M431630 五、新型說明： 【新型所屬之技術領域】 本創作係為一種滑執的定位回歸裝置（三），尤指可使該彈性件其彈 力置中而不偏移，而可避免或減少該固定座與滑動機構之間動作不順暢， 導致產品使用壽命降低之問題，進而可達到提升產品使用壽命及使用方便 性之功效。 【先前技術】 • 一般之滑軌定位回歸裝置，如中華民國專利證書號第1319465號「用於 滑軌機構之緩衝式自關裝置」，其中該滑軌機構包含一固定外框及至少一 個活動滑軌組2，該活動滑軌組2可包含一中滑軌21與一内滑軌22，該緩衝 式自關裝置則包含.一被固定於該固定外框上的固定座1〇，該固定座1〇設 有一線性導槽11及一與該線性導槽丨丨連通的斜向導槽12 ; 一被容置於該線 性導槽11内並可沿該線性導槽u做一線性往復運動的起動件13; 一被平行 設置於該線性導槽11 一侧面的活動座14，其與該起動件13形成同走運動的 ®樞接狀態，且其固設有一緩衝件15 ; —可對該起動件13施加一復位彈性作 用力的彈性件16 ;以及一設置於該活動滑軌組2其内滑軌22上的引動溝槽 221，該引動溝槽221與該起動件13其凸軸131相卡抵；其動作原理係利用該 活動滑軌組2之移動，而使該内滑軌22的引動溝槽221可帶動該起動件13沿 該線性導槽11位移，而使該起動件13的凸軸131可進入或移出該斜向導槽 12，而可控制該引動溝槽221與該起動件13之釋放分離或卡抵結合，同時可 切換該活動座14之拉伸定位或回歸復位，進而可達到使該滑執機構可自動 定位回歸之目的。 3 M431630 該「用於滑軌機構之緩衝式自關裝置」，其雖可達到使該滑執機構可 自動定位回歸之目的，但因該彈性件16與緩衝件15係分別平行設置於該線 性導槽11的兩側，也即該彈性件16係位於該活動座14一侧，而使該彈性件 16拉伸時其彈力對該活動座14所形成之施力點並未置中而有所偏移，因而 會形成一力矩，而容易導致該活動座14移位動作不順或機件因單邊受力而 磨損，進而造成產品壽命之降低與使用上之不便；此外，該緩衝式自關裝 置係設置於該滑軌機構其固定外框内，為了配合容置收納該緩衝式自關裝 •置’往往必須裁減該中滑軌21之長度，致使該活動滑執組2能向外拉伸之長 度受限’也會導致該滑軌機構其負載荷重能力降低，進而會使該滑軌機構 動作更不順暢且產品使用壽命減低。 又如中華民國專利證書號第顧62〇4號「滑軌之自動關閉裝置」，雖然 於兩側各使用-個彈簧而可避免彈簧施力不均之問題，但其結構複雜，且 因使用較多數量之彈簧，而會導致組裝費時及製造成本提高，因此仍有改 進之必要。 鲁是故’如觸上機__，㈣她齡所欲解決之技術 困難點之所在。 【新型内容】 有鑑於現有之滑軌定位回歸裝置，因其彈性件設於-側，而容易導致 該活動絲位動作獨錢件因單邊受力⑽損，進而造缝品壽命之降 低與使壯之顿，耻本_之目的在於紗—種雜的雜回歸裝置 (:)，藉由該固定座其第一固定部與滑動機構其第二固定部係設於中間 位而非兩側，而可使該彈性件其彈力置中而不偏移，而可避免或減少該 4 M431630 固定座與滑動機構之間動作不順暢或機件因單邊受力而磨損導致產品使 用哥命降低之問題’進而可使本創作可達到提升產品使用壽命及使用方便 性之功效。 為達成以上之目的’本創作係提供一種滑轨的定位回歸裝置（三）， 其包含： /月執機構’該滑軌機構包含有一外滑軌、一中滑軌與一内滑執該 内滑軌一端設有撥動部，該撥動部設有凹口部； 一固定座，細定顧設於該雜機構其外滑㈣，細定座一端的 中間位置対-第-目定部，顧定座崎有娜，又鋪溝—侧設有缺 口部； 一滑動機構，騎動機構與固定座相穿設，該滑動機構遠離該固定座 之端其中間位置設有-第二固定部，該滑動機構設有滑動轴，該滑動轴 穿設於固定座錢翻’該___魏，該職爪無滑動轴相M431630 V. New description: [New technical field] This creation is a sliding positioning reversal device (3), especially if the elastic member can be elasticized without offset, and can avoid or reduce the The movement between the fixed seat and the sliding mechanism is not smooth, which leads to the problem of lowering the service life of the product, thereby improving the service life and ease of use of the product. [Prior Art] • A general rail positioning regressing device, such as the Republic of China Patent No. 1319465 "buffering self-closing device for a slide rail mechanism", wherein the rail mechanism includes a fixed frame and at least one activity The slide rail group 2, the movable rail group 2 can include a middle slide rail 21 and an inner slide rail 22, and the buffer type self-closing device includes a fixing base 1 固定 fixed to the fixed outer frame, The fixing base 1 is provided with a linear guide groove 11 and a diagonal guiding groove 12 communicating with the linear guiding groove; a receiving portion is accommodated in the linear guiding groove 11 and can perform a linear reciprocating motion along the linear guiding groove u a movable member 14; a movable seat 14 disposed in parallel with a side of the linear guide groove 11, which forms a pivotal state with the starting member 13 in a moving motion, and is provided with a cushioning member 15; The starting member 13 applies a resilient member 16 for restoring the elastic force; and an urging groove 221 disposed on the inner slide rail 22 of the movable rail group 2, the urging groove 221 and the protruding shaft of the starting member 13 131 phase card offset; its action principle is to use the movement of the active slide group 2, and The driving groove 221 of the inner slide rail 22 can drive the starting member 13 to be displaced along the linear guide groove 11, so that the protruding shaft 131 of the starting member 13 can enter or move out of the oblique guiding groove 12, and the driving groove can be controlled. The slot 221 is separated from the release of the starting member 13 or is snap-fitted, and the tension positioning or the return reset of the movable seat 14 can be switched, thereby achieving the purpose of automatically positioning and returning the sliding mechanism. 