200914747 九、發明說明： 【發明所屬之技術領域】 更詳而言之，特別是指一 可大幅降低生產、組裝與 本發明係與一種線性滑塊有關， 種導滑效果佳，且構造更為精簡，而 材料成本之線性滑動單元。 【先前技術】 按，線性傳動元件相關產品應用相當廣泛，常見者諸如麟 性滑動單元、滾珠螺桿等，特別是線性滑動單元已被廣泛安裝於 許多t型精密機具設備上，可藉以提高機件滑移的精密度、順暢 度、穩定性及使用壽命等。 目前線性滑動單元，為麵滑塊能夠平穩順暢地沿著導軌 之=轴方向滑移’均必需在滑塊與導執間裝設各式各樣的導引滑 =構’如中華民國證書號數M期65「線性滑動單元之滾柱循 衣裝置」新型專利案，便是在滑塊與導執之相對滾動面間裂設半 Z裝置，該半循《置包含㈣流元件、轉向元件與保持元 且錢上設有通孔與管部，可與半循環裝置共同組成—可供 :袞:主，流之通道，由於該等滾柱可與導轨相互抵接，因此，該滑 對^由抵接於導軌上之各滾柱沿著通道迴流，而在導軌上作相 對滾轉滑移。 【發明内容】 惟|則專利案雖可雄保滑塊在導軌上能夠平穩順暢地滑移， 4用半循環裝置搭配滾柱之結構設計，缺點在於組成構件 200914747 太多’整體構造祕複雜，纟論生產製造、組裝或材料成本均 相當尚；此外，當半循環裝置或滾柱磨損時，也必需大費周章的 端蓋、滑塊與全部滾柱整個拆解，再進行更換，而無法單獨拆解 更換，故更換操作相當㈣費力，造絲護成本高，零件之更換 成本也高。 本發明提供-種線性滑動單元，主要包括有一導軌、一滑 塊與多數個定位元件；該導執二相對邊側各設有-滚動面，每一 «面上凹設有-沿著長軸方向延伸之滾動槽道；該滑塊可用以 «於導軌上，且二相對相各設有—側壁面，每—侧壁面 多數個沿著長軸方向排列之„部位；該等定位元件各呈有一固 疋部分與—滾動體’該㈣部分可供安裝於滑塊之貫穿部位，該 ，衰動體係位於滑塊之側壁面内側，而與導執上相對之滾動槽道相200914747 IX. Description of the invention: [Technical field to which the invention pertains] In more detail, in particular, it can greatly reduce the production, assembly and the invention, and is related to a linear slider, which has a good effect of guiding and sliding, and has a better structure. Streamlined, linear slider unit for material cost. [Prior Art] According to the linear transmission component related products, the application is quite extensive, such as the lining sliding unit, the ball screw, etc., especially the linear sliding unit has been widely installed on many t-type precision machine equipment, which can improve the machine parts. Slip precision, smoothness, stability and service life. At present, the linear sliding unit, which can smoothly and smoothly slide along the axis of the guide rail in the direction of the axis, must be equipped with a variety of guiding slides between the slider and the guide, such as the Republic of China certificate number. The new patent case of the M-stage 65 "roller-sliding device for linear sliding unit" is to split the semi-Z device between the opposite rolling surfaces of the slider and the guide. The semi-circle includes the (four) flow element and the steering element. And the holding element and the money is provided with a through hole and a pipe part, which can be combined with a semi-circulating device - for: 衮: main, flow passage, since the rollers can abut each other with the guide rail, therefore, the slip The rollers which are abutted on the guide rail are recirculated along the passage, and the relative rollers are slid on the guide rail. [Summary of the Invention] However, the patent case can smoothly and smoothly slide the slider on the guide rail. 4 The semi-circular device is matched with the structural design of the roller. The disadvantage is that the component 200914747 is too much, and the overall structure is complicated. The cost of manufacturing, assembly or material is quite high. In addition, when the semi-circulating device or the roller is worn, it is necessary to disassemble the end cap, the slider and all the rollers, and then replace them. Disassembled and replaced separately, so the replacement operation is quite (four) laborious, the cost of wire manufacturing is high, and the replacement cost of parts is also high. The invention provides a linear sliding unit, which mainly comprises a guide rail, a slider and a plurality of positioning elements; the opposite sides of the guide are respectively provided with a rolling surface, each of which is concavely arranged along the length a rolling channel extending in the axial direction; the slider can be used on the guide rail, and the opposite sides are respectively provided with a side wall surface, and each of the side wall surfaces is arranged along a long axis direction; the positioning elements are respectively Forming a solid portion and a rolling element 'the (four) portion is mountable to the through portion of the slider, the decaying system being located inside the side wall of the slider and opposite to the rolling channel of the guide
