M376206 五、新型說明： 【新型所屬之技術領域】 本創作係有關於一種滑軌結構，特別是指一種能加長滑轨之延伸效 果’且結構精簡確實、作動順暢而具有較佳操作性之具自動歸位之延長式 滑軌裝置。 【先前技術】 按’現行抽拉式播體或抽展等係大量應用於各種收容、貯藏器具，為 φ 便利櫃體(抽屜）之抽拉操作，該櫃體(抽屜）通常係結合兩側滑執之定位導 滑使用，且為便利櫃體(抽展)推合時之穩定閉合，該滑執係進一步結合有 一自動歸位機構，當櫃體(抽屜)推送至末段時，該自動歸位機構將使櫃體 (抽屜）受拉引而自動後送，且處於穩定之閉合狀態。習知相關滑轨之自動 歸位技術如第一圖所示，其包括有相繼滑設之底執9〇、中執91及内執犯； 一控制座93係固設於底軌90，該控制座93設有一緩衝件93卜彈簧932 及向前延伸一導板933 ’該導板933設有一導槽934及該導槽934前端之偏 鲁斜槽935， 盘94係滑設於該控制座93上，該滑蓋94前端並與該緩衝 -件93卜彈簧932相連結，該滑蓋94上設有一作動槽941 :一擺動件95係 滑設於該導板933之導槽934，並設於該滑蓋94之作動槽941處；一連動 件96係固設於該内軌92之一定位孔921，並與該擺動件95產生連動以 達到滑轨操作上具自動歸位之效果。 前述該習知技術雖可達到抽屜自動回收之功能，但由於該連動件96所 固結之定位孔921位置，其至内執92之後端尚有一段距離，如此將使得内 軌92之拉伸長度受到該定位孔921位置之限制，即損失該定位孔拟後段 M376206 之内軌92長度_，而使得其拉伸長度效果並非最佳、妨想之設計；再 者’由於該猶件95、滑蓋94及連動件96間之構成複雜，在操作上容易 產生失誤或不順暢現象’亦有—併改善之必要。因此，如何改善習知此類 具自動歸位之滑執技術該等缺失問題，縣業界努力解決克服之重要方 緣此，本創作人有鑑於習知滑軌自動歸位技術使用上的缺點及其結構 设計上未臻理想之事實’本賴作人即著手研發其解決㈣，希望能開發 出-種更具可延長性、順暢性及_性之具自動歸位之延長式滑執裝置， 以服務社會大眾疏進此業之發展，遂轉時之構思而有本翁之產生。 【新型内容】 本創作之目的係在提供一種具自.動歸位之延長式滑執裝置，其能加長 滑執之延伸效果，而具有更佳之操作應用性，且整體自動歸位作動具有極 佳之順暢性及作動質感，並具有作動碟實不易故障及組裝容易之優點，進 而積極提昇其實用性及產品競爭力者。 本創作為達到上述目的所採用之技術手段係包括：一底執，其具有一 底轨空間；一中軌，係滑設於該底執空間内，該中執具有一中軌空間；一 内執’係滑設於該中軌空間’該内執之後端臨接處係設有一定位孔；一控 制座，係固設於該底軌之後端處，該控制座係設有一滑槽，該滑槽之前端 係形成有一槽抵端及偏斜槽，·一滑動蓋件，係滑動蓋設於該控制座，該滑 動蓋件與該控制座間連結有至少一彈簧，該滑動蓋件後端設有一橢穿孔； 一擺動件，係設於該控制座與該滑動蓋件之間，該擺動件頂面設有一凸伸 出該橢穿孔之凸柱及底面設有一導肋，該導肋係滑設於該滑槽内；一連動 M376206 件’係固結於該内軌之該定位孔’該連動件之底面係設有一連動槽，該連 動槽包括有後端之一接口槽及前端之斜抵槽，該連動槽係供該凸柱之插設 傳動連結。 兹為使貴審查委員對本創作之技術、特徵及所達成之功效更有進一步 之瞭解與認識，謹佐以較佳之實施例圖及配合詳細之說明，說明如後： 【實施方式】 請參閱第2、3、4圖，本創作具自動歸位之延長式滑軌裝置其包括有： 一底軌10、中軌20、内軌30，該底軌10係固設於一櫃體上（未圖示），該 底執10具有一底軌空間11，該底轨1〇後端係設有固定孔;該中執2〇 係滑設於該底軌10之底軌空間11内，該中軌2〇具有一中軌空間21;該内 軌30係固結於一抽屜或櫃體（未圖示），該内轨3〇係滑設於該中轨2〇之中 軌空間21，該内執30之内軌後端31臨接處係設有一定位孔32，該定位孔 32係可為一方形孔；再者，本創作進一步包括： 一控制座40 ’該控制座40設有兩側之緩衝件41及該緩衝件内側之二 彈簧槽42，該緩衝件41後端係固結於該控制座40後端之端座部45，該彈 簧槽42係設有一彈簧44,該彈簧44 一端係固設於後方端座部45處之一夾 結部421 ’該端座部45處並設有固定孔46，藉該固定孔46固設(如螺固） 於該底軌10後端之固定孔12處，並使該控制座40定位於該底軌空間11 内；該控制座40約中央位置係設有一滑槽43，該滑槽43之前端係形成有 一偏斜槽431及槽抵端432。 一滑動蓋件50 ’係滑動蓋設於該控制座40，該滑動蓋件50設有兩側 對應之緩衝容槽51及底面之彈簧槽52，用以分別對該緩衝件41及彈簀44 M376206 產生罩護’其中該緩衝件41之前端係固結於該緩衝容槽51前端之夾口部 510 ’該彈簧44之前端係固結於該彈簧槽52前端之卡結部521 ;該滑動蓋 件5〇後_中央部位係設有一斜狀之橢穿孔53，該滑動蓋件50之頂面係 設有-容EJ部54 ’該容凹部54係被雜穿孔53所貫穿連通。 一擺動件60 ’係設於該控制座4〇與滑動蓋件50之間，該擺動件60略 呈一偏斜狀之三角形體，其設有頂面之—凸柱61及底面之—導肋62，該凸 柱61係穿設凸伸出該滑動蓋件50之橢穿孔53，該導肋62係略呈側偏之設 置’其係滑設於該控制座4〇之滑槽43内。 一連動件70，係略呈-方形塊體，其係設於該滑動蓋件5〇之容凹部 54處’該連動件7G之頂面係設有—固結部71，細結部71係固結於該内 軌30之定域姒如第2圖所示）’使該連動件7Q可隨軸㈣卜體連動； 該連動件70之底祕設有_連動槽72，棘_ 72包括紐端之一直狀 接口槽720、繼接續之側調節槽721及前端之斜抵槽您；又，前述該猶 件60之凸柱61在穿筋伸出該滑動蓋件5()之前孔53後並插入該連動 槽72(如第6圖所示使該連動件70可連動該擺動件6〇，並使該擺動件 60藉其導肋62於該控制座40之滑槽43内滑移。 請-併參閱第7圖，本創作具自動歸位之延長式滑軌裝置操作時，當 祕（«體德行脉時’該嶋3〇贿向雜伸滑動並連_連動件7〇 位移，該連動件70繼拉動該擺動件6Q之凸柱61，使魏動件6Q通過其導 肋62於該控制座40之滑槽43向前滑移，同時該滑動蓋件5〇向前即使 該滑動蓋㈣減雜制座40轉作動，鱗該緩衝件41、彈簧44係逐 漸呈拉伸狀態。M376206 V. New description: [New technology field] This creation department is about a kind of slide rail structure, especially one that can extend the extension effect of the slide rails and has a compact structure, smooth operation and better operation. Automatic homing extension rail unit. [Prior Art] According to the 'current pull type broadcast or drawing, etc., it is widely used in various storage and storage utensils, and is the drawing operation of φ convenient cabinet (drawer). The cabinet (drawer) is usually combined with both sides. The sliding position is used for guiding and sliding, and in order to facilitate the stable closing of the cabinet (draw), the sliding system is further combined with an automatic homing mechanism. When the cabinet (drawer) is pushed to