200846570 九、發明說明： 【發明所屬之技術領域】 ’尤指一種切線外 本發明係為-種外循環式滾珠螺桿 循壞式滾珠螺桿。 【先前技術】 、現7的/袞珠螺桿於工業方面之應用愈來愈多，除了作 φ為線性進給傳動的高精密度效果之外，其他更有摩擦耗損 率小、能量轉換率高“喿音小及高剛度不易損壞等優點， 因此’滾珠螺桿對於現今各歡業應職具等重要性也不 言可喻。 承上，由於要讓螺帽可無限次的在螺桿上往復運動， 就必須設有迴流裝置始滾動體可無限次循環於滾動溝槽 中，而習知主張迴流裝置設計如：美國專利US3661〇3()等 案，然，該迴流裝置之迴流路徑都會有彎曲處，當滚動體 在回速運行的情況下，不斷的衝擊指曱及迴流路徑之彎曲 處（撞擊處），使得指甲及該撞擊處之強度漸漸減弱，進 而使滾動體間夾雜因撞擊所剝落的迴流元件之殘骸，而引 響滚動體循環之順暢性，故迴流裝置的破壞是滾珠螺桿相 S苇見的失效狀況之一。 5 200846570 於是，目前業界為解決前述之問題，所提出的解決 方法將彎管由切線方向插入螺紋執道之設計，如： 美國專利US3971264迴流裝置的設計方式，是以多 . 截式彎管組合而成，其彎管因為組合式故其結構較不穩· v 固；而且該螺帽之管孔方向同為導程角方向，故該管孔 加工時需用到多軸加工機旋轉螺帽位置，方可加工至需 要孔位，故此項的加工難度會較高。以及； _ 美國專利US4953419迴流裝置其彎管係設有兩彎曲 之導引道，故該彎曲部份於製造上之尺寸較難以控制；另 該螺帽之管孔加工方式之問題點與上述專利相同；且該迴 流裝置之固定方式，藉由螺帽外徑上之固定片將其固定， 其固定方式較為不穩固，並且增加螺帽外徑尺寸。以及； 美國專利US2003/0213323該迴流裝置係藉由多塊元 件組合的方式所構成，需多種模具來應映元件需求，故造 φ 成了模具設計成本提高，且該迴流裝置以組合方式之設計 其裝配時間也增加；且當迴流裝置所需元件變多時，則該 迴流裝置内部滾動件於高速運動時，容易造成元件之間的 " 振動，進而產生不明的噪音。 - 另外，以上三種習知切線外循迴流裝置係有一共通的 問題點，於迴流裝置安裝於螺帽上時不易對位，且於填裝 滾動件之步驟時，其滾動件易掉落。 200846570 【發明内容】 基於上述習知連結器之問題點，本發明人經過研究改 良後，終有確能達成以下發明之目的之發明誕生。 • 即，本發明首要目的在於，使螺帽之管孔加工容易， . 不需使用特殊機械（例如：多軸加工機等機械）即可加工； 另使迴流裝置利於生產製造。 本發明次要目的在於，迴流裝置組裝於螺帽時容易對 ⑩ 位，且易於裝填滾動件，以縮短裝配時間。 本發明再一目的在於，將迴流裝置確實牢固地，固定 於螺帽上，以維持滾動件循環的順暢度。 為達上述之目的，本發明之外循環式滾珠螺桿，其中 該螺帽係為一中空結構，其内緣設有滾動槽，並套設於外 緣設有相對該滾動槽之滾動溝的螺桿上，該滚動槽及滾動 溝之間係容置有若干滾動件；另，該螺帽外緣係設有一平 Φ 面及若干通孔，該平面上設有若干安裝孔，該安裝孔係貫 穿該平面，且該安裝孔係設有一擋面；而藉由該平面之設 計，使得加工安裝孔時不須使用多軸加工機即可加工；該 ~ 通孔係供固定件穿設並與該安裝孔相連通； — 又，該螺帽上係裝設供滾動件無限循環之迴流裝置， 其包含引導件及覆蓋件；該引導件係設有鎖固於該螺帽之 安裝孔之導引部，另設有第一半管，該導引部係設有指 7 200846570 曱、導引道及若干螺孔；該覆蓋件係設有蓋設於該導引部 上之固定部及蓋設於第一半管之第二半管，該固定部係設 有供螺絲穿設之穿孔； 呈上所述，該迴流裝置之安裝步驟為： 1·將該引導件之導引部安裝至該安裝孔内，藉由安裝孔 底部之擋面定位作用，及藉由固定件穿設螺帽外表面 之通孔後與導引部之螺孔配合固定，將其定位完成。 _ 2·藉由固定件穿設固定部之穿孔後，與引導件之螺孔配 合固定，進而將該覆蓋件蓋設於引導件上，即完成該 迴流裝置之組裝。 以上，藉由安裝孔與導引部之配合，加上固定件與螺 孔的配合固定，使得迴流裝置可牢固地安裝於螺帽上。 另外，值得一提的是，藉由引導件與該滾動槽及滾動 φ 溝之銜接之設計，使得填裝滾動件時，藉由該引導件之導 引道，--^將滚動件填裝至該滾動槽及滾動溝之間，填裝 完畢將覆蓋件蓋設於引導件上即可，故其可縮短滾動件填 ' 裝時間。該迴流裝置係藉由模具射出方式即可大量生產。 _ 該螺帽之安裝孔的設計，只需使用一般加工機即可加工， 且因平面的設計進而提高安裝孔的加工精度。 8 200846570 為了更進部瞭解本發明之特徵及技術内容，請參閱 以下有關本發明之實施方式說明及圖式，然而此實施方式 及圖式僅供說明及參考用，而非用以對本發明做任何限制 - 者。 、 【實施方式】 本發明之實施例請參閱第一至三圖、第四A、四B、 立A五B、/、A、六B圖及第七至八圖所示，本發明係 • 為一種外循環式滾珠螺桿，係包含 一螺桿1 ’其上係設有滾動溝1 1 ; 一螺帽2，係為中空結構，其内緣係設有相對該滾動 溝1 1之滾動槽2 1 ;其係套設於該螺桿i上並於上作往 復運動；且該螺帽2外緣係設有一平面2 2及若干通孔2 3 ’该平面2 2上設有若干安裝孔2 2 1，該安裝孔2 2 1係貫穿該平面2 2，且該安裝孔2 2 1係設有一擋面2 ⑩ 2 1 1 (如第四B圖所示）；該通孔22係供固定件Θ穿 設並與該安裝孔2 2 1相連通； 若干滾動件R，係容置於該滾動槽2 i及滾動溝工工 ^ 之間； 一迴流裝置9 9，係由一引導件3及一覆蓋件4所組 成； 該引導件3，係設有兩導引部3 1及第一半管3 2 ; 9 200846570 該導引部3 1係設固於該螺帽2之安裝孔2 2 1 内’且該導引部3 1係設有一指甲3 1 2、導引道3 1 3、一銜接孔3 1 5及若干螺孔3 1 1 ;該指甲3 1 2係 朝該螺帽2之滾動槽2 1凸伸且嵌置定位；該導引道3 1 、 3係由該導引部3 1之底面3 1 6向頂面3 1 4延伸設 置，其係為一開放之通道，且該導引道3 1 3係與該滾動 屢1 1及滾動槽2 1之螺旋角的角度平行，並且沿著該滾 ⑩ 動溝1 1及滾動槽2 1之螺紋線的切線方向設置，如此設 計係銳降低滾動件r於運行時對於導引道3 1 3的衝擊 力道，以提高循環的順暢度；該導引道3 i 3 一端係與該 滾動溝1 1及滾動槽2 1銜接，另一端係連接該第一半管 3 2 5該銜接孔3 1 5内係設有一銜接面3 1 5 1 ;該螺 孔3 1 1係設至於該導引部3 1之側面及頂面3 1 4200846570 IX. Description of the invention: [Technical field to which the invention pertains] ‘especially a tangential line The present invention is an extra-circulating type ball screw circulatory ball screw. [Prior Art] The current 7/Zhuzhu screw is used more and more in the industry. In addition to the high precision effect of φ for the linear feed drive, the other has a small friction loss rate and