565663 玖、發明說明 (發明說明應敘明.發明所屬之技術領域、先前技術、内容、實施方式及固式簡單說明） 【發明所屬之技術領域】 發明領域 本發明是有關於一種線性致動器，一般包括一動力致 5動器、一受該致動器致動的運輸架體，及一線性導引體用 以導引該運輸架體沿一線性路徑。此線性致動器具有於工 業機械裝置寬廣的應用範圍，以二維或三維可移動台體及 機械手臂的形式以及用於汽車、船艇及飛機的領域中。 · C 先前 10 發明背景 傳統上，一用於此型式的線性致動器之線性導引體是 由一循環珠型滑動軸承所構成。第8a至8d顯示一典型線 性滑動軸承，其包括-基部1，及-導引架體3，其受該機 邛1支撐且其内界定一具有開放頂端之導槽2。該導槽2 15以可滑動的方式納置一運輸架體5 ,其藉由以四排循環鋼 朱6 /σ w亥運輪架體5的其中一側壁配置，且一螺桿4納置 於該運輸架體5的對應螺孔内。該運輸架體5設置有數螺 紋女裝孔7 ,用以將一被致動的機台或其他物件（未顯示 於圖中）附接於上。 20 _桿4經由數循環鋼珠（未顯示於圖中）螺入於對 應‘孔内。當該螺桿4被一電動馬達（未顯示於圖中）轉 動丁 口亥運輸架體5沿該導槽2線性移動，且由該四排猶 環鋼珠6所形成的線性軸承可容許該運輸架體5以很小的 摩擦及極小游動而移動。 6 565663 玖、發明說明 5 ;、、、:而，近年來該運輸架體5的位置精確性愈加需要， 而已I現此型式之習用線性軸承對一些應用中已不適當。 由於使用鋼珠來支撐負載，且該等鋼珠是以點或小接觸面 ’來接觸相對表面，因此當該運輸架體受到一相當大或部 平均負載時，該等鋼珠及/或導引架體3易產生彈性變形且 如此會導致增加摩擦阻力及失去位置精確性。 / 10 當該運輸架體5受到-相當大的向上負載時，如第8a 圖所示，該導引架體3的上部將會變形而相互遠離，如第& 9圖所示者，且以較大部分的負載施予上排的鋼珠6…亥 運輸架體5受到一相當大的向下負«，如第 曰、大P刀的負載施予下排的鋼珠6。當該運輸架體5 受到一相當大的側向負載時，如第8c圖所示，會以較大部 刀的負載施予對應側排的鋼珠6。當該運輸架體$受到— 15 的扭轉負載時’如第8d圖所示’會以較大部分的負 載施予對應對角相對排的鋼珠6。如這些圖式所示，當該 運輸架體5受到_不的的g # J不均的負載時，該等鋼珠6的局部部位 ，支牙相备大部分的負載，且如此易導致相當大的彈 形0 【發明内容】 20 發明概要 基於習知的問題，本發明 ^ 要的，即在提供一種 。 ㈣硬度及無摩擦的線性轴承 本發明的第二目的在提 ，、種问度耐久之改良式線性 7 565663 玖、發明說明 致動器。 本么月的第一目的在提供一種改良式線性致動器，其 設置有用以消除超時形成的游動之裝置。 ίο 根據本發明，以提供一種線性致動器來達成這些目的 ，其包括·一導引架體，包含一界定有一上滑動表面之基 板，及一導引板，該導引板以相對該基板平行且間隔關係 延伸’且界定一下滑動表面及一對側滑動表面；一運輸主 體放置於5亥基板上，且界定一上滑動表面相對於該導引 板的下滑動表面’及一下滑動表面相對於該基板的上滑動 表面；及-對側板，自該運輸主體的部分以側向間隔關係 延伸，以將該導引板設於其間，且界定側滑動表面相對於 該導引板的側滑動表面；至少其一之各對的相對滑動表面 係以一滑動軸承構件所界定。 15 20 該等滑動軸承構件，其主要可以多孔碳材質所製成， 可提供相當小摩擦堅硬軸承表面，其即使當該運輸架體受 到高且/或不平均負載時可達到適合且耐久的導引作用。且 ，由於侧向導引是藉由將該導引板設於該等側板之間而設 成，且該等侧板之間的開口寬度相較於習用導引架體之下 是相當小’因此可確保相當堅固的側向導引作用。特別是 若一用於支撑-負載的支撑板，如一座台，是連接橫跨於 該等側板的自由端時’該等側板可被該支撑板更為堅固地 持住，且可確保更堅固的側向導引作用。由於垂直導引是 藉由該基板及導引板於該運輸主體的側向中間部處相對且 該基板與該導引板的滑動表面是以實質上成直角地相互相 8 565663 玖、發明說明 對所設成’因此可確保堅固垂直導引作用。一般來說，此 線性致動器另外設置有一動力致動器，用以致動該運輸主 體沿該等滑動表面。 由於即使該等滑動軸承構件並不完全免於磨損，該等 側板宜適以可調整該等側板與該導引板的相對滑動表面之 間的間隙’且該導引板適以可調整該運輸主體與該導引板 的相對滑動表面之間的間隙。此調整作用可藉使用凹槽或 其他長形孔作為安裝孔，使鎖固構件如螺桿通過，而得以 達成。 基於使該線性致動器的侧向範圍最小化，各該等滑動 板可設置有一外側向表面，其與該運輸主體的一對應側表 面實質上齊平。 圖式簡單說明 錄將本發明配合參考圖式詳述於后，其中： 第1圖是使用本發明的線性致動器之分解透視圖； 第2圖是該線性致動器之透視圖； · 第3圖是該運輸架體之部分剖面側視圖； 弟4圖是該線性致動器之示意剖面前視圖； 第5a及5b圖疋類似於第4圖，而顯示如何去除該等 滑動表面内的間隙； 第6圖是本發明第二實施例之透視圖； 第7圖是本發明第三實施例之透視圖； 第8a至8d圖是顯示一習用線性致動器受到不同種類 之剖面前視圖；及 9 565663 玖、發明說明 第9圖是顯示該習用線性致動器的導引架體的變形的 一可能形式之前視圖 C實施方式3 較佳實施例之詳細說明 5 第1至3圖是顯示使用本發明的線性致動器10。該線 性致動器10包括一矩形基板π ,及一對端板12及13以 直立方向固定地附接於該基板u的對應縱端。一具相當大 厚度之矩形導引板14延伸於該等端板12與13的上端之間 以正對地相對於該基板U，使該基板u及導引板14的縱 1〇向延伸中心線相互實質上對齊。該基板u、端板12及導 引板14連結形成一導引架體。 一由一矩形塊體所構成之運輸架體15是藉由上滑動軸 承構件16及下滑動軸承構件17，以實質上不會有任何游 動的方式，設於該基板11與導引板14之間。一對側板18 15及I9固定地附接於該運輸架體15的上表面之其中一側部 上，且使該導引板14藉由側滑動軸承構件20及21，以實 質上不會有任何游動的方式，設於該等側板18與19之間 〇 該等滑動軸承構件16至21可由任何習用包含金屬轴 2〇承材質、塑膠軸承材質及其他高硬度轴承材質的轴承材質 所構成，金屬軸承材質例如填充有油的多孔金屬軸承及以 固態潤滑劑礙入於内的金屬軸承，塑膠軸承材質例如pTFE 樹脂及聚醯亞胺樹脂，其他軸承材質例如木材或其他多孔 碳材質。本發明特別適合使用之多孔碳材質一般是以將紛 10 玖、發明說明 木材或其他植物材質如麥鎚混合，且燒結此混合 二，形成陶製材質所置備而成。所產生的軸承材質一 般稱為木材型式或RB冑製型式軸承材質， 性及低摩擦阻力。此_«已被 :夂使用’乃因其高度耐用性且因無須任何潤滑劑而可防 塵及防濕。 該等滑動轴承構件16至21可以接合劑或任何物理固 接配置方式附接於該運輸架體Μ或該相對導5丨板14上， 及附接於該等侧板18及19或該相對基板U Ρ於所述實 %例中’ 4等滑動轴承構件16至21皆附接於該運輸架體 衣一 一 ’丨口玉、4仍、14雙;貧j 件16至21之表面可藉軟性鋼或不鏽鋼構件所界定 該運輸架體15可適以 螺旋機構包括一螺桿23、 藉一珠形螺旋機構致動，該珠形 一具一螺旋凹槽界定於内且螺接 納置該螺桿23之螺帽22 ,及數鋼珠36， 該等鋼珠36納置 於由該螺桿23及螺帽22接合界定之螺旋凹槽内。