201242855 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種瓶。 本申請案基於2010年10月27曰於日本申吐+ q丄* 不甲印之日本專利特 願2010-240945號、及2010年11月26日於日本申請之日本 專利特願2010-264169號主張優先權，並將其内^引用於 此0 【先前技術】 自先刚以來，作為由合成樹脂材料形成為有底筒狀之 瓶，已知有如下之構成：例如，如下述專利文獻丨所示， 底部之底壁部包括：位於外周緣部之接地部、自瓶徑方向 之内側連接於上述接地部並朝向上方延伸之暨立周壁部、 自上述豎立周壁部之上端部朝向瓶徑方向之内側突出之可 動壁部、及自上述可動壁部之瓶徑方向之内端部朝向上方 延伸之凹陷周壁部’可動壁部以與豎立周壁部之連接部分 為中心進行轉動，以使凹陷周壁部朝向上方移動，藉此吸 收瓶内之減壓。 [先前技術文獻] [專利文獻] [專利文獻1]曰本專利特開2010-126184號公報 【發明内容】 [發明所欲解決之問題] 然而，於上述先前之瓶中，對於使瓶内之減壓吸收性能 提高有改善之餘地。 159698.doc 201242855 因此，本發明係考慮此種情況而完成者，其目的在於提 供一種可使瓶内之減壓吸收性能提高之瓶。 [解決問題之技術手段] 為了達成上述目的，本發明提供以下之方法。 (1)本發明之貫施形態之瓶係由合成樹脂材料形成為有 底筒狀者，且底部之底壁部包括：位於外周緣部之接地 部、自瓶徑方向之内側連接於上述接地部並朝向上方延伸 之g立周壁部、自上述豎立周壁部之上端部朝向瓶徑方向 之内側突出之環狀之可動壁部、及自上述可動壁部之瓶徑 方向之内端部朝向上方延伸之凹陷周壁部；上述可動壁部 以與上述豎立周壁部之連接部分為中心轉動自如地配設， :使上述凹陷周壁部朝向上方移動；上述豎立周壁部以隨 著自上述接地部朝向與上述可動壁部之上述連接部分而逐 漸朝向瓶徑方向之内側傾斜之方式延伸，並且其傾斜角产 相對於瓶轴成0。以上且未達2〇。之角L·自上述接地部： 上述丑立周壁部與上述可動壁部之上述連接部分之高度^ 定為3.5 mm以上且75mm以下。 又0又 根據本發明之實施形態之瓶，於瓶内之減麼時，藉由可 :壁：之轉動使凹陷周壁部向上方移動，藉此可吸收減 而’認為可動壁部由於豎立周壁部之上端部向瓶徑 連二多動所造成之擴徑，是由於以與f立周壁部之 連接。P刀為令心進行轉動所引起。 之 :處’於本發明之實施形態之瓶中，豐立周壁部隨著朝 °/、可動壁之連接部分而相對於瓶軸於上述傾斜角度 159698.doc 201242855 範圍内向瓶徑方向之内側傾斜，並且自接地部至上述連接 部分之高度設定於上述高度範圍内。故而，認為登立周壁 部其與可動壁部之連接部分即上端部會以接地部為基點變 得易於沿瓶徑方向靈活地移動，藉此上述上端部於上述減 壓時變得易於向瓶徑方向之外側移動。 / 從而’可使可動壁部一面感度良好地追隨瓶内之内壓變 化一面靈活地轉動，可使減壓吸收性能提高。 再者，於豎立周壁部之傾斜角度為2〇。以上，且自接地 部至豎立周壁部與可動壁部之連接部分為止之高度未達 3.5 mm之情形時，認為豎立周壁部之上端部變得難以沿瓶 徑方向移動，相反地位於豐立周壁部之下端部側之接地部 變得易於沿瓶徑方向移動。故而，於上述減壓時，較豎立 周壁部之上端部而言接地部變得更易於向瓶徑方向之外側 移動，從而有阻礙可動壁部之轉動之移動之虞。 (2)於上述本發明之實施形態之瓶中，上述可動壁部隨 者自與上述賢立周壁部之上述連接部分朝向瓶徑方向之内 側而逐漸朝向下方延伸，並且上述可動壁部與上述豎立周 壁部所成之角度設定為60。以上且85。以下。 於該情形時’可動壁部與暨立周壁部所成之角度設定於 上述範圍内，故而可使上述之作用效果，即’使可動壁部 -面感度良好地追隨瓶内之内壓變化一面靈活地轉動而使 減G及收丨生k尚之點顯著地奏效。又，可動壁部隨著自 與丑立周壁部之連接部分朝向瓶徑方向之内㈣而逐漸朝向 下方延伸，故而於内容物之填充時易於使上述可動壁部朝 159698.doc 201242855 向下方轉動。因此，可使瓶内之容積增大而提高剛填充後 之減壓吸收容量，藉此易於使減壓吸收性能進而提高。 (3) 於上述本發明之實施形態之瓶令，上述可動壁部隨 著自連接於上述豎立周壁部之外端部朝向連接於上述凹陷 周壁部之内端部而逐漸朝向下方延伸，並且自上述接地部 至上述可動壁部之上述内端部之高度設定為自上述接地部 至上述可動壁部之上述外端部之高度之45%以下。 根據本發明之實施形態之瓶，於瓶内之減壓時，藉由可 動壁部之轉動凹陷周壁部向上方移動藉此可吸收減壓。尤 其，可動壁部隨著自外端部朝向内端部而逐漸向下方延 伸，並且自接地部至内端部為止之高度設定為自接地部至 外端部為止之高度之45%以下，而大大地確保外端部與内 端部之高低差，故而於内容物之填充時易於使上述可動壁 部朝向下方轉動。因此，可使瓶内之容積增大而提高剛填 充後之減壓吸收容量，藉此可使減壓吸收性能提高。 (4) 於上述本發明之實施形態之瓶中’上述可動壁部之 上述内端部距離上述接地部之高度亦可設定為2 mm以上。 於該情形時，當隨著内容物之填充而可動壁部向下方轉 動時，内端部不易向較接地部更下方飛出，從而易於避免 朝向接地面之接觸。因此，例如即便於高溫填充之情形 時’亦可一面抑制可動壁部之内端部之上述飛出一面球實 地進行填充作業。 [發明之效果] 根據本發明之貫施形態之瓶，可使瓶内之減壓吸收性能 159698.doc 201242855 提局。 【實施方式】 以下，參照圖式，對本發明之第一實施形態之瓶進行說 明。 如圖1至圖4所示，本實施形態之瓶丨包括口部丨丨、肩部 12、主體部13及底部14，該等形成為以使各者之中心軸線 位於共埽轴上之狀態依序連設之概略構成。 以下，將上述共通軸稱作瓶軸〇，沿瓶軸〇方向將口部 11側稱作上側，將底部丨4側稱作下側。又，將正交於瓶軸 Ο之方向稱作瓶徑方向，將以瓶軸〇為中心而環繞之方向 稱作瓶周方向。 再者，瓶1係對藉由射出成形而形成為有底筒狀之預成 型坯進行吹塑成形而形成，且係由合成樹脂材料而一體地 形成。又，於口部1丨上，螺固有未圖示之蓋。進而，口部 11、肩部12、主體部13及底部14係各自正交於瓶軸〇之橫 剖面視形狀形成為圓形狀。 於肩部12與主體部13之間，遍及全周而連續地形成有第 1環狀凹槽15。 主體部13形成為筒狀，並且較肩部12之下端部及底部14 之下述跟部17更小徑地形成◦又，於該主體部13上，沿瓶 轴0方向隔開間隔地形成有複數個第2環狀凹槽16。於圖示 之例中’沿瓶軸〇方向隔開相等間隔地形成有4個第2環狀 凹槽16。該等各第2環狀凹槽16形成為遍及主體部π之全 周而連續地形成之溝槽部。 )5969S.doc 201242855 底部14包括上端開口部連接於主體部13之下端開口部之 跟部17、及閉合跟部17之下端開口部且外周緣部形成為接 地部18之底壁部19，並形成為杯狀。 跟部1 7中’自瓶徑方向之外側連接於上述接地部丨8之跟 下端部27較自上方連接於上述跟下端部27之上跟部28更小 徑地形成。 再者’該上跟部28形成為肩部12之下端部並且形成為航 1之最大外徑部。 又，跟下端部27與上跟部28之連結部分29隨著自上方朝 向下方而逐漸縮徑，藉此跟下端部27形成為較上跟部28更 小徑。又，於上跟部28上，遍及全周而連續地形成有與上 述第2環狀凹槽16為大致相同之深度之第3環狀凹槽2〇。 如圖3所示，底壁部丨9包括自瓶徑方向之内側連接於接 地部18並朝向上方延伸之豎立周壁部门、自豎立周壁部门 之上端部朝向瓶徑方向之内側突出之環狀之可動壁部2 2、 及自可動壁部22之瓶徑方向之内端部朝向上方延伸之凹陷 周壁部23。 可動壁部22形成為朝向下方凸起之曲面狀，並且隨著自 瓶徑方向之外側朝向内側而逐漸朝向下方延伸。該可動壁 22及豎立周壁部21介由朝向上方凸起之曲面部25而連 、°而且，可動壁部22形成為以上述曲面部（與豎立周壁 Ρ之連接部分）25為中心自由轉動，以使凹陷周壁部23 朝向上方移動。 再者，豎立周壁部21之上端與配設於較該豎立周壁部21 159698.doc 201242855 之上端更上方之頂壁24之外緣之間所形成之環狀之底面部 (可動壁部22及凹陷周壁部23)遍及全周地向下鼓出，縱半 剖面視時形成為大致U字狀（大致V字狀或大致L字狀）。 聲:立周壁部21隨著自下方朝向上方而逐漸縮徑。具體而 5 ’以隨著自接地部18朝向與可動壁部22之連接部分即上 述曲面部25而逐漸朝向瓶徑方向之内側傾斜之方式延伸， 並且其傾斜角度Θ1相對於瓶轴〇，設定於〇。以上且未達2〇。 之角度範圍内例如10。。 又’於本實施形態中，自接地部1 8至上述曲面部25為止 之尚度TsS：疋於3·5 mm以上且7.5 mm以下之高度範圍内例 如5 mm ^進而，上述可動壁部22與豎立周壁部21所成之角 度Θ2設定於60。以上且85。以下之角度範圍内例如73〇。 又，如圖2及圖4所示，於上述可動壁部22上，以瓶軸〇 為中〜放射狀地配設有複數根肋4〇。即，各肋4〇係沿瓶周 方向而相等間隔地配設。 再者於圖示之例中，肋40係藉由朝向上方凹陷成曲面 狀之複數個凹部40a沿瓶徑方向斷續且直線狀地延伸而構 成。藉此，肋40係沿著瓶徑方向之縱剖面視形狀形成為波 形狀。 各凹。卩40a刀別幵》成為相同形狀相同大小並且沿瓶徑 方向而相等間隔地配置。而且，於複數根肋40之各者上， 配設有複數個凹部4 〇 a之沿著瓶徑方向之各位置相同。 再者，於各肋40上，複數個凹部4〇a中，位於瓶徑方向 最外側之凹。卩40a自瓶彳望方向之内側接近於曲面部25， 159698.doc 201242855 位於瓶徑方向之最内側之凹部4〇3自瓶徑方向之外側接近 於凹陷周壁部23。 如圖3所示，凹陷周壁部23與瓶軸〇同軸地配設，並且形 成為隨著自上方朝向下方而逐漸擴徑之橫剖面視圓形狀。 於凹陷周壁部23之上端部上，連接有與瓶轴〇同軸地配置 之圓板狀之頂壁24,由凹陷周壁部23及頂壁24之整體形成 有頂筒狀。 該凹陷周㈣23包括形成為朝向瓶徑方向之内側凸起之 曲面狀且上端部連設於頂壁24之外周緣部之彎曲壁部 23a。該彎曲壁部23a介由其下端部朝向下方凸起之曲面部 26而連設於可動壁部22之瓶徑方向之内端部。 可動壁部22以底壁 藉此可動壁部22以 若以上述方式構成之瓶1内減壓，則 部19之曲面部25為中心朝向上方轉動， 式移動。即，藉由減壓 可吸收瓶1之内壓變化 將凹陷周壁部23朝向上方頂起之方 時使瓶1之底壁部19積極地變形， (減壓）。 但是’認為於上述減壓時，可動壁部22會以賢立周壁部 21之上端部向瓶徑方向之外側移動㈣機1與豎立周壁 部21之連接部分之曲面部25為中心、進行轉動。 此處’於本實施形態之瓶1中1立周壁部21隨著朝向 曲面部25而相對於瓶軸㈣上述傾斜角度㈣瓶徑方向之 ^側=，並且自接地部18至曲面心為止之高度設為上 述面度了，進而豎立周壁部21與可動壁部 為上述角度Θ2。 乂<月從。又 159698.doc 201242855 由此’認為豎立周壁部21其與可動壁部22之連接部分之 上端部會以接地部18為基點變得易於沿瓶徑方向靈活地移 動’藉此上端部於上述減壓時變得易於向瓶徑方向之外側 移動。從而，可使可動壁部22—面感度良好地追隨瓶1内 之内壓變化一面靈活地轉動，而可使減壓吸收性能提高。 又’可動壁部22隨著自與豎立周壁部21之連接部分即曲 面部2 5朝向瓶徑方向之内側而逐漸朝向下方延伸，故而於 内容物之填充時易於使上述可動壁部22朝向下方轉動。因 此叮使瓶1内之谷積增大而提高剛填充後之減壓吸收容 量’藉此’易於使減壓吸收性能進而提高。 再者，於底壁部19之可動壁部22上形成有複數根肋40， 故而可使可動壁部22之表面積增加而增加受壓面積，可使 可動壁部22迅速地對應瓶^之内壓變化而變形。 又’本實施形態之瓶1較佳為内容量為1公升以下且接地 徑設定為8 5 mm以下之瓶。 再者’本發明之技術範圍並不限定於上述實施形態，可 於不脫離本發明之主旨之範圍内，添加各種變更。 例如，於上述實施形態中使肋4〇以放射狀斷續地延伸， 但並不限於此，既可使其連續地延伸，亦可使其彎曲地延 伸。又，凹部4〇a之形狀或大小可進行適當設計變更。再 者’該等肋40並非必需即便不設置亦可。 又，如圖5及圖6所示，即便於豎立周壁部21上遍及全周 地形成凹凸部41亦可。再者，該凹凸部41係藉由形成為朝 向瓶徑方向之内側凸起之曲面狀之凸部41a沿瓶周方向隔 159698.doc -12·201242855 VI. Description of the Invention: [Technical Field to Which the Invention Is Ascribed] The present invention relates to a bottle. This application is based on the Japanese Patent Application No. 2010-240945, which was filed on October 27, 2010 in Japan, and the Japanese Patent Application No. 2010-240, 194, which was filed in Japan on November 26, 2010. In the case of a bottle formed of a synthetic resin material as a bottomed cylinder, a composition is known as follows: For example, the following patent document 丨As shown in the figure, the bottom wall portion of the bottom portion includes: a land portion located at an outer peripheral edge portion, a giling peripheral wall portion extending from the inner side of the bottle diameter direction and extending upwardly from the ground portion, and an upper end portion of the vertical standing wall portion facing the bottle diameter The movable wall portion that protrudes inward in the direction and the recessed peripheral wall portion that extends upward from the inner end portion of the movable wall portion in the bottle diameter direction are rotated around the connecting portion with the standing peripheral wall portion to make the recess The peripheral wall portion moves upward, thereby absorbing the reduced pressure in the bottle. [Prior Art Document] [Patent Document 1] [Patent Document 1] JP-A-2010-126184 SUMMARY OF INVENTION [Problems to be Solved by the Invention] However, in the above-mentioned prior bottle, for making a bottle There is room for improvement in the improvement of the vacuum absorption performance. 