TWM593490U

TWM593490U - Ball screw assembly

Info

Publication number: TWM593490U
Application number: TW108215970U
Authority: TW
Inventors: 李思穎
Original assignee: 李思穎
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-04-11

Abstract

A ball screw assembly includes an guider, an opening nut, an opening sleeve, a first circulator, a second circulator and a ball assembly. The opening nut includes an axial cylinder having an axial opening. An inner spiral channel of the axial cylinder and a spiral channel of the guider are correspondingly formed an inner ball channel. The opening sleeve is axially sleeved on the axial cylinder. An inner wall of the opening sleeve and an outer wall of the axial cylinder are correspondingly formed an outer spiral ball channel. The first circulator is disposed on a first axial wall. The second circulator is disposed on a second axial wall. Wherein the inner ball channel, a first curve of the first circulator, the outer spiral ball channel and a second curve of the second circulator are formed the ball circulation channel. The ball assembly are rolled in the ball circulation channel.

Description

滾珠循環導引裝置Ball circulation guide device

本新型是有關於一種滾珠循環導引裝置，特別是具有軸向開口的滾珠循環導引裝置。The present invention relates to a ball circulation guide device, especially a ball circulation guide device with an axial opening.

現今之滾珠螺桿裝置，係透過螺桿及螺帽的配合，來將轉動運動轉換為直線運動。經由使得滾珠螺帽中設置於循環通路內滾動的滾珠與具有螺旋槽的螺桿相配合，以減少滾珠螺帽及螺桿間在相對作動時所產生的摩擦力。Today's ball screw device, through the cooperation of the screw and the nut, converts the rotary motion into a linear motion. By making the balls set in the ball nut rolling in the circulation path cooperate with the screw with the spiral groove, the friction force generated when the ball nut and the screw are moved relative to each other is reduced.

現有的滾珠螺帽多為完整圓筒狀，當螺桿較長而設置有避免螺桿下垂的支撐座時，就需要在支撐座設置退位機構。當滾珠螺帽在螺桿上轉動要經過有支撐座之處時，透過退位機構將支撐座先暫時遠離螺桿。在滾珠螺帽通過後，退位機構再使得支撐座回復至支撐位置，以提供螺桿所需的支撐力。Existing ball nuts are mostly in the form of complete cylinders. When the screw is long and a support seat is provided to avoid the sagging of the screw, it is necessary to provide a retracting mechanism on the support seat. When the ball nut rotates on the screw to pass through the place where there is a support seat, the support seat is first temporarily moved away from the screw through the retraction mechanism. After the ball nut passes through, the retraction mechanism returns the support base to the support position to provide the support force required by the screw.

然而，使用上述方式，一方面需要在各個支撐座額外設置退位機構。另一方面，各個支撐座在遠離螺桿時，若該段螺桿因自身重量下垂，則滾珠螺帽在經過該段螺桿時，螺桿有可能產生額外的晃動，或是由於螺桿彎曲而使得滾珠無法在螺紋槽中滾動等問題，而影響實際在製程中應用時製造精度的問題。However, with the above method, on the one hand, it is necessary to additionally provide a disengagement mechanism on each support base. On the other hand, when each support base is far from the screw, if the section of the screw sags due to its own weight, the ball nut may cause additional sway when the screw passes through the section of the screw, or the ball may not be able to Problems such as rolling in the thread groove affect the manufacturing accuracy when actually applied in the manufacturing process.

有鑑於此，本新型於一實施例中提供滾珠循環導引裝置包括導引件、開口螺帽、開口護罩、第一循環器、第二循環器以及滾珠循環組。導引件具有中心軸以及螺旋槽道，螺旋槽道環繞設置於導引件的外環週。開口螺帽穿設滑移於導引件上。開口螺帽包括軸向筒體，軸向筒體具有軸向開口。軸向筒體並於軸向開口之相對二側設有第一軸向壁及第二軸向壁。軸向筒體包括內環壁及外環壁，內環壁具有內螺旋槽道，內螺旋槽道與導引件之螺旋槽道彼此對應並共同形成內滾珠通道。In view of this, in one embodiment, the present invention provides a ball circulation guide device including a guide, an open nut, an open shield, a first circulator, a second circulator, and a ball circulation group. The guide has a central axis and a spiral channel. The spiral channel surrounds the outer circumference of the guide. The open nut is slipped on the guide piece. The split nut includes an axial cylinder, and the axial cylinder has an axial opening. The axial cylinder is provided with a first axial wall and a second axial wall on opposite sides of the axial opening. The axial cylinder includes an inner ring wall and an outer ring wall. The inner ring wall has an inner spiral channel. The inner spiral channel and the spiral channel of the guide correspond to each other and together form an inner ball channel.

開口護罩軸向套設於軸向筒體外週，開口護罩具有內週壁。內週壁與軸向筒體之外環壁彼此對應並共同形成外螺旋滾珠通道。外螺旋滾珠通道於一平面投影中，外螺旋滾珠通道相對中心軸斜向設置。平面與由中心軸之一端觀看開口護罩時之對稱面相互垂直並平行中心軸。第一循環器設置於第一軸向壁，第一循環器包括第一彎道。第一彎道的二端分別對應連通內滾珠通道及外螺旋滾珠通道。第二循環器設置於第二軸向壁。第二循環器包括第二彎道，第二彎道的二端分別對應連通內滾珠通道及外螺旋滾珠通道。滾珠循環組包括複數鋼珠。其中，內滾珠通道、第一彎道、外螺旋滾珠通道及第二彎道共同形成滾珠循環通道，滾珠循環組滾動於滾珠循環通道中。The opening shield is axially sleeved on the outer periphery of the axial cylinder, and the opening shield has an inner peripheral wall. The inner peripheral wall and the outer ring wall of the axial cylinder correspond to each other and together form an outer spiral ball channel. The outer spiral ball channel is in a plane projection, and the outer spiral ball channel is disposed obliquely with respect to the central axis. The plane and the symmetry plane when viewing the opening shield from one end of the central axis are perpendicular to each other and parallel to the central axis. The first circulator is disposed on the first axial wall, and the first circulator includes a first bend. The two ends of the first bend correspond to the inner ball channel and the outer spiral ball channel, respectively. The second circulator is disposed on the second axial wall. The second circulator includes a second bend, and two ends of the second bend respectively communicate with the inner ball channel and the outer spiral ball channel. The ball circulation group includes plural steel balls. Among them, the inner ball channel, the first curved path, the outer spiral ball channel and the second curved path together form a ball circulation channel, and the ball circulation group rolls in the ball circulation channel.