the end, the automatic The homing mechanism will automatically pull back the cabinet (drawer) and pull it in a stable closed state. The automatic homing technology of the related related slide rails is as shown in the first figure, which includes the bottom slides of the successive slides, the middle handle 91 and the inner shackles; a control seat 93 is fixed on the bottom rail 90, the control The seat 93 is provided with a buffer member 93 and a spring 932 and a guide plate 933 extending forward. The guide plate 933 is provided with a guide groove 934 and a deflecting groove 935 at the front end of the guide groove 934. The disk 94 is slidably disposed on the control seat. The front end of the sliding cover 94 is coupled to the buffer member 93 and the spring 932. The sliding cover 94 is provided with an actuating groove 941: a swinging member 95 is slidably disposed on the guiding groove 934 of the guiding plate 933, and The locating member 96 is fixed on the positioning hole 921 of the inner rail 92, and is coupled with the oscillating member 95 to achieve automatic homing effect on the sliding rail operation. . Although the prior art can achieve the function of automatic drawer recovery, due to the position of the positioning hole 921 to which the linking member 96 is fixed, there is still a distance from the rear end of the inner holder 92, which will cause the inner rail 92 to stretch. The length is limited by the position of the positioning hole 921, that is, the length of the inner rail 92 of the positioning hole M376206 is lost, so that the effect of the stretching length is not optimal and the design is conceivable; The structure between the slider 94 and the linkage member 96 is complicated, and it is easy to cause mistakes or unsmooth operation in operation, and it is necessary to improve. Therefore, how to improve the shortcomings of this kind of slipping technology with automatic homing, the county industry is trying to solve the important problem of overcoming, the creator has the shortcomings of the use of the automatic rail homing technology. The fact that the structural design has not been ideal is that the company is working on the development of its solution (4), hoping to develop an extended sliding device with automatic homing that is more extendable, smooth and _ sex. In order to serve the public, the development of this industry has been carried out. [New content] The purpose of this creation is to provide an extended sliding device with self-propelled homing, which can extend the extension effect of the sliding, and has better operational applicability, and the overall automatic homing action has a pole. It has the advantages of smoothness and actuation, and it has the advantages of being easy to malfunction and easy to assemble, and thus actively improving its practicability and product competitiveness. The technical means adopted by the present invention to achieve the above purposes include: a bottom handle having a bottom rail space; a middle rail, the slide is disposed in the bottom hold space, and the middle handle has a middle rail space; a sliding hole is disposed in the middle rail space, and a positioning hole is disposed at a rear end of the inner end; a control seat is fixed at a rear end of the bottom rail, and the control seat is provided with a sliding slot, the sliding The front end of the groove is formed with a groove abutting end and a deflecting groove. A