159698.doc 201242855 Accordingly, the present invention has been made in view of such circumstances, and an object thereof is to provide a bottle which can improve the reduced pressure absorption performance in a bottle. [Technical means for solving the problem] In order to achieve the above object, the present invention provides the following method. (1) The bottle of the present invention is formed of a synthetic resin material into a bottomed cylindrical shape, and the bottom wall portion of the bottom portion includes: a ground portion at the outer peripheral edge portion and an inner side of the bottle diameter direction connected to the ground a g-shaped peripheral wall portion extending upward, an annular movable wall portion protruding from an upper end portion of the vertical peripheral wall portion toward an inner side in a bottle diameter direction, and an inner end portion in a bottle diameter direction from the movable wall portion facing upward a recessed peripheral wall portion extending; the movable wall portion is rotatably disposed about a connection portion with the vertical peripheral wall portion; the recessed peripheral wall portion is moved upward; and the vertical peripheral wall portion is oriented toward the ground portion The connecting portion of the movable wall portion is gradually extended toward the inner side in the bottle diameter direction, and the inclination angle thereof is made zero with respect to the bottle axis. Above and less than 2〇. The angle L: from the ground portion: The height of the connection portion between the quaint circumferential wall portion and the movable wall portion is set to be 3.5 mm or more and 75 mm or less. Further, according to the bottle according to the embodiment of the present invention, when the bottle is reduced, the concave peripheral wall portion is moved upward by the rotation of the wall: thereby, the absorption can be absorbed and the movable wall portion is considered to be erected by the peripheral wall. The diameter expansion caused by the upper end of the section to the bottle diameter is due to the connection with the wall portion of the f. The P knife is caused by the rotation of the heart. In the bottle according to the embodiment of the present invention, the wall portion of the Fengli circumference is inclined toward the inner side of the bottle diameter direction with respect to the bottle axis at the inclination angle 159698.doc 201242855 with the connection portion toward the °/movable wall. And the height from the ground portion to the connecting portion is set within the above height range. Therefore, it is considered that the upper end portion, which is the connection portion between the wall portion and the movable wall portion, is easily moved in the bottle diameter direction based on the ground portion, whereby the upper end portion becomes easy to the bottle diameter at the time of the decompression. Move outside the direction. In this way, the movable wall portion can be flexibly rotated while following the change in the internal pressure in the bottle with a good sensitivity, and the reduced pressure absorption performance can be improved. Furthermore, the inclination angle of the erected peripheral wall portion is 2 〇. In the case where the height from the ground portion to the connection portion between the vertical wall portion and the movable wall portion is less than 3.5 mm, it is considered that the upper end portion of the upright peripheral wall portion becomes difficult to move in the bottle diameter direction, and conversely, it is located at the wall of the Fengli wall. The land portion on the lower end side of the portion becomes easy to move in the bottle diameter direction. Therefore, at the time of the above-described decompression, the land portion is more likely to move toward the outer side in the bottle diameter direction than the upper end portion of the upright peripheral wall portion, and there is a possibility that the movement of the movable wall portion is hindered. (2) In the bottle according to the embodiment of the present invention, the movable wall portion gradually extends downward from the connection portion with the sinuous peripheral wall portion toward the inner side in the bottle diameter direction, and the movable wall portion and the movable wall portion The angle formed by the vertical wall portion is set to 60. Above and 85. the following. In this case, the angle formed by the movable wall portion and the wall portion of the fulcrum is set within the above range, so that the above-described effect, that is, the movable wall portion-surface sensitivity can be closely followed by the internal pressure change in the bottle. Flexibly turning to make the point of reducing G and receiving the mark k have a significant effect. Further, since the movable wall portion gradually extends downward from the connection portion with the ugly vertical wall portion toward the inside of the bottle diameter direction (four), it is easy to rotate the movable wall portion downward toward 159698.doc 201242855 when the contents are filled. . Therefore, the volume inside the bottle can be increased to increase the reduced pressure absorption capacity immediately after the filling, whereby the reduced pressure absorption performance can be easily improved. (3) In the bottle according to the embodiment of the present invention, the movable wall portion gradually extends downward toward the inner end portion connected to the recessed peripheral wall portion from an end portion connected to the vertical peripheral wall portion, and The height of the ground portion to the inner end portion of the movable wall portion is set to be 45% or less of the height from the ground portion to the outer end portion of the movable wall portion. According to the bottle of the embodiment of the present invention, when the bottle is decompressed in the bottle, the peripheral wall portion is moved upward by the rotation of the movable wall portion, whereby the pressure reduction can be absorbed. In particular, the movable wall portion gradually extends downward from the outer end portion toward the inner end portion, and the height from the ground portion to the inner end portion is set to be 45% or less of the height from the ground portion to the outer end portion, and Since the height difference between the outer end portion and the inner end portion is largely ensured, it is easy to rotate the movable wall portion downward when the contents are filled. Therefore, the volume inside the bottle can be increased to increase the reduced pressure absorption capacity immediately after the filling, whereby the reduced pressure absorption performance can be improved. (4) In the bottle according to the embodiment of the present invention, the height of the inner end portion of the movable wall portion from the ground portion may be set to 2 mm or more. In this case, when the movable wall portion is rotated downward as the contents are filled, the inner end portion is less likely to fly downward than the ground portion, so that it is easy to avoid contact with the ground contact surface. Therefore, for