互抵接，魏«㈣㈣，俾切射沿著導軌㈣ 位滑移。 F 本發明所提供之線性滑動單元，不僅滑塊同樣能夠輕易地 於導軌上作平穩順暢地限位滑移，相較於傳統半循環裳置其配滾 柱之導引滑移結構’整體組合構造更為簡單，且组合構件少，可 生產、組裝與材料成本’加上定位元件或滾動體可單獨 拆卸更換’更可有效降低維護與零件更換成本。 【實施方式】 首先 ’請參閱圖-至圖五’本發明_種線性滑動單 元之較佳 200914747 貝j主要包括有一導軌10、一滑塊2 0及多數個定位元件3 〇 ; 其中： 該導軌（guide rail) 1〇，二相對邊側各設有一滾動面^， 母/袞動面11上凹设有一沿著長抽方向延伸之滾動槽道12 ; 該滑塊20,可滑套於該導軌10上，其二相對邊側各設有一側 壁面21 ,每一側壁面21上設有多數個沿著長軸方向適當間隔排列 之貫穿部位22，本實施例之貫穿部位22是指—螺孔； 該等定位元件30,各具有一固定部分31與一滾動體33;該固 疋邛为31可供安裝於滑塊2〇之貫穿部位22，該滾動體33係位於滑 塊20之側壁面21内侧，可與導軌1〇上相對之滾動槽道12相互抵 接，本貫鉍例之固定部分31係指一定位珠（ball pLUNGERS/BALL BUTTONS)，其中該定位元件30之固定部分31係為一螺牙，其内部 構成一空間32，該空間32裝設有彈簧34與滾動體33，該彈簧34 提供滾動體33 —預壓力，且該定位元件3〇可鎖固於為螺孔形態之 貫穿部位22，且該滾動體33係指一滾珠，可被限位於該空間32 内作自由滾轉，而可供抵接於導軌1 〇上相對之滾動槽道丨2。而圖 四與圖五則為實體定位元件30以滚動體33定位於導軌1 〇之滾動 槽道12之示意圖。 本發明之定位元件30組裝時，只需直接將各定位元件3〇以螺 紋原理嚷合於滑塊2 0邊側側壁面21上的貫穿部位2 2 (即螺孔），並 使各滾動體33與導軌10相對側之滾動槽道12相互抵接，即可快速 200914747 地完成組裝作業；當然，該定位元件3〇之固定部分31或滑塊2〇 之貫穿部位22間，亦可加設有定位結構或定位裝置，使固定部分 31組裝疋位後，其滾動體33恰可處於準確的位置，也就是說，該 滑塊20未滑套於導軌10前，該等定位元件3〇亦可預先準確地安裝 於滑塊20上，且當滑塊20滑套於導執1〇上時，該等定位元件別 之滾動體33亦可準確地抵接於滾轉槽道丨2上。 本發明之定位元件3〇利用内側末端之滾動體33保持與導轨 ίο相對側之滾轉槽道12相互抵接之結構，可使滾動體33與滾轉槽 道12間形成穩定順暢的滾轉導引作用’因此，也能迫使滑塊2〇 沿著導執10長軸方向作穩定順暢的限位滑移。 本發明之定位元件3〇原則上具有可安裝於滑塊2〇貫穿部位 22上之固定部分31，以及可用以抵接導軌1〇各相對滾轉槽道K 之滾動體33，即可達到本發明所欲達到之目的與功效，因此，該 滑塊20之貫穿部位22與定位元件3〇之固定部分31，並不侷限於螺 孔與螺栓的相對螺固結構，也可以是其他的相對組裝固定結構， 至於戎滾動體33，也不侷限於滚動體，亦可為其他滾轉結構體， 同樣均能達到滾轉與導引的功效。 請參閱圖六與圖九為本發明之第二實施例之線性滑動單 几’包括：一導軌丨〇’ ，其形成有多數個貫穿部位12’ ； 一滑塊 2〇> ，係可滑套於該導軌1〇，上，其對應導軌UT二相對邊側各 凹设有滾動槽道22’ ：多數個定位元件30，各具一固定部分31 200914747 ”滾動體33，该固定部分可供安裝於導軌ι〇，之貫穿部位 12, ’並提供滾動體33與滑㈣，上之滾動槽道22，相互抵接。 本I月之位凡件3()組裝於本發明之第二實施例時，只需直 接將各定位元件3〇以螺紋原理儒合於導軌Μ，上的貫穿部位 12’（即螺幻，並使各賴⑽與滑⑽，❹動槽道22，相互 抵接，即可快速地完成組裝作f ;當然，該滑⑽，未滑套於導 軌1〇4等定位&件3G亦可預先Μ地安裝於導執1〇，上， 且田β塊2G 套於導軌1()’ ±時，該等^位元件如之滾動體抑 亦可準確地抵接於滾轉槽道22，上。 3再’閱圖至圖二，本發明線性滑動單元之發明重點在於 滑塊_導執_之導引滑移構造，主要是利用多數個可分別獨 立組褒於滑塊20上之定位元件3()與導軌1〇相對側產生導引滑移 作用，以達到預期之目的與訴求，請再參閱圖二、圖十與圖十— 所不’該導軌（guiderail) 1Q其滾動則丨上之滾動槽道η，可 因定位τό件3G之滾動體33接觸面積之需求，將其外表面設計成多 邊形、圓弧、拋物線或由兩條直線面或弧面所夾的夾角，以符人 不同工作負荷之需求。又如圖十二與圖十三所示，該導執1〇其滾 動槽道12不限定凹人導軌1G之滾動面11，其滾動槽道12也可由滾 動面11與凸部13構成，然而凸部13不限定由圓弧所構成之外表 面，也可由二邊形、三邊形、四邊形、五邊形…多邊形，或弧面、 或由直線面與弧面所組合之外表面。如圖十四至圖十七所示，嗜 200914747 導執10其滾動槽道12係由二個凸部13所構成之示意圖，考量滾動 槽道12長久使用後有磨耗或磨損而影響使用精度，故將滾動槽道 12與凸部13設置於副導執14上，該副導執14之材質可因需求再施 與熱處理或其他硬化處理，以待副導軌14磨耗可直接更換副導執 14或定位元件30,而不需更換導執10，以提高產品之使用壽命。 而圖十至圖十七其滾動槽道12與凸部13之設計相同應用於 圖六與圖九之第二實施例中，該滾動槽道22，不限定由圓弧所構 成之外表面，也可由二邊形、三邊形、四邊形、五邊形…多邊形， 或弧面、或由直線面與弧面所組合之外表面。其滑塊2〇,其滾動 槽道22，由一個凸部或二個凸部所構成，再考量滾動槽道22，長 久使用後有磨耗或磨損而影響使用精度’將滾動槽道22，與凸部 設置於副導軌上，該副導執完整設置於滑塊2〇，’再考量副導軌 之材貝可因需求再施與熱處理或其他硬化處理，以待副導軌磨耗 可直接更換副導軌或定位元件3〇，而不需更換滑塊2〇，，以提高 產品之使用壽命。 因此，整體構it已脫離了傳統循環裝置之窠白，而變得相當 的精簡’這樣做法’除了生產製造更為容易外，整體之組裝操作 也變得極為簡單，而有助於大幅降低生產製造、組裝成本與材料 成本，除此之外，當定位元件3〇之滾動體33經過一段時間滾轉導 引產生磨損後，亦可單獨地針對定位元件3〇，甚至滾動體33進行 拆卸更換’故相|父於傳統循環裝置之設計，其零件之更換成本較 200914747 低’拆卸更換之操作也更為簡便快速。 、’’不上所述’本發明在同類產品中實有其極佳之進步實用性， 同時遍查國内外關於此類結構之技術資料，文獻中亦未發現有相 同的構造存在在先，是以，本發明實已具備發明專利要件，爰依 法提出申請。 准，以上所述者，僅係本發明之數較佳可行實施例而已，故 舉凡應用本發明說明t及中請專利範圍所為之等效結構變化，理 應包含在本發明之專利範圍内。 【圖式簡單說明】 圖係本發明線性滑動單元第一實施例之立體分解合圖。 圖一係本發明線性滑動單元第一實施例之剖面示意圖。 圖一係圖一之局部放大剖面圖，其顯示有組裝於滑塊貫穿 部位上之定位元件的固定部分，以及定位s件上抵接於導執滾轉 槽道上之滾動體。 圖四係本發明線性滑動單元其實體定位元件與滾動體之第 一實施例之剖面示意圖。 圖五係圖四之局部放大剖面圖。 圖，、係本發明線性滑動單元第二實施例之剖面示意圖。 圖七係圖六之局部放大剖面圖，其顯示有組裝於導軌貫穿 』位上之定位TL件的固定部分，以及定位元件上抵接於滑塊滾轉 槽道上之滾動體。 