sliding cover member is disposed on the control seat, and at least one spring is coupled between the sliding cover member and the control seat, and the rear end of the sliding cover member is disposed The oscillating member is disposed between the control seat and the sliding cover member. The top surface of the oscillating member is provided with a protruding post protruding from the ellipsoid and a bottom surface is provided with a guiding rib. The M376206 is affixed to the positioning hole of the inner rail. The bottom surface of the linking member is provided with a linkage groove, and the linkage groove includes an interface groove at the rear end and a slant of the front end. The slot is provided for the insertion and transmission of the boss. In order to give your reviewers a better understanding and understanding of the technology, features and efficacies of this creation, please refer to the preferred embodiment diagram and the detailed description as follows: [Embodiment] Please refer to 2, 3, 4, the extended slide rail device with automatic homing includes: a bottom rail 10, a middle rail 20, and an inner rail 30, the bottom rail 10 is fixed on a cabinet (not The bottom handle 10 has a bottom rail space 11 , and the bottom rail 1 has a fixing hole at the rear end thereof; the middle handle is slidably disposed in the bottom rail space 11 of the bottom rail 10 , the middle rail 2〇 has a middle rail space 21; the inner rail 30 is fixed to a drawer or a cabinet (not shown), and the inner rail 3 is slidably disposed in the rail space 21 of the middle rail 2〇, The positioning end hole 32 of the inner end of the rail 30 is provided with a positioning hole 32, and the positioning hole 32 can be a square hole; further, the creation further comprises: a control seat 40' The buffer member 41 and the two spring slots 42 on the inner side of the buffer member, the rear end of the buffer member 41 is fixed to the end seat portion 45 of the rear end of the control seat 40, the spring slot 42 A spring 44 is disposed, and one end of the spring 44 is fixed at one end portion 45 of the rear end portion 45 and is provided with a fixing hole 46, and is fixed by the fixing hole 46 (for example, screwing) ) at the fixing hole 12 at the rear end of the bottom rail 10 and positioning the control seat 40 in the bottom rail space 11; the control seat 40 is provided with a sliding slot 43 at a central position, and the front end of the sliding slot 43 A deflecting groove 431 and a groove abutting end 432 are formed. A sliding cover member 50' is slidably disposed on the control seat 40. The sliding cover member 50 is provided with a corresponding buffer groove 51 and a bottom surface spring groove 52 for respectively respectively for the buffer member 41 and the magazine 44. The M376206 generates a cover ′ in which the front end of the buffer member 41 is fixed to the front end of the buffer tank 51. The front end of the spring 44 is fixed to the front end of the spring groove 52. After the cover member 5 is formed, a slanted elliptical hole 53 is formed in the central portion, and the top surface of the sliding cover member 50 is provided with a --shaped EJ portion 54' which is penetrated by the inter-perforation 53. An oscillating member 60' is disposed between the control seat 4 〇 and the sliding cover member 50. The oscillating member 60 has a slightly triangular body, which is provided with a top surface - a