該螺帽 22是固定地附接於該運輸架體15，且該螺桿23是納置於 該螺帽22的-螺孔内且延伸於該運輸架體15的一中心孔 35内。該等鋼珠36循環於該螺旋凹槽内，且於該螺桿23 與螺帽22之間以習用方式達到低摩擦無游動銜接。 該螺桿23於其中_端處受該前板12藉由—軸承構件 24可旋轉地支撐，且以_懸臂方式延伸通過該運輸架體15 的中心孔。掣止體25及26附接於該等前及後板12及13 的相對内側上以限制該運輸架體15作動行程。 565663 砍、發明說明 5 10 "亥螺杯23疋X 一旋轉驅動單元27所致動，該旋轉驅 動單兀27 ^ a i滑輪29附接於—電動馬達μ的輸出轴 上，一從動滑輪31附接於該螺桿23的對應端上，及一環 狀皮帶3〇通過繞於這些滑輪29 131上。因此，藉驅動該 電動馬達28,該螺桿23彳以適意方向轉動。 减轉驅動單27附接於_依次固定地附接於該前版 12上之安4板32。-保護蓋33附接於該安裝板32上以覆 蓋該旋轉驅動單元27的移動部位。 於所述貫靶例中，當該螺桿23被該旋轉驅動單元27 轉動且該運輸架體15以任一縱向方向受致動日夺，該導引板 14及與該運輸架體15的上及下表面銜接之該基板u可防565663 发明 Description of the invention (The description of the invention should be stated. The technical field to which the invention belongs, the prior art, the content, the embodiments, and the solid simple description) [Technical field to which the invention belongs] Field of the invention The present invention relates to a linear actuator Generally, it includes a power actuator, a transport frame body actuated by the actuator, and a linear guide body for guiding the transport frame body along a linear path. This linear actuator has a wide range of applications in industrial machinery, in the form of two- or three-dimensional movable tables and robotic arms, and in the field of automobiles, boats and aircraft. · C Previous 10 Background of the Invention Traditionally, a linear guide for a linear actuator of this type is composed of a recirculating bead-type plain bearing. Sections 8a to 8d show a typical linear plain bearing, which includes-a base portion 1, and-a guide frame body 3 supported by the machine 邛 1 and defining a guide groove 2 having an open top end therein. The guide groove 2 15 accommodates a transport frame 5 in a slidable manner, which is arranged by one of the side walls of the four-row circulating steel frame 6 / σ whai transport wheel frame 5, and a screw 4 is housed in Into corresponding screw holes of the transport frame body 5. The transport frame 5 is provided with a plurality of threaded female holes 7 for attaching an actuated machine or other objects (not shown in the figure). 20 _ Rod 4 is screwed into the corresponding ‘hole through several circulating steel balls (not shown). When the screw 4 is rotated by an electric motor (not shown), the Dinghai transportation frame 5 moves linearly along the guide groove 2, and the linear bearing formed by the four rows of steel rings 6 allows the transportation frame The body 5 moves with very little friction and minimal movement. 6 565663 发明, invention description 5; ,,, and: In recent years, the positional accuracy of the transport frame 5 has become more and more necessary, and the conventional linear bearings of this type are not suitable for some applications. Because the steel balls are used to support the load, and the steel balls contact the opposite surface with points or small contact surfaces, the steel balls and / or the guide frame body are subject to a considerable or average load on the transport frame. 