200831803 九、發明說明： 【發明所屬之技術領域】200831803 IX. Description of the invention: [Technical field to which the invention belongs]
本發明係提供-種具間隔子之滾珠螺桿 用途係使滾珠螺桿在使用時可達靜音及不干涉冓:正二 :㈣之功效;本發明係於滾珠螺桿之各滾珠間設:： 貝^求形間隔子，及於供滚珠滾動之螺帽螺旋溝槽、迴= 疋件之通道、迴流元件間之迴流道中，一 L 位移之凹陷導引道，藉間隔子將相鄰之兩滾珠動 之 =隔子受碰撞時不易產生料之特性，使螺珠 滾珠可處於靜音及順暢的滾動。 【先前技術】 請參閱圖一所示，其係一種習知具間隔子i 4之滾珠 螺桿之螺帽1 〇，該間隔子工4係以塑膠材質製成，^兩 側面係配合滾珠i 3而設為凹弧面，該間隔子丄4之仙 係將相鄰之滾珠i 3隔開’以防止滾珠丄3滾動時相互碰 撞而發出嚼音，且各滾珠i 3與間隔Η 4係藉緊密接 觸’使間隔子1 4被相鄰之兩滚珠丄3夹掣而成縣*狀 態：惟’因該間隔子“係以整個凹弧面怪受金屬鋼製成 之滾珠1 3之麟，該單-間隔子之兩凹弧面乃會被磨損 而略縮小，乃會使輯i 3㈣隔子i 4間產生間隙，而 設於滾珠螺桿i 〇中之間隔子係具相當多的數量，各間隔 子1 4累和後之磨損置若過多時，若再發生滾珠螺桿（圖 未不）傳動時振動過大，某些位置之間隔子丄4丄或丄4 2，會往下掉落，而與螺旋溝槽1 2底面磨損，或與迴流 元件1 5之入口端碰撞，造成整個滾珠1 3滾動時不順 200831803 具間隔子i :二::二部之各元件磨損，是以，該習知 【發明内容】衰珠螺桿乃有待改良。 相闕^=^桿\缺點，本發明人乃本著研發 以下發明目的之本發明誕生。進’〜有確能達成 碰撞，而達到靜音之:果使相鄰之兩滾珠間不會相互 隔子的，其係藉將間隔子設為球形，使間 树及:門'V動’使間隔子與滾珠之接觸位置不斷改 欠磨:察阻力較小，而使間隔子不易磨損。 螺明目的’本發明之改良特徵係在於:滾珠 = 珠滾動位移之螺帽螺旋溝槽、迴流元件之通道 件間之迴流孔中，係設有-凹陷導引道， 糸：又有與滾珠成間隔設置之塑膠製球形間隔 —’ ^間隔子係介於相鄰兩滾珠之半球體與導引道間所涵 : = 子並與兩相鄰兩滾珠恒保持抵觸而使相 【實施方式】 為使貴審查委員及習於本項技藝之人士，對本發明有 200831803 更：步之瞭解，茲舉一較佳實施例’詳細說明如後：（惟， 本實施例僅為利於說明，本發明日後之實施，並不以此為 限’凡以本發明之技術特徵所為之改良實施，皆受本發明 所拘束）。 «月參閱圖一至圖四所示，其係一種内循環式滚珠螺桿 之螺帽2 0，該螺帽2〇係具一中心轴孔21，轴孔2ι 之内壁面係設有螺旋溝槽2 2，該螺帽2 〇之徑向端面係 有一軸向之迴流道2 4，該迴流道2 4之兩端於螺帽2 〇 軸孔2 1之内壁面係各設有一容置槽2 8、2 9，以供各 設置-迴流it件3 Q於其中，該各迴流元件3 〇係各具 軸向出入口3 3及-徑向出入口32，而各迴流元件3〇 之出入π 3 2至另-出人口 3 3 @ ’係具-隱藏於迴流元 件3 0中之f弧形的通道3工，該各迴流元件3 〇之轴向 出入口 3 3係與所對應之迴流道2 4該端銜接，而其徑向 出入口 3 2係與所對應之螺旋溝槽2 2之該處銜接，該螺 旋溝槽2 2、兩迴流元件3 〇、迴流道2 4間，乃構成一 供滾珠2 6滾動位移的完整迴流路徑，該螺旋溝槽2 2及 迴流道2 4及兩迴流元件3 〇之通道3 1中，係再各形成 有向下凹陷之弧形導引道2 3、2 5、3 4，該各導引道 2 3、2 5、3 4係供數塑膠製球形之間隔子2 7充塞於 其中，該間隔子2 7與滾珠2 6，則係間隔設置排列，該 間隔子2 7之體積與各導引道2 3、2 5、3 4之大小i 成正比關係，即間隔子2 7之體積愈大，則導引道2 3、 2 5、3 4須設為愈大，而間隔子2 7之體積則與滾珠螺 7 200831803 柃之負載強度成反比，因，該間隔子2 7體積愈大，滚珠 26之數量則相對減少，滾珠26數量愈少，滾珠螺桿之 負載強度即愈小，是以，該間隔子2 7之體積大小乃影響 滾珠螺桿之負載強度：該間隔子2 7之最小體積係控制^ 能使兩相鄰滾珠2 6分隔開而又距最近之距離，其係與相 鄰之兩滾珠2 6之半球體間恆保持接觸，並同時使兩滾珠 2 6間具-距離，使滾珠2 6間不會碰撞於—起，間隔子 2 7係保持在相鄰之兩滾珠2 6之半球體與導引道2 3或 f 2 5或3 4間所構成之範圍内；本發明藉該間隔子2 了係 以塑膠材質製成，其與金屬製之滚珠26磨擦時，並不會 產生過大之噪音，使滾珠螺桿作動時，達到靜音的效果: 且因滾珠2 6與間隔子2 7係不斷的滚動，間隔子2 7乃 不易磨損，間隔子2 7乃可保持在相鄰之兩滾珠26之半 球體與導引道2 3或2 5或3 4間所構成之範圍内，使滾 珠2 6、間隔子27可正常順暢的反覆滾動迴流，進而延 長滾珠螺桿之使用壽命。 1 請再配合參閱圖五、六所示，其係一種外循環式滾珠 螺桿之螺帽2 0，其與内循環式滾珠螺桿之差異，係在於 其係以數間隔之门形迴流元件4 〇將滾珠2 6引流至螺帽 2 0外侧，並使滚珠2 6僅在兩π形迴流元件4 〇及其間 之螺旋溝槽2 2間反覆滚動迴流，外循環式滾珠螺桿之迴 流路徑因此乃區分為一至數小迴流路徑，本實施例之迴流 元件4 0概呈一门形管體，其兩端係各具一出入口 4 2、 43,兩出入口42、43間亦係具一通道4 χ，該各迴 8 200831803 流元件4 0之兩出入口42、4 3係銜接在螺旋溝槽2 2 之不同位置，且各迴流元件4 〇係成平行等間距設置於螺 帽2 0外侧，該迴流元件4 〇之通道4 1係亦設有一向下 凹陷之孤形導引道4 4，以供塑膠製之球形間隔子2 7於 其中滚動位移，而螺帽2 〇之螺旋溝槽2 2中係亦設有向 下凹陷之弧形導引道23，該迴流元件4〇之兩出入口4 2、4 3乃與螺旋溝槽2 2之不同位置銜接，而迴流元件 40之導引道44亦與螺旋溝槽22之導引道23銜接， 本實施例之滾珠2 6與間隔子2 7亦成間隔排列，滾珠2 6與間隔子2 7則可在各小迴流路徑反覆滾動迴流，藉此 ，同樣使滚珠螺桿作動時，達到靜音的效果，同時，^滾 珠2 6、間隔子2 7可正常順暢的反覆滾動迴流，進二 長滾珠螺桿之使用壽命。 綜上所述’本發明實深具實雜及進步性，且妙 請人遍查國内外文獻，並無發現相同或近似者ς 符合專利法上有關發明之規定，爰依法提出申,。X : 9 200831803 f圖式簡單說明】 圖四係本發明内立體示意圖 二示意圖 1 0螺帽 1 3滾珠 1 4 2間隔子 2 0螺帽 2 3導引道 2 6滾珠 2 9容置槽 【主要元JS】珠螺桿之剖面示意圖。 