M245870 拓J、新型說明： 【新型所屬之技術領域】 本新型是關於一種座椅，特別是指一種利用簡易的操 作來調整靠背之仰躺角度的座椅。 卞 【先前技術】 ίο 15 曰早期鞦韆的座椅在設計上，其座框及靠背的仰躺角度 都是固定式，此種靠背角度固定的座椅在乘坐上較為不舒 適：為了改善前述缺失，申請人曾在九十二年五月六日提 出第九二二〇八二三八號新型專利之申請，該申請前案所 提供之鞦轉1的構造大致如圖i、2所示，包含··—基架^ 懸掛早7G 12，以及一可前後擺盪地懸吊在該懸掛單元 12下方的座椅2。其中該座椅2包括：―基座21、至少一 個架設在該基座21上的乘坐單元22，以及至少兩個左右間 隔的定位機構23，前述定位機構23的數量為乘坐單元22 數！的兩倍，圖中僅示意-個乘坐單元22及一個定位機構 上述基座21具有兩支前後間隔之連桿211，以及兩個 左右間隔地架設在該等連桿211間的扶手212，在每一扶手 212皆具有一前後向延伸的安裝段213。而該乘坐單元22 2〇 ，、有座框221、一與該座框221以可枢擺方式連接且可因 座框221調整前後位置而產生不同仰躺角度的靠背222,以 及一與靠背222連動的腳靠223。由於座框221、靠背挪 及腳罪223間的連動關係為已知技術，以下僅簡略說明。 而^疋位機構23皆具有—固定在安裝段213上的斜撐 件231上述斜撐件231具有一位於上方的斜撐桿232，以 以 ；°亥斜扣桿2犯下方且封閉的斜滑槽233，而該定位 機構23更具有：一固定在座框221外側並伸入斜滑槽233 勺疋位;|：干234、一滑套在該斜撐件23ι上的定位件、 5 —較位件235與定位桿234結合的螺絲236，以及一螺鎖 件235上且底緣可迫緊斜撐桿232的螺轉件μ?。 田螺轉件237的底緣迫緊在斜撐桿232上時，該定位 件235及斜撐件231間的安裝位置固定，此時乘坐單元22 之座框221、㈣222及腳靠223 _安裝角度固定。當該 座打2奴,周整罪背222的仰躺角度時，先鬆退該螺轉件撕 1後調整座框221的前後位置，即可改變靠背如的仰 躺角度’待罪背222的仰躺角度恰當後再反向螺緊螺轉件 37即了使座椅2定位在預定的仰躺角度上。 申請人前所中請之鞦韆！在仰躺角度的設計上，益从 15豸靠背222是往前或者往後調整，操作上皆必需先螺鬆: 於座框221兩側的螺轉件237，待角度恰當後再反向螺緊飞M245870 Extension J. Description of new models: [Technical field to which new models belong] This new model relates to a seat, particularly a seat that uses simple operations to adjust the reclining angle of the backrest.先前 [Previous technology] 15 The seat of the early swing is designed in such a way that the reclining angle of the seat frame and the backrest are fixed. This type of seat with a fixed backrest angle is more uncomfortable to ride on: In order to improve the aforementioned deficiency The applicant filed an application for a new patent No. 920282838 on May 6, 1992. The structure of the autumn transfer 1 provided in the previous application is roughly shown in Figures i and 2. Contains ... Base frame ^ Suspended 7G 12 and a seat 2 which can be suspended back and forth under the suspension unit 12. The seat 2 includes:-a base 21, at least one riding unit 22 mounted on the base 21, and at least two left and right spaced positioning mechanisms 23, the number of the aforementioned positioning mechanisms 23 is the number of the seating units 22! The figure only shows one seat unit 22 and one positioning mechanism. The above-mentioned base 21 has two links 211 spaced back and forth, and two armrests 212 spaced between the links 211 spaced left and right. Each armrest 212 has a mounting section 213 extending back and forth. The seating unit 222 has a seat frame 221, a backrest 222 that is pivotably connected to the seat frame 221 and can generate different reclining angles due to the adjustment of the front and rear positions of the seat frame 221, and a backrest 222 Linked feet lean on 223. Since the linkage relationship between the seat frame 221, the backrest movement, and the foot crime 223 is a known technology, only a brief description is given below. Whereas, the positioning mechanisms 23 each have a diagonal brace 231 fixed on the mounting section 213, and the diagonal brace 231 has a diagonal brace 232 located above, so that the oblique buckle 2 makes a downward and closed slope. The sliding mechanism 233, and the positioning mechanism 23 further has: a fixing member fixed on the outside of the seat frame 221 and extending into the scooping position of the inclined sliding groove 233; |: stem 234, a