1260996 (1) 玖、發明說明 【發明所屬之技術領域】 本發明是關於噴灑裝置，特別是關於具備能夠一邊使 噴嘴迴旋一邊噴灑之蓮蓬頭（shower head )的噴灑裝置 【先前技術】 以往’具有日本特開平5 - 1 2 3 6 1 3號公報所揭示的技 術’作爲將噴嘴迴旋來進行噴灑的噴灑裝置（蓮蓬頭）。 追是在於噴嘴室內，利用將噴嘴前端密著於噴嘴承受部， 且藉由水流使設在迴旋噴嘴的葉片旋轉，來使噴嘴自轉， 在f昔由圈條齒輪（r a c k - a n d - p i n i ο η )機構，使噴嘴在噴 嘴室內迴旋者。 此噴灑裝置是爲了容易使噴嘴容易迴旋，而將齒條齒 輪機構或葉片設於噴嘴。因此，使得零件形狀變得複雜， 且加工費用變高。又，藉由噴嘴迴旋，會產生噴嘴承受部 容易磨損的問題。 又’在日本實開昭5 4 - 1 2 7 6 1 5號公報，揭示有：具有 切換噴灑形態的噴灑切換裝置之噴灑裝置用蓮蓬頭。且， 日本特表2 0 0 2 - 5 20 1 5 6號公報揭示有··具有迴旋的噴嘴之 噴灑裝置用蓮蓬頭。 但’在於這些蓮蓬頭，由於具備噴灑切換機構，故使 3頁邰變重。因此，在使用蓮蓬頭中，使用者不小心將蓮蓬 3頁掉落；的情況時，會有受到頭部等與地面衝突之衝擊使其 -5 - 1260996 (2) 破損之虞。在如此蓮蓬頭本身重的情況時，也會有造成噴 嘴迴旋的妨礙之虞。 【發明內容】 本發明是爲了解決上述問題點而開發完成的具備其目 的在於：提供一種即可迴旋又可噴灑之噴嘴的噴灑裝置， 1匕裝置是能將零件結構作成簡單來抑制加工費’獲得耐久 性的提昇，並且無論是在通水流初期或噴灑中，始終均可 進行穩定的噴灑，特別是適合噴灑於人體之噴灑裝置。 爲了解決課題之至少一部分，本發明之噴灑裝置’是 一種組裝有：供冷、熱水流入之圓周呈圓筒狀的流入室、 將流入到流入室內的冷、熱水加以噴灑之噴嘴的噴灑裝置 ，其特徵爲♦•在流入室形成流入口，使得流入到流入室內 的冷、熱水沿著流入室內的內周壁面引起迴旋（水）流’ 前述噴嘴是具有噴嘴本體、與直徑較此噴嘴本體小之噴嘴 前端部，將此噴嘴前端部由流入室的開口面臨外部’而以 流入室的開口部的端部之噴嘴支承部支承噴嘴本體’藉由 迴旋流，使得噴嘴可擺動。 藉此，因冷、熱水由流入口流入形成迴旋，所以從開 始進行通水時，充分的迴旋流衝突於噴嘴的軸方向全^ ° 因此，噴嘴不會偏移預定方向，能夠均衡且充分地過旋來 進行噴灑。 1260996 (3) (申請專利範圍第2項） 在此發明的理想形態，其中前述縱長的流入口是對於 流入室的軸方向呈縱長形狀，形成於流入室的內周壁面之 接線方向。 藉此，能夠沿著流入室內的軸方向均等地產生迴旋流 ，且可維持由設在接線方向的流入口流入之冷、熱水的勢 力，沿著內周壁面有效率地產生迴旋流。 (申請專利範圍第3項） 在此發明的理想形態，其中在前述流入室的上游，構 成用來切換其他的噴灑口與流通路之切換機構，形成可切 換來自於噴嘴的噴灑水與來自於其他的噴灑口的噴灑水， 並且在流入口的上游側及切換機構的下游側，形成噴灑水 流室。 藉此，由於以介裝切換機構來使通水流面積改變，在 切換機構的下游側及流入口的上游側形成噴灑水流室’來 使冷、熱水暫時儲存於該噴灑水流室抑制通水流的紊亂後 使之流入到流入口內，故在流入室內可獲得充分的迴旋流 (申請專利範圍第4項） 在此發明的理想形態，其中前述噴嘴是在噴嘴本體的 另一端部具備具有噴嘴本體的外徑大的直徑之配重部，且 由該配重部沿著噴嘴本體的軸方向形成通水流通路’並且 -7- 1260996 (4) - 在前端邰形成有用來連通通水流通路的噴灑水口。 藉此’因在流入室內所產生的迴旋流的迴旋成分在沿 著噴嘴的軸方向所形成的通水流通路內被減輕，所以能夠 · · 抑制來自於噴嘴的噴灑水之紊亂。因此，能夠將冷、熱水 的勢力作爲噴灑方向的成分來加以利用，而可以由噴嘴獲 得具有規則性且無紊亂之迴旋噴灑水。 (申請專利範圍第5項） φ 在此發明的理想形態，其中設在前述噴嘴的前端部之 噴灑口是形成有複數個。 藉此，由於流動到通水流通路中的冷、熱水被分散至 複數個噴灑口’故能夠減輕各個噴灑口之迴旋成分。因此 ’能夠將冷、熱水的勢力利用於噴灑方向，而可以由噴嘴 獲得具有規則性且無紊亂之迴旋噴灑水。 (申請專利範圍第6項） 馨 在此發明的理想形態，其中在前述噴嘴的通水流通路 中設置整流板。 藉此’能夠更減低迴旋成分，能將冷、熱水的勢力利 用於噴灑方向，而可以由噴嘴獲得具有規則性旦無素亂$ 迴旋噴灑水。 (申請專利範圍第7項） 在此發明的理想形態，其中在位於流入室內的噴嘴本體或 1260996 (6) (申請專利範圍第9項） 在此發明的理想形態，其中對於前述噴嘴’非對稱地 施加通水流初期時所流入的冷、熱水之水壓。 藉此，因不拘於噴灑裝置的姿勢’藉由由流入口所流 到的初期通水流時之冷、熱水所產生的迴旋流對於噴嘴非 對稱地施加水壓，所以噴嘴失去平衡而容易傾斜。因此’ 由通水流初期的階段，噴嘴變得容易迴旋。 具體而言，在本發明，與以往技術之具有葉片的噴嘴 不同，是作成藉由迴旋流的勢力來使噴嘴迴旋之簡單形狀 。但在採取如此的噴嘴之情況時，當欲以均等且無紊亂之 迴旋流來加以迴旋時，則由於對於噴嘴’對稱地施加迴旋 流的力，故在通水流初期會有噴嘴不迴旋之虞。又，在使 噴嘴的前端部由外部面臨流入室的開口部而以流入室的噴 嘴支承部支承噴嘴的情況時，噴嘴容易在對於開口部呈垂 直（豎立狀態）地被支承。當在此垂直地被支承的狀態下 所流入的冷、熱水的水壓對稱地施加於噴嘴時則噴嘴在不 傾斜的狀態下進行噴灑。因此，藉由本發明的結構，能從 通水流初期的階段使噴嘴確實地傾斜而加以迴旋。 (申請專利範圍第1 0項） 在此發明的理想形態，其中前述配重部是在大致圓柱 形的側面形成垂直面。 藉此，不拘於配置噴灑裝置的方向，藉由由流入口所 -10- 1260996 (7) 流來的冷、熱水所產生的迴旋流在切削了噴嘴的配重部之 側面紊亂，受到該紊亂，噴嘴失去平衡而容易傾斜。因此 ，由通水流初期的階段噴嘴變得容易迴旋。 具體而言，在本發明，與以往技術之具有葉片的噴嘴 不同，是作成藉由迴旋流的勢力來使噴嘴迴旋之簡單形狀 。但在採取如此的噴嘴之情況時，當欲以均等且無紊亂之 迴旋流來加以迴旋時，則由於對於噴嘴，對稱地施加迴旋 流的力，故在通水流初期會有噴嘴不迴旋之虞。又，在使 噴嘴的前端部由外部面臨流入室的開口部而以流入室的噴 嘴支承部支承噴嘴的情況時，噴嘴容易在對於開口部呈垂 直（豎立狀態）地被支承。當在此垂直地被支承的狀態下 所流入的冷、熱水的水壓對稱地施加於噴嘴時則噴嘴在不 傾斜的狀態下進行噴灑。 因此，如本發明，以切削配重部的側面，來在該部分 產生迴旋流的紊亂，使施加於噴嘴的水壓失去平衡。藉此 ，因能夠不拘於噴灑裝置的姿勢，藉由初期的通水流，噴 嘴對於流入室的軸產生傾斜，所以噴嘴可藉由已被通水之 迴旋流立刻穩定地迴旋，來進行噴灑。 (申請專利範圍第1 1項） 在此發明的理想形態，其中前述配重部是對於大致呈 圓柱形的側面形成垂直面，使得形成相對向的兩側面。 藉此’噴嘴同時進行：在傾斜的狀態下擺動的迴旋、 與藉由此迴旋，噴嘴本身對於軸進行旋轉的自轉。又，藉 -11 - 1260996 (8) 由迴旋流進入到已切削的噴嘴側面，來施加與噴嘴的自轉 相反方向之力量。因此’抑制了噴嘴的自轉。這是在配重 部的兩側，比起形成一側面’形成兩側面更有效果。 (申請專利範圍第1 2項） 在此發明的理想形態’其中前述噴嘴爲金屬製。 藉此，比起例如以合成樹脂等所形成的輕量之噴嘴， 可抑制噴嘴之迴旋速度變得過快’能夠以適度的速度加以 旋轉。特別是因在噴嘴之配重部的切削的側面產生紊亂， 所以能夠抑制噴嘴的旋轉速度。因此’在朝利用者的身體 噴灑的情況時’能夠賦予在預定的範圍內間歇地敲擊之感 覺，可提供以往淋浴噴嘴所不具有的噴灑感。 (申請專利範圍第1 3項） 在此發明的理想形態，其中使流入室的冷、熱水由前 述流入室的噴嘴支承部與噴嘴之間隙流出。 藉此，由於冷、熱水流入至噴嘴與流入室的噴嘴支承 部之間，此冷、熱水發揮潤滑劑的功能’故能夠抑制噴嘴 的磨損而提昇耐久性。再者’前述噴嘴與噴嘴支承部的間 隙是設置成流入至噴嘴周圍的冷、熱水可發揮前述潤滑劑 的功能之大小爲佳。 (申請專利範圍第1 4項） 在此發明的理想形態，其中將由前述流入室的噴嘴支 -12 - 1260996 Ο) 承部與噴嘴之間隙所流出的冷、熱水沿著噴嘴前端部的外 面傳達’與來自於噴嘴的噴灑口之噴灑水一同噴灑。 藉此’由噴嘴周圍所流出的冷、熱水能夠減低受到擺 動的噴嘴所飛散。即，來自於噴灑裝置的噴灑水不會紊亂 ’能使由噴嘴周圍所流出的冷、熱水會聚於由噴灑口所噴 灑出的冷、熱水，來進行噴灑。 (申請專利範圍第1 5項） 在此發明的理想形態，其中前述噴嘴的前端部是對於 位在流入室的開口部的噴嘴直徑，將前端的直徑形成大致 相同直徑以下。 因藉由將噴嘴前端部作成上述形狀，使得由噴嘴周圍 所流出的冷、熱水容易傳達於噴嘴的前端部，所以能夠減 低朝周圍飛散。又，能僅以由流入室的內側安裝噴嘴，來 組裝噴灑裝置。 (申請專利範圍第丨6項） 在此發明的理想形態，其中前述噴嘴，是由：在大致 呈圓柱形的噴嘴本體的一端部具有噴灑口的前端部、在另 一端部具有較噴嘴本體的外徑較大直徑的配重部所一體成 形的，由配重部沿著噴嘴本體的軸方向形成1個通水流通 路’並且在前端部形成複數個噴灑口。 · 藉此，由於在流入室內所產生的迴旋流之迴旋成分在 沿著噴嘴的軸方向所形成的通水路徑內被減輕’且水流分 -13- 1260996 (10) 散於複數個噴灑口，故能夠將來自於噴嘴的噴灑水加以整 流° (申請專利範圍第丨7項） 在此發明的理想形態，其中前述噴嘴，是由金屬製或 插入有金屬部的合成樹脂製的構件所構成的，且噴嘴支承 部由合成樹脂製所構成。 藉此，噴嘴形成適度的重量，能夠將旋轉速度抑制於 適當的旋轉數的範圍內。即，由於當噴嘴的所有構件以合 成樹脂來形成時則會變得輕量，故會有噴嘴的旋轉數過高 ’在迴旋噴灑水上變得無法獲得間歇感之虞。因此，在本 發明’藝能以抑制噴嘴的旋轉數，來在迴旋噴灑水上獲得 間歇感。又，藉由以與噴嘴支承部不同的材料來形成噴嘴 ，可減低這些的摩擦。 (申請專利範圍第1 8項） 在此發明的理想形態，其中前述噴嘴的前端部形成不 會露出噴灑裝置的外面。 藉此，即使在利用者不小心使噴灑裝置落下的情況時 ’由於噴嘴等不會直接衝擊地板等，故能緩和對於噴嘴的 衝擊。 (申請專利範圍第1 9項） 在此發明的理想形態，其中在前述流入室的上游構成 -14 - 1260996 (11) 用來切換其他的噴口與沉通路之切換機構，形成可切換 來自於則述噴嘴的噴灑水與其他噴灑口的噹灑水。 緖此，可因應利用者的喜好，不僅可選擇使噴嘴迴旋 來噴灑之噴灑形態’尙能選擇其他的噴灑形態。例如在應 用於浴室用的蓮蓬頭的情況時，能夠切換成噴嘴之迴旋所 形成的具有間歇感之噴灑水、通常的噴灑淋浴或泡沫淋浴 等，來享受淋浴。 (申請專利範圍第2 0項） 在此發明的理想形態’其中前述切換機構是至少由·· 對於噴灑裝置的外圍加以固定的旋轉軸和卡止於此旋轉軸 的流通路切換板；及對於噴灑裝置的外圍可旋轉自如地設 置的噴灑切換操作部和與此噴灑切換操作部連動來旋轉的 流通路切換機構部所構成的，在流通路切換板與流通路切 換機構部的內周部與外周部分別形成通水孔，藉由使噴灑 切換操作部旋轉，使已被固定的流通路切換板的內周部之 通水孔與流通路切換機構部的內周部之通水孔連通，或使 已被固定的流通路切換板的外周部之通水孔與流通路切換 機構部的外周部之通水孔連通來切換噴灑，在此固定軸與 流通路切換板之間設置彈黃，藉由此彈簧的彈力，使流通 路切換板抵接於流通路切換機構部，並且彈簧的彈力朝噴 灑形態切換單元對於噴灑裝置的外圍遠離的方向彈推。 藉此，即使例如利用考使噴灑裝置（例如，蓮蓬頭） 落下的情況時，即使噴灑形態切換單元或蓮蓬頭本體其中 -15- 1260996 (12) 一者與地板衝突，這些的重量也能夠藉由彈簧的彈力來吸 收◦藉此，能夠防止蓮蓬頭破損。 (申請專利範圍第2 1項） 在此發明的理想形態，其中在前述噴灑形態之一更具 有由已迴旋的噴嘴加以噴灑的噴灑形態，將用來生成此噴 灑形態的噴嘴單元配置於流通路切換機構部，此噴嘴單元 以供冷、熱水流入的流入室、將流入到流入室內的冷、熱 水加以噴灑的噴嘴所構成，且在流入室形成有流入口，來 使流入到流入室內的冷、熱水沿著流入室內的內周壁面引 起迴旋流，並且噴嘴是具有噴嘴本體與較噴嘴本體小直徑 的前端部，使此前端部由流入室的開口部面臨外部，並且 噴嘴的前端部形成不會露出噴灑裝置的外面，又，以流入 室內的噴嘴支承部支承噴嘴本體，藉由迴旋流一邊使噴嘴 迴轉一邊進行噴灑。 藉此，在於具備迴旋的噴嘴之噴灑裝置（例如，蓮蓬 頭）’由於噴嘴前端不會露出於蓮蓬頭的外面，即使在於 利用者不小心將蓮蓬頭掉落時，也不會有噴嘴本身與地板 衝突之虞。因此，能有效地防止噴嘴的變形或破損。 【實施方式】 以下，參照圖面，更具體地說明本發明。 第1至3圖是顯示將本發明的噴灑裝置應用於蓮蓬頭 1的實施例。第1圖顯示全體的斷面圖，第2及3圖分別 -16 - 1260996 (13) 顯示噴灑時、及來自於噴嘴的迴旋噴灑時的頭部ία之擴 大斷面圖。 此蓮蓬頭1是利用於在浴室或淋浴室等將身體噴淋者 。再者，此蓮蓬頭1連接於由未圖示的冷、熱水混合水栓 分歧的噴淋管。 此噴灑裝置，是在於蓮蓬頭1的頭部1 A，具備具有 一邊迴旋一邊進行噴灑的噴嘴9之噴灑形態切換單元2。 前述噴灑形態切換單元2具備旋轉軸3、噴灑切換操 作部4、散水板5、噴嘴導件8及噴嘴9，在內部具備流 通路切換板6 '流通路切換機構部7、噴嘴單元2 a (噴嘴 盒1 〇等）及彈簧1 1。又雖省略圖示，在水密地保持的部 位使用圓形環、襯墊。 其次’具體地說明前述噴灑形態切換單元2的各構成 要素。 首先’前述旋轉軸3如第4圖（B )所示，大致呈圓 盤形狀’在此大致呈圓盤形狀的中央突設有圓筒狀的公螺 紋部3 e。且在此公螺紋部3 e的內側，設置有：朝上游側 呈錐形的突部3 b。此突部3 b經由呈放射狀地延設之平板 狀的3個導引部3 d連結於公螺紋部3 e的內壁。這些導引 部3 d間的間隙形成流通路3 c。又，介由將突部3 b作成 錐形，能夠使由通水路徑1 5流入之冷、熱水圓滑地通過 流通路3 c供給至噴灑形態切換單元2。 前述噴灑切換操作部4係同樣地如第4圖（B )所示 ，形成上下均開放之顛倒的大致碗形筒狀。且組裝成由此 -17 - 1260996 (15) 灑時不會產生止水狀態◦關於這一點，詳細說明如後。 前述流通路切換機構部7如第6圖所示’呈在內壁不 具有與隔壁7 a —體設置的底面之筒狀。在此流通路切換 機構部7的上面7 b ’以前述隔壁7 a爲境界設置有用來在 __通水之通水孔1 7 a、與在外側通水用的通水孔17b。 又，在流通路切換機構部7的外周壁與隔壁7 a之間形成 有噴灑水流室2 1。在形成有2個流入口 2 3的噴灑裝置， 於初期的通水時，由此噴灑水流室2 1流入至2 3 /的通水量 完全不同。因此，此已經流入的通水之水壓非對稱地施加 於嚙嘴9。藉此，噴嘴9失去平衡而谷易傾斜。然後，經 過一定時間的通水，此噴灑水流室2 1形成滿水狀態’來 自於2個流入口 2 3的通水量也幾乎變得相同。藉此’在 流入室內產生平衡狀態良好的迴旋流’能夠使噴嘴9持續 且穩定地迴旋。 前述噴嘴單元2 A如第7圖所示，組合噴嘴盒1 〇、噴 嘴9及噴嘴導件8來構成的。藉由將此噴嘴盒1 0與噴嘴 導件8重疊，來形成流入室。然後在此流入室內收容噴嘴 9，並且使噴嘴的前端部9 c由噴嘴導件8的開口 8 a (參 照第2圖）面臨流入室的外部。 前述噴嘴盒1 〇如第8至1 0圖所示’形成不具備底面 之大致呈筒狀，在側面對於中心軸呈點對稱地具備有2個 細縱長之流入口 2 3。此流入口 2 3如第1 〇圖所示’對於 噴嘴盒1 0的內周面形成於接線方向。由此流入口 2 3流入 到噴嘴盒1 〇內的冷、熱水是如第1 1圖所示，在噴嘴單元 -19- 1260996 (16) 2 A內迴旋。特別是因將流入口 2 3作成與噴嘴單元2 A的 軸大致平行之細縱長形狀，所以形成對於此軸容易產生更 均等的迴旋流。又，因通水由流入口 2 3圓滑地流入至內 周面後加以迴旋，所以能夠有效地抑制壓力損失。又，若 流入口 2 3爲能夠使通水迴旋的構造的話’則不拘其形狀 、數量、設置位置等。例如，亦可將流入口 2 3在接線方 向以外的方向形成朝側面或上面傾斜的方向。又，亦可如 第1 2圖所示，爲1個流入口 2 3。 前述噴嘴9如第1 3圖所示，在大致呈圓柱形的噴嘴 本體9b延設較此噴嘴本體9b的直徑小之前端部9c，在 另一端部延設較噴嘴本體9b的直徑大之配重部9 a，來加 以一體成形。然後’如第1 3圖（D )所示，形成有沿著 噴嘴9的軸方向貫通之通水路徑1 3 °此通水路徑1 3如第 1 3圖（B )所示，在噴嘴9的前端部9c，沿著軸方向分歧 成4個噴灑口 1 3 a。再者，噴灑口 1 3爲複數個的話，則 不拘其數目。如此’因沿著噴嘴9的軸方向設置通水路徑 1 3 (噹丨麗口 1 3 a )’所以能夠使在噴嘴單元2 A內所產生 的迴旋流之迴旋成分在噴嘴9的通水路徑1 3 (噴灑口 1 3 a )內減輕。再者’亦可如第1 4圖所示’在此通水路徑1 3 內$虞整流板9 1 a，來減輕迴旋流的迴旋成分。 又，如第1 3圖（C ) 、 （ D )所示，在噴嘴9的配重 部9 a的側部形成有孔1 3 b。