200800523 九、發明說明： 【發明所屬之技術領域】 本發明係有關於衝擊起子（impact driver)等的電動 工具，特別是關於可有效率地冷卻控制馬達迴轉的迴轉控 制用電子零件的電動工具的物件。 【先前技術】 -般在衝擊起子等的電動工具方面，由於藉由扳柄開 關（trigger switch)的拉引量，可控制迴轉數，所以有安 裝FET(場效電晶體，加“…⑴舰仏㈣等的迴轉 控制用電子零件的物件。此類的電動工具係可在扳柄開關 拉引量淺時低速迴轉，拉引深的話，以高速迴轉。然而， 因為迴轉控制用電子零件低速迴轉時，特別是迴轉控制用 電子零件發熱而成為高溫，_以輪出效率降低、故障等。 因此’防止迴轉控翻電子零件的過熱用的手段被要求。 二對應於此類的要求，例如，在導入空氣 冷郃風扇用的開口部的徭 的後方、更精由散熱板、形成具備空 散熱室、而在上述散熱板的内側固定迴轉控制 =手:::件(曰本特開平"―，或在電動工 電子零件的物件(曰本：在此散熱塊安裝迴轉控制用 本特開2005-07461 3)等被熟知。 入，、而由於曰本特開平11一300656的物件俜在气、亲的 冷卻風扇的後方，萚“ ”千係在馬達的 + 胃放熱板形成空氣流動的散埶纟Μ ϋ 成，外殼全體的容積Μ το 欢…至的構 、曰大，不僅有因為大型而重量變重的。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 object. [Prior Art] As for the power tool such as an impact driver, since the number of revolutions can be controlled by the pull amount of the trigger switch, the FET is installed (field effect transistor, plus "...(1) ship仏 (4) The electronic parts of the slewing control, etc. This type of power tool can be rotated at a low speed when the trigger switch is shallow, and at a high speed when the pull is deep. However, because the electronic components for slewing control rotate at a low speed In particular, the electronic components for the slewing control are heated to a high temperature, and the efficiency of the wheel is reduced, malfunctioning, etc. Therefore, a means for preventing overheating of the slewing electronic components is required. Second, corresponding to such requirements, for example, The rear side of the opening for introducing the air-cooling fan is further refined by the heat-dissipating plate, and the air-cooling chamber is provided, and the rotation control is fixed on the inner side of the heat-dissipating plate=hand:::(曰本特平平" ―, or in the object of the electric industrial electronic parts (曰本: in this heat sink installation swing control with the special opening 2005-07461 3), etc. are known. In, because the 曰本特开平11一300656 The 俜 俜 在 在 在 在 在 在 在 在 在 千 千 千 千 千 千 千 千 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃 胃Not only because of the size but also because of the weight
7042-8747-PF 5 200800523 缺點’由於從冷卻風扇送至" 馬達的冷卻風的流路變長，而 馬達的々郃效率降低的問題。又，曰本特開⑽5_〇74613 爾係因為在把手的内部沒有多餘的空間，散熱性方面 有問’又，因為把手本㊃ 不體不付不加大，而有把手變粗的 巧題。 【發明内容】 本發明的一個以上的杏# 丨/么 上的月％例係提供電動工具的外殼 二3L化不而將把手尺寸變粗、而迴轉控制用電子零件 的冷卻效率佳、因過埶的 、的故P早或輸出效率的降低係少、信 賴性南的電動工具。 根據本發明的一個以上的每 , 上的貝轭例，在分別在後部收納 轉=Γ 、在前部收納將上述馬達作為驅動源的迴 ‘驅動稀卜殼的前部設置迴轉驅動傳達 部設置把手的電動工具中，在卜、f々k ±α 卜成的下 Μ 纟迷外殼的後端下部和把手 端上部之間的内側形成空間冑，在此空間部，控制上 1馬達的迴轉的迴轉控制用電子零件以及將產生自該迴 轉控制用電子零件的熱散熱的散熱構件被配置。 根據上述的電動工具，在外殼的後端下部和把手的後 而上部之間的内側空間部’控制上述馬 生1! ra 1 j <褥的迴轉控 制用電子零件以及將產生自該迴轉控制用電 散熱的散熱構件被配置。由於上述空間部係 v 、… 卻風扇的附近，因為在冷卻風扇迴轉時十:：用的冷 提供迴轉控制用電子零件的冷卻效率二机動，可 U過熱的故障 ^042-87 47-pp 6 200800523 減少的信賴性高的電動工具。 又’上述空間部係在外殼的後端下部和把手的後端上 部之間的内側被形成’因為不需特別在外殼設置大空間而 可形成，可將外殼保持為小型化，又，不會損害把手尺寸。 又，在上述外殼方面，在上述迴轉控制用電子零件的 附近，將送至上述冷卻風扇的立氣導人的吸氣孔形成也 〇 在上述迴轉控制用電子零件的附近、將送至上述冷卻 風扇的空氣導入的吸氣孔形成時，迴轉控制用 冷卻效率係良好。 Θ 其他特徵和效果係從實施例的記載和添付的申，真 利範圍明白。 甲°月專 【貫施方式】 基於圖示說明本發明的典型實施例。 ^ 弟^圖係為有關本發明的典型實施例的衝擊起子的側 面圖第2圖係為第！圖的χ—χ線上的剖面圖，第3圖係 為將主要部份以剖面表示的衝擊起子的部份側面圖。 在上圖中，符號1表示上述衝擊起子的工具本體。在 工=本體，1的外殼2的後部㈣有馬達3,在馬達3的前 方认置~部風扇4，又，在其前方收納有藉由行星齒輪等 的減速部5以及鎚（hammer)、砧（anvU)等的迴轉驅動部 6，在外殼2的前端設置迴轉驅動傳達部7。