3 M431630 The "buffer-type self-closing device for the slide rail mechanism" can achieve the purpose of automatically positioning and returning the slide mechanism, but the elastic member 16 and the buffer member 15 are respectively disposed in parallel with the linearity. The two sides of the guide groove 11, that is, the elastic member 16 is located on the side of the movable seat 14, and the elastic force of the elastic member 16 when the elastic member 16 is stretched is not centered on the movable point 14 The displacement is such that a moment is formed, which may cause the displacement of the movable seat 14 to be unsatisfactory or the mechanical parts to be worn due to the unilateral force, thereby causing a decrease in the life of the product and inconvenience in use; The closing device is disposed in the fixed outer frame of the sliding rail mechanism. In order to accommodate the buffering self-closing device, the length of the middle sliding rail 21 must be reduced, so that the movable sliding group 2 can be outwardly The limited length of the stretch will also result in a reduction in the load carrying capacity of the slide rail mechanism, which in turn will make the slide rail mechanism less smooth and the product life is reduced. Another example is the Republic of China Patent Certificate No. 62〇4 “Automatic Shutdown Device for Slide Rails”. Although the springs are used on both sides to avoid the problem of uneven spring force, the structure is complicated and used. A larger number of springs will result in increased assembly time and manufacturing costs, so there is still a need for improvement. Lu is the reason, such as the touch of the machine __, (four) the technical difficulties that she wants to solve. [New content] In view of the existing slide rail positioning and returning device, because the elastic member is disposed on the side, it is easy to cause the single-side force (10) damage of the movable wire position action, and the life of the seam-forming product is reduced. The purpose of making Zhuang Zhidun, shame _ is the yarn-mixing hybrid regressing device (:), by which the first fixing portion of the fixing seat and the sliding mechanism have their second fixing portion in the middle position instead of both sides , the elastic member can be elastically centered without offset, and the movement between the 4 M431630 fixing seat and the sliding mechanism can be avoided or reduced, or the mechanical parts can be worn due to the unilateral force, resulting in a decrease in the product life. The problem 'in turn, this creation can achieve the effect of improving product life and ease of use. In order to achieve the above objectives, the present invention provides a positioning and returning device for a slide rail (3), which comprises: a monthly mechanism, the slide rail mechanism includes an outer slide rail, a middle slide rail and an inner slide rail. One end of the slide rail is provided with a dialing portion, and the shifting portion is provided with a notch portion; a fixing seat is arranged to be arranged outside the sliding mechanism of the miscellaneous mechanism (four), and the intermediate position of one end of the fixed seat is 第-第目目, Gu Dingzhai has a na, but also grooved - the side is provided with a notch; a sliding mechanism, the riding mechanism is inserted with the fixed seat, the sliding mechanism is located away from the end of the fixed seat at the middle position - second fixed The sliding mechanism is provided with a sliding shaft which is inserted through the fixed seat to turn over the ___Wei, the claw has no sliding axis