由於開口螺帽的軸向筒體上具有軸向開口，當將滾珠螺帽設置於導引件（例如螺桿或轉換棒）上移動時，即使在導引件下方設置有支撐座，開口螺帽在通過支撐座之處可藉由軸向開口通過支撐座，而不會與支撐座相互干涉。藉此，不需要在支撐座上設置退位機構。並且在開口螺帽通過支撐座處時，支撐座可維持支撐導引件的狀態，而不會造成因為支撐座離開使得導引件下垂變形，影響實際在製程中應用時製造精度的問題。而開口護罩除了可以與軸向筒體共同形成外螺旋滾珠通道，以使得鋼珠在外螺旋滾珠通道內滾動外，也可以提供防塵的功效。Since the axial barrel of the split nut has an axial opening, when the ball nut is set on a guide (such as a screw or a conversion rod) and moves, even if a support seat is provided under the guide, the split nut Where it passes through the support seat, it can pass through the support seat through an axial opening without interfering with the support seat. Thereby, there is no need to provide a dislocation mechanism on the support base. In addition, when the open nut passes through the support base, the support base can maintain the state of supporting the guide without causing the guide to sag and deform due to the departure of the support, which affects the manufacturing accuracy of the actual application in the manufacturing process. The opening shield can form an outer spiral ball channel together with the axial cylinder, so that the steel ball can roll in the outer spiral ball channel, and can also provide a dustproof effect.

在一些實施例中，內週壁表面與外環壁更形成另一外螺旋滾珠通道。第一彎道的二端分別對應連通內滾珠通道及另一外螺旋滾珠通道。第二彎道的二端分別對應連通內滾珠通道及另一外螺旋滾珠通道。內滾珠通道、第一彎道、另一外螺旋滾珠通道及第二彎道共同形成另一滾珠循環通道。滾珠循環組選擇性地滾動於滾珠循環通道或另一滾珠循環通道中。In some embodiments, the inner peripheral wall surface and the outer ring wall further form another outer spiral ball channel. The two ends of the first bend correspond to the inner ball channel and the other outer spiral ball channel, respectively. The two ends of the second curved path respectively correspond to the inner ball channel and the other outer spiral ball channel. The inner ball channel, the first curved channel, the other outer spiral ball channel and the second curved channel together form another ball circulation channel. The ball circulation group selectively rolls in the ball circulation channel or another ball circulation channel.

在一些實施例中，第一彎道相對於第一循環器之短邊斜向設置，且第二彎道相對於第二循環器之短邊斜向設置。In some embodiments, the first curve is disposed diagonally with respect to the short side of the first circulator, and the second curve is disposed diagonally with respect to the short side of the second circulator.

在一些實施例中，第一彎道與第一循環器之短邊相互平行設置，且第二彎道與第二循環器之短邊相互平行設置。In some embodiments, the first curve and the short side of the first circulator are parallel to each other, and the second curve and the short side of the second circulator are parallel to each other.

在一些實施例中，第一循環器的第一彎道為複數個，各第一彎道彼此平行設置。第二循環器的第二彎道為複數個，各第二彎道彼此平行設置。In some embodiments, there are a plurality of first bends of the first circulator, and each first bend is arranged parallel to each other. The second bend of the second circulator is plural, and each second bend is arranged parallel to each other.

在一些實施例中，滾珠循環導引裝置更包括滾珠保持器，複數鋼珠係由滾珠保持器串聯。In some embodiments, the ball circulation guiding device further includes a ball retainer, and a plurality of steel balls are connected in series by the ball retainer.

在一些實施例中，軸向筒體之外環壁具有外槽道，以與內週壁共同形成外螺旋滾珠通道。進一步，在一些實施例中，開口護罩之內週壁具有內槽道，並對應外槽道設置，以使外槽道與內槽道對應形成外螺旋滾珠通道。In some embodiments, the outer cylindrical wall of the axial cylinder has an outer channel to form an outer spiral ball channel together with the inner peripheral wall. Further, in some embodiments, the inner peripheral wall of the opening shield has an inner channel and is disposed corresponding to the outer channel, so that the outer channel corresponds to the inner channel to form an outer spiral ball channel.

在一些實施例中，開口護罩之內週壁具有內槽道，以與軸向筒體之外環壁共同形成外螺旋滾珠通道。In some embodiments, the inner peripheral wall of the split shroud has an inner channel to form an outer spiral ball channel with the outer ring wall of the axial cylinder.

以下在實施方式中詳細敘述本新型之詳細特徵以及優點，其內容足以使任何熟悉相關技藝者瞭解本新型之技術內容並據以實施，且根據本說明書所揭露之內容、申請專利範圍及圖式，任何熟習相關技藝者可輕易地理解本新型相關之目的及優點。The detailed features and advantages of the new model are described in the following embodiments. The content is sufficient for anyone familiar with the relevant art to understand and implement the technical content of the new model, and according to the contents disclosed in this specification, the scope of patent application and the drawings Anyone who is familiar with related skills can easily understand the purpose and advantages of this new type.

請先參閱圖1至圖5，圖1為本新型所述一實施例的滾珠循環導引裝置之立體圖，圖2為本新型所述一實施例的滾珠循環導引裝置之分解圖，圖3為本新型所述一實施例的滾珠循環導引裝置另一視角之分解圖，圖4為本新型所述一實施例的開口螺帽之俯視圖，圖5為本新型所述一實施例的第二循環器之俯視圖。Please refer to FIGS. 1 to 5 first. FIG. 1 is a perspective view of a ball circulation guide device according to an embodiment of the present invention. FIG. 2 is an exploded view of the ball circulation guide device according to an embodiment of the present invention. FIG. 3 FIG. 4 is an exploded view of the ball circulation guide device according to another embodiment of the present invention from another perspective. FIG. 4 is a top view of an open nut according to the present embodiment. FIG. 5 is a first view of the present embodiment. Top view of the second circulator.