positioning member sliding on the inclined supporting member 23, 5 — The screw 236 that combines the positioning member 235 with the positioning rod 234, and a screw-locking member 235 on the bottom edge of which the screw-turning member μ of the diagonal brace 232 can be pressed tightly. When the bottom edge of the Tianluo rotating member 237 is pressed on the diagonal brace 232, the installation position between the positioning member 235 and the diagonal brace 231 is fixed. At this time, the seat frame 221, ㈣222, and footrest 223 of the riding unit 22 _ installation angle fixed. When the seat hits 2 slaves and rectifies the reclining angle of the crime back 222, first loosen the screw turn member and tear 1 after adjusting the front and rear position of the seat frame 221 to change the reclining angle of the backrest, such as' to be sinned 222 After the proper reclining angle is adjusted, the screwing member 37 is reversely screwed to position the seat 2 at a predetermined reclining angle. The swing that the applicant asked for! In the design of the reclining angle, Yi Cong's backrest 222 is adjusted forward or backward, and the operation must be loosened first: the screw turning members 237 on the two sides of the seat frame 221, and the reverse screwing after the angle is appropriate Tight fly
等螺轉件237，此種操作方式不僅螺轉速度緩慢、不便X 螺轉件237直接抵迫斜撐件231纟面的定位方式，在操作 2〇 i亦較為費力，螺鎖後緊密度不足，也會影響座椅2定位 後的穩固性。 【新型内容】 本新型係在提供-種靠背之仰躺角度在調整時更為方 便、簡單的可調整靠背仰躺角度之座椅。 ‘ 本新型之座椅包含：―基座、一架設在基座之兩左右 M245870 間隔第一扶手間的第一垂 定位德Μ 宋丄早兀，以及兩左右間隔之第一 疋位祛構。其中該等 于白具有一刖後向延伸的安裝 μ弟乘坐單兀包括：一可調整前後位置之座框， 5 當座框調整前後位置時可改變仰躺角度的靠背，而 该弟-定位機構皆包括··-固定地安裝在座框旁的固定座 、 安衣在忒基座之安裝段上的斜撐件，上述斜撐件 具有一由前往後逐漸低下傾斜的定位段。 本新型的特徵在於：該固定座上具有一供該定位段穿 10 ^的滑槽，以及一與該滑槽相導通的控孔，而該定位段上 設有至少兩個前後排列的定位槽，每一定位槽皆具有一位 於後方的斜推面’以及一位於前方的播面，而該第-定位 T構更包括：—具彈性負載地安裝在固定座之控孔上的拉 桿’上述拉桿具有—伸人滑槽而可卡擎在該等定位 其中之一上的控端。 的 15 當座椅欲由-仰躺位置轉換到一倚靠位置時，可在不 必引拉該拉桿的情況下，藉該等定位槽上斜推面的設計， 20 使控桿之控端得以自動地由定位槽移到後面的另一定位槽 内，而當座椅欲由倚靠位置轉換到仰躺位置時，則克服彈 力上拉該拉桿，使拉桿之控端脫離原本定位之定位槽，如 此該靠背之仰躺角度即可恢復的仰躺位置。 【實施方式】 有關本新型之前述及其他技術内容、特點與功效，在 以下配合參考圖式之較佳實施例的詳細說明中，將可清楚 的明白。Such as the screw turning member 237, this operation method is not only slow screwing speed, inconvenient X screw turning member 237 directly against the positioning method of the diagonal support member 231, but also laborious in operation 20i, the tightness after screwing is insufficient , Will also affect the stability of seat 2 after positioning. [New content] This new model provides a seat with adjustable backrest reclining angle, which is more convenient and simple when adjusting the reclining angle of the backrest. ‘This new type of seat includes: — a base, a first vertical positioning between the first and second armrests of the M245870 spaced between the first and second armrests, and a first position of the two left and right spaces. Wherein, the installation unit that has a rearward extension of the equal brother includes: a seat frame that can adjust the front and rear positions, 5 a backrest that can change the reclining angle when the seat frame is adjusted to the front and rear positions, and the brother-positioning mechanism Both include a fixed seat fixedly installed beside the seat frame, and a diagonal support member that is installed on the mounting section of the base. The diagonal