軸接’又娜放;κ-端設有-被動件，崎放爪其被動件與制滑軌其撥 動部之凹π部相卡抵，該滑賴構尚包含有—彈性件，該彈性件一端與該 第二固定部細設’轉性件另1與制定座其第-固定部相固設； 藉由該固定座其第-固定部與滑動機構其第二固定部係設於中間位置 而非兩側，而可使該雜件其彈力置巾而不偏移，而可避免或減少該固定 座與滑誠狀麵觸物目_力蝴省產品使用壽 命降低之闕，《可使摘作可翻提升產品使㈣命及制方便性之 功效。 【實施方式】 5 M431630 為使貴審查員方便簡捷瞭解本創作之其他特徵内容與優點及其所達 成之功效能夠更為顯現，茲將本創作配合附圖，詳細說明如下. 請參閱第二圖、第三圖所示，本創作係提供—種滑叙的定位回歸裝置 (三），其包含： " 一滑執機構3’該滑軌機構3包含有一外滑執31、一中滑軌犯與一内 雜33，該中滑軌32滑接於該外賴31内，該内滑軌33滑接於中滑軌 32内’而使較小之滑軌可相龍大之滑軌滑動移位，又該滑轨機構3其各 參滑軌之詳細組構方式暨動作原理係屬先前技術且非本案技術特徵，故在此 不予詳述，斜籠31設有H孔31卜該騎軌33 _端設有撥動部 34，該撥動部34與該内滑軌33相連接固設，在本實施例中該撥動部34與 該内滑軌33係以沖壓方式一體成型，該撥動部34設有凹口部341 ; 一固定座4,該固定座4固設於該滑軌機構3其外滑軌31内，又該固 定座4設有-螺孔43與一固定件42，該固定件42穿過該螺孔妨及該外滑 軌31之第一透孔31卜俾使該固定座4與該外滑軌31相固設，該固定件 _ 42可為螺絲，該固定座4-端的中間位置設有一第一固定部41，又該固定 座4内尚包含有一收納部44，該收納部44之位置與該第一固定部41之位 置相對應，該固定座4内設有槽溝45，該槽溝45設於收納部44 一側，又 該槽溝45 —側設有缺口部46，該缺口部46設有拋弧面461 ; 一滑動機構5 ’該滑動機構5與固定座4相穿設，該滑動機構5遠離該 固定座4之一端其中間位置設有一第二固定部51，該第二固定部51之位置 與該固定座4其第-固定部41之位置相對應，該滑動機構5設有滑動軸52， 該滑動軸52 —端與第二固定部51相接設，在本實施例中該滑動軸52與該 6 M431630 第二固定部51係一體成形，該滑動轴52另一端穿設於固定座4其槽溝45 内，又該滑動軸52設有一被結合部521，該被結合部521可為凹孔咬為凸 塊，該滑動機構5設有釋放爪53，該釋放爪53 —端設有一結合部531，該 釋放爪53其結合部531與該滑動軸52其被結合部521相軸接，該結合部 531可為凸塊或為凹孔，又該釋放爪53另一端設有一被動件532，該釋放 爪53其被動件532與該内滑軌33其撥動部34之凹口部341相卡抵，又該 被動件532可為軸棒’該滑動機構5尚包含有一彈性件54，該彈性件54 — φ 端與該第二固定部51相固設’該彈性件54另一端與該固定座4其第一固 定部41相固設，俾使該彈性件54可收納容置於該固定座4其收納部44内， 又該彈性件54可為彈簧，當該滑軌機構3處於回歸復位或尚未拉伸之狀離 下，該滑軌機構3其中滑執32係可滑置於該固定座4的下方，而如第三圖 所示； 請參閱第二圖、第五圖所示，俾當使用者將採用本創作之傢俱如置物 櫃其抽屜向外拉出時，該滑軌機構3其内滑軌33即會向外滑動移位，藉由 •該内滑軌33其撥動部34之凹口部341卡抵該釋放爪53之被動件532，該 釋放爪53與該滑動轴52相軸接，而使該撥動部34可帶動該釋放爪53與 滑動轴52並使其在固定座4其槽溝45内水平移位，該滑動轴52可再帶動 該滑動機構5其第二固定部51水平移位，而使該第二固定部51可帶動並 拉伸該彈性件54，而使該彈性件54可產生一反向彈力，當該釋放爪53繼 續水平移位而使其被動件532之位置與該槽溝45其缺口部46之位置相辦 應時。月再配合參閱第六圖所示，藉由該撥動部34其凹口部341抵頂該釋 放爪53其被動件532，依照力的向量分解原理可知，該凹口部341於水平 7 M431630 移位時同時也會對該被動件532施加一垂直方向之力量，又藉由該釋放爪 53與該滑動機構5其滑動軸52相軸接，而使該撥動部34其凹口部34ι可 引導帶動該釋放爪53其被動件532朝該槽溝45其缺口部46之方向轉動移 位，再藉由該缺口部46設有拋弧面461，而可使該釋放爪53轉動並使其被 動件532較滑順地落入該槽溝45之缺口部46，同時也可減少機件之間的磨 擦並降低噪音，也即該釋放爪53其被動件532可與該撥動部34其凹口部 341为離，此時該滑執機構3其内滑軌汩或中滑軌犯即可繼續向外滑動， • 也即該使用者可繼續將該抽屜拉開至最大範圍，同時，藉由該釋放爪53其 被動件532落入該槽溝45之缺口部46，該彈性件54產生之反向彈力會使 該被動件532偏移抵頂的力量於該缺口部46，不易脫落，而使該滑動機構 5及彈性件54可繼續保持拉伸狀態。 凊參閱第七圖所示，當使用者將該抽屜推回時，該滑軌機構3其内滑 軌33及撥動部34即會朝與拉出抽屜時相反之方向滑動移位，而使該撥動 部34其凹口部341可抵頂該釋放爪53其被動件532,而可依前述之向量分 •解原理’使該凹口部341於水平移位時同時也對該被動件532施加-垂直 方向之力量，而使凹口部341可引導帶動該釋放爪53其被動件532朝靠近 該撥動部34其凹口部341之方向轉動移位，而可使該釋放爪53轉動並使 其被動件532落入該撥動部34其凹口部341内，同時，該釋放爪53其被 動件532即不再抵頂該槽溝45其缺口部46，又藉由該缺口部46設有拋弧 面461 ’而可使該被動件532較滑順地脫離該缺口部46，同時也可減少機 件之間的磨擦並降低噪音，請再配合參閱第八圖所示，而使該彈性件54之 反向彈力可帶動滑動機構5其釋放爪53之被動件532朝靠近固定座4之方 8 M431630 向水平移位，而使該被動件532可帶動該撥動部34及滑軌機構3其内滑軌 33或中滑執32自動回歸復位’也即可使該抽屜自動收回顏，進而可使本 創作逹到自動回歸復位之目的。 '月參閱第二圖、第三圖所示，藉由該固定座4其第一固定部41與滑動 機構5其第二固定部51係設於中間位置而非兩侧，而可使該彈性件％其 彈力置中而不偏移，而可避免或減少該固定座4與滑動機構5之間動作不 順暢或機件因單邊受力而磨損，導致產品使用壽命降低之問題，進而可使 籲本創作可達到提升產品使用壽命及使用方便性之功效：請再參閱第二圖、 第三圖所示，又藉由該固定座4設有收納部44，且該彈性件54可收納容置 於該收納部44内，而使該固定座4可減少其厚度且仍可保持結構之強度， 凊再配合參閱第四圖所示，俾使該雜機構3 _歸復位或尚未拉伸之狀 態時’該滑軌機構3其中滑軌32可滑置於該固定座4的下方，也即該中滑 軌32不須為了搭配該@定座4而裁減長度，因此在該滑軌機構3其外滑軌 31長度不變之條件下，本創作其中滑軌32之長度可較習用其中滑執21之 籲長度長’而可提升本創作其滑軌機構3能拉伸之長度，同時也可增加該中 滑轨32之負載荷重能力，進而可使本創作兼具達到更佳產品使用壽命之功 效。 請再參閱第二圖所示，藉由本創作僅需利用該内滑軌32其撥動部私 之凹口部341水平移位即可帶動該釋放爪54其被動件532轉動移位，而可 控制切換該撥動部34與釋放爪53之分離或結合卡抵，進而可切換該滑動 機構5之拉伸定贱回歸復位之狀態，且摘健需制—娜性件％， 而可簡化產品結構並降低製造成本，進而可使本到作可兼具結構簡化、組 9 M431630 裝快速及節省成本之功效。 