200914747 圖八係本發明線性滑動單元其實體定位元件與滾動體之第 一貫施例之剖面示意圖。 圖九係圖八之局部放大剖面圖。 圖十係本發明線性滑動單元次一實施例，其導軌之滚動槽 道為兩條直線面構成夾角之剖面示意圖。 圖十一為圖十相同之實施例’其實體定位元件與滾動體定 位於兩條直線面所構成的夾角滾動槽道之剖面示意圖。 圖十二係本發明線性滑動單元另一實施例，其導軌之滾動 槽道由滾動面與凸部構成之剖面示意圖。 圖十三為圖十二相同之實施例，其實體定位元件與滾動體 定位於滾動面與凸部構成的滾動槽道之剖面示意圖。 圖十四係本發明線性滑動單元又一實施例，導軌其滾動槽 道係由二個弧形凸部之剖面示意圖。 圖十五為圖十四相同之實施例，其實體定位元件與滾動體 定位於二個弧形凸部的滾動槽道之剖面示意圖。 圖十六係本發明線性滑動單元再一實施例，導軌其滾動槽 1係由一個線形凸部之剖面示意圖。 圖十七為圖十六相同之實施例，其實體定位元件與滾動體 &位於二個線形凸部的滾動槽道之剖面示意圖。 【主要元件符號說明】 10導軌 12 200914747 11滾動面 12滾動槽道 13凸部 14副導軌 20滑塊 21側壁面 22貫穿部位 30定位元件 31固定部分 32空間 3 3滚動體 34彈簧 10’ 導軌 12’ 貫穿部位 20’ 滑塊 22’ 滚動槽道Mutual abutment, Wei «(four) (four), 俾 cut and slide along the rail (four) position. F The linear sliding unit provided by the invention can not only smoothly and smoothly limit the sliding on the guide rail, but also the overall combination of the guiding sliding structure of the matching roller compared with the conventional semi-circular sliding skirt. The construction is simpler and the number of combined components is small, and the production, assembly and material cost 'plus the positioning component or the rolling element can be separately disassembled and replaced' can effectively reduce the maintenance and replacement cost. [Embodiment] First, please refer to the drawings - to FIG. 5, the preferred 200914747 of the present invention comprises a guide rail 10, a slider 20 and a plurality of positioning elements 3 〇; wherein: the guide rail (guide rail) 1〇, two opposite sides are respectively provided with a rolling surface ^, the mother/flip surface 11 is concavely provided with a rolling channel 12 extending along the long drawing direction; the slider 20 can be sleeved on the Each of the two opposite side sides of the guide rail 10 is provided with a side wall surface 21, and each of the side wall surfaces 21 is provided with a plurality of through portions 22 which are arranged at appropriate intervals along the longitudinal direction. The through portion 22 of the embodiment refers to a screw. The positioning members 30 each have a fixing portion 31 and a rolling body 33; the fixing member 31 is attachable to the through portion 22 of the slider 2, and the rolling body 33 is located on the side of the slider 20. The inner side of the wall surface 21 can abut against the rolling groove 12 opposite to the guide rail 1 ,. The fixed portion 31 of the present embodiment refers to a ball pLUNGERS/BALL BUTTONS, wherein the fixing portion 31 of the positioning member 30 It is a thread, and its interior constitutes a space 32, which is provided with a spring 3 4, with the rolling body 33, the spring 34 provides the rolling body 33 - pre-pressure, and the positioning element 3 〇 can be locked in the through hole 22 in the form of a screw hole, and the rolling body 33 refers to a ball, can be limited to The space 32 is free to roll inwardly and is adapted to abut the opposite rolling channel 丨2 on the guide rail 1 . 4 and 5 are schematic views of the solid positioning member 30 positioned by the rolling bodies 33 on the rolling channels 12 of the guide rails 1 . When the positioning component 30 of the present invention is assembled, it is only necessary to directly couple each positioning component 3 to the penetration portion 2 2 (ie, the screw hole) on the side wall surface 21 of the slider 20 by a threading principle, and to make each rolling element 33, the rolling channel 12 on the opposite side of the guide rail 10 abuts each other, and the assembly work can be completed quickly in 200914747; of