在迴轉驅 達部7的前端部，起子鑽（driverblt，未圖示）係可^7042-8747-PF 5 200800523 Disadvantages 'The flow path of the cooling air sent from the cooling fan to the " motor becomes longer, and the efficiency of the motor is reduced. Also, 曰本特开(10)5_〇74613 is because there is no extra space inside the handle, and there is a question about the heat dissipation. Again, because the handle is not inflated, the handle is thicker. . SUMMARY OF THE INVENTION One or more cases of the apricots of the present invention provide a case in which the outer casing of the electric tool is not provided, and the size of the handle is increased, and the cooling efficiency of the electronic components for the rotation control is good. A power tool that has a low P or an early reduction in output efficiency and is reliable. According to one or more examples of the upper yoke of the present invention, the slewing drive transmission portion is provided in the front portion of the front portion of the back drive shackle that accommodates the motor as the drive source in the front portion. In the electric tool of the handle, a space 形成 is formed on the inner side between the lower end of the rear end of the outer casing and the upper end of the handle end, and the space of the motor is controlled to rotate the upper motor. The electronic component for the swing control and the heat radiating member that generates heat from the heat-receiving electronic component are disposed. According to the above-described electric power tool, the inner space portion between the lower end of the rear end of the outer casing and the rear and upper portions of the handle is controlled to control the electronic components of the slewing control of the horse; and the slewing control is generated from the slewing control A heat dissipating member that radiates heat is configured. Because the space part v,... is in the vicinity of the fan, because the cooling of the cooling fan is used to provide the cooling efficiency of the electronic components for the swing control, the U can be overheated. ^042-87 47-pp 6 200800523 Reduced reliability of power tools. Further, the space portion is formed on the inner side between the lower end portion of the rear end of the outer casing and the upper rear end portion of the handle. 'Because it is not necessary to provide a large space in the outer casing, the outer casing can be kept small, and the outer casing can be kept small. Damage the handle size. Further, in the case of the outer casing, the intake hole that is sent to the vertical air guide of the cooling fan is formed in the vicinity of the electronic component for rotation control, and is sent to the cooling. When the air intake hole of the fan is formed, the cooling efficiency for the swing control is good. Θ Other features and effects are apparent from the description of the examples and the claims. A month specific mode [Embodiment mode] An exemplary embodiment of the present invention will be described based on the drawings. ^图图 is a side view of an impact driver relating to an exemplary embodiment of the present invention, and Fig. 2 is the first! The cross-sectional view on the χ-χ line of the figure, and Fig. 3 is a partial side view of the impact driver showing the main part in section. In the above figure, reference numeral 1 denotes a tool body of the above-described impact driver. In the rear part (4) of the casing 2 of the work unit 1 , the motor 3 is provided, and the fan 4 is placed in front of the motor 3, and the speed reducing portion 5 such as a planetary gear or the like and a hammer are accommodated in front of the motor 3; The turning drive unit 6 such as an anvil (anvU) is provided with a turning drive transmission unit 7 at the front end of the casing 2. At the front end portion of the rotary drive portion 7, a screwdriver (not shown) can be used.
