201100667 六、發明說明： 【發明所屬之技術領域】 本發明係為一種線性傳動元件，尤指一種具鏈條 式傳動元件。 【先前技術】 滾珠螺桿之原理，係在螺桿與螺帽之間加入鋼 珠，以鋼珠滾動運動，取代傳統艾克姆螺桿（ACME)的 0 滑動摩擦傳動，大大降低摩擦耗損，有助於維持高效 率與高精度。 滾珠的使用使得螺桿的移動更為順暢，然而，相 鄰的滾珠在滾動過程中，容易彼此碰撞並發出很大的 噪音，這樣的碰撞使得滾珠壽命縮短，連帶影響整體 螺桿裝置之壽命。 為了改善此一問題，先前技術提出以鏈條固定滾 q 珠之裝置，美國公告5, 993, 064號專利更進一步提供一 種改良式的滾珠鏈條，該滾珠鏈條係以具有彈性之材 料製成，並包含四個帶狀物固定滾珠的四周，使該鏈 條可任意方向地自由彎折，而滾珠仍固定在相同的位 置，該滾珠鏈條並可應用在線性滑軌以及滾珠螺桿等 裝置中。 然而，在滾珠螺桿模組中，尚需設有一循環路徑， 導引滾珠迴流至螺旋狀溝槽中，以形成不斷循環的滾 201100667 珠執道。使用滚珠鏈條時，當行經上述之循環路徑時， 鏈條必須改變運動方向，才能形成迴流。然，若此循 環路徑未經良好設計，則鏈條難以順暢地通過並改變 行進方向，因此習知的設計，其鏈條因為不當地扭轉 及拉扯而產生斷裂。前述美國公告5, 993, 064號專利 雖提及其滾珠鏈條可以應用在螺桿裝置，並在螺帽内 設有循環裝置供滚珠鏈條迴流，然而，卻未提及如何 讓滾珠鏈條順暢通過循環裝置之設計，在實際應用 上，由於鏈條的兩側在從螺旋軌道進到循環裝置時， 會進行三維迴轉，若迴轉路徑未經過特殊角度的設 計，則鏈條的内侧會被擠壓，而外側會被拉扯，兩側 因變形量的不同，而產生斷裂。故目前雖有設有滚珠 鏈條的線性滑執上市，但是設有滾珠鏈條的滾珠螺桿 卻一直無法被設計及製造出來。 【發明内容】 基於上述習知技術之問題點，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，設計一種可讓鏈條順 暢運行之傳動元件的循環路徑。 為達上述之目的，本發明係為一種具鏈條式傳動 元件，係包含： 一螺桿，其外緣設有螺旋狀之滾動溝； 201100667 -螺帽，其設有—供該螺桿穿設之穿孔，該穿孔 内緣係設有相對賴_之㈣槽，該軸溝與滚動 槽係構成-貞荷路徑’且_帽外緣設有複數個與該 穿孔相連通之容置孔，該容置孔係與該負荷路徑相連 接， 一迴流元件，外型為一门字型，其具有第一腳部 及第二腳部設置於兩端部，該第一腳部及第二腳部係 容設於該容置孔，且該迴流元件設有貫穿該第—腳部 及第二腳部係呈门字型之迴流道，而該迴流道係與該 負荷路徑相連接而形成一循環路徑，且該迴流道内緣 係設有兩相對設置之第一導引道及第二導引道，該第 一導引道及第二導引道之兩端係分別與該螺桿外徑與 螺帽内徑所形成的間隙銜接，且該第一導引道及第二 導引道係由一端向另一端以相同方向扭轉16〇〜2〇〇度 (-人佳扭轉角度為175〜185度；最佳扭轉角度為180度） 設置，而該第一腳部之第一導引道與第二導引道的端 部與第二腳部之第一導引道與第二導引道的端部的位 置方向不同； 一鏈條’係具有複數間隔部及兩連結部，該連結 部係位於該間隔部之兩侧並連接該間隔部，使各間隔 部之間具有一容納空間，該鏈條於負荷路徑時’該連 結部係容置於該螺桿外徑與螺帽内徑所形成的間隙 201100667 中，當該鏈條於迴流道時，該連結部係分別容置於該 第一導引道與第二導引道中，且該鏈條藉由該第一導 引道與第二導引道的引導而產生扭轉； 複數滾動件，係容置於該容納空間中，係作為該 螺桿與螺帽間的傳動介質。 為了更進一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】 請參閱圖一至圖五所示，本發明係為一種具鏈條 式傳動元件，係包含： 一螺桿1，其外緣設有螺旋狀之滾動溝11 ; 一螺帽2，其設有一供該螺桿1穿設之穿孔21， 該穿孔21内緣係設有相對該滾動溝11之滾動槽211， 該滾動溝11與滾動槽211係構成一負荷路徑，且該螺 帽2外緣設有複數個與該穿孔21相連通之容置孔（未 顯示），該容置孔係與該負荷路徑相連接；201100667 VI. Description of the Invention: [Technical Field] The present invention is a linear transmission element, and more particularly a chain transmission element. [Prior Art] The principle of the ball screw is to add steel balls between the screw and the nut to roll the steel ball and replace the zero sliding friction transmission of the traditional Acme screw (ACME), which greatly reduces friction loss and helps to maintain high Efficiency and high precision. The use of the balls makes the movement of the screw smoother. However, the adjacent balls easily collide with each other and generate a large noise during the rolling process. Such collisions shorten the life of the balls and affect the life of the entire screw unit. In order to improve this problem, the prior art proposes a device for fixing a rolling bead by a chain. U.S. Patent No. 5,993,064 further provides an improved ball chain which is made of a material having elasticity and The four-belt fixed ball is surrounded by the ball so that the chain can be freely bent in any direction, and the ball is still fixed at the same position. The ball chain can be applied to devices such as linear slides and ball screws. However, in the ball screw module, it is necessary to provide a circulation path for guiding the balls to flow back into the spiral groove to form a continuously circulating roller 201100667 bead. When using a ball chain, when the above-mentioned circulation path is passed, the chain must change the direction of motion to form a reflow. However, if the circulation path is not well designed, it is difficult for the chain to smoothly pass and change the direction of travel, so that the conventional design causes the chain to break due to improper twisting and pulling. The aforementioned U.S. Patent No. 5,993,064 discloses that the ball chain can be applied to the screw device and that a circulation device is