自动收线机构设计资料

1、.自動收線機構設計資料(Data of cordreel )收線基本原理.收線機構的主要方式1.2.3.4.內部幾構介紹 排線方式比較 鎖定及收線機構 限速機構三.UL規格電源線的自動收線機構1.2.3.4.電源線規格 安規要求 有關專利 空間要求四JQA規格電源線的自動收線機構1.2.3.4.電源線規格 安規要求 有關專利 空間要求五.其他收線方式收線基本原理1.自動收線原理：自動收線機構是利用平面渦旋簧的儲能、釋能及棘輪 機構的單向鎖定進 行收放線。將電源線拉出時，平面渦 旋簧儲能，停止拉出時，轉軸在渦旋簧作用下迴轉至被棘 輪機構鎖定，電源線停止動作；收線時利用按鈕或其他方 式，打開鎖定機

2、構，使平面渦旋簧的儲能釋放，帶動轉軸 將電源線纏繞收回。2. 用途：自動收線機構應用在熨斗和其它家電產品上的主要目 的，是在使用完畢後，將電源線收納起來，便于存放。3.適用的電源線：自動收線機構的電源線主要為兩線（不帶地線）的橡膠 線，目前有日本市場JQA規格的電源線及美國市場UL規 格的電源線，歐洲市場TU V規格的棉紗線由于受卷線空間 及表層抗摩強度的限制，目前尚未有自動收線的應用。- 1、收線機構的主要方式1 內 部 機 構 介 紹 ：下 面以 7301 為 例闡 述自 動收線裝 置的 內部機構 首先由後蓋和中介蓋板組成收線的空間及中介蓋板提供收 線的旋轉軸。在旋轉軸的前端安裝有大、小滑

3、電環。此兩個滑電環的作 用是將電源線與熨斗的內配線連通。在旋轉軸上有可以旋轉的前、 後卷線筒。 在前後卷線筒之 間有電源線。前後卷線筒靠三顆螺釘鎖附在一起，同時將電源 線壓緊。 電源線的兩極分別與固定在前卷線筒上的大、 小彈片 點焊在一起。 大小彈片的端頭部各有兩銀觸點與其點焊在一 起。 大小彈片可以與前卷線筒一起圍繞著旋轉軸轉動。 大小彈 片通過銀觸點在大小滑電環上滑動， 從而使電源線與熨斗的內 配線導通。 銀觸點起的作用是減少磨損， 保證良好的接觸， 防 止電路導通時在大小彈片與大小滑電環之間有弧光放電， 確保 大小彈片不會與大小滑電環因少許的弧光放電就粘焊在一起。 為了進一步減輕銀觸點的

4、磨損， 在銀觸點與大小滑電環之間涂 有節點油。在後卷線筒的候部安裝有收線的平面渦旋簧。 它的一端與 後卷線筒相聯， 另一端與中介蓋板上的槽相聯。 這樣當電源線 向外拉出時， 渦旋簧就會儲能。 在後卷線筒上裝有壓緊板以防 止渦旋簧在上預緊力時會彈出而增加不安全因素。在前端由按鈕、 釋放彈簧、 鎖定片、 前卷線筒上的棘輪組 成收線的釋放機構。 當按鈕按下時， 鎖定片會釋放前卷線筒上 的 棘輪機構， 使電源線收進。 不按時， 電源線停止。 在按鈕、 鎖定片下有復位彈簧。該收線機構下面有兩個螺釘將後蓋、 中介蓋板鎖附在一 起。 在中介蓋板的下部有卡勾機構， 可以與隔基卡接。 上部從 後面穿過後蓋、 中

5、介蓋板有兩個螺釘鎖附在固定在本體上的鎖 定片上。.<0I d0£0t «jI19SieMeXlMU* « aIaq CnHTAClM2XI-AU4L8C73O111A* 豪1BACK CDVEPPPK51O8H117330W-03-3115 SCREW【SOP HC *3*15IC73O1OIA* MKNOBPCL125OY1133000-01-3x10< *SCREWBTP NC »>ID2n7C73QW：3AIMUJIFE SHEETSUS430InnIiM咖 HcEm：!謀刷Iki 頸 |=1：1M 血rvamnn画皿®