_由使初期的通水流入至此 孔丨3 b，使得噴嘴9變得容易朝斜方向傾斜，能夠容易開 始進行噴嘴9的迴旋◦此孔1 3 b是能夠藉由形成在通水路 -20- 1260996 (17) 徑1 3的對向之兩方的側部，來更容易開始進行噴卩角9的 迴旋。此孔1 3 b亦可形成於噴嘴本體9 b的側部。 噴嘴9的前端部9 c如第1 5圖（C )所示，形成例如 由噴嘴本體9 b側朝前端直徑變小。藉此，由噴嘴9與噴 嘴支承部1 2之間隙流出的冷、熱水傳達至前端部9 c ’會 聚於來自於噴灑口 1 3 a的噴灑水。特別是如第1 5圖（B ) 所示，因在噴嘴前端部9 c形成螺旋狀槽9 0 c，藉由此螺 旋狀槽9 0 c使得由噴嘴9與噴嘴支承部1 2之間隙所流出 的冷、熱水確實地傳達。 又，亦可如第1 5圖（b )所示，藉由使噴嘴9的配重 部9 a對軸偏心而加以形成，來使噴嘴9容易傾斜。在此 情況時，在噴嘴9迴旋時在蓮蓬頭1不會產生大的振動的 程度下加以偏心爲佳。 又，蓮蓬頭1多數在頭部1 A朝向傾斜方向的狀態下 被使用（參照第1圖）。例如，多數是在保持於噴灑鉤（ 未圖示）的狀態、或使用者將手朝上方舉起而握持蓮蓬頭 1的狀態下被使用的情況。因此，配置在頭部1 A內的噴 嘴9本身也形成朝斜方向傾斜的狀態。但，如上所述，因 在噴嘴9的配重部9 a設置孔1 3 b，所以即使蓮蓬頭1在 朝何種方向或角度下被配置，也能夠容易引起噴嘴9的通 水初期之迴旋起動。 前述噴嘴導件8如第1 6圖所示，在其中央部具備僅 噴嘴9的前端部9 C突出之開口 8 a。此噴嘴導件8是具備 供前述噴嘴本體9 b端部的噴嘴後段9 d的一部分抵接的噴 -21 - 1260996 (13) 嘴支承部1 2。藉此，噴嘴9在傾斜於噴嘴支承部1 2的狀 態下被支承，進行擺動動作來迴旋。又，在噴嘴導件8的 _ ϊ而部8 b形成有凹部8 c，噴嘴9的則i而部9 c在此凹部 8 c內迴旋。即，如第2及3圖等所示，形成在噴嘴9的 通水路徑1 3之下端部的噴灑口 1 3 a的前端形成不會露出 於噴嘴導件8的下面。 因此，即使在利用者不小心使蓮蓬頭1掉落的情況時 ’噴嘴9不會直接與地板衝突，故能夠緩和衝擊而防止損 傷。又，嵌入於前述旋轉軸3的彈簧11也可達到吸收掉 落所引起的衝擊之效果。 構成噴嘴9的配重部9 a之外形是形成較插入噴嘴9 側的噴嘴導件8之插入部8 d的內徑大。因此，在利用者 不小心使蓮蓬頭1掉落，使得噴嘴導件8的前端部8 b破 損的情況時，噴嘴9也不會由噴嘴導件8掉落出來。 其次，說明關於噴灑形態切換單元2的具體組裝方法 〇 首先’將旋轉軸3與旋轉軸3連動地加以定位後，將 此流通路切換板6嵌裝於旋轉軸3。即，藉由將流通路切 換板6的肷5片6 a肷裝於旋轉軸3的導引部3 ^來加以固 定。 又，將彈簧11裝設於旋轉軸3的突部3 d的內側空間 (參照第2、3圖）。藉由此彈簧丨1的彈推力與將流入的 通水之水壓，來使流通路切換板6的嵌合片6a抵接於流 通路切換機構部7的圓形環，保持水密性。 -22 - 1260996 (19) 然後’將嵌裝有此流通路切換板6的旋轉軸3之公螺 紋部3 e插入至噴灑切換操作部4的開口 4d、4c來加以組 衣（參^第4圖）。再者，亦可在將旋轉軸3組裝於噴灑 切換操作部4後，將流通路切換板6組裝於旋轉軸3。 接著’在將前述流通路切換機構部7與噴灑切換操作 d 4連動地加以定位的狀態下，嵌裝於此噴灑切換操作部 4內。然後’將噴嘴單元2 A嵌裝於此流通路切換機構部 7的隔壁7 a的內側。 又’利用散水板5的螺絲部5 c，使散水板5螺裝於 噴灑切換操作部4的端部內側。藉此，不僅可使噴嘴導件 8及噴嘴9的前端部由散水板5的開口部5 b突出，並且 能以散水板5被覆噴灑切換操作部4的內部（參照第2及 3圖）。 接著’由於將噴灑形態切換單元2組裝於頭部1 a， 故以將由噴灑切換操作部4的上部開口 4 c突設的公螺紋 部3 e螺合於形成在頭部1 A的母螺紋部1 B，來構成蓮蓬 頭1。前述噴灑切換操作部4是以旋轉軸3爲軸，可旋轉 地安裝於噴灑形態切換單元2。即，旋轉軸3與流通路切 換板6及彈簧1 1是固定於頭部1 A，其他的構件則固定於 噴灑切換操作部4。因此，藉由利用者使噴灑切換操作部 ‘ 4對於頭部1 A旋轉，來使得流通路切換機構部7對於固 定在頭部1 A的流通路切換板6旋轉。藉此，使分別設置 在流通路切換板6及7的通水孔相互重疊、或未相互重疊 來切換流通路。 -23- 1260996 (20) 根據第1 7圖（A ) 、 C B ) 、 （ C )具體說明如此的 噴灑切換之通水孔的重疊狀態。 第1 7圖（A )是顯示在噴嘴單元2 A進行通水使噴嘴 9迴旋，獲得迴旋噴灑的情況時之各通水孔相互重豐的状 態。在圖示的狀態，流通路切換板6的通水孔1 6 a與流通 路切換機構部7的通水孔17a相互重疊’但流通路切換 板6的通水孔1 6b與流通路切換機構部7的通水孔1 7b並 未相互重疊。 · 第1 7圖（B )是顯示由散水板5的散水孔5 a獲得通 常噴灑的情況時之各通水孔相互重疊的狀態。 在此圖的狀態’流通路切換板6的通水孔1 6 b與流通 路切換機構部7的通水孔1 7 b相互重疊’但流通路切換板 6的通水孔1 6 a與流通路切換機構部7的通水孔1 7 a並未 相互重疊。 且，第17圖（C)是顯示第17圖（A)與（B)的切 換途中。當在切換途中形成止水狀態時’靜水壓（自來水 鲁 管的供水壓）會施加於噴淋管與蓮蓬頭’使得在各部不自 然地施加了高水壓。因此，爲了在切換途中不會形成止水 狀態，而將其中一個通水孔1 6b作成長孔狀。藉此’在於 切換途中，因可由雙方的通水孔進行通水’所以可確實地 防止形成止水狀態。 其次，詳細說明關於由噴嘴9噴灑之迴旋噴灑。 流入到蓮蓬頭1的供水口 1 4的冷、熱水通過形成在 蓮蓬頭1內的通水路徑1 5而供給至噴灑形態切換單元2 -24- 1260996 (21) 內。 將此冷、熱水導引至此單元2的旋轉軸3內，使流通 路切換板6的通水孔1 6a與流通路切換機構部7的通水孔 】.7 a連通。然後，使冷、熱水流入至形成在流通路切換機 構部7的隔壁7 a內面與噴嘴盒1 0的外面之間的噴灑水流 室1 8。所流入的冷、熱水由噴灑水流室1 8經由噴嘴盒1 0 的流入口 2 3導引至噴嘴盒1 0的內部，進一步通過噴嘴9 的通水路徑1 3，最終由噴嘴9的噴灑口 1 3 a噴灑至外部 〇 如第1 1圖所示，在於噴嘴盒1 〇的內部，流入口 23 形成使冷、熱水由接線方向（傾斜方向）流入至內部。藉 此，能夠使已被導引至噴嘴盒1 〇內部的冷、熱水容易迴 旋。藉由此迴旋流的水的勢力，噴嘴9以噴嘴導件8的噴 嘴支承部1 2爲軸，一邊擺動旋轉一邊進行噴灑（參照第 1 6圖（B ))。又，藉由將配重部9 a —體地設置在與噴 嘴本體9b的前端部9c之對向的一端部，使得噴嘴9穩定 地迴旋。此時，噴嘴盒1 0內的冷、熱水不僅由噴嘴9的 通水路徑1 3、並且由噴嘴導件8與噴嘴9的間隙2 0沿著 噴嘴9流出。如此之噴嘴9周圍的冷、熱水作爲潤滑劑來 發揮功能，減少了噴嘴盒1 0的噴嘴支承部1 2與噴嘴段部 9 c的磨損，提昇耐久性。 又，由於將噴嘴前端部9 c的直徑形成與間隙2 0部分 的直徑呈大致相同的直徑，故由此間隙2 0所流出的微量 之冷、熱水不會受到旋轉中的噴嘴9之前端部9c所飛散 -25- 1260996 (22) 。此冷、熱水聚集於來自於噴嘴9的噴灑口 1 3 a的噴灑水 而進行散水。 接著，說明關於操作前述噴灑切換操作部4來切換成 通常的噴灑，而由散水板5的散水孔5 a進行噴灑的情況 〇 首先，利用者由選擇著如第2圖所示的迴旋噴灑的狀 態’將噴灑切換操作部4轉動來改變流通路切換機構部7 的位置。於是，流通路切換板6的通水孔1 6b與流通路切 換機橇部7上的通水孔1 7b連通。藉此，冷、熱水通過流 通路切換機構部7的隔壁7a的外面與此周壁內面之間的 噴灑水流室2 1，由散水板5的散水孔5 a朝外部噴灑。 由以上的說明可得知，藉由使噴嘴9迴旋而噴灑的迴 旋噴灑，能夠使利用者獲得適當的間歇感，而獲得理想的 按摩效果。在此，由於將噴嘴的迴旋速度調整過快時則利 用者會感到連續噴灑，故必須調節成適當的旋轉數（迴旋 速度）。 一般，噴嘴9的旋轉數是受到噴灑量、噴嘴重量、形 狀及重心所左右。在利用者淋浴時設定成舒適的噴灑量的 狀態下，而藉由噴嘴9的重量 '形狀或重心位置來決定噴 嘴9的旋轉數。特別是當僅以合成樹脂形成輕量化噴嘴時 ，則噴嘴的旋轉數變得過快’會有無法獲得上述之適當的 間歇感之虞。因此，噴嘴9是以金屬製的構件也就是例如 黃銅·青銅等的合金來形成爲佳。在此情況時，由於可進 行切削加工，故也容易成形旋轉數不同的方式。 -26- l26〇996 (23) 然俊，爲了抑制噴_日$的γ 、 I ^的迴旋速度，而必須將噴嘴（ 成適當的重量。特別皐方丨、；八Γ r 疋在以石成樹脂製的噴嘴9的情況 ^ ’ 如第 1 5 圖（A )所 $ rh — ^ 、，將由舆銅等的金屬部90a插入 已重部9 a的部分，嘻肢匕q十· θ 貝角9本身則使用ABS樹脂或聚丙 寺的合成樹脂材料爲佳。 〜方面，噴嘴導件8的至少噴嘴支承g" 2是以合成 、自曰材料來加以成形的。由於此噴嘴導件8需要強度及滑1260996 (1) Technical Field of the Invention The present invention relates to a spraying device, and more particularly to a spraying device having a shower head that can be sprayed while rotating a nozzle. [Prior Art] The technique disclosed in Japanese Laid-Open Patent Publication No. Hei No. 5 - 1 2 3 6 1 3 is used as a spraying device (rainhead) for spraying a nozzle. The chasing is in the nozzle chamber, and the nozzle tip is adhered to the nozzle receiving portion, and the vane provided in the swirling nozzle is rotated by the water flow to rotate the nozzle, and the rack gear (rack - and - pini ο η) ) The mechanism that causes the nozzle to gyrator in the nozzle chamber. This spraying device is for easily arranging the nozzle, and the rack gear mechanism or the blade is provided at the nozzle. Therefore, the shape of the part is complicated, and the processing cost becomes high. Further, by the nozzle swirling, there is a problem that the nozzle receiving portion is easily worn. Further, Japanese Laid-Open Patent Publication No. SHO-54-127-165 discloses a showerhead for a spray device having a spray switching device that switches the spray pattern. Further, Japanese Patent Publication No. 2 0 0 2 - 5 20 1 5 6 discloses a shower head for a spray device having a swirling nozzle. However, in these shower heads, due to the spray switching mechanism, the three pages are made heavier. Therefore, in the use of the shower head, the user accidentally drops the 3 pages of the shower; in the case of the head, the collision with the ground may cause the -5 - 1260996 (2) to be damaged. In the case where the head of the shower itself is heavy, there is also a hindrance to the circulation of the nozzle. SUMMARY OF THE INVENTION The present invention has been developed in order to solve the above problems, and has an object of providing a spray device capable of swirling and sprayable nozzles, and a 1匕 device capable of simplifying a part structure to suppress processing costs. Achieving an increase in durability, and whether it is in the initial stage of water flow or spraying, stable spraying is always possible, especially for spraying devices sprayed on the human body. In order to solve at least a part of the problem, the spraying device of the present invention is a spray chamber in which an inlet chamber having a cylindrical shape in which cold and hot water flows in, and a nozzle for spraying cold and hot water flowing into the inflow chamber are assembled. The device is characterized in that: ♦ an inflow port is formed in the inflow chamber, so that the cold water flowing into the inflow chamber causes a swirling (water) flow along the inner peripheral wall surface of the inflow chamber. The nozzle has a nozzle body and a diameter The tip end portion of the nozzle body is small, and the nozzle tip end portion faces the outer portion from the opening of the inflow chamber, and the nozzle holder portion supports the nozzle body portion at the end portion of the opening portion of the inflow chamber to swirl the flow so that the nozzle can swing. As a result, cold and hot water flow in from the inflow port to form a swirl. Therefore, when the water is started to flow, the sufficient swirling flow collides with the axial direction of the nozzle. Therefore, the nozzle does not shift in a predetermined direction, and the balance can be balanced and sufficient. Spray over the ground to spray. According to a preferred