為使本創作更加顯現出其進步性與實用性，兹與習用作一比較分钾如 下： 習用技術： 1、 彈性件其彈力之施力點未置中，容易造成機構動作不順與磨損。 2、 降低產品使用壽命。 本創作優點： 1、 彈性件其彈力之施力點置中不偏移，可避免或減少機構動作不順。 2、 可提升產品使用壽命。 3、 中滑軌可增加長度並提高荷重能力。 【圖式簡單說明】 第一圖係為習用之俯視示意圖。 第一圖係為本創作之分解示意圖。 第三圖係為本創作之組合示意圖。 第四圖係為本創作之側面剖視示意圖。 第五圖係為本創作於滑軌拉伸時之動作中示意圖。 第六圖係為第五圖之動作後示意圖。 第七圖係為本創作於滑轨復位時之動作中示意圖。 第八圖係為第七圖之動作後示意圖。 【主要元件符號說明】 10·..固定座 U...線性導槽 12··.斜向導槽 13...起動件 M431630 131…凸轴 14…活動座 15…缓衝件 16…彈性件 2···活動滑軌組 2l···中滑軌 22…内滑執 221…引動溝槽 3…滑軌機構 3l···外滑轨 311···第一透孔 32…中滑執 33…内滑軌 34…撥動部 341···凹口部 4…固定座 41…第一固定部 42…固定件 43…螺孔 44…收納部 45…槽溝 46···缺口部 46l···拋弧面 5…滑動機構 51…第二固定部 521…被結合部 53…釋放爪 53l···結合部 532…被動件 54…彈性件 11The shaft is connected to the 'lower side; the κ-end is provided with a passive member, and the passive member of the claw is engaged with the concave π portion of the sliding portion of the sliding rail, and the sliding structure further includes an elastic member. One end of the elastic member is finely disposed with the second fixing portion, and the second rotating portion is fixed to the first fixing portion of the fixing seat; the second fixing portion of the fixing portion is coupled to the sliding portion and the second fixing portion In the middle position instead of the two sides, the miscellaneous pieces can be elastically placed without deviation, and the fixing seat and the sleek surface contact object can be avoided or reduced. It can be used as a product that can be turned up and upgraded to make (4) life and convenience. [Embodiment] 5 M431630 To make it easier for your examiner to understand the other features and advantages of this creation and the effects achieved by it, please refer to the following figure for details. Please refer to the second figure. As shown in the third figure, the creation department provides a kind of locating positioning regression device (3), which includes: " A sliding mechanism 3' The sliding rail mechanism 3 includes an outer sliding 31, a middle sliding rail The inner slide rail 32 is slidably connected to the outer slide 31, and the inner slide rail 33 is slidably engaged in the middle slide rail 32, so that the smaller slide rail can slide with the slide rail of the dragon rail. Displacement, and the detailed structure and operation principle of each of the sliding rails of the sliding rail mechanism 3 are prior art and not technical features of the present invention, so it will not be described in detail here, and the inclined cage 31 is provided with an H hole 31. The slewing portion 33 is provided with a sliding portion 34. The sliding portion 34 is fixedly connected to the inner sliding rail 33. In the embodiment, the urging portion 34 and the inner sliding rail 33 are integrally formed by stamping. The dial portion 34 is provided with a notch portion 341; a fixing base 4 fixed to the outer rail 11 of the slide rail mechanism 3, and The fixing seat 4 is provided with a screw hole 43 and a fixing member 42. The fixing member 42 passes through the screw hole to block the first through hole 31 of the outer sliding rail 31 to make the fixing base 4 and the outer sliding rail 31. The fixing member _ 42 is a screw, and the first fixing portion 41 is disposed at an intermediate position of the fixing end of the fixing base 4, and the receiving portion 4 further includes a receiving portion 44, and the position of the receiving portion 44 is The fixing portion 4 is provided with a groove 45. The groove 45 is disposed on one side of the accommodating portion 44, and the groove 45 is provided on the side of the groove 45. The