3 Easy to produce elastic deformation and this will lead to increased friction resistance and loss of position accuracy. / 10 When the transport frame 5 is subjected to a considerable upward load, as shown in FIG. 8a, the upper portions of the guide frame 3 will deform and move away from each other, as shown in FIG. 9 and A large part of the load is applied to the steel balls 6 in the upper row ... The transportation frame 5 receives a considerable downward load «, such as the load of the large P knife is applied to the steel balls 6 in the lower row. When the transport frame 5 is subjected to a considerable side load, as shown in Fig. 8c, the steel ball 6 corresponding to the side row is applied with a larger knife load. When the transport frame $ is subjected to a torsional load of -15, as shown in Fig. 8d, a large portion of the load is applied to the steel balls 6 corresponding to the diagonally opposite rows. As shown in these figures, when the transport frame 5 is subjected to an uneven load of g # J, the local parts of the steel balls 6 have most of the loads supported, and this is likely to cause considerable load.的 弹 形 0 [Summary of the Invention] 20 Summary of the Invention Based on the conventional problems, the present invention is essential, that is, to provide one. ㈣Hardness and friction-free linear bearings The second object of the present invention is to improve the durability of the improved linear 7 565663 发明, description of the actuator. The first object of this month is to provide an improved linear actuator which is provided with a device to eliminate the wandering caused by overtime. According to the present invention, a linear actuator is provided to achieve these objectives, which includes a guide frame body including a substrate defining an upper sliding surface, and a guide plate opposite to the substrate. The parallel and spaced relationship extends 'and defines the lower sliding surface and a pair of side sliding surfaces; a transport body is placed on the substrate, and an upper sliding surface is defined opposite to the lower sliding surface of the guide plate' and the lower sliding surface is opposite On the upper sliding surface of the base plate; and-the side plate extends in a laterally spaced relationship from a portion of the transport body to place the guide plate therebetween, and defines a side slide surface sliding relative to the side of the guide plate Surface; at least one pair of opposing sliding surfaces is defined by a sliding bearing member. 15 20 These sliding bearing members, which can be mainly made of porous carbon material, can provide a relatively low friction hard bearing surface, which can achieve a suitable and durable guide even when the transport frame is subjected to high and / or uneven loads.引 效应。 