aspect of the invention, the vertically long inflow port has a vertically long shape in the axial direction of the inflow chamber, and is formed in a wiring direction of the inner peripheral wall surface of the inflow chamber. Thereby, the swirling flow can be uniformly generated along the axial direction of the inflowing chamber, and the force of the cold and hot water flowing in from the inflow port provided in the wiring direction can be maintained, and the swirling flow can be efficiently generated along the inner peripheral wall surface. (Patent No. 3) In a preferred embodiment of the present invention, a switching mechanism for switching other spouts and flow passages is formed upstream of the inflow chamber to form a sprayable water that can be switched from the nozzles and from Spray water is sprayed from the other spouts, and a spray water flow chamber is formed on the upstream side of the inflow port and on the downstream side of the switching mechanism. Thereby, since the flow area of the water flow is changed by the medium switching mechanism, the spray water flow chamber is formed on the downstream side of the switching mechanism and the upstream side of the flow inlet to temporarily store cold and hot water in the spray water flow chamber to suppress the flow of water. After the disturbance, it flows into the inflow port, so that a sufficient swirling flow can be obtained in the inflow chamber (Patent Application No. 4). In a preferred embodiment of the invention, the nozzle is provided with a nozzle body at the other end of the nozzle body. a weight portion having a large outer diameter, and the water passage is formed by the weight portion along the axial direction of the nozzle body and - 7-1260996 (4) - a spray for connecting the water passage is formed at the front end Water nozzle. Therefore, since the swirling component of the swirling flow generated in the inflowing chamber is reduced in the flow passage formed in the axial direction of the nozzle, it is possible to suppress the disturbance of the spray water from the nozzle. Therefore, the forces of cold and hot water can be utilized as components of the spray direction, and the swirling spray water having regularity and disorder can be obtained by the nozzle. (Application No. 5) φ In a preferred embodiment of the invention, the plurality of nozzles provided at the front end portion of the nozzle are formed in plurality. Thereby, since the cold and hot water flowing into the water flow passage are dispersed to the plurality of spray ports, the swirling components of the respective spray ports can be alleviated. Therefore, it is possible to utilize the forces of cold and hot water in the spray direction, and it is possible to obtain a regular and disorder-free swirling spray water from the nozzle. (Patent No. 6 of the patent application) In a preferred embodiment of the invention, a rectifying plate is provided in the flow passage of the nozzle. By this, it is possible to reduce the swirling component, and the cold and hot water can be used in the spray direction, and the nozzle can be obtained from the nozzle. (Application No. 7) In a preferred embodiment of the invention, wherein the nozzle body located in the inflow chamber or 1260996 (6) (Application No. 9) is in an ideal form of the invention, wherein the nozzle is asymmetrical The water pressure of the cold and hot water flowing in the initial stage of the flow of water is applied. In this way, the water pressure is asymmetrically applied to the nozzle by the swirling flow generated by the cold and hot water generated by the initial flow of water flowing from the inflow port, so that the nozzle loses balance and is easily inclined. . Therefore, the nozzle becomes easy to swirl by the initial stage of the flow of water. Specifically, in the present invention, unlike the nozzle having a blade of the prior art, a simple shape in which the nozzle is swirled by the force of the swirling flow is created. However, in the case of such a nozzle, when it is desired to swirl with an equal and uninterrupted swirling flow, since the force of the swirling flow is symmetrically applied to the nozzle, there is a possibility that the nozzle does not swirl in the initial stage of the water flow. . Further, when the tip end portion of the nozzle faces the opening of the inflow chamber from the outside and the nozzle is supported by the nozzle supporting portion of the inflow chamber, the nozzle is easily supported in the vertical (upright state) with respect to the opening. When the water pressure of the cold and hot water flowing in the state of being vertically supported is applied symmetrically to the nozzle, the nozzle is sprayed without being tilted. Therefore, according to the configuration of the present invention, the nozzle can be surely tilted from the initial stage of the water flow to be swirled. (Application No. 10) In a preferred embodiment of the invention, the weight portion has a vertical surface formed on a substantially cylindrical side surface. Therefore, regardless of the direction in which the spraying device is disposed, the swirling flow generated by the cold water and the hot water flowing from the inflow port -10- 1260996 (7) is disturbed on the side surface of the weight portion where the nozzle is cut, and is subjected to the Disorder, the nozzle loses balance and is easy to tilt. Therefore, the nozzle is easily swirled by the stage at the beginning of the flow of the water. Specifically, in the present invention, unlike the nozzle having a blade of the prior art, a simple shape in which the nozzle is swirled by the force of the swirling flow is created. However, when such a nozzle is used, when it is desired to swirl with an equal and uninterrupted swirling flow, since the force of the swirling flow is symmetrically applied to the nozzle, there is a possibility that the nozzle does not swirl in the initial stage of the water flow. . Further, when the tip end portion of the nozzle faces the opening of the inflow chamber from the outside and the nozzle is supported by the nozzle supporting portion of the inflow chamber, the nozzle is easily supported in the vertical (upright state) with respect to the opening. When the water pressure of the cold and hot water flowing in the state of being vertically supported is applied symmetrically to the nozzle, the nozzle is sprayed without being tilted. Therefore, according to the present invention, the side surface of the weight portion is cut to generate a turbulent flow of the swirling flow, and the water pressure applied to the nozzle is unbalanced. As a result, the nozzle can be inclined with respect to the axis of the inflow chamber by the initial flow of the water, so that the nozzle can be smoothly swirled by the swirling flow of the water to be sprayed. (Patent Application No. 11) In a preferred embodiment of the invention, the weight portion is formed by forming a vertical surface with respect to a substantially cylindrical side surface such that opposite sides are formed. Thereby, the nozzles are simultaneously performed: the swirling of the swing in the tilted state, and the rotation of the nozzle itself by the rotation of the nozzle itself. Further, by -11 - 1260996 (8), the swirling flow enters the side of the cut nozzle to apply a force in the opposite direction