notch portion 46 is provided. A sliding surface 461 is provided; a sliding mechanism 5 ′ is disposed through the fixing base 4, and the sliding mechanism 5 is disposed at a position away from the end of the fixing base 4 to provide a second fixing portion 51. The second fixing portion The position of the portion 51 corresponds to the position of the first fixing portion 41 of the fixing base 4, and the sliding mechanism 5 is provided with a sliding shaft 52, and the end of the sliding shaft 52 is connected to the second fixing portion 51, in this embodiment. The sliding shaft 52 is integrally formed with the 6 M431630 second fixing portion 51. The other end of the sliding shaft 52 is disposed in the groove 45 of the fixing base 4, and the sliding The shaft 52 is provided with a joint portion 521. The joint portion 521 can be a concave hole, and the slide mechanism 5 is provided with a release claw 53. The release claw 53 is provided at the end with a joint portion 531. The coupling portion 531 and the sliding shaft 52 are axially coupled by the joint portion 521. The joint portion 531 can be a convex block or a concave hole, and the other end of the release claw 53 is provided with a passive member 532, and the release claw 53 has a passive member. The 532 is in contact with the notch portion 341 of the dial portion 33 of the inner slide rail 33, and the passive member 532 can be a shaft rod. The sliding mechanism 5 further includes an elastic member 54, which is φ end The second fixing portion 51 is fixedly disposed. The other end of the elastic member 54 is fixed to the first fixing portion 41 of the fixing base 4, so that the elastic member 54 can be received and received in the receiving portion 44 of the fixing portion 4. The elastic member 54 can be a spring. When the sliding rail mechanism 3 is in a returning or unstretched state, the sliding mechanism 3 can slide the lower portion of the sliding mechanism 32 below the fixing base 4. As shown in the third figure; please refer to the second and fifth figures, when the user will use the furniture of this creation, such as the locker When the outer slide rail 3 is pulled out, the inner slide rail 33 of the slide rail mechanism 3 is slidably displaced outwardly, and the inner slide rail 33 has a recessed portion 341 of the dial portion 34 that is engaged with the release claw 53. a member 532, the release claw 53 is axially coupled to the sliding shaft 52, so that the dial portion 34 can drive the release claw 53 and the sliding shaft 52 to be horizontally displaced in the groove 45 of the fixing base 4, The sliding shaft 52 can further drive the sliding mechanism 5 to horizontally displace the second fixing portion 51, so that the second fixing portion 51 can drive and stretch the elastic member 54, so that the elastic member 54 can generate a reverse elastic force. When the release claw 53 continues to be horizontally displaced, the position of the passive member 532 is aligned with the position of the notch portion 46 of the groove 45. Referring to the sixth figure, as shown in the sixth figure, the recessed portion 341 of the dial portion 34 abuts against the release member 53 of the release claw 53. According to the vector decomposition principle of the force, the notch portion 341 is horizontal 7 M431630 When the displacement is performed, a force in the vertical direction is also applied to the passive member 532, and the release claw 53 is axially coupled to the sliding shaft 52 of the sliding mechanism 5, so that the dial portion 