201210860 六、發明說明： 【發明所屬之技術領域】 料2明侧於汽車錢童座椅及嬰兒車等供嬰幼兒乘 坐的月兒器具之座席構造。 【先前技術】 車内的/ ⑽）除了作為確保嬰幼兒在 =内的*全性之車用兒童用座席之外，還希望能夠提高後 ，(reCllning)功能、旋轉功能、床功能等與嬰幼兒的乘坐 =有關之性能。這樣的兒童座椅—般係具備有可載置在 車輛座位上之底座部、由缝部Μ支狀供嬰幼兒乘坐 之座席部、以及繞掛在嬰幼兒的身體上之拘束帶，已知的 有例如日本特開2_-162151號公報（專利文獻 的發明。 戟* 專利文獻1中記載的兒童座椅，具備有左右一 與腰帶以及從座席部的座面的中央部突出而延伸之跨;， 來作為拘束帶。胯帶係通過嬰幼兒的兩腳的大腿部之間而 往上方延伸，且肩帶及腰帶係固^至胯帶的前端之帶扣 (b_le) ’使得嬰幼兒受到五點拘束。藉此，使嬰幼兒的 骨盤受到左右腰帶的拘束。 d而，專利文獻1之兒童座椅，其座席部之背靠面係 可後傾調整的。因此，在後傾難的前後，拘束帶會變緊 而堡迫嬰幼兒，或反之拘束帶變鬆而無法適切地保護嬰幼 ^，為了解決此等不良情形，而讓肩帶的上端部貫穿過背 罪面，且在靠背部的背面與調整帶連接。調整帶係沿著底 323049 4 201210860 I伸，然後變為向前延伸，最後 部到達座面的前端。嬰 巧整帶的則端 拉出長度，來將'° " 調整調整帶的 相熟 帶的鬆緊狀態調㈣適切的程度。 、，胯帶係貫穿座席部的座面而在 伸’且胯帶的下端部連接至位於座面下方之構件了方向延 中，卜i在日本特開細-226178號公報（專利文獻2) 心的上端侧係貫穿過靠背部，且沿著靠背部的背面 座部的τ面延伸，最後其前端從座部的前端拉出。嬰幼 兒的保4者可藉由調整該拉出長度，來將肩帶的鬆緊狀態 調整到適切的程度。 另外，日本特開平10-250426號公報（專利文獻3)及 日本特開2003-72435號公報（專利文獻4)中揭示背靠面後 員而成為床狀態之座席構造。此等文獻之座席構造，在椅 子狀怨中座面的後方侧係傾斜成比前方側低，使嬰幼兒向 後罪坐著。另一方面，在床狀態中，座面係上升到大致成 水平，而與背靠面一起提供大致為水平之床空間。 [先前技術文獻] [專利文獻] (專利文獻1)日本特開2005-162151號公報 (專利文獻2)日本特開2003-226178號公報 (專利文獻3)日本特開平10—250426號公報 (專利文獻4)曰本特開2003-72435號公報 【發明内容】 (發明所欲解決之課題） 5 323049 201210860 在專利文獻1所記載的兒童座椅的座席中，胯帶的丁 端在座部的下方連結至底座部的中央部，所以有必要設置 調整帶的迂迴路徑來使調整帶不會與胯帶的下端部干涉， 而有構造變複雜之問題。亦即，習知的構成係如第4圖所 示’在比座部A低之下方架設有在左右方向延伸之軸桿 (shaft)B或軸承架（bracket)，並將胯帶C的下端連結至 軸桿B，然後使胯帶c貫穿過座部A的中央部，再透過設 於胯帶C上端之帶扣d使左右的肩帶及腰帶e以可解開的 方式連結至胯帶C。在此習知的構成中，必須要有使通過 靠背部F的背面及座部A的下面之調整帶G迂迴通過而不 與胯帶C干涉之手段η。 另外，本發明之發明人發現：將專利文獻丨所揭示之 習知的胯帶的構成應用到專利文獻3及4所揭示的座席 時，會產生新的不良情況。亦即，如第4圖所示，在虛線 之床狀態中從座部Α向上方突出之胯帶c的突出高度汕即 使很適當，在實線之椅子狀態中胯帶c的突出高度Lc也會 變得太高之問題。因此，在椅子狀態，左右的腰帶並無法 拘束幼兒的骨盤。如此—來，作為汽車聽童座椅將無法 實現對於幼兒之適當的拘束。反之，使突出高度Lc很適 當’就會產生反倒是突出高度Lb變得太低之問題。 再者在如上述之習知的兒童座椅中，作用於拘束帶 之衝擊會射於胯帶C的下端。因此，在安全性上有待進 一步的改善。 本發明之一目的在於：鑑於上述實情，而提供一種構 323049 6 201210860 造簡易’且可避免娜帶與胯㈣干涉之技術。 部的目的在於:提供-種在座部會隨著靠背 、 在上下方向連動之育兒器具的情況，可消 除胯帶的突出高度會變化之不良情形之技術。 本發明之又-目的在於：提供—種可避免衝擊負荷集 中於胯帶的下端部，可提高安全性能之技術。 ^ (解決課題之手段） 為了達成上述目的’本發明之育兒器具之座席構造具 備有：座席本體’具有座部及靠背部；座席底座，支持^ 席本體；以及拘束帶裝置，用來拘束坐在座席本體上之嬰 幼兒的身體。而且’拘束帶裝置包含在上下方向貫穿座邱 而延伸之脖帶、以及絲在胯帶的±端之帶扣元件。 ，含：中央部份’連接至帶扣元件；以及-對分歧部份， 從中央部份往左右分歧且其前端部連結至座席 側部。 _ 』江七 根據如上所述之本發明，貫穿座部之跨帶在座部的下 r主i右分歧而延伸，且左側前端與座席底座的左側部連 二:的右側部連結，因而可在左侧的 二^與右側㈣歧部之間確保空間，故以簡易的構造即 後傾隨，_ 323049 7 201210860 此外，可將作用到胯帶的下端之衝擊往左右分散，安全性 能因而提南。 胯帶只要為下端側分歧的方式即可，分歧點的位置並 無特別的限制。例如，胯帶可為在長度方向中途位置分歧， 且在從上端到該中途位置之區域聚成束。或者，胯帶係從 上端之帶扣元件開始就分歧為兩股。 座席底座的形狀並無特別的限制，座席底座的側部與 胯帶的前端部之連接部位也無特別的限制，但以一個較佳 的實施形態而言，座席底座係包含：底壁部，位於座部之 下方；以及一對側壁部，從底壁部的左右端部向上方立起 而延伸，且胯帶的一對分歧部份的前端部係連結至該一對 側壁部。 本發明中，拘束帶裝置可為包含胯帶及一對帶子之三 點拘束式，亦可為包含胯帶及一對帶子（肩帶及腰帶）之五 點拘束式，而且肩帶的張力可為不可調整，但以一個較佳 的實施形態而言，拘束帶裝置係具備有：一對肩帶，以可 解開的方式連結至帶扣元件；調整帶，為了調整肩帶的張 力而一端連結至該一對肩帶，另一端沿著靠背部的背面及 座部的底面延伸而導引到座部的前方區域；以及鎖定機 構，在座部的前方區域固定前述調整帶的位置，且調整帶 係通過膀帶的一對分歧部分之間。 本發明之靠背部可為不能後傾調整之固定住的形態， 亦可為可後傾調整的形態，但以一個較佳的實施形態言， 靠背部係設成可後傾，座部係設成座面高度隨著靠背部的 8 323049 201210860 後傾動作而k南，且胯帶的一對分歧部份係與座部的底面 .接觸而延伸，以致於就算座部的高度變化，從座部的座面 向上方突出之胯帶的突出高度也大致保持一定。 後傾調整角度之範圍並無特別的限制，但作為一個較 佳的實施形恝，靠背部係可後傾到大致為水平之位置。 本發明之座席構造，可應用於嬰兒車、屋内用椅子及 床等之育兒器具。以-個較佳的實施形態而舉出的例子係 為具備本發明的座席構造之汽車用兒童座椅。 (發明之效果） 如上所述，本發明的胯帶包含：中央部份，在上下方 向貫穿座部而延伸且連接至帶扣元件；以及一對分歧部 份，從中央部份往左右分歧且其前端部連結至座席底座的 左右側部，所以可在調整帶於座部的下方通過之情況避免 調整帶與胯帶之干涉。另外，當為座部會隨著靠背部的後 傾調整而在上下方向連動之育兒器具的情況時，可消除胯 帶的突出高度會變化之不良情形。並且，可使胯帶的衝擊 負荷分散，而可提高安全性能。 【實施方式】 以下，根據圖式所示之實施例來詳細說明本發明之實 施形態。第1圖係示意性地顯示具備有作為本發明的一實 施例之育兒器具的座席構造之座席之縱斷面圖。第2圖係 示意性地顯示該實施例的座席構造之橫斷面圖，且為顯示 座部在最下方位置之狀態。第3圖係示意性地顯示該實施 例的座席構造之橫斷面圖’且為顯示座部在最上方位置之 323049 201210860 狀態。本發明之座席構造具備有供嬰幼兒乘坐之座席本體 61、以及支持座席本體61之座席底座64。 座席本體61具有：座部62，在大致水平方向擴展， 用來支持乘坐者（亦即嬰幼兒）的臀部；以及靠背部63 ,從 座部的後端部往上方延伸，用來支持嬰幼兒的背部。座部 62上側之座面及靠背部63表面之背靠面設有緩衝材，以 提供乘坐的嬰幼兒舒適的乘坐感受。靠背部63可進行後傾 角度調整，可如兩點鏈線所表示般傾斜到大致水平而成 床狀態。 _ 在以實線表示之椅子狀態，靠背部63係從座部62的 後端部立起’座部62係傾斜成為其後端部位於比前端部低 的位置之絲。如此可使嬰幼兒向後靠地坐在座席本體^ 上。相對的，在以兩點鏈線表示之床狀態，靠背部⑽係以 其下端為中心而後傾，而且座部62的後端部上升。靠背邙 63的下端部係與座部62的後端部連結成可相對轉動 而，在進行靠背的後傾調整時，使得座部62的傾斜角产也 會隨著靠背部63的傾斜角度而變化。具體而言，使靠^部 63向後傾時，座部62的後端部會上升。反之，使靠背; 63向前立起時座部62的後端部會下降。 ° 如此使座部62在上下方向移動調整時， 座面往上方突出之脖帶21也與座部62的上下移農動= 動而上下移動。關於此點將在後面詳加說明。 =拘束坐在座席本的身體之拘束 帶裝置66係連接至座部62的座面及靠背部63的背靠面 323049 10 201210860 拘束帶裝置66具有從靠背部63的背靠面延伸到座部_ 座面之成對之左帶67及右帶68、從座部62的座面突出而 延伸之將帶2卜以及安裝於胯帶21的上端且以可拆裝的 方式與左帶67及右帶68連結之帶扣元件7〇。 當背向前方且面向後方的座席本體61觀看時位於左 側之左帶67係從靠背部63的背靠面拉出然後向下方延 伸，其下端與座部62或座席底座64的左側部連接。左帶 67的上下方向中央區域的一點，設有可與帶扣元件邛連 結及分離之卡扣。