Lead role. And, because the lateral guidance is set by arranging the guide plate between the side plates, and the width of the opening between the side plates is relatively small compared with the conventional guide frame ' This ensures a fairly robust lateral guiding effect. Especially if a support plate for supporting-loading, such as a table, is connected across the free ends of the side plates, the side plates can be held more firmly by the support plate, and it can ensure stronger Lateral guidance. Since the vertical guide is opposed by the substrate and the guide plate at the lateral middle portion of the transport body, and the sliding surfaces of the substrate and the guide plate are mutually opposed at a substantially right angle 8 565663 发明, description of the invention It is set to 'thereby ensuring a solid vertical guidance effect. Generally, this linear actuator is additionally provided with a power actuator for actuating the transport body along the sliding surfaces. Since even if the sliding bearing members are not completely free from wear, the side plates should be adapted to adjust the gap between the side plates and the opposite sliding surface of the guide plate, and the guide plate is adapted to adjust the transportation The gap between the main body and the opposite sliding surface of the guide plate. This adjustment can be achieved by using a groove or other elongated hole as a mounting hole to allow a locking member such as a screw to pass through. Based on minimizing the lateral extent of the linear actuator, each of the sliding plates may be provided with an outward facing surface that is substantially flush with a corresponding side surface of the transport body. Brief description of the drawings details the present invention with reference to the drawings, in which: Fig. 1 is an exploded perspective view of the linear actuator using the present invention; Fig. 2 is a perspective view of the linear actuator; Figure 3 is a partial cross-sectional side view of the transport frame; Figure 4 is a schematic sectional front view of the linear actuator; Figures 5a and 5b are similar to Figure 4 and show how to remove the inside of the sliding surfaces Figure 6 is a perspective view of a second embodiment of the present invention; Figure 7 is a perspective view of a third embodiment of the present invention; Figures 8a to 8d are views showing a conventional linear actuator before being subjected to different types of cross sections View; and 9 565663 发明, description of the invention Fig. 9 is a view showing a possible form of deformation of the guide body of the conventional linear actuator. Front view C Embodiment 3 Detailed description of the preferred embodiment 5 Figs. 1 to 3 It is shown using the linear actuator 10 of this invention. The linear actuator 10 includes a rectangular substrate π, and a pair of end plates 12 and 13 are fixedly attached to the corresponding longitudinal ends of the substrate u in an upright direction. A rectangular guide plate 14 with a relatively large thickness extends between the upper ends of the end plates 12 and 13 so as to be opposite to the substrate U, so that the longitudinal direction of the substrate u and the guide plate 14 extends to the center. The lines are substantially aligned with each other. The base plate u, the end plate 12 and the guide plate 14 are connected to form a guide frame body. A transport frame 15 composed