201213173 六、發明說明： 【發明所屬之技術領域】 本發明係關於安裝在車内的座位上而可旋轉及後傾 (reclining)之兒童座椅的操作構造。 【先前技術】 座席本體的靠背部可後傾調整，且座席本體可相對於 底座構件而旋轉之車錢f座椅，已知的有如同例如日本 特開2002-301964號公報（專利文獻丨）及日本特開 2003-291698號公報（專利文獻2)所記載的發明。在專利文 獻1所記載的車用兒童座椅’要使座席本體（座椅本體）相 對於底座構件（基架）而_時，猶者不僅必須轉動設於 底座構件前端部之操作触，^且必須拉起設於座席本體 的前端部之後傾拉桿（reclining bar)來解除座席本體之 固定。 另外，在專利文獻2所記載的車用兒童座椅 席本體（座椅本體）相對於底座構件（座椅底座）而旋轉時， 操作者必_作設於底座構件前料之旋·定解除 部來解除座席本體之固定。或者，要進行座席本體（座椅本 體）的後傾機時，#作者必_作設於座席本體前端部之 後傾操作部來解除座席本體之固定。 [先前技術文獻] [專利文獻] (專利文獻1)日本特開 (專利文獻2)曰本特開 2002- 301964 號公報 2003- 291698 號公報 323046 4 201213173 【發明内容】 (發明所欲解決之課題） 然而，在如卜、+、 -ΤΓ -V? afl ^ B 之以往的車用兒童座椅’會發生如以 下忒明之問題。亦 a P，因為用來進行後傾調整之操作部與 ㈣位置之操作部係設在相互分開的處所，所以 太二二：進仃操作之操作很繁雜之問題。尤其，在座席 3彳方或打橫之情況，用來進行後傾調整之操作部 ,、用來調錢轉位置之齡部更是分得㈣，操作變得更 加繁雜。 本發明係鑑於上述之實情，目的為提供_種車用兒童 座椅，在it行座席本體的額難之情況、以及在使座席 本體相對於底座構件而旋轉之情況，使用者都可很容易地 操作。 (解決課題之手段） 為了達成上述目的，本發明之車用兒童座椅具備有： 座席本體’ 4有座席底座部及可後傾的靠背部；靠背後傾 角度固^機構’用來固定靠背部相對於座席底座部的後傾 角度；底座構件，將座席本體以可旋轉的方式支持；座席 旋轉位置ϋ定機構，絲固定座席本體之㈣於底座構件 的旋轉位置；角度鎖定解除機構，用來解除靠背後傾角度 固定機構所造成的固定狀態；旋轉鎖定解除機構，用來解 除座席旋轉位置固定機構所造成的固定狀態；以及共通操 作部，選擇性地使角度鎖定解除機構及旋轉鎖定解除機構 動作。 323046 5 201213173 除機‘及明’具備有選擇性地使角度鎖定解 操作共通的一個操作部，操作部，所以藉由 是使座席本體相對於底座構本體的後傾調整，或 略。 再件而夂轉。因此，操作變得簡 共通操作部的一個例子 棒狀體等之操作部件，Μ例槓桿、轉^1)、 向操作而使角度鎖定解除機二::操作部件往-個方 Γ二=ΓΓ乍者。或者，共通操作部可為:具 第—操作部件鄰接而配置之第二操 操作部件及卜该第一及第二操作部件之操作基部；第一 機構及旋轉作部件藉由㈣的操作使肢鎖定解除 任—方動作’且藉由不相同 另-方動作^。冑除機構及旋轉鎖定解除機構中剩下的 操作作部件進行相同的操作，係指朝相同方向 全相同亦可且知作使得兩操作部件移動的距離可完 係指朝不相_方2對兩操作部件進行不相_操作， 固定而只Μ 作兩操作部件，或者使一操作部件 容易進行呆„另—操作部件。為了使上述的不相同的操作 可構成為祐1考慮很多種構成，但舉—個實施形態來說， ㈣操部件可朝 能動作椒诚 使第一及第一知作部件在壓入位置不 據如此之實施㈣，可用簡㈣構成來實現兩 323046 6 201213173 個操作部件之不相同的操作。 以往的兒童座椅因為將操作部設在座席本體的座部 的前端部，所以在座席本體的姿勢為面向後方之情況，操 作部會為底座構件所蓋住，使得操作變得很困難。相對於 此，本發明之實施形態則是將共通操作部設在靠背部。靠 背部係從底座構件突出，所以根據上述實施形態，操作者 的手能輕易地到達共通操作部，故能提高操作性。 本發明並不限定於一個實施形態，其中，靠背後傾角 度固疋機構可具有後傾角度固定構件，該後傾角度固定構 件與形成於座席底座部之座席底座被扣合部扣合 以將後傾 角度予以ϋ定；肖度較解除機構可具有肖度鎖定解除構 件，該角度鎖定解除構件將第一操作部件及後傾角度固定 構件予以連結，座席旋轉位置固定機構可具有旋轉位置固 疋構件》亥疑轉位置固定構件安裝於座席底座部而與形成 於底座構件之底座構件被扣合部扣合；婦鎖定解除機構 可具有中間連結構件，該中間連結構件將第一操作部件及 第二操作部件予以連結而藉由該第—及第二操作部件之不 =同的㈣使㈣位置固定構件移動；共通操作部可藉由 -，作部件及第二操作部件之相同的操作而只使後傾角 度固定構件移動來解除與座席底座被扣合部之扣合，且藉 部件及第二操作部件之不相同的操作而使“ 2疋構件移動來解除與底座構件被扣合部之扣合。此 的連結’仙直接將兩個要素予料結，或者透過 干link)構件或延伸部而間接地將兩個要素予以連結之 323046 7 201213173 意。 為旋二運第二操作部件可為進退運動者，亦可 科操作部件及第二 ^ 角度鎖定解除構件可形成有相對於進=動 伸之導孔㈤de)，後傾角度固定構件 寬度方向延狀財n與料孔卡合另端的^ 對於座席底座被扣合部而插拔。 知了相 另一個實施形態係為：中間連結構件，係框接於（可 樞轉地安裝於）角度較解除構件，以 而戒由從第二操作料向下枝伸設置㈣二轉的下1 將之拉起’並在錄起時使旋轉位置m定構件移動。 另一個實施形態係為：靠背部係可階段性地調整後傾 角度’中間連結構件係在拉起時選擇性地連結至也靠背部 的各個後傾角度對應而形成於旋轉位置固定構件之複數個 連結部位。 較佳實施形態係為：靠背部可後傾到成為床狀態，在 此床狀態下，中間連結構件與旋轉位置固定構件分離而 無法使旋轉位置©定構件移I根據如此之實施形態，使 床狀態之座席本财能旋轉1此，可防止因為使得座席 本體旋轉而導致大祕傾的靠背部與㈣底座部碰撞之不 適當的使用。 323046 8 201213173 ‘（發明之效果） ' 如上所述之本發明之車用兒童座椅，由於具備有選擇 性地使角度鎖定解除機構及旋轉鎖定解除機構動作之丘通 操作部，所以在進行座席本體的後傾調整之情況、以^在 使座席本體相對於底座構件而旋轉之情況，操作者都可很 容易地進行操作。因此’在接連地進行後傾調整及旋轉位 置調整之情況下’可提高操作性。 【實施方式】 以下，根據圖式所不之實施例來詳細說明本發明之實 施形態。第1圖係顯示作為本發明的一實施例之車用兒童 座椅之縱剖面圖。第2圖係將該實施例的靠背部取出而顯 示之背面圖。第3圖係將該實施例的底座構件取出而顯示 之平面圖。車用兒童座椅11具備有：座席本體，供嬰 幼兒乘坐；以及底座構件8卜將該座席本體以可旋轉的方 式支持。座席本體13具有：座部15 ;可後傾的靠背部17 ; 以及座席底座部19，支持該座部及靠背部。 座部15的後端部與靠背部17的下端部係透過在左右 方向呈一直線延伸之連結軸71而連結成可相對轉動。座席 底座部19的左右兩側形成有一對侧壁部，此兩侧壁部支持 座部15的左右兩侧及靠背部17的左右兩側。在此附帶說 明’座部15及靠” 17係受到支持而可在前後方向乃至 上下方向移動，可形成靠背部17最為立起之椅子狀態、靠 背部17後傾之椅子狀態、以及靠背部17最為後傾之床狀 態這三種狀態。操作者可將座席本體13調整到所希望的椅 323046 9 201213173 子狀態或是床狀態’此將在後面詳細說明。 座席底座部19的下部形成有圓形的基座l9b。與此相 對，底座構件81形成有用來收容基座19b之圓形的凹部 83。如此一來，座席本體13能夠以通過底座構件81的中 心之垂直的假想線0為中心而旋轉。基座19b係由未圖示 的止動銷或止動導執加以限制使基座19b不會從凹部83 中脫出。 底座構件81係放置在車輛的座位上，且藉由繫上車 輛的座椅安全帶而固定於車輛的座位上。從底座構件的後 端部向上方突出之立起部86,設有用來固定座椅安全帶的 肩帶之鎖扣裝置（l〇ck-〇ff device)87。 靠背部17其相對於座席底座部19之後傾角度可變 化，但通常係藉由後述之靠背後傾角度固定機構加以固定 使其後傾角度不會變化。然後在進行後傾調整之際，係先 利用後述之角度鎖定解除機構將靠背後傾角度㈣機構所 造成的固定狀態予以解除，然後由操作者將靠背部往後 傾或往前傾而調整到希望的後傾角度之後，再藉由靠背後 傾角度固定機構將後傾角度予以固定。 座席本體13能夠以通過底座構件81的中心之垂直的 假想線〇為中心而旋轉，但通常係藉由後述之座席旋轉位 置固定機構加以固定使其旋轉位置不會變化。_在進行 旋轉位置㈣之際’係先湘後述之旋轉鎖定解除機構將 座席旋轉位置固㈣構所造成的固^狀態予以解除，然後 操作者將座席本體13往右轉或往左轉而調整到希望的 323046 10 201213173 、旋轉位置之後，再藉由座席旋轉位置固定機構將旋轉位置 . 予以固定。 罪ί部17的後面側設有共通操作部3〇。共通操作部 30係配設於靠背部17的左右方向中央。共通操作部3〇具 有·第-操作部件3卜與該第-操作部件31鄰接而配置 之第二操作部件32、以及支持該第一及第二 32之操作基部35。操作基部35係一體形成於靠背部Η、 的後面。操作部件3卜32係在靠背部17的後面安裝成可 運動，可在靠背部17的上下延伸方向進退運動，亦即，可 在將罪背部17所支持之嬰幼兒的頭部侧與腰部侧連結起 來之方向（長度方向）進退運動。操作者时指勾住配置於 靠背部17的上端部之操作料3卜32而操作共通操作部 30，可選擇性地使角度鎖定解除機構及旋轉鎖定解除機構 動作。詳細内容將在後面說明。 第4圖係將該實施例的共通操作部取出而顯示之斜視 圖，第5圖係顯示第4圖中的共通操作部之分解斜視圖， 此兩圖顯示的是從靠背部17的背面側看之狀態。第—操 部件31係為縱長的矩形狀，且第一操作部件31的下端呆姓 合有與第一操作部件31成為一體之往下方延伸的第一轴° 桿（first shaft)33。第一操作部件31的厚度相對較厚， 第一軸桿33的厚度則相對較薄而為扁桿狀。因此，第—軸 桿33可如第5时的虛線所示般彈性變形，而可 作部件31往操作基部35壓入。 呆 第二操作部件32形成有適合供操作者的第二指至第 323046 11 201213173 五才a勾住在上妆之橫向長形的凹部32c、以及位於凹部扣201213173 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to an operation structure of a child seat that is rotatable and reclining mounted on a seat in a vehicle. [Prior Art] The backrest portion of the seat body can be adjusted in a backward tilting manner, and the seat body can be rotated relative to the base member, and is known as, for example, Japanese Laid-Open Patent Publication No. 2002-301964 (Patent Document No.) The invention described in Japanese Laid-Open Patent Publication No. 2003-291698 (Patent Document 2). In the vehicle child seat described in Patent Document 1, when the seat body (seat body) is to be placed relative to the base member (base frame), the driver must not only rotate the operation of the front end portion of the base member, And it is necessary to pull up the front end portion of the seat body and then reclining the bar to release the fixing of the seat body. In addition, when the vehicle child seat body (seat body) described in Patent Document 2 is rotated with respect to the base member (seat base), the operator has to perform the rotation of the base member. The Ministry to disarm the seat body. Alternatively, when the rear body of the seat body (seat body) is to be used, the #author must make the rear tilting operation portion of the front end portion of the seat body to release the seat body. [PRIOR ART DOCUMENT] [Patent Document 1] Japanese Laid-Open Patent Publication No. 2002- 301964 No. 2003-291698 No. 323046 4 201213173 [Description of the Invention] However, in the past car child seat such as Bu, +, -ΤΓ -V? afl ^ B, the following problems may occur. Also, a P, because the operation portion for performing the backward tilt adjustment and the operation portion for the (four) position are disposed in separate spaces, so the operation of the operation is very complicated. In particular, in the case of the seat 3 or the horizontal side, the operation part for the backward tilt adjustment, and the age part for adjusting the money to the position are even more divided (4), and the operation becomes more complicated. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a child seat for a vehicle that can be easily used in the case where the seat body is difficult and the seat body is rotated relative to the base member. Operation. (Means for Solving the Problem) In order to achieve the above object, a child seat for a vehicle according to the present invention includes: a seat body 4 having a seat base portion and a backrest portion that can be tilted backward; and a backrest tilting angle fixing mechanism for fixing the backrest a rear tilting angle of the portion relative to the base portion of the seat; a base member rotatably supporting the seat body; a seat rotation position determining mechanism, a wire fixing seat body (4) at a rotational position of the base member; and an angle locking releasing mechanism a fixing state caused by the backrest tilting angle fixing mechanism; a rotation locking releasing mechanism for releasing a fixed state caused by the seat rotation position fixing mechanism; and a common operation portion for selectively releasing the angle locking releasing mechanism and the rotation locking Institutional action. 323046 5 201213173 In addition to the operation of the operation unit and the operation unit, the unit ‘and the ’ clearly selects the angle-locking operation, so that the seat body is adjusted backwards with respect to the base body, or omitted. Again and again. Therefore, the operation becomes a simple example of the operating member of the rod-like body, such as a lever-like operation unit, the lever of the example, the rotation of the lever, and the operation of the angle-locking release machine 2: the operation member to the side-by-side two = ΓΓ The leader. Alternatively, the common operation portion may be: a second operation member disposed adjacent to the first operation member and an operation base portion of the first and second operation members; and the first mechanism and the rotary operation member are configured by the operation of (4) The lock is released from the - party action 'and is not the same as the other action ^. The same operation is performed on the remaining operation components in the removal mechanism and the rotation lock release mechanism, which means that the same direction is the same or that the distance between the two operation members can be completely changed. The two operating members perform different operations, are fixed only to operate the two operating members, or make the operating members easy to stay. In order to make the above-mentioned different operations, the configuration can be considered as a plurality of configurations. However, in the case of an embodiment, (4) the operation component can be moved to the position of the first and first known components in the press-in position. (4), the simple (four) configuration can be used to realize the two 323046 6 201213173 operations. In the conventional child seat, since the operation portion is provided at the front end portion of the seat portion of the seat body, the posture of the seat body is rearward, and the operation portion is covered by the base member, so that the operation portion is covered by the base member. In contrast, in the embodiment of the present invention, the common operation portion is provided on the backrest portion. The backrest portion protrudes from the base member, so In the embodiment, the operator's hand can easily reach the common operation portion, so that the operability can be improved. The present invention is not limited to the embodiment, wherein the backrest tilting angle fixing mechanism can have a backward tilting angle fixing member, and the backward tilting The angle fixing member is engaged with the seat base formed on the seat base portion by the fastening portion to determine the backward tilt angle; and the shortness ratio releasing mechanism may have a right locking release member, the angle locking release member to the first operation member And the reclining angle fixing member is coupled, and the seat rotation position fixing mechanism may have a rotation position fixing member. The sea position fixing member is attached to the seat base portion and is engaged with the base member formed by the base member. The unlocking mechanism may have an intermediate connecting member that connects the first operating member and the second operating member to move the (four) position fixing member by the same (four) of the first and second operating members; The operating portion can only move the reclining angle fixing member by the same operation of the member and the second operating member. In addition to the seat base engaging engagement portion of the detained, and by the operating member and the second member are not the same operation as the "two piece goods moving member to release engagement with the base member engagement portion of the detained. The link ’ 仙 directly binds the two elements, or indirectly connects the two elements through the dry link) member or extension 323046 7 201213173. For the second operation member, the second operation member may be an advance and retreat operator, or the operation member and the second angle locking release member may be formed with a guide hole (f) de) relative to the forward/extension, and the backward inclination angle fixing member may have a width direction. The n and the hole are engaged with the other end. ^ The seat base is inserted and removed. Another embodiment is that the intermediate connecting member is framed (pivotablely mounted) to the angle releasing member, and is set to be lowered from the second operating material to the lower branch (four) and two turns. Pull it up' and move the rotating position m to the member when recording. In another embodiment, the backrest portion can adjust the back-tilt angle stepwise. The intermediate connecting member is selectively coupled to the backrest portion at the time of pulling up, and is formed in the plurality of the rotational position fixing members. Links. In a preferred embodiment, the backrest portion can be tilted back to the bed state, and in the bed state, the intermediate connecting member is separated from the rotational position fixing member, and the rotational position © the fixed member cannot be moved. According to such an embodiment, the bed is made The seat of the state can be rotated by one, which prevents the improper use of the backrest portion and the (four) base portion caused by the rotation of the seat body. 323046 8 201213173 '(Effects of the Invention) The vehicle child seat of the present invention as described above includes the Qiu Tong operation unit that selectively operates the angle lock release mechanism and the rotation lock release mechanism. The case of the back tilt adjustment of the main body can be easily operated by the operator in the case where the seat body is rotated relative to the base member. Therefore, the operability can be improved in the case where the backward tilt adjustment and the rotational position adjustment are successively performed. [Embodiment] Hereinafter, embodiments of the present invention will be described in detail based on embodiments of the drawings. Fig. 1 is a longitudinal sectional view showing a child seat for a vehicle as an embodiment of the present invention. Fig. 2 is a rear view showing the backrest portion of the embodiment taken out. Fig. 3 is a plan view showing the