使嬰幼兒坐在座席本體61上然後將該卡 扣插入帶扣元件70時’左帶67透過帶扣元件7〇而在嬰幼 兒的腹部附近與胯帶21連結。如此一來，左帶6?以該連 結部位以上之上側（肩帶部份）拘束嬰幼兒的右肩部，以該 連結部位以下之下側（腰帶部份）拘束嬰幼兒的右腰部。 同樣的，當背朝前方且面向後方的座席本體61觀看時 位於右側之右帶68係從靠背部63的背靠面拉出然後向下 方延伸，其下端與座部62或座席底座64的右側部連接。 右τ 68的上下方向中央區域的一點，設有可與帶扣元件 70連結及分離之卡扣。使嬰幼兒坐在座席本體η上然後 將該卡扣插入帶扣元件70時，右帶68透過帶扣元件70而 在嬰幼兒的腹部附近與胯帶21連結。如此一來，右帶68 以該連結部位以上之上側（肩帶部份）拘束嬰幼兒的左肩 部，以該連結部位以下之下側（腰帶部份）拘束嬰幼兒的左 腰部。 323049 因此，左右帶67、68之卡扣以上之上側部份係構成一 - 11 201210860 對肩帶， 、 ’卡扣以下之下侧部份則構成一對腰帶。另外為了 避免圖面過^^敏 %於繁雜’第1圖中，左右帶67、68的腰帶部份 係與跨帶21舌· js， 1董疊而顯示，且左右帶67、68的肩帶部份也 重疊顯示。而 m且胯π 21通過嬰幼兒的兩腳的大腿之間。因 此係以左邊沾白 ^ 、 的屑可、右邊的肩帶、左邊的腰帶、右邊的腰 ▼ 帶21對嬰幼兒進行五點拘束。 部63左帶、67的上端部及右帶68的上端部係貫穿設於靠背 ° 之成對的左右貫通孔25，然後在靠背部63的背面侧 通的調整帶23的上端連接。調整帶23係在座席本體 的左右方向中央沿著靠背部63的背面而延伸，再通過 座。Ρ 62與座席底座64之間，然後其下端被拉出到超出座 2底座64的前端。調整調整帶23的拉出長度，可將左右 ▼ 67、68的張力調整到合適的程度。調整帶23通常係由 座席底座64的鎖定機構42加以固定成不能移動，所以左 右帶67、68不會在嬰幼兒的乘坐當中變得鬆弛。 座席底座64包含位於座部62之下的底壁部64c、以 及從底壁部64c的左右端部往上立起而延伸之一對側壁部 64a、64b。座部62及靠背部63支持於該侧壁部64a、64b 之間。 圖中雖未圖示’但將本實施例之座席應用於汽車用兒 童座椅之情況時，係在底壁部64c的下面側形成圓形的基 座，並以底座構件來支持該基座。雖未圖示，但底座構件 具有承接座席底座底壁部64c的圓形基座之基部以及從基 部的後端立起之後壁部，所以係形成為從左右方向外侧觀 323049 12 201210860 看時呈L字狀形狀’且將騎底座64支 動。因此座席本體61及座席底座64㈣以在錯直=轉 伸之軸為中心而轉動。底座構件係載置在車輛的座位2延 底座構件設有未圖示之兒童座椅用安全帶固定具。 車輛的座椅安全帶繞掛在底座構件上，並以兒童座椅= 全π固定具將車輛的座椅安全帶夹持固定住，而將汽車: 兒里座椅安裝固定在車輛的座位上。 勝帶21包含中央部份及—對分歧部份。參照第2及第 3圖，胯帶21係貫穿過設在座部62的中央部之貫通孔 62h ’且從座部62往上方突出之中央部份係連接至帶扣元 件7〇’從中央部份的下侧連續延伸之分歧部份係在座部62 ^下方分歧而向左右延伸。分歧部份中之向左侧延伸之跨 π 21的分歧帶21a，其前端部係連結至左側壁部64&。分 歧部份中之向右侧延伸之胯帶21的分歧帶21b，其前端部 係連結至右側壁部64b。 特別的是，本實施例之胯帶21係在上端具有帶扣單元 刊’且從帶扣單元70開始分歧帶2la、21b就分歧為兩股。 另外，雖未圖示，但分歧帶21a、2lb的上端側亦可相互縫 接起來而形成不能分離之預定長度的中央部份，或者通過 套筒（sleeve)等之預定長度的筒狀構件而相互連結起來。 此It况之套筒係由座部62加以支持住，且不容易從座部 62的下方將之拔脫。 如第2及第3圖所示，作為胯帶的構成要素之分歧帶 的如端部及分歧帶2ib的前端部係分別連接至側壁部 323049 13 201210860 64a、64b的上下方向中央區域。而且，雖未圖示但亦可 將跨▼ 21的左右端分別連接至側壁部64&、6处的下端部。 調整帶23係、通過胯帶21的一對分歧部份之間。第2及第 3圖中’分歧帶2la、2ib雖然在比調整帶23高之上方向 f右方向分歧’但請將之理解成：就算分歧帶21a、21b的 面度會變化，調整帶23仍通過胯帶21的一對分歧部份之 間。 ^接著針對使座部在上下方向移動調整之情況中之胯 T的犬出円度進行說明。根據本實施例，胯帶21係貫穿過 座。Ρ 62 ’且在從座部62往上方突出之上端以可拆裝的方 式與左右▼ 67、68連結，以及在座部62的下方分歧而向 ，右延伸’向左側延伸之分歧帶21a㈣端部係與左側壁 64a連結’向右侧延伸之分歧帶2ib的前端部係與右側 壁j 64b連接。因此，即使使調整帶在座部62的下方 ，前後方向通過’調整帶23也不會與聘帶21干涉。結果， 就無需使調整帶23魏之手段，可使座席底座64的構造 變單純。因此根據本實施例，構造較簡易，^可避免調整 ▼ 23與胯帶21之干涉。 另外，根據本實施例，座部62受調整而往上方 跨帶21的上端部也可往上方移動。反之，座部62受調整 :在胯帶21的上端部也可往下方移動。具體而 : 圖所较麵62往下方移動之情況，會將201210860 VI. Description of the invention: [Technical field to which the invention pertains] Material 2 is a seat structure for a month-old appliance for infants and toddlers, such as a car child seat and a baby carriage. [Prior Art] In addition to the child's seat for the car that is used to ensure the infant's fullness in the car, it is also desirable to improve the reCllning function, the rotation function, the bed function, etc. with the infant. Ride = related performance. Such a child seat generally has a base portion that can be placed on the seat of the vehicle, a seat portion that is supported by the child in the form of a slit, and a restraint belt that is hung on the body of the infant. Japanese Laid-Open Patent Publication No. Hei. No. 2-162151 (Patent Document 1) The child seat disclosed in Patent Document 1 includes a left and right waistband and a cross section extending from a central portion of a seat surface of the seat portion. ; as a restraint belt. The straps extend upwards between the thighs of the infant's feet, and the shoulder straps and belts are fastened to the front end of the straps (b_le) 'to make infants In this way, the pelvis of the infant is restrained by the left and right belts. d. In the child seat of Patent Document 1, the backrest of the seat portion can be adjusted backwards. Therefore, it is difficult to lean backwards. Before and after, the restraint belt will become tight and the fortune will force the infant, or conversely the restraint belt will become loose and the baby can not be properly protected. In order to solve these unfavorable situations, the upper end of the shoulder strap penetrates the guilty face, and Connect to the adjustment strap on the back of the backrest. The whole belt stretches along the bottom 323049 4 201210860 I, then becomes forward extending, and the last part reaches the front end of the seat