to the rotation of the nozzle. Therefore, the rotation of the nozzle is suppressed. This is more effective on both sides of the weight portion than forming a side surface to form both sides. (Application No. 12 of the patent application) In a preferred embodiment of the invention, the nozzle is made of metal. Thereby, compared with a lightweight nozzle formed, for example, of a synthetic resin or the like, it is possible to suppress the swirling speed of the nozzle from becoming too fast, and it is possible to rotate at an appropriate speed. In particular, since the side surface of the cutting portion of the nozzle is turbulent, the rotation speed of the nozzle can be suppressed. Therefore, when the user is sprayed on the body of the user, it is possible to impart a feeling of intermittently tapping within a predetermined range, and it is possible to provide a spray feeling that is not provided by the conventional shower nozzle. (Patent Document No. 13) In a preferred embodiment of the invention, the cold and hot water flowing into the chamber are caused to flow out from the gap between the nozzle support portion and the nozzle of the inflow chamber. As a result, cold and hot water flow between the nozzle and the nozzle support portion of the inflow chamber, and the cold and hot water function as a lubricant. Therefore, the wear of the nozzle can be suppressed and the durability can be improved. Further, the gap between the nozzle and the nozzle supporting portion is preferably such that the cold and hot water flowing into the periphery of the nozzle can function as the lubricant. (Patent Application No. 14) In a preferred embodiment of the invention, the cold and hot water flowing out of the gap between the receiving portion and the nozzle by the nozzle branch of the inflow chamber is along the outer surface of the nozzle front end portion Communicate 'spray with spray water from the nozzle of the nozzle. Thereby, the cold and hot water flowing out from around the nozzle can be reduced by the nozzle that is oscillated. In other words, the spray water from the spray device is not disturbed. The cold and hot water flowing around the nozzle can be collected by spraying the cold and hot water sprayed from the spray port. According to a preferred aspect of the invention, the tip end portion of the nozzle is a nozzle diameter that is located at an opening of the inflow chamber, and the diameter of the tip end is formed to be substantially equal to or smaller than a diameter. By forming the nozzle tip end portion in the above-described shape, cold and hot water flowing out from around the nozzle are easily transmitted to the tip end portion of the nozzle, so that scattering toward the surroundings can be reduced. Further, the spray device can be assembled only by attaching the nozzle from the inside of the inflow chamber. According to a preferred aspect of the invention, the nozzle is configured to have a front end portion having a spout at one end portion of the substantially cylindrical nozzle body and a nozzle body portion at the other end portion. When the weight portion having a large outer diameter is integrally formed, the weight portion forms one water flow passage ' along the axial direction of the nozzle body and a plurality of spray ports are formed at the front end portion. · Thereby, since the swirling component of the swirling flow generated in the inflowing chamber is alleviated in the water passing path formed along the axial direction of the nozzle, and the water flow fraction -13 - 1260996 (10) is scattered in the plurality of spouts, Therefore, it is possible to rectify the spray water from the nozzle. (Purchase No. 7) In a preferred embodiment of the invention, the nozzle is made of a synthetic resin member made of metal or a metal portion. The nozzle support portion is made of synthetic resin. Thereby, the nozzle forms an appropriate weight, and the rotation speed can be suppressed within a range of an appropriate number of rotations. In other words, when all the members of the nozzle are formed into a synthetic resin, the amount of rotation of the nozzle is too high, and the number of revolutions of the nozzle is too high. Therefore, in the present invention, it is possible to obtain a feeling of intermittentness on the swirling spray water by suppressing the number of rotations of the nozzle. Further, by forming the nozzle with a material different from the nozzle support portion, the friction can be reduced. (Patent Application No. 18) In a preferred embodiment of the invention, the front end portion of the nozzle is formed so as not to expose the outer surface of the spray device. Thereby, even when the user accidentally drops the spray device, the impact on the nozzle can be alleviated because the nozzle or the like does not directly hit the floor or the like. (Patent No. 19 of the patent application) In a preferred embodiment of the invention, wherein - 14 - 1260996 (11) is formed upstream of the inflow chamber for switching the switching mechanism of the other nozzle and the sinking passage to form a switchable source Sprinkle water from the nozzle spray water and other spray ports. In this way, depending on the user's preference, it is possible to select not only the spray pattern that the nozzle is swirled to spray, but also other spray patterns. For example, in the case of applying to a shower head for a bathroom, it is possible to switch to a shower with intermittent feeling formed by the swirling of the nozzle, a usual spray shower or a foam shower, and the like to enjoy the shower. (Patent No. 20 of the patent application) In a preferred embodiment of the invention, the switching mechanism is a rotating shaft fixed to at least a periphery of the spraying device and a flow path switching plate that is locked to the rotating shaft; The spray switching operation portion that is rotatably provided around the periphery of the spray device and the flow path switching mechanism portion that rotates in conjunction with the spray switching operation portion are formed in the inner peripheral portion of the flow path switching plate and the flow path switching mechanism portion. A water-passing hole is formed in each of the outer peripheral portions, and the water-spraying hole of the inner peripheral portion of the fixed flow path switching plate is communicated with the water-passing hole of the inner peripheral portion of the flow path switching mechanism portion by rotating the spray switching operation portion. Or, the water passage hole of the outer peripheral portion of the flow path switching plate that has been fixed is communicated with the water passage hole of the outer peripheral portion of the flow path switching mechanism portion to switch the spray, and the yellowing is set between the fixed shaft and the flow path switching plate. By the elastic force of the spring, the flow path switching plate abuts against the flow path switching mechanism portion, and the spring force of the spring faces the spray pattern switching unit away from the periphery of the spray device Biasing. Thereby, even if the spray device (for example, the shower head) is dropped, for example, even if the spray pattern switching unit or the shower head body -15-1260996 (12) collides with the floor, the weight can be used by the spring. The