由圖1及圖2可見，在本實施例中，滾珠循環導引裝置包括導引件10、開口螺帽20、開口護罩30、第一循環器40、第二循環器50以及滾珠循環組60。導引件10可為例如螺桿或轉換棒，在本實施例中係以螺桿為例說明。由圖1可見，導引件10具有中心軸C以及螺旋槽道11。As can be seen from FIGS. 1 and 2, in this embodiment, the ball circulation guide device includes a guide 10, an opening nut 20, an opening shield 30, a first circulator 40, a second circulator 50, and a ball circulation group 60. The guide 10 may be, for example, a screw or a conversion rod. In this embodiment, the screw is used as an example. As can be seen from FIG. 1, the guide 10 has a central axis C and a spiral channel 11.

由圖1及圖2可見，開口螺帽20包括軸向筒體21，軸向筒體21具有軸向開口211。軸向筒體21於軸向開口211之相對二側設有第一軸向壁212及第二軸向壁213。軸向筒體21包括內環壁214及外環壁215，內環壁214具有內螺旋槽道2141。內螺旋槽道2141與導引件10之螺旋槽道11會彼此對應並共同形成內滾珠通道。詳細來說，導引件10具有螺旋槽道11環繞設置於導引件10的外環週。螺旋槽道11係沿著導引件10外環週以所需螺旋角環繞設置。開口螺帽20軸向會穿設滑移於導引件10，並使得內螺旋槽道2141與導引件10之螺旋槽道11彼此對應並共同形成內滾珠通道。As can be seen from FIGS. 1 and 2, the open nut 20 includes an axial cylinder 21, and the axial cylinder 21 has an axial opening 211. The axial cylinder 21 is provided with a first axial wall 212 and a second axial wall 213 on opposite sides of the axial opening 211. The axial cylinder 21 includes an inner ring wall 214 and an outer ring wall 215, and the inner ring wall 214 has an inner spiral channel 2141. The inner spiral channel 2141 and the spiral channel 11 of the guide 10 correspond to each other and together form an inner ball channel. In detail, the guide 10 has a spiral channel 11 surrounding the outer circumference of the guide 10. The spiral groove 11 is arranged around the outer circumference of the guide 10 at a desired spiral angle. The open nut 20 is axially threaded and slides on the guide 10, and makes the inner spiral channel 2141 and the spiral channel 11 of the guide 10 correspond to each other and jointly form an inner ball channel.

開口護罩30軸向套設於軸向筒體21外週。開口護罩30具有內週壁31，內週壁31與軸向筒體21之外環壁215彼此對應並共同形成外螺旋滾珠通道。在本實施例中，為使滾珠循環組60能在外螺旋滾珠通道中循環滾動，係在軸向筒體21之外環壁215上形成外槽道2151。此時，外槽道2151與內週壁31相互搭配下即會對應形成外螺旋滾珠通道。The opening shield 30 is axially sleeved on the outer periphery of the axial cylinder 21. The opening shield 30 has an inner peripheral wall 31 that corresponds to the outer ring wall 215 of the axial cylinder 21 and forms an outer spiral ball channel together. In this embodiment, in order to enable the ball circulation group 60 to circulate and roll in the outer spiral ball channel, an outer groove 2151 is formed on the outer ring wall 215 of the axial cylinder 21. At this time, when the outer channel 2151 and the inner peripheral wall 31 cooperate with each other, an outer spiral ball channel is formed accordingly.

在其他實施態樣中，也可以透過於開口護罩30之內週壁31上形成內槽道，而軸向筒體21之外環壁215為平面，以使得內槽道與軸向筒體21之外環壁215共同形成外螺旋滾珠通道。又或者在其他實施態樣中，亦可以分別在軸向筒體21之外環壁215上具有外槽道2151及開口護罩30之內週壁31上具有相互對應的內槽道，當開口護罩30對應組設於軸向筒體21時，以使得內週壁31上的內槽道與外環壁215之外槽道2151共同形成外螺旋滾珠通道。In other embodiments, an inner channel can be formed on the inner peripheral wall 31 of the opening shield 30, and the outer ring wall 215 of the axial cylinder 21 is flat, so that the inner channel and the axial cylinder 21 The outer ring wall 215 together forms an outer spiral ball channel. Or in other embodiments, an outer channel 2151 may be provided on the outer ring wall 215 of the axial cylinder 21 and an inner channel 31 corresponding to the inner peripheral wall 31 of the opening shield 30, when the opening When the shroud 30 is correspondingly arranged on the axial cylinder 21, the inner channel on the inner peripheral wall 31 and the outer channel 2151 on the outer ring wall 215 together form an outer spiral ball channel.

另外，開口護罩30除了可以與軸向筒體21共同形成外螺旋滾珠通道，以使得滾珠循環組60在外槽道2151內滾動外，也可以提供防塵的功效。In addition, the opening shield 30 can form an outer spiral ball channel together with the axial cylinder 21, so that the ball circulation group 60 rolls in the outer channel 2151, and can also provide a dustproof effect.

在本實施例中，由圖2及圖3可見，內螺旋槽道2141及外槽道2151皆有複數個，但其僅為例示。實際可依需求僅設置一個內螺旋槽道2141及一個外槽道2151，但也可以設置二或多個內螺旋槽道2141及外槽道2151。在圖2及圖3中為使圖面清楚簡潔，僅標示其中一個做為例示。In this embodiment, as can be seen from FIGS. 2 and 3, there are a plurality of inner spiral channels 2141 and outer channels 2151, but they are only examples. Actually, only one inner spiral channel 2141 and one outer channel 2151 may be provided according to requirements, but two or more inner spiral channels 2141 and outer channels 2151 may also be provided. In FIGS. 2 and 3, to make the drawings clear and concise, only one of them is marked as an example.