provided in the nut for the ball chain to recirculate. However, there is no mention of how to smoothly pass the ball chain through the circulation device. In the practical application, since the two sides of the chain enter the circulation device from the spiral track, three-dimensional rotation will be carried out. If the rotation path is not designed with a special angle, the inner side of the chain will be squeezed, and the outer side will be squeezed. Being pulled, the sides are broken due to the difference in the amount of deformation. Therefore, although a linear slipper with a ball chain is currently available, the ball screw with a ball chain has not been designed and manufactured. SUMMARY OF THE INVENTION Based on the problems of the above-described conventional techniques, the inventors of the present invention have succeeded in research and improvement, and the invention of the following inventions can be finally achieved. That is, the primary object of the present invention is to design a circulation path for a transmission element that allows the chain to run smoothly. In order to achieve the above object, the present invention is a chain transmission component comprising: a screw having a spiral rolling groove at its outer edge; 201100667 - a nut provided with a perforation for the screw to be inserted The inner edge of the perforation is provided with a (four) groove relative to the (four) groove, the axial groove and the rolling groove system constitute a "loading path" and the outer edge of the cap is provided with a plurality of receiving holes communicating with the perforation, the capacity The hole system is connected to the load path, and a reflow element has a shape of a gate shape, and the first leg portion and the second leg portion are disposed at both end portions, and the first leg portion and the second leg portion are The reflow element is disposed in the accommodating hole, and the reflow element is provided with a gate runner extending through the first leg portion and the second leg portion, and the return channel is connected to the load path to form a circulation path. And the first guiding channel and the second guiding channel are disposed on the inner edge of the return channel, and the two ends of the first guiding channel and the second guiding channel are respectively corresponding to the outer diameter of the screw and the nut a gap formed by the inner diameter is engaged, and the first guiding channel and the second guiding channel are phased from one end to the other end The direction of the first guide and the second guide of the first leg are reversed by 16 〇 to 2 〇〇 (-the good twist angle is 175 to 185 degrees; the optimum twist angle is 180 degrees) The position direction of the end of the first guiding channel and the second guiding channel of the second leg portion is different; the chain link has a plurality of spacing portions and two connecting portions, and the connecting portion is located at the two of the spacing portions The side portion is connected to the partition portion so as to have a receiving space between the partition portions. When the chain is in the load path, the connecting portion is configured to be placed in the gap 201100667 formed by the outer diameter of the screw and the inner diameter of the nut. When the chain is in the return channel, the connecting portion is respectively received in the first guiding channel and the second guiding channel, and the chain is twisted by the guiding of the first guiding channel and the second guiding channel; A plurality of rolling elements are placed in the accommodating space as a transmission medium