200936323 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種撞擊驅動器 動狀態而判斷係鎖木螺# i 、據尖端軸的轉 研你領木螺絲或鎖螺拴， 螺絲或螺栓鎖緊。 適S的轉速將木 【先前技術】 一般，如撞擊驅動器或撞擊扳手 專利文獻Η所示，將馬達的轉動能量館存於::具每t =定時間瞬間釋放彈簧所儲存的能量，使鎚轉動，朝：: 動方向撞擊尖端軸的糾。利用藉該撞擊力所得之 矩，使設置於工具本體之尖端的驅動器、板 „、二 轉動，而使螺絲或螺栓轉動。 D 之义端軸 :是，為了利用撞擊驅動器以高速鎖入木螺 使才里擊力變大，還使撞擊次數變多 要 4*. , 疋 為了利用大的 里 鎖入，因為必須配備大的 p T放=·丄A I 穴的鍵等’所以不 于不使工具本身變得大型。因此 Β ^ ϊ§ τ ^ ,, 受以间迷鎖入木螺絲而 上:工具的小型化，必須增多撞擊次數而且提高輸出。 右 ，因為構成元件可小型，構造強度亦不太要求， 所以可得到即使小型作業性亦優異的工具。 [專利文獻1]特開平7— 314344 [專利文獻2]特開平10 — 18〇643 、可是，這種轉動工具不僅鎖木螺絲，而且常用於多用 途。例如，即使表示工具係、木螺絲用，亦若附近有可鎖入 7042-l〇〇9l-pF；Ahddub 5 200936323 的虫具的使用者可能以木螺絲用的工具鎖入螺检。 推—处 木f 4，而利用咼轉速規格的工具 進仃鎖螺栓作業時，鎚揸磐 θ 回到鎚。因而，撞墼的, 以反作用力從工具袖 、作用力施加於鎚，而鎚超過正常 7“碰撞㈣的構成元件。結果，不僅變成撞擊不 二且施加超過強度的撞擊，而發生損害耐久性之問題。 ❹ 參 2應付之，若根據鎖螺栓之耐久性而設定馬達轉速 受到二必須將轉速抑制為低速，所以木螺絲之鎖入速度 、制’而將用途限制為木螺絲之鎖人用，未發揮若設 疋马鬲速時應可期待的性能。 【發明内容】 月之種以上的實施例提供小型且高速的撞擊驅 、、、根據尖端軸的轉動狀態而判斷鎖木螺絲或鎖螺 '、’、適田的轉速鎖入木螺絲、螺栓等之各鎖入對象物， 可：保對象物的耐久性’而且良好地發揮鎖入速度。 右依轉本發明之一種以上的實施例，撞擊驅動器包 太辦馬ί ’鍵’係由該馬達驅動；尖端轴，係設置於工具 的前端’並由該鍵驅動而轉動；轉速檢測部，係檢測 速二達的轉速；記憶體’係記憶第1馬達速度和第2馬達 ^及控制°卩，係根據該轉速檢測部的檢測結果而判 =尖而軸的轉動狀態。該控制部在判定係該尖端轴轉動 止山1'時’以該第1馬達速度使該馬達轉動，而在判定該 、山轴未轉動時，以該第2馬達速度使該馬達轉動。 7〇42-l〇〇91.pp；Ahddub 6 200936323 在該撞擊驅動器，亦可該記憶體又記 速 度’該第1馬達速度係最適合木螺哼之J 、、、、 第2馬達速度係最適合 ’t、z馬達的轉速，该 σ螺栓之該馬達的轉速，該第3馬達 速度係在撞擊不良時用 速。 以正常地執行撞擊之該馬達的轉200936323 IX. INSTRUCTIONS: [Technical Field] The present invention relates to a state in which an impact driver is in motion and judges that the wood lock # i, according to the tip shaft, is turned into a wood screw or a lock bolt, a screw or a bolt Locked. Appropriate S speed will be wood [prior art] Generally, as shown in the impact drive or impact wrench patent document, the motor's rotational energy is stored in:: The energy stored in the spring is released every t = fixed time, so that the hammer Rotate, toward:: Correction of the tip axis in the moving direction. Using the moment obtained by the impact force, the driver, the plate, and the second set at the tip end of the tool body are rotated to rotate the screw or the bolt. The end shaft of the D: Yes, in order to lock the wood snail at high speed by using the impact driver In order to increase the impact force in the talent, it is necessary to increase the number of impacts by 4*. 疋In order to use the large lock, it is necessary to equip the large p T to put the key of the AI hole, etc. The tool itself becomes large. Therefore, Β ^ ϊ§ τ ^ , is locked into the wood screw: the miniaturization of the tool must increase the number of impacts and increase the output. Right, because the components can be small, the structural strength is also Because it is not required, it is possible to obtain a tool which is excellent in small workability. [Patent Document 1] Japanese Patent Laid-Open No. Hei 7-314344 [Patent Document 2] Japanese Patent Laid-Open No. Hei No. Hei No. Hei. And it is often used for many purposes. For example, even if it is used for tooling and wood screws, there is a lock that can be locked in the vicinity of 7042-l〇〇9l-pF; the user of the insects of Ahddub 5 200936323 may be a tool lock with wood screws. Into the thread inspection. Push - At the wood f 4, when using the 咼 speed specification tool to enter the 仃 lock bolt operation, the hammer 揸磐 θ returns to the hammer. Therefore, the slamming force is applied to the hammer from the tool sleeve and the force by the reaction force, and the hammer exceeds the normal 7 "Composition of collision (four). As a result, not only the impact is not changed but an impact exceeding the strength is applied, and the problem of impairing durability occurs. ❹ 参2, if the motor speed is set according to the durability of the lock bolt, the speed must be suppressed to a low speed. Therefore, the locking speed of the wood screw and the system are limited to the lock of the wood screw. If you set the Hummer speed, you should expect performance. SUMMARY OF THE INVENTION The above embodiments of the present invention provide a small and high-speed impact drive, and determine the locking screw or the lock screw ', ' according to the rotation state of the tip shaft, and the rotation speed of the field, the wood screw, the bolt, etc. Each of the objects to be locked can be used to ensure the durability of the object and to achieve a good locking speed. According to one or more embodiments of the present invention, the impact driver package is too driven by the motor; the tip shaft is disposed at the front end of the tool and is rotated by the key; the rotation speed detecting portion, The speed of the second speed is detected; the memory 'memorizes the first motor speed and the second motor and the control unit 卩, and the rotation state of the shaft is determined based on the detection result of the rotation speed detecting unit. The control unit rotates the motor at the first motor speed when it is determined that the tip shaft rotates the mountain 1', and when the mountain shaft is determined not to rotate, the motor is rotated at the second motor speed. 7〇42-l〇〇91.pp;Ahddub 6 200936323 In the impact driver, the memory can also record the speed. The first motor speed is the most suitable for the J,, and 2 motor speed systems of the wood screws. It is most suitable for the rotational speed of the 't, z motor, the rotational speed of the motor of the σ bolt, and the third motor speed is used when the impact is poor. The rotation of the motor to perform the impact normally