34 has a notch portion 34ι. The release claw 53 can be guided to rotate and displace the passive member 532 in the direction of the notch portion 46 of the groove 45, and the release portion 53 can be rotated by the notch portion 46. The passive member 532 falls smoothly into the notch portion 46 of the groove 45, and also reduces friction between the parts and reduces noise, that is, the release claw 53 and the passive member 532 can be coupled to the dial portion 34. The notch portion 341 is separated, and the sliding mechanism 3 can continue to slide outwards in the inner slide rail or the middle rail rail, and the user can continue to pull the drawer to the maximum range while The passive member 532 of the release claw 53 falls into the notch portion 46 of the groove 45, and the elastic member 54 generates the reverse elastic force. The passive member 532 abut against displacement forces in the cutout portion 46, not falling, so that the sliding mechanism 5 and the elastic member 54 can be maintained in tension. Referring to the seventh figure, when the user pushes the drawer back, the slide rail mechanism 3 has the inner slide rail 33 and the dial portion 34 slidingly displaced in the opposite direction to when the drawer is pulled out. The notch portion 341 of the dial portion 34 can abut the passive member 532 of the release claw 53, and the notch portion 341 can be horizontally displaced as well as the passive member according to the aforementioned vector division principle. 532 applies a force in a vertical direction, so that the notch portion 341 can guide the release claw 53 to rotate the passive member 532 toward the notch portion 341 of the dial portion 34, and the release claw 53 can be rotated. Rotating and causing the passive member 532 to fall into the notch portion 341 of the dial portion 34, and at the same time, the passive member 532 of the release claw 53 no longer abuts the notch portion 46 of the groove 45, and the gap is further The portion 46 is provided with a throwing surface 461 ′, so that the passive member 532 can be smoothly detached from the notch portion 46 , and the friction between the parts can be reduced and the noise can be reduced. Please refer to the eighth figure. The reverse elastic force of the elastic member 54 can drive the sliding mechanism 5 to release the passive member 532 of the claw 53 toward the side of the fixed seat 4 8 M431630 The horizontal displacement, so that the passive member 532 can drive the dial portion 34 and the slide rail mechanism 3, the inner slide rail 33 or the middle slide 32 automatically return to reset, so that the drawer can automatically retract the face, thereby enabling the present The creation is the purpose of automatic return to reset. Referring to the second and third figures, the first fixing portion 41 of the fixing base 4 and the second fixing portion 51 of the sliding mechanism 5 are disposed at intermediate positions instead of both sides, so that the elasticity can be made. The % of the material is centered without offset, and the problem that the movement between the fixing base 4 and the sliding mechanism 5 is not smooth or the mechanical parts are worn due to the unilateral force, thereby reducing the service life of the product, can be avoided. The utility model can achieve the effect of improving the service life and the convenience of use of the product: please refer to the second figure and the third figure, and the fixing seat 4 is provided with the accommodating portion 44, and the elastic member 54 