7042-8747-PF 7 200800523 地被構成。 又’在外殼2的下部設置把手8。在把手8的前部配 置馬達作動用扳柄9。在把手8,和板相9的操作連動以 開閉接點的開關10被設置，且電池電源U也被設置。開 關10係和上述馬達3、尨+、 連接， 後一 12、電池電源Π電性 FET 12係為控制馬達3迴轉用的迴轉控制用電子零 ::配置在形成於上述外殼2的後端下部和把手8的後端 的==ΓΓθ”"。！即，如上述般，在外殼2 *々 々？酉己置，在外殼2的馬達3的周圍，冷卻 ::的及亂孔13被形成。同樣地，在配置 卻風扇4的周圍，排氣孔Η被形成。又，在： =:二之間，分隔板15被安裝。此係由於藉 由~部風4 4被吹散至外侧的空氣係不 側’而作為從排氣孔14被排出的方心]及亂孔13 又，在馬達3的下部，沿著馬達 被形成的散熱構件16被安裝，在= 广以圓弧狀 的下部，迴轉控制用電子零件12被固定 =γ 迴轉控制用電子零件12#祜阶wL …、構件16和 附近。 牛12係被配置在外殼2的吸氣孔13的 根：上述構成的話’將扳柄9拉引操作的*，馬達3 馬達3的迴轉係以減速部5被減速，被傳 驅動傳達部7,起子鑽迴轉，螺絲停 迴轉 迴轉控制用電子零件12被設置，藉由扳柄9:二= 7 04 2~87 4 7-pp 8 200800523 在連續 同時， 2内， 大】、，拉引κ愈大的話，馬達3的迴轉數愈提高。 此作業中，馬達3係發熱，但@為和馬達3迴轉的 冷卻風扇4也迴轉，外氣從吸氣孔13被導入至外殼 將馬達3冷卻後，從排氣孔14被排出。 & 和馬達3同時，迴轉控制用電子零件12也發熱。又， 迴轉控制電子零件12係被安裝在散熱構件Μ， j7042-8747-PF 7 200800523 The ground is constructed. Further, a handle 8 is provided at a lower portion of the outer casing 2. A motor actuating trigger 9 is disposed at the front of the handle 8. A switch 10 for opening and closing the contacts in conjunction with the operation of the handle 8 and the plate phase 9 is provided, and the battery power source U is also set. The switch 10 is connected to the motor 3, 尨+, and the latter 12, and the battery power FET 12 is a slewing control electronic zero for controlling the rotation of the motor 3: disposed at a lower end of the rear end of the casing 2 And ==ΓΓθ"" of the rear end of the handle 8; that is, as described above, in the outer casing 2, the casing 2 is placed, and around the motor 3 of the casing 2, the cooling: and the disordered holes 13 are formed. Similarly, the vent hole is formed around the arrangement of the fan 4. Again, between: =: two, the partition plate 15 is installed. This is because the portion wind 4 4 is blown to The outer air is not "side" and is the center of the exhaust hole 14 and the chamfered hole 13 is attached to the heat radiating member 16 which is formed along the motor in the lower portion of the motor 3, and is widened by an arc. In the lower part of the shape, the electronic component 12 for rotation control is fixed = γ rotation control electronic component 12#祜wl, member 16 and the vicinity. The cow 12 is disposed at the root of the intake hole 13 of the outer casing 2: the above configuration '* that pulls the trigger 9 to operate, and the rotation of the motor 3 motor 3 is decelerated by the speed reducing portion 5, and is transmitted to the transmission unit 7, The sub-drill is rotated, and the electronic component 12 for screw rotation and rotation control is set, by the trigger 9: two = 7 04 2~87 4 7-pp 8 200800523 in the continuous simultaneous, 2, large, and When the motor 3 is large, the number of revolutions of the motor 3 is increased. In this operation, the motor 3 is heated, but the cooling fan 4 that is rotated by the motor 3 is also rotated, and the outside air is introduced into the casing from the intake hole 13 to cool the motor 3. At the same time as the motor 3, the electronic components 12 for the slewing control are also heated. Further, the slewing control electronic component 12 is mounted on the heat dissipating member Μ, j