example, even in the case of high-temperature filling, it is possible to perform the filling operation while suppressing the flying out of the inner end portion of the movable wall portion. [Effects of the Invention] According to the bottle of the present invention, the vacuum absorption performance in the bottle can be improved by 159698.doc 201242855. [Embodiment] Hereinafter, a bottle according to a first embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 4, the bottle holder of the present embodiment includes a mouth portion, a shoulder portion 12, a main body portion 13, and a bottom portion 14, which are formed such that the central axes of the respective members are located on the common yoke axis. A summary of the sequential construction. Hereinafter, the common axis is referred to as a bottle shaft, and the side of the mouth portion 11 is referred to as an upper side in the direction of the axis of the bottle, and the side of the bottom portion 4 is referred to as a lower side. Further, the direction orthogonal to the axis of the bottle is referred to as the direction of the bottle diameter, and the direction around the axis of the bottle is referred to as the circumferential direction of the bottle. Further, the bottle 1 is formed by blow molding a preform having a bottomed cylindrical shape by injection molding, and is integrally formed of a synthetic resin material. Further, on the mouth 1 ,, a cover (not shown) is inherently provided. Further, the mouth portion 11, the shoulder portion 12, the main body portion 13, and the bottom portion 14 are each formed in a circular shape in a cross-sectional shape orthogonal to the bottle axis. A first annular groove 15 is continuously formed between the shoulder portion 12 and the main body portion 13 over the entire circumference. The main body portion 13 is formed in a tubular shape, and is formed to be smaller than the lower end portion of the shoulder portion 12 and the following heel portion 17 of the bottom portion 14, and is formed on the main body portion 13 at intervals in the direction of the bottle axis 0. There are a plurality of second annular grooves 16. In the illustrated example, four second annular grooves 16 are formed at equal intervals in the direction of the axis of the bottle. Each of the second annular grooves 16 is formed as a groove portion continuously formed over the entire circumference of the main body portion π. 5969S.doc 201242855 The bottom portion 14 includes a heel portion 17 whose upper end opening is connected to the lower end opening portion of the main body portion 13, and a lower end opening portion of the closing heel portion 17, and the outer peripheral edge portion is formed as the bottom wall portion 19 of the ground portion 18, and Formed into a cup shape. The lower end portion 27 of the heel portion 7 which is connected to the outer side of the ground portion 丨8 from the outer side of the bottle is formed to be smaller than the heel portion 28 of the lower end portion 27 from the upper side. Further, the upper heel portion 28 is formed as the lower end portion of the shoulder portion 12 and formed as the largest outer diameter portion of the navigator 1. Further, the connecting portion 29 between the lower end portion 27 and the upper heel portion 28 is gradually reduced in diameter from the upper side toward the lower side, whereby the lower end portion 27 is formed to have a smaller diameter than the upper heel portion 28. Further, on the upper heel portion 28, a third annular groove 2A having a depth substantially the same as that of the second annular groove 16 is continuously formed over the entire circumference. As shown in FIG. 3, the bottom wall portion 9 includes an upright peripheral wall portion that is connected to the ground portion 18 from the inner side in the bottle diameter direction and extends upward, and an annular portion that protrudes toward the inner side of the bottle diameter direction from the upper end portion of the standing peripheral wall portion. The movable wall portion 2 2 and the recessed peripheral wall portion 23 extending upward from the inner end portion of the movable wall portion 22 in the bottle diameter direction. The movable wall portion 22 is formed in a curved shape that is convex downward, and gradually extends downward toward the inner side in the direction from the outer diameter of the bottle. The movable wall 22 and the upright peripheral wall portion 21 are connected to each other via a curved surface portion 25 that is convex upward, and the movable wall portion 22 is formed to be rotatable about the curved surface portion (the portion to which the vertical circumferential wall is connected) 25. The concave peripheral wall portion 23 is moved upward. Further, an upper end portion of the upper peripheral wall portion 21 and an outer bottom portion of the top wall 24 disposed above the upper end of the vertical peripheral wall portion 21 159698.doc 201242855 (the movable wall portion 22 and The recessed peripheral wall portion 23) is bulged downward throughout the entire circumference, and the longitudinal half section is formed in a substantially U-shape (a substantially V-shape or a substantially L-shape). Sound: The standing wall portion 21 gradually decreases in diameter as it goes upward from the bottom. Specifically, 5' is extended so as to gradually incline toward the inner side in the bottle diameter direction from the curved portion 25 which is the connection portion with the movable wall portion 22 from the land portion 18, and the inclination angle Θ1 is set with respect to the bottle axis 〇 Yu Yu. Above and less than 2〇. Within the range of angles, for example, 10. . Further, in the present embodiment, the scent TsS from the ground portion 18 to the curved surface portion 25 is within a height range of 3·5 mm or more and 7.5 mm or less, for example, 5 mm. Further, the movable wall portion 22 is further provided. The angle Θ2 formed with the standing peripheral wall portion 21 is set at 60. Above and 85. The following angle range is, for example, 73〇. Further, as shown in Figs. 2 and 4, a plurality of ribs 4 are disposed on the movable wall portion 22 in a medium-to-radial manner. That is, each of the ribs 4 is disposed at equal intervals in the circumferential direction of the bottle. Further, in the illustrated example, the rib 40 is formed by intermittently and linearly extending a plurality of concave portions 40a recessed in a curved shape in the bottle diameter direction. Thereby, the rib 40 is formed in a wave shape in a longitudinal cross-sectional shape along the bottle diameter direction. Each concave. The 卩40a knife 幵 成为 is configured to have the same shape and the same size and are equally spaced along the bottle diameter direction. Further, each of the plurality of ribs 40 is provided with a plurality of recesses 4 〇 a which are identical in position along the bottle diameter direction. Further, in each of the ribs 40, a plurality of recesses 4a are recessed at the