201208813 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明有關一種工具機的導熱結構，尤指一種應用於工 具機並將熱量傳導至外部的導熱結構。 产 [0002] 【先前技術】 工具機由於體積小、價錢較低，並且可連接不同的應用 工具而形成多種變化型態，如研磨盤、砂輪機、鑽孔機 、電動板手等多種型態，可協助作業人員快速執行某些 工作程序而廣受歡迎。 〇 [0003] 〇 目前業界常見的工具機，主要包括有一本體，並於本體 内設置一電路板、一受電路板驅動的馬達、以及一隨馬 達轉動的工具轴，且電路板驅動馬達與工具軸轉動後， 將一併帶動設置於工具軸的作動件運作，而達到對工件 加工的目的；工具機中的馬達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, 630號、第 7, 1 66, 939號等專利案，其散熱方式係於軸心上裝設有 可連動的扇葉或者散熱片，藉由主馬達轉動的同時連動 扇葉或散熱片一同轉動，進而引起氣流流動於馬達上達 成散熱目的。另外，又如中國CN201478938號專利案所 示，該專利案主要是透過工具機本體於對應馬達的位置 設置散熱口，藉此對馬達提供散熱的效果。 [0004] 然而，上述的專利案主要都是對馬達進行散熱，但是工 具機運轉時，除了馬達會產生熱量外，控制用的電路板 099129219 表單編號A0101 第3頁/共15頁 0992051275-0 201208813 也會於控制晶片、ic產生高熱，勢必要有相應的散熱方 式，才能確保電路板正常運作，在美國第7, 699, 687號 專利案便揭露了電路板散熱的方式，該專利案揭露一種 手持的研磨機，該研磨機具有一外殼體、一設置於該外 殼體内的工具軸、以及一設置於該工具軸上的驅動馬達 ，且外殼體設有一握持部，電路板係設置於該握持部内 ，該握持部並於電路板的位置設有複數散熱孔，使電路 板所產生的熱量可由散熱孔排出，藉此改善電路板積熱 的問題。 [0005] 但是，一般在使用工具.機對工件加工時，容易產生大量 粉塵，粉塵將由握持部上的散熱孔侵入工具機，且附著 在電路板上，除了弄髒電路板以外，也有可能造成電路 板上電子元件的短路或損壞，導致工具機無法運作。 【發明内容】 [0006] 本發明的主要目的，在於解決上述的缺失，不但可對電 路板進行散熱，同時更可隔絕粉塵，防止粉塵侵入電路 板。 [0007] 為達上述目的，本發明提出一種工具機的導熱結構，其 包括有一工具機以及一設置於該工具機的散熱座，該工 具機設有一握把部，該握把部内部形成一容置空間，且 該容置空間容納有一電路板，並於一端形成一開口；而 該散熱座具有一裝設於該開口的散熱部，以及一連接該 散熱部並延伸至該容置空間的承載部，該承載部係承設 該電路板*並接觸該電路板的發熱源5以傳導熱'£至該 散熱部進行散熱，如是構成本發明的主要架構。 099129219 表單編號A0101 第4頁/共15頁 0992051275-0 201208813 [0008] 經由上迷技術方案可知，本發明相較於習知技術而言’ 可省去於握把部開設散熱孔的時間，更能防止粉塵侵入 握把部，避免握把部内的電路板損壞，同時又可對電路 板進行散熱，使電路板與工具機正常運作。 【實施方式】 : [0009] 有關本發明的詳細說明及技術内容，現就配合圖式說明 如下： [0010] 請參閱「圖1及圖2」所示，本發明係為一種工具機的導 0 熱結構，如圖中所示本發明金要包括有一工具機1 〇，例 如一研磨機，以及一設置於該工具機10的散熱座20 ;該 工具機10設有一讓使用者握持操作的握把部11，該握把 部11内部為中空而形成一容置空間12，該容置空間12係 容納有一電路板30，用以驅動該工具機1#運作、控制工 具機10轉速等，且該容置空間12於一端形成一開口 13， 以裝設該散熱座20。 [0011] 另請參閱「圖3」所示，該鈸熱座20包含有一裝設於該工 〇 具機10開口 13的散齡#21，.以及一連接該散熱座20並延 伸至該容置空間12的承載部22，其中，該散熱部21内部 形成一組裝空間211，且該散熱部21與該承載部22分別設 有一第一接合板212與一第二接合板222，該承載部22的 第二接合部係容納於該組裝空間211，並與該散熱部21的 第一接合板212相應接設，該第一接合板212與該第二接 合板222於相應位置分別設有通孔214、224以穿設一電 源接頭32，藉此連接外部電力以驅動該電路板3〇與該工 具機10 ’且該承載部22上更設有一對應該電源接頭32的 0992051275-0 099129219 表單編號A0101 第5頁/共15頁 201208813 凹陷部226。並請配合「圖4及圖5」所示’該第一接合板 21 2與該第二接合板2 2 2設有構成定位關係的第—定位部 213與第二定位部223 ’該第一定位部213與該第二定位 部223分別為凸柱與穿孔’且該第一接合板21 2與該第二 接合板2 2 2分別設有相應的定位孔215、2 2 5，以供嫘絲 等定位件穿設固定；該承載部2 2上凸設有支擇部2 21以支 樓該電路板30 ’且該承載部22係接觸該電路板3〇的發熱 源31，如電路板30上的晶片、1c等’藉此將電路板30發 熱源31的熱量由該承載部22傳導至該散熱部21進行散熱 ，且本發明的實施例中’ _飫熱妹21周圍更可增設複數 間隔排列的散熱鰭片216 ’甩以增加散熱面積，以提升散 熱的效果與速度。 丨纟: [0012] 綜上所述’本發明主要是透過該散熱座2·0將該電路板3〇 封閉於該工具機10的握把部11内’藉由該散熱座20具有 一於該握把部11的散熱部21 ’以及一連接該散熱部21並 承設該電路板30的承載部22 ’藉此將該電路板3〇的熱量 由該承載部22傳導至該散熱部21而達到散熱，不但可有 效降低該電路板30的溫度，使該電路板30可正常運作以 驅動該工具機10，透過此技術方案’該工具機10的握把 部11便不須另外開設供氣體流通的散熱孔，可避免工具 機10運作時的粉塵由該握把部11侵入工具機10内部，造 成該電路板30短路、損壞的問題。 [0013] 上述僅為本發明的較佳實施例而已，並非用來限定本| 明的實施範圍，即凡依本發明申請專利範圍的内容所為 的等效變化與修飾，皆應為本發明的技術範疇。 099129219 表單編號Α0101 第6頁/共15頁 0992051275-0 201208813 【圖式簡單說明】 [0014] 圖1，為本發明的外觀示意圖。 [0015] 圖2，為本發明的結構分解示意圖。 [0016] 圖3，為本發明散熱座的結構分解示意圖。 [0017] 圖4，為本發明的刳面示意圖（一）。 t [0018] 圖5，為本發明的刮面示意圖（二）。 【主要元件符號說明】201208813 VI. Description of the Invention: [Technical Field] The present invention relates to a heat conducting structure of a machine tool, and more particularly to a heat conducting structure applied to a tool machine and conducting heat to the outside. [0002] [Prior Art] Machine tools are small in size, low in price, and can be connected to different application tools to form a variety of changes, such as grinding discs, grinders, drilling machines, electric wrenches, etc. It is very popular to assist operators in quickly performing certain work procedures. 