1軸孔 1 4間隔子 15迴流元件 2 1軸孔 2 4迴流道 2 7間隔子 1 n xmjLr^ 1 2螺旋溝槽 1 4： 1間隔子 2 2螺旋溝槽 2 5導引道 2 8容置槽 3 2出入口 4 2出入口 30迴流元件31通道 3 3出入口 3 4導引道 4 0迴流元件41通道 4 3出入口 4 4導引道The invention provides a ball screw with a spacer for the purpose of making the ball screw reach mute and non-interference in use. The effect of the second: (4); the invention is arranged between the balls of the ball screw: a spacer, and in the spiral groove of the nut for rolling the ball, the channel of the returning element, the return channel between the reflow elements, and a recessed guide track of L displacement, the adjacent two balls are moved by the spacer = When the spacer is hit, it is not easy to produce the characteristics of the material, so that the ball of the bead can be silently and smoothly rolled. [Prior Art] Please refer to FIG. 1 , which is a nut 1 of a ball screw with a spacer i 4 , which is made of plastic material, and the two sides are matched with the ball i 3 . And the concave curved surface, the fairy of the spacer 丄4 separates the adjacent balls i 3 'to prevent the ball 丄 3 from colliding with each other when rolling, and the chewing sound is generated, and each of the balls i 3 and the spacer 系 4 Intimate contact 'make the spacer 14 4 by the adjacent two balls 丄 3 to form a county* state: only 'because the spacer' is a ball made of metal steel with the entire concave arc surface, The two concave surfaces of the single-spacer are slightly shrunk, which causes a gap between the spacers i 4 and the spacers i 4 , and the spacers provided in the ball screw i 相当 have a considerable amount. If the wear of the spacers 1 4 is too much, if the ball screw is too large, the vibration will be too large. If the gap is 丄4丄 or 丄4 2 at some positions, it will fall down. And the bottom surface of the spiral groove 1 2 wears, or collides with the inlet end of the reflow element 15 , causing the entire ball to roll when it is not smooth 200831803 With the spacer i: two:: the wear of the components of the two parts, the conventional [invention] the faint bead screw needs to be improved. The inventor is based on the research and development of the following invention The purpose of the invention was born. Into the '~ can indeed achieve a collision, and to achieve mute: If the two adjacent balls do not overlap each other, it is to set the spacer to a sphere, so that the tree and: The door 'V-moving' makes the position of contact between the spacer and the ball continuously changed: the resistance is small, and the spacer is not easy to wear. The improved feature of the invention is: the ball of the ball = bead rolling displacement The spiral groove and the return hole between the passage members of the reflow element are provided with a recessed guide track, and the cymbal has a plastic spherical space spaced apart from the ball—the ^ spacer is interposed between two adjacent balls. Between the hemisphere and the guide channel: = sub- and the two adjacent two balls are always in conflict with each other. [Embodiment] For the examiner and the person skilled in the art, the present invention has 200831803: A step-by-step understanding of a preferred