outermost side in the bottle diameter direction. The 卩40a is close to the curved surface portion 25 from the inside of the bottle looking direction, and 159698.doc 201242855 The innermost concave portion 4〇3 located in the bottle diameter direction is close to the concave peripheral wall portion 23 from the outer side in the bottle diameter direction. As shown in Fig. 3, the recessed peripheral wall portion 23 is disposed coaxially with the bottle shaft, and has a circular cross-sectional shape that gradually increases in diameter as it goes downward from above. A disk-shaped top wall 24 disposed coaxially with the bottle shaft is connected to the upper end portion of the recessed peripheral wall portion 23, and the recessed peripheral wall portion 23 and the top wall 24 are integrally formed with a top cylindrical shape. The recessed circumference (four) 23 includes a curved wall portion 23a formed in a curved shape that is convex toward the inner side in the bottle diameter direction and whose upper end portion is connected to the outer peripheral edge portion of the top wall 24. The curved wall portion 23a is connected to the inner end portion of the movable wall portion 22 in the bottle diameter direction via the curved surface portion 26 whose lower end portion is convex downward. The movable wall portion 22 is moved by the bottom wall, whereby the movable wall portion 22 is decompressed in the bottle 1 configured as described above, and the curved portion 25 of the portion 19 is rotated upward as a center. In other words, the bottom wall portion 19 of the bottle 1 is positively deformed (depressurized) when the recessed peripheral wall portion 23 is pushed upward by the pressure change in the pressure-reducible bottle 1 . However, it is considered that the movable wall portion 22 is moved around the curved portion 25 of the joint portion between the machine 1 and the vertical wall portion 21 by moving the end portion of the upper wall portion 21 toward the outer side in the bottle diameter direction. . Here, in the bottle 1 of the present embodiment, the one vertical wall portion 21 is inclined toward the curved surface portion 25 with respect to the bottle axis (four), the inclination angle (four) of the bottle diameter direction, and from the ground portion 18 to the curved surface. The height is set to the above-described degree, and the erected peripheral wall portion 21 and the movable wall portion are at the above-described angle Θ2.乂<month from. Further, 159698.doc 201242855 Thus, it is considered that the upper end portion of the connecting portion of the upright peripheral wall portion 21 and the movable wall portion 22 is made to be easily moved in the bottle diameter direction based on the land portion 18, whereby the upper end portion is reduced in the above-mentioned manner. It becomes easy to move to the outer side of the bottle diameter direction at the time of pressing. Therefore, the movable wall portion 22 can be flexibly rotated while following the change in the internal pressure in the bottle 1 with good surface feel, and the reduced pressure absorption performance can be improved. Further, the movable wall portion 22 gradually extends downward toward the inner side in the bottle diameter direction from the curved portion 25 which is a connection portion with the standing peripheral wall portion 21, so that the movable wall portion 22 is easily faced downward when the contents are filled. Turn. Therefore, the volume of the inside of the bottle 1 is increased to increase the capacity of the reduced pressure absorption immediately after the filling, whereby the reduced pressure absorption performance is further improved. Further, a plurality of ribs 40 are formed on the movable wall portion 22 of the bottom wall portion 19, so that the surface area of the movable wall portion 22 can be increased to increase the pressure receiving area, and the movable wall portion 22 can be quickly corresponding to the inside of the bottle. The pressure changes and deforms. Further, the bottle 1 of the present embodiment is preferably a bottle having a content of 1 liter or less and a grounding diameter of 8 5 mm or less. Further, the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be added without departing from the spirit and scope of the invention. For example, in the above embodiment, the ribs 4 are radially extended intermittently. However, the present invention is not limited thereto, and may be continuously extended or curved. Further, the shape or size of the recessed portion 4A can be appropriately changed. Furthermore, the ribs 40 are not necessarily provided even if they are not provided. Further, as shown in Fig. 5 and Fig. 6, the uneven portion 41 may be formed over the entire circumference of the standing peripheral wall portion 21. Further, the uneven portion 41 is separated by a curved convex portion 41a formed in a direction toward the inner side of the bottle diameter direction in the circumferential direction of the bottle 159698.doc -12·
S 201242855 開間隔地配設複數個而構成。 如上所述，藉由形成凹凸部41，例如入射至豎立周壁部 21之光藉由凹凸部41而漫反射、或瓶1内之内容物亦充滿 於凹凸部41内等，藉此於觀察填充有内容物之瓶1之底部 14時不易感到不諧調感。 又’於上述實施形態中，雖構成為使豎立周壁部21與可 動壁部22所成之角度Θ2控制在60。以上且85。以下之角度範 圍内，但並不限定於該角度範圍◎例如可適當變更為使可 動壁部22沿瓶徑方向平行地突出、或使其向上方傾斜等， 亦可適當變更成形成為平面狀或朝向,上方凹陷之凹曲面狀 等。 惟如上述實施形態所述，較佳為將豎立周壁部21與可動 壁部22所成之角度θ2設定於60〇以上且85〇以下之角度範圍 内，並使可動壁部22朝向下方傾斜。藉由如此設置，可提 咼可動壁部22之轉動性，從而易於使減壓吸收性能提高。 又，於上述實施形態中將豎立周壁部21與可動壁部22 介由曲面部25而連接，但亦可於該連接部分仿照可動壁部 22之表面形狀而形成相對於向瓶徑方向之外側延長之假想 線於上方凹陷之環狀凹部’並以上述環狀凹部為中心自； 轉動地構成可動壁部22。於該情料，使可動壁部22之徑 方向外端部具有靈活性從而可期待較高之鉸接效果，故而 可使可動壁部22-面進而感度良好地追隨瓶i内之内壓變 化面靈活地义形，從而可使瓶i内之減壓吸收性能進而 159698.doc -13- 201242855 而且’即便於形成有該環狀凹槽之情形時，亦較佳為將 豎立周壁部21與可動壁部22所成之角度、更詳細而言為賢 立周壁部21與上述假想線所成之角度Θ2設定於60。以上且 85°以下之角度範圍内。 又’於上述實施形態中，將肩部12、主體部13及底部14 之各自之正交於之瓶軸〇之橫剖面視形狀設定為圓形狀， 但並不限於此’例如亦可適當變更為多角形狀等。 又，形成瓶1之合成樹脂材料亦可適當變更為例如：聚 對苯二曱酸乙二醇酯、或聚萘二曱酸乙二醇酯、非晶性聚 西曰專、或者該等之混合材料等《進而，瓶1並不限於單片 構造體亦可形成具有中間層之積層構造體。再者，作為中 間層例如可列舉：包含具有氣體阻隔性之樹脂材料之層、 包含再生材料之層、或包含具有吸氧性之樹脂材料之層 等。 (實施例） 其次，對使豎立周壁部21之上述傾斜角度0丨 '及自接地 部18至曲面部25為止之上述高度丁分別變化，而試驗（分 析）減壓強度（kPa)與減壓吸收容量（ml)之關係如何變化之 實施例進行說明。 再者，本試驗係使用可動壁部22上形成有複數根肋扣之 圖1至圖4所示之瓶1而進行試驗。 於本試驗中，藉由上述傾斜角度01為5。且將上述高度τ 設定為3.5 mm之第】樣態、上述傾斜角度01為1〇。且將^上"述 高度T設定為3.5 mm之第2樣態、上述傾斜角度…為^。