surface. The end of the baby-integrated belt pulls out the length to familiarize the '° " adjustment belt The elastic state of the belt is adjusted (4) to the extent that it is suitable. The belt is passed through the seat surface of the seat and is extended at the lower end of the belt and connected to the member below the seat surface. Japanese Patent Publication No. 226178 (Patent Document 2) The upper end side of the core penetrates the backrest portion and extends along the τ plane of the back seat portion of the backrest portion, and finally the front end thereof is pulled out from the front end of the seat portion. By adjusting the length of the pull-out, the elastic state of the shoulder strap can be adjusted to an appropriate degree. Japanese Patent Laid-Open Publication No. Hei 10-250426 (Patent Document 3) and JP-A-2003-72435 (Patent Literature) 4) The structure of the seat in the bed state is revealed in the back of the back. The seat structure of these documents is inclined at the rear side of the seat in the chair-like grievance to be lower than the front side, so that the infant can sit backwards. On the other hand, in the bed state, the seating system In the case of a substantially horizontal level, a substantially horizontal bed space is provided together with the backing surface. [Prior Art Document] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2005-162151 (Patent Document 2) Japanese Patent Publication No. 2003-72435 (Patent Document 4) JP-A-2003-72435 SUMMARY OF INVENTION [Problems to be Solved by the Invention] 5 323049 201210860 Patent Literature In the seat of the child seat described in the first aspect, the stern end of the sling is connected to the center of the base portion below the seat portion. Therefore, it is necessary to provide a bypass path of the adjusting belt so that the adjusting belt does not interfere with the lower end portion of the sling. , and there are problems with the complexity of the structure. That is, the conventional configuration is as shown in FIG. 4 'A shaft B or a bracket extending in the left-right direction is placed below the seat A, and the lower end of the strap C is placed. Attached to the shaft B, the crucible c is inserted through the central portion of the seat A, and then the left and right shoulder straps and the belt e are releasably coupled to the ankle strap through the buckle d provided at the upper end of the strap C. C. In the conventional configuration, it is necessary to have a means η for passing back the back surface of the backrest portion F and the lower adjustment belt G of the seat portion A without interfering with the ankle belt C. Further, the inventors of the present invention have found that when the configuration of the conventional tape disclosed in the patent document is applied to the seats disclosed in Patent Documents 3 and 4, a new problem occurs. That is, as shown in Fig. 4, the protruding height 汕 of the ankle strap c protruding upward from the seat portion in the state of the dotted bed is even appropriate, and the protruding height Lc of the ankle strap c in the state of the chair in the solid line is also Will become too high a problem. Therefore, in the state of the chair, the left and right belts cannot restrain the child's pelvis. In this way, as a car listening child seat, it will not be possible to achieve proper restraint for young children. Conversely, making the protrusion height Lc appropriate is the problem that the protrusion height Lb becomes too low. Further, in the child seat as described above, the impact acting on the restraint band is incident on the lower end of the ankle strap C. Therefore, there is still room for improvement in terms of safety. SUMMARY OF THE INVENTION One object of the present invention is to provide a technique for constructing a simple structure of 323049 6 201210860 and avoiding interference between the nano belt and the cymbal (4) in view of the above facts. The purpose of the department is to provide a technique for eliminating the problem that the protruding height of the ankle band may