base member of the embodiment taken out. The child child seat 11 is provided with a seat body for the infant to ride, and a base member 8 for supporting the seat body in a rotatable manner. The seat body 13 has a seat portion 15 and a backrest portion 17 that can be tilted backward, and a seat base portion 19 that supports the seat portion and the backrest portion. The rear end portion of the seat portion 15 and the lower end portion of the backrest portion 17 are coupled to each other so as to be rotatable relative to each other through a connecting shaft 71 extending in a straight line in the left-right direction. A pair of side wall portions are formed on the right and left sides of the seat base portion 19, and the side wall portions support the left and right sides of the seat portion 15 and the right and left sides of the backrest portion 17. Incidentally, the 'seat portion 15 and the backrest 17' are supported to be movable in the front-rear direction or the vertical direction, and the chair state in which the backrest portion 17 is upright, the chair state in which the backrest portion 17 is tilted backward, and the backrest portion 17 can be formed. The three states of the most backward bed state. The operator can adjust the seat body 13 to the desired seat 323046 9 201213173 sub-state or bed state 'this will be described in detail later. The lower portion of the seat base portion 19 is formed with a circular shape. On the other hand, the base member 81 is formed with a circular recess 83 for accommodating the base 19b. Thus, the seat body 13 can be centered on the vertical imaginary line 0 passing through the center of the base member 81. The base 19b is restrained by a stopper pin or a stop guide (not shown) so that the base 19b does not come out of the recess 83. The base member 81 is placed on the seat of the vehicle and is attached to the vehicle. The seat belt is fixed to the seat of the vehicle. The rising portion 86 protruding upward from the rear end portion of the base member is provided with a locking device for fixing the shoulder belt of the seat belt (l〇ck-〇 Ff device) 87. The backrest portion 17 may have a rearward tilting angle with respect to the seat base portion 19, but is usually fixed by a backrest tilting angle fixing mechanism to be described later so that the reclining angle does not change. Then, when the backward tilting adjustment is performed First, the fixed state caused by the backrest tilt angle (4) mechanism is released by the angle lock release mechanism described later, and then the operator tilts the backrest portion backward or leans forward to adjust to the desired backward tilt angle, and then The reclining angle is fixed by the backrest tilting angle fixing mechanism. The seat body 13 is rotatable about a vertical imaginary line passing through the center of the base member 81, but is usually provided by a seat rotation position fixing mechanism to be described later. It is fixed so that its rotation position does not change. _ At the time of the rotation position (4), the rotation lock release mechanism described later is used to release the solid state caused by the seat rotation position (4), and then the operator will seat the seat body 13 Turn right or turn left to adjust to the desired 323046 10 201213173, rotate position, then rotate the position fixing mechanism by the seat The common operation unit 3 is disposed on the rear side of the sinus portion 17. The common operation unit 30 is disposed at the center in the left-right direction of the backrest portion 17. The common operation unit 3 has a first-operating member 3b. a second operating member 32 disposed adjacent to the first operating member 31 and an operating base portion 35 supporting the first and second members 32. The operating base portion 35 is integrally formed behind the backrest portion 。. Attached to the back of the backrest portion 17 to be movable, the forward and backward movement of the backrest portion 17 can be moved forward and backward, that is, in the direction in which the head side and the waist side of the infant supported by the sin back 17 are joined together ( In the longitudinal direction, the operator moves forward and backward. The operator operates the common operation unit 30 by hooking the operation material 3 32 disposed at the upper end portion of the backrest portion 17, and selectively operates the angle lock release mechanism and the rotation lock release mechanism. The details will be described later. Fig. 4 is a perspective view showing the common operation portion of the embodiment taken out, and Fig. 5 is an exploded perspective view showing the common operation portion in Fig. 4, which shows the back side from the backrest portion 17. Look at the status. The first operating member 31 has a vertically long rectangular shape, and the lower end of the first operating member 31 has a first shaft 33 extending downward from the first operating member 31. The thickness of the first operating member 31 is relatively thick, and the thickness of the first shaft 33 is relatively thin and is a flat rod shape. Therefore, the first shaft 33 can be elastically deformed as indicated by the broken line at the 5th, and the member 31 can be pressed into the operation base 35. The second operating member 32 is formed with a second finger to the operator 323046 11 201213173, a recess 32c that is hooked to the lateral shape of the upper makeup, and a recessed portion buckle
的寬度方向巾央之縱長的矩形的貫通孔32h。另外，第_C 操作部件32的下端結合有與第二操作部件32成為〜體 往下方延伸的第二軸桿34。 之 在安裝於靠背部17之第二操作部件32之中，凹部 係形成於離靠背部17較遠的一側。在第二操作部件 側部之中，離靠背部Π較近的一側之側面，有上述扁浐 的第一軸桿33與之鄰接而配置。換言之，第一軸椁犯千係 配置於靠背部17與第二軸桿34之間，第一轴桿33 ,、 和 ΙΤ <一侧 的面向著第二軸桿34,另一側的面向著靠背部17。再者 如第4圖所示，常態下，第一操作部件31係部分陷入貫通 孔32h而從貫通孔32h突出地配置於凹部32c中。第一操 作部件31的下端緣係從第一轴桿33之一側的面突出而形 成有段差。第一操作部件31利用此段差抵扣住貫通孔32h 的下端緣，另外，第一操作部件31的上端緣也與貫通孔 32h的上端緣相接觸，所以第一操作部件31會與第二操作 部件32 —起在靠背部17的上下延伸方向進退運動。藉此， 使第一操作部件31及第二操作部件32進行相同操作 第一軸桿33的下端侧，結合有與第一軸桿犯成為一 體之從第一軸桿33的中心軸向左右均等突出而形成之角度 鎖定解除構件37。作為角度鎖定解除機構之角度鎖定解^ 構件37的左右兩側’分別穿設有形成為長孔之導孔（guide) 39。此外，從角度蚊解除構件37的左右兩側緣往第二轴 桿34侧立起有一對側壁部37w。 323046 12 201213173 ^ _對側壁部37w分別形成有貫通孔m。此左右貫通 -孔37h(第5圖中以-點鏈線表示）位於共通的轴線上。此 左右貫通孔37h分別供中間連結構件41的左右突起42貫 通。如此一來，中間連結構件41便樞接於（可樞轉地安裝 於）角度鎖定解除構件37的左右兩侧緣。 中間連結構件41 可繞著上述軸線而轉動。中間連結構件41係呈大致c字形 狀，其兩端構成為相向的一對内侧突起43。中間連結構件 41以邊一對内側突起43為旋動端，以連結該兩内侧突起 之中間區域45為基端而轉動。 中間連結構件41的中間區域，除了上述朝著左右方 向向外突出之一對突起42之外，還設有沿著與上述的轴線 正交之假想平面而配置之延伸部44。具體而言，延伸部44 係分別從中間連結構件41的左右兩侧朝向與上述轉動軸 線垂直之方向延伸而形成。 沿著相互平行延伸之左右—對延伸部44形成有長孔 44h。兩長孔44h係相向配置。 第一軸桿34的下端側設有朝左右方向向外突出之一 對突起36。此兩突起36分別貫通卡入長孔44h，可沿著長 孔44h的延伸方向而滑動。 回到第4圖進行說明，第一軸桿33的下端部及第二 軸桿34的下端部外圍套設有螺旋彈簧38。彈簧38的上端 向上頂壓未顯示於第4圖中之靠背部，彈簧38的下端向下 頂壓角度鎖定解除構件37及第二軸桿34的下端部。彈簧 38以此方式彈壓兩個操作部件31、32使操作部件31、32 323046 201213173 具有向下的趨勢。因此操作部件31、32通常是位在下方位‘ 置。 第6圖係顯示在靠背部的後傾角度經固定住之固定狀 態中之後傾角度固定構件及角度鎖定解除構件的位置之說 明圖。第7圖係顯示固定狀態經解除後之後傾角度固定構 件及角度鎖定解除構件的位置之說明圖。此第6圖及第7 圖顯示的是從靠背部的前面側觀看所見之狀態。第8圖係 顯示靠背部最為立起之椅子狀態之說明圖。第9圖係顯示 靠背部從第8圖所示的狀態後傾後之椅子狀態之說明圖。 第10圖係顯示靠背部最為後傾之床狀態之說明圖。