elasticity is used to absorb the sputum, thereby preventing the shower head from being damaged. (Patent Application No. 2) In a preferred embodiment of the invention, wherein one of the aforementioned spray patterns has a spray pattern sprayed by a swirling nozzle, the nozzle unit for generating the spray pattern is disposed in the flow path The switching mechanism unit is configured by a nozzle for supplying cold and hot water into the inflow chamber, and a nozzle for spraying cold and hot water flowing into the inflow chamber, and an inflow port is formed in the inflow chamber to flow into the inflow chamber. The cold and hot water cause a swirling flow along the inner peripheral wall surface of the inflow chamber, and the nozzle has a front end portion having a nozzle body and a smaller diameter than the nozzle body, such that the front end portion faces the outside by the opening portion of the inflow chamber, and the front end of the nozzle The portion is formed so as not to expose the outside of the spray device, and the nozzle body is supported by the nozzle support portion that has flowed into the chamber, and the nozzle is rotated while swirling. Therefore, the spray device (for example, the shower head) having the swirling nozzle "because the front end of the nozzle is not exposed to the outside of the shower head, even if the user accidentally drops the shower head, there is no conflict between the nozzle itself and the floor. Hey. Therefore, deformation or breakage of the nozzle can be effectively prevented. [Embodiment] Hereinafter, the present invention will be described more specifically with reference to the drawings. Figs. 1 to 3 show an embodiment in which the spray device of the present invention is applied to the shower head 1. Fig. 1 shows a cross-sectional view of the whole, and Figs. 2 and 3 respectively -16 - 1260996 (13) show an enlarged cross-sectional view of the head ία at the time of spraying and the swirling spray from the nozzle. This shower head 1 is used to sprinkle the body in a bathroom or shower room. Further, the shower head 1 is connected to a shower pipe which is branched by a combination of cold and hot water mixing water (not shown). This spraying device is located in the head portion 1A of the shower head 1, and is provided with a spray pattern switching unit 2 having a nozzle 9 for spraying while swirling. The spray pattern switching unit 2 includes a rotating shaft 3, a spray switching operation unit 4, a water diffusing plate 5, a nozzle guide 8, and a nozzle 9, and includes a flow path switching plate 6' flow path switching mechanism unit 7 and a nozzle unit 2a ( Nozzle box 1 , etc.) and spring 1 1 . Further, although not shown, a circular ring or a spacer is used in a portion that is held in a watertight manner. Next, the respective constituent elements of the spray pattern switching unit 2 will be specifically described. First, as shown in Fig. 4(B), the rotating shaft 3 has a substantially disk shape. Here, a cylindrical male screw portion 3e is protruded from the center of the substantially disk shape. Further, on the inner side of the male screw portion 3 e, there is provided a projection 3 b which is tapered toward the upstream side. The projection 3b is coupled to the inner wall of the male screw portion 3e via three flat portions 3d extending in a radial shape. The gap between these guide portions 3d forms a flow passage 3c. Further, by making the projection 3b tapered, the cold and hot water flowing in through the water passage 15 can be smoothly supplied to the spray pattern switching unit 2 through the flow passage 3c. Similarly, as shown in FIG. 4(B), the spray switching operation unit 4 is formed in a substantially bowl-shaped tubular shape in which the upper and lower sides are opened upside down. And assembled into this -17 - 1260996 (15) when sprinkling does not produce a water stop state ◦ in this regard, as detailed below. As shown in Fig. 6, the flow path switching mechanism unit 7 has a cylindrical shape in which the inner wall does not have a bottom surface provided integrally with the partition wall 7a. The upper surface 7b' of the flow path switching mechanism unit 7 is provided with a water-passing hole 17b for passing water through the water hole 17a and a water-passing hole 17b. Further, a spray water flow chamber 2 1 is formed between the outer peripheral wall of the flow path switching mechanism portion 7 and the partition wall 7a. In the spraying device in which the two inflow ports 2 3 are formed, the amount of water flowing into the water flowing chamber 2 1 to 2 3 / is completely different at the initial water passing. Therefore, the water pressure of the water that has flowed in is applied asymmetrically to the bite 9. Thereby, the nozzle 9 is out of balance and the valley is easy to tilt. Then, after a certain period of time, the spray water flow chamber 2 1 is in a full water state. The amount of water flowing from the two inlets 23 is also almost the same. Thereby, a swirling flow having a good balance in the inflow chamber can be used to continuously and stably swirl the nozzle 9. The nozzle unit 2A is constructed by combining the nozzle box 1 〇, the nozzle 9 and the nozzle guide 8 as shown in Fig. 7. The inflow chamber is formed by overlapping the nozzle box 10 with the nozzle guide 8. Then, the chamber is accommodated in the nozzle 9, and the front end portion 9c of the nozzle is faced by the opening 8a of the nozzle guide 8 (refer to Fig. 2) facing the outside of the inflow chamber. The nozzle box 1 has a substantially cylindrical shape without a bottom surface as shown in Figs. 8 to 10, and has two thin vertical inlets 2 3 which are point-symmetrical with respect to the central axis on the side surface. This inflow port 2 3 is formed in the wiring direction with respect to the inner circumferential surface of the nozzle box 10 as shown in Fig. 1 . The cold and hot water which flows into the nozzle box 1 through the inlet 2 3 as shown in Fig. 1 is swirled in the nozzle unit -19-1260996 (16) 2 A. In particular, since the inflow port 2 is formed into a thin longitudinal shape substantially parallel to the axis of the nozzle unit 2A, a more uniform swirling flow is easily generated for the shaft. Further, since the water is smoothly flowed into the inner peripheral surface by the inflow port 2 3 and then swirled, the pressure loss can be effectively suppressed. Further, if the inflow port 2 3 is a structure capable of swirling water, the shape, the number, the installation position, and the like are not limited. For example, the inflow port 2 3 may be formed in a direction inclined to the side or the upper direction in a direction other than the wiring direction. Further, as shown in Fig. 12, it may be one inflow port 2 3 . As shown in Fig. 3, the nozzle 9 is extended to a substantially cylindrical nozzle body 9b before the diameter of the nozzle body 9b is smaller, and the other end portion is extended to a larger diameter than the nozzle body 9b. The heavy portion 9a is integrally formed. Then, as shown in Fig. 13(D), a water passage 13 is formed which penetrates in the axial direction of the nozzle 9. The water passage 13 is as shown in Fig. 3(B), at the nozzle 9. The front end portion 9c is branched into four spray ports 1 3 a along the axial direction. Furthermore, if the number of the spouts 1 3 is plural, the number is not limited. Thus, by providing the water passage 13 (in the case of the rim 1 3 a ) along the axial direction of the nozzle 9 , the swirling component of the swirling flow generated in the nozzle unit 2 A can be made to flow through the nozzle 9 . 