部之散熱σ，並雜設空間内臀 設有-奸’ 鮮設空間内設有—介於該定子_主體之間之韓 子’令該轉子與触舰面形間，_預該定子之門^ 成厂軸流空間，該旋流空間及該轴流空間具備有—徑向氣流通道2 互連通，且賴子上設雜向氣流孔連通旋流空間及雜流空間， 於該轉子上還設有導流部’以該轉子相m紋子行旋轉運 生熱驗徑向自軸流空間經氣流通道至該旋流空間，該導流部透 散熱口排放該減流至外部且引導外部冷氣流輯軸向氣流孔進入= 軸流空間構成—觀散熱風流，即構成本發明之基本架構。 、 藉上述技術方案，本發明相較於習知技術至少具有下列優點：In order to achieve the above object, the present invention comprises a main body of a machine tool having a space for accommodating a space for accommodating a space and an external space, and a space for the inside of the miscellaneous space. There is - between the stator and the body of the Hanzi 'make the rotor and the touch ship surface shape, _ pre-the stator door ^ factory axial flow space, the swirl space and the axial flow space have the diameter The airflow channel 2 is interconnected, and the hybrid airflow hole is connected to the swirling space and the flow space, and the flow guiding portion is further disposed on the rotor, and the rotor phase is rotated by the m-shaped sub-row. The axial flow space passes through the air flow passage to the swirl flow space, and the flow guiding portion discharges the current flow to the outside through the heat dissipation port and guides the external cold air flow to the axial air flow hole to enter = the axial flow space constitutes - the heat dissipation air flow, that is, the configuration The basic architecture of the invention. According to the above technical solution, the present invention has at least the following advantages compared with the prior art:
一、 本發明之該導流部設於該轉子上，可與該轉子__體成形完 成，不會增加額外零件與組裝或製造步驟，避免因為額外= 散熱結構造成整體製造成本過高。 二、 本發直接_轉子上設魏祕部之方式，令馬達可在 維持原本體積、以及不需要額外耗電的前提下，利用自身之 轉動達到散熱的目的。 【實施方式】 有關本發明之詳細說明與技術内容，現就配合圖式說明如下. 請參閱『圖^及『圖2』所示，為本發明之立體分解示意圖、剖 面不意圖，如圖所示’本發明具有—卫具機主體⑽，該主體4Q内部形 成-容設空間43，且於該主體4G壁面上設有至少_散熱口 4卜藉由 _熱口 41連通該容設空間43及該主體4〇之外部，而於該容設:門 43内固設有一提轉磁場之定子31，於較佳實施圖式中該定子^ 係藉由定位於-定子座3〇上而固設於該容設空間Μ内，並於該容設 5 空間43内的該定子31與該主體40之間設有一轉子加，於圖式中，該 轉子2〇係'呈似桶狀外觀而置於該定子31外周且留有間隙，令該轉子 20與該主體40壁面之間形成-旋流空間a，且該轉子2〇與該定^ μ 之間形成-轴流_ B，其中職流空間A及該贿㈣b之間更藉 由-徑向紐猶c連通，此㈣更可藉峰於雜子2g上之轴向^ 流孔26連通該旋流空間a及該軸流空間B，其中該轉子2〇上設有至 少-導流部25 ’該導鱗25之㈣在職著該轉子2g肋位=時推 動周遭空氣而形成旋流，上述即為本發明之基本架構。 而於上述較佳實施圖例中所示，該定子31與該轉子2〇丘轴心 -轉動軸Π)，而該轉練1G最末端連接4具組件u，於較佳實施圖又 例中呈現-鮮的磨砂輪工具機，然而僅為便於解說，並不用以 本發明’雜雜1G可以料軸之方式無轉子μ連動，而★亥工且 組件11也不限定於磨砂輪，可為其他利職轉動能之工具组件Hi 中該轉子20包含-底部21與—環部22，該底部2ι設有該轴孔 26 ’且該底部21更可設有1助導流肋27，該辅助導流肋27传用以 辅助氣流流向肺向論L 26，而該環部22職有雜件2 =些磁性件則辦轉子2G之„面24上，可紅述構造令^ :20更加完善；於較佳實施例中，為了令該容設空間们於該轉^ 及该定子31外形成㈣之空間，可_該主體則裝設有 成封閉包覆該轉子2G及定子31之容設空間43而隔絕外部灰 述圖式及内容’為了更進—步解說本發明之散熱原理，靖 “閱圖3』所不，為本發明之剖面氣流流動示 __鱗，該定子31周遭所產生二；^ 二Μ㈣B 向氣流通道c至該旋流空間A，接著藉二 流部25所產生之氣流而透過該散熱口 41排放熱氣流至外部^引°導 流而進:亍冷、熱氣流之交換’為了說明冷、熱氡流之進出路 '，式中該散熱口 41更包含有一進風口 4丨丨以及一出風口化， -、中垓進風口 411及該出風口 不用以限糧明，錢明而定義’而 —讀冷、減流之動作可發生於該進1. The flow guiding portion of the present invention is disposed on the rotor and can be formed with the rotor body without adding additional parts and assembly or manufacturing steps to avoid excessive manufacturing cost due to the extra = heat dissipation structure. Second, the hair directly _ rotor on the Wei secret part of the way, so that the motor can maintain its original volume, and without the need for additional power consumption, use its own rotation to achieve the purpose of heat dissipation. [Embodiment] The detailed description and technical contents of the present invention will now be described with reference to the drawings. Please refer to FIG. 2 and FIG. 2 for a schematic exploded perspective view of the present invention. The present invention has a main body (10), and a main body 4Q is formed with a receiving space 43, and at least a heat dissipating port 4 is provided on the wall surface of the main body 4G, and the receiving space 43 is connected by the hot port 41. And the outer portion of the main body 4, and the stator 31 is