protrusion 61 and a bottom surface. The rib 62 is disposed through the elliptical hole 53 protruding from the sliding cover member 50. The guiding rib 62 is disposed in a slightly offset manner. The sliding rib 62 is disposed in the sliding groove 43 of the control seat 4 . A linking member 70 is a slightly-square block, which is disposed at the recess 54 of the sliding cover member 5'. The top surface of the linking member 7G is provided with a consolidating portion 71, and the thinning portion 71 is The splicing of the inner rail 30 is as shown in FIG. 2). The straight interface groove 720 of the new end, the side adjusting groove 721 of the connecting end and the oblique abutting groove of the front end; further, the protrusion 61 of the above-mentioned jade 60 protrudes before the sliding cover 5 () protrudes from the hole 53 Then, the interlocking groove 72 is inserted (as shown in FIG. 6 , the linking member 70 can interlock the swinging member 6 〇, and the swinging member 60 is slid in the sliding slot 43 of the control seat 40 by the guiding rib 62 . Please - and refer to Figure 7, when the extended slide rail device with automatic homing is operated, when it is secret (the body is in the veins of the body), the 〇3〇 bribe to the miscellaneous stretch and the _ linkage 7 〇 displacement The linking member 70 then pulls the protruding post 61 of the swinging member 6Q, so that the spring member 6Q slides forward through the guiding rib 62 of the sliding seat 43 of the control seat 40, and the sliding cover member 5 forwards even if The sliding cover (four) minus Block transfer system 40 actuated scales the buffer member 41, the spring 44 gradually in a stretched state by the Department.
IS 請-併參閱第8A、8B圖，當該連動件7G持續向前而使該擺動件60之 導助62抵於該滑槽43之槽抵端432時該擺動件如（導肋犯)將受拉引而 向該偏斜槽431偏斜，且該&柱61相對於該橢穿孔53内產生偏移並使 凸柱61由細| 722移至對應該接口槽72〇之方向位置繼而使該凸柱Μ 隨著拉力從該接口槽720脫離連動槽72，即麵動件6〇脫離該連動件7〇 之連動，此時藉*該連動件7〇與該擺動件6〇、滑動蓋件5〇之分離，使該 内軌30、連動件7G得以隨抽屜或櫃體之抽拉操作繼續向前作動以完成抽 展或概體之抽拉開啟操作；該擺動㈣卿該彈簧44對滑動蓋件50之拉 力’使其導肋62向後抵制於該偏斜槽431而定位，並使該滑動蓋件5〇處 於暫定位狀態，如第8B圖所示，且該彈簧44也呈現最終之拉伸狀態。 在前述抽屜或櫃體之⑽操作時，該_3請機中執2()上滑動延 伸’當該滑動蓋件50作動時，料執⑼亦受該滑動蓋·之推動及内執 30之帶動而滑動延伸’而至抽屜或_呈現最終拉開狀態。 請-併參閱第9A圖，當減或櫃體進行後推閉合操作時，該内執3〇、 中軌20將相繼被抽展（或櫃體)之向後推動而位移縮合，而該連動件也 隨著該内執30後移’繼該連動件7〇之接口槽72〇對應接觸該擺動件之 凸柱61時’該凸柱61將隨著連動件70之靠合而進入該連動槽72内，如 第9B圖所示，然後再藉著連動件7〇之後續靠合推力而產生偏斜進入該斜 抵槽722處’此時由於該連動件7〇之偏斜作動，復使其導肋62脫離該槽 抵端432之抵制而重新對位該滑槽奶，繼受該彈菁44之回復拉力，使滑動 1·#50向後〇第9C圖所示；）’此時該内軌3〇、抽履（或檀體）即產生自動 回歸之作用’並藉著該緩衝件41之緩衝作帛，使產生緩和之閉合操作質感’ /()206 當該、滑動蓋件50滑至復位於該控制座4〇後端之端座部45位置時即定位平 衡’而完成抽屜或櫃體自動歸位之操作功能。 繼請參閱第10圖，本創作進一步於該中轨2〇之前端兩側設有一卡制 孔22、23及中央部位之一固定孔24 ;另，一緩衝抵件8〇，該緩衝抵件8〇 之上方兩側係設有一_^制部81、82及中央部位之一固定孔83，該卡制部 81、82係分別卡制於該卡制孔22、23，且通過該固定孔24、83之固結（如 螺固）’使該緩衝抵件80固結於該中執2〇之前端處，該緩衝抵件8〇之兩 側係設有一側護部84，該緩衝抵件80之前端係設有一對彈性曲臂85及該 對彈性曲臂85間之-絲86，目此倾嶋3G靠合射執20時，該内執 30前端之端板33通過該彈性曲臂85、抵柱86之牴觸，得以達到緩衝、靜 證效果，避免金屬碰撞聲響，同時該中軌2〇靠合該紐1〇，藉該顺部 84也具有此效果。 由於本創作利用該擺動件及連動件之簡易構成及互動設置，使得本創 作具有極佳之運作順暢性及作動質感，並具有作動確實不易故障及組裝容 易之優點。从重要的是，本_職連麟設__之後端臨接處， 使得其能增長誠之、延伸效果’而具有更佳之操作應雜，進而積 極提昇其實用性及產品競爭力。 綜上所述，本創作讀已符合新型專利之要件，差依法提出專利甲請。 惟以上所述者’僅林創倾佳實施_已，並糾祕定摘作實施之 範圍，故舉凡依本創作申請專利範圍所述之形狀、構造、特徵及精神所為 之均等變化絲飾’均聽括於本創叙冑料利範圍内。 【圖式簡單說明】 第1圖係習知滑執之自動歸位結構示意圖。 第2圖係本創作之分解示意圖。 第3圖係本創作之局部分解示意圖一。 第4圖係本創作之局部分解示意圖二。 第5圖係本創作之組合示意圖。 第6圖係本創作之組合上視示意圖。 第7圖係本創作之拉伸操作示意圖一。 第8A圖係本創作之拉伸操作示意圖二。 第8B圖係本創作之拉伸操作示意圖三。 第9A圖係本創作之推合操作示意圖一。 第9B圖係本創作之推合操作示意圖二。 第9C圖係本創作之推合操作示意圖三。 第10圖係本創作之緩衝抵件結構示意圖。 