1 3 (spray port 1 3 a ) is relieved. Furthermore, it is also possible to reduce the swirling component of the swirling flow by the $虞 rectifying plate 9 1 a in the water passing path 1 3 as shown in Fig. 14. Further, as shown in Figs. 1 (3) and (D), a hole 1 3 b is formed in a side portion of the weight portion 9 a of the nozzle 9 . By causing the initial flow of water to flow into the hole 3b, the nozzle 9 is easily inclined in the oblique direction, and the rotation of the nozzle 9 can be easily started. The hole 1 3b can be formed in the water passage -20- 1260996 (17) The sides of the opposite sides of the diameter 1 3 make it easier to start the swirling of the sneezing angle 9. This hole 13b can also be formed at the side of the nozzle body 9b. As shown in Fig. 5(C), the tip end portion 9c of the nozzle 9 is formed to have a smaller diameter toward the tip end, for example, from the nozzle body 9b side. Thereby, the cold and hot water flowing out from the gap between the nozzle 9 and the nozzle support portion 12 are transmitted to the tip end portion 9c' to be concentrated on the spray water from the spray port 13a. In particular, as shown in Fig. 15(B), since the spiral groove 90c is formed at the nozzle tip end portion 9c, the gap between the nozzle 9 and the nozzle support portion 12 is caused by the spiral groove 90c. The cold and hot water that flows out are indeed conveyed. Further, as shown in Fig. 15(b), the weight portion 9a of the nozzle 9 can be formed to be eccentric to the shaft, so that the nozzle 9 can be easily inclined. In this case, it is preferable that eccentricity is applied to the extent that the shower head 1 does not generate a large vibration when the nozzle 9 is rotated. Further, the shower head 1 is often used in a state in which the head 1 A faces the oblique direction (see Fig. 1). For example, many of them are used in a state where they are held by a spray hook (not shown) or when the user lifts the hand upward to hold the shower head 1. Therefore, the nozzle 9 disposed in the head portion 1 A also forms a state of being inclined in the oblique direction. However, as described above, since the hole 13b is provided in the weight portion 9a of the nozzle 9, even if the shower head 1 is disposed in any direction or angle, the initial swirling start of the nozzle 9 can be easily caused. . As shown in Fig. 16, the nozzle guide 8 is provided at its center portion with an opening 8a in which only the tip end portion 9C of the nozzle 9 protrudes. The nozzle guide 8 is a nozzle - 2160996 (13) nozzle support portion 1 2 provided with a part of the nozzle rear portion 9d for the end portion of the nozzle body 9b. Thereby, the nozzle 9 is supported while being inclined to the nozzle support portion 12, and swings back and forth. Further, a concave portion 8c is formed in the portion 8b of the nozzle guide 8, and the i-portion 9c of the nozzle 9 is swirled in the concave portion 8c. That is, as shown in Figs. 2 and 3, the tip end of the spout 1 3 a formed at the lower end portion of the water passage path 13 of the nozzle 9 is not exposed to the lower surface of the nozzle guide 8. Therefore, even when the user accidentally drops the shower head 1, the nozzle 9 does not directly collide with the floor, so that the impact can be alleviated and the damage can be prevented. Further, the spring 11 embedded in the rotating shaft 3 can also achieve the effect of absorbing the impact caused by the drop. The outer portion of the weight portion 9a constituting the nozzle 9 is formed to have a larger inner diameter than the insertion portion 8d of the nozzle guide 8 which is inserted into the nozzle 9 side. Therefore, when the user accidentally drops the shower head 1 so that the front end portion 8b of the nozzle guide 8 is broken, the nozzle 9 is not dropped by the nozzle guide 8. Next, a description will be given of a specific assembling method of the spray pattern switching unit 2. First, the rotating shaft 3 is positioned in conjunction with the rotating shaft 3, and the flow path switching plate 6 is fitted to the rotating shaft 3. That is, the 肷 5 pieces 6 a of the flow path switching plate 6 are attached to the guide portion 3 ^ of the rotary shaft 3 to be fixed. Further, the spring 11 is attached to the inner space of the projection 3d of the rotary shaft 3 (see Figs. 2 and 3). By the spring force of the spring cymbal 1 and the water pressure of the water flowing therethrough, the fitting piece 6a of the flow path switching plate 6 abuts against the circular ring of the flow path switching mechanism portion 7, and the watertightness is maintained. -22 - 1260996 (19) Then, the male screw portion 3 e of the rotary shaft 3 in which the flow path switching plate 6 is fitted is inserted into the openings 4d and 4c of the spray switching operation portion 4 to be assembled (see step 4). Figure). Further, after the rotating shaft 3 is assembled to the spray switching operation portion 4, the flow path switching plate 6 may be assembled to the rotating shaft 3. Then, in the state in which the flow path switching mechanism unit 7 is positioned in conjunction with the spray switching operation d 4 , it is fitted into the spray switching operation unit 4 . Then, the nozzle unit 2A is fitted inside the partition wall 7a of the flow path switching mechanism unit 7. Further, the water-spraying plate 5 is screwed to the inner side of the end portion of the spray switching operation portion 4 by the screw portion 5c of the water-spraying plate 5. Thereby, not only the tip end portions of the nozzle guide 8 and the nozzle 9 can be protruded from the opening portion 5b of the water-spraying plate 5, but also the inside of the operation portion 4 can be sprayed by the water-spraying plate 5 (see Figs. 2 and 3). Then, since the spray pattern switching unit 2 is assembled to the head portion 1a, the male screw portion 3e protruding from the upper opening 4c of the spray switching operation portion 4 is screwed to the female thread portion formed on the head portion 1A. 1 B, to form the shower head 1. The spray switching operation unit 4 is rotatably attached to the spray pattern switching unit 2 with the rotating shaft 3 as an axis. That is, the rotating shaft 3, the flow path switching plate 6 and the spring 1 1 are fixed to the head portion 1 A, and the other members are fixed to the spray switching operation portion 4. Therefore, the user switches the flow path switching mechanism portion 7 to rotate the flow path switching plate 6 fixed to the head portion 1A by the user rotating the spray switching operation portion '4' with respect to the head portion 1A. Thereby, the water passage holes provided in the flow path switching plates 6 and 7 are overlapped with each other or are not overlapped with each other to switch the flow path. -23- 1260996 (20) The overlapping state of the water-passing holes for such spray switching is specifically described based on Fig. 17 (A), C B ) and (C). Fig. 17 (A) shows a state in which the water passing holes of