fixed in the door 43 with a rotating magnetic field. In the preferred embodiment, the stator is fixed by positioning on the stator base 3 A rotor is disposed between the stator 31 and the main body 40 in the receiving space Μ, and in the drawing, the rotor 2 is in a barrel-like appearance. The outer circumference of the stator 31 is placed with a gap to form a swirling space a between the rotor 20 and the wall surface of the main body 40, and the axial flow _ B is formed between the rotor 2〇 and the fixed body. The flow space A and the bribe (four) b are further connected by the radial direction, and the (four) can be borrowed from the axial direction of the hybrid 2g. Connecting the swirling space a and the axial flow space B, wherein the rotor 2 is provided with at least a flow guiding portion 25'. (4) when the rotor 2g rib position = when the rotor 2g rib position = pushes the surrounding air to form a swirling flow The above is the basic architecture of the present invention. As shown in the preferred embodiment, the stator 31 and the rotor 2 are pivot-axis-rotating, and the final 1G of the relay 1G is connected to the four components u, which are presented in the preferred embodiment. - Fresh grinding wheel machine tool, however, for convenience of explanation, it is not used in the invention of the 'hetero 1G can be shaft type without rotor μ linkage, and ★ Haigong and the assembly 11 is not limited to the grinding wheel, but other The rotor 20 includes a bottom portion 21 and a ring portion 22, the bottom portion 21 is provided with the shaft hole 26', and the bottom portion 21 is further provided with a guide flow rib 27, the auxiliary guide The flow rib 27 is transmitted to assist the flow of air to the lung L L 26, and the ring portion 22 has miscellaneous pieces 2 = some magnetic parts are arranged on the face 2 of the rotor 2G, and the structure can be further improved; In a preferred embodiment, in order to allow the accommodation space to form a space (4) outside the turntable and the stator 31, the main body may be provided with a receiving space for enclosing the rotor 2G and the stator 31. 43 and isolate the external gray figure and content 'In order to further explain the heat dissipation principle of the present invention, Jing "reading Figure 3" is not, The flow of the airflow in the cross section shows the __ scale, and the stator 31 is generated by two; ^2 (4) B to the airflow passage c to the swirling space A, and then the airflow generated by the second flow portion 25 is used to discharge the hot air flow through the heat dissipation opening 41 to External ^ lead ° flow into: the exchange of cold, hot air flow 'to illustrate the cold and hot turbulent flow in and out ', where the heat sink 41 further includes an air inlet 4 丨丨 and a venting, - , the middle vent vent 411 and the outlet are not required to limit the grain, Qian Ming is defined as 'and the cold and reduced flow action can occur in the
Lr 風口412之兩者，接著藉由所敝冷氣流流經該轴向 的啊雜流空Fa1B以構成一循環散熱風流’達到散熱之目 I閱圖4』所不，為本發明之剖面氣流流動示意圖2，更可於 2G之底部21由外周緣向中央呈漸縮傾斜狀，以增加本發明循 環政熱風流的流動效率。 2閱『圖5』所示’為本發明之另—實施例立體分解示意圖，其 ^呈41更可設有—顯、元件42，戦灰塵或賤侵人馬達而影 …、機之整體*命’而於圖式中更可見該導流部25除可如『圖i 向方式設置於該轉子20外周面23之外，更可呈弧曲狀^ ，亥射20外周面23，缝不用以蚊本發明，其導流部25之目的 糸弓I導氣體贿，而可依需求選擇引導氣流效率最佳的軸向、弧曲、 j其他排列方式’藉由上述技術内容，令封閉式卫具機内之馬達積熱 得以輕易排除’大巾§增加工具機之壽命及耐用性。 雖然本發明已以較佳實施例揭露如上，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_麟和範圍内，而所作的 _許更動與；^飾，皆應涵蓋於本發财，因此本發明的保護範圍當視 後附的申睛專利範圍所界定者為準。 ”/Γ、上所述，本伽較習知的技術增進上述號，應已充分符合新 賴性及進步性的法定創新專利要件，爰依法提出申請，懇請責局核 准本件發明專獅請案’以綱^，至感德便。 1373904 【圖式簡單說明】 圖1 為本發明之立體分解示意圖 圖2 為本發明之剖面示意圖 圖3 為本發明之剖面氣流流動示意圖1 圖4 為本發明之剖面氣流流動示意圖2 圖5 為本發明之另一實施例立體分解示意圖 【主要元件符號說明】 10 ..................... 轉動軸 11 ..................... 工具組件 20 ..................... 