support member has a positioning section that gradually lowers from the back to the back. The novel model is characterized in that: the fixed seat has a slide groove for the positioning section to pass through 10 ^, and a control hole communicating with the slide groove, and the positioning section is provided with at least two positioning grooves arranged in front and back Each positioning slot has a slanting push surface located at the rear and a seeding surface located at the front, and the first positioning T structure further includes:-a tie rod elastically mounted on the control hole of the fixed seat, described above The pull rod has a control end that extends into the chute and can be stuck on one of the positions. 15 When the seat is to be converted from the reclining position to a reclining position, the design of the inclined push surfaces on the positioning grooves can be used to automatically control the control end of the lever without the need to pull the lever. The ground is moved from the positioning groove to another positioning groove at the back, and when the seat wants to change from the reclining position to the reclining position, the lever is pulled up against the elastic force, so that the control end of the lever is separated from the positioning groove originally positioned, so The reclining position of the backrest reclining position can be restored. [Embodiment] The foregoing and other technical contents, features and effects of the present invention will be clearly understood in the following detailed description of the preferred embodiment with reference to the drawings.
7 M245870 參閱圖3、4，本新型座椅的一較佳實施例係藉兩個懸 掛單元31，以可前後擺盪的方式懸掛在一基架32的下方， 以形成一鞦韆3,在設計上本新型之座椅亦可被安裝在躺椅 的基架上形成躺椅的形式。本實施例之座椅包含：一基座4 5 、一第一乘坐單元5、一第二乘坐單元5’、兩組左右間隔的 弟一定位機構6 ’以及兩左右間隔的弟二定位機構6 ’。 其中該基座4包括：一橫跨在基架32靠前方的前連桿 41、一與該前連桿41前後間隔之後連桿42、架設在該等前 、後連桿41、42間且左右間隔的兩第一扶手43，以及兩個 10 架設在該等連桿41、42間且左右間隔的第二扶手44，由於 第一及第二扶手43、44的構造相同，以下僅以第一扶手43 作說明。本新型之第一扶手43具有一固定地位在前連桿41 上方的前直段431、一固定地位在後連桿42上方的後直段 432、一連接在前、後直段431、432頂緣間的手靠段433、 15 一連接在該等直段431、432間且位於手靠段433下方的安 裝段434，以及一安裝在安裝段434上方及前直段431後方 的插管4 3 5。 本新型之第一及第二乘坐單元5、5’是左右間隔地架設 在基座4上，其中第一乘坐單元5位於該等第一扶手43間 20 ，第二乘坐單元5’位於該等第二扶手44間，由於第一及第 二乘坐單元5、5’的構造相同，以下僅以第一乘坐單元5作 說明。 配合圖5，本新型之第一乘坐單元5包括：一可供乘坐 的座框51、一可樞擺地安裝在座框51後方的靠背52、一 8 M245870 可樞杬地安裝在座框51前方的腳靠Μ， 地連結該腳靠53及靠f52的樞擺連桿5[ 本斤^的第—定位機構6是設在第-乘坐單元5的左 ?:二！與同側之第-扶手43連結，第二定位機構6,則 疋：？—乘坐單元5,及第二扶手44間，由於該等第一 :^位機構6、6’的構造相同，以下僅說明第-定位機 構6 〇 〆閱圖5、6、7 ’本新型之第位機構6包括：一藉 10 ，絲61固^地安裝在座框51外側的固定座62、一架設 在t 一扶手43之安袈段434上的斜撐件63、-拉桿64、 -祕讀65、—撞環66以及—外蓋…其中該固定座 ;、具有-圓柱狀的滑套部62卜一焊固在該滑套部621 上鄰近座框51 —側之螺帽622、—自該滑套部621之-表 15 面往j並往後斜伸的突伸部咖、—成型在該滑套部奶上 亚=丽往後逐漸低下貫穿的滑道咖、-貫穿該滑套部621 及大伸。M23亚與該滑道似相通的控孔，以及一設於 °亥'月套°M21上亚朝向該螺帽622的螺孔626。其中該滑道 624的截面可以是古 ^、圓形等任何形狀，在本實施例該 滑這概的截面為四方形，而該螺帽622是伸入定位在座 及螺孔626内，前牙經該座框51後螺鎖在螺帽622 ㈣。部則設有-孔徑縮小的階 4q/該斜撐件63是固定地安襄在第一扶手43之安裝段 4 3 4 上，具有-"έτ W 1L J. 插設在插管435上的插設段β31 ' — 20 M245870 自該插設段631頂緣往後並往下逐漸低下斜伸的定位段632 ，以及一螺鎖過該安裝段434及定位段632後端緣間並固 定該斜撐件63的螺絲633。其中該定位段632呈扁平狀， 具有一朝上之頂面634，在該頂面634上設有數個等距離下 5 凹的定位槽635，每一定位槽635則各別包括：一由後往前 低下斜伸的斜推面6 3 6，以及一自該頂面6 3 4往下直立延伸 且位於斜推面6 3 6前方的擋面6 3 7。 本新型的拉桿64具有一伸入該控孔625内的桿部641 ，以及一結合在桿部641上突出於控孔625頂端的手控部 10 642，上述桿部641具有一徑向突出並抵靠在固定座62之 階面627上的受頂突環643，以及一伸入該斜撐件63之滑 道624並位在該等定位槽635中的其中之一上的控端644。 