201016411 九、發明說明： 【發明所屬之技術領域】 广梦^ ^係有關於動力I具，尤指—種具有可滑動的儲 存裝置以選擇性提供工具頭的動力工具。 動勺储 【先前技術】 之檔 作 位1 二旋t式動力工具係可藉由手動變換減速機構V t’而相足以作業之轉速與相對之扭力，俾提供多^ j及相對扭力，㈣行_、、變速及雙向轉動等動 習知動力工具存在著不同規袼的工具頭的存、取及安 裝都很不方便。不僅如此，f知動紅具要鎖緊工具頭時， 必須用手抓住前端的夾頭關其轉動，再扣壓扳機.來進行 夾緊，鬆開工具頭的動作。而以手握持夾頭時容易磨手， 造成受傷非常不安全。對於上述問題，亟有待改良之必要。 因此，本發明想排除或至少減輕先前技術所遭遇 題。 【發明内容】 本發明所欲解決之技術問題在於針對現有技術存在的 上述缺失，提供一種具有可滑動儲存裝置的動力工具。 本發明的主要目的在於，本發明儲存裝置能夠在更換 工具頭的第一位置及收合的第二位置間移動，於第一位置 時，工具儲存槽與夾頭裝置相連通，於第二位置時，儲存 201016411 槽内的工具頭受到擋止。 u的另—目的在於’鋪緊裝置可自動扣緊夹頭 裝置，/、侧用·件的力量使鎖環與麵裝置扣人，避 免直接以手握持夾頭裝置 、十、射其、伽和本㈣輯穎触射^下詳細描 述與相關的附圖更加顯明。 ❹ ❿ 【實施方式】 有關本發明所採用之技術、手段及其功效，兹舉-較 佳實施例並配合圖式詳述如後，此僅供朗之用，在專利 申睛上並不受此種結構之限制。 立明，照圖一及圖二，為本發明之立體外觀圖及内部示 思圖，本發明包括有-殼體1G、—驅動裝置2G、—夹頭裝 置30、一儲存裝置40及一鬆腎奘 m ^ 装緊裳置5〇,驅動裝置20裝設 用以提供動力。失頭裝置3〇設祕 ==，並與該驅動裝置2。連結，儲存農置4〇則滑設 於设體1G以選擇性提供工具頭至夹頭裝置3〇。 ★請參照圖三至圖五，殼體10係形成-前後向的容置 工間11，殼體1。的一側延伸有一相部… 容置空間11相連通，且柄部丨 ^ L W丨U叹有—扳機121，以操作 動力工八，殼體10的後端設—與容置空間u相連通之穿 ，13，且該殼體1G的後魅向還設—滑槽14，滑槽Μ :沿殼體1〇表面開設’且滑槽14不開通至另一表面而形 成一擔面141 ’滑槽14 f 1古 ra , Α 更具有—限位部142,殼體10後表 201016411 =相反於滑槽14的兩側各設-開孔15，殼體1G前端相 對的兩側各形成一缺口 16。 驅動包括有—馬達2卜—傳動軸22及一與馬 嵌接的仃星齒輪23，傳動軸22結合於行星齒輪23 割ι/焉達21之一側’馬達轴211 一端設於殼體10的穿 —端則延伸—與行星齒輪23錢的太陽齒212， 輪23係控制馬達21輸出至傳動轴 22的轉速，傳動 再、袭二反Γ馬達21之一端連接—扭力調節環52之輸入端 ^25 ^^ 52 25 ^ 失碩裝置30。驅動裝置20具有一貫通馬遠 =動㈣、25及行星齒輪23底盤的空心轴二空心 3〇。糸由後端之穿孔13貫通至傳動轴25前端的夾頭裝置 夾頭虞置30係襄設於殼體1〇前端，用以爽持不同的 工具頭43 ’失頭裝置3〇係具有 套31不轉動時，操作驅動裳置20旋轉時，便合喪緊 或放鬆工具頭43。夾頭裝置3〇的外套 ； :端外環面設有三切32，轉切32義面各^成一 ^斜面33，第—斜面33係形成於夾縣置30鎖緊方向 配合的接觸面。 ’、 儲存裝置40係滑設於殼體1〇後端的滑槽14，儲存裝 =〇包括有-滑蓋4i及-枢設於該滑蓋41的储存⑼， /月盍41相對於滑槽14設-滑動部411，供滑蓋μ滑設於 201016411 滑槽14，滑蓋41向下滑移可受擋面141擋止，滑蓋41並 可受限位部142限位於滑槽14内，滑蓋41中心設一樞孔 412，樞孔412周圍則設一環狀排列的榫溝413，滑蓋41 相對於滑槽14的徑向設一通孔414，且滑蓋41滑設於殼 體10的過程中，通孔414可對準穿孔13。 儲存匣42係樞設於滑蓋41的樞孔412,儲存£ 42幸由 向延伸一與樞孔412樞接的樞部421，樞部421周圍相對 於榫溝413設一環狀排列的卡榫422，储存匣42前端環設 有數軸向延伸的儲存槽423，這些儲存槽423内分別容納 工具頭43，這些工具頭43係藉由滑蓋41的阻擋而.不致掉 落，僅有對準滑蓋41通孔414的工具頭43能夠通過滑蓋 41的通孔414，而且這些儲存槽423與通孔414位於同一 環面上’故可以旋轉儲存匣42使不同的儲存槽423對準穿 孔13，而卡榫422則配合各儲存槽423的位置設置，且卡 榫422及榫溝413具有彈性能夠一格一格的轉動，所以每 轉動-個卡榫422位置會使不同的儲存槽423對通孔 414。儲存匣42周側相對於這些儲存槽423設有透視孔， =使用者觀看儲存!£ 42内的工具頭43。儲存g 42外側 還能夠設有編號，以利使用者辨識選用的工具頭。 /月蓋41與殼體1〇之間還設一定位裝置从，使滑芸 41可定位於所需位置，定位裝置44係採用設於殼體1〇 = ，15上的-鋼珠441及一彈簧442，而滑蓋41則相對於 疋^裳置44設兩組不同位置的定位孔416、417，供滑蓋. 41定位於兩個不同的位置上，供儲存襄置4〇可在通孔似 201016411 /、穿孔13相連通的第一位置及通孔414與穿孔13不相連 通的第二位置間移動。 ❹ 拳々緊裝置50係裝設於殼體10前端及夾頭裝置3〇之 間，以提供一固定夾頭裝置30的功能，防止夾頭裝置汕 方疋轉。鬆緊裝置5〇包括一固定夾頭裝置3〇外套31的鎖環 一彈性件53及兩可扣住鎖環51的扣件54，鎖環^ 係设於殼體1G的前端，鎖環51外周具有-凸緣511，以 後推時凸緣511自動卡人扣件54 ^位，扭力調 P。衣=於鎖環51内部，扭力調節環52内部的調節機構 圖中未示）_以調節驅練置20的輸出扭矩的相對大 ^值’能讓電鑽在達到—定的扭矩輸出時產生打滑現象以 呆=工具頭43及工作件。彈性件53係設於鎖環51及扭力 調節環52之間，鎖環51相對於彈性件53設一容槽512， :扭力調節環52則設—擔緣521，以將鎖環51推曰向夹頭 &置30。鎖環51相對於夾頭裝置3〇的内緣設— 〇 及第一斜面33配合的卡部513及第二斜面514。扣^4 以-樞轴541及-彈簧542才區設於缺口 16 2 供扣件54保持在扣合狀態。 "542 ^ 月多…、圖/、至圖八’為本發明之動作圖，表示儲存裝 置40能夠在更換工具頭43的第-位置及收合的第二位置 =動於第位置時，滑蓋41的通孔414對準殼體1〇 /牙孔13，以使儲存裝置4〇的能夠提供工具頭“至夾頭 裝置30，於第二位置時，儲存裝置4〇不會提供工具頭 至°亥爽頭褒置3G，滑蓋41的中心的樞孔412對準殼體1〇 10 201016411 的穿孔13，使儲存裝置4〇呈收合狀態與殼體ι〇密合 進行操作的作業，使用者欲使用動力工具時 置40下拉移動至第—位置，並轉動儲存昆犯至所 頭43的儲存槽423對準通孔414，並動 ς 斜，使工具頭43滑至夹頭F $ /、向下傾 往上推移至第-你罢, 再將储存裝置40 在上推移至第—位置即可進行作業。工具頭 ❹ 13經驅動裝置2G至夾頭裝置3〇係在同-轴向的^^孔 以增加動力工具的精度及穩定度。 戍上， 請參照圖九至圖十四:為:發明之 平常鎖環51係受到扣件54的爽扣而不 = 觸’當使用者夾緊或放麥i 士 、置30接 严1德m I, 頭3時’係按壓扣件54放 開鎖衣51，鎖壤51受到彈性 一 3"…時卡部513及卡=夹= 面514與第-斜面33相接，使失 = Μ的卡合料_。