此第8 至第10圖表示的是本實施例之靠背部的後傾調整的三個 形態。第11圖係顯示第8至第1〇圖所示的座席本體的靠 背部的位置關係之說明圖。 參照第6圖至第11圖，來說明本實施例之靠背後傾 角度固定機構。靠背後傾角度固定機構具有作為後傾角度 固定構件之銷49。銷49係將兩根在左右方向延伸之棒狀 體配置成左右對稱者。銷49的一端分別從靠背部π的左 右側緣向外突出，另一端則形成為L字形且插入扣合於角 度鎖定解除構件37的導孔（guide)39。就第6圖中圖面左 側的銷49來進行說明的話’銷49的左端係從側緣17s突 出’右端則形成為向紙面下方彎折且扣合於圖面左側的導 孔39的左上端部。圖面右侧的銷49係為與上述者左右對 稱之構成。 從座席底座部19的左右兩側緣立起而相向之一對侧 14 323046 201213173 -壁21，分別形成有作為座席底座被扣合部之三個孔22a、 -22b、22c。左右一對之銷49可選擇性地插入該等孔22a、 22b、22c之任一個來固定靠背部17的後傾角度。 如第8圖所示，在靠背部17之最為立起之椅子狀態， 銷49的一端係如第6圖所示從靠背部17的侧緣17s突出， 且插入孔22a。藉此’將靠背部17的後傾角度予以固定。 操作者要使靠背部17從第8圖所示的狀態後傾時， 首先要用手指勾住共通操作部30的凹部32c往上拉。如此 拉’會抵抗彈簧38的彈壓力’而從第6圖所示的狀態變 ^到第7圖所不的狀態。亦即，使第一操作部件31及第二 操牛32做相同操作而一起向上移動。此時，透過第一 轴才干33而與第—操作部件31結合之角度鎖定解除構件37 會向相同方向往上移動相同距離。 、配置成左右對稱之一對導孔39係分別斜向延伸而形 成為兩者上端部的左右方向距離最遠 ’兩者下端部的左右 方向距離最近之形態。 分別扣合於如上述的導孔3 9 i分別向左右方向外侧 延伸之銷49係在靠背部Π中安裝成不能在靠背部π的上 下（伸方向移動。換言之，銷49係安裝成只能在銷的長度 方向（左右方向）進退運動，不能在與長度垂直的方向移又 動因此’隨著角度鎖定解除構件37之導孔39之往上移 動’銷49的該另—端會沿著長形之導孔39滑動，而將銷 2的該—端往靠背部17的左右方向中央侧拉（第7圖）。 結果’將銷49的該一端從孔❿中拉出，轉除靠背後傾 323046 15 201213173 角度固定機構所造成之固定狀態。接著，操作者在維持著 將第一操作部件31及第二操作部件32往上拉著的狀態下 扳動靠背部17以將之調整到希望的後傾角度，然後放手讓 手離開凹部32c。放手後，彈簣38的彈壓力會使得第一操 作部件31及第二操作部件32回歸到通常的下方位置（從第 7圖的狀態到第6圖的狀態），靠背部17的後傾角度再度 受到固定。 上述後傾調整係在椅子狀態與床狀態之間進行。而 且，也在靠背部最為立起之椅子狀態與靠背部相對地向後 傾之椅子狀態之間進行。 在此附帶說明，因為第一操作部件31與第二操作部 件32的孔32h扣合（第4圖），所以第一操作部件31會與 第二操作部件32 —起受到相同操作（第6、第7圖）。另外， 使第一操作部件31與第二操作部件32相連結之中間連結 構件41，也會一起在上下延伸方向進退運動，然而在如此 之相同操作期間，與後述的旋轉位置固定構件51係分隔開 來的（第6圖、第7圖）。因此内側突起43並不與旋轉位置 固定構件51扣合。 第11圖係顯示第8至第10圖所示的座席本體（尤其 是靠背部）的位置關係之說明圖，第11圖中，A係對應於 第8圖，B係對應於第9圖，C係對應於第10圖。透過連 結軸71而相連結之座部15及靠背部17,會與後傾調整動 作連動。具體而言，連結軸71、靠背部17、座部15這三 個構件係由分別形成於一對側壁21之導槽23、25及分別 16 323046 201213173 形成於*背部17的左右 你責皆邱县也 導槽24分別加以導弓丨， °為立起之椅子狀態Α移動到靠背 傾之椅子_售椅子狀態B移動==地向後 從靠背部㈣地向後傾之椅j椅子狀態^以及， r °狀怎B移動到床狀態c，或 從床狀t c移動到椅子狀態B。 =體而言’連結軸71的左右兩端部分別插穿入左邊 =的第—導槽23。另外，相向而在左右方向延伸之一 對以部軸18分別固設於左右側壁21上 轴18係在靠背部Η的上下延伸方向的中央區域 18位於與連結轴71相較較為上方之位置。左右兩個轴18 分別插穿人左邊及右邊的第二導槽24。以此方式，靠背部 17透過軸18以及連結軸71而支持在座席底座部19上。 另外，在左右方向延伸之座部軸（未圖示）係設於座部 15的前後方向中央區域。此軸位於與連結軸71相較較為 前方之位置。座部轴的左右兩端部分別插穿入左邊及右邊 的第三導槽25。以此方式，座部15透過座部軸以及連結 轴71而支持在座席底座部19上。 連結軸71可沿著第一導槽23而滑動，靠背部軸1 § 可沿著第一導槽24而滑動’靠背部17藉此而移動，接受 後傾調整。設於座部15之未圖示的座部軸可沿著第三導槽 25而滑動’座部15藉此而與靠背部π連動。 因為連結軸71可沿著第一導槽23而滑動，所以可理 解為何在第11圖的狀態A、B、C中，靠背部17的下端部 分別位於不同的位置。另外，參照第u圖中以實線及兩點 323046 17 201213173 鏈線表示之靠背部17可知：中間連結構件41在A、B、C 各狀態，其位置雖會變化，但與旋轉位置固定構件51都是 分隔開來的。亦即，不論在第8至第10圖所示的三個狀態 的哪一個，在操作部件3卜32位於通常的下方位置期間（第 6圖），内側突起43都不與後述之旋轉位置固定構件51扣 合。以及，在操作部件31、32受到相同操作期間（第7圖）， 内側突起43也不與旋轉位置固定構件51扣合。 第8圖至第10圖顯示的雖然是使座席本體13面向後 方而進行後傾調整之情況，但亦可使座席本體13相對於底 座構件81打橫而進行後候調整。此外，也不排除使座席本 體13面向前方而進行後傾調整之情形。 接著，說明本實施例之旋轉鎖定解除機構。第12圖 係比較共通操作部及中間連結構件的動作而顯示之說明 圖，其中（a)顯示通常的狀態，（b)顯示第一操作部件經壓 入而不能移動之狀態，（c)顯示第二操作部件經拉起之狀 態，且三者皆是以模式圖的方式顯示從靠背部的左右方向 所見之圖。第12圖（a)顯示與第6圖相同之狀態，其中操 作部件31、32位於通常的下方位置。操作者將手指伸入凹 部32c並將第一操作部件31往内壓，第一操作部件31如 第12圖（b)所示般彈性變形而撓曲，第一操作部件31因而 跑到貫通孔32h外而收容在形成操作基部35之凹部35c 中。凹部35c係為上側形成有段差35d之凹陷。因此，第 一操作部件31的上端會為段差35d所卡住，限制第一操作 部件31從凹部35c往上方之移動。 18 323046 201213173 ' 在第12圖（b)中，操作去田主共 .·第一操作部件31屋入之产 凹部32c並在將 如第12圖㈤所示H下/字第二操作部件課上拉， 第一刼作部件31留右τ 只有第二操作部件32往上方移== 動， 此種不相同的操作中，透過第一軸桿33二。 3!結合之角度鎖定解除構件打並不移動，、第—^作糾 :與第二操作部件32結合之突 的向下彈壓力而向上方移動。上方移動之突^几彈菁38 44h内滑動而將延伸部 起36在長孔 間連結構㈣以Γ解除構件仏使中 (c))o 為中心軸而轉動(第12圖⑻一 在此附帶說明，不論在第12圖（ 態，角度鎖定解除構件37都不_所二)的哪一個狀^ 銷49並不在左右方向移動。因此，在操之理解成疋 不相同操作下，角度鎖定解除機構並不。牛3卜32的 轉鎖定解除機構之中間連結構件41會做=有作為旋 此’在前述之操作部件3卜32的相同 = 定解除機構會動作，t間連結構件41並錢轉動有 =鎖 6圖至第1〇圖）。 得勒動作（第 以：，除了第丨圖至第12圖之外，亦適宜 13圖至第19圖來說明第12圖所示之操作部件3ι ^的 不相同操似巾間連結構件41的轉動_使得座席本體 13的旋轉位置的固定狀態解除之詳細内容。第 示只將第二操作部件往上方拉到—半的 圖: 323046 19 201213173 第14圖係顯示中間連結構件扣合到了旋轉位置固定構件 上的狀態之說明圖。第15圖係顯示將第13圖中的第二操 作部件完全往上拉後的狀態之縱剖面圖。第16圖係顯示使 第15圖所示的座席本體旋轉180度後的狀態之縱剖面圖。 第17圖係顯示使第16圖所示的第二操作部件向下返回途 中的狀態之縱剖面圖。座席底座部19的内部設有可轉動之 旋轉位置固定構件51。 作為座席旋轉位置固定機構之旋轉位置固定構件51 係具有在水平方向延伸之轉動軸52，且透過轉動軸52而 樞接於（可樞轉地安裝於）座席底座部19。旋轉位置固定構 件51中之距轉動軸52較遠的部位設有旋轉防止突起53。 旋轉防止突起53係貫通座席底座部19而向下突出到外 側，且通常會插入底座構件81上穿設形成的作為底座構件 被扣合部之承扣孔85。向下延伸之承扣孔85如第3圖所 示，在以0表示之旋轉中心的圓周方向隔著間隔而形成。 就本實施例而言，係隔著90度的間隔而形成於向前位置、 向後位置、向左打橫位置、及向右打橫位置之四個位置。 如第13至第17圖所示，位於轉動軸52的兩端側之 旋轉位置固定構件51的兩側部，形成有連結溝槽54, 55。 座席本體13之旋轉位置的調整，係依第1、第13、 第15、第16、第17、第8圖之順序進行。 在第1圖所示之狀態，如第12圖（a)所示，第一操作 部件31與第二操作部件32相卡合。在此狀態，操作者將 第一操作部件31壓入以將兩操作部件31、32的卡合予以 20 323046 201213173 - 解除（第12圖（b))，然後開始只將第二操作部件32往上 _ . 拉，中間連結構件41開始轉動，使得内側突起43如第13 圖所示到達連結溝槽54的端部。 然後操作者繼續只將第二操作部件32往上拉，中間 連結構件41繼續轉動，使得内側突起43伸入連結溝槽54 而沿著連結溝槽54滑動。如此一來便使得旋轉位置固定構 件51開始轉動。將第二操作部件32往上拉到第12圖（c) 所示之上方位置，旋轉防止突起53如第15圖所示完全從 承扣孔85中拔出。 接著，操作者用將第二操作部件32往上拉的手使座 席本體13旋轉，使之轉到例如第16圖所示之向後的旋轉 位置。 最後，操作者的手離開第二操作部件32，第二操作部 件32及突起36在彈簀38的彈壓力作用下回歸到通常的下 方位置，中間連結構件41也跟著轉動而回歸到第12圖（a) 所示之原來的位置。如此一來内側突起43便如第17圖所 示回到連結溝槽54的端部，且最終如第8圖所示與旋轉位 置固定構件51分離。因此旋轉位置固定構件51會因為本 身的重量而轉動回到通常的位置，旋轉防止突起53隨之插 入對應的承扣孔85。如此一來，座席本體13的旋轉位置 便再度受到固定（第17圖）。 另外，第二操作部件32回歸到通常的下方位置，第 二操作部件32的貫通孔32h便位在與第一操作部件31相 同的位置，第一操作部件31於是藉由第一轴桿33的回復 21 323046 201213173 ?而穿入貫通孔32h。如此一來，第一操作部件31及第二 麵作部件32便都回歸到第12圖（3)所示之通常的位置。 △第13圖至第π圖顯示的雖是部最為立起之椅子 狀態，但在本實_中，即使是在部已相對地後傾之 椅子狀態’也可進行旋轉位置之調整，以下參照第U圖及 第19圖來說明此點。第18圖係顯示在已使靠背部後傾之 椅子狀態只將第二操作部件往上方㈣—半的狀態之縱剖 面圖。第19,顯示將第18圖中的第二操作部件完全往 上拉後的狀態之縱剖面圖。 在此後傾椅子狀態下之座席本體13的旋轉位置的調 整’係依第9、第18、第19圖之順序進行。操作者將第一 操作部件31壓入到操作基部35的凹部脱内然後只將第 -操作料3 2往上拉，内側突起4 3如第18圖所示到達連 結溝槽55的端部。 然後操作者繼續只將第二操作部件32往上拉，中間 連結構件41、繼續轉動，使得内側突起 而沿著賴_55㈣。域—來紐紐轉;置^5 件51開始轉動。將第二操作部件32往上拉到第12圖㈦ 所示之上方位置，旋轉防止突起53如第19圖所示完全從 承扣孔85中拔出。 接著’操作者用將第二操作部件32往上拉的手使座 席本體13旋轉’使之轉到例如打橫_轉位置。 最後，操作者的手離開第二操作部件32，第二操作部 件32在彈簧38的_力作用下回歸到通常的下方位置， 323046 22 201213173 • 旋轉位置固定構件51隨之因為本身的重量而轉動回到通 . 常的位置，旋轉防止突起53隨之插入對應的承扣孔，座席 本體13的旋轉位置於是再度受到固定。 在如上所述之本實施例中，不論在靠背部是最為立起 還是已經後傾之狀態，都可進行旋轉位置之調整。然而， 在床狀態下，並無法調整旋轉位置。這是因為：與第8及 第9圖所示之椅子狀態相比較，在第10圖所示之床狀態下 使中間連結構件41往上移動，即使中間連結構件41會做 轉動動作，所到達的也是不會與旋轉位置固定構件51接觸 之位置，中間連結構件41會一直與旋轉位置固定構件51 分隔開來之緣故。根據如此之本實施例，可防止因為座席 本體13旋轉而導致已最為後傾的靠背部17與底座構件81 的立起部86碰撞之不良情況。 以上，參照圖式而針對本發明之實施形態進行了說 明，然而本發明並不限定於圖示的實施形態。還可在與本 發明相同之範圍内，或均等的範圍内，對於圖示的實施形 態做各種的修正或變化。 [產業上的可利用性] 本發明之車用兒童座椅，利用於可調整旋轉位置及可 後傾調整之車用兒童座椅中相當有利。 【圖式簡單說明】 第1圖係顯示作為本發明的一實施例之車用兒童座椅 之縱剖面圖。 第2圖係將該實施例的靠背部取出而顯示之背面圖。 23 323046 201213173 第3圖係將該實施例的底座構件取出而顯示之平面 圖。 第4圖係將該實施例的共通操作部取出而顯示之斜視 圖。 第5圖係顯示第4圖中的共通操作部之分解斜視圖。 第6圖係顯示在靠背部的後傾角度經固定住之固定狀 態中之後傾角度固定構件及角度鎖定解除構件的位置之說 第7圖係顯示固定狀態經解除後之後傾角度固定構件 及角度鎖定解除構件的位置之說明圖。 第8圖係顯示靠背部最為立起之椅子狀態之說明圖。 第9圖係顯示靠背部從第8圖所示的狀態後傾後之椅 子狀態之說明圖。 第10圖係顯不靠背部最為後傾之床狀態之說明圖。 第11圖係顯示第8至第10 ϋ中所示的座席本體的位 置關係之說明圖。 =2圖係比較共通操作部及中間連結構件的動作而 顯不之說明圖， 作部件經壓人W 通常的狀態，⑹顯示第 拉起之狀態。％移動之狀態，⑹顯示第二操作部件經 第13圖係翻一 狀態之縱剖面圖丁"將第二操作部件往上方拉到一爭的 第14圖係_ _ 構件上的肤能•不間連結構件扣合到了旋轉位ί固定 %恶之說明圖。 24 323046 201213173 • 第15圖係顯示將第13圖中的第二操作部件完全往上 . 拉後的狀態之縱剖面圖。 第16圖係顯示使第15圖所示的座席本體旋轉180度 後的狀態之縱剖面圖。 第17圖係顯示使第16圖所示的第二操作部件向下返 回途中的狀態之縱剖面圖。 第18圖係顯示在使靠背部後傾之椅子狀態只將第二 操作部件往上方拉到一半的狀態之縱剖面圖。 第19圖係顯示將第18圖中的第二操作部件完全往上 拉後的狀態之縱剖面圖。 