而該擋環66是安裝在該控孔625頂緣，彈性元件65則是 介於擋環66及受頂突環643間，該外蓋67是蓋設在該固 15 定座62之突伸部623上，並以捲包方式與該固定座62固 定地結合。 參閱圖3、6，本新型之座椅位在圖3所示之一仰躺位 置時，該等第一定位機構6的拉桿64是受到彈性元件65 的頂撐恆呈下移，使底端的控端644抵靠在定位段632最 20 前方的定位槽635内，受到該定位槽635之擋面637的阻 擋，該固定座62與斜撐件63間的安裝位置固定。此時， 該腳靠53大致是往前傾斜狀，而該靠背52大致呈往後傾 擺狀而適合供仰躺。 參閱圖3、7、8，當使用者欲使座椅由圖3的仰躺位置 10 M245870 轉換到圖8的倚靠位置時，乃往前前推該靠框52，在推送 靠框52的過程中，連結之座框51會受到牽引往後移位， 並因此帶動固定座62 —起往後移位，在固定座62後移的 過程中，隨著固定座62移動之拉桿64會克服彈性元件65 5 的彈力，並順著定位槽6 3 5之斜推面6 3 6逐漸的往後一個 定位槽635移位。當該拉桿64的控端644對應最後面的定 位槽635時，受到彈性元件65的頂推，該拉桿64的控端 644是***該定位槽635内形成定位。此時，該靠背52會 由圖3的仰躺位置轉換到圖8的倚靠位置。 10 參閱圖8、9，而當本新型之座椅欲由圖8的倚靠位置 轉換到圖3的仰躺位置時，受到每一定位槽6 3 5上擋面6 3 7 的阻擋，調整時必需克服彈性元件65的彈力將拉桿64上 拉，使拉桿64的控端644高過斜撐件63的頂面634，此時 結合在一起的固定座62及座框51即可一起移動，直到該 15 拉桿64之控端644對應斜撑件63上最前面一個定位槽635 時，再放鬆該拉桿64，即可藉由彈性元件65的作用，將控 端644頂向定位槽635，使該座椅由圖8的倚靠位置轉換到 圖3的仰躺位置。 由以上說明可知，本新型該等定位機構6、6’的設計， 20 不僅可以定位乘坐單元5、5’之靠背52的仰躺角度，當座 椅由仰躺位置轉換到倚靠位置，完全不必上拉該拉桿64即 可進行。而當座椅欲由倚靠位置轉換到仰躺位置時，只要 上拉該拉桿64，即可讓靠背52往後傾擺，當然，由於本新 型之斜撐件63上具有多數定位槽635，因此，本新型之座 11 ^在倚减仰躺位置時尚有許多可調的角度，以增進乘坐 、予適&本新型該項設計不僅新穎，更具有靠背犯之 仰躺角度在調整上更為簡便的功效。 处、惟以上所述者，僅為本新型之較佳實施例而已，當不 2以此限定本新型實施之範圍，即大凡依本新型中請專利 辄圍及新型說明書内容所作之簡單的等效變化與修飾，皆 應仍屬本新型專利涵蓋之範圍内。 【圖式簡單說明】 圖1是申請人前所申請第92208238號新型專利申請案 之側視圖； 圖2是前述申請案之一未完整的立體分解圖； 圖3疋本新型座椅之一較佳實施例的使用狀態參考圖 ，說明該座椅安裝在鞦韆之一基架上，圖中該座椅位在一 仰躺位置； 圖4疋該較佳實施例之一組合正視圖； 圖5疋该較佳實施例之一未完整的立體分解圖，主要 顯示該座椅之一第一定位機構； 圖6是該較佳實施例之一未完整的正面剖視圖，圖中 該座椅之第一定位機構位在一卡掣位置； 圖7是該較佳實施例之一未完整的側面剖視圖； 圖8是一類似圖3的使用狀態參考圖，圖中該座椅位 在一倚靠位置；及 圖9是一類似圖7的未完整側面剖視圖，圖中該第一 疋位機構位在《非卡擎位置。 12 25 M245870 【圖式之主要元件代表符號說明】 3 鞦韆 621 滑套部 31 懸掛單元 622 螺帽 32 基架 623 突伸部 4 基座 624 滑道 41 前連桿 625 控孔 42 後連桿 626 螺孔 43 第一扶手 627 階面 431 前直段 63 斜撐件 432 後直段 631 插設段 433 手靠段 632 定位段 434 安裝段 633 螺絲 435 插管 634 頂面 44 第二扶手 635 定位槽 5 第一乘坐單元 636 斜推面 5， 第二乘坐單元 637 擋面 51 座框 64 拉桿 52 靠背 641 桿部 53 腳靠 642 手控部 54 樞擺連桿 643 受頂突環 6 第一定位機構 644 控端 6， 第二定位機構 65 彈性元件 61 螺絲 66 擋環 62 固定座 67 外蓋 137 M245870 Referring to FIGS. 3 and 4, a preferred embodiment of the new seat is suspended from a base frame 32 in a swingable manner by two suspension units 31 to form a swing 3. The new type of seat can also be installed on the base of the recliner to form a recliner. The seat of this embodiment includes a base 4 5, a first riding unit 5, a second riding unit 5 ′, two sets of left and right spaced-apart positioning mechanisms 6 ′, and two left and right spaced apart two positioning mechanisms 6. '. The base 4 includes a front link 41 spanning the front of the base frame 32, a front link 41 spaced forward and rearward from the front link 41, and a bridge 42 erected between the front and rear links 41 and 42. The two first armrests 43 spaced left and right, and two second armrests 44 spaced left and right spaced between the links 41 and 42. Since the structures of the first and second armrests 43 and 44 are the same, only the following The first armrest 43 will be described. The first handrail 43 of the new model has a front straight section 431 fixed above the front link 41, a rear straight section 432 fixed above the rear link 42, and a top and rear straight sections 431 and 432. The handrest sections 433, 15 between the edges are connected between the straight sections 431, 432 and the installation section 434 below the handrest section 433, and a cannula 4 installed above the installation section 434 and behind the front straight section 431. 