high energy conversion rate. "The sound is small and the rigidity is not easy to be damaged. Therefore, the importance of the 'ball screw' is very important for today's various business applications. Thanks to the nut, the nut can be reciprocated on the screw indefinitely. It is necessary to provide a reflow device to start the rolling body in an infinite number of cycles in the rolling groove. Conventionally, the design of the reflow device is as follows: U.S. Patent No. 3,661, 3 (), etc., however, the return path of the reflow device is curved. Where, when the rolling element is running at a reciprocating speed, the bending point (impact) of the finger and the return path is continuously impacted, so that the strength of the nail and the impact portion is gradually weakened, thereby causing the inclusion between the rolling elements due to the impact. The flank of the reflowing reflow element evokes the smoothness of the rolling element circulation, so the destruction of the reflow device is one of the failure states of the ball screw phase. 5 200846570 So, the industry is currently solving The proposed solution, the proposed solution is to insert the elbow from the tangential direction into the design of the thread, such as: US patent US3971264 reflow device design, is a combination of multiple truncated bends, the bend is because of the combination Therefore, the structure is less stable and v solid; and the direction of the tube hole of the nut is the direction of the lead angle, so the position of the rotating nut of the multi-axis processing machine is required for the tube hole processing, and the hole can be processed to the required hole. Therefore, the processing difficulty of this item is higher. And; _ US Patent US 4943419 reflow device has two curved guide channels for the curved pipe, so the curved portion is difficult to control in manufacturing; the nut The problem of the processing method of the tube hole is the same as the above patent; and the fixing method of the reflow device is fixed by the fixing piece on the outer diameter of the nut, the fixing manner thereof is relatively unstable, and the outer diameter of the nut is increased. And the US Patent US2003/0213323, the reflow device is composed of a plurality of components, and requires a plurality of molds to meet the requirements of the components, so that the manufacturing cost is increased, and the reflow device is installed. In the combined design, the assembly time is also increased; and when the number of components required for the reflow device is increased, the internal rolling elements of the reflow device are likely to cause vibrations between the components at high speeds, thereby generating unclear noise. - In addition, the above three conventional tangential recirculation recirculation devices have a common problem. When the reflow device is mounted on the nut, it is not easy to align, and when the step of filling the rolling member, the rolling member is easy to fall. 200846570 [Summary of the Invention] Based on the above problems of the conventional connector, the inventors have made research and improvement, and