欲使夾頭裝置3Q迫緊 :厂錄機121使爽頭裝置30内的夹爪丄 ，述結構，使用者不需要直接以手握=，錯 =操作的細。不僅如此，夾頭裝置30迫緊=; I面33及第二斜面514給予鎖環 移的^ :果，扭矩過大時，推移的力量克服彈==力 日守，夾頭裝罟qn拖把蚀與η 丨的彈力 ,峭戒置30推抵鎖壞51向後’此時夾 受到鎖環51的·貞裝置30不再 不讓夾頭裝置3G懸太ί 再迫緊卫具頭43，藉此 π衣罝dU鎖的太緊，以保護夹 43。需要更換鑽頭時反復以上動 呈 工具頭 上動作，工具碩43鬆開後將工 201016411 具向後傾斜讓工具頭43落回原儲存槽似内。 本發料有以下之優點： 儲存存裝置的動力工具」，其4 間移動，於第-位置時 二位置時，儲存槽内的工具頭受到f連通，於第 2.本發明之「具有可滑動儲存裝置 =緊装置可自動扣緊夹頭裝置，其係利用彈‘201016411 IX. Description of the invention: [Technical field to which the invention pertains] Guangmeng ^^ is a power tool, especially a power tool having a slidable storage device to selectively provide a tool head. Moving spoon storage [Prior Art] Gear position 1 The two-rotation t-type power tool can provide sufficient speed and relative torque by manually changing the speed-reduction mechanism V t ', and provide more torque and relative torque. (4) It is inconvenient to store, take and install tool heads with different specifications, such as line _, speed change and two-way rotation. Not only that, when you want to lock the tool head, you must hold the front end of the chuck to close the rotation, and then press the trigger to clamp and release the tool head. It is easy to grind your hands when holding the chuck, which makes the injury very unsafe. For the above problems, there is a need for improvement. Accordingly, the present invention is intended to obviate or at least alleviate the problems encountered in the prior art. SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide a power tool having a slidable storage device in view of the above-mentioned deficiencies of the prior art. The main object of the present invention is to enable the storage device of the present invention to move between a first position of the replacement tool head and a second position of the retraction. In the first position, the tool storage slot communicates with the collet device in the second position. When storing the tool head in the 201016411 slot, it is blocked. The other purpose of u is that the 'sanding device can automatically fasten the chuck device, and the force of the side parts can make the lock ring and the surface device buckle, avoiding holding the chuck device directly by hand, ten, shooting it, The detailed description of the gamma and the book (4) and the related drawings are more obvious.实施 ❿ 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施 实施The limitations of this structure. Li Ming, according to Figure 1 and Figure 2, is a perspective view and an internal view of the present invention. The present invention comprises a housing 1G, a driving device 2G, a chuck device 30, a storage device 40 and a pine. The renal pelvis m ^ is placed at 5 装 and the drive unit 20 is installed to provide power. The head loss device 3 is set to secret == and is associated with the drive unit 2. Connected, stored in the farm, then slides on the body 1G to selectively provide the tool head to the chuck device 3〇. ★ Referring to Figures 3 to 5, the housing 10 is formed with a front-rear housing 11 and a housing 1. One side of the extending portion has a phase portion... The accommodating space 11 is in communication, and the shank portion L L L L 叹 — 扳 扳 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 121 