3 5. The first and second seating units 5 and 5 'of the new model are erected on the base 4 with left and right intervals. The first seating unit 5 is located between the first armrests 43 and 20 and the second seating unit 5' is located at the base. Since the structures of the first and second seating units 5 and 5 ′ are the same between the second armrests 44, only the first seating unit 5 will be described below. With reference to FIG. 5, the first riding unit 5 of the present invention includes a seat frame 51 that can be seated, a backrest 52 that can be pivotally mounted behind the seat frame 51, and an 8 M245870 that can be pivotally mounted in front of the seat frame 51. The footrest M connects the footrest 53 and the pivot link 5 of the f52 with the ground [the first positioning mechanism 6 of the weight ^ is located on the left side of the fifth riding unit 5: two! Connected to the first-handrail 43 on the same side, and the second positioning mechanism 6, then 疋:? — Between the riding unit 5, and the second armrest 44, since the structures of the first: ^ position mechanisms 6, 6 'are the same, only the-positioning mechanism 6 will be described below. See Figures 5, 6, and 7' The first position mechanism 6 includes a fixed seat 62 that is fixedly mounted on the outer side of the seat frame 51 by a wire 10, an inclined support member 63, a tie rod 64, and a secret bridge 434 mounted on the safety section 434 of the armrest 43. Read 65,-crash ring 66, and-outer cover ... where the fixing seat;-has a cylindrical sliding sleeve portion 62, a nut 622 welded to the sliding sleeve portion 621 adjacent to the seat frame 51-side,- From the sliding sleeve part 621-Table 15, the protruding part coffee that extends obliquely toward the back and the back, is formed on the sliding sleeve part milk upper Asia = Li, the slideway coffee that gradually lowers through,-runs through the slide The sleeve part 621 and the large extension. M23 is a control hole similar to the slide, and a screw hole 626 is provided on the upper sleeve of the M21 sleeve toward the nut 622. The cross section of the slideway 624 can be any shape, such as a circle, a circle, etc. In this embodiment, the cross section of the slideway is a square, and the nut 622 extends into the seat and the screw hole 626. The front teeth After the seat frame 51 is screwed into the nut 622 ㈣. The section is provided with a step 4q with a reduced aperture / the inclined brace 63 is fixedly mounted on the mounting section 4 3 4 of the first armrest 43 and has-" έτ W 1L J. inserted on the cannula 435 Insertion section β31 '— 20 M245870 A positioning section 632 extending obliquely downward and downward from the top edge of the insertion section 631, and a screw lock passing between the installation section 434 and the rear end edge of the positioning section 632 and fixed Screws 633 of the inclined stay 63. The positioning section 632 is flat and has a top surface 634 facing upwards. The top surface 634 is provided with a plurality of positioning grooves 635 which are equally concave at a distance of 5 and each positioning groove 635 includes: The oblique pushing surface 6 3 6 extending obliquely forward and downward, and a blocking surface 6 3 7 extending upright from the top surface 6 