接著，請同時參閱圖2至圖4，為能清楚表示各平面及軸向，在圖2中係提供相互垂直的XYZ三軸座標，以明確對空間中各視角之關係，後續亦將依此座標軸進行各圖面之說明。由圖2及圖4可見，導引件10之中心軸C係為沿X軸方向延伸。在此為方便說明，定義一對稱面為由中心軸C之一端觀看（例如由X軸之一端往X軸的正值方向觀看）開口護罩30或開口螺帽20時，使開口護罩30或開口螺帽20呈對稱之平面，亦即圖2中所示由XZ軸所形成之平面。另再定義沿著Z軸方向由圖面上的上方往下方觀看（往Z軸的負值方向觀看），即為俯視方向P。而與對稱面相互垂直並平行中心軸C之平面，亦即圖2中所示由XY軸所形成之平面，也是由俯視方向P觀察所形成之平面。。由圖4可見，在本實施例中作為外螺旋滾珠通道的外槽道2151為在外環壁215上螺旋環繞設置的外槽道2151，由俯視方向P即清楚可見每一外槽道2151的槽道方向為圖面上所示的斜向方向（由左上向右下傾斜，此外槽道2151的樣式即俗稱斜溝）。在其他實施態樣中，也可以是朝向另一方向傾斜，例如由右上向左下傾斜。當將外槽道2151及中心軸C以圖4所示之方向（即俯視方向P）進行投影而投影在平面上時（即XY軸所形成之平面上），在俯視方向P所形成之平面投影中，外槽道2151相對中心軸C斜向設置，也就是說二者之間所夾的角度A為非直角。Next, please refer to FIGS. 2 to 4 at the same time. In order to clearly show the planes and axes, the XYZ three-axis coordinates are provided perpendicular to each other in FIG. 2 to clarify the relationship between the perspectives in the space. The coordinate axis is used to explain each drawing. As can be seen from FIGS. 2 and 4, the central axis C of the guide 10 extends along the X-axis direction. For convenience of description, a symmetry plane is defined as viewed from one end of the central axis C (for example, viewed from one end of the X axis toward the positive direction of the X axis) when the opening shield 30 or the opening nut 20 is used, the opening shield 30 Or the open nut 20 has a symmetrical plane, that is, the plane formed by the XZ axis shown in FIG. 2. Another definition is to look down from the top of the drawing along the Z-axis direction (toward the negative direction of the Z-axis), which is the top view direction P. The plane perpendicular to the symmetry plane and parallel to the central axis C, that is, the plane formed by the XY axis shown in FIG. 2 is also the plane formed by the plan view P. . As can be seen from FIG. 4, in this embodiment, the outer groove 2151 as the outer spiral ball channel is an outer groove 2151 spirally arranged on the outer ring wall 215, and the outer groove 2151 is clearly visible from the top view direction P The direction of the channel is the oblique direction shown on the drawing (inclined from the upper left to the lower right, in addition, the style of the channel 2151 is commonly known as the inclined groove). In other embodiments, it may be inclined in another direction, for example, from the upper right to the lower left. When the outer channel 2151 and the central axis C are projected in the direction shown in FIG. 4 (that is, the plan view direction P) and projected on a plane (that is, on the plane formed by the XY axis), the plane formed in the plan view direction P In the projection, the outer channel 2151 is disposed obliquely with respect to the central axis C, which means that the angle A between the two is not a right angle.

進一步，由於內螺旋槽道2141與外槽道2151皆為螺旋設置，當二者為螺旋角相同的螺旋槽道時，即如本實施例所示，當內螺旋槽道2141及外槽道2151為相互平行設置時，由於二者所傾斜的角度相同，當滾珠循環組60於滾珠循環通道中滾動時，其負荷可較為連續並順暢滾動，而不會有過大的滾動角度轉換而使得滾動較不連續的問題。Further, since both the inner spiral channel 2141 and the outer channel 2151 are spirally arranged, when the two are spiral channels with the same spiral angle, that is, as shown in this embodiment, when the inner spiral channel 2141 and the outer channel 2151 When they are set parallel to each other, due to the same inclination angle, when the ball circulation group 60 rolls in the ball circulation channel, its load can be more continuous and smoothly roll, without excessive roll angle conversion, which makes the rolling more Discontinuity problem.

接著，請再參閱1至圖3及圖5，第一循環器40設置於第一軸向壁212。第一循環器40包括第一彎道41，第一彎道41的二端將分別對應連通內螺旋槽道2141（內滾珠通道）及外槽道2151（外螺旋滾珠通道）。第二循環器50設置於第二軸向壁213。第二循環器50包括第二彎道51，第二彎道51的二端分別對應連通內螺旋槽道2141（內滾珠通道）及外槽道2151（外螺旋滾珠通道）。Next, please refer again to FIGS. 1 to 3 and 5, the first circulator 40 is disposed on the first axial wall 212. The first circulator 40 includes a first curve 41, and the two ends of the first curve 41 will respectively communicate with the inner spiral channel 2141 (inner ball channel) and the outer channel 2151 (outer spiral ball channel). The second circulator 50 is disposed on the second axial wall 213. The second circulator 50 includes a second curve 51, and two ends of the second curve 51 respectively communicate with the inner spiral channel 2141 (inner ball channel) and the outer channel 2151 (outer spiral ball channel).

在本實施例中，由圖2及圖5可見，第一彎道41及第二彎道51皆有複數個，但其僅為例示。實際可依需求僅設置一個第一彎道41及一個第二彎道51，但也可以設置二或多個第一彎道41及第二彎道51。在圖2中為使圖面清楚簡潔，僅標示其中一個第一彎道41及第二彎道51做為例示。In this embodiment, as can be seen from FIGS. 2 and 5, there are a plurality of first curves 41 and second curves 51, but they are only examples. Actually, only one first curve 41 and one second curve 51 may be provided according to requirements, but two or more first curves 41 and second curve 51 may also be provided. In FIG. 2, in order to make the drawing clear and concise, only one of the first curve 41 and the second curve 51 is marked as an example.

其中，第一循環器40及第二循環器50可透過螺鎖、黏固或卡固的方式設置於第一軸向壁212及第二軸向壁213。若是透過螺鎖方式固定，當第一循環器40及第二循環器50因為長久使用有損耗時，則可以僅更換第一循環器40及第二循環器50即可。Wherein, the first circulator 40 and the second circulator 50 can be disposed on the first axial wall 212 and the second axial wall 213 by screwing, sticking or clamping. If it is fixed by a screw lock method, when the first circulator 40 and the second circulator 50 are worn out due to long-term use, only the first circulator 40 and the second circulator 50 may be replaced.