【主要元件符號說明】 底執10 中軌20 内轨30 底軌空間11 固定孔12 中執空間21 内軌後端31 定位孔32 控制座40 緩衝件41 彈簧槽42 端座部45 彈簧44 夾結部421 固定孔46 端板33 M376206 滑槽43 偏斜槽431 槽抵端432 滑動蓋件50 緩衝容槽51 彈簧槽52 夹口部510 卡結部521 橢穿孔53 容凹部54 擺動件60 凸枉61 導肋62 連動件70 固結部71 連動槽72 接口槽720 側調節槽721 斜抵槽722 固定孔24 卡制孔22、23 緩衝抵件80 卡制部81、82 固定孔83 側護部84 彈性曲臂85 抵柱86IS - and referring to Figs. 8A, 8B, when the linkage 7G continues to advance and the guide 62 of the oscillating member 60 abuts against the groove abutment end 432 of the chute 43, the oscillating member (such as a guide rib) Will be pulled to deflect the deflection groove 431, and the & column 61 is offset relative to the inside of the ellipsoid 53 and the protrusion 61 is moved from the thin | 722 to the position corresponding to the interface groove 72 Then, the protruding post 脱离 is disengaged from the interface slot 720 by the pulling force, and the engaging member 6 〇 is disengaged from the linking member 7〇. At this time, the linking member 7〇 and the swinging member 6〇, Separating the sliding cover member 5, so that the inner rail 30 and the linking member 7G can continue to move forward with the pulling operation of the drawer or the cabinet to complete the drawing or opening pulling operation of the general body; the swinging (four) clearing the spring 44 the pulling force of the sliding cover member 50 is such that the guiding rib 62 is rearwardly resisted by the deflection groove 431, and the sliding cover member 5 is temporarily positioned, as shown in FIG. 8B, and the spring 44 is also Presenting the final stretched state. When the drawer or the cabinet (10) is operated, the _3 is required to perform the sliding extension of the machine 2 (). When the sliding cover 50 is actuated, the material (9) is also driven by the sliding cover and driven by the inner 30 The slide extends 'to the drawer or _ to present the final open state. Please - and refer to Figure 9A, when the reduction or the cabinet is pushed back and closed, the inner 3 s, the middle rail 20 will be successively pushed (or the cabinet) to push backward and displace the condensation, and the linkage The post 61 is moved back to the interlocking groove 61. The post 61 of the linking member 7 〇 corresponds to the protruding post 61 of the oscillating member. The stud 61 will enter the linking slot as the linking member 70 abuts. 72, as shown in Fig. 9B, and then deflected into the oblique abutment groove 722 by the subsequent abutment thrust of the linkage member 7'. At this time, due to the deflection of the linkage member 7, the re-enactment The guide rib 62 is disengaged from the groove abutting end 432 to reposition the chute milk, and is subjected to the return tension of the elastic cyanine 44, so that the sliding 1·#50 is backwardly shown in FIG. 9C; The inner rail 3〇, the draw (or the sand body) is the function of the automatic return 'and the buffering action of the cushioning member 41 is used to make the ease of the closing operation texture ' / () 206 when the sliding cover 50 When the slide is reset to the position of the end seat portion 45 of the rear end of the control seat 4, the positioning balance is completed, and the operation function of automatically returning the drawer or the cabinet is completed. Referring to FIG. 10, the present invention further has a clamping hole 22, 23 and a fixing hole 24 at one of the central portions on the two sides of the front end of the middle rail 2; and a cushioning member 8〇, the cushioning member A plurality of fixing holes 83 are formed on both sides of the upper side of the cymbal 8 and 82, and the locking