在該撞擊驅動器，I 、可該轉速檢測部檢測到該轉速波 動係不穩疋時，該控制部將 寻馬達速度徐降至可正常地撞擊。 =撞擊驅動器，亦可將用以正常地執行撞擊之馬達 ^子於該s己憶體，該轉速檢測部檢測到該轉速波動係 :穩定時，該控制部以用以正常地執行撞擊之馬達速度使 該馬達轉動。 在該撞擊驅動器，亦可該控制部係根據在該波動週期 的-個週期之該馬達的轉動量和既定值的差，而判定尖端 軸有沒有轉動。 φ 在該撞擊驅動器，亦可該一個週期係從撞擊至下一次 撞擊的期間。 在該撞擊驅動器，亦可該控制部係根據從撞擊至下一 次撞擊的時間，而判定尖端軸有沒有轉動。 θ在/撞擊驅冑器亦ι分段地設定該尖端轴的轉動 量並對應於所設定之轉動量而分段地設定該馬達速度。 在„亥撞擊驅動器’亦可從高轉速至低轉速分段地設定 該馬達速度，並可選擇該馬達速度。 、山右依據本發明之一種以上的實施例，@制部在判定係 尖端轴轉動之狀態時’控制部令馬達以最適合鎖木螺栓之 7〇42-l〇〇91_PF;Ahddub 200936323 .、·’達速度轉動，而在判定尖端袖未 以適合鎖螺控制部令馬達 最佳之馬達Μ、* 頰入木螺絲時能以 又，^速施加轉動撞擊，而能以高速進行鎖入作業。 任判定尖端軸未轉動時，控制部令 栓之馬達糙、φ 7馬達以適合螺 得速轉動。因而，鎖入螺栓時， 降低至最隹r m u為馬達的轉速 内部的構成Γ所以不會發生超越正常動作範圍而碰撞 現象。兀件，或施加超過強度之撞擊而損害对久性的 對象不需要作業員之設定或調整’而因應於各鎖入 :最佳的撞擊設定，因為對構成元件施加 =的撞擊不會連續，所以確保耐久性，而且雖小型卻 月匕以尚速進行木螺絲的鎖入作業。 此外’該轉速檢測部檢測到該轉速波動係不穩定時， 撞度降低至可正常地撞擊之速度的方式構成該 =擊驅動H的情況，將㈣不良狀g自動地修正成正常撞 擎狀態。 檢測到B亥轉速波動係不穩定時在以從記憶體讀 可正常地&擊之馬達轉速並使馬達轉動的方式構成該撞 擊驅動器的情況，可馬上得到正常的撞擊。 又在以根據在該波動週期的一個週期之該馬達的轉 動里牙既疋值的差而判定尖端軸有沒有轉動之方式構成該 撞擊驅動器的情況，可不必考慮電池的電壓或馬達特性的 變動等。 又在以因應於穴端軸的轉動量而改變馬達速度之方 7〇42-l〇〇91-PF;Ahddub 8 200936323 ’ 構成11亥撞擊驅動器的情況，若尖端轴的轉動量變大，馬 達速度變决，若尖端轴的轉動量變小，馬達速度變慢。因 可根據鎖入木螺絲之深度、鎖入對象的硬度等而自動 地設定最佳之馬達速度。 又在以可因應於作業環境或作業效率而設定馬達速 度之方式構成該撞擊驅動器的情況，作業員可自由地設定 轉速’在鎖入對象的材質係軟的，或即使動作聲音大亦想 Φ k速地鎖入時，設定咼轉速，在安靜的環境進行作業的情 況設定中轉速，為了避免發生小螺絲頭飛了等而設定低轉 速等。 由實施例之記載及附加的申請專利範圍將更明白其他 的特徵及效果。 【實施方式】 以下，根據圖面說明本發明之典型的實施例。 Φ 帛1圖係省略一部分表示典型的實施例之撞擊驅動器 的剖面圖。符號1表示工具本體。 本撞擊驅動器在木螺絲的鎖入發揮最大的功能。將馬 達2、減速機構3、活塞4、鎚5以及尖端軸6串列地收^ 配置於工具本體1的後部。把手7設置於工具本體1的下 部。扳機8配置於把手7的前部。 馬達2係即使小型亦能以高性能自由地控制轉速的無 刷馬達。馬達2的轉軸經由行星齒輪的減速機構3而和活 塞4動作連結。鎚5自由轉動地安裝於活塞4的前端。撞 7042-10091-PF;Ahddub 9 200936323 擊邓10犬出开/成於鎚5的前端。尖端軸6自由轉動地設置 於工具前端。於尖端軸6的後端，鐵砧11形成於可和該撞 擊。P 10卡合的位置。V字形（為了應付正反轉）的凸輪槽12已 形成於該活塞4的外周。球13和該凸輪槽12a及形成於鍵 5之内周面的凸輪槽i2h丰人 ^ w 1 Zb卡合。又’利用彈簧14將鎚5總 是向前方偏壓。此外，作為尖•具的鑽頭（未圖示）安裳 於尖端軸6。 參 尖端轴6無負載時，經由減速機構3向活塞4和鍵5 傳達馬達2的轉動。又，鍵5的撞擊部1〇和鐵石占n卡合， 向尖端軸6傳達馬達2的轉動。尖端軸6因應於馬達2之 轉軸和活塞4的齒輪比而轉動。 如以驅動器頭鎖入木螺絲的情況所示，負載作用於尖 端軸6時，因為在鍵5和尖端軸6之間在由該球13和凸輪 槽12a、i2b所限制之範圍内產生相對轉動，所以鎚5壓缩 彈簧14而後退，並將活塞4之轉動能量儲存於㈣Μ。 然後，撞擊部1〇和鐵石占11的卡合解除，撞擊部1〇超越鐵 站U時，利用彈菁14的彈力而鍵5_面轉動一面前進， 撞擊鐵站n，利用該撞擊所產生之扭矩使尖端 ^僅轉動固定的轉動角’而鎖入木螺絲。鎖入木螺絲而 你，變大m和活塞4進行相對轉動，鎚5再塵縮彈 :而後退，並將活塞4的轉動能量館存於彈簧14,撞 部10脫離鐵石占11後，利用彈簧^的彈力轉動並撞擊鐵 石占n，使尖端軸6進-步轉動。藉由重複之 ， 地撞擊尖端軸6 一面令轉動。 斷， 7〇42-l〇〇91-PF/Ahddub 10 200936323 第2圖係表示撞擊驅動器的方塊圖。符號15表示馬達 的轉速檢測部，16表示控制部，17表示記憶體，18表示 主開關，20表示DC — DC轉換器，其將從電池組所供給之 電壓轉換成使該控制部16動作的電壓，21表示半導體開 關’ 22表示扳機開關。In the impact driver, when the rotation speed detecting unit detects that the rotation speed is unstable, the control unit reduces the seek motor speed to a normal impact. = impact driver, the motor for normally performing the impact is also applied to the suffix, the rotation speed detecting portion detects the rotation speed fluctuation system: when stable, the control portion is used to normally perform the impact motor The speed causes the motor to rotate. In the impact driver, the control unit may determine whether or not the tip shaft is rotated based on a difference between the amount of rotation of the motor and the predetermined value in one cycle of the fluctuation cycle. φ In the impact drive, the one cycle may also be from the impact to the next impact. In the impact driver, the control unit can also determine whether or not the tip shaft is rotated based on the time from the impact to the next impact. The θ/impact ejector also sets the amount of rotation of the tip shaft in sections and sets the motor speed in sections corresponding to the set amount of rotation. The motor speed can also be set in sections from high speed to low speed in the "Hai impact driver", and the motor speed can be selected. According to one or more embodiments of the present invention, the @制部 is in the judgment system tip axis In the state of rotation, the control section makes the motor 7〇42-l〇〇91_PF which is most suitable for locking wood bolts; Ahddub 200936323 .··· speeds up, and it is determined that the tip sleeve is not suitable for the lock screw control unit. Good motor Μ, * When the cheek is screwed into the wood, the rotary impact can be applied at a constant speed, and the locking operation can be performed at a high speed. When it is determined that the tip shaft is not rotated, the control unit makes the motor of the bolt rough, and the φ 7 motor It is suitable for the screw to rotate at a speed. Therefore, when the bolt is locked, it is reduced to the end of the rpm, which is the internal structure of the motor. Therefore, the collision phenomenon does not occur beyond the normal operating range. Long-term objects do not require the operator's setting or adjustment' and are adapted to each lock: the optimum impact setting, because the impact applied to the component is not continuous, so durability is ensured, and small However, the lock operation of the wood screw is performed at a constant speed. Further, when the