【主要元件符號說明】 11 車用兒童座椅 13 座席本體 15 座部 17 靠背部 18 靠背部軸 19 座席底座部 21 側壁 22a、 22b 、 22c 孑L 23 第一導槽 24 第二導槽 25 第三導槽 30 共通操作部 31 第一操作部件 32 第二操作部件 33 第一軸桿 34 第二軸桿 35 操作基部 35c 凹部 36 突起 37 角度鎖定解除構件 38 彈簣 39 導孔 41 中間連結構件 42 突起 43 内側突起 44 延伸部 25 323046 201213173 44h 長孔 49 銷 51 旋轉位置固定構件52 轉動軸 53 旋轉防止突起 54、55 連結溝槽 71 連結軸 81 底座構件 83 凹部 85 承扣孔 86 立起部 87 鎖扣裝置 323046The rectangular through hole 32h of the longitudinal direction of the width direction of the towel. Further, a lower end of the first _C operating member 32 is coupled to a second shaft 34 extending downward from the second operating member 32. Among the second operating members 32 attached to the backrest portion 17, the recessed portion is formed on the side farther from the backrest portion 17. Among the side portions of the second operating member, the side of the side closer to the backrest portion , is disposed adjacent to the first shaft 33 having the above-mentioned flat ridge. In other words, the first axle is disposed between the backrest portion 17 and the second shaft 34, and the first shaft 33, and the ΙΤ < one side faces the second shaft 34, and the other side faces The backrest portion 17 is worn. Further, as shown in Fig. 4, in the normal state, the first operating member 31 is partially caught in the through hole 32h and protrudes from the through hole 32h in the recess 32c. The lower end edge of the first operating member 31 protrudes from the surface on one side of the first shaft 33 to form a step. The first operating member 31 abuts against the lower end edge of the through hole 32h by the step, and the upper end edge of the first operating member 31 also contacts the upper end edge of the through hole 32h, so the first operating member 31 and the second operation The member 32 starts to move forward and backward in the up and down direction of the backrest portion 17. Thereby, the first operating member 31 and the second operating member 32 are operated to perform the same operation on the lower end side of the first shaft 33, and are integrated with the first shaft from the center axis of the first shaft 33. The angle locking releasing member 37 is formed to protrude. A guide 39 formed as a long hole is formed in each of the left and right sides ' of the angle locking mechanism 37 as the angle lock releasing mechanism. Further, a pair of side wall portions 37w are erected from the left and right side edges of the angle mosquito releasing member 37 toward the second shaft 34 side. 323046 12 201213173 ^ _ The through hole m is formed in each of the side wall portions 37w. The left and right through-holes 37h (indicated by a dotted chain in Fig. 5) are located on a common axis. The right and left through holes 37h are respectively provided to the left and right projections 42 of the intermediate connecting member 41. In this manner, the intermediate link member 41 is pivotally (portably mounted) to the left and right side edges of the angle lock release member 37. The intermediate link member 41 is rotatable about the above axis. The intermediate connecting member 41 has a substantially c-shape, and both ends thereof are formed as a pair of inner protrusions 43 facing each other. The intermediate connecting member 41 is rotated at the base end by the pair of inner protrusions 43 and the intermediate portion 45 connecting the inner protrusions. The intermediate portion of the intermediate connecting member 41 is provided with an extending portion 44 which is disposed along a virtual plane orthogonal to the above-described axis, in addition to the pair of projections 42 projecting outward in the left-right direction. Specifically, the extending portions 44 are formed to extend from the left and right sides of the intermediate connecting member 41 in a direction perpendicular to the rotation axis. The long and left holes 44h are formed in the extending portion 44 along the left and right sides extending in parallel with each other. The two long holes 44h are arranged in opposite directions. The lower end side of the first shaft 34 is provided with a pair of projections 36 projecting outward in the left-right direction. The two projections 36 are respectively inserted into the long holes 44h and are slidable along the extending direction of the long holes 44h. Referring back to Fig. 4, a coil spring 38 is sleeved around the lower end portion of the first shaft 33 and the lower end portion of the second shaft 34. The upper end of the spring 38 presses up the backrest portion not shown in Fig. 4, and the lower end of the spring 38 presses down the lower end portions of the angle lock releasing member 37 and the second shaft 34 downward. The spring 38 biases the two operating members 31, 32 in this manner so that the operating members 31, 32 323046 201213173 have a downward tendency. Therefore, the operating members 31, 32 are normally positioned in the lower position. Fig. 6 is an explanatory view showing the positions of the tilt angle fixing member and the angle lock releasing member after the back tilt angle of the backrest portion is fixed in a fixed state. Fig. 7 is an explanatory view showing the positions of the rear tilt angle fixing member and the angle lock releasing member after the release state is released. This Fig. 6 and Fig. 7 show the state seen from the front side of the backrest portion. Fig. 8 is an explanatory view showing the state of the chair in which the backrest portion is most upright. Fig. 9 is an explanatory view showing the state of the chair in which the backrest portion is tilted rearward from the state shown in Fig. 8. Fig. 10 is an explanatory view showing the state of the backrest bed of the backrest portion. This eighth to tenth views show three forms of the reclining adjustment of the backrest portion of the present embodiment. Fig. 11 is an explanatory view showing the positional relationship of the back of the seat body shown in Figs. 8 to 1 . The backrest tilt angle fixing mechanism of this embodiment will be described with reference to Figs. 6 to 11. The backrest reclining angle fixing mechanism has a pin 49 as a reclining angle fixing member. The pin 49 is configured such that two rods extending in the left-right direction are arranged to be bilaterally symmetrical. One end of the pin 49 protrudes outward from the left right edge of the backrest portion π, and the other end is formed in an L shape and is inserted into a guide 39 that is engaged with the angle lock releasing member 37. In the case of the pin 49 on the left side of the drawing in Fig. 6, the left end of the pin 49 protrudes from the side edge 17s, and the right end is formed to be bent downward from the paper surface and fastened to the upper left end of the guide hole 39 on the left side of the drawing. unit. The pin 49 on the right side of the drawing is configured to be symmetrical to the above. Three holes 22a, -22b, and 22c as the seat base-fastened portions are respectively formed from the left and right side edges of the seat base portion 19 and are opposed to one side 14 323046 201213173 - wall 21, respectively. A pair of left and right pins 49 are selectively insertable into any of the holes 22a, 22b, 22c to fix the back tilt angle of the backrest portion 17. As shown in Fig. 8, in the state of the chair in which the backrest portion 17 is most upright, one end of the pin 49 protrudes from the side edge 17s of the backrest portion 17 as shown in Fig. 6, and is inserted into the hole 22a. Thereby, the