3 4 and located in front of the oblique pushing surface 6 3 6. The tie rod 64 of the present invention has a lever portion 641 extending into the control hole 625 and a hand control portion 10 642 coupled to the lever portion 641 and protruding from the top of the control hole 625. The lever portion 641 has a radial protrusion and The top protruding ring 643 abuts on the stepped surface 627 of the fixed seat 62, and a control end 644 that extends into the slideway 624 of the inclined support member 63 and is located on one of the positioning grooves 635. The retaining ring 66 is installed at the top edge of the control hole 625, and the elastic element 65 is interposed between the retaining ring 66 and the top protruding ring 643. The outer cover 67 is a protrusion extending from the fixed 15 fixed seat 62. The portion 623 is fixedly coupled to the fixing base 62 in a roll-up manner. Referring to FIGS. 3 and 6, when the seat of the new model is in a reclining position as shown in FIG. 3, the pull rods 64 of the first positioning mechanisms 6 are constantly moved downward by the top support of the elastic element 65, so that the bottom end The control end 644 abuts in the positioning groove 635 at the frontmost part of the positioning section 632, and is blocked by the blocking surface 637 of the positioning groove 635. The installation position between the fixing seat 62 and the inclined support 63 is fixed. At this time, the footrest 53 is inclined substantially forward, and the backrest 52 is inclined substantially backward, which is suitable for lying on the back. Referring to FIGS. 3, 7, and 8, when the user wants to change the seat from the reclining position 10 M245870 of FIG. 3 to the reclining position of FIG. 8, he pushes the frame 52 forward, and pushes the frame 52 forward. In the process, the connected seat frame 51 will be moved backwards by traction, and thus will drive the fixed seat 62 to move backwards. During the backward movement of the fixed seat 62, the tie rod 64 as the fixed seat 62 moves will overcome the elasticity. The elastic force of the element 65 5 is gradually shifted to the next positioning groove 635 along the inclined pushing surface 6 3 6 of the positioning groove 6 3 5. When the control end 644 of the tie rod 64 corresponds to the rearmost positioning slot 635, it is pushed by the elastic element 65. The control end 644 of the tie rod 64 is inserted into the positioning slot 635 to form a positioning. At this time, the backrest 52 is switched from the reclining position in FIG. 3 to the reclining position in FIG. 8. 10 Refer to FIGS. 8 and 9, and when the new type seat is to be changed from the reclining position of FIG. 8 to the reclining position of FIG. 3, it is blocked by the upper blocking surface 6 3 7 of each positioning groove 6 3 5. It is necessary to overcome the elastic force of the elastic element 65 to pull up the tie rod 64, so that the control end 644 of the tie rod 64 is higher than the top surface 634 of the diagonal support 63, and the fixed seat 62 and the seat frame 51 combined at this time can move together until When the control end 644 of the 15 tie rod 64 corresponds to the foremost positioning slot 635 on the diagonal support 63, the tie rod 64 is loosened