九、發明說明： 【發明所屬之技術領域】 本發明係關於一種滾珠滑執，尤指一種裝設有滚 珠架定位裝置的滚珠滑執。 【先前技術】 為減小滑軌軌體間相對滑動的摩擦力，很多滑執 在其執體間設有包括複數滾珠的滾珠架，該等滾珠分 別裝設於滾珠架上的對應裝設孔而排列成行，以使不 同軌體間的相對滑動更為順暢，同時減小相互摩擦對 滑軌的損傷。如三段式滑執的内執與中軌之間、中執 與外執之間，都可設置滚珠架，該等滾珠架可以和插 入其内的執體同步滑動。但是，當不同軌體分離、相 應的執體需重新插入對應的滾珠架時，如果滾珠架未 定位，相應軌體則難以準確快速地插入，且在插入過 程中可能損壞滚珠架。 【發明内容】 鑒於以上内容，有必要提供一種裝設有滾珠架定 位裝置的滾珠滑軌。 一種滚珠滑執，包括一第一軌、一第二執及一設 於該第一執和該第二軌之間的滚珠架，該滾珠架和第 一軌可滑動地收容於該第二執，該滾珠滑執進一步包 括一可滑動地裝設於第二執的定位件，該定位件包括 一定位部，該滚珠架上開設一卡扣孔，該定位件的定 位部可卡入該滚珠架的卡扣孔將該滚珠架於該第二 軌定位。 相較習知技術，該滾珠架可被該定位件定位於該 第二執，從而方便該第一軌的插入，且不易損壞滚珠 架。 【實施方式】 請參閱圖1至圖3，為本發明滚珠滑執較佳實施 方式，其包括一滚珠架20、一第一執40、一套設於 第一執40的第二軌60、一套設於第二軌60的第三執 70和一定位件80。滚珠架20設於第一軌40和第二 軌60之間，用於辅助第一執40相對於第二軌60的 滑動；定位件80裝設於第二執60，用於將滚珠架20 定位在第二軌60上。 定位件80為塑件或由其他彈性材料製成，其包 括一體成型的一底座82及一抵頂部86。底座82大致 為長方體，其靠近一側壁820處開設一開槽822，側 壁820上開設一與開槽822連通的凹陷826;侧壁820 鄰近凹陷826的一端設一表面為弧形的卡塊828，側 壁820上鄰近凹陷826的底部處向外凸設一凸塊 830，凸塊830的上表面為平面並與凹陷826的底部 平齊，凸塊830的下表面為斜面；底座82上與側壁 820相對的侧壁832向外凸設一與凸塊830對稱的凸 塊834，凸塊834的上表面為平面，下表面為斜面； 底座82的底部的兩端分別設一缺口 835、836，底座 82鄰近缺口 835的一端形成一定位部838。抵頂部86 成型於底座82的頂部，為一平行四邊形塊體，抵頂 部86包括兩端面860及兩側面862、864，兩端面860 分別與底座82的兩端平行，該兩側面862、864為互 相平行的斜面且分別為一鎖固侧面862和一解鎖侧面 864。 滚珠架20包括一腹板22及兩側臂24、26，兩側 臂24、26分別自腹板22的兩側邊向同一方向彎折。 腹板22包括兩侧端220、222及一凸出板224，凸出 板224連接於兩側端220、222之間並平行偏移。侧 端220比側端222略長，與側端220連接的側臂24 同樣略長於側臂26。側端220比侧端222長出的部分 為一卡扣部226，卡扣部226上開設一卡扣孔228， 定位件80的定位部838可對應卡入卡扣孔228。兩側 臂24、26分別裝設有複數滚珠240、260。 第一軌40包括一腹板42及兩侧臂44，兩侧臂 44分別自腹板42的兩侧邊同向彎折。腹板42上設彼 此錯開的一鎖固柱420和一解鎖柱422。每一側臂44 向相對側臂44的方向凹陷，從而在每一側臂44的外 側形成一沿第一執40縱長方向的滑道440。 第二軌60用於收容滚珠架20和第一執40,其包 括一腹板62及兩側臂64，兩側臂64分別自腹板62 的兩側邊同向彎折。腹板62包括兩側端620、622及 一凸出板624，凸出板624連接於兩侧端620、622之 間並平行偏移；凸出板624的一端開設一截斷凸出板 的開口 626,開口 626的一邊緣開設兩卡槽628、630。 每一侧臂64的内側彎折形成一内滑道640。第二軌 60上鄰近凸出板624設有開口 626的一端裝設一擋止 件66。擋止件66的兩側臂660分別收容於侧臂64的 内滑道640内，每一側臂660的端部形成一擋止面 662。 第三軌70用於收容第二執60，其包括一腹板及 兩側臂74，兩側臂74分別自腹板的兩侧邊同向彎折， 第二軌60可滑動地收容於第三軌70的兩侧臂74之 間。第二執60和第三執70分別對應設有滑道以利於 二者之間的相對滑動，第二執60和第三執70的對應 滑道之間還可以設置滚珠架或其他助滑結構。 請繼續參閱圖4，安裝時，將滚珠架20滑動裝入 第二軌60，其滚珠240、260分別接觸第二軌60的侧 臂64的内滑道640並在其中滑動。將定位件80的底 部對準第二軌60的凸出板624的開口 626，並用力下 壓定位件80，定位件80的底座82受力向其開槽822 内變形，兩凸塊830、834的斜面分別沿第二執60的 開口 626的兩側邊下滑，直至凸塊830、834越過開 口 626的兩側邊，定位件80的抵頂部86的底面抵頂 於第二軌60的凸出板624的頂面，定位件80的底座 82在自身回復力作用下恢復原狀，兩凸塊830、834 的上表面分別抵頂於第二執60的凸出板624的底 面，從而將凸出板624的開口 626的兩邊緣分別夾持 於定位件80的抵頂部86和凸塊830、834之間，定 位件80即被可滑動地裝設於凸出板624 ;此時，定位 件80的卡塊828卡入第二軌60的凸出板624的卡槽 628。向靠近定位件80的方向滑動滚珠架20，直至滚 珠架20的卡扣部226的端部抵頂於擋止件66的擋止 面662而被擋止，滚珠架20停止滑動。推動抵頂部 86以滑動定位件80，直至定位件80的定位部838卡 入卡扣部226的卡扣孔228而將滚珠架20定位；此 時，定位件80的卡塊828卡入第二軌60的卡槽630 以避免定位件80向解鎖的方向滑動。 請參閱圖5，將第一軌40插入擋止件66的兩側 臂660之間，並推動其向縮入的方向滑動，由於擋止 件66的侧臂660高於滚珠架20的卡扣部226的端 部，第一軌40很容易插入滚珠架20而不會抵頂以至 損壞滚珠架20。當第一軌40插入滚珠架20後，第一 軌40的滑道440分別接觸滚珠架20的滾珠240、260, 該等滚珠240、260可輔助第一軌40在第二軌60内 的滑動。繼續推動第一軌40縮入，直至第一執40的 解鎖柱422抵頂於定位件80的解鎖侧面864並沿解 鎖側面864滑動，而推動定位件80向解鎖，即靠近 第二軌60的侧端622的方向滑動；定位件80的定位 1322861 部838自滚珠架20的卡扣孔228脫出，滾珠架20即 相對第二執60解鎖而與第一軌40—起向縮入的方向 滑動；此時，定位件80的卡塊828卡入第二軌60的 卡槽628而停止滑動，定位於第二軌60。 請參閱圖6，當第一執40自第二執60抽出時， 滚珠架20隨第一軌40滑動，直至滾珠架20的卡扣 部226的端部抵頂於擋止件66的擋止面662而被擋 止，滚珠架20停止滑動。繼續向抽出的方向拉動第 一軌40，直至第一執40的鎖固柱420抵頂於定位件 80的鎖固侧面862並沿鎖固侧面862滑動，而推動定 位件80向靠近第二執60的侧端620的方向滑動；定 位件80的定位部838卡入卡扣部226的卡扣孔228 而再次將滚珠架20定位；此時，定位件80的卡塊828 卡入第二軌60的卡槽630以避免定位件80向解鎖的 方向滑動。繼續拉動第一執40,可將其完全自第二執 60内抽出。 綜上所述，本發明符合發明專利要件，爰 依法提出專利申請。惟，以上所述者僅為本發 明之較佳實施例，舉凡熟悉本案技藝之人士， 在爰依本發明精神所作之等效修飾或變化，皆 應涵蓋於以下之申請專利範圍内。 【圖式簡單說明】 圖1係本發明滾珠滑軌較佳實施方式的部分分解 11 1322861 圖。 圖2係本發明滚珠滑執較佳實施方式的定位件的 放大圖。 圖3係本發明滚珠滑執較佳實施方式的定位件的 另一方向的放大圖。 圖4係本發明滾珠滑執較佳實施方式的一端的立 體組合圖，其中第一執從第二軌中抽出而未 示出。 圖5係本發明滚珠滑執較佳實施方式中的滚珠架 的解鎖過程示意圖。 