且 159698.docS 201242855 It is composed of a plurality of intervals. As described above, by forming the uneven portion 41, for example, light incident on the vertical peripheral wall portion 21 is diffused and reflected by the uneven portion 41, or the contents of the bottle 1 are also filled in the uneven portion 41, thereby observing the filling. When there is a bottom 14 of the contents of the bottle 1, it is not easy to feel uncomfortable. Further, in the above embodiment, the angle Θ2 formed by the upright peripheral wall portion 21 and the movable wall portion 22 is controlled to 60. Above and 85. In the following range of angles, the angle range is not limited thereto. For example, the movable wall portion 22 may be appropriately bent in the bottle diameter direction or may be inclined upward, and may be appropriately changed into a flat shape or The direction is concave, the concave shape of the upper surface, and the like. In the above-described embodiment, it is preferable that the angle θ2 formed by the upright peripheral wall portion 21 and the movable wall portion 22 is set within an angle range of 60 〇 or more and 85 〇 or less, and the movable wall portion 22 is inclined downward. With this arrangement, the rotatability of the movable wall portion 22 can be improved, so that the reduced pressure absorption performance can be easily improved. Further, in the above-described embodiment, the standing peripheral wall portion 21 and the movable wall portion 22 are connected via the curved surface portion 25. However, the connecting portion may be formed on the outer side of the bottle diameter direction in accordance with the surface shape of the movable wall portion 22. The extended imaginary line is an annular recessed portion that is recessed upward and is centered on the annular recessed portion; the movable wall portion 22 is formed to rotate. In this case, the outer end portion of the movable wall portion 22 in the radial direction is made flexible, and a high hinge effect can be expected. Therefore, the movable wall portion 22-surface can be more sensitively followed by the internal pressure change surface in the bottle i. The flexible shape can be used to make the vacuum absorption performance in the bottle i further 159698.doc -13- 201242855 and it is preferable to erect the peripheral wall portion 21 and the movable body even when the annular groove is formed. The angle formed by the wall portion 22, more specifically, the angle Θ2 formed by the sinusoidal wall portion 21 and the imaginary line is set at 60. Above and within the angle range of 85° or less. Further, in the above-described embodiment, the cross-sectional shape of the shoulder portion 12, the main body portion 13, and the bottom portion 14 orthogonal to the bottle axis is set to a circular shape. However, the present invention is not limited thereto. It is a polygonal shape and the like. Further, the synthetic resin material forming the bottle 1 can be appropriately changed to, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous polycene, or the like. Mixed material, etc. Further, the bottle 1 is not limited to a single-piece structure, and a laminated structure having an intermediate layer may be formed. In addition, examples of the intermediate layer include a layer containing a resin material having gas barrier properties, a layer containing a regenerated material, or a layer containing a resin material having oxygen absorbing properties. (Embodiment) Next, the above-described inclination angle 0丨' of the standing peripheral wall portion 21 and the above-described height D from the ground portion 18 to the curved surface portion 25 are respectively changed, and the decompression strength (kPa) and the decompression are tested (analyzed). An example of how the relationship of the absorption capacity (ml) changes will be described. Further, this test was carried out by using the bottle 1 shown in Figs. 1 to 4 in which the plurality of rib fasteners were formed on the movable wall portion 22. In the present experiment, the above inclination angle 01 was 5 . Further, the height τ is set to a state of 3.5 mm, and the inclination angle 01 is 1 上述. And the second height of the height T is set to 3.5 mm, and the above inclination angle is ^. And 159698.doc
S -14· 201242855 將上述尚度T設定為3.5 mm之第3樣態、及上述傾斜角度01 為20且將上述高度τ設定為3·5 mm之比較樣態共計4個樣 態而分別進行試驗。 其結果’於使減壓強度開始增加之初期階段，4個樣態 之任種情形均可確§忍有減塵吸收容量增加。認為其原因 在於：藉由瓶1内之減壓底壁部19整體向上方移動。 然而，於其後減壓強度進而增加，達到大致l〇(kPa)之 時間點，對於上述第1至第3樣態確認有減壓吸收容量急遽 地增加。認為其原因在於：上述傾斜角度0 1為〇。以上且未 達2〇°之角度範圍内’並且上述高度T為3.5 mm以上且7.5 mm以下之高度範圍内’故而可動壁部22順暢地轉動並反 轉變形，藉此使凹陷周壁部23向上方移動。 與此相對地’於上述比較樣態之情形中，即便於進而提 高減壓強度之情形時，亦未發現有由於可動壁部22之反轉 變形而引起之減壓吸收容量之急遽之增加現象。 再者，於上述第1至第3樣態中’即便於將上述高度τ並 非設定為3 _5 mm而是5.0 mm ’且將上述傾斜角度01設定為 5°、1 〇°、1 5 °、20°之情形時’亦同樣地確認有於減壓強度 達到大致10(kPa)之時間點減壓吸收容量急遽地增加。 進而，即便於將上述高度T設定為7.5 mm，且將上述傾 斜角度Θ1設定為5。、1〇。、15。、20。之情形時，亦確認有同 樣之變化。又，即便於將上述傾斜角度Θ1設定為〇。之情形 時，亦發現有於上述高度範圍内減壓吸收容量之急遽之增 加現象。 159698.doc • 15- 201242855 然而，若將上述傾斜角度Θ1設定為未達〇。（負數），則會 產生難以成形之問題。 由以上情況可確認，藉由將豎立周壁部22之傾斜角度θι 。又疋於0以上且未達2〇。之角度範圍内，並將自接地部丄^ 至曲面部25為止之高度Τ設定於35 mm以上且75爪爪以下 之尚度範圍内，會使可動壁部22靈活地變形從而減壓吸收 性能提高。 以下，參照圖7〜圖9，對本發明之第二實施形態之瓶進 行說月。再者，於第二實施形態之說明中，對於與第一實 施形態相同之構成，使用與第一實施形態相同之參照序 號’並省略其說明。 如圖7所示，本實施形態之瓶10之底部140包括底部140 之上端開口部連接於主體部13之下端開口部之跟部17〇、 及閉合跟部170之下端開口部且外周緣部形成為接地部180 之底壁部190，並形成為杯狀。 跟部170中，自瓶徑方向之外側連接於上述接地部18〇之 跟下知部270較自上方連接於上述跟下端部27〇之上跟部 280更小徑地形成。 再者°玄上跟部280形成為主體部13之瓶軸〇方向之兩端 並且形成為瓶10之最大外徑部。 又跟下端部270與上跟部280之連結部分290隨著自上 方朝Θ 丁 〜卜方而逐漸縮徑’藉此跟下端部27〇形成為較上跟 4 280更小徑。又，於上跟部28〇上遍及全周而連續地形 成有與第3環狀凹槽2〇〇為大致相同之深度之第4環狀凹槽 159698.docS -14· 201242855 The third state in which the above-described temper T is set to 3.5 mm, and the comparison state in which the above-described inclination angle 01 is 20 and the height τ is set to 3·5 mm are respectively four patterns and are respectively performed. test. As a result, in any of the four stages of the initial stage in which the decompression intensity starts to increase, it is possible to surely endure the increase in the dust absorption capacity. The reason for this is considered to be that the entire bottom wall portion 19 of the decompression inside the bottle 1 is moved upward. However, after that, the pressure-reducing strength was further increased to reach a point of approximately 〇 (kPa), and it was confirmed that the pressure-reducing capacity was rapidly increased for the first to third modes described above. The reason is considered to be that the above-described inclination angle 0 1 is 〇. In the above-described range of the angle range of less than 2°° and the height T is in the range of 3.5 mm or more and 7.5 mm or less, the movable wall portion 22 smoothly rotates and reverses the deformation, thereby causing the recessed peripheral wall portion 23 to be upward. Party moves. On the other hand, in the case of the above-described comparative state, even in the case where the decompression strength is further increased, there is no sharp increase in the decompression absorption capacity due to the reverse deformation of the movable wall portion 22. . Further, in the above-described first to third aspects, 'the above-described inclination angle 01 is set to 5°, 1 〇°, 15°, even if the height τ is not set to 3 _5 mm but 5.0 mm'. In the case of 20°, it was confirmed that the pressure-reducing capacity increased sharply at the time point when the pressure-reduction intensity reached approximately 10 (kPa). Further, even if the height T is set to 7.5 mm, the tilt angle Θ1 is set to 5. 1〇. 15, 15. 20. In the case of the situation, it is also confirmed that there is the same change. Further, even if the inclination angle Θ1 is set to 〇. In the case of the above, it was also found that there was an increase in the rapid pressure absorption capacity in the above-mentioned height range. 