6、HaFK9C73O112AJtMHBACK REELP CLiaSOY18C73O115AMBAFRONT REELP CL125OY17C730106AUT1USPBMG4 MJfOP16C73O1O8AMWBIG CtRCLE15C730107Aunu crmF4<«.4>14C73O1O4AMOtAL SHEETLY12C««L2：I3C730102AMMSPRINGSUS3OE1£C73OLO9AHOILE CDVEKPCL125QY1 SCREWBTP HC #31123!*/#»tJLM» A/A *u收線長度

7、：電 源線'外露1。85Ma.2 .排線方式比較：根據收線時電源線的排布方式，可將收線裝置分為單圈和 多圈兩種，現將其特點比較如下表排線方式單圈多圈典型樣機TS K-736SANY 0 A -R82(W ) PAN AS ONIC NI-45GX排線規律較規則隨機排列，每次都不同 層次不分明，較不規則摩擦阻力只有上下圈之間的摩擦， 阻力小，拉收線時較順暢除上下圈之間的摩擦外， 左右及傾斜方向會產生 擠壓和斜嵌，磨損嚴重， 拉收線時較不順暢佔用空間（相同電源線長 度下）徑向佔用空間大 軸向佔用空間小軸向佔用空間大 徑向佔用空間小*收線控制依靠再次拉動電源線帶動棘 輪轉離卡點，使轉軸回轉依

8、靠按鈕動作打開轉軸卡點 使其回轉*限速機構一般有一般無* i.收線控制機構的方式與限速機構的有無，是在樣機拆解的 基礎上的總結，並非絕對。我們就曾作過在7302單圈卷線機構上 加按鈕控制，及在7861卷線機構中取消按鈕而採用拉動電源線收 線的嘗試，但未經量產的驗證。* ii .收線控制機構與限速機構的方式將于下具體闡述* iii .在多圈收線機構中未見到限速機構的一個可能原因為，多 圈收線需要達到一定的速度，以克服更大的收線阻力。我們發現， 當速度較慢時，線的分佈會嚴重不均勻而沿一圈迅速爬高，容易 卡死。3 .鎖定及收線機構的方式：I . 棘輪方式1 .工叵育冋夕Hi,菁显W简殴*. 祥粽置的

9、外¥Fi吏凸輪I酹和尅至極隔.2 .宙!廃S誥曲脊绵简迪時针鞅,過了 诉筒询克站.訓片旳It弔下， 建典tm畫養1S由TI曄遞的工作面幔去.3 . L映摩止拉踪，哥醛!漕e豔的乍星下，卷点直 <Bmmi,芾做備曙衬轉軸” 1吏t哺總肓 &7軟低工作面和垂甫的卡PUTT逆時3W钊 兼葺商的夾弟此時存垠着的的中心，凸輪的 坤中心，晦B创;的乍史硏用一iS三角无,.bi4 ”由丄三寓阳聽鼻性#1曲卑MM 誉痢fe相互林賊規淳止*5 .赛傻收F原郢底（闫外挂出，M存焜肯逆 時讨邮,同時凸輪在彈片时乐下,曲衬蓉 軸下爭一程倚皈低工样® .瘵徴,fe閘老傑 .赛，此時.巷

10、淳盲岳15養歸鼬I乍用T jm 讨*3曲?收腺6 .收痹睦瞪針一轉賦茁I誉瘟筒盯社虚工昨面頂 超芒鶴姐輪曲針辑動.7.1忙臟BE站悝螂时魂直礙；* 工作面呜超嗨，£舷徒针鮒.8 ,收请呼，凸輪在卷得1最活工斶&:妝饗, 出黄凸li讦F彈#的打 1BW罰碑至 彈'片辛雛牡罰曲曲:鸞*9 .再次!吏眾斗问軒扌靖庐,卡需肓护昨衬轉融, 童煤實旳最高工柞面馆己商lUW時剥,伸 凸輛尚卡呀imwiE趣联肪卡點.凸轴!呛 服爭騰靑的帚言工件面,從而回竟曲鵜1,此機構為大同公司的專利，目前736單圈卷線盤即為此機構。II . 滑動軌道控制機構誉線筒上的銷定桂-T'、0?收線