finally realized the invention of the object of the following invention. • That is, the primary object of the present invention is to make the tube of the nut Hole processing is easy. It can be processed without using special machinery (for example, machines such as multi-axis machines). The reflow device is also advantageous for manufacturing. A secondary object of the present invention is that the reflow device is easily assembled to the nut at 10 positions and is easy to load the rolling member to shorten the assembly time. Still another object of the present invention is to provide a reflow device that is securely attached to the nut to maintain smoothness of the rolling element cycle. For the above purpose, the outer circulation type ball screw of the present invention, wherein the nut is a hollow structure, the inner edge is provided with a rolling groove, and the outer edge is provided with a screw having a rolling groove relative to the rolling groove. The rolling groove and the rolling groove are provided with a plurality of rolling elements; the outer edge of the nut is provided with a flat Φ surface and a plurality of through holes, and the mounting hole is provided on the plane. Through the plane, the mounting hole is provided with a blocking surface; and by the design of the plane, the machining hole can be processed without using a multi-axis processing machine; the through hole is for the fixing member to be worn and The mounting hole is connected to each other; - further, the nut is provided with a reflow device for the infinite circulation of the rolling member, which comprises a guiding member and a covering member; the guiding member is provided with a guiding hole locked to the mounting hole of the nut The guiding portion is further provided with a first half pipe, and the guiding portion is provided with a finger 7 200846570 曱, a guiding channel and a plurality of screw holes; the covering member is provided with a fixing portion and a cover which are disposed on the guiding portion In the second half of the first half of the tube, the fixing portion is provided for the thread to be worn The mounting step of the reflow device is as follows: 1. Mounting the guiding portion of the guiding member into the mounting hole, positioning by the bottom surface of the mounting hole, and passing through the fixing member After the through hole of the outer surface of the nut is fixed with the screw hole of the guiding portion, the positioning thereof is completed. After the perforation of the fixing portion is passed through the fixing member, the screw hole of the guiding member is fitted and fixed, and the covering member is covered on the guiding member, that is, the assembly of the reflow device is completed. In the above, by the cooperation of the mounting hole and the guiding portion, and the fixing and fixing of the fixing member and the screw hole, the reflow device can be firmly mounted on the nut. In addition, it is worth mentioning that, by the design of the guiding member and the rolling groove and the rolling φ groove, when the rolling element is filled, the rolling piece is filled