of a rectangular block is provided on the base plate 11 and the guide plate 14 with an upper sliding bearing member 16 and a lower sliding bearing member 17 in a manner that does not substantially cause any movement. between. A pair of side plates 18 15 and I9 are fixedly attached to one side portion of the upper surface of the transport frame body 15, and the guide plate 14 passes through the side sliding bearing members 20 and 21 so that there is substantially no Any way of swimming is provided between the side plates 18 and 19. The sliding bearing members 16 to 21 can be composed of any conventional bearing material including metal shaft 20 bearing material, plastic bearing material and other high hardness bearing materials. Metal bearing materials such as porous metal bearings filled with oil and metal bearings impeded by solid lubricants, plastic bearing materials such as pTFE resin and polyimide resin, other bearing materials such as wood or other porous carbon materials. The porous carbon material particularly suitable for use in the present invention is generally prepared by mixing various materials, such as wood or other plant materials, such as wheat hammer, and sintering the mixture to form a ceramic material. The resulting bearing material is generally called wood type or RB type bearing material, with low friction and resistance. This _ «has been used: 夂 is used 'because of its high durability and its resistance to dust and moisture because it does not require any lubricant. The sliding bearing members 16 to 21 may be attached to the transport frame M or the opposite guide plate 14 with an adhesive or any physical fixing configuration, and attached to the side plates 18 and 19 or the opposite plate. In the above-mentioned example, the substrates U and P are such that 4 and other sliding bearing members 16 to 21 are attached to the transport frame body one-to-one jade, 4 still, and 14 pairs; the surface of the poor j pieces 16 to 21 may be The transport frame 15 defined by soft steel or stainless steel components can be adapted to a spiral mechanism including a screw 23, actuated by a bead-shaped spiral mechanism, the bead-shaped one has a spiral groove defined therein and the screw receives the screw The nut 22 of 23 and a plurality of steel balls 36 are housed in a spiral groove defined by the joint of the screw 23 and the nut 22. The nut 22 is fixedly attached to the transport frame body 15, and the screw 23 is received in a screw hole of the nut 22 and extends into a central hole 35 of the transport frame body 15. The steel balls 36 are circulated in the spiral groove, and a low-friction, no-movement connection is achieved between the screw 23 and the nut 22 in a conventional manner. The screw 23 is rotatably supported by the front plate 12 at a middle end thereof through a bearing member 24 and extends through a central hole of the transport frame 15 in a cantilever manner. Stopper bodies 25 and 26 are attached to the opposite inner sides of the front and rear plates 12 and 13 to limit the travel range of the transport frame body 15. 