〇[0003] 〇The current common machine tool in the industry mainly includes a body, and a circuit board, a motor driven by the circuit board, and a tool shaft rotating with the motor, and the circuit board driving motor and the tool are disposed in the body. After the shaft rotates, the actuating member disposed on the tool shaft is driven to achieve the purpose of processing the workpiece; the motor in the machine tool cannot be easily excluded from heat accumulation because it is wrapped in a relatively closed casing, which is easy to cause When the temperature is too high, the motor overheats and affects the operation of the machine tool. Therefore, there are many heat dissipation structures, such as the patents of U.S. Patent Nos. 6,789, 630, 7, 66, 939, etc. The method is characterized in that the shaft is provided with a connectable fan blade or a heat sink, and the main fan rotates while the fan blade or the heat sink rotates together, thereby causing the airflow to flow on the motor to achieve the purpose of heat dissipation. In addition, as shown in the Chinese patent CN201478938, the patent mainly provides a heat dissipation port through the position of the machine tool body corresponding to the motor, thereby providing a heat dissipation effect to the motor. [0004] However, the above patents mainly provide heat dissipation for the motor, but when the machine tool is running, in addition to the heat generated by the motor, the control circuit board 099129219 Form No. A0101 Page 3 / Total 15 Page 0992051275-0 201208813 It also controls the wafer and ic to generate high heat, and it is necessary to have a corresponding heat dissipation method to ensure the normal operation of the circuit board. The method of heat dissipation of the circuit board is disclosed in the US Patent No. 7,699,687, which discloses a method. a hand-held grinder having an outer casing, a tool shaft disposed in the outer casing, and a drive motor disposed on the tool shaft, and the outer casing is provided with a grip portion, and the circuit board is disposed on the In the holding portion, the holding portion is provided with a plurality of heat dissipation holes at a position of the circuit board, so that heat generated by the circuit board can be discharged from the heat dissipation holes, thereby improving the heat accumulation of the circuit board. [0005] However, when a tool is used to machine a workpiece, a large amount of dust is easily generated, and the dust is intruded into the machine tool by the heat dissipation hole on the grip portion, and is attached to the circuit board, and in addition to soiling the circuit board, it is also possible Short circuit or damage to the electronic components on the board, resulting in the machine tool not working. SUMMARY OF THE INVENTION [0006] The main object of the present invention is to solve the above-mentioned drawbacks, not only to dissipate heat from the circuit board, but also to isolate dust and prevent dust from intruding into the circuit board. [0007] In order to achieve the above object, the present invention provides a heat-conducting structure of a machine tool, which includes a machine tool and a heat sink disposed on the machine tool. The machine tool is provided with a grip portion, and the inside of the grip portion is formed. The accommodating space accommodates a circuit board and defines an opening at one end thereof; and the heat sink has a heat dissipating portion mounted on the opening, and a heat connecting portion connecting the heat dissipating portion and extending to the accommodating space A carrying portion that receives the circuit board* and contacts the heat source 5 of the circuit board to conduct heat to the heat dissipating portion for heat dissipation, as a main structure of the present invention. 