by the guiding path of the guiding member. It is installed between the rolling groove and the rolling groove, and the cover member can be covered on the guide member after filling, so that the rolling device can be shortened. The reflow device can be mass-produced by means of mold injection. _ The design of the mounting hole of the nut can be processed by using a general processing machine, and the machining accuracy of the mounting hole is improved by the planar design. 8 200846570 For a better understanding of the features and technical contents of the present invention, reference should be made to the following description of the embodiments of the present invention and the drawings. Any restrictions - those. [Embodiment] For the embodiments of the present invention, please refer to the first to third figures, the fourth A, the fourth B, the vertical A five B, the /, the A, the sixth B and the seventh to the eighth, and the present invention is The utility model relates to an outer circulation type ball screw, which comprises a screw 1 ′ on which a rolling groove 1 1 is arranged; a nut 2 is a hollow structure, and an inner edge thereof is provided with a rolling groove 2 opposite to the rolling groove 1 1 . 1; the sleeve is sleeved on the screw i and reciprocated thereon; and the outer edge of the nut 2 is provided with a plane 2 2 and a plurality of through holes 2 3 'the plane 2 2 is provided with a plurality of mounting holes 2 2 The mounting hole 2 2 1 is through the plane 2 2 , and the mounting hole 2 2 1 is provided with a blocking surface 2 10 2 1 1 (as shown in FIG. 4B); the through hole 22 is for fixing parts The Θ is disposed and communicated with the mounting hole 2 2 1 ; a plurality of rolling elements R are disposed between the rolling groove 2 i and the rolling groove ^; a reflow device 9 9 is provided by a guiding member 3 a cover member 4; the guide member 3 is provided with two guiding portions 3 1 and a first half tube 3 2 ; 9 200846570 The guiding portion 3 1 is fastened to the mounting hole 2 2 of the nut 2 1 inside 'and the guiding portion 3 1 is provided a nail 3 1 2, a guiding channel 3 1 3, an engaging hole 3 1 5 and a plurality of screw holes 3 1 1; the nail 3 1 2 is protruded toward the rolling groove 2 1 of the nut 2 and is embedded and positioned; The guiding channels 3 1 and 3 are extended from the bottom surface 3 16 of the guiding portion 3 1 to the top surface 3 1 4 , which is an open channel, and the guiding channel 3 1 3 is connected with the rolling 1 1 and the angle of the helix angle of the rolling groove 2 1 are parallel, and are arranged along the tangential direction of the thread of the roller 10 moving groove 1 1 and the rolling groove 2 1 , so that the design is sharply reduced to reduce the rolling element r during operation. The impact force of the approach channel 3 1 3 is used to improve the smoothness of the cycle; the guide channel 3 i 3 is connected to the rolling groove 11 and the rolling groove 2 1 at one end, and the other end is connected to the first half pipe 3 2 5 An engaging surface 3 1 5 1 is disposed in the connecting hole 3 1 5; the screw hole 31 1 is disposed on the side surface and the top surface of the guiding portion 31