565663 Chopping, invention description 5 10 " Hellow cup 23 疋 X is actuated by a rotary drive unit 27, the rotary drive unit 27 ^ ai pulley 29 is attached to the output shaft of the electric motor μ, a driven pulley 31 Attached to the corresponding ends of the screw 23, and an endless belt 30 passes around the pulleys 29 131. Therefore, by driving the electric motor 28, the screw 23 彳 is rotated in a desired direction. The deceleration driving sheet 27 is attached to the An 4 plate 32 fixedly attached to the front plate 12 in order. -A protective cover 33 is attached to the mounting plate 32 to cover a moving portion of the rotary driving unit 27. In the through target example, when the screw 23 is rotated by the rotation driving unit 27 and the transport frame 15 is actuated in any longitudinal direction, the guide plate 14 and the upper portion of the guide plate 14 and the transport frame 15 And the substrate connected to the lower surface can prevent
15 止该運輸架體15的任何垂直移動，而與該導引板14的側 部銜接之該等側板18及19可防止該運輸架體15的任何側 向移動。该等滑動軸承構件16至21是設於這些相互相對 的滑動表面之間。 如第3圖所示，該等側板18及19是固定地附接於該 運輸架體15的上表面之任一側端上，其是藉螺桿38穿入 該等對應側板18及19的安裝孔37,且螺入該運輸架體15 的對應螺孔39内。據此，一支撐板34延伸橫過該等側板 20 I8及19的上端，並附接於其上，其是藉螺桿41穿過該支 撐板34的對應安裝孔40，且螺入該等側板18及19的對 應螺孔42内。因此該支撐板34可將該等側板18及19的 自由端相互連接，且藉以強化該等侧板18及19，以免其 相互遠離的變形。如此有助於增加該導引架體的側向導引15 prevents any vertical movement of the transport frame 15, and the side plates 18 and 19 which are engaged with the sides of the guide plate 14 can prevent any lateral movement of the transport frame 15. The sliding bearing members 16 to 21 are provided between these mutually facing sliding surfaces. As shown in FIG. 3, the side plates 18 and 19 are fixedly attached to either side end of the upper surface of the transport frame body 15, and are installed by screwing through the corresponding side plates 18 and 19 by a screw 38 The holes 37 are screwed into the corresponding screw holes 39 of the transport frame 15. Accordingly, a support plate 34 extends across and attaches to the upper ends of the side plates 20 I8 and 19, which is passed through the corresponding mounting hole 40 of the support plate 34 by a screw 41 and screwed into the side plates 18 and 19 in the corresponding screw holes 42. Therefore, the support plate 34 can connect the free ends of the side plates 18 and 19 to each other, and thereby strengthen the side plates 18 and 19 to prevent the deformation of them away from each other. This helps to increase the lateral guidance of the guide frame body
12 565663 玖、發明說明 作用之堅固性。 由於相較於習用軸承使用珠體及滚輪分別以點及線接 觸’此配置的該等滑動表面之間是以面接觸，因此提供一 高支撐堅硬性。因此，即使當受到一相當大負載，仍可防 5止因其所發生的彈性局部變形，且如此可防止摩擦阻力且 改善该運輸架體於運動方向及垂直於運動方向的方向二者 之定位準確度。 並且，當該運輸架體15受到如第8a至8d圖任一種的 不均勻負載時’所施予的負載受到一相當大的表面積所支 10標’因此於任一情況時皆可確保適當低的摩擦阻力及高定 位準確度。根據發明人所作的測試，其顯示優於習用線性 致動器之改良當該運輸架體15受到可能會扭轉該運輸架體 的不平均負載時特別顯著。並且，以長期過度負載的測試 亦顯示較優於習用線性滑動器。 15 當任一滑動軸承構件已磨損時，且該等相對表面之間 產生間隙時，其可藉鬆脫該等側板18及19的螺桿38，且 將該等側板相近移動而消除，以於再次緊固該等螺桿之前 消除此間隙。為此目的，該等側板丨8及19的安裝孔38以 及該支撐板34的安裝孔40可形成側向橢圓形以配合此調 20整。或者或同步地，該等前及後板12及13的安裝孔可以 預定方向伸長，以配合該導引板14的位置調整。 第6圖顯示本發明的第二實施例，其使用一氣動致動 器，包括一附接於該前板12上的汽缸51，及一活塞桿52 ，該活塞桿52延伸於該汽缸51外且穿過該前板12。