The wearer is 13 and the rear enchantment of the casing 1G is further provided with a chute 14 which is opened along the surface of the casing 1 and the chute 14 is not opened to the other surface to form a shoulder surface 141 ' The chute 14 f 1 ancient ra , Α has a - limiting portion 142, the rear view of the casing 10 is 201016411 = opposite to the two sides of the chute 14 - an opening 15 is formed, and the opposite sides of the front end of the housing 1G are formed Notch 16. The drive includes a motor 2 - a drive shaft 22 and a comet gear 23 engaged with the horse. The drive shaft 22 is coupled to the planetary gear 23. One side of the cutter 21 is disposed at one end of the motor shaft 211. The wear-end extends - the sun gear 212 with the planet gear 23, the wheel 23 controls the speed of the motor 21 output to the drive shaft 22, and the transmission is connected to one end of the second motor 21 - the input of the torque adjustment ring 52 End ^25 ^^ 52 25 ^ Lost device 30. The driving device 20 has a hollow shaft 2 hollow 3〇 which penetrates the horse far=moving (four), 25 and the chassis of the planetary gear 23. The chuck device chuck 30, which is penetrated from the rear end of the through hole 13 to the front end of the drive shaft 25, is disposed at the front end of the casing 1 for holding different tool heads 43 'The head loss device 3 has a sleeve When the 31 is not rotated, when the driving drive is rotated 20, the tool head 43 is loosened or relaxed. The jacket of the collet device 3〇; the outer ring surface of the end is provided with three cuts 32, and the 32-faced surface is turned into a beveled surface 33, and the first inclined surface 33 is formed on the contact surface of the clamped 30-locking direction. The storage device 40 is slidably disposed on the rear end of the casing 1 and includes a sliding cover 4i and a storage (9) pivotally mounted on the sliding cover 41, relative to the chute. 14 is provided with a sliding portion 411 for sliding the sliding cover μ to the chute 14 of the 201016411, the sliding cover 41 is slid downwardly and can be blocked by the blocking surface 141, and the sliding cover 41 and the restricted position portion 142 are limited to the sliding slot 14 A pivot hole 412 is defined in the center of the sliding cover 41. An annular groove 413 is disposed around the pivot hole 412. The sliding cover 41 is provided with a through hole 414 in the radial direction of the sliding slot 14, and the sliding cover 41 is slidably disposed on the shell. Through hole 414 can be aligned with perforation 13 during body 10. The storage port 42 is pivotally disposed on the pivot hole 412 of the sliding cover 41. The storage portion 42 is forcibly extended by a pivot portion 421 pivotally connected to the pivot hole 412. The circular portion of the card portion 421 is disposed around the pivot portion 413. The front end ring of the storage cassette 42 is provided with a plurality of axially extending storage slots 423. The storage slots 423 respectively accommodate the tool heads 43. The tool heads 43 are blocked by the sliding cover 41. The tool head 43 of the through hole 41 of the quasi-sliding cover 41 can