rotation speed detecting unit detects that the rotation speed fluctuation is unstable, the collision degree is reduced to a speed at which the collision can be normally performed. (4) The defect g is automatically corrected to the normal collision state. When the fluctuation of the B-speed is detected, the impact driver is configured to read the normal rotation of the motor and rotate the motor from the memory. In the case of a normal impact, the impact driver can be constructed in such a manner that the tip shaft is not rotated according to the difference in the value of the rotation of the motor during one cycle of the fluctuation cycle. It is not necessary to consider the voltage of the battery or the variation of the motor characteristics, etc. In addition, the motor speed is changed in accordance with the amount of rotation of the hole end shaft 7〇42-l〇〇91-PF; Ahddub 8 200936323 ' constitutes the 11-Heil impact driver In this case, if the amount of rotation of the tip shaft becomes larger, the motor speed becomes smaller, and if the amount of rotation of the tip shaft becomes smaller, the motor speed becomes slower, because the depth of the wood screw can be locked, and the lock pair can be locked. The optimum motor speed is automatically set, such as the hardness, etc. In the case where the impact drive is configured in such a manner that the motor speed can be set in accordance with the work environment or the work efficiency, the operator can freely set the rotational speed 'in the locked object. If the material is soft, or if you want to lock the Φ k speed even when the operation sound is large, set the 咼 rotation speed, set the rotation speed when working in a quiet environment, and set the low rotation speed to avoid the occurrence of small screw head flying. Other features and effects will be apparent from the description of the embodiments and the appended claims. <RTIgt; </ RTI> EMBODIMENT Hereinafter, a typical embodiment of the present invention will be described with reference to the drawings. For example, a cross-sectional view of the impact driver. Symbol 1 indicates the tool body. This impact drive has the greatest function in locking the wood screws. The motor 2, the speed reduction mechanism 3, the piston 4, the hammer 5, and the tip end shaft 6 are arranged in series in the rear portion of the tool body 1. The handle 7 is disposed at the lower portion of the tool body 1. The trigger 8 is disposed at the front of the handle 7. The motor 2 is a brushless motor that can control the rotational speed freely with high performance even when it is small. The rotating shaft of the motor 2 is operatively coupled to the piston 4 via the reduction mechanism 3 of the planetary gear. The hammer 5 is rotatably attached to the front end of the piston 4. Hit 7042-10091-PF; Ahddub 9 200936323 Hit Deng 10 dog out / into the front end of the hammer 5. The tip shaft 6 is rotatably disposed at the front end of the tool. At the rear end of the tip shaft 6, an anvil 11 is formed to be able to collide with the impact. P 10 snapped position. A cam groove 12 having a V shape (to cope with the forward and reverse rotation) has been formed on the outer circumference of the piston 4. The ball 13 and the cam groove 12a and the cam groove i2h formed on the inner circumferential surface of the key 5 are engaged with each other. Further, the hammer 5 is always biased forward by the spring 14. Further, a drill (not shown) as a tip is attached to the tip shaft 6. When the tip shaft 6 has no load, the rotation of the motor 2 is transmitted to the piston 4 and the key 5 via the speed reduction mechanism 3. Further, the striking portion 1A of the key 5 and the iron occupying n are engaged, and the rotation of the motor 2 is transmitted to the tip end shaft 6. The tip shaft 6 is rotated in response to the gear ratio of the rotating shaft of the motor 2 and the piston 4. As shown in the case where the driver head is locked into the wood screw, the load acts on the tip shaft 6, because the relative rotation between the key 5 and the tip shaft 6 within the range restricted by the ball 13 and the cam grooves 12a, i2b Therefore, the hammer 5 compresses the spring 14 and retreats, and stores the rotational energy of the piston 4 in (4) Μ. Then, the engagement between the impact portion 1〇 and the iron core 11 is released, and when the impact portion 1〇 is over the iron station U, the elastic force of the elasticite 14 is used to advance the surface while the key is rotated, and the iron station n is struck by the impact. The torque causes the tip to rotate only a fixed angle of rotation' and locks the wood screw. Lock the wood screw and you, the big m and the piston 4 rotate relative to each other, the hammer 5 re-shrinks the bomb: and retreats, and the rotating energy of the piston 4 is stored in the spring 14, and the collision part 10 is separated from the iron stone and takes 11 The spring force of the spring rotates and strikes the stone to occupy n, causing the tip shaft 6 to rotate in a stepwise manner. By repeating, it strikes the tip shaft 6 to rotate. Broken, 7〇42-l〇〇91-PF/Ahddub 10 200936323 Figure 2 is a block diagram showing the impact driver. Reference numeral 15 denotes a motor rotation speed detecting unit, 16 denotes a control unit, 17 denotes a memory, 18 denotes a main switch, and 20 denotes a DC-DC converter that converts a voltage supplied from the battery pack to operate the control unit 16. Voltage, 21 indicates that the semiconductor switch '22 indicates a trigger switch.