change when the seat portion is moved with the backrest and the childcare device in the vertical direction. Still another object of the present invention is to provide a technique for preventing the impact load from being concentrated on the lower end portion of the ankle strap and improving the safety performance. ^ (Means for Solving the Problem) In order to achieve the above object, the seat structure of the childcare device of the present invention includes: a seat body having a seat portion and a backrest portion; a seat base supporting the body; and a restraint device for restraining the seat The body of an infant on the body of the seat. Further, the 'band restraint device includes a neck band extending through the seat in the up-and-down direction and a buckle member at the ± end of the band. The central portion is connected to the buckle member; and the opposite portion is branched from the central portion to the left and right and the front end portion is coupled to the side of the seat. _ 』 Jiang 7 According to the invention as described above, the cross-belt extending through the seat portion extends in the lower right side of the seat portion, and the right side end portion is connected to the right side portion of the left side portion of the seat base, thereby being The space between the two sides on the left side and the right side (four) is ensured, so the structure is simple and backward, _ 323049 7 201210860 In addition, the impact on the lower end of the belt can be dispersed to the left and right, and the safety performance is thus increased. . As long as the lower end side is divergent, the position of the bifurcation point is not particularly limited. For example, the ankle band may be divided in the middle in the longitudinal direction, and bundled in a region from the upper end to the midway position. Alternatively, the straps are divided into two strands starting from the buckle element at the upper end. The shape of the seat base is not particularly limited, and the connection between the side portion of the seat base and the front end portion of the strap is not particularly limited. However, in a preferred embodiment, the seat base includes a bottom wall portion. The pair of side wall portions extend upward from the left and right end portions of the bottom wall portion, and the front end portions of the pair of branch portions of the tape are coupled to the pair of side wall portions. In the present invention, the restraint strap device may be a three-point restraint type including an ankle strap and a pair of straps, or may be a five-point restraint type including an ankle strap and a pair of straps (shoulder straps and a waist belt), and the tension of the shoulder strap may be It is not adjustable, but in a preferred embodiment, the restraint device is provided with: a pair of shoulder straps that are releasably coupled to the buckle members; an adjustment strap that adjusts the tension of the shoulder straps. Connecting to the pair of shoulder straps, the other end extending along the back surface of the backrest portion and the bottom surface of the seat portion to guide the front portion of the seat portion; and a locking mechanism for fixing the position of the adjustment belt in the front region of the seat portion and adjusting The strap passes between a pair of divergent portions of the belt. The backrest portion of the present invention may be in a form that cannot be adjusted by the backward tilting adjustment, or may be in the form of a backward tilting adjustment. However, in a preferred embodiment, the backrest portion is configured to be tiltable backward, and the seat portion is configured The height of the seat surface is k south with the backrest portion of the 8 323049 201210860 backward tilting motion, and the pair of diverging portions of the strap are extended in contact with the bottom surface of the seat portion, so that even if the height of the seat portion changes, the seat is seated. The protruding height of the sash that protrudes upward from the seat of the part is also kept