back tilt angle of the backrest portion 17 is fixed. When the operator tilts the backrest portion 17 from the state shown in Fig. 8, first, the finger is hooked up by the concave portion 32c of the common operation portion 30. Thus, the pull "will resist the spring pressure of the spring 38" and will change from the state shown in Fig. 6 to the state shown in Fig. 7. That is, the first operating member 31 and the second operating unit 32 are caused to perform the same operation and move upward together. At this time, the angle lock releasing member 37 which is coupled to the first operating member 31 through the first shaft member 33 is moved upward by the same distance in the same direction. One of the right and left symmetrical guide holes 39 is obliquely extended to form a shape in which the distance between the left and right ends of the upper end portions is the closest to the left and right directions of the lower end portions. The pins 49 respectively fastened to the outer side in the left-right direction of the guide holes 3 9 as described above are attached to the backrest portion so as not to be movable up and down in the backrest portion π (in other words, the pin 49 is attached only to The forward and backward movement in the longitudinal direction of the pin (left-right direction) cannot be moved in the direction perpendicular to the length, so that the other end of the pin 49 will move along with the guide hole 39 of the angle locking releasing member 37. The elongated guide hole 39 slides, and the end of the pin 2 is pulled toward the center in the left-right direction of the backrest portion 17 (Fig. 7). As a result, 'the end of the pin 49 is pulled out from the hole, and the turn is removed. Back tilt 323046 15 201213173 Fixed state caused by the angle fixing mechanism. Then, the operator pulls the backrest portion 17 to adjust it to the state in which the first operating member 31 and the second operating member 32 are pulled upward. The desired reclining angle is then released and the hand is allowed to leave the recess 32c. After the hand is released, the spring pressure of the magazine 38 causes the first operating member 31 and the second operating member 32 to return to the normal lower position (from the state of Fig. 7 to The state of Figure 6) The back tilting angle of the portion 17 is again fixed. The back tilting adjustment is performed between the chair state and the bed state. Moreover, the state of the chair in which the backrest portion is most up is also between the state of the chair that is tilted backward relative to the backrest portion. Incidentally, since the first operating member 31 is engaged with the hole 32h of the second operating member 32 (Fig. 4), the first operating member 31 will be subjected to the same operation as the second operating member 32 (6th) In addition, the intermediate connecting member 41 that connects the first operating member 31 and the second operating member 32 also moves forward and backward in the vertical extension direction. However, during such the same operation, the rotation is described later. The position fixing members 51 are spaced apart (Fig. 6 and Fig. 7). Therefore, the inner protrusions 43 are not engaged with the rotational position fixing members 51. Fig. 11 shows the seats shown in Figs. 8 to 10. FIG. 11 is a view showing a positional relationship between a main body (particularly a backrest portion), and FIG. 11 corresponds to FIG. 8 , B corresponds to FIG. 9 , and C corresponds to FIG. 10 . Seat 15 and backrest 1 7. The three components of the connecting shaft 71, the backrest portion 17, and the seat portion 15 are formed by the guide grooves 23, 25 formed in the pair of side walls 21, respectively, and 16 323046 201213173, respectively. On the back of the back of the 17th, you are responsible for the Qiu County and the guide groove 24, respectively, to guide the bow, ° for the chair state of the rise, move to the backrest chair _ sale chair state B move == ground backwards from the backrest (four) The backrest chair j chair state ^ and, r ° shape B move to the bed state c, or move from the bed shape tc to the chair state B. = body] the left and right ends of the connection shaft 71 are respectively inserted into the left side The first guide groove 23 of the same direction, and the pair of right and left sides are respectively fixed to the right and left side walls 21, and the shaft 18 is attached to the central portion 18 of the backrest portion 上下 in the vertical direction. 71 is relatively higher than the position above. The left and right shafts 18 are respectively inserted through the second guide grooves 24 on the left and right sides of the person. In this way, the backrest portion 17 is supported by the seat base portion 19 through the shaft 18 and the coupling shaft 71. Further, a seat shaft (not shown) extending in the left-right direction is provided in a central region in the front-rear direction of the seat portion 15. This shaft is located forward of the connecting shaft 71. The left and right end portions of the seat shaft are inserted through the third guide grooves 25 on the left and right sides, respectively. In this way, the seat portion 15 is supported by the seat base portion 19 through the seat shaft and the coupling shaft 71. The connecting shaft 71 is slidable along the first guide groove 23, and the backrest shaft 1 § is slidable along the first guide groove 24, and the backrest portion 17 is thereby moved to receive the backward tilt adjustment. The seat shaft (not shown) provided in the seat portion 15 is slidable along the third guide groove 25, and the seat portion 15 is interlocked with the backrest portion π. Since the connecting shaft 71 can slide along the first guide groove 23, it can be understood why the lower end portions of the backrest portion 17 are located at different positions in the states A, B, and C of Fig. 11 . In addition, referring to the backrest portion 17 indicated by the solid line and the two-point 323046 17 201213173 chain line in the first drawing, the intermediate connecting member 41 may be changed in position in each of the states A, B, and C, but the rotating position fixing member may be used. 51 are separated. That is, regardless of which of the three states shown in the eighth to tenth figures, while the operation member 3 is in the normal lower position (Fig. 6), the inner protrusions 43 are not fixed to the rotational position described later. The member 51 is fastened. Further, while the operation members 31, 32 are subjected to the same operation (Fig. 7), the inner protrusions 43 are not engaged with the rotation position fixing member 51. Although the case shown in Figs. 8 to 10 is such that the seat body 13 faces rearward and is tilted backward, the seat body 13 can be traversed with respect to the base member 81 to be adjusted later. Further, the case where the seat body 13 is facing