❹ 此外，半導體開關21係由功率電晶體、反相器等之切 、、元件所構成，並根據該控制部丨6的驅動信號而控制對馬 達2供給的電力’以控制馬達的轉速、轉動以及停止。 . 轉速檢測部15係由霍耳（Ha⑴感測器或探索線圈 々、感測益所構成，若係霍耳感測器，亦可作成可從對應 ^馬達2之轉軸所安裝的磁鐵之磁通的變化週期檢測馬達 、二速；6·係探索線圏，可作成可從感應電壓以類比值檢 别轉速。 二外’負載作用於尖端軸6時’在越5和尖端軸6之 轉㈣壓縮彈黄14而後退，並將活塞4的 轉動h儲存於彈簧14。然後，撞擊部10超越鐵石占， 瞬間釋放彈簧1 4所儲在的At θ 時 動存的此1，而利用該彈力使鎚5轉 動’並朝向尖端轴6的轉向撞擊鐵❹ 的週期進行下撞擊。如此 h由相同 定值而變化，所以在撞;和=作用於馬達2的負載不是 轉速會波動。纟撞擊和撞擊之間的-個週期之馬達的 又，記憶體17不僅記憶控制程式 達轉速（第1馬達速度）、對螺mm =最佳之馬 達速度)以及在撞擊不良時可正 ：(第2馬 單之馬達轉速（第3 7042-l〇〇91-PF；Ahddub ,, 200936323 馬達速度）。 該控制部16係以如下之方式構成，根據内建之記憶體 17所永久記憶的控制程式及來自定時器電路2〇的定時器 信號t，每經過單位時間就測量馬達2的轉速，並根據轉 速之變化而監視馬達的轉速波動，而且控制用以驅動控制 施加於馬達2之定子線圈的電壓之切換元件（例如功率電 晶體）的驅動信號，以控制馬達2的轉速、動作以及停止。 該控制部16根據轉速檢測部15之檢測結果，而判定 現在的鎖入係鎖木螺絲之狀態，或鎖螺栓之狀態。因而， 只要得知由轉速檢測部丨5所檢測之馬達2的撞擊間之馬達 轉動量即可。 在負載作用於尖端軸6的情況，馬達2的轉速如第3(幻 圖所示般波動。這係顯示撞擊部1〇撞擊鐵砧u時之負載 的變動’波動週期表示撞擊的間@。從該期間之馬逹轉動 量推測尖端軸的轉動量。Further, the semiconductor switch 21 is composed of a power transistor, an inverter, or the like, and is configured by an element, and controls the electric power supplied to the motor 2 based on the drive signal of the control unit 6 to control the rotation speed and rotation of the motor. And stop. The rotation speed detecting portion 15 is composed of a Hall (Ha (1) sensor or a search coil, and a sensory sensor. If a Hall sensor is used, it can also be made into a magnet that can be mounted from a shaft corresponding to the shaft of the motor 2. Through-change cycle detection motor, two-speed; 6·-exploration line 圏, can be made to detect the rotation speed from the induced voltage by analogy. Second, when the load acts on the tip axis 6, the rotation between the 5 and the tip axis 6 (4) compressing the spring 14 and retreating, and storing the rotation h of the piston 4 in the spring 14. Then, the striking portion 10 is beyond the iron core, and instantaneously releases the 1 at the time of At θ stored in the spring 14 and utilizes the The elastic force causes the hammer 5 to rotate 'and strikes toward the period of the steering of the tip shaft 6 against the shovel. Thus h changes by the same setting, so it is hit; and = the load acting on the motor 2 does not fluctuate. In addition to the motor of the cycle between the impact and the impact, the memory 17 not only memorizes the control program up to the rotational speed (the first motor speed), but also the screw mm = the optimum motor speed) and can be positive when the impact is poor: (2nd) Madan's motor speed (3rd 7042-l〇〇91-PF; Ahddub , 200936323 Motor speed). The control unit 16 is configured to measure each unit time based on a control program permanently stored in the built-in memory 17 and a timer signal t from the timer circuit 2〇. The rotation speed of the motor 2, and monitoring the rotation speed fluctuation of the motor according to the change of the rotation speed, and controlling a driving signal for driving a switching element (for example, a power transistor) that controls the voltage applied to the stator coil of the motor 2 to control the motor 2 The rotation speed, the operation, and the stop. The control unit 16 determines the state of the current lock-in lock screw or the state of the lock bolt based on the detection result of the rotation speed detecting unit 15. Therefore, it is known that the rotation speed detecting unit 丨5 It is sufficient to detect the amount of motor rotation between the impacts of the motor 2. When the load acts on the tip shaft 6, the rotation speed of the motor 2 fluctuates as shown in the third figure (this shows that the impact portion 1 〇 impacts the anvil u The fluctuation of the load at the time 'the fluctuation period indicates the interval between the impacts. @ The amount of rotation of the tip axis is estimated from the amount of rotation of the horse during this period.
利用撞擊驅動器鎖入螺栓時(而且，螺栓的頭部靠在被 鎖入對象時），以撞擊部1G#擊鐵石占u，尖端軸6亦幾乎 不會轉動，而鐵砧Π停在原來的位置。 因為撞擊部10每次撞擊逐次撞擊不會動的鐵石占⑴ 所以撞擊部10僅移動撞擊鐵石占u所需的轉動角。因此， 尖端轴6不轉動時之馬達2的轉動量變成由馬達2和撞擊 部1〇的齒輪比等之由構成元件所決定的既定值。 因撞擊而尖端軸6轉動 亦僅前進相同的轉動角 另一方面，在木螺絲的情況， 因為鐵石占11和鍵5的撞擊部1〇 7042-10091-PF；Ahddub 12 200936323 所以至進行下一撞擊動作，臣、表 Ύ 馬達2必須額外地轉動鎚5所 前進的量。 因而，尖端軸6轉動睹夕臣、土 曰 呀之馬達2的轉動莖，一定比尖 端轴6不轉動時多。因此， u此’檢測從馬達2之轉速波動的揸 擊至下'~次撞擊的馬達植叙县 得勤量’再根據檢測值係尖端軸6 不轉動時的轉動量或其近如抽 ^ 、^乂值、或比其更多，而可推測尖 端轴6是否轉動。_ a 而’可判定現在的鎖入係鎖螺栓之狀 癌（尖轴6未轉動），或盤士 A宙… 4鎖木螺絲之狀態（尖端轴6轉動）。 而’在控制部16判定在蚀丄 J疋係鎖木螺絲之狀態時，進行在記 憶體1 7所記憶之對木螺蜱畀技a %、，，糸最佳的馬達轉速（第1馬達速度） 之穩定控制。又，推測王目+ k 只』現在的鎖入係鎖螺栓之狀態時，進 行在對螺栓最佳之馬達 g轉速（第2馬達速度）的穩定控制。 依此方式，可設定因應於用途的撞擊。 其次，根據第4圖的法1 _的机程圖而說明該撞擊驅動器的動 作形態。 m 參 使扳機開關動作時（牛 蛛县技 C步驟ST1)，馬達2以對鎖入木螺 4最佳之既定轉速N2糙私 轉動，而開始撞擊。開始撞擊後，推 測尖端軸6的轉動狀能r μ ^ θ , μ (步驟ST2)。