圖6係本發明滚珠滑軌較佳實施方式中的滚珠架 的定位過程示意圖。 【主要元件符號說明】 滚珠架 20 腹板 22、42、 側端 220 > 222 > 620 ' 622 凸出板 224 、 624 卡扣部 226 卡扣孔 228 側臂 24 、 26 ' 44 ' 64 、 74 、 660 滾珠 240、260 第一軌 40 鎖固柱 420 解鎖柱 422 滑道 440 第二軌 60 開口 626 卡槽 628 、 630 内滑道 640 擋止件 66 12 1322861 擔止面 662 第三軌 70 定位件 80 底座 82 側壁 820 、 832 開槽 822 凹陷 826 卡塊 828 凸塊 830 、 834 缺口 835 ' 836 定位部 838 抵頂部 86 端面 860 鎖固側面 862 解鎖側面 864 13IX. INSTRUCTIONS OF THE INVENTION: TECHNICAL FIELD The present invention relates to a ball slide, and more particularly to a ball slide which is provided with a ball stand positioning device. [Prior Art] In order to reduce the frictional force of the relative sliding between the rail rails, many slides are provided with a ball cage including a plurality of balls between the bodies, and the balls are respectively mounted on the corresponding mounting holes of the ball racks. They are arranged in a row to make the relative sliding between the different rail bodies smoother, and at the same time reduce the damage of the rails by mutual friction. For example, between the inner and middle rails of the three-segment slide, between the middle and the outer, the ball holders can be arranged, and the ball holders can slide synchronously with the inserts inserted therein. However, when the different rail bodies are separated and the corresponding body needs to be reinserted into the corresponding ball holder, if the ball holder is not positioned, the corresponding rail body is difficult to insert accurately and quickly, and the ball holder may be damaged during the insertion process. SUMMARY OF THE INVENTION In view of the above, it is necessary to provide a ball slide rail equipped with a ball holder positioning device. A ball slide, comprising a first rail, a second handle and a ball cage disposed between the first handle and the second rail, the ball rack and the first rail being slidably received in the second hold The ball slider further includes a positioning member slidably mounted on the second holder, the positioning member includes a positioning portion, and a locking hole is defined in the ball holder, and the positioning portion of the positioning member can be engaged with the ball A snap hole of the frame positions the ball holder on the second rail. Compared with the prior art, the ball holder can be positioned by the positioning member on the second holder, thereby facilitating the insertion of the first rail and not easily damaging the ball holder. [Embodiment] Please refer to FIG. 1 to FIG. 3, which is a preferred embodiment of a ball slideper according to the present invention. The ball bearing frame 20 includes a ball holder 20, a first handle 40, and a second track 60 disposed on the first handle 40. A set of third handles 70 and a positioning member 80 are disposed on the second rail 60. The ball holder 20 is disposed between the first rail 40 and the second rail 60 for assisting the sliding of the first holder 40 relative to the second rail 60; the positioning member 80 is mounted on the second holder 60 for the ball holder 20 Positioned on the second rail 60. The positioning member 80 is a plastic member or made of other elastic material, and includes a base 82 integrally formed and a top portion 86. The base 82 is substantially a rectangular parallelepiped. A slot 822 is defined in the side wall 820. A recess 826 is defined in the side wall 820. The sidewall 820 is