11、芫我後,向外拉線的狀態”1 .巷線筒上豹銷宗柱與卷線筒聯纟吉在一起, 銷定柱可以在卷線筒上轉動.此睦在;咼 施簧1諸能的作用下,鎖定性在滑歎的外 圄順時針轉動不收線.4 ”維漕向外扌立線的抵態,3 .拉線到一定長度後停止拉線,£咼抵 #儲詆的作用下,鎖定柱滑到稽定位置, 從页使巷腺直薛止.6 .松開電:原線後的收線狀懇.1:P.UOCL5CI2.00El-El SECZooJ .0DIDi SECE"1ElHlHl5LL-Ll皿7Ir0 50 力”、SElF：-F1 SE：滑動軌道結構圖此機構為SAYO N產品卷線盤結構III. 按鈕控制機構忙t盯上T車护 芾執活卞匕日上T

12、車針 冉限莘臣个科甬ri青昂（萨壬自丰巫S由軍勒硝tF-詛4比4 .限速機構： ZL /'/ / /“ K.'、 .“、XX / . / /'- _ _'I _ .-4. -"隹匕坤去*EF舁面上* hU后乏异直为葩 軍樹. 富港点焉輕耳大刊ft，能一坪叵-|軍勃，电圧'乍 田广壁.建章範国.；屮库广壁至-?越大,laz 空何号比,饪而奔貝昂奩盯审善澤丁丁 ”UL規格電源線的自動收線機構1. 電源線規格美國市場極性插電壓：12 0V電源線外露長度：2 . 44m2. 安規要求6M M電源線的外絕緣護套不得磨破。裸露帶電體的電氣間隙1。電源線拉出

13、收進6000次， 電源線彎曲50000次。必須通過CUL的摔落測試。電源線必須通過20磅（9KG）的拉力測試。針對以上的安規要求，首先我們必須保證電氣間隙 1。60 MM以上。對與收拉線6000次，以及電源線彎曲 50 000次，在機構上主要應注意入線口的設計。入線口 的上下兩側向內必須是大的圓弧過渡，以免尖銳的過渡 會刮傷電源線；另外電源線入口的左右兩側在與上下 便過渡處不得出現銳角或凸出在上下兩側上的銳邊。見 下圖：上Ttr暹日1咽 * 蔭肯-严春丄干牙 土 Pritt 至U-上下帀側日廿HE”：越辛.以*古|亘5原异、y -丄-K - h E 要通過CUL摔落測試及9千克力的拉力測試，則

14、要注 意收線裝置與本體、隔基等的連接的強度及剛度；另外 應該注意中介蓋板上轉軸的強度。3. 有關專利：在786 1的設計過程中，我們曾受到松下專利的困擾，主要 的專利限制有兩條：I. 按鈕控制的收線機構若不用按鈕控制，則需採取大同的棘輪機構或三洋的滑 動軌道機構，但也可能牽扯到這兩家公司的專利問題.II. 底部開口以利收線/、這個限制條件對收線空間影響非常大，若要底部封口， 則必須給定足夠的收線空間.（有關松下在美國申請的專利原文，請參照附錄一）4.空間要求（多圈）<«LIL fetMUUMML疥有同知B二财示力 0110( ««<«)* 小

15、 *« 冷静*«厚米 3 4(#A). 虚*立同以上 3肓24米20*«*住町 MA<«ft ««*H3tM*T>«*MT0 8.0 0 崎理个程«*#两哉时不良|»什*4虬»井*«*砂就«盒41* 中 zejejULAJbM&A 曲4 024.00后JUU&丹/ «xaXcmd股JQA規格電源線的自動收線機構1. 電源線規格日本市場兩扁插電壓：10 0V電源線外露長度：1. 85m2. 安規要求裸露帶電體的電氣間隙2。5MM電源線以30

16、M /M IN的速度拉出1 000次，電源線的外絕 緣護套不得磨破線芯的斷線率不得超過30% ；不得有其他異常情況。 針對以上的安規要求，首先我們必須保證電氣間隙2。50M M以上。對與收拉線1000次,在機構上主要 應注意入線口的設計。入線口的上下兩側向內必須是大 的圓弧過渡，以免尖銳的過渡會刮傷電源線；另外電源 線入口的左右兩側在與上下便過渡處不得出現銳角或 凸出在上下兩側上的銳邊。見下圖：上下帀懼町士圖刃過辛.以.旳古|亘5原早,、y|3.有關專利（缺乏資料）4. 空間要求（多圈）以下甫关fc动收贱机樋外M要求供ID歼现设计时赛輦 <.QA自动收点机枸*小有兹外丹空间如a所毎为;