上，該侧面之螺孔3 1 1係與該螺帽2之通孔2 3相對設 • 置； X 第一半管3 2係設於兩導引部3丄之間，其上設有一 第一半流道3 2 1及第一貼合面3 2 2 ;該第一半流道3 2 1係連接該導引部3 1之導引道3 1 3 ; 該覆蓋件4，係蓋設於該引導件3上，其上係設有一 第二半管42及兩固定部41; 200846570 該第二半管4 2係與固定部4 1連接，其係蓋設於該 弟一半管3 2上，其兩端凸設有一延伸部4 2 3 5該延伸 部4 2 3上係設有一延伸面4 2 3 1，該延伸面4 2 3 1 係與該引道件3之銜接面3 1 5貼合；且該第二半管4 2 • 係設有一第二半流道4 2 1及第二貼合面4 2 2 ; 該固定部4 1係蓋設於該頂面3 1 4上，其上係設有 相對該頂面3 1 4之螺孔3 1 1之魚眼孔4 1 1 ; 以上所述為各元件細部說明及其相互搭配關係， 以下說明本實施例之實施方式，請參閱第一至三圖、第 四A、四B、五A、五B、六A、六B圖及第七至八圖所 不， 首先，將該引導件3之導引部3 1裝設至螺帽2之安 裝孔2 2 1内，使該導引部3 1之底面3 1 6與該安裝孔 鲁2 2 1之擋面2 2 1 1貝占合，另，該導引部3 1之側面係 與該安裝孔2 2 1之内緣貼合，以防止異物藉由底面3工 6與擋面2 2 1 1以及侧面與安裝孔2 2 1之内緣之缝 隙入侵螺帽2内部；而後係將固定件G穿設該螺帽2之通 孔2 3後，與導引部3 1之侧面的螺孔3 ；[ 1螺合鎖固， 如此一來，即可將該引導件3安裝完成； 另，值得一提的是，本發明可應用於不出牙之螺桿 11 200846570 1 ;且當該引導件3安裝完成後，即可進行滾動件G的填 裝步驟，填裝完成後再接續迴流裝置9 9之安裝步驟。 再者，該引導件3安裝完成後，將其覆蓋件4蓋設於 ' 其上；其中該固定部4 1係與該導引部3 1之頂面3工4 • 貼合以防止異物藉由之間縫隙入侵迴流裝置g 9内部，且 再由固定件G穿設該魚眼孔4 1 1後與該頂面3 i 4之 螺孔3 1 1螺合鎖固，進而構成一迴流部9 9丄；同時， ⑩該延伸部4 2 3係容置於該銜接孔3 1 5内，且該延伸部 42 3之延伸面4 2 3 1係與該銜接孔3 1 5之銜接面 3 1 5 1貼合（如第三圖所示），以形成一平順之彎道； 同時，該第一半管3 2之第一貼合面3 2 2係與該第二半 管4 2之第二貼合面4 2 2貼合；其第一半管3 2與第二 半管4 2配合後構成一完整的導管g g 2，該導管9 9 2 内係設有由第一半流道3 2 1及第二半流道4 2 1組成 _之迴流道9 9 2 1，該迴流道9 9 2 1係與該迴流部9 9 1之導引道3 1 3銜接，進而形成一完整的迴流路徑。該 迴流路牷與該滾動溝1 1及滾動槽2 1銜接後，進而使滾 動件G可於滚珠螺桿内無限循環。 隶後，為求清楚說明本發明之實施特點，以下說明本 發明較習用進步之處及實用方式： 200846570 1. 螺帽加工容易，使用傳統加工機即可加工。 2. 迴流裝置係藉由模具射出成型，可大量生產。 3. 藉由導引部與安裝孔配合，再藉由固定件穿設螺帽上之 ' 通孔與導引部之螺孔螺合鎖固，達到確實固定的效果， Λ 以防止滾動件循環時產生振動，進而產生噪音。 4. 迴流裝置組裝方便且容易對位，且方便填裝滾動件。 • 綜所上述，本發明之迴流裝置係突破習知的問題點， 進而縮短滚珠螺桿裝配時間，且降低迴流裝置的製造成 本，所以本發明之『具有產業之可利用性』應已毋庸置疑5 除此之外，在本案實施例所揭露出的特徵技術，於申請之 前並未曾見於諸刊物5亦未曾被公開使用5不但具有如上 所述功效增進之事實，更具有不可輕忽的附加功效，是 故，本發明的『新穎性』以及『進步性』都已符合專利法 • 規，爰依法提出發明專利之申請，祈請惠予審查並早曰賜 准專利，實感德便。 以上所述實施例之揭示係用以說明本發明，並非用以 限制本發明，故舉凡數值之變化與等效元件之置換，仍應 隸屬本發明之範疇。 13 200846570 【圖式簡單說明】 第一圖為本發明外循環式滾珠螺桿爆炸圖。 第二圖為本發明外循環式滾珠螺桿組合圖。 第三圖為第二圖A — A剖面圖。 - 第四A圖為本發明螺帽立體圖。 第四B圖為第四A圖X局部放大圖。 第五A圖為本發明引導件立體圖。 • 第五B圖為本發明引導件下視圖。 第六A圖為本發明復盖什JL鹽圃° 第六B圖為本發明覆蓋件下視圖。 第七圖為本發明迴流裝置立體圖。 第八圖為本發明迴流裝置前視圖。The screw hole 3 1 1 of the side surface is opposite to the through hole 2 3 of the nut 2; X the first half pipe 3 2 is disposed between the two guiding portions 3丄, and is provided with a first a half flow channel 3 2 1 and a first bonding surface 3 2 2 ; the first half flow channel 3 2 1 is connected to the guiding channel 3 1 3 of the guiding portion 3 1 ; the covering member 4 is covered A second half tube 42 and two fixing portions 41 are disposed on the guiding member 3; 200846570. The second half tube 42 is connected to the fixing portion 41, and is attached to the half tube 3 2 An extension portion 4 2 3 is formed on both ends of the extension portion 4 2 3 . The extension portion 4 2 3 is provided with an extension surface 4 2 3 1 , and the extension surface 4 2 3 1 is engaged with the interface surface 3 of the approach member 3 5 affixed; and the second half pipe 4 2 • is provided with a second half flow channel 4 2 1 and a second bonding surface 4 2 2 ; the fixing portion 4 1 is covered on the top surface 3 1 4 The fisheye hole 4 1 1 with respect to the screw hole 3 1 1 of the top surface 3 1 4 is provided thereon; the above description