adjacent to the end of the recess 826 and has a curved block 828. A protrusion 830 is protruded outwardly from the bottom of the sidewall 820 adjacent to the recess 826. The upper surface of the bump 830 is flat and flush with the bottom of the recess 826. The lower surface of the bump 830 is a slope; the base 82 and the sidewall The opposite side wall 832 of the 820 protrudes outwardly from a protrusion 834 which is symmetric with the protrusion 830. The upper surface of the protrusion 834 is a flat surface, and the lower surface is a sloped surface. The two ends of the bottom portion of the base 82 are respectively provided with a notch 835 and 836. A positioning portion 838 is formed on the base 82 adjacent to one end of the notch 835. The top 86 is formed on the top of the base 82 as a parallelogram block. The abutting top 86 includes two end faces 860 and two sides 862 and 864. The end faces 860 are respectively parallel to the two ends of the base 82. The two sides 862 and 864 are The mutually parallel slopes are respectively a locking side 862 and an unlocking side 864. The ball holder 20 includes a web 22 and side arms 24, 26, and the side arms 24, 26 are bent in the same direction from both side edges of the web 22, respectively. The web 22 includes two side ends 220, 222 and a raised plate 224 that is coupled between the two side ends 220, 222 and offset in parallel. The side end 220 is slightly longer than the side end 222, and the side arm 24 connected to the side end 220 is also slightly longer than the side arm 26. A portion of the side end 220 that extends from the side end 222 is a latching portion 226. A latching hole 228 is defined in the latching portion 226. The positioning portion 838 of the positioning member 80 can be correspondingly engaged with the latching hole 228. The two arms 24, 26 are respectively provided with a plurality of balls 240, 260. The first rail 40 includes a web 42 and side arms 44 that are bent from the sides of the web 42 in the same direction. The web 42 is provided with a locking cylinder 420 and an unlocking post 422 which are staggered from each other. Each side arm 44 is recessed in the direction of the opposite side arm 44 such that a slide 440 along the longitudinal direction of the first handle 40 is formed on the outer side of each side arm 44. The second rail 60 is for receiving the ball holder 20 and the first holder 40. The second rail 60 includes a web 62 and two side arms 64. The two side arms 64 are bent in the same direction from the side edges of the web 62, respectively. The web 62 includes two side ends 620, 622 and a protruding plate 624. The protruding plate 624 is connected between the two side ends 620, 622 and is offset in parallel. One end of the protruding plate 624 defines an opening for cutting off the protruding plate. 626, one edge of the opening 626 defines two card slots 628, 630. The inner side of each side arm 64 is bent to form an inner slide 640. An end of the second rail 60 adjacent to the protruding plate 624 having the opening 626 is provided with a stopper 66. The two side arms 660 of the stopper 66 are respectively received in the inner slide 640 of the side arm 64, and the end of each side arm 660 forms a stop surface 662. The third rail 70 is configured to receive the second handle 60. The third rail 60 includes a web and two side arms 74. The two side arms 74 are respectively