然後，判斷尖端軸的 轉動置係零或接近零的 是零時，判定尖端軸二動或者不是零(步驟ST3)’在不 對木螺絲最佳之馬達轉Γ，是鎖木縣之㈣，並保持 _ 辨速，繼續撞擊至扳機開關變成不動 作為止（步驟ST4)。 而’在步驟ST3，出各山 時，# 夫、軸的轉動量為零或接近零的值 了 判疋現在的鎖入係锚淑 承頌螺栓之狀態’設定為適合鎖螺栓 7〇42-l〇〇91_pF；Ahddub 200936323When the bolt is locked by the impact driver (and the head of the bolt is placed against the object to be locked), the impact portion 1G# hits the stone and the tip shaft 6 hardly rotates, and the anvil stops at the original position. Since the impact portion 10 hits the rock which does not move each time by the impact, the impact portion 10 moves only by the angle of rotation required to hit the stone. Therefore, the amount of rotation of the motor 2 when the tip shaft 6 is not rotated becomes a predetermined value determined by the constituent elements such as the gear ratio of the motor 2 and the striking portion 1〇. Due to the impact, the tip shaft 6 rotates only to advance the same angle of rotation. On the other hand, in the case of wood screws, because the iron occupies the impact portion of the 11 and the key 5, 1 〇 7042-10091-PF; Ahddub 12 200936323, so proceed to the next The impact action, the motor, and the motor 2 must additionally rotate the amount by which the hammer 5 advances. Therefore, the tip shaft 6 rotates the turning stem of the motor 2 of the 睹 臣, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Therefore, u this 'detects the slamming from the fluctuation of the rotational speed of the motor 2 to the lower part of the motor that is hitting the '~ times of impact, and then according to the detected value, the amount of rotation when the tip axis 6 does not rotate or its near-like pumping ^ , 乂 value, or more, and it can be inferred whether the tip shaft 6 is rotated. _ a and can be judged that the current lock-in bolts are cancerous (the shaft 6 is not rotated), or the disc A... 4 the state of the lock wood (the tip shaft 6 is rotated). On the other hand, when the control unit 16 determines that the state of the eclipse lock is in the state of the eclipse, the snail is stored in the memory 17. The optimum motor speed (the first motor) is performed. Speed control). Further, it is presumed that when Wang Jin + k only locks the state of the lock bolt, the stable control of the motor g rotation speed (second motor speed) which is optimal for the bolt is performed. In this way, it is possible to set an impact in response to the use. Next, the operation mode of the impact driver will be described based on the machine map of the method 1_ of Fig. 4. When the trigger switch is actuated (Cole Spider Technology C Step ST1), the motor 2 starts to collide with a predetermined rotation speed N2 that locks the wood screw 4 to the optimum speed. After the start of the impact, the rotational energy r μ ^ θ , μ of the tip shaft 6 is estimated (step ST2). Then, when it is judged that the rotation of the tip axis is zero or the value near zero is zero, it is determined that the tip axis is two-movement or not zero (step ST3)', and the motor that is optimal for the wood screw is turned, it is the lockwood county (four), and The _ speed is maintained and the collision continues until the trigger switch becomes inoperative (step ST4). And in step ST3, when the mountains are out, the value of the rotation of the #夫, the axis is zero or close to zero, and the state of the current lock-in anchor is shackled and the bolt is set to fit the lock bolt 7〇42- l〇〇91_pF;Ahddub 200936323
- '击 X 關變士 、 1並令轉動（步驟ST5)。然後，繼續至扳機開 哭战不動作, 螺栓之轉速ッ驟訂4)。如此，若設定成馬達2以適合 如返轉動’馬達2的轉動如第3(b)圖所示波動。 狀熊時人所7^ ’控制部16作成在判定係尖端軸6轉動之 轉動，而令以最適合鎖木螺栓之馬達轉速（第1馬達速度） 轉速（第 1定尖端軸6未轉動時，以適合鎖螺栓之馬達 ❹ ❹ 之馬達轉轉動°因而，鎖人木螺絲時能以最佳 而 木螺絲之鎖」轉動撞擊，並能以高速進行鎖入作業， <鎖入性能提高。 而，雖缺处 又長又粗3、’、,、貞入螺栓的情況亦是如此，但是在木螺絲係 馬这9 Γ或鎖人^象太硬的情況’轉速檢測部15所檢測之 、轉速波動可能如第3(c)圖所示，變成不均勻。因 在此情況，如第5圖所示，開始撞擊、 6的轉動壯能/止 推利穴軸 〜、（步驟ST2)，判斷尖端軸的轉速Na 近零的#，々土 ^ 判定馬遠Λ 零(步驟ST3)後’利用轉速檢測部15 ，”的轉速波動是否均勻且穩定（步驟ST6)，在 ⑽疋時’利用控制部16降低馬達的轉速(步驟ST7)。然德 再回到步驟ST6，判定馬達2賴速波動是否均句且穩^ ::均勻時再降低馬達2的轉速。依此方： 波動變成穩定。 a王轉迷 的對作ί…的轉速波動變成不均勾、不穩定時 、，广’亦可採用如下之構造’預先使記憶體17記憶用以 ’除不穩定之轉速波動的轉& Ν1’（適合鎖螺栓 其附近的轉速），如第6圖所示，在步驟ST6利用轉速檢測 7〇42-l〇〇91-PF;Ahddub 14 200936323 部15判定馬達2的轉速 , 逻波動疋否均勻且穩定，在轉速波動 為不穩疋時，馬上從記情體 U體1 7讀出，並將馬達2的轉速降 低至該轉速N1，。 ，運2的轉疋τ 根據第7圖所示之民、去〇 u ' 馬達2的轉速和撞擊力之關係觀察 以上的事項時’馬達2的絲、A & 的轉速愈向撞擊力亦變成愈大，鎖 螺絲性能亦提高。要在短日卑η古^， 短時間间效率地鎖入木螺絲，只要 提高馬達2的轉速即可。芒 右將該最佳之轉速（最適合木螺栓 ❿ 之馬達轉速）設為N2，太螺絲田 > 拉淑 木螺、、糸用之撞擊不良區域如第7圖 所示，位於更高之轉逮的區域。即，在鎖入木螺絲的情況， 因為鎚5的運轉能量係以螺絲扭矩㈣(轉動角）消耗，所 以對鎚5的反彈力小。因此，赭 q此以轉速Ν 2撞擊時，撞擊難變 成不狀。可是H具鎖人螺栓時，螺栓幾乎不動， 因為鍵5的運動能量原封不動地回到趟5，所以趟5利用 反作用而超過可動範圍’並撞擊構成元件。一樣地，根據 木螺絲的大小或鎖人對象的軟硬而轉速波動亦可能變成不 穩定。因A ’如第8圖所示，根據鎖螺絲之關係，在撞擊 變成不穩定的區域和適合木螺絲之鎖入的區域重疊。 因此，在該撞擊驅動器，作成預先設定基本上可高效 率地鎖入木螺絲的轉速，而在使螺栓轉動，或發生撞擊不 良時，令挪移至適合鎖螺栓或穩定撞擊之轉速ν1(νγ )。 如此，藉由因應於尖端軸6的轉動狀態而進行設定，而可 應付鎖木螺絲以外的使用狀態。 如以上所示，控制部16作成在判定係波動週期均勻， 且尖端軸6轉動之狀態時，令以最適合鎖木螺栓之馬達轉 7〇42-l〇〇91-PF;Ahddub 15 200936323 速轉動，而在判定該波動週期均勾，且尖端袖6未轉 鎖螺栓之馬達轉速轉動’又在檢測到該波動 不均句時，因應於需要而降低至可正 、 速。因而，鎖入木螺絲時，能以最佳^ =轉 撞擊，並能以高速進行鎖入作業， 、σ動 高。 仃鎖入作冑而木螺絲之鎖入性能提 ❹ 又，判定為尖端軸6未轉動時，或者判 係不均勻時，八以、态人破认 為波動週期 期，適°螺栓之馬達轉速轉動或者以波動週 -疋之馬達轉速轉動。因而，已鎖人螺栓時，因為 2的轉速降低至最佳範圍，所以不會發生超越正常動作範 圍而碰撞内部的構成元件，或施加超過強度之撞擊而損害 耐久性的現象。又，馬達2的轉速波動不均勻而變成撞; 不良之狀態時，因為令降低至可正常地撞擊之馬達轉速， 所以將撞擊不良狀態自動地修正成正常撞擊狀態。 