pass through the through hole 414 of the sliding cover 41, and the storage grooves 423 and the through hole 414 are located on the same annular surface. Therefore, the storage port 42 can be rotated to align the different storage grooves 423. The perforation 13 is arranged, and the cassette 422 is disposed along the position of each storage slot 423, and the cassette 422 and the groove 413 have elasticity to be rotated one by one, so each position of the rotation - 422 causes different storage slots. 423 pairs of through holes 414. The storage crucible 42 is provided with a see-through hole with respect to the storage tanks 423, and the user views the tool head 43 in the storage! The outside of the storage g 42 can also be numbered for the user to identify the selected tool head. There is also a positioning device between the moon cover 41 and the casing 1 , so that the sliding sill 41 can be positioned at a desired position, and the positioning device 44 is a steel ball 441 and a yoke provided on the casing 1 〇 = , 15 The spring 442, and the sliding cover 41 is provided with two sets of positioning holes 416, 417 at different positions relative to the skirt 44 for the sliding cover 41 to be positioned at two different positions for the storage device 4 The hole is like 201016411, the first position where the perforations 13 are in communication, and the second position where the through holes 414 are not in communication with the perforations 13. The cymbal clasping device 50 is mounted between the front end of the casing 10 and the collet device 3'' to provide a function of the fixed collet device 30 to prevent the collet device from twisting. The elastic device 5 includes a locking ring of the fixed collet device 3, the outer casing 31, and an elastic member 53 and two fasteners 54 for holding the locking ring 51. The locking ring is disposed at the front end of the casing 1G, and the outer periphery of the locking ring 51 With a flange 511, the flange 511 automatically pulls the fastener 54° position and pushes the torque P. Clothing = inside the lock ring 51, the adjustment mechanism inside the torque adjustment ring 52 is not shown) _ to adjust the relative large value of the output torque of the drive 20 can make the electric drill slip when it reaches the constant torque output Phenomenon to stay = tool head 43 and work piece. The elastic member 53 is disposed between the lock ring 51 and the torsion adjusting ring 52. The locking ring 51 is provided with a receiving groove 512 relative to the elastic member 53. The torque adjusting ring 52 is provided with a rim 521 for pushing the locking ring 51. Set 30 to the collet & The lock ring 51 is provided with a locking portion 513 and a second inclined surface 514 which are engaged with the first inclined surface 33 with respect to the inner edge of the chuck device 3A. The buckle ^4 is disposed in the notch 16 2 with the pivot 541 and the spring 542. The fastener 54 is held in the engaged state. " 542 ^ month more ..., Fig. /, to Fig. 8' is an action diagram of the present invention, showing that the storage device 40 can be in the first position of the replacement tool head 43 and the second