該活 13 565663 玖、發明說明 基才于52的内端連接於一滑動地納置於該汽缸51内之活塞 (圖中未顯示），且該活塞桿52的自由端連接於該運輸架 體15。該汽缸51設置有一對埠口 53及54，用以如習知技 藝進給及釋放空氣以致動該活塞。 5 第7圖顯示本發明的第三實施例，其使用一線性馬達 致動器’包括一定子61，其延伸於該基板u的上表面上 以提供所需磁場。該運輸架體15的底表面設置有永久磁性 件（圖中未顯示），以適於與該定子61或一銅板（圖中未 顯不）所產生的磁場共同用以對應於該定子61所產生的磁 10 場而產生渦電流。 儘管本發明已就本發明之較佳實施例詳細說明，凡熟 於此技藝人士可作不同替代及變更而不脫離本發明申請專 利範圍中所提之範圍。舉例來說，該線性致動器用之動力 源並不侷限於上述者，而可由任何用以線性移動該運輸架 15 體之習用動力致動器所構成。 【圓式簡單說明】 第1圖是使用本發明的線性致動器之分解透視圖； 第2圖是該線性致動器之透視圖； 第3圖是該運輸架體之部分剖面側視圖； 20 第4圖是該線性致動器之示意剖面前視圖； 第5a及5b圖是類似於第4圖’而顯示如何去除該等 滑動表面内的間隙； 第6圖是本發明第二實施例之透視圖； 第7圖是本發明第三實施例之透視圖； 14 565663 玖、發明說明 第8a至8d圖是顯示一習用線性致動器受到不同種類 之剖面前視圖；及 第9圖是顯示該習用線性致動器的導引架體的變形的 一可能形式之前視圖 5 【圖式之主要元件代表符號表】 習知部分： 24…軸承構件 1…基部 2526···掣止體 2…導槽 27…旋轉驅動單元 3…導引架體 28···電動馬達 4…螺桿 29…主滑輪 5…運輸架體 30…環狀皮帶 6…循環鋼珠 31…從動滑輪 7…螺紋安裝孔 32…安裝板 本發明部分： 33…保護蓋 10…線性致動器 34…支樓板 11…勒反 35···中心子L 12，13…端板 37,40···安裝孔 14…導引板 38,41…螺桿 15…運輸架體 39,42…螺孔 16，17…上，下滑動軸承構件 51…汽缸 18，19…側板 52"·活塞桿 20,21···側滑動軸承構件 53,54…埠口 22…螺帽 61…定子 23…螺桿12 565663 发明, description of the invention Compared with the conventional bearing, which uses beads and rollers to contact with points and wires, respectively, the sliding surfaces in this configuration are in surface contact, thus providing a high support rigidity. Therefore, even when subjected to a considerable load, it can still prevent the local elastic deformation due to its elasticity, and thus can prevent frictional resistance and improve the positioning of the transport frame in the direction of movement and the direction perpendicular to the direction of movement. Accuracy. Also, when the transport frame 15 is subjected to an uneven load as shown in any of Figs. 8a to 8d, 'the applied load is supported by a relatively large surface area, 10 marks', so that it can be appropriately low in any case. Friction resistance and high positioning accuracy. According to tests made by the inventors, it has been shown that the improvement over the conventional linear actuator is particularly significant when the transport frame 15 is subjected to an uneven load that may twist the transport frame. In addition, tests with long-term excessive loads have shown to be superior to conventional linear sliders. 15 When any sliding bearing member is worn and a gap is created between the opposite surfaces, it can be eliminated by loosening the screws 38 of the side plates 18 and 19 and moving the side plates close to each other, so as to eliminate again Eliminate this clearance before tightening the screws. For this purpose, the mounting holes 38 of the side plates 8 and 19 and the mounting holes 40 of the support plate 34 may form a lateral ellipse to fit the adjustment. Alternatively or simultaneously, the mounting holes of the front and rear plates 12 and 13 may be extended in a predetermined direction to match the position adjustment of the guide plate 14. FIG. 6 shows a second embodiment of the present invention, which uses a pneumatic actuator including a cylinder 51 attached to the front plate 12 and a piston rod 52 that extends outside the cylinder 51 And pass through the