course, the fixing portion 31 of the positioning member 3 or the through portion 22 of the slider 2 can be added. After the fixing portion 31 is assembled and clamped, the rolling body 33 can be in an accurate position, that is, the slider 20 is not sleeved in front of the guide rail 10, and the positioning elements are also It can be accurately mounted on the slider 20 in advance, and when the slider 20 is slid over the guide 1 , the other rolling elements 33 of the positioning elements can also accurately abut on the rolling channel 丨 2 . The positioning member 3 of the present invention maintains a structure in which the rolling grooves 13 on the opposite sides of the guide rails abut each other by the rolling elements 33 at the inner ends, so that a stable and smooth rolling can be formed between the rolling elements 33 and the rolling grooves 12. The guiding action ' therefore, it is also possible to force the slider 2 to perform a stable and smooth limit slip along the long axis of the guide 10. The positioning element 3 of the present invention has in principle a fixing portion 31 mountable on the sliding portion 2 of the slider 2, and a rolling body 33 which can be used to abut the respective rolling grooves K of the guide rail 1 to achieve the present. The purpose and effect of the invention are to be achieved. Therefore, the through portion 22 of the slider 20 and the fixed portion 31 of the positioning member 3 are not limited to the relative screwing structure of the screw hole and the bolt, and may be other relative assembly. The fixed structure, as for the rolling element 33, is not limited to the rolling element, and can also be other rolling structure, and can also achieve the effect of rolling and guiding. Please refer to FIG. 6 and FIG. 9 for a linear sliding single section 'including a guide rail 丨〇' which is formed with a plurality of through portions 12'; a slider 2〇> The rolling guide 22' is recessed on the opposite side of the guide rail UT: a plurality of positioning elements 30 each having a fixed portion 31 200914747 "rolling body 33, the fixed portion is available Installed on the guide rail 〇, the through portion 12, 'and provide the rolling body 33 and the sliding (four), the upper rolling channel 22, abut each other. This I month position 3 () assembled in the second embodiment of the present invention For example, it is only necessary to directly align the positioning elements 3〇 with the threading principle on the guide rails, and the penetrating portion 12' (ie, the screw, and the respective (10) and the sliding (10), the swaying channel 22, abut each other. , the assembly can be completed quickly f; of course, the sliding (10), the unsliding sleeve on the guide rail 1〇4, etc., the positioning & 3G can also be pre-wired on the guide 1 〇, on, and the Tian β block 2G set When the guide rail 1()' is ±1, the rolling elements can also accurately abut on the rolling channel 22, and then Referring to the drawings to FIG. 2, the invention of the linear sliding unit of the present invention focuses on the guiding and sliding structure of the slider _ guiding _, mainly using a plurality of positioning elements 3 () and the positioning elements 3 () which can be independently grouped on the slider 20 Guide rails are formed on the opposite side of the guide rail 1 to achieve the intended purpose and appeal. Please refer to Figure 2, Figure 10 and Figure 10 - No. The guiderail 1Q scrolls the rolling channel η, due to the need to locate the contact area of