position of the retraction = the first position The through hole 414 of the sliding cover 41 is aligned with the housing 1/hole 13 so that the storage device 4 can provide the tool head "to the collet device 30. In the second position, the storage device 4 does not provide a tool. 3C, the center pivot hole 412 of the sliding cover 41 is aligned with the through hole 13 of the housing 1〇10 201016411, so that the storage device 4 is folded and engaged with the housing ι. In the operation, when the user wants to use the power tool, the 40 pull-down moves to the first position, and the storage tank 423 that is stored in the head 43 is aligned with the through hole 414, and is tilted to slide the tool head 43 to the chuck. F $ /, tilt down and go up to the first - you can then work on the storage device 40 up to the first position. The tool head ❹ 13 is driven by the drive device 2G to the chuck device 3 - Axial hole ^^ to increase the accuracy and stability of the power tool. On the ,, please refer to Figure 9 to Figure 14: for the invention The permanent lock ring 51 is subjected to the quick release of the fastener 54 without being touched. 'When the user clamps or puts the wheat, the 30 is tightened 1 d m I, and the head 3 'presses the fastener 54 to release the lock 51 The lock soil 51 is subjected to the elastic one 3"...the time card portion 513 and the card=clip=face 514 are in contact with the first-slope surface 33, so that the snap-fed material is lost. 欲. To make the chuck device 3Q tight: The machine 121 causes the jaws in the air-cooling device 30 to be squatted, and the user does not need to directly hold the hand =, wrong = the thinness of the operation. Moreover, the chuck device 30 is pressed =; the I face 33 and the second slope 514 gives the lock ring to move ^: If the torque is too large, the force of the push overcomes the bomb == force, the chuck clamps the qn mop and the elastic force of the η 峭, the yoke ring 30 pushes the lock to the bad 51 backwards' When the clip is received by the lock ring 51, the device 30 no longer prevents the chuck device 3G from hanging too much and then tightens the head 43 so that the π 罝 dU lock is too tight to protect the clip 43. The above motion moves on the tool head, and after the tool master 43 is released, the worker 201016411 is tilted backward to make the tool head 43 fall back into the original storage tank. The present invention has the following advantages: "Tool", the four movements, in the second position of the first position, the tool head in the storage tank is subjected to f communication, in the second aspect of the invention, "the slidable storage device = the tight device can automatically fasten the chuck device , the system uses the bomb '
使裝置扣合，避免直接以手握 日狀「具衬滑動儲純置_紅具」，1中 ΐ驅動裝置具有貫通前後端的空心軸，以作紅且頭= 二二亥:存裝置、該驅動裝置及該夹頭裝置係位於同- °的直線上’以確保動力工具的精度及穩定。To fasten the device, avoid directly holding the day-like "lined sliding storage pure red_red", and the 1 middle driving device has a hollow shaft that passes through the front and rear ends to make a red and head = two two sea: storage device, the The drive unit and the chuck unit are located on the same line as - ° to ensure the accuracy and stability of the power tool.