again, and the control end 644 can be pushed toward the positioning slot 635 by the action of the elastic element 65, so that the The seat is switched from the reclining position of FIG. 8 to the reclining position of FIG. 3. As can be seen from the above description, the design of the positioning mechanisms 6, 6 'of the new model 20 can not only locate the reclining angle of the backrest 52 of the seating units 5, 5', but it is not necessary to change the seat from the reclining position to the reclining position. This can be done by pulling up the lever 64. When the seat is to be switched from the reclining position to the reclining position, as long as the pull rod 64 is pulled up, the backrest 52 can be tilted back. Of course, because the inclined brace 63 of the new model has most positioning grooves 635, The seat of the new model has many adjustable angles in the reclining position to enhance the ride and comfort. The design of this new model is not only novel, it also has the adjustment of the reclining angle of the backrest criminal. Simple effect. However, the above are only the preferred embodiments of the new model. If not, this will limit the scope of the implementation of the new model. Effect changes and modifications should still fall within the scope of this new patent. [Brief description of the drawings] Figure 1 is a side view of the new patent application No. 92208238 previously applied by the applicant; Figure 2 is an incomplete perspective exploded view of one of the aforementioned applications; Figure 3 The use state of the embodiment is described with reference to the drawing, illustrating that the seat is installed on a base frame of a swing, and the seat is in a reclined position in the figure; FIG. 4 疋 A combined front view of the preferred embodiment; FIG. 5 疋An incomplete perspective exploded view of one of the preferred embodiments, mainly showing a first positioning mechanism of the seat; FIG. 6 is an incomplete front sectional view of one of the preferred embodiments, the first The positioning mechanism is in a latching position; FIG. 7 is an incomplete side sectional view of one of the preferred embodiments; FIG. 8 is a reference view similar to FIG. 3 in use, the seat is in a reclining position; and FIG. 9 is an incomplete side cross-sectional view similar to FIG. 7, and the first positioning mechanism is in the “non-card engine position”. 12 25 M245870 [Description of the main symbols of the drawings] 3 Swing 621 Slide sleeve 31 Suspension unit 622 Nut 32 Base frame 623 Protrusion 4 Base 624 Slide 41 Front link 625 Control hole 42 Rear link 626 Screw hole 43 First armrest 627 Step surface 431 Front straight section 63 Inclined brace 432 Rear straight section 631 Insertion section 433 Handrest section 632 Positioning section 434 Installation section 633 Screw 435 Cannula 634 Top surface 44 Second armrest 635 Positioning slot 5 First riding unit 636 Inclined pushing surface 5, Second riding unit 637 Retaining surface 51 Seat frame 64 Tie rod 52 Backrest 641 Lever 53 Footrest 642 Hand control 54 Pivot link 643 Top projection ring 6 First positioning mechanism 644 Control end 6, second positioning mechanism 65 elastic element 61 screw 66 stop ring 62 fixing seat 67 outer cover 13