embodiment is described in detail. However, the present embodiment is only for the purpose of explanation, and the implementation of the present invention is not limited thereto. Any improvement made by the technical features of the present invention is bound by the present invention. As shown in FIG. 4, it is an inner circulation type ball screw nut 20, the nut 2 has a central shaft hole 21, and the inner wall surface of the shaft hole 2 is provided with a spiral groove 22, the nut 2 The radial end face of the crucible has an axial return passage 24, and the two ends of the return passage 24 are respectively provided with a receiving groove 28, 29 in the inner wall surface of the nut 2 shaft hole 2 1 Each of the reflow elements 3 is provided with an axial inlet and outlet 3 3 and a radial inlet and outlet 32, and each of the reflow elements 3 is connected to the π 3 2 to the other to the population 3 3 @ '系具-f-shaped arc-shaped channel hidden in the reflow element 30, the axial inlet and outlet 3 3 of each reflow element 3 衔 is connected with the corresponding return channel 24, and its diameter Connecting the inlet and outlet 32 to the corresponding spiral groove 2 2, the spiral groove 2 2, the two reflow elements 3 〇, and the return channel 24 are formed. The complete return path for the rolling displacement of the ball 26, the spiral groove 2 2 and the return channel 24 and the channel 3 1 of the two reflow elements 3 are each formed with a curved guide channel 2 3 which is recessed downward. 2, 5, 3 4, the guide channels 2 3, 2 5, 3 4 are filled with a plastic spherical spacer 2 7 in which the spacers 27 and the balls 2 6 are arranged at intervals The volume of the spacer 27 is proportional to the size i of each of the guiding channels 2 3, 2 5, and 3 4 , that is, the larger the volume of the spacer 27 is, the guiding channel 2 3, 2 5, 3 4 The larger the spacing, the volume of the spacer 27 is inversely proportional to the load strength of the ball screw 7 200831803 因, because the larger the spacer 27 volume, the smaller the number of balls 26, the less the number of balls 26 The smaller the load strength of the ball screw, the smaller the volume of the spacer affects the load strength of the ball screw: the minimum volume control of the spacer 27 can separate the two adjacent balls 26 Open and close to the nearest distance, the system keeps in contact with the hemispheres of the adjacent two balls, and at the same time makes the two balls have a distance of -6 So that the balls 26 do not collide with each other, and the spacers 27 are held within the range formed by the hemispheres of the adjacent two balls 26 and the guide channels 23 or f 2 5 or 34; The invention is made of plastic material by the spacer 2, and when it is rubbed with the metal ball 26, it does not generate excessive noise, so that when the ball screw is actuated, the mute effect is achieved: and because of the ball 26 The spacers 27 are continuously rolling, the spacers 27 are not easily worn, and the spacers 27 are held between the hemispheres of the adjacent two balls 26 and the guide channels 23 or 25 or 34. Within the range, the ball 26 and the spacer 27 can be smoothly and repeatedly rolled and reflowed, thereby prolonging the service life of the ball screw. 