熱㈣16係被設在上述吸氣孔13的附近，在上述冷卻: 的工氣的w動中被配置。又，由於迴轉控制用電子零件12 ^被配置在上《氣的流動中’除了直接與空氣接觸而被 ~部之外’因為散熱構件i 6也同樣地接觸冷卻用空氣 所以迴轉控制用電子零# 12的本身發熱也經由散熱構件 16散熱、被冷卻。又’由於上述迴轉控制電子零件係被配 置在吸氣孔13附近，不會直接受到馬達3的發熱的影響。 因此’可提供迴轉控制用電子零件12的冷卻效率良 好、因過熱的故障或輸出效率的降低係減少、而信賴性高 的電動工具。 、 ° 又，由於散熱構件16以及迴轉控制用電子零件12被 設二的空間部S係，可在藉由從電動工具的所定的使用被 決定的馬達3的直徑、或從冷卻能力被決定的冷卻風扇4 的直徑所定的外殼2的外徑、和強度、作業性、美觀、製 作性等’滿足設計上被要求的光滑型態的要求的範圍内設 置，不會將不好影響全部及於外殼2的尺寸。又，把手的 尺寸也可保持為纖細（s 1丨m )。 又，上述實施例係關於衝擊起子，但本發明係並不限 7042-8747-PF 9 200800523 定在衝擊起子。如電動鑽頭（dri⑴等的電動工具般 可適用在使用馬達的迴轉控制用電子零件的物件。 雖然本發明已以較佳實施例揭露如上，麸1 =明:任何熟習此技藝者，在不脫離:發明之= ::祀圍内，當可作些許之更動與潤錦，因此本發明 靶圍當視後附之申請專利範圍所界定者為準。 /、 本申請係為基於2006年3月3G日中請的日本特呼出 願（日本特願2_-〇953δ4)的物件，其内容在此作為 而被放入。 本發明係可利用在衝擊起子等的電動工具。 【圖式簡單說明 面圖； 弟1圖係為有關本發明的典型實施例的衝擊起子的側 :2圖係為第i圖$ χ_χ.上的剖面圖；以及 第3圖係為將主要部份以剖面表示的衝擊起子的部份 側面圖 【主要元件符號說明】 s空間部、 1工具本體、 2外殼、 3馬達、 4冷卻風扇、The heat (four) 16 series is provided in the vicinity of the air intake hole 13, and is disposed in the w motion of the cooling: work gas. In addition, since the electronic components 12 for the turning control are disposed in the upper flow of the gas, except for the direct contact with the air, the electronic component 12 is also contacted with the cooling air. The heat generated by #12 itself is also radiated through the heat radiating member 16, and is cooled. Further, since the above-described swing control electronic component is disposed in the vicinity of the intake hole 13, it is not directly affected by the heat generated by the motor 3. Therefore, it is possible to provide a power tool having excellent cooling efficiency of the electronic component 12 for slewing control, reduction in overheating, reduction in output efficiency, and high reliability. Further, since the heat radiating member 16 and the swing control electronic component 12 are provided with the two space portions S, the diameter of the motor 3 determined by the predetermined use of the power tool or the cooling capacity can be determined. The outer diameter of the outer casing 2 and the strength, workability, aesthetics, manufacturability, etc. of the outer diameter of the cooling fan 4 are set within a range that satisfies the requirements of the smooth type required for design, and does not adversely affect all of them. The size of the outer casing 2. Also, the size of the handle can be kept slim (s 1 丨 m ). Further, the above embodiment relates to an impact driver, but the present invention is not limited to 7042-8747-PF 9 200800523. For example, an electric drill such as a dri (1) can be applied to an electronic component using a motor for slewing control. Although the present invention has been disclosed in the preferred embodiment as above, the bran 1 = Ming: Anyone skilled in the art does not leave : Invention = :: Within the scope of the application, when a few changes and brocades can be made, the scope of the invention is defined by the scope of the patent application. /, This application is based on March 2006 The article of the Japanese special offer (Japan's special wish 2_-〇953δ4), which is requested by the Japanese in the 3rd day, is placed here. The present invention is applicable to a power tool such as an impact driver. Figure 1 is a side view of an impact driver relating to an exemplary embodiment of the present invention: 2 is a cross-sectional view on the i-th image: χ_χ.; and the third figure is an impact of the main portion in a cross-section. Partial side view of the screwdriver [main component symbol description] s space part, 1 tool body, 2 outer casing, 3 motor, 4 cooling fan,
7042-8747-PF 10 200800523 7迴轉驅動傳達部、 8把手、 9扳柄、 10開關、 12迴轉控制用電子零件、 ϊ 13吸氣孔、 1 5分隔板、 16散熱構件。7042-8747-PF 10 200800523 7 Slewing drive transmitter, 8 handles, 9 triggers, 10 switches, 12-turn control electronic parts, ϊ 13 suction holes, 15 partition plates, 16 heat sink members.
7042-8747-PF 117042-8747-PF 11