the rolling elements 33 of the τ element 3G, the outer surface of the τ element 3G can be designed as a polygon, an arc, a parabola or an angle between two straight faces or curved faces to satisfy different workloads. Further, as shown in FIG. 12 and FIG. 13, the guide wheel 1 has its rolling groove 12 not defining the rolling surface 11 of the concave guide rail 1G, and the rolling groove 12 can also be composed of the rolling surface 11 and the convex portion 13. However, the convex portion 13 is not limited to the outer surface formed by the circular arc, and may be a polygon, a triangle, a quadrangle, a pentagon, a polygon, or a curved surface, or a surface combined with a curved surface and a curved surface. As shown in Figure 14 to Figure 17, the favorite 200914747 guide 10 its scrolling The channel 12 is a schematic view of the two convex portions 13. The rolling channel 12 is worn or worn after long-term use, which affects the accuracy of use. Therefore, the rolling channel 12 and the convex portion 13 are disposed on the auxiliary guide 14. The material of the auxiliary guide 14 can be further subjected to heat treatment or other hardening treatment according to requirements, so that the auxiliary guide rail 14 can be directly worn to replace the auxiliary guide 14 or the positioning member 30 without replacing the guide 10 to improve the use of the product. In the second embodiment of FIG. 6 and FIG. 9 , the rolling channel 12 is not limited to the arc shape. The surface may also be a surface of a combination of a polygon, a triangle, a quadrangle, a pentagon, a polygon, or a curved surface, or a combination of a straight surface and a curved surface. Its slider 2〇, its rolling channel 22, is composed of one convex part or two convex parts, and then considers the rolling channel 22, after long-term use, there is wear or wear which affects the use precision 'will roll the channel 22, and The convex portion is disposed on the auxiliary rail, and the auxiliary guide is completely disposed on the sliding block 2〇, and the material of the auxiliary guiding rail can be further applied to the heat treatment or other hardening treatment, so that the auxiliary rail can be directly replaced by the secondary rail. Or positioning the component 3〇 without replacing the slider 2〇 to improve the service life of the product. Therefore, the monolithic structure has deviated from the whitening of the traditional circulation device, and it has become quite simple. In addition to making it easier to manufacture, the overall assembly operation is extremely simple, which helps to greatly reduce production. Manufacturing, assembly and material costs, in addition, after the rolling elements 33 of the positioning element 3 are worn and guided for a period of time, the positioning elements 3 〇 and even the rolling bodies 33 can be separately removed and replaced. 'The original phase|Father in the design of the traditional circulation device, the replacement cost of its parts is lower than that of 200914747'. The operation of disassembly and replacement is also simpler and faster. The invention does not have the excellent progress and practicality in the same kind of products, and at the same time, the technical materials of such structures at home and abroad are frequently investigated, and the same structure is not found in the literature. Therefore, the present invention already has the invention patent requirements, and submits an application according to law. The above-mentioned embodiments