substantially constant. The range of the reclining angle is not particularly limited, but as a preferred embodiment, the backrest portion can be tilted back to a substantially horizontal position. The seat structure of the present invention can be applied to a child care device such as a baby carriage, a chair for indoor use, and a bed. An example of a preferred embodiment is a child seat for a vehicle having the seat structure of the present invention. (Effect of the Invention) As described above, the chin strap of the present invention includes: a central portion extending through the seat portion in the up and down direction and connected to the buckle member; and a pair of divergent portions which are branched from the central portion to the left and right Since the front end portion is coupled to the right and left side portions of the seat base, it is possible to avoid interference between the adjustment belt and the ankle strap when the belt is passed under the seat portion. Further, in the case where the seat portion is moved in the vertical direction in accordance with the rearward tilt adjustment of the backrest portion, it is possible to eliminate the problem that the protruding height of the ankle band changes. Moreover, the impact load of the ankle strap can be dispersed, and the safety performance can be improved. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail based on the embodiments shown in the drawings. Fig. 1 is a longitudinal sectional view schematically showing a seat having a seat structure as a child care implement according to an embodiment of the present invention. Fig. 2 is a schematic cross-sectional view showing the seat structure of the embodiment, and showing the state in which the seat portion is at the lowest position. Fig. 3 is a schematic cross-sectional view showing the seat structure of the embodiment and is in the state of 323049 201210860 in which the seat portion is at the uppermost position. The seat structure of the present invention includes a seat body 61 for infants and a seat base 64 for supporting the seat body 61. The seat body 61 has a seat portion 62 that extends in a substantially horizontal direction to support the buttocks of the occupant (ie, the infant), and a backrest portion 63 that extends upward from the rear end portion of the seat portion to support the infant The back. A cushioning material is provided on the upper surface of the seat portion 62 and the back surface of the backrest portion 63 to provide a comfortable ride for the infant. The backrest portion 63 can be adjusted in a back tilt angle and can be tilted to a substantially horizontal bed state as indicated by a two-dot chain line. _ In the state of the chair indicated by the solid line, the backrest portion 63 rises from the rear end portion of the seat portion 62. The seat portion 62 is inclined so that the rear end portion thereof is located lower than the front end portion. This allows the infant to sit back on the seat body ^. On the other hand, in the state of the bed indicated by the two-dot chain line, the backrest portion (10) is inclined rearward about the lower end thereof, and the rear end portion of the seat portion 62 is raised. The lower end portion of the backrest cymbal 63 is coupled to the rear end portion of the seat portion 62 so as to be rotatable relative to each other. When the backrest is adjusted, the inclination angle of the seat portion 62 is also caused by the inclination angle of the backrest portion 63. Variety. Specifically, when the pressing portion 63 is tilted backward, the rear end portion of the seat portion 62 rises. Conversely, when the backrest; 63 is raised forward, the rear end portion of the seat portion 62 is lowered. When the seat portion 62 is moved and adjusted in the vertical direction as described above, the neck band 21 that protrudes upward from the seat surface also moves up and down with the seat portion 62 to move up and down. This point will be explained in detail later. The restraint belt device 66 that is restrained to sit on the seat body is connected to the seat surface of the seat portion 62 and the back surface of the backrest portion 63. 