between the screw and the nut. For a better understanding of the features and technical aspects of the present invention, reference should be made to the description of the embodiments of the invention. By. [Embodiment] Referring to Figures 1 to 5, the present invention is a chain transmission component comprising: a screw 1 having a spiral rolling groove 11 at its outer edge; a nut 2, which is provided There is a through hole 21 through which the screw 1 is disposed. The inner edge of the through hole 21 is provided with a rolling groove 211 opposite to the rolling groove 11. The rolling groove 11 and the rolling groove 211 form a load path, and the outer edge of the nut 2 And a plurality of receiving holes (not shown) communicating with the through hole 21, the receiving holes being connected to the load path;
一迴流元件3〔請參閱圖五所示，該迴流元件3 係由第一構件3A與第二構件3B所組成，亦可由三個 以上之構件所組成〕，外型為一门字型，其具有第一腳 部31A及第二腳部31B設置於兩端部，該第一腳部31A 201100667 及第二腳部31B係容設於該容置孔，且該迴流元件3 設有貫穿該第一腳部31A及第二腳部31B係呈门字型 之迴流道32，而該迴流道32係與該負荷路徑相連接 而形成一循環路徑，且該迴流道32内緣係設有兩相對 設置之第一導引道321及第二導引道322，該第一導 引道321及第二導引道322之兩端係分別與該螺桿1 外徑與螺帽2内徑所形成的間隙銜接，且該第一導引 〇 道321及第二導引道322係由一端向另一端以相同方 向扭轉160〜200度（次佳扭轉角度為175〜185度；最佳 扭轉角度為180度）設置，而該第一腳部31A之第一導 引道321與第二導引道322的端部與第二腳部31B之 第一導引道321與第二導引道322的端部的位置方向 不同〔請參閱圖四所示，該第一腳部31A之第一導引 道321係位於該第一腳部31A之内側P，該第一腳部 〇 31A之第二導引道322係位於該第一腳部31A之外側 R，該第二腳部31B之第一導引道321係位於該第二腳 部31B之外侧R，該第二腳部31B之第二導引道322 係位於該第二腳部31B之内侧P〕； 一鏈條4，係具有複數間隔部41及兩連結部42， 該連結部42係位於該間隔部41之兩侧並連接該間隔 部41，使各間隔部41之間具有一容納空間，該鏈條4 於負荷路徑時，該連結部42係容置於該螺桿1外徑與 7 201100667 螺帽2内徑所形成的間隙中，當該鏈條4於迴流道32 時，該連結部42係分別容置於該第一導引道321與第 二導引道322中，且該鏈條4藉由該第一導引道321 與第二導引道322的引導而產生扭轉（請參閱圖三及 圖四所示，該鏈條4與該第一導引道321與第二導引 道322之扭轉方向相同）； 複數滾動件5，係容置於該容納空間中，係作為 該螺桿1與螺帽2間的傳動介質。 綜所上述，鏈條於循環路徑運行時，最容易循環 不順暢的地方為迴流道的部分，而藉由本發明迴流道 中的第一導引道與第二導引道以同一方向扭轉設置的 設計，會讓鏈條循環的更為順暢並減少對鏈條所產生 的應力，以降低鏈條斷裂的問題產生，並延長傳動元 件的使用壽命，且提昇傳動元件的精度，所以本發明 之『具有產業之可利用性』應已毋庸置疑，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，亦未曾被公開使用，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，析請惠予審查 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 201100667 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。a reflow element 3 (refer to FIG. 5, the reflow element 3 is composed of the first member 3A and the second member 3B, or may be composed of three or more members), and the outer shape is a gate type. The first leg portion 31A and the second leg portion 31B are disposed at the two end portions, and the first leg portion 31A 201100667 and the second leg portion 31B are received in the receiving hole, and the reflow element 3 is disposed through the first portion The leg portion 31A and the second leg portion 31B are gate-type return channels 32, and the return channel 32 is connected to the load path to form a circulation path, and the inner edge of the return channel 32 is provided with two opposite sides. The first guiding channel 321 and the second guiding channel 322 are disposed, and the two ends of the first guiding channel 321 and the second guiding channel 322 are respectively formed by the outer diameter of the screw 1 and the inner diameter of the nut 2 The gaps are engaged, and the first guiding channel 321 and the second guiding channel 322 are twisted from one end to the other end by 160 to 200 degrees in the same direction (the second best twist angle is 175 to 185 degrees; the optimal twist angle is 180) And the first guiding channel 321 of the first leg portion 31A and the first portion of the second guiding channel 322 and the first portion of the second leg portion 31B The direction of the end of the approaching path 321 and the second guiding channel 322 is different. (Please refer to FIG. 4, the first guiding channel 321 of the first leg