進一步，在本實施例中所示的第一循環器40及第二循環器50係為相同的結構，如此可使得製造時只需要製作一種態樣的元件，即可以同時做為第一循環器40及第二循環器50使用。當然，也可以視實際使用需求，使用具有不同結構的第一循環器40及第二循環器50。例如使用具有不同彎道數量的第一循環器40及第二循環器50，或是使用具有不同排列方式或排列間距的彎道的第一循環器40及第二循環器50。Further, the first circulator 40 and the second circulator 50 shown in this embodiment have the same structure, so that only one type of component needs to be manufactured during manufacturing, that is, they can be used as the first circulator at the same time 40 and the second circulator 50 are used. Of course, the first circulator 40 and the second circulator 50 with different structures may also be used depending on actual use requirements. For example, the first circulator 40 and the second circulator 50 with different numbers of bends are used, or the first circulator 40 and the second circulator 50 with bends having different arrangements or arrangement pitches are used.

另外，本實施中雖以各具有8個第一彎道41及第二彎道51的第一循環器40及第二循環器50為例示，但本新型不以此為限。在一些實施態樣中，第一循環器40及第二循環器50可以為例如具有二個彎道、較短的第一循環器40及第二循環器50。如此，當軸向筒體21較小型或軸向筒體21上所設置的內螺旋槽道2141及外槽道2151數量較少，例如僅為各一個時，則可以使用具有較少彎道的第一循環器40及第二循環器50。當需要更多個彎道的第一循環器40及第二循環器50時，則可以透過鎖固多個有著二個彎道的第一循環器40及第二循環器50，以適用於各種尺寸大小的需求。而不需要為了各種不同長度的軸向筒體21而製作各種對應長度的第一循環器40及第二循環器50。In this embodiment, although the first circulator 40 and the second circulator 50 each having eight first curves 41 and second curves 51 are taken as an example, the present invention is not limited to this. In some embodiments, the first circulator 40 and the second circulator 50 may be, for example, the first circulator 40 and the second circulator 50 that are shorter and have two curves. In this way, when the axial cylinder 21 is smaller or the number of the inner spiral channels 2141 and the outer channels 2151 provided on the axial cylinder 21 is small, for example, only one each, the one with fewer bends can be used The first circulator 40 and the second circulator 50. When the first circulator 40 and the second circulator 50 of more bends are needed, the first circulator 40 and the second circulator 50 with two bends can be locked to be suitable for various Size requirements. It is not necessary to manufacture the first circulator 40 and the second circulator 50 of various corresponding lengths for the axial cylinders 21 of various lengths.

由圖2可見每一滾珠循環組60包括複數鋼珠61。當如圖1所示完成第一循環器40及第二循環器50之組設後，設置於軸向筒體21第一軸向壁212上的第一循環器40之第一彎道41即會對應連通內滾珠通道及外螺旋滾珠通道，而設置於軸向筒體21第二軸向壁213上的第二循環器50之第二彎道51亦會對應連通內滾珠通道及外螺旋滾珠通道。內滾珠通道、第一彎道41、外螺旋滾珠通道及第二彎道51將共同形成滾珠循環通道。而滾珠循環組60中的所有鋼珠61即會在滾珠循環通道中循環滾動。It can be seen from FIG. 2 that each ball circulation group 60 includes a plurality of steel balls 61. After the assembly of the first circulator 40 and the second circulator 50 is completed as shown in FIG. 1, the first bend 41 of the first circulator 40 disposed on the first axial wall 212 of the axial cylinder 21 is It will correspond to the inner ball channel and the outer spiral ball channel, and the second bend 51 of the second circulator 50 provided on the second axial wall 213 of the axial cylinder 21 will also correspond to the inner ball channel and the outer spiral ball. aisle. The inner ball channel, the first curved path 41, the outer spiral ball channel and the second curved path 51 will together form a ball circulation channel. And all the steel balls 61 in the ball circulation group 60 will circulate and roll in the ball circulation channel.

藉由上述結構，透過在軸向筒體21上設置第一循環器40及第二循環器50，可以透過第一循環器40及第二循環器50來連通位於軸向筒體21內環壁214上的內螺旋槽道2141及外環壁215上的外槽道2151。同時，讓滾珠循環組60在滾動時由內螺旋槽道2141至外槽道2151的過程中能更為順暢。With the above structure, by providing the first circulator 40 and the second circulator 50 on the axial cylinder 21, the first circulator 40 and the second circulator 50 can communicate with the annular wall located inside the axial cylinder 21 The inner spiral channel 2141 on 214 and the outer channel 2151 on the outer ring wall 215. At the same time, the ball circulation group 60 can be smoother during the process of rolling from the inner spiral channel 2141 to the outer channel 2151 when rolling.

同時，上述雖僅說明單一滾珠循環通道，但如圖2及圖3所示，可以視需求設置所需要的滾珠循環通道數量，可以為一組，也可以為二或多組的滾珠循環通道。可視輕重載的需求而自由搭配，舉例來說，視需求可以僅使用兩組滾珠循環通道，或多組設置，或是在整個開口螺帽20及開口護罩30上以滿排設置，藉此達到輕重載之分。At the same time, although only a single ball circulation channel is described above, as shown in FIGS. 2 and 3, the number of ball circulation channels required may be set according to requirements, and may be one group or two or more groups of ball circulation channels. It can be freely matched according to the needs of light and heavy loads. For example, only two sets of ball circulation channels can be used, or multiple sets of settings, or a full row on the entire opening nut 20 and the opening shield 30 according to the needs. Reaching light and heavy loads.

接著，再請參閱圖2及圖3，在此係將一組滾珠循環組60分解出來做為示意，其亦用以表示滾珠循環組60之鋼珠61在滾珠循環通道中的設置狀況。滾珠循環組60會沿著內滾珠通道、第一彎道41、外螺旋滾珠通道及第二彎道51環繞成一圈環型，而在一個獨立的滾珠循環通道中循環滾動。實際應用時，如圖2及圖3中所示，可以設置複數組的滾珠循環組60，並且，使得每一組滾珠循環組60僅會在其所設置的滾珠循環通道中持續滾動。Next, please refer to FIG. 2 and FIG. 3 again. Here, a group of ball circulation groups 60 is exploded as a schematic, which is also used to indicate the installation status of the steel balls 61 of the ball circulation group 60 in the ball circulation channels. The ball circulation group 60 will wrap around the inner ball channel, the first curve 41, the outer spiral ball channel and the second curve 51 in a ring shape, and circulate and roll in an independent ball circulation channel. In practical applications, as shown in FIG. 2 and FIG. 3, a plurality of sets of ball circulation groups 60 may be set, and each group of ball circulation groups 60 will only continue to roll in the ball circulation channels provided by it.