17、0 y 3 C收坯盘诞鞭最小空间會聘恻壁厚：來3 4 （厚度；. 在收程空间玖上连应有24半三0的按钮运行空甩 此外 在收蜿霊间以外还应疽可以妾排下78JJ的两个哉柱的 空凤 安排两暂柱时不鱼与外璧接 近.以厉外彫攻缩变形"收 蝇盘连料中心躍后養贱箕最小距离为/ 0/、后A侧*外 '砌示意K肩證A曲夕卜/形示*®五其他收線方式為配合外觀上的需求，我們還作過一些卷線的方案，但由 于問題較多，都不成功，在這裡略為提及：1 橡 膠 套 式 此種設想結構和原理十分簡單。在後蓋的前端長出一個有 孔的卷線筒， 電源線從孔中通過， 直接與內配線相連。電源線 卷在卷線筒上。線卷好後

18、， 將套在卷線筒後部的 橡膠套翻過來 護住電源線。但是經開了一個簡易模後， 發現了許多問題而無 法實施。2 連 杆 轉 動 的 手 動 收 線 形 式 此種形式結構與自動收線十分相似。所不同的是它的後卷 線筒後部沒有裝儲能的平面渦旋簧，而是從其後部長出一個軸， 在後蓋的後面上有一個連杆， 可以帶動整個卷線輪轉動。從而 達到收線的功能。此種形式的缺點是收線要手工操作， 而且收 線力一旦取消後， 卷緊的線會因線的回彈力而松動。3插頭端的 自動收線機構 此種設想是將收線裝置與熨斗分離， 而靠近電源線的插頭 端， 類似于收線裝置帶一插頭， 而用不帶插頭的電源線連接收 線裝置與熨斗， 收線後將收線裝置掛

19、在熨斗上。附錄（ 美 國 自 動 卷 線 專 利 ）Un ited St ates Patent 5, 37 1, 96 0Wi lson , et al. December 13, 19 94Ir on i ncl udi ng cord r eel and water tankAb stractA ga rm ent iron i ncl udi ng a rear face to which there is releasabl y at t ach ed a cord reel. Th e cord reel incl ud es a catch to retain it in its

20、 position mounted on the rear face. Th e cord reel is hollow so as to provi de a cavity w hich receives a beaker which may be used to deliver water to the water r es er voi r of the iron. Duri ng u se, the cord reel and beaker are removed f rom the rear face so that the iron may be vertically orient

21、ed, resting on i ts r ear face.In ventors: Wi lson ; (Neutal Bay, A U)As signee: Sun beam Ap pl. No.: 970620Fi led: Nov ember 3,Ian G. (Chel tenham, A U); Ho are; Rich ard L.Cor poration Li mited ( Campsie, A U)1992U.S. Class: 38/77.3; 3 8/ 96; 219/256In tern'l Class: D06F 075/ 28Field of Search

22、: 38/ 75 ,7 7. 1, 77.3 ,79,88,94 21 9/ 246 ,2 47 ,2 56 ,2 59 2 42/ 47.5 ,7 7, 78. 7, 10 7. 7References Ci ted Referenced ByU.S. P atent Do cuments2063274 Dec., 1936 Ehrlich 21 9/ 256.3949499 A pr., 1976 S ch ae ff er et al. 38/77.4347428 A ug., 1982 Conrad et al. 3 8/ 88.4517757 M ay., 1985 A sada e

23、t al. 38/88.4784616 Nov., 1988 Zi mmermann 2 19 / 24 7. For ei gn P atent D ocuments0053254 Jun., 1982 EP.25 83792 Dec. , 1986 FR 2 19/247.38 25501 Feb., 1990 DE.3843384 Jul., 1990 DE.0212631 M ar., 1941 C H 38/77.2233986 Jan., 1991 GB.Primary Examiner: Crowder; Cliffo rd D. As sistant Ex aminer: Iz

24、 agui rr e; Is mael At torn ey, Agent or Fi rm: Ladas & ParryClaims1. A garment iron compri sing: a main body having a handle and a soleplate, said body having a rear face provided wi th enga geabl e means thereat, an electric cord ex t endi n g from said body for connection wi than elect ri cal