bent from the two sides of the web, and the second rail 60 is slidably received in the third. Between the arms 74 on either side of the rail 70. The second holder 60 and the third holder 70 respectively have corresponding slides to facilitate relative sliding between the two, and a ball holder or other sliding structure may be disposed between the corresponding slides of the second holder 60 and the third holder 70. . Referring to Figure 4, during installation, the ball holder 20 is slidably loaded into the second rail 60, and the balls 240, 260 respectively contact and slide in the inner slide 640 of the side arm 64 of the second rail 60. The bottom of the positioning member 80 is aligned with the opening 626 of the protruding plate 624 of the second rail 60, and the positioning member 80 is pressed down. The base 82 of the positioning member 80 is forced to deform into the slot 822 thereof, and the two protrusions 830, The slopes of the 834 are respectively slid along the sides of the opening 626 of the second handle 60 until the bumps 830, 834 pass over the two sides of the opening 626, and the bottom surface of the abutting portion 86 of the positioning member 80 abuts against the convexity of the second rail 60. The top surface of the ejecting plate 624 is restored to the original shape by the restoring force of the positioning member 80. The upper surfaces of the two protrusions 830 and 834 respectively abut against the bottom surface of the protruding plate 624 of the second handle 60, thereby protruding. The two edges of the opening 626 of the ejecting plate 624 are respectively clamped between the abutting top 86 of the positioning member 80 and the bumps 830, 834, and the positioning member 80 is slidably mounted on the protruding plate 624; at this time, the positioning member The block 828 of the 80 snaps into the slot 628 of the raised plate 624 of the second rail 60. The ball holder 20 is slid in the direction toward the positioning member 80 until the end portion of the hook portion 226 of the ball holder 20 abuts against the stopper surface 662 of the stopper 66, and the ball holder 20 stops sliding. Pushing the top 86 to slide the positioning member 80 until the positioning portion 838 of the positioning member 80 snaps into the locking hole 228 of the locking portion 226 to position the ball holder 20; at this time, the block 828 of the positioning member 80 is engaged in the second position. The card slot 630 of the rail 60 prevents the positioning member 80 from sliding in the unlocking direction. Referring to FIG. 5, the first rail 40 is inserted between the two arms 660 of the stopper 66 and urged to slide in the retracting direction, since the side arm 660 of the stopper 66 is higher than the buckle of the ball holder 20. At the end of the portion 226, the first rail 40 is easily inserted into the ball holder 20 without damaging the top to damage the ball holder 20. When the first rail 40 is inserted into the ball holder 20, the slide rails 440 of the first rail 40 respectively contact the balls 240, 260 of the ball holder 20, and the balls 240, 260 can assist the sliding of the first rail 40 in the second rail 60. . The first rail 40 is continuously pushed in until the unlocking post 422 of the first handle 40 abuts against the unlocking side 864 of the positioning member 80 and slides along the unlocking side 864, and pushes the