1 Please refer to Figure 5 and Figure 6, which is a nut of externally-circulating ball screw 20, which differs from the inner-circulating ball screw in that it is a gate-shaped reflow element with a number of intervals. The ball 26 is drained to the outside of the nut 20, and the ball 26 is rolled back and forth only between the two π-shaped reflow elements 4 and the spiral groove 22 between them, and the return path of the outer-circulating ball screw is The reflow element 40 of the embodiment is a gate-shaped tube, and the two ends of the reflow element 40 have an inlet and outlet 4, 2. The two inlets 42 and 43 also have a passage 4 χ The two inlets 42 and 43 of the flow element 40 of the 2008 8803 are connected at different positions of the spiral groove 2 2 , and the reflow elements 4 are arranged at equal intervals in the outer side of the nut 20 , and the reflow is performed. The channel 4 1 of the component 4 is also provided with a downwardly-shaped orphaned guiding channel 44 for the plastic spacers to be displaced in a rolling manner, and the spiral groove 2 2 of the nut 2 The middle system is also provided with an arc-shaped guide channel 23 which is recessed downward, and the return element 4 has two entrances and exits 4, 4 3 is connected to the different positions of the spiral groove 22, and the guide channel 44 of the reflow element 40 is also engaged with the guide track 23 of the spiral groove 22. The ball 26 of the embodiment is also spaced from the spacer 27. Arrangement, the ball 2 6 and the spacer 2 7 can be rolled back and forth in each small return path, thereby also achieving the mute effect when the ball screw is actuated, and at the same time, the ball 26 and the spacer 2 can be smoothly smooth. The rolling backflow is repeated, and the service life of the two long ball screws is entered. In summary, the present invention is very practical and progressive, and it has been found that the same or similar approximations are in compliance with the relevant provisions of the patent law, and are submitted in accordance with the law. X : 9 200831803 f Simple description of the diagram] Figure 4 is a schematic diagram of the internal schematic diagram of the invention 1 0 nut 1 3 ball 1 4 2 spacer 2 0 nut 2 3 guide channel 2 6 ball 2 9 accommodating groove [ Main element JS] Schematic diagram of the bead screw. 1 shaft hole 1 4 spacer 15 reflow element 2 1 shaft hole 2 4 return channel 2 7 spacer 1 n xmjLr^ 1 2 spiral groove 1 4: 1 spacer 2 2 spiral groove 2 5 guide channel 2 8 capacity Slot 3 2 inlet and outlet 4 2 inlet and outlet 30 reflow element 31 channel 3 3 inlet and outlet 3 4 guide channel 4 0 reflow element 41 channel 4 3 inlet and outlet 4 4 guide channel