is the detailed description of each component and their mutual matching relationship, and the embodiment of the embodiment is described below. Please refer to Figures 1 to 3, 4A, 4B, 5A, 5B, 6A, 6B and 7 to 8 First, the guiding portion 3 1 of the guiding member 3 is installed in the mounting hole 2 2 1 of the nut 2, so that the bottom surface 3 1 6 of the guiding portion 3 1 and the mounting hole 2 2 The surface of the first surface of the guiding portion 31 is attached to the inner edge of the mounting hole 2 2 1 to prevent foreign matter from being passed by the bottom surface 3 and the blocking surface 2 2 . 1 1 and the gap between the side surface and the inner edge of the mounting hole 2 2 1 invades the inside of the nut 2; and then the fixing member G is inserted through the through hole 2 3 of the nut 2, and the screw on the side of the guiding portion 3 1 Hole 3; [1 screw-locking, so that the guide member 3 can be installed; in addition, it is worth mentioning that the present invention can be applied to the screw-free screw 11 200846570 1; and when the guide After the installation of the piece 3 is completed, the filling step of the rolling element G can be performed, and after the filling is completed, the installation step of the reflow device 9 is continued. Moreover, after the guiding member 3 is installed, the cover member 4 is covered on the upper portion thereof; wherein the fixing portion 41 is attached to the top surface of the guiding portion 31 to prevent foreign matter from being borrowed. The gap is invaded into the interior of the reflow device g 9 , and the fish eye hole 4 1 1 is inserted through the fixing member G, and then screwed to the screw hole 3 1 1 of the top surface 3 i 4 to form a reflow portion. 9 9 丄; at the same time, 10 the extension portion 4 2 3 is accommodated in the engaging hole 3 1 5 , and the extending surface 4 2 3 1 of the extending portion 42 3 is engaged with the engaging hole 3 1 5 1 5 1 fitting (as shown in the third figure) to form a smooth curve; at the same time, the first bonding surface 3 2 2 of the first half pipe 3 2 and the second half pipe 4 2 The second bonding surface 4 2 2 is fitted; the first half pipe 3 2 and the second half pipe 42 are combined to form a complete conduit gg 2 , and the conduit 9 9 2 is internally provided with the first half flow channel 3 2 1 and the second half flow channel 4 2 1 composition _ the return channel 9 9 2 1, the return channel 9 9 2 1 is connected with the guiding portion 3 1 3 of the return portion 9 9 1 to form a complete The return path. After the return path is engaged with the rolling groove 1 1 and the rolling groove 21, the rolling element G can be infinitely circulated in the ball screw. Hereinafter, in order to clearly illustrate the implementation features of the present invention, the following description of the present invention is a more advanced and practical way: 200846570 1. The nut is easy to process and can be processed using a conventional processing machine. 2. The reflow device is injection molded and can be mass produced. 