惟上所述者，僅為本發明之較佳實施例而已，者不处 之限縣發財施之_，故舉凡數值之變更或^效元匕 之置換，或依本發明申料職_作之解變化 飾，皆應仍屬本發明專利涵蓋之範疇。 /、> 【圖式簡單說明】 圖一為本發明動力工具的立體外觀圖。 圖二為本發明動力工具的立體分解圖。 圖三為本發明動力工具的立體分解圖。 =四為圖三的延續’表示另—視角的立體分解圖。 圖五為圖一沿5-5剖面線所取之剖面圖。 12 201016411 圖六為本發明的動作圖，表示儲存裝置能在第一位置及第 二位置間移動，且儲存匣可轉動。 圖七為圖六沿7-7剖面線所取之剖面圖。 圖八為本發明的動作圖，表示動力工具向下傾斜使工具頭 往前滑。 圖九為圖一沿9-9剖面線所取之剖面圖。 圖十為本發明動力工具的局剖放大圖。 圖十一為本發明的動作圖。 ® 圖十二為圖十沿12-12剖面線所取之剖面圖。 圖十三為圖十沿13-13剖面線所取之剖面圖。 圖十四為圖十一沿14-14剖面線所取之剖面圖。 【主要元件符號說明】 10 殼體 11 容置空間 12 柄部 121 扳機 13 穿孔 14 滑槽 141 擋面 142 限位部 15 開孔 16 缺口 20 驅動裝置 21 馬達 211 馬達軸 212 太陽齒 22 傳動軸 23 行星齒輪 24 空心軸 25 傳動軸 30 夾頭裝置 31 外套 32 卡槽 33 第一斜面 13 201016411 40 儲存裝置 41 滑蓋 411 滑動部 412 枢孔 413 榫溝 414 通孔 416 定位孔 417 定位孔 42 儲存匣 421 樞部 422 卡榫 423 儲存槽 43 工具頭 44 定位裝置 441 鋼珠 442 彈簧 50 鬆緊裝置 51 鎖環 511 凸緣 512 容槽 513 卡部 514 第二斜面 52 扭力調節環 521 擋緣 53 彈性件 54 扣件 541 柩軸 542 彈簧However, the above description is only a preferred embodiment of the present invention, and is not limited to the county's financial contribution, so the change of the value or the replacement of the effect, or the application of the invention The solution of the solution should remain within the scope of the invention patent. /, > BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a power tool of the present invention. Figure 2 is an exploded perspective view of the power tool of the present invention. Figure 3 is an exploded perspective view of the power tool of the present invention. = four is a continuation of Figure 3, which represents another perspective view of the perspective. Figure 5 is a cross-sectional view taken along line 5-5 of Figure 1. 12 201016411 Fig. 6 is an action diagram of the present invention, showing that the storage device is movable between the first position and the second position, and the storage port is rotatable. Figure 7 is a cross-sectional view taken along line 7-7 of Figure 6. Figure 8 is an action diagram of the present invention, showing that the power tool is tilted downward to slide the tool head forward. Figure 9 is a cross-sectional view taken along line 9-9 of Figure 1. Figure 10 is a partially enlarged cross-sectional view of the power tool of the present invention. Figure 11 is an action diagram of the present invention. ® Figure 12 is a cross-sectional view taken along line 12-12 of Figure 10. Figure 13 is a cross-sectional view taken along line 13-13 of Figure 10. Figure 14 is a cross-sectional view taken along line 14-14 of Figure 11. [Description of main components] 10 Housing 11 accommodating space 12 shank 121 Trigger 13 Perforation 14 Chute 141 Stop surface 142 Limiting portion 15 Opening 16 Notch 20 Drive 21 Motor 211 Motor shaft 212 Sun gear 22 Drive shaft 23 Planetary gear 24 Hollow shaft 25 Drive shaft 30 Chuck device 31 Jacket 32 Card slot 33 First ramp 13 201016411 40 Storage device 41 Slide 411 Slide 412 Pivot hole 413 Groove 414 Through hole 416 Positioning hole 417 Positioning hole 42 Storage 匣421 421 422 榫 423 storage slot 43 tool head 44 positioning device 441 steel ball 442 spring 50 elastic device 51 lock ring 511 flange 512 groove 513 card portion 514 second slope 52 torque adjustment ring 521 retaining edge 53 elastic member 54 buckle Pieces 541 柩 shaft 542 spring