can be accommodated. It is accommodated in the accommodating portion 44, so that the fixing base 4 can reduce the thickness thereof and still maintain the strength of the structure, and then, as shown in the fourth figure, the dam mechanism 3 _ is reset or not stretched. In the state of the slide mechanism 3, the slide rail 32 can be slidably disposed below the fixed seat 4, that is, the middle slide rail 32 does not need to be cut to match the length of the @seat 4, so the slide rail mechanism is 3 Under the condition that the length of the outer slide rail 31 is constant, the length of the slide rail 32 can be used in the present invention. The length of the slippery 21 is long, and the length of the slide rail mechanism 3 can be stretched, and the load capacity of the middle rail 32 can be increased, so that the creation can achieve better products. The effect of the service life. Referring to the second figure, as shown in the figure, the inner slide rail 32 only needs to be horizontally displaced by the recessed portion 341 of the dial portion to drive the release claw 54 to rotate and displace the passive member 532. Controlling to switch the separation or combination of the dialing portion 34 and the release claw 53 to cancel the state of the stretching and returning reset of the sliding mechanism 5, and to extract the essential parts, and to simplify the product The structure and the reduction of the manufacturing cost, so that the original work can be simplified, the group 9 M431630 is fast and cost-effective. In order to make this creation more progressive and practical, it is used as a comparison with the following: The conventional technology: 1. The elastic force of the elastic force is not centered, which is easy to cause the mechanism to be unsatisfactory and worn. 2. Reduce product life. The advantages of this creation: 1. The elastic force exerts no offset on the force application point of the elastic force, which can avoid or reduce the malfunction of the mechanism. 2. It can improve the service life of the product. 3, the middle rail can increase the length and increase the load capacity. [Simple description of the diagram] The first diagram is a schematic view of the conventional use. The first picture is an exploded view of the creation. The third picture is a schematic diagram of the combination of the creation. The fourth figure is a schematic cross-sectional view of the creation. The fifth figure is a schematic diagram of the action created during the stretching of the slide rail. The sixth figure is a schematic diagram of the action of the fifth figure. The seventh figure is a schematic diagram of the action created during the reset of the slide rail. The eighth figure is a schematic diagram of the action of the seventh figure. [Description of main component symbols] 10·..Fixed seat U...Linear guide groove 12··. Oblique guide groove 13...Starter M431630 131...Convex shaft 14...Moving seat 15...Buffer member 16...Elastic member 2···Active slide group 2l··· Middle slide 22... Inner slide 221... Pilot groove 3... Slide mechanism 3l···Outer slide 311···First through hole 32... Slide 33...inner slide rail 34...toggle portion 341··· notch portion 4...fixing seat 41...first fixing portion 42...fixing member 43...thread hole 44...accommodating portion 45...groove 46···notch portion 46l The arcing surface 5...the sliding mechanism 51...the second fixing portion 521...the joint portion 53...the release claw 53l···the joint portion 532...the passive member 54...the elastic member 11