099129219 Form No. A0101 Page 4 / Total 15 Page 0992051275-0 201208813 [0008] According to the above technical solution, the present invention can save time for the vent to open the vent hole compared with the prior art. It can prevent dust from intruding into the grip portion, avoiding damage to the circuit board in the grip portion, and at the same time dissipating heat from the circuit board to make the circuit board and the machine tool operate normally. [Embodiment] [0009] The detailed description and technical contents of the present invention will now be described with reference to the following drawings: [0010] Referring to "Fig. 1 and Fig. 2", the present invention is a guide for a machine tool. 0 The thermal structure, as shown in the figure, comprises a machine tool 1 〇, such as a grinder, and a heat sink 20 disposed on the machine tool 10; the machine tool 10 is provided with a user holding operation The grip portion 11 is hollow inside to form an accommodating space 12, and the accommodating space 12 receives a circuit board 30 for driving the machine tool 1#, controlling the speed of the machine tool 10, etc. The accommodating space 12 defines an opening 13 at one end to mount the heat sink 20. [0011] Please also refer to FIG. 3, the hot seat 20 includes a female body #21 installed in the opening 13 of the work tool 10, and a connecting heat sink 20 and extending to the capacity. The loading portion 22 of the space 12 is disposed, wherein an assembly space 211 is formed in the heat dissipating portion 21, and the heat dissipating portion 21 and the supporting portion 22 are respectively provided with a first joint plate 212 and a second joint plate 222. The second joint portion of the second joint plate 212 and the second joint plate 222 are respectively connected to the first joint plate 212 of the heat dissipating portion 21, and the first joint plate 212 and the second joint plate 222 are respectively disposed at corresponding positions. The holes 214, 224 are provided with a power connector 32 for connecting external power to drive the circuit board 3 and the machine tool 10', and the carrier portion 22 is further provided with a pair of 0992051275-0 099129219 forms corresponding to the power connector 32. No. A0101 Page 5 of 15 201208813 Depression 226. In addition, as shown in FIG. 4 and FIG. 5, the first joint plate 21 2 and the second joint plate 2 2 2 are provided with a first positioning portion 213 and a second positioning portion 223 ′ that form a positioning relationship. The positioning portion 213 and the second positioning portion 223 are respectively a protruding post and a through hole ', and the first engaging plate 21 2 and the second engaging plate 2 2 2 are respectively provided with corresponding positioning holes 215, 2 2 5 for 嫘The positioning member of the wire is fixedly disposed; the supporting portion 2 2 is convexly provided with a supporting portion 2 21 for supporting the circuit board 30 ′ and the supporting portion 22 is in contact with the heat source 31 of the circuit board 3 , such as a circuit board The wafers, 1c, and the like on the 30 are used to conduct heat from the heat source 31 of the circuit board 30 to the heat dissipating portion 21 for heat dissipation, and in the embodiment of the present invention, the _ 饫 hot sister 21 can be added A plurality of heat-dissipating fins 216' are arranged at intervals to increase the heat dissipation area to enhance the heat dissipation effect and speed. 