are merely preferred embodiments of the present invention, and equivalent structural changes in the scope of the present invention and the scope of the patent application are intended to be included in the scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS The drawing is a perspective exploded view of a first embodiment of the linear sliding unit of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic cross-sectional view showing a first embodiment of a linear sliding unit of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partially enlarged cross-sectional view showing a fixed portion of a positioning member assembled to a through portion of a slider, and a rolling element abutting on a guide rolling groove on the positioning member. Figure 4 is a cross-sectional view showing the first embodiment of the linear positioning unit of the present invention, which is a physical positioning member and a rolling body. Figure 5 is a partial enlarged cross-sectional view of Figure 4. Figure is a schematic cross-sectional view showing a second embodiment of the linear sliding unit of the present invention. Figure 7 is a partially enlarged cross-sectional view of Figure 6 showing the fixed portion of the positioning TL member assembled over the rail through position and the rolling elements abutting the slider rolling channel on the positioning member. 200914747 Fig. 8 is a schematic cross-sectional view showing the first embodiment of the linear sliding unit of the present invention with its physical positioning elements and rolling elements. Figure 9 is a partially enlarged cross-sectional view of Figure 8. Figure 10 is a second embodiment of the linear sliding unit of the present invention, wherein the rolling channel of the guide rail is a schematic cross-sectional view of the two straight faces forming an angle. Figure 11 is a cross-sectional view showing the same embodiment of Figure 10, in which the solid positioning member and the rolling element are positioned on two straight surfaces. Figure 12 is a cross-sectional view showing another embodiment of the linear sliding unit of the present invention, wherein the rolling groove of the guide rail is composed of a rolling surface and a convex portion. Figure 13 is a cross-sectional view showing the same embodiment of Figure 12, with the physical positioning member and the rolling body positioned in the rolling groove formed by the rolling surface and the convex portion. Figure 14 is a further embodiment of the linear sliding unit of the present invention, the guide groove of which is a schematic cross-sectional view of two arcuate projections. Figure 15 is a cross-sectional view showing the same embodiment of Figure 14 with the solid positioning member and the rolling body positioned in the rolling grooves of the two arcuate projections. Figure 16 is a further embodiment of the linear sliding unit of the present invention, the guide groove 1 of which is a schematic sectional view of a linear convex portion. Figure 17 is a cross-sectional view showing the same embodiment of Figure 16 with the physical positioning member and the rolling body & located in the rolling grooves of the two linear projections. [Main component symbol description] 10 guide rail 12 200914747 11 rolling surface 12 rolling groove 13 convex portion 14 auxiliary rail 20 slider 21 side wall surface 22 penetration portion 30 positioning member 31 fixing portion 32 space 3 3 rolling body 34 spring 10' rail 12' through section 20' slider 22' rolling channel