the nozzle unit 2 A are made to pass through the water to swirl the nozzle 9 and the swirling spray is obtained. In the illustrated state, the water passing hole 16a of the flow path switching plate 6 overlaps with the water passing hole 17a of the flow path switching mechanism portion 7, but the water passing hole 16b of the flow path switching plate 6 and the flow path switching mechanism The water passing holes 17b of the portion 7 do not overlap each other. Fig. 17(B) shows a state in which the respective water passing holes overlap each other when the water is sprayed from the water sprinkling hole 5a of the water sprinkling plate 5. In the state of the figure, the water passing hole 16b of the flow path switching plate 6 overlaps with the water passing hole 17b of the flow path switching mechanism portion 7, but the water passing hole 16a of the flow path switching plate 6 flows and flows. The water passage holes 17a of the road switching mechanism portion 7 do not overlap each other. Further, Fig. 17(C) shows the middle of the switching in the seventeenth (A) and (B). When the water stop state is formed during the switching, the hydrostatic pressure (the water supply pressure of the tap water pipe) is applied to the shower pipe and the shower head so that high water pressure is not naturally applied to each portion. Therefore, in order to prevent the water stop state from being formed during the switching, one of the water passing holes 16b is formed into a growth hole shape. Therefore, it is possible to reliably prevent the formation of the water stop state by the fact that water can be supplied through the water passing holes of both sides during the switching. Next, the swirling spray sprayed by the nozzle 9 will be described in detail. The cold and hot water flowing into the water supply port 14 of the shower head 1 are supplied to the spray pattern switching unit 2-24- 1260996 (21) through the water passage 15 formed in the shower head 1. The cold and hot water are guided into the rotary shaft 3 of the unit 2, and the water passage hole 16a of the flow path switching plate 6 is communicated with the water passage hole 7.7a of the flow path switching mechanism portion 7. Then, cold and hot water are caused to flow into the spray water flow chamber 18 formed between the inner surface of the partition wall 7a of the flow path switching mechanism portion 7 and the outer surface of the nozzle box 10. The inflowing cold and hot water is guided by the spray water flow chamber 18 through the inflow port 23 of the nozzle box 10 to the inside of the nozzle box 10, further through the water passage path 13 of the nozzle 9, and finally sprayed by the nozzle 9. The port 13 3 is sprayed to the outside. As shown in Fig. 1, the inside of the nozzle box 1 is formed, and the inflow port 23 is formed so that cold and hot water flow into the inside from the wiring direction (inclined direction). Thereby, the cold and hot water which have been guided to the inside of the nozzle box 1 can be easily revolved. By the force of the swirling water, the nozzle 9 is sprayed while the nozzle support portion 12 of the nozzle guide 8 is pivoted (see Fig. 16(B)). Further, by providing the weight portion 9a integrally at one end portion opposed to the front end portion 9c of the nozzle body 9b, the nozzle 9 is stably swirled. At this time, the cold and hot water in the nozzle box 10 flow not only from the water passage 13 of the nozzle 9, but also from the gap 20 of the nozzle guide 8 and the nozzle 9 along the nozzle 9. The cold and hot water around the nozzle 9 function as a lubricant, and the wear of the nozzle support portion 1 2 and the nozzle segment portion 9 c of the nozzle box 10 is reduced, and the durability is improved. Further, since the diameter of the nozzle tip end portion 9c is substantially the same as the diameter of the gap 20 portion, a small amount of cold and hot water flowing out from the gap 20 is not received by the front end of the nozzle 9 in rotation. Part 9c is scattered -25- 1260996 (22). This cold and hot water is collected by spraying water from the spout 1 3 a of the nozzle 9 to disperse water. Next, a description will be given of a case where the spray switching operation portion 4 is operated to switch to a normal spray, and the spray is performed by the water spray hole 5a of the water sprinkling plate 5. First, the user selects the swirling spray as shown in Fig. 2 The state 'rotates the spray switching operation portion 4 to change the position of the flow path switching mechanism portion 7. Then, the water passing hole 16b of the flow path switching plate 6 communicates with the water passing hole 17b on the flow path switch sled portion 7. Thereby, the cold water and the hot water are sprayed to the outside by the water spray hole 5a between the outer surface of the partition wall 7a of the flow path switching mechanism portion 7 and the inner surface of the peripheral wall. As apparent from the above description, the swirling spray by spraying the nozzle 9 allows the user to obtain an appropriate intermittent feeling, thereby obtaining an ideal massage effect. Here, since the user feels continuous spraying when the swirl speed of the nozzle is adjusted too fast, it is necessary to adjust the number of rotations (rotation speed). Generally, the number of rotations of the nozzle 9 is affected by the amount of spray, the weight of the nozzle, the shape, and the center of gravity. The number of rotations of the nozzle 9 is determined by the weight 'shape or center of gravity position of the nozzle 9 in a state in which the user sets a comfortable amount of spray when showering. In particular, when the lightweight nozzle is formed only of synthetic resin, the number of rotations of the nozzle becomes too fast, and the above-described appropriate intermittent feeling cannot be obtained. Therefore, it is preferable that the nozzle 9 is formed of a metal member such as an alloy such as brass or bronze. In this case, since the cutting process can be performed, it is easy to form a form in which the number of rotations is different. -26- l26〇996 (23) Ran Jun, in order to suppress the gyro velocity of γ and I ^ of the spray_day $, the nozzle must be placed (to the appropriate weight. Specially, the square 丨, 八Γ r 疋在石成In the case of the nozzle 9 made of resin, as in the case of $ rh — ^ in Fig. 15 (A), the metal portion 90a such as beryllium copper is inserted into the portion of the heavy portion 9a, and the 嘻 匕 q · θ 角 angle 9 itself is preferably made of ABS resin or a synthetic resin material of Polypropylene Temple. On the other hand, at least the nozzle support g" of the nozzle guide 8 is formed by synthesizing and self-twisting materials. Since the nozzle guide 8 requires strength And slip
動性’故使用合成樹脂材料中可確保較強的強帛、滑動性 之例如聚縮醛類等爲佳。 在本貫施例’箱由以具有重量的金屬製成噴嘴9，能 夠增加噴嘴9的旋轉力。且，能夠藉由不同的材料形成噴 嘴9與噴嘴支承部12，能夠減低摩擦。It is preferable to use a synthetic resin material to ensure strong enthalpy and slidability such as polyacetal. In the present embodiment, the case is made of a nozzle 9 made of metal having a weight, and the rotational force of the nozzle 9 can be increased. Further, the nozzle 9 and the nozzle support portion 12 can be formed of different materials, and friction can be reduced.