front plate 12. The job 13 565663, the invention description base is connected to a piston (not shown in the figure) slidingly received in the cylinder 51 at the inner end of the 52, and the free end of the piston rod 52 is connected to the transport frame 15. The cylinder 51 is provided with a pair of ports 53 and 54 for feeding and releasing air to actuate the piston as is known in the art. 5 FIG. 7 shows a third embodiment of the present invention, which uses a linear motor actuator 'including a stator 61 which extends on the upper surface of the substrate u to provide a required magnetic field. The bottom surface of the transport frame 15 is provided with a permanent magnetic member (not shown in the figure), which is suitable to cooperate with the magnetic field generated by the stator 61 or a copper plate (not shown in the figure) to correspond to the stator 61. The resulting magnetic field produces an eddy current. Although the present invention has been described in detail with reference to the preferred embodiments of the present invention, those skilled in the art can make different substitutions and changes without departing from the scope mentioned in the patent scope of the present application. For example, the power source for the linear actuator is not limited to the above, but may be composed of any conventional power actuator for linearly moving the transport frame 15 body. [Circular brief description] Figure 1 is an exploded perspective view of the linear actuator using the present invention; Figure 2 is a perspective view of the linear actuator; Figure 3 is a partial cross-sectional side view of the transport frame; 20 Figure 4 is a schematic sectional front view of the linear actuator; Figures 5a and 5b are similar to Figure 4 'and show how to remove the gaps in the sliding surfaces; Figure 6 is a second embodiment of the present invention Fig. 7 is a perspective view of a third embodiment of the present invention; 14 565663 发明. Description of the invention Figs. 8a to 8d are front views showing different types of cross sections of a conventional linear actuator; and Fig. 9 is Front view showing a possible form of deformation of the guide frame body of the conventional linear actuator 5 [The main elements of the figure represent the symbol table] Known part: 24 ... bearing member 1 ... base 2526 ... stopper body 2 ... Guide groove 27 ... Rotary drive unit 3 ... Guide frame 28 ... Electric motor 4 ... Screw 29 ... Main pulley 5 ... Transport frame 30 ... Endless belt 6 ... Circular steel ball 31 ... Driven pulley 7 ... Threaded mounting hole 32 ... Mounting plate Part of the invention: 33 ... Cover 10 ... Linear actuator 34 ... Support floor 11 ... Reverse 35 ... Central element L 12, 13 ... End plate 37, 40 ... Mounting hole 14 ... Guide plate 38, 41 ... Screw 15 ... Transport Frames 39,42 ... Screw holes 16,17 ... Upper and lower sliding bearing members 51 ... Cylinders 18,19 ... Side plates 52 " Piston rods 20,21 ... Side sliding bearing members 53,54 ... Ports 22 ... Screws Cap 61 ... stator 23 ... screw
1515