positioning member 80 toward the unlocking, that is, near the second rail 60. The direction of the side end 622 slides; the positioning 1322861 portion 838 of the positioning member 80 is disengaged from the snap hole 228 of the ball holder 20, and the ball holder 20 is unlocked relative to the second holder 60 to be retracted in the direction of the first rail 40. Sliding; at this time, the block 828 of the positioning member 80 snaps into the slot 628 of the second rail 60 to stop sliding, and is positioned on the second rail 60. Referring to FIG. 6, when the first handle 40 is withdrawn from the second handle 60, the ball holder 20 slides with the first rail 40 until the end of the buckle portion 226 of the ball holder 20 abuts against the stop member 66. The surface 662 is blocked and the ball holder 20 stops sliding. The first rail 40 is continued to be pulled in the direction of the withdrawal until the locking post 420 of the first handle 40 abuts against the locking side 862 of the positioning member 80 and slides along the locking side 862, and pushes the positioning member 80 toward the second The direction of the side end 620 of the sliding member 620 is slid; the positioning portion 838 of the positioning member 80 is engaged with the locking hole 228 of the locking portion 226 to position the ball holder 20 again; at this time, the block 828 of the positioning member 80 is engaged with the second rail. The card slot 630 of 60 prevents the positioning member 80 from sliding in the unlocking direction. Continue to pull the first hold 40, which can be completely extracted from the second hold 60. In summary, the present invention complies with the requirements of the invention patent, and proposes a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and equivalent modifications or variations made by those skilled in the art of the present invention should be included in the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a partial exploded view of a preferred embodiment of the ball slide of the present invention 11 1322861. Fig. 2 is an enlarged view of the positioning member of the preferred embodiment of the ball slipper of the present invention. Figure 3 is an enlarged view of the other direction of the positioning member of the preferred embodiment of the ball slipper of the present invention. Figure 4 is a perspective view of one end of a preferred embodiment of the ball slide of the present invention, wherein the first handle is withdrawn from the second rail and is not shown. Fig. 5 is a schematic view showing the unlocking process of the ball holder in the preferred embodiment of the ball slipper of the present invention. Fig. 6 is a schematic view showing the positioning process of the ball holder in the preferred embodiment of the ball slide of the present invention. [Main component symbol description] Ball holder 20 web 22, 42 side end 220 > 222 > 620 '622 protruding plate 224, 624 snap portion 226 snap hole 228 side arm 24, 26 ' 44 ' 64 , 74, 660 Ball 240, 260 First rail 40 Locking column 420 Unlocking post 422 Slide 440 Second rail 60 Opening 626 Card slot 628, 630 Inner slide 640 Stopper 66 12 1322861 Support surface 662 Third rail 70 Locating member 80 Base 82 Side wall 820, 832 Slot 822 Recess 826 Block 828 Bump 830, 834 Notch 835 '836 Positioning portion 838 Abutting top 86 End face 860 Locking side 862 Unlocking side 864 13