如第1 9圖所示’以在大致呈圓柱狀的配重部9a的側 部的對稱位置形成—對垂直面1 3 c、丨3 c，使得噴嘴9 〇 〇 旋轉時變得容易承受通水的流體阻抗。藉此，藉由初期的 通水’可使得噴嘴9容易變得傾斜，容易促進噴嘴9開始 迴旋。再者，垂直面1 3 c的數量、位置、大小（寬度或長 度）、角度或形狀等可適宜變更。 爹照第1 9圖說明通水於具備此噴嘴9 0 0的噴灑裝置 的情況時之噴嘴9 0 0的動作。 如第1 9圖（A )所示，藉由在噴嘴9 0 0的周圍所產 生的迴旋流X，噴嘴9 0 0朝與X相同方向旋轉。此時，迴 旋流X的一部分分歧，在前述垂直面1 3 c的附近形成亂流 Y。當受到前述迴旋流X與亂流γ使水平方向的力量施加 -27- 1260996 (24) 於配重部9 a時，則噴嘴本體9 b變得無法支承配重部9 a ，噴嘴9 0 0如第1 9圖（B )所示，變成傾斜。在此狀態下 ，進一步持續進行通水時，則在噴嘴 9 0 0，於已經傾斜的 狀態下，同時進行以軸a 1爲中心使配重部9 a擺動的迴旋 R1、與隨著此迴旋R1對噴嘴90 0的軸a2旋轉之自轉R2 〇 一方面，如第19圖（A)所示，藉由在配重部9a的 垂直面1 3 c產生的亂流Y進入至垂直面1 3 c的附近，來產 生與迴旋流 X相反之水平方向的力量。藉由此相反方向 的力量，使得與自轉R2相反方向的力量（R3 )施加於噴 嘴90 0。藉此，可抑制噴嘴9 0 0的迴旋R1與自轉R2的旋 轉速度。 —般，在連蓬頭1所使用的流量爲3〜1 0 L /分左右， 在以此流量進行利用者直接感到噴灑變動之對於人體噴灑 的情況時，將噴嘴的迴旋述設定於1 〇〇〇〜2000rpin，更理 想爲1 200〜1 8 0 0 rpm。若根據本案申請人的實驗資料，在 於採用前述噴嘴9 0 0的噴灑裝置，能夠將噴嘴的旋轉數（ 速度）抑制於1200rpm〜1800rpm。 本發明並不限於上述實施例，亦可應用於各種的噴灑 裝置，不僅使用於蓮蓬頭1 ’亦可使用於例如廚房用水龍 L、洗臉台用水龍頭、衛生洗淨裝置的噴嘴等之收集的噴 —裝置（包括拉出自如式噴灑裝置）。 〔產業上的利用可能性〕 -28 - 1260996 (25) 藉由以上的結構，在具備一邊迴旋一邊噴灑的噴嘴之 噴灑裝置，可將零件形狀作成簡單而抑制加工費，並且可 提升通水初期的迴旋流使噴嘴容易迴旋，進一步當由噴嘴 進行噴灑時，可減輕迴旋流的迴旋成分來進行噴灑。 【圖式簡單說明】 第1圖是本發明的實施形態之噴灑裝置的斷面圖。 第2圖是噴灑裝置之噴灑切換單元的斷面圖，顯示選 擇了來自散水板的通水孔之通常的噴灑的狀態。 第3屬是噴灑切換單元的斷面圖，顯示選擇了由噴嘴 噴灑的迴旋噴灑的狀態。 第4圖是顯示旋轉軸及噴灑切換操作部的圖，（A ) 爲已組裝的狀態之示意平面圖、（B )爲分別切削了旋轉 軸及噴灑切換操作部的各自一部分之分解斜視圖。 第5圖是流通路切換板的槪略平面圖。 第6圖是流通路切換機構部的槪略平面圖。 第7圖是顯示噴嘴單元的組裝方法的分解斜視圖。 第8圖是噴嘴盒的斜視圖。 第9圖是噴嘴盒的側面圖。 第1 〇圖是沿著第9圖的A-A線的噴嘴盒的斷面圖。 第1 1圖是顯示噴嘴盒內的通水之流動的示意圖。 第1 2圖是顯示噴嘴盒的變形例之與第1 1圖對應的示 意圖。 第1 3圖（A )〜（D )是顯示噴嘴的平面圖、底面圖 -29- 1260996 (27) 3 ’·旋轉軸 3 a :凸部 3 b :突部 3 c :流通路 3d :導引部 3 e :公螺紋部 4 :噴灑切換操作部 4a :凹部 4b :下部開口 4 c :上部開口 5 :散水板 5 a :散水孔 5 b :開口部 5 c :螺絲部 6 :流通路切換板 6 a :嵌合片 7 :流通路切換機構部 7 a :隔壁 8 :噴嘴導件 8a :開口 8 b :前端部 8 c :凹部 8 d :插入部 9 :噴嘴 -31 - 1260996 (28) 9 a :配重部 9 b :噴嘴本體 9 c :前端部 1 〇 :噴嘴盒 1 1 :彈簧 1 2 :噴嘴支承部 1 3 :通水路徑 1 3 a :噴灑口 13b :孔 1 3 c : 垂直面 1 5 :通水路 1 6 a :通水孔 16b :通水孔 1 7 a :通水孔 17b :通水孔 2 0 :間隙 2 1 :噴灑水流室 2 3 :流入口 9 〇 a :金屬部 9 0 0 :噴嘴As shown in Fig. 19, 'the symmetrical position of the side portion of the substantially cylindrical weight portion 9a is formed-to the vertical faces 1 3 c, 丨 3 c, so that the nozzle 9 容易 becomes easy to withstand when rotated The fluid impedance of water. Thereby, the nozzle 9 can be easily inclined by the initial water passing, and it is easy to promote the swirling of the nozzle 9. Further, the number, position, size (width or length), angle or shape of the vertical surface 1 3 c may be appropriately changed. The operation of the nozzle 900 in the case of a water spray device having the nozzle 900 is described with reference to Fig. 19. As shown in Fig. 19(A), the nozzle 90 is rotated in the same direction as X by the swirling flow X generated around the nozzle 90. At this time, a part of the swirling flow X is divided, and a turbulent flow Y is formed in the vicinity of the vertical surface 1 3 c. When the swirling flow X and the turbulent flow γ are applied to the horizontal force by -27-1260996 (24) to the weight portion 9a, the nozzle body 9b becomes unable to support the weight portion 9a, and the nozzle 9 0 0 As shown in Fig. 19 (B), it becomes inclined. In this state, when the water is continuously supplied, the swirling R1 which swings the weight portion 9a around the axis a1 and the maneuver with the same are performed simultaneously in the state where the nozzle 90 is already tilted. On the one hand, R1 rotates the rotation axis R2 of the axis a2 of the nozzle 90 0. As shown in Fig. 19(A), the turbulent flow Y generated at the vertical surface 1 3 c of the weight portion 9a enters the vertical plane 1 3 In the vicinity of c, the force in the horizontal direction opposite to the swirling flow X is generated. By the force in the opposite direction, the force (R3) in the opposite direction to the rotation R2 is applied to the nozzle 90 0. Thereby, the rotation speed of the swirl R1 of the nozzle 90 and the rotation R2 can be suppressed. In general, the flow rate used in the head 1 is about 3 to 10 L / min. When the user directly feels the spray fluctuation for the human body spray at this flow rate, the nozzle is set to 1 〇. 〇〇~2000rpin, more ideally 1 200~1 800 rpm. According to the experimental data of the applicant of the present invention, the number of rotations (speed) of the nozzle can be suppressed to 1200 rpm to 1800 rpm in the spraying device using the nozzle 90 described above. The present invention is not limited to the above embodiment, and can be applied to various spray devices, and can be used not only for the shower head 1 ' but also for, for example, the spray of the kitchen water dragon L, the washbasin faucet, the nozzle of the sanitary washing device, and the like. - Devices (including pull-out free sprayers). [Industrial Applicability] -28 - 1260996 (25) With the above configuration, the spray device having the nozzle that is sprayed while swirling can simplify the shape of the part and suppress the processing cost, and can improve the initial flow of water. The swirling flow makes the nozzle easy to swirl, and further, when sprayed by the nozzle, the swirling component of the swirling flow can be alleviated for spraying. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a spray device according to an embodiment of the present invention. Fig. 2 is a cross-sectional view showing the spray switching unit of the spray device, showing the state of the usual spraying of the water passing holes from the water sprinkling plate. The third genus is a cross-sectional view of the spray switching unit, showing the state in which the swirling spray sprayed by the nozzle is selected. Fig. 4 is a view showing a rotary shaft and a spray switching operation portion, wherein (A) is a schematic plan view showing an assembled state, and (B) is an exploded perspective view showing a part of each of the rotary shaft and the spray switching operation portion. Fig. 5 is a schematic plan view of the flow path switching plate. Fig. 6 is a schematic plan view of the flow path switching mechanism unit. Fig. 7 is an exploded perspective view showing the assembling method of the nozzle unit. Figure 8 is a perspective view of the nozzle box. Figure 9 is a side view of the nozzle box. The first drawing is a cross-sectional view of the nozzle box taken along the line A-A of Fig. 9. Fig. 1 is a schematic view showing the flow of water in the nozzle box. Fig. 12 is a view showing a modification of the nozzle cartridge corresponding to Fig. 1 . Fig. 1 (3) to (D) are plan views and bottom views of the display nozzles. -29- 1260996 (27) 3 '·Rotary shaft 3 a : convex portion 3 b : projection 3 c : flow passage 3d : guide Part 3 e : male thread portion 4 : spray switching operation portion 4 a : recess portion 4 b : lower opening 4 c : upper opening 5 : water-spreading plate 5 a : water-spraying hole 5 b : opening portion 5 c : screw portion 6 : flow path switching plate 6 a : fitting piece 7 : flow path switching mechanism portion 7 a : partition wall 8 : nozzle guide 8 a : opening 8 b : front end portion 8 c : recess portion 8 d : insertion portion 9 : nozzle - 31 - 1260996 (28) 9 a : weight portion 9 b : nozzle body 9 c : front end portion 1 〇: nozzle box 1 1 : spring 1 2 : nozzle support portion 1 3 : water passage path 1 3 a : spray port 13b: hole 1 3 c : vertical Surface 1 5 : Water passage 1 6 a : Water passage hole 16b : Water passage hole 1 7 a : Water passage hole 17b : Water passage hole 2 0 : Clearance 2 1 : Spray water flow chamber 2 3 : Flow inlet 9 〇a : Metal Department 9 0 0 : Nozzle