轉子 21 ..................... 底部 22 ..................... 環部 23 ..................... 外周面 24 ..................... 内周面 25 ..................... 導流部 26 ..................... 軸向氣流孔 27 ..................... 輔助導流肋 28 ..................... 磁性件 30 ..................... 定子座 31 ..................... 定子 40 ..................... 主體 41 ..................... 散熱口 411 ..................... 進風口 412 ..................... 出風口 42 ..................... 過濾元件 43 ..................... 容設空間 1373904 50 ..................... 鎖環 A ..................... 旋流空間 B ..................... 軸流空間 C ..................... 徑向氣流通道The two Lr tuyes 412 are then flowed through the axial flow of the airflow Fa1B to form a recirculating cooling airflow 'to achieve heat dissipation. I see FIG. 4', which is the cross-sectional airflow of the present invention. The flow diagram 2 can be tapered from the outer periphery toward the center at the bottom 21 of the 2G to increase the flow efficiency of the circular political hot air flow of the present invention. 2After "Fig. 5" is a schematic exploded view of another embodiment of the present invention, which can be provided with - display, element 42, dust or cockroach invading the motor and the whole machine* In the figure, it can be seen that the flow guiding portion 25 can be arranged in an arc shape like the outer circumferential surface 23 of the rotor 20 in the manner of the figure i, and the outer peripheral surface 23 of the sea 20 is not used. In the present invention, the purpose of the flow guiding portion 25 is to guide the gas bribe, and the axial, arc, and other arrangements for guiding the airflow efficiency can be selected according to the demand. The heat accumulation of the motor inside the guard machine can be easily ruled out. 'The big towel § increases the life and durability of the machine tool. Although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the skilled artisan of the present invention, and the invention may be modified without departing from the scope of the present invention. The scope of protection of the present invention is defined by the scope of the appended claims. "/Γ, above, Benja is better than the conventional technology to enhance the above number, should fully comply with the statutory innovation patent requirements of new and progressive, and apply for it according to law, and ask the responsible office to approve the invention of the lion. 1 is a schematic exploded view of the present invention. FIG. 2 is a schematic cross-sectional view of the present invention. FIG. 3 is a schematic cross-sectional flow diagram of the present invention. FIG. Schematic diagram of cross-sectional airflow flow FIG. 5 is a perspective exploded view of another embodiment of the present invention. [Main component symbol description] 10 ..................... Rotary shaft 11 ..................... Tool Assembly 20 ..................... Rotor 21 ... .................. Bottom 22 ..................... Ring 23 ... ............... outer peripheral surface 24 ..................... inner circumferential surface 25 .... .............. The flow guiding portion 26 ..................... Axial air flow hole 27 ... ............... Auxiliary flow guiding rib 28 ..................... Magnetic member 30 ...... ............... Stator base 31 ..................... Stator 40 ......... .... ........ Main body 41 ..................... Heat vent 411 ................ ..... air inlet 412 ..................... air outlet 42 .................. ... filter element 43 ..................... accommodating space 1373904 50 .................. ... lock ring A ..................... Swirl space B ................... .. axial flow space C ..................... radial air flow channel