00: [0012] In summary, the present invention mainly encloses the circuit board 3〇 in the grip portion 11 of the power tool 10 through the heat sink 2·0, wherein the heat sink 20 has a The heat dissipating portion 21 ′ of the grip portion 11 and a carrying portion 22 ′ connecting the heat dissipating portion 21 and supporting the circuit board 30 are thereby conducted to the heat of the circuit board 3 由 from the carrying portion 22 to the heat dissipating portion 21 . The heat dissipation can not only effectively lower the temperature of the circuit board 30, but also enable the circuit board 30 to operate normally to drive the power tool 10. By the technical solution, the grip portion 11 of the power tool 10 does not need to be separately provided. The heat dissipation holes through which the gas flows can prevent the dust in the operation of the machine tool 10 from entering the inside of the machine tool 10 by the grip portion 11, causing the circuit board 30 to be short-circuited and damaged. The above is only the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, that is, the equivalent changes and modifications of the content of the patent application of the present invention should be Technical category. 099129219 Form No. Α0101 Page 6 of 15 0992051275-0 201208813 [Simplified Schematic] [0014] FIG. 1 is a schematic view of the appearance of the present invention. 2 is a schematic exploded view of the structure of the present invention. 3 is a schematic exploded view of the heat sink of the present invention. 4 is a schematic cross-sectional view (1) of the present invention. [0018] FIG. 5 is a schematic view (2) of the shaving surface of the present invention. [Main component symbol description]
[0019] 10....... .......工具機 [0020] 11....... .......握把部 [0021] 12....... .......容置空間 [0022] 13....... .......開口 [0023] 20....... [0024] 21....... .......散熱部 [0025] 211...... .......組裝空間 [0026] 212...... [0027] 213...... .......第一定位部 通孔 [0028] 214 [0029] 215.............定位孔 [0030] 216.............散熱鰭片 [0031] 22..............承載部 099129219 表單編號A0101 第7頁/共15頁 0992051275-0 201208813 [0032] 221...... .......支撐部 [0033] 222 ...... [0034] 223 ...... .......第二定位部 [0035] 224 ...... .......通孔 [0036] 225 ...... .......定位孔 [0037] 226 ...... .......凹陷部 [0038] 30....... .......電路板 [0039] 31....... .......發熱源 [0040] 32....... .......電源接頭 099129219 表單編號A0101 第8頁/共15頁 0992051275-0[0019] 10...................Tool machine [0020] 11................... grip portion [0021] 12..... .. ....... accommodation space [0022] 13................... opening [0023] 20....... [0024] 21.... ..........heating section [0025] 211..................assembly space [0026] 212...... [0027] 213.... . .......first positioning portion through hole [0028] 214 [0029] 215............. positioning hole [0030] 216......... .... Heat sink fins [0031] 22.............. Bearer 099129219 Form No. A0101 Page 7 / Total 15 Page 0992051275-0 201208813 [0032] 221.... .. .......Support [0033] 222 ...... [0034] 223 ..................Second positioning part [0035] 224 .... .. .......through hole [0036] 225 ..................positioning hole [0037] 226 .................. recess [ 0038] 30....... .......Circuit board [0039] 31...................heat source [0040] 32....... .......Power Connector 099129219 Form No. A0101 Page 8 / Total 15 Page 0992051275-0