159698.doc • 15- 201242855 However, if the above tilt angle Θ1 is set to less than 〇. (negative numbers) can cause problems that are difficult to form. From the above, it can be confirmed that the inclination angle θι of the standing peripheral wall portion 22 is set. Also 疋 0 or more and less than 2 〇. In the angular range, the height Τ from the ground portion 至 to the curved surface portion 25 is set within a range of 35 mm or more and 75 claws or less, and the movable wall portion 22 is flexibly deformed to reduce the pressure absorption performance. improve. Hereinafter, the bottle of the second embodiment of the present invention will be described with reference to Figs. 7 to 9 . In the description of the second embodiment, the same reference numerals are used for the same configurations as those of the first embodiment, and the description thereof will be omitted. As shown in FIG. 7, the bottom portion 140 of the bottle 10 of the present embodiment includes a heel portion 17 at which the upper end portion of the bottom portion 140 is connected to the opening portion of the lower end portion of the main body portion 13, and an opening portion at the lower end of the closed heel portion 170 and the outer peripheral portion. The bottom wall portion 190 of the ground portion 180 is formed in a cup shape. In the heel portion 170, the lower knuckle portion 270 connected to the ground portion 18 from the outer side in the bottle diameter direction is formed to be smaller than the heel portion 280 connected to the lower end portion 27 from above. Further, the upper heel portion 280 is formed at both ends of the body portion 13 in the direction of the bottle axis and is formed as the largest outer diameter portion of the bottle 10. Further, the connecting portion 290 of the lower end portion 270 and the upper heel portion 280 is gradually reduced in diameter from the upper side toward the side of the square portion, whereby the lower end portion 27 is formed to have a smaller diameter than the upper portion 4 280. Further, a fourth annular groove having a depth substantially the same as that of the third annular groove 2〇〇 is continuously formed on the upper heel portion 28 over the entire circumference 159698.doc
16 S 201242855 310。 如圖9所示，底壁部190包括自瓶捏方向之内侧連接於接 地部180並朝向上方延伸之豎立周壁部㈣、自豎立周壁部 210之上端部朝向瓶徑方向之内側突出之環狀之可動壁部 220、及自瓶徑方向之内側連接於可動壁部22()並朝向上方 延伸之凹陷周壁部230。 接地部180相對於接地面G以例如環狀進行線接觸。豐立 周壁部210隨著自下方朝向上方而逐漸縮徑。 可動壁部220形成為朝向下方凸起之曲面狀，並且隨著 自連接於登立周壁部210之外端部朝向連接於凹陷周壁部 230之内端部而逐漸朝向下方延伸。 再者，於本實施形態中，可動壁部22〇及豎立周壁部21〇 介由朝向上方凸起之曲面部25〇而連結，並且可動壁部22〇 及凹陷周壁部230介由朝向下方凸起之曲面部26〇而連結。 故而，上述曲面部250作為可動壁部22〇之外端部發揮功 能，並且上述曲面部260作為可動壁部22〇之内端部發揮功 能。 而且，可動壁部220形成為以外端部即上述曲面部25〇為 中心自由轉動，以使凹陷周壁部23〇朝向上方移動。 又，可動壁部220之外端部即曲面部250及内端部即曲面 部260均自接地面G相隔。此時，自接地部18〇所接地之接 地面G至内端部即曲面部26〇為止之高度m設定為2 mm以 上，且設定為自接地面G至外端部即曲面部25〇為止之高度 H2之45%以下。 159698.doc 17 201242855 凹陷周壁部230與瓶軸〇同軸地配設，並且一面隨著自上 方朝向下方而逐漸擴控一面形成為多段。於凹陷周壁部 230之上端部上，連接有與瓶抽〇同轴地配置之圓板狀之頂 壁240 ’由凹陷周壁部23〇及頂壁24〇之整體形成有頂筒 狀。 本實施形態之凹陷周壁部230包括隨著自可動壁部220之 瓶徑方向之内端部朝向上方而逐漸縮徑之下筒部23〇a、上 端部連設於上述頂壁240之外周緣部且隨著朝向下方而逐 漸擴徑並形成為朝向下方凸起之曲面狀之上筒部23〇b、及 將該等兩筒部230a、23Ob連結之段部230c，並且形成為2 段筒狀。 下筒部230a形成為橫剖面視圓形狀，且介由上述曲面部 260連結於可動壁部22(^於上筒部23〇1?上，形成有朝向瓶 位方向之内側凸出之凸出部230d。該凸出部230d係遍及除 了上筒部230b之上端部以外之瓶軸〇方向之大致全長而形 成’且如圖8所示係沿瓶周方向複數個相連地形成。 再者，於圖示之例中，沿瓶周方向相鄰之凸出部23〇d彼 此係沿瓶周方向隔開間隔地配置。 而且，上筒部230b之橫剖面視形狀藉由形成凸出部 230d，隨著自下方朝向上方而自多角形狀變形成圆形狀， 上筒部230b之上端部之橫剖面視形狀形成為圓形狀。於上 筒部230b中橫剖面視形狀形成為多角形狀之部分上，凸出 部230d形成為多角形狀之邊部，位於在瓶周方向上相鄰之 凸出部230d彼此之間之中間部分23〇e形成為多角形狀之角 159698.doc -18·16 S 201242855 310. As shown in FIG. 9, the bottom wall portion 190 includes an upright peripheral wall portion (four) that is connected to the ground portion 180 from the inside of the bottle pinching direction and that extends upward, and an annular portion that protrudes from the upper end portion of the standing peripheral wall portion 210 toward the inner side in the bottle diameter direction. The movable wall portion 220 and the recessed peripheral wall portion 230 that is connected to the movable wall portion 22 from the inside of the bottle diameter direction and extend upward. The ground portion 180 is in line contact with the ground plane G, for example, in a ring shape. The Fengli peripheral wall portion 210 is gradually reduced in diameter as it goes upward from the bottom. The movable wall portion 220 is formed in a curved shape that is convex downward, and gradually extends downward toward the inner end portion that is connected to the recessed peripheral wall portion 230 from the end portion that is connected to the peripheral wall portion 210. Further, in the present embodiment, the movable wall portion 22 and the upright peripheral wall portion 21 are connected by the curved surface portion 25 that is convex upward, and the movable wall portion 22 and the concave peripheral wall portion 230 are convex downward. The curved surface portion 26 is connected to each other. Therefore, the curved surface portion 250 functions as an outer end portion of the movable wall portion 22, and the curved surface portion 260 functions as an inner end portion of the movable wall portion 22A. Further, the movable wall portion 220 is formed to be freely rotatable about the outer end portion, that is, the curved surface portion 25A, so that the concave peripheral wall portion 23 is moved upward. Further, the curved portion 250 which is the outer end portion of the movable wall portion 220 and the curved portion 260 which is the inner end portion are separated from the ground surface G. In this case, the height m from the ground contact surface G to which the ground portion 18 is grounded to the curved end portion 26 that is the inner end portion is set to 2 mm or more, and is set from the ground contact surface G to the outer end portion, that is, the curved surface portion 25A. The height H2 is 45% or less. 159698.doc 17 201242855 The recessed peripheral wall portion 230 is disposed coaxially with the bottle shaft, and is formed in a plurality of stages while gradually expanding from the upper side toward the lower side. At the upper end portion of the recessed peripheral wall portion 230, a disk-shaped top wall 240' which is disposed coaxially with the bottle suction is formed with a top cylindrical shape from the entire concave peripheral wall portion 23 and the top wall 24'. The recessed peripheral wall portion 230 of the present embodiment includes a cylindrical portion 23〇a that gradually decreases in diameter as the inner end portion of the movable wall portion 220 in the bottle diameter direction faces upward, and an upper end portion that is connected to the outer periphery of the top wall 240. The portion is gradually expanded in diameter and formed into a curved upper tubular portion 23b that protrudes downward, and a segment 230c that connects the two tubular portions 230a and 23Ob, and is formed into a two-stage cylinder. shape. The lower tubular portion 230a is formed in a circular cross-sectional shape, and is connected to the movable wall portion 22 via the curved surface portion 260 (the upper tubular portion 23〇1 is formed to protrude from the inner side in the bottle direction). The portion 230d is formed