323049 10 201210860 The restraint belt device 66 has a backrest surface extending from the backrest portion 63 to the seat portion _ the left side belt 67 and the right belt 68 of the seat surface, the belt 2 extending from the seat surface of the seat portion 62, and the upper end of the belt 21 and being detachably attached to the left belt 67 and The buckle member 7 is connected to the right belt 68. The left belt 67 on the left side when viewed from the front and rearward facing seat body 61 is pulled out from the backrest surface of the backrest portion 63 and then extended downward, and the lower end thereof is connected to the seat portion 62 or the left side portion of the seat base 64. At a point in the central portion of the left belt 67 in the up-and-down direction, a buckle that can be coupled and separated from the buckle member 设有 is provided. When the infant is seated on the seat body 61 and the buckle is inserted into the buckle member 70, the left belt 67 is coupled to the ankle strap 21 near the abdomen of the infant through the buckle member 7''. In this way, the left side 6? restrains the right shoulder of the infant from the upper side (shoulder part) above the joint portion, and restrains the right waist of the infant from the lower side (the belt portion) below the joint portion. Similarly, the right belt 68 on the right side when viewed from the front and rearward facing seat body 61 is pulled out from the backrest surface of the backrest portion 63 and then extends downward, and the lower end thereof is opposite to the seat 62 or the right side of the seat base 64. Department connection. At a point in the central portion of the right τ 68 in the up-and-down direction, a buckle that can be coupled and separated from the buckle member 70 is provided. When the infant is seated on the seat body η and the buckle is inserted into the buckle member 70, the right belt 68 is coupled to the ankle strap 21 near the abdomen of the infant through the buckle member 70. In this manner, the right belt 68 restrains the left shoulder of the infant from the upper side (shoulder strap portion) above the joint portion, and restrains the left waist portion of the infant from the lower side (the belt portion) below the joint portion. 323049 Therefore, the upper side of the buckle of the left and right belts 67, 68 constitutes a - 11 201210860 pair of shoulder straps, and the lower side of the buckle below constitutes a pair of waist belts. In addition, in order to avoid the surface of the ^ ^ sensitive % in the complex 'the first picture, the left and right belts 67, 68 of the waistband part and the cross strap 21 tongue · js, 1 Dong stacked and displayed, and the left and right belts 67, 68 shoulder The band parts are also overlapped. And m and 胯π 21 pass between the thighs of the infant's two feet. Therefore, the left side of the white ^, the crumbs can be, the right shoulder strap, the left belt, the right side of the waist ▼ with 21 for five infants and young children. The upper end portions of the left belt portion 67, the upper end portion of the 67, and the upper end portion of the right belt 68 are inserted through the pair of right and left through holes 25 provided in the backrest portion, and then connected to the upper end of the adjustment belt 23 which is open to the back side of the backrest portion 63. The adjustment belt 23 extends along the back surface of the backrest portion 63 at the center in the left-right direction of the seat body, and passes through the seat. Between the Ρ 62 and the seat base 64, the lower end is then pulled out beyond the front end of the base 64 of the seat 2. By adjusting the pull-out length of the adjustment belt 23, the tension of the left and right ▼ 67, 68 can be adjusted to an appropriate level. The adjustment belt 23 is normally fixed by the locking mechanism 42 of the seat base 64 so as not to be movable, so that the left and right belts 67, 68 do not become slack during the ride of the infant. The