forward and the backward tilt adjustment is not excluded. Next, the rotation lock release mechanism of this embodiment will be described. Fig. 12 is an explanatory view showing the operation of the common operation unit and the intermediate connection member, wherein (a) shows a normal state, (b) shows a state in which the first operation member is pressed and cannot be moved, and (c) shows The second operating member is pulled up, and all of them are displayed in a schematic view from the left-right direction of the backrest portion. Fig. 12(a) shows the same state as Fig. 6, in which the operating members 31, 32 are located at a normal lower position. The operator pushes the finger into the recess 32c and presses the first operating member 31 inward. The first operating member 31 is elastically deformed and deflected as shown in Fig. 12(b), and the first operating member 31 thus runs through the through hole. 32h is housed in the recess 35c forming the operation base 35. The recess 35c is a recess in which the step 35d is formed on the upper side. Therefore, the upper end of the first operating member 31 is caught by the step 35d, and the first operating member 31 is restricted from moving upward from the recess 35c. 18 323046 201213173 ' In Fig. 12(b), the operation of the main unit 31 is entered into the recess 32c and the second operating part is shown in Fig. 12(V). Pulling up, the first clamping member 31 is left τ. Only the second operating member 32 is moved upwards ==, and in this different operation, the first shaft 33 is transmitted through the second shaft 33. 3! The combined angle locking releasing member does not move, and the first correction is performed by the downward pressing pressure combined with the second operating member 32. The upper moving part of the moving elastic 38 is slid within 44h, and the extending part 36 is rotated in the long hole connection structure (4) by the Γ releasing member 仏 (c)) o as a central axis (Fig. 12 (8) one here Incidentally, the shape of the pin 49 does not move in the left-right direction, regardless of the state of Fig. 12 (the state in which the angle lock releasing member 37 is not provided). Therefore, the angle is locked in the operation which is understood to be different. The disengagement mechanism does not. The intermediate connection member 41 of the rotation lock release mechanism of the cow 3b 32 does the same as the same operation of the above-mentioned operation member 3b 32, and the connection member 41 is connected between the t Money rotation has = lock 6 map to the first map). The action of the Dresdner (in the following: in addition to the second to the twelfth figure, it is also appropriate to refer to Fig. 19 to Fig. 19 to illustrate the different operation of the operating member 3ι ^ shown in Fig. 12 Rotation_details the release of the fixed position of the rotational position of the seat body 13. The first embodiment only pulls the second operating member up to the half-figure: 323046 19 201213173 Figure 14 shows the intermediate connecting member snapped to the rotational position Fig. 15 is a longitudinal sectional view showing a state in which the second operating member in Fig. 13 is fully pulled up. Fig. 16 is a view showing the seat body shown in Fig. 15. Fig. 17 is a longitudinal sectional view showing a state in which the second operating member shown in Fig. 16 is returned to the middle. The seat base portion 19 is provided with a rotatable rotation. The position fixing member 51. The rotation position fixing member 51 as the seat rotation position fixing mechanism has a rotation shaft 52 extending in the horizontal direction, and is pivotally connected (pivotablely mounted) to the seat base portion 19 via the rotation shaft 52. Spin The rotation preventing protrusion 53 is provided at a position farther from the rotation shaft 52 in the position fixing member 51. The rotation preventing protrusion 53 is formed to penetrate the seat base portion 19 and protrude downward to the outside, and is usually inserted into the base member 81. As the buckle hole 85 of the base member engagement portion, the downwardly extending buckle hole 85 is formed at intervals in the circumferential direction of the rotation center indicated by 0 as shown in Fig. 3. It is formed at four positions separated by a 90-degree interval at a forward position, a rearward position, a leftward lateral position, and a rightward lateral position. As shown in FIGS. 13 to 17, at both ends of the rotational shaft 52 The connecting grooves 54 and 55 are formed on both side portions of the side rotation position fixing member 51. The adjustment of the rotational position of the seat body 13 is based on the first, thirteenth, fifteenth, sixteenth, seventeenth, and eightth drawings. In the state shown in Fig. 1, as shown in Fig. 12(a), the first operating member 31 is engaged with the second operating member 32. In this state, the operator operates the first operating member 31. Pressing in to bring the two operating parts 31, 32 into engagement 20 323046 201213173 - Release (Fig. 12(b)), and then only the second operating member 32 is pulled up, the intermediate connecting member 41 starts to rotate, so that the inner protrusion 43 reaches the end of the coupling groove 54 as shown in Fig. 13. Then the operator continues to pull up only the second operating member 32, and the intermediate connecting member 41 continues to rotate, so that the inner protrusion 43 projects into the coupling groove 54 and slides along the coupling groove 54. Thus, the rotational position is fixed. The member 51 starts to rotate. The second operating member 32 is pulled up to the upper position shown in Fig. 12(c), and the rotation preventing projection 53 is completely pulled out from the buckle hole 85 as shown in Fig. 15. Next, the operator rotates the seat body 13 by the hand pulling up the second operating member 32 to turn it to the rearward rotational position shown in Fig. 16, for example. Finally, the operator's hand leaves the second operating member 32, and the second operating member 32 and the projection 36 return to the normal lower position under the elastic pressure of the magazine 38, and the intermediate connecting member 41 also rotates to return to the 12th figure. (a) The original location shown. As a result, the inner projection 43 is returned to the end of the coupling groove 54 as shown in Fig. 17, and finally separated from the rotational position fixing member 51 as shown in Fig. 8. Therefore, the rotational position fixing member 51 is rotated back to the normal position due to the weight of the body, and the rotation preventing projection 53 is inserted into the corresponding buckle hole 85. As a result, the rotational position of the seat body 13 is again fixed (Fig. 17). In addition, the second operating member 32 returns to the normal lower position, and the through hole 32h of the second operating