如此，不需要作業員之設定或調整，而因應於各鎖入 對象=行最佳的揸擊設定，因為對構成元件施加大的衝擊 異吊的撞擊不會連續’所以確保耐久性’而且雖小型卻 能以高速進行木螺絲的鎖入作業。 、又’因為利用檢測馬達2之轉速的轉速檢測部！ 5判定 尖端轴6有沒有轉動’所以可不必考慮電池的電壓或馬達 特性的變動等。 此外，在上述的實施形態，雖然作成根據馬達的轉動 量而檢測尖女而轴有沒有轉動’但是若轉動的情況之馬達的 轉動量比尖轴不轉動的情況多，在將馬達的轉速保持定 7〇42-l〇〇91-PF;Ahddub 16 200936323 間，亦轉動的情況 達的轉速波動混亂 ，只要進行馬達的 的時間之結果而判 值的情況，# —次揸擊至下次撞擊㈣ 比尖端軸6不轉動的情況長。又，在馬 的情況，撞擊間的時間亦不固定。因此 定速控制，亦可根據測量前後之撞擊間 第圖係說明在本發明之變更例的動作控制之流程 圖，本撞擊驅動器不是根據尖端轴是轉動（轉動㈣不是 ❹〇)或未轉動（轉動量Θ S G)之2階段判斷，而是將尖端轴 之轉動量Θ分割成複數個階段（例如〇、〇〜0 ；!、0 2〜0 3、 Θ6之5階段），並對應於該轉動量而使馬達的 轉速從最適合木螺絲之轉速（N2)分段地降低至版、咖、 版，並設定最適合螺栓之轉速⑽，係說明在作成一面監 視尖端轴的轉動量-面控制馬達之轉動的情況之馬達的控 制。進打扳機桿之拉操作’而使扳機開關變成動作時(步驟 ST101)’控制部使馬達以最適合鎖入木螺絲之轉速轉動 ® (步驟ST102)。控制部判斷尖端轴的轉動量0是否是零（步 驟ST103)。若尖端軸的轉動量0是零，則判斷為是鎖入螺 栓而不是木螺絲，至步驟ST1〇4,至扳機開關變成不動作 為止執行將馬達的轉速變更成最適合鎖入螺栓之轉速W 的作業（步驟ST105)。 若尖端軸的轉動量Θ不是零，則判斷轉動量0。若比 Θ 6大，則繼續以轉速N2轉動（步驟ST106)，若比0 6小， 則將轉速降低至N2a(步驟ST107)，若轉動量0係0 4〜0 5 ’則執行轉速N2a(步驟ST108)，若轉動量Θ比0 4小， 7042-10091-pf；Ahddub 17 200936323 . 則降低至N2b(步驟ST109)，若轉動量0係02〜03，則執 行轉速N2b(步驟ST110)，若轉動量θ比Θ2小，則降低至 轉速N2c(步驟ST111)，若轉動量θ係〇〜01，則執行轉速 N2c，若轉動量0比〇小（步驟ST112)，則移至步驟ST104， 並變更為轉速N1，執行作業至扳機開關變成不動作。 藉此，使馬達以最適合鎖入木螺絲之轉逮轉動，並可 因應於尖端轴的轉動量，自動地應付係木螺絲或螺检、被 鎖入材料係軟或硬、鎖入係淺或深等各種的條件，而可實 現作業效率優異之撞擊驅動器。 此外，在上述的變更例，雖然說明將尖端軸的轉動量- 'Click X to change the sway, 1 and turn (step ST5). Then, continue until the trigger is opened and the crying does not work. The rotation speed of the bolt is set to 4). Thus, if the motor 2 is set to be suitable for rotation, the rotation of the motor 2 fluctuates as shown in Fig. 3(b). The control unit 16 is configured to determine the rotation of the tip end shaft 6 in rotation, and to make the motor rotation speed (first motor speed) most suitable for the lock bolt (the first fixed tip shaft 6 is not rotated). The motor of the motor ❹ 适合 suitable for the lock bolt is rotated. Therefore, when the locker is screwed, the lock can be rotated with the best lock of the wood screw, and the lock operation can be performed at a high speed, and the lock performance is improved. However, although the defect is long and thick, the same is true for the case where the bolt is inserted into the bolt. However, in the case where the wood screw is 9 or the lock is too hard, the rotation detecting unit 15 detects it. The fluctuation of the rotation speed may become uneven as shown in Fig. 3(c). In this case, as shown in Fig. 5, the start of the impact, the rotation of the 6th force/the thrust point axis~, (step ST2) When it is judged that the rotation speed Na of the tip axis is near zero, the radius of the rotation is determined (step ST3), and the fluctuation of the number of revolutions by the "speed detecting portion 15" is uniform and stable (step ST6), and is utilized at (10) The control unit 16 lowers the number of revolutions of the motor (step ST7). Rander returns to step ST6 to determine the horse. 2Whether the fluctuation of the speed is uniform and stable ^: When the time is even, the speed of the motor 2 is lowered. According to this side, the fluctuation becomes stable. The rotation speed of the king turns into a disorder, and the fluctuation of the speed becomes uneven, unstable, , 广' can also use the following structure 'memorize the memory 17 in advance for 'in addition to the unstable speed fluctuations of the rotation & Ν 1' (suitable for the speed of the lock bolt near it), as shown in Figure 6, in the steps ST6 uses the speed detection 7〇42-l〇〇91-PF; Ahddub 14 200936323 part 15 determines the speed of the motor 2, the logic fluctuation is not uniform and stable, when the speed fluctuation is unstable, immediately from the body of the body 1 7 read out, and reduce the rotation speed of the motor 2 to the rotation speed N1, ., the rotation τ of the operation 2, according to the relationship between the rotation speed and the impact force of the motor 2, the motor 2 shown in Fig. 7 At the time of the event, the higher the rotational speed of the wire 2 and the motor of the motor 2, the greater the impact force becomes, and the performance of the lock screw is also improved. It is necessary to lock the wood screw in a short time in a short time, as long as the motor is increased. The speed of 2 can be. The right speed of the right (the most suitable motor for wood bolts) Speed) is set to N2, too screw field> The rammed wood snail, the smashing area used for smashing, as shown in Fig. 7, is located in the higher transfer area. That is, when the wood screw is locked, because The operating energy of the hammer 5 is consumed by the screw torque (four) (rotation angle), so the repulsive force to the hammer 5 is small. Therefore, when the Νq is hit by the rotational speed Ν 2, the impact is hard to become abnormal. However, when the H has a lock bolt The bolt is almost motionless, because the kinetic energy of the key 5 is returned to the 趟5 as it is, so the 趟5 uses the reaction to exceed the movable range' and strikes the constituent elements. Similarly, depending on the size of the wood screw or the softness of the lock object. Speed fluctuations can also become unstable. As shown in Fig. 8, according to the relationship