25、 power supply to el ect ri cally heat said solepl ate, andsai d moulded i na cord r eel releasabl y attached to said rear face of the body, said cord reel incl uding a fr ont fl ange engageable wi th said main body at sai d rear face t her eo f, and a resilient catch f or releasabl y securing the co

26、rd reel to said rear face of t he main body, said resilient catch compri sing a l ever having an end l ip, said resilient catch having a rest position i n wh ich said l ip engages said engageable m eans to secure the cord reel to said main body and a release position i n which said lip i s released

27、from said engageable means and sai d cord reel i s released f rom said m ai n body.2. T he garment resi li ent catch said cord reel.i ron as cl aimed in claim 1, whereincom pr i ses a pivot al l ever integrallyi ron as cl ai med in cl aim 1, whereinsai d cor d3. T he garmentreel incl udes a rear f l

28、ange spaced f rom said front fl ange and fo rming a r ecess therebetween i n wh ich s aid cord can be wo und wh en t he cord reel is engaged wi th sai d m ain body, said r ear fl ange having t op and bottom tro u ghs in whi ch the cord i s passed before being wo und in said recess.4. The garment i r

29、on as cl aimed in claim 3, wherein sai d front fl ange of the cord r eel has a trough through whi ch said cord can pass to one of the t ro ughs of the rear f lange of the cord reel.5. The ga rm ent i ron as cl aimed in claim 1, wherein sai d cord reel has a central chamber accessible t hr ou gh a re

30、ar facing opening of s aid cord reel, said ga rm en t i ron further compri sing a beaker engageabl e in said central chamber.6. T he garment i ron as cl ai med in cl aim 5, wherein sai d beaker and cord reel have means f or prov iding a snap fi t fo r said beaker i n said ch amber.7. The garment iro

31、n as claimed in claim 5, wherein said resilient catch com pr i ses a pivot al l ever integrally moulded i n said cord reel, said beaker having a gr oove whi ch ex t ends between said t op and bottom t ro u ghs when t he beaker is engaged in said chamber for passage of the cord in said groove between

32、 said t ro ughs.8. The garment iron as claimed in claim 5, wherein said beaker has a water cavi ty therein and a fi lling o peni ng.a beaker member,m ember def ini ngincluding f langes at said fro nt and a recess therebetween in which the can be wo un d aroun d s aid ch am b ersaid r eel surfaces of

33、 t he m ain body reel member is engaged with said main body.rearp ower cord when t he9. In a ga rm ent iron havi ng a m ain body with an el ect ri cal po wer cord extendi ng f rom said body, the improv ement comprising a combination removable cord reel and beaker i ncl udi ng, a reel member having a

34、 front face releasably engageable with a rear face of the main body, and a rear face spaced from said f ront face, said reel member havi ng a central chamber open and accessible at said rear face of t he reel m ember, and r emov abl y engageable in said chamber of the reel10. Th e combination claime

35、d in claim 9, wherein said rear fl ange of the reel member has t wo oppos ed troughs therein in which the cord is passed before being wound in said recess around said ch am ber.11. The combination as claimed in claim 10, wherein said front fl ange of the reel member has a trough t hrough wh ich said

36、 cord can pass to one of t he t r ou ghs in the rear fl ange of the reel member.12. Th e com bination as claimed in claim 9, wherein said reel member includes a releasable catch means for releasably en ga gi ng t he main bo dy.13. Th e com bination as claimed in claim 9, wherein said front fl ange o

37、f the reel member includes m eans for engaging t he main bo dy.Descri ptionTEC HNIC AL FIELDThe present invention relates to a garment iron and more particularly to a reel to receive the el ect ri c cord of the iron.BAC KGROUND OF THE IN VENT IO NEl ect ri cal l y ope r at ed irons are pr ov i ded w

38、i th an electric cord to extend t o a power out l et. It has been known to provi de the rear end of irons wi th means about which the electric cord may be wound for storage pu rp os es. However, this previousl y known means of storing t he el ect ri c cord has not been successful as the cord in e ss

39、 en ce is not ret ai ne d in a coiled configur ation. Th ere has also been the need to reduce the overall length of the i ron in order to ensure stability of the iron when i t rests on i ts rear face so as to have the hot plate generally upwardl y extendi ng. If the rear of the i ron i s extended to

40、 accommodate the cord, the iron becomes less stable due to i ts height when in the rest pos ition.Steam irons are provided with a resevoir into which water is delivered, which water is transformed into steam duri ng the ironi ng p rocess. Frequently new irons are sold with a beaker which may be used