seat base 64 includes a bottom wall portion 64c located below the seat portion 62, and a pair of side wall portions 64a, 64b extending upward from the left and right end portions of the bottom wall portion 64c. The seat portion 62 and the backrest portion 63 are supported between the side wall portions 64a, 64b. Although not shown in the drawings, when the seat of the present embodiment is applied to a child seat for an automobile, a circular base is formed on the lower surface side of the bottom wall portion 64c, and the base is supported by the base member. . Although not shown, the base member has a base portion of a circular base that receives the seat base bottom wall portion 64c and a wall portion that rises from the rear end of the base portion. Therefore, the base member is formed to be viewed from the left and right outer side 323049 12 201210860 The L-shaped shape 'and the riding base 64 is supported. Therefore, the seat body 61 and the seat base 64 (four) are rotated about the axis of the straight line = the rotation. The base member is placed on the seat 2 of the vehicle. The base member is provided with a seat belt fixing device for a child seat (not shown). The seat belt of the vehicle is hung on the base member, and the seat belt of the vehicle is clamped by the child seat = full π fixture, and the car seat is fixed to the seat of the vehicle. . Winner 21 consists of a central part and a pair of divergent parts. Referring to the second and third figures, the ankle strap 21 is inserted through the through hole 62h' provided in the central portion of the seat portion 62, and the central portion projecting upward from the seat portion 62 is connected to the buckle member 7' from the center portion. The divergent portions of the lower side continuously extending are divided below the seat portion 62^ and extend to the left and right. The branch band 21a of the π 21 extending to the left in the divergent portion is connected to the left side wall portion 64 & The branch belt 21b of the ankle strap 21 extending to the right side of the dissimilar portion is connected to the right side wall portion 64b at its front end portion. In particular, the ankle strap 21 of the present embodiment has a buckle unit at the upper end, and the branch belts 2la, 21b start from the buckle unit 70 to be divided into two. Further, although not shown, the upper end sides of the branch bands 21a and 2bb may be sewn together to form a central portion of a predetermined length that cannot be separated, or a cylindrical member of a predetermined length such as a sleeve. Connected to each other. The sleeve of this It state is supported by the seat portion 62 and is not easily detached from the lower portion of the seat portion 62. As shown in Figs. 2 and 3, the end portions of the branching bands and the front end portions of the branching strips 2ib, which are constituent elements of the tape, are connected to the central portions in the vertical direction of the side wall portions 323049 13 201210860 64a and 64b, respectively. Further, although not shown, the left and right ends of the spans 21 may be connected to the lower end portions of the side wall portions 64 & The belt 23 is adjusted to pass between a pair of divergent portions of the strap 21. In the second and third figures, the 'difference bands 2la and 2ib are different in the right direction f from the upper side of the adjustment belt 23'. However, it is understood that the degree of change of the branch bands 21a and 21b may be changed, and the adjustment band 23 may be adjusted. Still passing between a pair of divergent portions of the strap 21. ^ Next, the dog's exit degree in the case where the seat portion is moved in the up and down direction is adjusted. According to this embodiment, the ankle strap 21 is passed through the seat. Ρ 62 'and the upper end protruding upward from the seat portion 62 is detachably coupled to the left and right sides ▼ 67, 68, and the lower side of the seat portion 62 is divergent, and the right end extends to the left side of the branch belt 21a (four) end portion The front end portion of the branching belt 2ib that is connected to the left side wall 64a is connected to the right side wall j 64b. Therefore, even if the adjustment belt is placed below the seat portion 62, the front-rear direction passing the adjustment belt 23 does not interfere with the hire belt 21. As a result, the configuration of the seat base 64 can be simplified without the need to adjust the belt 23. Therefore, according to the present embodiment, the configuration is relatively simple, and the interference of the adjustment ▼ 23 with the ankle strap 21 can be avoided. Further, according to the present embodiment, the seat portion 62 is adjusted to move upward toward the upper end portion of the upper belt 21 . On the contrary, the seat portion 62 is adjusted: the upper end portion of the ankle strap 21 can also be moved downward. Specifically: the situation where the figure moves below the face 62 will
Wla、21b往下方壓，所以料21會與座部62連 下移動。因此比較第2及第3圖，不論座部62的上下方向 323049 201210860 從座部62的座面突出之胯帶21的突出高度都 • /又十麼义化。結果，可解決將座部62鮮到上方位置時脖 帶的突出高度變小使得拘束帶會變緊而壓迫嬰幼兒之 的不良情形。同樣地，可解決將座部6 =::r使得拘束帶難-編兒的骨盤 再者，根據本實施例，跨f 21包含分歧帶2ia、灿， =可避免衝擊負荷集中於胯帶21的下端部，可提高安全 m . 〜輯本發明之實施形態進行了說 :明=本發明並不限定於圖示的實施形態。還可在盘本 =同之範圍内，或均等的範圍内，對於圖示的實施： 態做各種的修正或變化。 y [產業上的可利用性] 嬰兒車、 本發明之座席構造，利用於汽車用兒童座椅、 ，内用育兒椅子及床等之育兒器具都相當有利。 【圖式簡單說明】 器具 斷面 第1圖係示意性地顯示本發明的一實施例之 的座席構造之縱斷面圖。 第2圖係示意性地顯示該實施例的座席構造之橫 圖’且為顯示座部在最下方位置之狀態。 、Wla and 21b are pressed downward, so that the material 21 moves downward with the seat portion 62. Therefore, comparing the second and third figures, regardless of the vertical direction of the seat portion 323049 201210860, the protruding height of the ankle strap 21 protruding from the seating surface of the seat portion 62 is made. As a result, it is possible to solve the problem that the protruding height of the neck band becomes small when the seat portion 62 is fresh to the upper position, so that the restraining band becomes tight and the infant is pressed. Similarly, it is possible to solve the problem that the seat portion 6 =::r makes the restraining band difficult-to-be-made. According to the present embodiment, the spanning band f 21 includes the branching band 2ia, can, and can avoid the impact load from being concentrated on the ankle strap 21 The lower end portion can improve the safety of the embodiment of the present invention. The present invention is not limited to the illustrated embodiment. It is also possible to make various corrections or changes to the implementation of the diagram within the scope of the same version, or within the same range. y [Industrial Applicability] The baby carriage and the seat structure of the present invention are advantageous for use in child care seats for automobiles, child care chairs for internal use, and beds. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a longitudinal sectional view schematically showing a seat structure according to an embodiment of the present invention. Fig. 2 is a view schematically showing the horizontal view of the seat structure of the embodiment and showing the state in which the seat portion is at the lowest position. ,
第3圖係7F意性地顯示該實施例的座席構造之橋斷面 且為顯示座部在最上方位置之狀態。 '、 第4圖係示意性地顯示習知例子的座席構造之縱斷面 323049 15 201210860 圖。 【主要元件符號說明】 21 胯帶 21a 、21b分歧帶 23 調整帶 25 ' 62h貫通孔 42 鎖定機構 61 座席本體 62 座部 63 靠背部 64 座席底座 64a 左側壁部 64b 右側壁部 64c 底壁部 66 拘束帶裝置 67 左帶（肩帶及腰帶） 68 右帶（肩帶及腰帶） 70 帶扣元件 16 323049Fig. 3 is a view schematically showing a bridge cross section of the seat structure of the embodiment and a state in which the display seat portion is at the uppermost position. ', Fig. 4 is a schematic view showing a longitudinal section of a seat structure of a conventional example 323049 15 201210860. [Description of main component symbols] 21 胯 belt 21a, 21b bisector belt 23 adjustment belt 25' 62h through hole 42 locking mechanism 61 seat body 62 seat portion 63 backrest portion 64 seat base 64a left side wall portion 64b right side wall portion 64c bottom wall portion 66 Restraint device 67 Left belt (shoulder strap and belt) 68 Right belt (shoulder strap and belt) 70 Buckle element 16 323049