portion 31A is located on the inner side P of the first leg portion 31A. The second guiding channel 322 of the first leg portion 31A is located on the outer side R of the first leg portion 31A, and the first guiding channel 321 of the second leg portion 31B is located outside the second leg portion 31B. The second guiding channel 322 of the second leg portion 31B is located inside the second leg portion 31B. The chain 4 has a plurality of spacing portions 41 and two connecting portions 42. The connecting portion 42 is located at the second leg portion 31B. The spacers 41 are connected to the two sides of the spacers 41 so as to have a receiving space between the spacers 41. When the chain 4 is in the load path, the connecting portion 42 is accommodated in the outer diameter of the screw 1 and 7 201100667 In the gap formed by the inner diameter of the cap 2, when the chain 4 is on the return channel 32, the connecting portion 42 is respectively received in the first guiding channel 321 and the second guiding channel 322, and the chain 4 is borrowed. The twisting is caused by the guiding of the first guiding channel 321 and the second guiding channel 322 (refer to FIG. 3 and FIG. 4, the chain 4 and the first guiding channel 321 are The second guiding passage 322 has the same twisting direction; the plurality of rolling members 5 are housed in the receiving space as a transmission medium between the screw 1 and the nut 2. In the above, when the chain runs in the circulation path, the most difficult part of the circulation is the part of the return flow, and the first guide track and the second guide track in the return path of the present invention are designed to be twisted in the same direction. It will make the chain cycle smoother and reduce the stress on the chain, reduce the problem of chain breakage, and prolong the service life of the transmission component, and improve the accuracy of the transmission component, so the invention has the industry available. There is no doubt that the characteristics of the technology disclosed in the examples of this case have not been seen in the publications before the application, nor have they been used publicly, not only have the fact that the effects are enhanced as described above, but also have 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 the application for review has been granted and the patent has been granted as soon as possible. . 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.
9 201100667 【圖式簡單說明】 圖一為本發明具鏈條式傳動元件立體圖。 圖二為本發明具鍊條式傳動元件之螺帽局部剖視 圖。 圖三為本發明具鍊條式傳動元件去除螺帽與迴流 元件之立體圖。 圖四為本發明具鍊條式傳動元件之迴流元件之立 體圖。 圖五為圖四A — A剖視圖。 201100667 【主要元件符號說明】 1螺桿 11滾動溝 2螺帽 21穿孔 211滾動槽 3迴流元件 〇 3A第一構件 3B第二構件 31A第一腳部 31B第二腳部 32迴流道 321第一導引道 322第二導引道 q 4鏈條 41間隔部 42連結部 5滾動件 R外側 P内侧9 201100667 [Simplified illustration of the drawings] Figure 1 is a perspective view of a chain transmission component of the present invention. Figure 2 is a partial cross-sectional view showing the nut of the chain transmission element of the present invention. Figure 3 is a perspective view of the chain transmission element removing nut and reflow element of the present invention. Figure 4 is a perspective view of the reflow element of the chain transmission element of the present invention. Figure 5 is a cross-sectional view of Figure 4A-A. 201100667 [Description of main component symbols] 1 screw 11 rolling groove 2 nut 21 perforation 211 rolling groove 3 reflow element 〇 3A first member 3B second member 31A first leg portion 31B second leg portion 32 return channel 321 first guide Lane 322 second guide track q 4 chain 41 spacer portion 42 joint portion 5 inside the rolling member R outer side P