藉由上述結構，由於開口螺帽20的軸向筒體21上具有軸向開口211，當開口螺帽20於導引件10上移動時，即使在導引件10下方設置有額外的支撐組件（例如支撐座，圖未示），開口螺帽20在通過支撐組件之處可藉由軸向開口211通過支撐組件，而不會與支撐組件相互干涉。藉此，不需要在支撐組件上設置退位機構，使得支撐組件在一般圓筒狀滾珠螺帽要經過時進行退位遠離導引件10。並且在開口螺帽20通過支撐組件處時，支撐組件可維持支撐導引件10的狀態，而不會造成因為導引件10下垂變形，影響實際在製程中應用時製造精度的問題。With the above structure, since the axial barrel 21 of the split nut 20 has the axial opening 211, when the split nut 20 moves on the guide 10, even if an additional support assembly is provided under the guide 10 (For example, a support base, not shown), the opening nut 20 can pass through the support assembly through the axial opening 211 where it passes through the support assembly without interfering with the support assembly. Thereby, it is not necessary to provide a dislocation mechanism on the support assembly, so that the support assembly is dislocated away from the guide 10 when the generally cylindrical ball nut is going to pass. In addition, when the split nut 20 passes through the support assembly, the support assembly can maintain the state of supporting the guide 10 without causing a problem that the guide 10 sags and deforms, which affects the manufacturing accuracy when actually applied in the manufacturing process.

在本實施例中，係由一個內滾珠通道、一個第一彎道41、一個外螺旋滾珠通道及一個第二彎道51共同形成一個滾珠循環通道。而一組滾珠循環組60中的所有鋼珠61即會在一個滾珠循環通道中循環滾動。而如圖2及圖3可見，本實施例中為複數個滾珠循環通道及複數組滾珠循環組60，分別對應組設，各組滾珠循環組60是在所設置的滾珠循環通道中獨立循環滾動。In this embodiment, an inner ball channel, a first curved path 41, an outer spiral ball channel and a second curved path 51 together form a ball circulation channel. All the steel balls 61 in a group of ball circulation groups 60 will circulate and roll in a ball circulation channel. As can be seen in FIGS. 2 and 3, in this embodiment, there are a plurality of ball circulation channels and a complex array of ball circulation groups 60, respectively corresponding to the group setting, and each group of ball circulation groups 60 is independently circulating and rolling in the set ball circulation channels .

在其他實施態樣中，可以使得第一彎道41的二端分別對應連通一個內滾珠通道及另一個外螺旋滾珠通道，第二彎道51的二端分別對應連通一個內滾珠通道及另一個外螺旋滾珠通道。舉例來說，若將依序設置的內螺旋槽道2141（內滾珠通道）由一端開始排序為第一道、第二道…第N道，而依序設置的外槽道2151（外螺旋滾珠通道）亦由同一端開始排序為第一道、第二道…第N道。第一彎道41的一端可以連接位於第一道的外槽道2151，另外一端可以連接位於第二道的內螺旋槽道2141，而不是連接至同樣是第一道的內螺旋槽道2141。而第二彎道51的二端則對應第一彎道41連通方式，一端連接位於第一道的外槽道2151，另外一端連接位於第二道的內螺旋槽道2141。這可以透過調整第一彎道41及第二彎道51的傾斜度來實現。In other embodiments, the two ends of the first curved path 41 respectively correspond to an inner ball channel and the other outer spiral ball channel, and the two ends of the second curved path 51 respectively correspond to an inner ball channel and the other External spiral ball channel. For example, if the sequentially arranged inner spiral channels 2141 (inner ball channels) are ordered from one end into the first, second, ... Nth channels, and the outer channels 2151 (outer spiral balls) Channel) is also sequenced from the same end to the first channel, the second channel... Nth channel. One end of the first curve 41 may be connected to the outer channel 2151 located in the first channel, and the other end may be connected to the inner spiral channel 2141 located in the second channel instead of being connected to the inner spiral channel 2141 which is also the first channel. The two ends of the second curve 51 correspond to the communication manner of the first curve 41. One end is connected to the outer channel 2151 located in the first channel, and the other end is connected to the inner spiral channel 2141 located in the second channel. This can be achieved by adjusting the inclination of the first curve 41 and the second curve 51.

舉例來說，當第一彎道41以斜向設置，且第二彎道51亦為斜向設置時，藉由調整第一彎道41及第二彎道51的傾斜度，則可以使得內螺旋槽道2141與不同道的外槽道2151相連通，以達成跳道的效果。For example, when the first curve 41 is arranged obliquely and the second curve 51 is also arranged obliquely, by adjusting the inclination of the first curve 41 and the second curve 51, the inner curve can be made The spiral channel 2141 communicates with outer channels 2151 of different channels to achieve the effect of jumping.

如此，即由第二道內滾珠通道、一個第一彎道41、第一道外螺旋滾珠通道及一個第二彎道51共同形成一個滾珠循環通道。設置於滾珠循環通道中的滾珠循環組60，即會在第二道內滾珠通道、一個第一彎道41、第一道外螺旋滾珠通道及一個第二彎道51中循環滾動。如此，藉由不同循環器的設置，可以讓不同的內滾珠通道與外螺旋滾珠通道進行搭配，以形成不同組合的獨立滾珠循環通道。藉此，使用者可以靈活搭配重載或輕載。In this way, the second inner ball channel, a first curved path 41, the first outer spiral ball channel and a second curved path 51 together form a ball circulation channel. The ball circulation group 60 provided in the ball circulation channel will circulate and roll in the second inner ball channel, a first curved path 41, the first outer spiral ball channel and a second curved path 51. In this way, through the setting of different circulators, different inner ball channels and outer spiral ball channels can be matched to form different combinations of independent ball circulation channels. In this way, users can flexibly match heavy or light loads.