to extend over substantially the entire length of the bottle axis direction except for the upper end portion of the upper tubular portion 230b, and is formed in a plurality of connected manners in the circumferential direction of the bottle as shown in Fig. 8. In the illustrated example, the projections 23〇d adjacent to each other in the circumferential direction of the bottle are disposed at intervals in the circumferential direction of the bottle. Further, the cross-sectional shape of the upper tubular portion 230b is formed by forming the projection 230d. The circular shape of the upper end portion of the upper tubular portion 230b is formed into a circular shape as viewed from the lower side toward the upper side, and the cross-sectional shape of the upper tubular portion 230b is formed into a polygonal shape. The projections 230d are formed in a polygonal shape, and the intermediate portions 23〇e between the projections 230d adjacent to each other in the circumferential direction of the bottle are formed into a polygonal shape angle 159698.doc -18·
S 201242855 部。 再者’於圖示之例中’列舉多角形狀為大致正三角形狀 之情形為例’但並不限定於該情形。 若以上述方式構成之瓶10内減壓，則可動壁部22〇以曲 面部250為中心朝向上方轉動，藉此可動壁部220以將凹陷 • 周壁部230朝向上方頂起之方式移動。即，藉由減壓時使 瓶10之底壁部19 0積極地變形，可吸收瓶1 〇之内壓變化（減 壓）。 尤其’該可動壁部220隨著自外端部即曲面部25〇朝向内 端部即曲面部260而逐漸向下方延伸，並且自接地面〇至内 端部即曲面部260為止之高度H1設定為自接地面g至外端 部即曲面部250之高度H2之45。/。以下而大大地確保高低 差，故而於内容物之填充時易於使可動壁部22〇朝向下方 轉動。因此，可使瓶10内之容積增大而提高剛填充後之減 壓吸收量，藉此可使減壓吸收性能提高。 而且，可動壁部220之内端部即曲面部26〇自接地面G相 隔2 mm以上，故而當隨著内容物之填充可動壁部220向下 方轉動時，曲面部260不易向較接地部丨8〇更下方飛出，從 • 而易於避免朝向接地面G之接觸。由此，即便於高溫填充 - 之情形時，亦可一面抑制曲面部260之上述飛出—面確實 地進行填充作業。 再者，於上述實施形態中，列舉可動壁部22〇之内端部 即曲面部260為上述可動壁部220中最靠近接地面〇之最下 端部之情形為例，但亦可考慮藉由可動壁部22〇之形狀瓶 159698.doc -19- 201242855 徑方向之大致中間部分成為最下端部之情形。於此種情形 時’至該最下端部為止之高度成為上述m。 又’本實施形態之瓶10較佳為内容量為】公升以下、接 地徑設定為85 mm以下且於75t以下（更詳細而言為阶至 之溫度範圍）進行填充内容物之作業時所使用之瓶。 再者’本發明之技術範圍並不限定於上述實施形態，可 於不脫離本發明之主旨之範圍内，添加各種變更。 例如，在上述實施形態中，如圓1G及圖u所示，於可動 壁部220上’即便以瓶軸〇為中心地以放射狀形成複數根肋 400亦可。即，各肋係沿瓶周方向而相等間隔地配設。 再者於圖示之例中，肋4〇〇係朝向上方凹陷成曲面狀 之複數個凹部400a沿瓶徑方向斷續且直線狀地延伸而形 成，藉此肋400係沿著瓶徑方向之縱剖面視形狀形成為波 形狀。又，各凹部400a分別形成為相同形狀相同大小沿 瓶徑方向而相等間隔地配置。而且，於複數根肋4〇〇之各 者上，配設有複數個凹部400a之沿著瓶徑方向之各位置相 同。 如此，藉由於可動壁部220上形成複數根肋4〇〇,可使可 動壁部220之表面積增加而增大受壓面積，故而可使可動 壁部220迅速地對應瓶1 〇之内壓變化而變形。 進而，如圖10及圖11所示，即便於豎立周壁部21〇上遍 及全周地形成凹凸部410亦可。再者，凹凸部41〇係藉由形 成為朝向瓶徑方向之内側凸起之曲面狀之凸部41〇a沿瓶周 方向隔開間隔地配設複數個而構成。 159698.docS 201242855 Department. Further, in the example shown in the figure, the case where the polygonal shape is a substantially positive triangular shape is exemplified, but the present invention is not limited thereto. When the inside of the bottle 10 configured as described above is decompressed, the movable wall portion 22 is rotated upward about the curved surface portion 250, whereby the movable wall portion 220 is moved to push the recessed peripheral wall portion 230 upward. That is, the inner wall portion 19 0 of the bottle 10 is positively deformed by decompression, and the internal pressure change (decrease) of the bottle 1 可 can be absorbed. In particular, the movable wall portion 220 gradually extends downward from the curved end portion 25, which is the outer end portion, that is, the curved surface portion 260, and the height H1 from the ground contact surface to the inner end portion, that is, the curved surface portion 260. It is 45 from the ground plane g to the outer end, that is, the height H2 of the curved surface portion 250. /. In the following, the height difference is greatly ensured, so that the movable wall portion 22 is easily rotated downward when the contents are filled. Therefore, the volume inside the bottle 10 can be increased to increase the amount of decompression absorption immediately after filling, whereby the reduced pressure absorption performance can be improved. Further, the curved end portion 26 which is the inner end portion of the movable wall portion 220 is separated from the ground surface G by 2 mm or more. Therefore, when the movable wall portion 220 is rotated downward as the contents are filled, the curved surface portion 260 is less likely to be inclined to the ground portion. 8〇 flies below, and it is easy to avoid contact with the ground plane G. Thereby, even in the case of high-temperature filling, it is possible to suppress the above-described flying-out surface of the curved surface portion 260 from surely performing the filling operation. In the above embodiment, the curved portion 260 which is the inner end portion of the movable wall portion 22 is the lowest end portion of the movable wall portion 220 which is closest to the ground contact surface, but may be considered as an example. The shape of the movable wall portion 22 is 159698.doc -19- 201242855 The middle portion of the radial direction is the lowermost portion. In this case, the height to the lowermost end becomes the above m. Further, the bottle 10 of the present embodiment is preferably used when the content is liters or less, the grounding diameter is set to 85 mm or less, and the content is filled at 75 t or less (more specifically, the temperature range). Bottle. Further, the technical scope of the present invention is not limited to the above-described embodiments, and various modifications can be added without departing from the spirit and scope of the invention. For example, in the above-described embodiment, as shown by the circle 1G and the figure u, the plurality of ribs 400 may be formed radially on the movable wall portion 220 even centering on the bottle axis. That is, each of the ribs is disposed at equal intervals in the circumferential direction of the bottle. Further, in the illustrated example, the plurality of concave portions 400a which are recessed in a curved shape toward the upper side are formed to be intermittently and linearly extended in the bottle diameter direction, whereby the ribs 400 are along the bottle diameter direction. The longitudinal cross-sectional shape is formed into a wave shape. Further, each of the concave portions 400a is formed to have the same shape and the same size and arranged at equal intervals in the bottle diameter direction. Further, each of the plurality of ribs 4A is provided with the same position along the direction of the bottle diameter. In this manner, since the plurality of ribs 4 形成 are formed on the movable wall portion 220, the surface area of the movable wall portion 220 can be increased to increase the pressure receiving area, so that the movable wall portion 220 can quickly respond to the internal pressure change of the bottle 1 〇. And deformation. Further, as shown in Figs. 10 and 11, the uneven portion 410 may be formed over the entire circumference of the standing peripheral wall portion 21A. Further, the uneven portion 41 is formed by arranging a plurality of curved convex portions 41a formed in a direction toward the inner side in the bottle diameter direction at intervals in the bottle circumferential direction. 159698.doc