member 32 is located at the same position as the first operating member 31, and the first operating member 31 is then passed by the first shaft 33. Reply 21 323046 201213173 and penetrate into the through hole 32h. As a result, the first operating member 31 and the second facing member 32 return to the normal position shown in Fig. 12 (3). △The figure from Fig. 13 to Fig. π shows the state of the most upright chair. However, in this case, the position of the chair can be adjusted even if the part has been tilted backwards. Figure U and Figure 19 illustrate this point. Fig. 18 is a longitudinal cross-sectional view showing a state in which the second operating member is turned upward (four)-half in a state in which the backrest portion has been tilted backward. In the nineteenth aspect, a longitudinal sectional view showing a state in which the second operating member in Fig. 18 is completely pulled up is shown. The adjustment of the rotational position of the seat body 13 in the state of the rear tilting chair is performed in the order of the ninth, eighteenth, and nineteenth drawings. The operator presses the first operating member 31 into the recess of the operating base 35 and then pulls up only the first operating material 3 2, and the inner projection 43 reaches the end of the coupling groove 55 as shown in Fig. 18. Then the operator continues to pull up only the second operating member 32, and the intermediate connecting member 41 continues to rotate so that the inner protrusion is along the lag (55). Domain - to New Zealand turn; set 5 pieces 51 to start rotating. The second operating member 32 is pulled up to the upper position shown in Fig. 12 (7), and the rotation preventing projection 53 is completely pulled out from the buckle hole 85 as shown in Fig. 19. Next, the operator rotates the seat body 13 by the hand pulling the second operating member 32 to turn it to, for example, the traverse position. Finally, the operator's hand leaves the second operating member 32, and the second operating member 32 returns to the normal lower position under the force of the spring 38, 323046 22 201213173 • The rotational position fixing member 51 is rotated by its own weight Returning to the normal position, the rotation preventing projection 53 is inserted into the corresponding buckle hole, and the rotational position of the seat body 13 is again fixed. In the present embodiment as described above, the adjustment of the rotational position can be performed regardless of whether the backrest portion is the most upright or has been tilted backward. However, in the bed state, the rotational position cannot be adjusted. This is because the intermediate connecting member 41 is moved upward in the bed state shown in Fig. 10 as compared with the state of the chair shown in Figs. 8 and 9, even if the intermediate connecting member 41 is rotated. It is also a position that does not come into contact with the rotational position fixing member 51, and the intermediate connecting member 41 is always separated from the rotational position fixing member 51. According to this embodiment as described above, it is possible to prevent the backrest portion 17 which has been tilted most backward from colliding with the rising portion 86 of the base member 81 due to the rotation of the seat body 13. Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications or changes can be made to the illustrated embodiment without departing from the scope of the invention. [Industrial Applicability] The child seat for a vehicle of the present invention is advantageously used in a child seat for a vehicle that can adjust a rotational position and a backward tilt adjustment. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing a child seat for a vehicle as an embodiment of the present invention. Fig. 2 is a rear view showing the backrest portion of the embodiment taken out. 23 323046 201213173 Fig. 3 is a plan view showing the base member of the embodiment taken out. Fig. 4 is a perspective view showing the common operation portion of the embodiment taken out. Fig. 5 is an exploded perspective view showing the common operation portion in Fig. 4. Fig. 6 is a view showing the position of the tilting angle fixing member and the angle locking releasing member after the back tilting angle of the backrest portion is fixed in a fixed state. Fig. 7 shows the tilting angle fixing member and the angle after the fixed state is released. An explanatory diagram of the position of the unlocking member. Fig. 8 is an explanatory view showing the state of the chair in which the backrest portion is most upright. Fig. 9 is an explanatory view showing a state in which the backrest portion is tilted rearward from the state shown in Fig. 8. Fig. 10 is an explanatory view showing the state of the most backward bed of the backrest portion. Fig. 11 is an explanatory view showing the positional relationship of the seat body shown in Figs. 8 to 10. The Fig. 2 compares the operation of the common operation unit and the intermediate connection member, and shows the figure. The part is pressed by the normal state of the person W, and (6) shows the state of the first pull. The state of % movement, (6) shows the longitudinal section of the second operating part which is flipped through the state of Fig. 13 " Pulling the second operating part upwards to the skin of the 14th _ _ component of the competition The non-intersecting member is fastened to the rotation position ί. 24 323046 201213173 • Fig. 15 is a longitudinal sectional view showing the state in which the second operating member in Fig. 13 is completely up. Fig. 16 is a longitudinal sectional view showing a state in which the seat body shown in Fig. 15 is rotated by 180 degrees. Fig. 17 is a longitudinal sectional view showing a state in which the second operating member shown in Fig. 16 is returned to the middle. Fig. 18 is a longitudinal sectional view showing a state in which the state in which the backrest portion is tilted back is only halfway up the second operating member. Fig. 19 is a longitudinal sectional view showing a state in which the second operating member in Fig. 18 is completely pulled up. [Description of main components] 11 Car child seat 13 Seat body 15 Seat 17 Backrest 18 Backrest shaft 19 Seat base 21 Side walls 22a, 22b, 22c 孑L 23 First guide groove 24 Second guide groove 25 Third guide groove 30 Common operation portion 31 First operation member 32 Second operation member 33 First shaft 34 Second shaft 35 Operation base 35c Recess 36 Projection 37 Angle lock release member 38 Magazine 39 Guide hole 41 Intermediate joint member 42 Protrusion 43 Inner protrusion 44 Extension 25 323046 201213173 44h Long hole 49 Pin 51 Rotational position fixing member 52 Rotation shaft 53 Rotation preventing protrusions 54, 55 Connection groove 71 Connection shaft 81 Base member 83 Recessed portion 85 Detaining hole 86 Upright portion 87 Locking device 323046