of the lock screws, the area where the impact becomes unstable is overlapped with the area suitable for the locking of the wood screws. Therefore, in the impact driver, the rotation speed of the wood screw is basically set to be highly efficiently locked, and when the bolt is rotated or the impact is poor, the rotation speed ν1 (νγ) suitable for the lock bolt or the stable impact is moved. . In this way, by setting in accordance with the rotation state of the tip shaft 6, it is possible to cope with the use state other than the lock screw. As shown above, the control unit 16 is configured to turn the motor most suitable for the lock bolt to 7〇42-l〇〇91-PF when determining that the fluctuation period is uniform and the tip shaft 6 is rotated; Ahddub 15 200936323 Rotate, and it is determined that the fluctuation period is hooked, and the motor speed of the tip sleeve 6 is not turned by the rotation of the bolt. When the fluctuation unevenness sentence is detected, it is reduced to a positive speed and a speed as needed. Therefore, when the wood screw is locked, it can be hit with the best ^=, and can be locked at a high speed, and the σ is high.仃Lock into the 胄 胄 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木 木Rotate or rotate at the motor speed of the wave-cycle. Therefore, when the bolt is locked, since the number of revolutions of 2 is lowered to the optimum range, the constituent elements that collide with the inside beyond the normal operating range are not generated, or the impact exceeding the strength is applied to impair the durability. Further, the rotation speed of the motor 2 fluctuates unevenly and becomes a collision; in the case of a defective state, since the motor rotation speed which can be normally hit is lowered, the collision failure state is automatically corrected to the normal impact state. In this way, the setting or adjustment of the operator is not required, and the optimal slamming setting is required for each of the locking objects = the line, because the impact is applied to the constituent elements, and the impact of the suspension is not continuous, so the durability is ensured and Small but able to lock wood screws at high speed. And because of the rotation speed detecting unit that detects the rotation speed of the motor 2! (5) It is determined whether or not the tip shaft 6 is rotated. Therefore, it is not necessary to consider changes in the voltage of the battery or the characteristics of the motor. Further, in the above-described embodiment, it is determined whether or not the shaft is rotated according to the amount of rotation of the motor. However, if the amount of rotation of the motor is greater than that of the sharp shaft when the rotation is performed, the rotation speed of the motor is maintained. Between 7〇42-l〇〇91-PF; Ahddub 16 200936323, the rotation speed is also turbulent, as long as the result of the motor's time is judged, # 揸 至 to the next impact (4) Longer than the tip shaft 6 does not rotate. Also, in the case of horses, the time between impacts is not fixed. Therefore, the constant speed control may also be based on the flow chart of the operation of the modified example of the present invention according to the diagram between the impacts before and after the measurement. The impact driver is not rotated according to the tip axis (rotation (four) is not ❹〇) or not rotating ( The rotation amount Θ SG) is judged in two stages, but the rotation amount 尖端 of the tip axis is divided into a plurality of stages (for example, 〇, 〇~0; !, 0 2 to 0 3, Θ6, 5 stages), and corresponds to the The rotation amount is used to reduce the rotation speed of the motor from the speed (N2) which is most suitable for the wood screw to the plate, the coffee, and the plate, and set the rotation speed (10) which is most suitable for the bolt, which means that the rotation amount of the tip shaft is monitored on the one side. Control of the motor that controls the rotation of the motor. When the trigger lever pull operation is performed to cause the trigger switch to operate (step ST101), the control unit rotates the motor at the rotation speed at which the wood screw is most suitable for locking (step ST102). The control unit judges whether or not the amount of rotation 0 of the tip shaft is zero (step ST103). If the rotation amount 0 of the tip shaft is zero, it is determined that the bolt is locked instead of the wood screw, and the step ST1〇4 is performed until the trigger switch becomes inoperative to change the rotation speed of the motor to the rotation speed most suitable for locking the bolt W. The homework (step ST105). If the amount of rotation of the tip shaft is not zero, the amount of rotation is judged to be zero. If it is larger than Θ6, it continues to rotate at the rotation speed N2 (step ST106). If it is smaller than 0 6, the rotation speed is reduced to N2a (step ST107), and if the rotation amount 0 is 0 4 to 0 5 ', the rotation speed N2a is executed ( Step ST108), if the rotation amount Θ is smaller than 0 4, 7042-10091-pf; Ahddub 