在本實施例中，由於內螺旋槽道2141及外槽道2151為螺旋角相同的螺旋槽道，因此第一彎道41與第一循環器40之短邊相互平行設置，且第二彎道51與第二循環器50之短邊相互平行設置。由於第一循環器40及第二循環器50二個係相同結構，在圖5中僅以第二循環器50為例示做說明。由圖5的俯視圖可更清楚的了解，當第二循環器50的第二彎道51為複數個，各第二彎道51彼此平行設置，且由上而下直向設置，即會平行第二循環器50之短邊設置。同樣地，第一彎道41為複數個，各第一彎道41將會彼此平行設置。若將第一循環器40移動至與第二循環器50相同視角，即開口在上時，第一彎道41亦是由上而下直向設置，即會平行第一循環器40之短邊設置。藉此，在第一循環器40上要形成第一彎道41，或在第二循環器50上要形成第二彎道51時會更為方便定位所要銑切的方向。或者在透過射出成型製造第一循環器40或第二循環器50時，模具的製造與脫膜會較為容易。In this embodiment, since the inner spiral channel 2141 and the outer channel 2151 are spiral channels with the same spiral angle, the short sides of the first bend 41 and the first circulator 40 are parallel to each other, and the second bend The short sides of 51 and the second circulator 50 are arranged parallel to each other. Since the first circulator 40 and the second circulator 50 have the same structure, only the second circulator 50 is taken as an example for illustration in FIG. 5. It can be more clearly understood from the top view of FIG. 5 that when there are a plurality of second bends 51 of the second circulator 50, the second bends 51 are arranged parallel to each other, and are arranged vertically from top to bottom, that is, parallel to the first The short side of the second circulator 50 is set. Similarly, there are a plurality of first curves 41, and each first curve 41 will be arranged parallel to each other. If the first circulator 40 is moved to the same angle of view as the second circulator 50, that is, when the opening is up, the first curve 41 is also arranged vertically from top to bottom, that is, parallel to the short side of the first circulator 40 Settings. In this way, when the first bend 41 is to be formed on the first circulator 40 or the second bend 51 is to be formed on the second circulator 50, it is more convenient to locate the direction to be milled. Or, when the first circulator 40 or the second circulator 50 is manufactured by injection molding, it is easier to manufacture and remove the mold.

另外，在本實施例中，滾珠循環導引裝置中所設置的鋼珠61不需要另外設置滾珠保持器，即可在由導引件10、開口螺帽20、開口護罩30、第一循環器40以及第二循環器50所形成的滾珠循環通道之限位下，在各獨立的滾珠循環通道中滾動，而不會掉出滾珠循環通道。但在其他實施態樣中，也可以透過設置滾珠保持器將滾珠循環組60中的多個鋼珠61進行串聯。In addition, in this embodiment, the steel ball 61 provided in the ball circulation guide device does not need to be additionally provided with a ball retainer, that is, the guide 10, the opening nut 20, the opening shield 30, the first circulator Under the limit of the ball circulation channel formed by 40 and the second circulator 50, it rolls in each independent ball circulation channel without falling out of the ball circulation channel. However, in other embodiments, a plurality of steel balls 61 in the ball circulation group 60 may be connected in series by providing a ball retainer.

雖然本新型以前述之實施例揭露如上，然其並非用以限定本新型，任何熟習相像技術者，在不脫離本新型之精神和範圍內，當可作些許之更動與潤飾，因此本新型之專利保護範圍須視本說明書所附之申請專利範圍所界定者為準。Although the present invention is disclosed as above with the foregoing embodiments, it is not intended to limit the present invention. Anyone who is familiar with the similar technology can make some changes and retouching without departing from the spirit and scope of the present invention. The scope of patent protection shall be determined by the scope of the patent application attached to this specification.

10:導引件 11:螺旋槽道 20:開口螺帽 21:軸向筒體 211:軸向開口 212:第一軸向壁 213:第二軸向壁 214:內環壁 2141:內螺旋槽道 215:外環壁 2151:外槽道 30:開口護罩 31:內週壁 40:第一循環器 41:第一彎道 50:第二循環器 51:第二彎道 60:滾珠循環組 61:鋼珠 A:角度 C:中心軸 P:俯視方向 10: Guide 11: Spiral channel 20: Open nut 21: Axial cylinder 211: Axial opening 212: first axial wall 213: Second axial wall 214: inner ring wall 2141: inner spiral channel 215: outer ring wall 2151: Outer channel 30: opening guard 31: Inner peripheral wall 40: The first circulator 41: First corner 50: second circulator 51: Second corner 60: Ball circulation group 61: Steel Ball A: Angle C: central axis P: Overlooking direction

[圖1] 為本新型所述一實施例的滾珠循環導引裝置之立體圖； [圖2] 為本新型所述一實施例的滾珠循環導引裝置之分解圖； [圖3] 為本新型所述一實施例的滾珠循環導引裝置另一視角之分解圖； [圖4] 為本新型所述一實施例的開口螺帽之俯視圖；以及 [圖5] 為本新型所述一實施例的第二循環器之俯視圖。 [Figure 1] This is a perspective view of a ball circulation guide device according to an embodiment of the present invention; [FIG. 2] This is an exploded view of the ball circulation guide device according to an embodiment of the present invention; [FIG. 3] This is an exploded view from another perspective of the ball circulation guide device according to an embodiment of the present invention; [FIG. 4] This is a top view of an open nut according to an embodiment of the present invention; and [FIG. 5] This is a top view of a second circulator according to an embodiment of the present invention.