41、 to deliver water t o the water inlet of the iron. Th ese b ea k ers are not physically associated with the iron and accordingly become l ost.OBJECT OF TH E INV ENT IONIt is the obj ect of the present invention t o overcome or sub st ant i al ly ameliorate the above disadvantages.SUM MARY O F TH E I

42、N VENT IONi ron compri sing:being equi pped wi th a means to heat t he sol epl at e,Th ere is di scl osed herei n a garment a main body provi ding a handle and sol epl ate, and electri cal ly ope r at ed said body havi ng a rear face wi th engagable means;an elect ri c cord ex t endi n g fr om said

43、body to connect sai d el ect ri cally operated means to an el ect ri c supply; and a cord r eel about whi ch said cord i s wound, said reel having attachment means to r el eas abl y engage said engagable means to selectively secure said reel to said main body.Preferabl y the reel is hollow so as to

44、provi de a cavi ty, and a beaker i s shaped to be received within said cavity.BRIEF DESCRIPTION OF T HE DRAW IN GSA p referred form of the p resent invention will now be described by way of example with reference to the accom panying dr awi ngs wh erein:FIG. 1 is a schematic parts expl oded perspect

45、ive view of an iron i ncorporati ng a cor d reel and beaker;FIG.isschematic rear el ev at i o n of t he reel of FIG. 1;FIG.isschematic fr ont elevation of the reel of FIG. 1;FIG.isschematic t op pl an vi ew of t he reel of FIG. 1;FIG.isschematic bottom pl an view of t he reel of FIG. 1;andFIG. 6 is

46、a schematic sectioned side el evation of the reel as illustrated in FIG. 5 sectioned along the line 6-6.DESCRIPTION OF TH E PREFERRED EMBODIMENTIn the accompanyi ng drawi ngs t here i s schematically depicted an iron 10. The iron 10 includes a main body 11 provided with sol epl ate 12 wh ich is elec

47、trically heated. The body 11 is al so pr ov i d ed with a handle 13 and a rear face 14. Th e soleplate 12 is connected to an el ect ri c cord 15, which co nn ect s the sol epl ate 1 2 t o a suppl y of electricity.Adjacent to the rear face 14 is a lip or flange 16, whi ch pr ov i d es an engagable me

48、ans to be operatively associated wi th cord reel 17. The cord reel 17 has a forward flange 18 of " L- shaped" configuration so as to have a base 19 and a forwardly projecting lip 20. The flange 20 ex t ends down the left and right hand sides of thereel 17 and isadapted to en gage the flang

49、e 16 so that the reel 17 can be mounted adj acent to the face 14. Th efl ange 18 i s particularly co nfi gu red so that the reel 17 i s coupl ed to the flange 16 by downw ard m ov em ent o f the reel 17 over t he rear face 14.The reel 17 has a recess21 which forms a loop and within which thecord 15

50、iswound. The rear of the reel 17 is also pr ov i d ed with a fl ange 22 so that the cord 15 has its loops sandwiched between the flanges 18 and 22.Th e reel 17 is of a tri angul ar confi guration wi th its upper apex pr ovided wi th a trough 23 having a f orward aperture 24 whi ch en abl es the cor

51、d 15 to enter the trough 23, and a rearw ard aperture 25 enabling the cord to extend down wardl y from the trough 23 t o a l ow er trough 26. Th e cord 15 passes through t he trough 26 and t hen is woun d arou nd t he reel 1 7 so t hat the loops are cont ained i n the recess 21.The reel 17 Is of a h

52、ol low con fi gu rat i on soas to provide a central chamber 27. Lo catabl e wi thi n the chamber 2 7 i s a beak er 28 which is of a complementary shape to the chamber 27 and includes a recess 29 i nto which the trough 23 proj ects, and a rear recess 30 down which thecord passes to enter the trough 2

53、6. Th e beaker 28 may beof a "dish" co n fi gu r at i on so as to have an open face or alternatively may be provided with a filling neck eq ui pp ed with a s top p er. Ho w ev er the preferred construction of the beaker 28 hasafilling aperture 38 which i nhibi ts st orage of the beak er 28 w i th water i n it.Preferably the beaker 28 can "snap" fit within thechamber 27.To secure thereel 1