17 200936323 . Then, it is lowered to N2b (step ST109), and if the rotation amount 0 is 02 to 03, the rotation speed N2b is executed (step ST110), When the amount of rotation θ is smaller than Θ2, the rotation speed is reduced to the rotation speed N2c (step ST111). If the rotation amount θ is 〇~01, the rotation speed N2c is executed, and if the rotation amount 0 is smaller than 〇 (step ST112), the process proceeds to step ST104. It is changed to the speed N1, and the job is executed until the trigger switch becomes inoperative. Thereby, the motor is rotated in the most suitable manner for locking the wood screw, and can automatically respond to the wood screw or thread check according to the rotation amount of the tip shaft, and the locked material is soft or hard, and the lock is shallow. Or a variety of conditions, such as a deep impact drive. Further, in the above-described modification, the amount of rotation of the tip shaft is described.
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7042-10091-PF;Ahddub 18 200936323 . 切換開關，藉由切換此切換開關，而可自由地選擇馬達的 轉速。而且’和上述之撞擊驅動器一樣，作成監視尖端軸 的轉動量’並因應於該轉動量而判斷鎖入元件係木螺絲或 螺栓，而控制轉速即可。 根據此切換開關所選擇之馬達的轉速，亦可作成預先 設定例如高轉速、中轉速以及低轉速等各種的轉速，不管 鎖入元件係木螺絲或螺栓，而作業員可判斷各種選擇，例 如在想提高作業速度的情況，即使噪音變大亦提高馬達的 轉速’而在使作業環境不產生噪音的情況，降低馬達的轉 速’以免噪音變大，在鎖入小螺絲時，為了避免發生螺絲 頭飛了、螺絲斷了而選擇更低的轉速等。 雖然參照特定之典型的實施例和變更例而說明本發 明’但是在不超出本發明之精神和範圍内可施加各種的變 更或修正’這對本專業者係顯然的。 本專利申請係根據2007年11月i日所申請的日本專 ❿利申請（特願2007— 285359)，在此取入其内容，作為參考。 【工業上之可應用性】 本發明可應用於用以鎖緊木螺絲或螺栓等之撞擊驅動 器。 【圖式簡單說明】 第1圖係本發明之典型的實施例之撞擊驅動器的主要 部分之剖面圖。 7042-10〇91-PF;Ahddub 19 200936323 第2圖係該揸擊驅動器之 ^ r X 電路的方塊圖。 第3(a)圖係表示鎖入木 圖，第3〔h)®I技主- μ 、’、夺之馬達的轉動狀態之 園弟μ㈨圖係表不鎖入螺给 篦竹㈧圖孫志-于之馬達的轉動狀態之圖， 第3(C)圖係表不馬達之轉動 间 +艮狀態的圖。 第4圖係表示該撞擊驅 检c 器之動作控制的流程圖。 第5圖係表示該撞擊驅 動盗之動作控制的變形例之流 程圖。 ❹ 第6圖係表示該撞擊驅動器的動作控 例之流程圖。 .工 制之另外的變形 第7圖係表示鎖入太艘^^ μ & 不螺絲的情況之馬達的轉速和撞擊 力之關係圖。 第8圖係表示鎖入太艘级从在g 土 +螺絲的情況之馬達的轉速和撞擊 力之關係圖。 第9圖係表示該撞擊驅動器之動作控制的變形例之流 程圖。 鲁 第10圖係表示該搜擊驅動器的動作控制之另外的變 形例之流程圖。 2〜馬達； 15~轉速檢測部； 17〜記憶體。 【主要元件符號說明】 1〜工具本體； 6〜尖端軸； 16〜控制部； 7〇42-l〇〇91-PF;Ahddub 207042-10091-PF; Ahddub 18 200936323 . The switch can freely select the speed of the motor by switching the switch. Further, 'the same as the above-described impact driver, the amount of rotation of the tip shaft is monitored', and it is determined by the amount of the rotation that the lock element is attached to the wood screw or the bolt to control the rotation speed. According to the rotation speed of the motor selected by the changeover switch, various rotation speeds such as a high rotation speed, a medium rotation speed, and a low rotation speed can be set in advance, and the operator can judge various options regardless of whether the lock component is a wood screw or a bolt, for example, If you want to increase the speed of the work, even if the noise is increased, the motor's rotation speed is increased, and if the work environment does not generate noise, the motor's rotation speed is reduced to prevent the noise from becoming large. When the small screw is locked, the screw head is avoided. Flying, the screw is broken and the lower speed is selected. It will be apparent to those skilled in the art that the present invention may be practiced without departing from the spirit and scope of the invention. This patent application is based on a Japanese patent application filed on November 1, 2007 (Japanese Patent Application No. 2007-285359), the content of which is incorporated herein by reference. [Industrial Applicability] The present invention can be applied to an impact driver for locking wood screws or bolts and the like. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing the main part of an impact driver of a typical embodiment of the present invention. 7042-10〇91-PF; Ahddub 19 200936323 Figure 2 is a block diagram of the ^ r X circuit of the sniper driver. Fig. 3(a) shows the lock of the wooden figure, the 3rd [h)®I master-μ, ', and the rotation state of the motor of the motor, the μ (nine) map is not locked into the screw to the bamboo (eight) Tu Sun Figure 3 shows the state of rotation of the motor, and the 3rd (C) diagram shows the state of the rotation between the motor and the state of the 艮. Fig. 4 is a flow chart showing the action control of the impact drive c. Fig. 5 is a flow chart showing a modification of the action control of the impact drive. ❹ Fig. 6 is a flow chart showing an example of the operation of the impact driver. Additional Variations of the Workmanship Figure 7 is a graph showing the relationship between the rotational speed and the impact force of a motor that is locked into a too large ^^ μ & Fig. 8 is a graph showing the relationship between the rotational speed and the impact force of the motor locked in the condition of the g-soil + screw. Fig. 9 is a flow chart showing a modification of the operation control of the impact driver. Lu 10 is a flow chart showing another variation of the motion control of the search drive. 2 ~ motor; 15 ~ speed detection unit; 17 ~ memory. [Main component symbol description] 1~tool body; 6~tip axis; 16~control unit; 7〇42-l〇〇91-PF; Ahddub 20