10:導引件 10: Guide

11:螺旋槽道 11: Spiral channel

20:開口螺帽 20: Open nut

21:軸向筒體 21: Axial cylinder

211:軸向開口 211: Axial opening

213:第二軸向壁 213: Second axial wall

214:內環壁 214: inner ring wall

2141:內螺旋槽道 2141: inner spiral channel

215:外環壁 215: outer ring wall

2151:外槽道 2151: Outer channel

30:開口護罩 30: opening guard

31:內週壁 31: Inner peripheral wall

40:第一循環器 40: The first circulator

41:第一彎道 41: First corner

50:第二循環器 50: second circulator

51:第二彎道 51: Second corner

60:滾珠循環組 60: Ball circulation group

61:鋼珠 61: Steel Ball

C:中心軸 C: central axis

P:俯視方向 P: Overlooking direction

Claims

一種滾珠循環導引裝置，包括：一導引件，具有一中心軸以及一螺旋槽道，該螺旋槽道環繞設置於該導引件的外環週；一開口螺帽，穿設滑移於該導引件上，該開口螺帽包括一軸向筒體，該軸向筒體具有一軸向開口，該軸向筒體並於該軸向開口之相對二側設有一第一軸向壁及一第二軸向壁，該軸向筒體包括一內環壁及一外環壁，該內環壁具有一內螺旋槽道，該內螺旋槽道與該導引件之該螺旋槽道彼此對應並共同形成一內滾珠通道；一開口護罩，同軸套設於該軸向筒體外週，該開口護罩具有一內週壁，該內週壁與該軸向筒體之該外環壁彼此對應並共同形成一外螺旋滾珠通道，該外螺旋滾珠通道於一平面投影中，該外螺旋滾珠通道相對該中心軸斜向設置，該平面係與由該中心軸之一端觀看該開口護罩時之一對稱面相互垂直並平行該中心軸；一第一循環器，設置於該第一軸向壁，該第一循環器包括一第一彎道，該第一彎道的二端分別對應連通該內滾珠通道及該外螺旋滾珠通道；一第二循環器，設置於該第二軸向壁，該第二循環器包括一第二彎道，該第二彎道的二端分別對應連通該內滾珠通道及該外螺旋滾珠通道；以及一滾珠循環組，包括複數鋼珠，其中，該內滾珠通道、該第一彎道、該外螺旋滾珠通道及該第二彎道共同形成一滾珠循環通道，該滾珠循環組滾動於該滾珠循環通道中。 A ball circulation guide device, including: A guide member having a central axis and a spiral channel, the spiral channel surrounding the outer circumference of the guide member; An open nut is slipped on the guide member, the open nut includes an axial cylinder, the axial cylinder has an axial opening, and the axial cylinder opens in the axial direction A first axial wall and a second axial wall are provided on opposite sides. The axial cylinder includes an inner ring wall and an outer ring wall. The inner ring wall has an inner spiral channel and the inner spiral channel Corresponding to the spiral groove of the guide member and forming an inner ball channel together; An opening shield is coaxially sleeved on the outer periphery of the axial cylinder, the opening shield has an inner peripheral wall, the inner peripheral wall and the outer ring wall of the axial cylinder correspond to each other and jointly form an outer spiral ball Channel, the outer spiral ball channel is in a plane projection, the outer spiral ball channel is disposed obliquely with respect to the central axis, the plane is perpendicular to and parallel to a symmetry plane when the opening shield is viewed from one end of the central axis The central axis A first circulator disposed on the first axial wall, the first circulator includes a first bend, and the two ends of the first bend respectively communicate with the inner ball channel and the outer spiral ball channel; A second circulator disposed on the second axial wall, the second circulator includes a second bend, and two ends of the second bend respectively communicate with the inner ball channel and the outer spiral ball channel; and A ball circulation group includes a plurality of steel balls, wherein the inner ball channel, the first bend, the outer spiral ball channel and the second bend together form a ball circulation channel, and the ball circulation group rolls on the ball circulation channel in.

如請求項1所述之滾珠循環導引裝置，其中該內週壁表面與該外環壁更形成另一外螺旋滾珠通道，該第一彎道的二端分別對應連通該內滾珠通道及該另一外螺旋滾珠通道，該第二彎道的二端分別對應連通該內滾珠通道及該另一外螺旋滾珠通道，該內滾珠通道、該第一彎道、該另一外螺旋滾珠通道及該第二彎道共同形成另一滾珠循環通道，該滾珠循環組滾動於該另一滾珠循環通道中。The ball circulation guiding device according to claim 1, wherein the inner peripheral wall surface and the outer ring wall further form another outer spiral ball channel, and the two ends of the first bend respectively correspond to the inner ball channel and the In another outer spiral ball channel, two ends of the second curved channel respectively communicate with the inner ball channel and the other outer spiral ball channel, the inner ball channel, the first curved channel, the other outer spiral ball channel and The second curved path jointly forms another ball circulation channel, and the ball circulation group rolls in the other ball circulation channel.

如請求項1所述之滾珠循環導引裝置，其中該第一彎道相對於該第一循環器之短邊斜向設置，且該第二彎道相對於該第二循環器之短邊斜向設置。The ball circulation guide device according to claim 1, wherein the first curve is inclined to the short side of the first circulator, and the second curve is inclined to the short side of the second circulator To set.

如請求項1所述之滾珠循環導引裝置，其中該第一彎道與該第一循環器之短邊相互平行設置，且該第二彎道與該第二循環器之短邊相互平行設置。The ball circulation guide device according to claim 1, wherein the first curved path and the short side of the first circulator are arranged parallel to each other, and the second curved path and the short side of the second circulator are arranged parallel to each other .

如請求項1所述之滾珠循環導引裝置，其中該第一循環器的該第一彎道為複數個，各該些第一彎道彼此平行設置，該第二循環器的該第二彎道為複數個，各該些第二彎道彼此平行設置。The ball circulation guide device according to claim 1, wherein the first bend of the first circulator is plural, each of the first bends is arranged parallel to each other, and the second bend of the second circulator There are a plurality of lanes, and the second bends are arranged parallel to each other.

如請求項1所述之滾珠循環導引裝置，更包括一滾珠保持器，該些鋼珠係由該滾珠保持器串聯。The ball circulation guide device according to claim 1, further comprising a ball retainer, the steel balls are connected in series by the ball retainer.

如請求項1所述之滾珠循環導引裝置，其中該軸向筒體之該外環壁具有一外槽道，以與該內週壁共同形成該外螺旋滾珠通道。The ball circulation guide device according to claim 1, wherein the outer ring wall of the axial cylinder has an outer channel to form the outer spiral ball channel together with the inner peripheral wall.

如請求項7所述之滾珠循環導引裝置，其中該開口護罩之該內週壁具有一內槽道，並對應該外槽道設置，以使該外槽道與該內槽道對應形成該外螺旋滾珠通道。The ball circulation guide device according to claim 7, wherein the inner peripheral wall of the opening shield has an inner channel, and is corresponding to the outer channel, so that the outer channel corresponds to the inner channel The outer spiral ball channel.

如請求項1所述之滾珠循環導引裝置，其中該開口護罩之該內週壁具有一內槽道，以與該軸向筒體之該外環壁共同形成該外螺旋滾珠通道。The ball circulation guide device according to claim 1, wherein the inner peripheral wall of the opening shield has an inner channel to form the outer spiral ball channel together with the outer ring wall of the axial cylinder.