S •20· 201242855 如此’藉由形成凹凸部410’例如，入射至豎立周壁部 21〇之光藉由凹凸部41〇而漫反射、或瓶1〇内之内容物亦裝 滿凹凸部410内等，藉此於觀察填充有内容物之瓶1〇之底 部140時不易感到不諧調感。 又，於上述實施形態中，豎立周壁部21〇亦可適當變更 為例如使其沿瓶軸Ο方向平行地延伸等。又，可動壁部220 亦可適當變更為例如形成為平面狀或朝向上方凹陷之凹曲 面狀等。 又 > 於上述實施形態中，將上筒部230b形成為朝向下方 凸起之曲面狀，但並不限定於該形狀。 又’於上述實施形態中’沿瓶周方向相鄰之凸出部23〇d 彼此係沿瓶周方向隔開間隔地配置，但並不限定於此，例 如’凸出部230d彼此亦可沿瓶周方向不隔開間隔地配置， 而相互直接連結。於該情形時，上筒部23〇b中，配設有凸 出部230d之部分之橫剖面視形狀亦可形成為圓形狀，上筒 部230b之橫剖面視形狀亦可遍及瓶軸〇方向之全長地形成 為圓形狀。 又’凸出部230d並非必需亦可不具備。進而，凹陷周壁 部230係形成為2段筒狀’但既可形成為3段以上之筒狀， 亦可不形成為多段狀。 又’形成瓶10之合成樹脂材料亦可適當變更為例如：聚 對苯二甲酸乙二醇酯、或聚萘二曱酸乙二醇酯、非晶性聚 酉曰4、或者该4之混合材料等。進而，瓶1 〇並不限於單層 構造體亦可形成具有中間層之積層構造體。再者，作為該 159698.doc •21 · 201242855 中間層例如可列舉：包含具有氣體阻隔性之樹脂材料之 層、包含再生材料之層、或包含具有吸氧性之樹脂材料之 層等。 又，於上述實施形態中’將肩部12、主體部13及底部η 之各自之正交於瓶軸〇之橫剖面視形狀設定為圓形狀，但 並不限於此’例如，亦可適當變更為形成為多角形狀等。 [產業上之可利用性] 根據本發明之實施形態之瓶’可使瓶内之減壓吸收性能 提向。 【圖式簡單說明】 圖1係本發明之實施形態中之瓶之側視圖。 圖2係圖1所示之瓶之仰視圖。 圖3係沿著圖2所示之A-Α線之瓶之剖面圖。 圖4係沿著圖2所示之b_b線之瓶之剖面圖。 圖5係表示本發明之實施形態之變形例之瓶的仰視圖。 圖6係沿著圖5所示之C-C線之瓶之剖面圖。 圖7係本發明之實施形態中之瓶之側視圖。 圖8係圖7所示之瓶之仰視圖。 圖9係沿著圖8所示之a· a線之并瓦之剖面圖。 圖1〇係表示本發明之實施形態之變形例之瓶的仰視圖。 圖11係沿著圖10所示之B-B線之瓶之剖面圖。 【主要元件符號說明】 1 瓶 10 瓶 159698.doc •22· 201242855 11 12 13 14 15 16 17 18 19 20 21 22 23 23a 24 25 26 27 28 29 40 40a 41 口部 肩部 主體部 底部 第1環狀凹槽 第2環狀凹槽 跟部 接地部 底部之底壁部 第3環狀凹槽 豎立周壁部 可動壁部 凹陷周壁部 彎曲壁部 頂壁 曲面部（可動壁部與豎立周壁部之連接部 分） 曲面部 跟下端部 上跟部 連結部分 肋In the case where the concave-convex portion 410' is formed, for example, the light incident on the vertical peripheral wall portion 21 is diffused and reflected by the concave-convex portion 41, or the contents in the bottle 1 is also filled in the concave-convex portion 410. And so on, it is not easy to feel uncomfortable when observing the bottom 140 of the bottle filled with the contents. Further, in the above-described embodiment, the upright peripheral wall portion 21A may be appropriately changed to, for example, extend in parallel in the direction of the axis of the bottle. Further, the movable wall portion 220 may be appropriately changed to, for example, a flat curved shape or a concave curved surface that is recessed upward. Further, in the above embodiment, the upper tubular portion 230b is formed in a curved shape that is convex downward, but is not limited to this shape. Further, in the above-described embodiment, the projections 23 〇d adjacent to each other in the circumferential direction of the bottle are arranged at intervals in the circumferential direction of the bottle. However, the present invention is not limited thereto. For example, the projections 230d may be along each other. The circumferential direction of the bottle is not spaced apart and is directly connected to each other. In this case, the cross-sectional shape of the portion of the upper tubular portion 23b in which the projection 230d is disposed may be formed in a circular shape, and the cross-sectional shape of the upper tubular portion 230b may be in the direction of the axis of the bottle. The full-length terrain is rounded. Further, the projections 230d are not required or provided. Further, the recessed peripheral wall portion 230 is formed in a two-stage cylindrical shape, but may be formed in a cylindrical shape of three or more stages, or may not be formed in a plurality of stages. Further, the synthetic resin material forming the bottle 10 can be appropriately changed to, for example, polyethylene terephthalate, polyethylene naphthalate, amorphous poly 4, or a mixture of the four. Materials, etc. Further, the bottle 1 is not limited to a single-layer structure, and a laminated structure having an intermediate layer may be formed. In addition, as the intermediate layer of the 159698.doc • 21 · 201242855, for example, a layer containing a resin material having gas barrier properties, a layer containing a regenerated material, or a layer containing a resin material having oxygen absorbing property may be mentioned. Further, in the above-described embodiment, the cross-sectional shape of the shoulder portion 12, the main body portion 13, and the bottom portion η orthogonal to the bottle axis is set to a circular shape. However, the present invention is not limited thereto. For example, the shape may be changed as appropriate. To form a polygonal shape or the like. [Industrial Applicability] The bottle ' according to the embodiment of the present invention can improve the pressure-reducing absorption performance in the bottle. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view of a bottle in an embodiment of the present invention. Figure 2 is a bottom plan view of the bottle shown in Figure 1. Figure 3 is a cross-sectional view of the bottle along the line A-Α shown in Figure 2. Figure 4 is a cross-sectional view of the bottle along line b_b shown in Figure 2. Fig. 5 is a bottom view showing a bottle according to a modification of the embodiment of the present invention. Figure 6 is a cross-sectional view of the bottle taken along line C-C shown in Figure 5. Fig. 7 is a side view of the bottle in the embodiment of the present invention. Figure 8 is a bottom plan view of the bottle shown in Figure 7. Figure 9 is a cross-sectional view taken along the line a·a shown in Figure 8. Fig. 1 is a bottom view showing a bottle according to a modification of the embodiment of the present invention. Figure 11 is a cross-sectional view of the bottle taken along line B-B shown in Figure 10. [Main component symbol description] 1 bottle 10 bottles 159698.doc •22· 201242855 11 12 13 14 15 16 17 18 19 20 21 22 23 23a 24 25 26 27 28 29 40 40a 41 mouth shoulder body bottom 1st ring Groove groove second annular groove bottom portion bottom portion bottom portion third annular groove vertical peripheral wall portion movable wall portion recessed peripheral wall portion curved wall portion top wall curved surface portion (connection of movable wall portion and upright peripheral wall portion) Part) the curved part and the lower end upper heel joint part rib
凹部 凹凸咅P 159698.doc •23· 201242855 41a 凸部 140 底部 170 跟部 180 接地部 190 底部之底壁部 200 第3環狀凹槽 210 豎立周壁部 220 可動壁部 230 凹陷周壁部 230a 下筒部 230b 上筒部 230c 段部 230d 凸出部 230e 中間部分 240 頂壁 250 曲面部（可動壁部之外端部） 260 曲面部（可動壁部之内端部） 270 跟下端部 280 上跟部 290 連結部分 310 第4環狀凹槽 400 肋 400a 凹部 410 凹凸部 159698.doc -24· s 201242855 410a 凸部 HI、H2 1¾度 0 瓶軸 T 自接地部至曲面部為止之高度 Θ1 豎立周壁部之傾斜角度 Θ2 可動壁部與豎立周壁部所成之角度 159698.doc -25-Concave concave and convex 咅P 159698.doc •23· 201242855 41a convex portion 140 bottom portion 170 heel portion 180 grounding portion 190 bottom bottom wall portion 200 third annular groove 210 erected peripheral wall portion 220 movable wall portion 230 recessed peripheral wall portion 230a lower tube Part 230b Upper tube portion 230c Segment portion 230d Projection portion 230e Middle portion 240 Top wall 250 Curved portion (External end portion of movable wall portion) 260 Curved portion (inner end portion of movable wall portion) 270 Lower end portion 280 Upper heel portion 290 joint portion 310 fourth annular groove 400 rib 400a concave portion 410 concave and convex portion 159698.doc -24· s 201242855 410a convex portion HI, H2 13⁄4 degrees 0 bottle axis T height from the ground portion to the curved portion Θ 1 erected peripheral wall portion The angle of inclination Θ2 the angle between the movable wall portion and the vertical peripheral wall portion 159698.doc -25-