3. By the guiding portion and the mounting hole, and then the through hole of the fixing nut is screwed with the screw hole of the guiding portion to achieve a fixed fixing effect, Λ to prevent the rolling member from circulating Vibration occurs when it generates noise. 4. The reflow device is easy to assemble and easy to position, and it is easy to fill the rolling parts. • In the above, the reflow device of the present invention breaks through the conventional problems, thereby shortening the assembly time of the ball screw and reducing the manufacturing cost of the reflow device, so the "industrial availability" of the present invention should be undoubtedly 5 In addition, the feature technology disclosed in the embodiment of the present invention has not been seen before in the publication 5 and has not been publicly used. 5 not only has the fact that the effect is improved as described above, but also has an additional effect that cannot be neglected. Therefore, the "novelty" and "progressiveness" of the present invention have been in compliance with the patent laws and regulations, and the application for invention patents has been filed according to law, and it is prayed for review and early granting of patents. The above description of the embodiments is intended to be illustrative of the invention and is not intended to limit the scope of the invention. 13 200846570 [Simple description of the diagram] The first figure is an explosion diagram of the outer circulation type ball screw of the present invention. The second figure is a combination view of the outer circulation type ball screw of the present invention. The third picture is a cross-sectional view of the second figure A-A. - Figure 4A is a perspective view of the nut of the present invention. The fourth B diagram is a partial enlarged view of the fourth A diagram X. Figure 5A is a perspective view of the guide member of the present invention. • Figure 5B is a bottom view of the guide of the present invention. Figure 6A is a view of the cover of the present invention taken along the sixth section of the present invention. Figure 7 is a perspective view of the reflow device of the present invention. The eighth figure is a front view of the reflow device of the present invention.
【主要元件符號說明】 1 螺桿 11 滾動溝 2 螺帽 21 滾動槽 2 2 平面 2 2 1 安裝孔 2211 擋面 23 通孔 200846570 3 引導件 3 1 導引部 3 11 螺孔 ' 313 導引道 315 銜接孔 3 16 底面 3 2 第一半管 _ 3 2 2 第一貼合面 4 覆蓋件 4 1 固定部 4 2 第二半管 422 第二貼合面 4231 延伸面 9 9 迴流裝置 # 991迴流部 9921 導引道 G 固定件 3 12 指曱 314 頂面 3151 銜接面 321 第一半流道 411 魚眼孔 421 第二半流道 423 延伸部 9 9 2 導管 R 滾動件 15[Main component symbol description] 1 Screw 11 Rolling groove 2 Nut 21 Rolling groove 2 2 Plane 2 2 1 Mounting hole 2211 Stop surface 23 Through hole 200846570 3 Guide 3 1 Guide part 3 11 Screw hole ' 313 Guide path 315 Connection hole 3 16 bottom surface 3 2 first half tube _ 3 2 2 first bonding surface 4 cover member 4 1 fixing portion 4 2 second half tube 422 second bonding surface 4231 extension surface 9 9 reflow device # 991 reflow portion 9921 Guideway G Fixing member 3 12 Finger 314 Top surface 3151 Engagement surface 321 First half flow path 411 Fish eye hole 421 Second half flow path 423 Extension 9 9 2 Pipe R Roller 15