portions 81 and 82 are respectively engaged with the locking holes 22 and 23, and the fixing holes are passed through the fixing holes. The consolidation of 24, 83 (such as screwing) 'consolidates the cushioning member 80 at the front end of the middle handle 2, and the side of the cushioning member 8 is provided with a side guard 84, the cushioning member The front end of the 80 is provided with a pair of elastic bending arms 85 and a wire 86 between the pair of elastic bending arms 85. When the 3G is engaged with the shooting 20, the end plate 33 of the front end of the inner 30 passes through the elastic bending arm. 85. At the touch of the column 86, the buffering and static proof effect can be achieved, and the metal collision sound can be avoided. At the same time, the middle rail 2 〇 合 该 纽 纽 纽 纽 纽 纽 84 84 84 84 84 84 84 84 84 84 84 84 84. Since the creation uses the simple configuration and interactive arrangement of the swinging member and the linking member, the creation has excellent operational smoothness and action texture, and has the advantages that the actuation is not easy to malfunction and the assembly is easy. It is important that the _ _ lin lin ji _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ In summary, this creative reading has met the requirements of the new patent, and the patent is requested in accordance with the law. However, the above-mentioned only 'Lin Chuang's implementation is _ has been, and the scope of the implementation is limited, so the shape, structure, characteristics and spirit described in the scope of the patent application for this creation are equally varied. Both are included in the scope of this creation. [Simple description of the diagram] Figure 1 is a schematic diagram of the automatic homing structure of the conventional slipper. Figure 2 is an exploded view of the creation. Figure 3 is a partial exploded view of the creation of the original one. Figure 4 is a partial exploded view of the creation of the second. Figure 5 is a schematic diagram of the combination of the creation. Figure 6 is a schematic view of the combination of the creations. Figure 7 is a schematic diagram of the stretching operation of the present creation. Figure 8A is a schematic diagram of the stretching operation of the present creation. Figure 8B is a schematic diagram of the stretching operation of the present invention. Figure 9A is a schematic diagram of the push operation of this creation. Figure 9B is a schematic diagram 2 of the push operation of the present creation. Figure 9C is a schematic diagram of the push operation of this creation. Figure 10 is a schematic diagram of the buffering structure of the present creation. [Main component symbol description] Bottom 10 Middle rail 20 Inner rail 30 Bottom rail space 11 Fixing hole 12 Middle space 21 Inner rail rear end 31 Positioning hole 32 Control seat 40 Buffer 41 Spring groove 42 End seat 45 Spring 44 Knot Portion 421 Fixing hole 46 End plate 33 M376206 Chute 43 Skew groove 431 Groove end 432 Sliding cover 50 Buffer pocket 51 Spring groove 52 Jaw portion 510 Knot portion 521 Elliptical hole 53 Recessed portion 54 Swinging member 60 Convex 61 guide rib 62 linkage 70 consolidation portion 71 linkage groove 72 interface groove 720 side adjustment groove 721 oblique groove 722 fixing hole 24 locking hole 22, 23 cushioning member 80 locking portion 81, 82 fixing hole 83 side guard 84 elastic arm 85 to the column 86