TW200528069A - Artificial tooth attachment and process for producing the same - Google Patents

Artificial tooth attachment and process for producing the same Download PDF

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Publication number
TW200528069A
TW200528069A TW94104959A TW94104959A TW200528069A TW 200528069 A TW200528069 A TW 200528069A TW 94104959 A TW94104959 A TW 94104959A TW 94104959 A TW94104959 A TW 94104959A TW 200528069 A TW200528069 A TW 200528069A
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Taiwan
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cup
shaped ring
ring
plate
mouth
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TW94104959A
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Chinese (zh)
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TWI300709B (en
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Akira Kikuchi
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Neomax Co Ltd
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C13/00—Dental prostheses; Making same
    • A61C13/225—Fastening prostheses in the mouth
    • A61C13/235—Magnetic fastening
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0081—Magnetic dental implant retention systems

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  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dental Prosthetics (AREA)

Abstract

An artificial tooth attachment characterized in comprising a cup-like yoke formed from a corrosion-resisting soft magnet material having a permanent magnet and a sink for receiving aforesaid permanent magnet, and a seal plate inserted into an opening portion of the sink of aforesaid yoke, wherein the aforesaid seal plate comprises a plate-like yoke formed from a corrosion-resisting soft magnet material and a seal ring formed from a corrosion-resisting soft magnet material designated around the surrounding of aforesaid plate-like yoke, and the aforesaid seal plate connects with the aforesaid yoke through a welding portion having a plural position for fixing at least a butt portion of aforesaid yoke and aforesaid seal ring and at least one all-around welding portion formed by covering the butt portion of aforesaid yoke and aforesaid seal ring and the butt portion of aforesaid plate-like yoke and aforesaid seal ring, and thereby the aforesaid permanent is sealed.

Description

200^28069 九、發明說明： 【發明所屬之技術領域】 本發明是有關假牙附件、及其製法，藉由永久磁鐵來 利用磁性吸引力並用來保持假牙。 【先前技術】 曰本專利特開平4_ 22 7 2 5 3號所揭示，如第24圖所示， 具有··在內部具有永久磁鐵402同時在假牙床420所埋入 之假牙附件400、及在埋設於牙槽421的根面板422所設 ® 置之軟磁性定位片423，並藉由永久磁鐵402及定位片423 的磁性吸引力在根面板所保持之假牙420。假牙附件400， 是具有在軟磁性不銹鋼製的杯狀環口 40 1之開口部使軟磁 性不銹鋼製的密封圓板4 1 4及非磁性不銹鋼製之密封環4 1 5 所配置成同心狀，並使密封圓板4 1 4和密封環4 1 5之間及 密封環4 1 5和杯狀環口 4 0 1之間所全周圍熔接來密封永久 磁鐵402的構造。假牙附件400，對人體是無害，具有長 I 期間化學的穩定性，可用來滿足大的吸引力等要求。 第25圖所示之磁性附件400，因爲這樣的構造，所以 在熔接前，在杯狀環口 401及密封環415之間由於加工尺 寸的誤差會有若干之間隙。杯狀環口 401及密封環415的 熔接，是使兩者之熔融的金屬所混合來塡補間隙。可是磁 性附件4 0 0，是將該間隙順著一方向以熔融金屬所塡補來 進行周圍熔接’所以密封環4 1 5是當熔融金屬進行冷卻時 所拉伸’並使熔接部進行收縮同時使未熔接部之間隙擴 大，因此可知會使密封圓板4 1 4大傾斜的問題。在周圍熔 2005*28069 接中使密封圓板4 1 4傾斜，則不僅使密封圓板4 1 4及杯狀 環口 4 0 1之間隙擴大，而且使未熔接部凸出，在兩者間產 生段差。其結果，形成使熔融的範圍及深度等不固定之熔 接部。藉此使接合強度變弱，且使密封性不充足，並使製 造合格率降低。 曰本專利特開平^4 3 7 5 76號，是揭示第26圖所示 構造之假牙附件。第26圖之假牙附件500，是由磁鐵體 5 02、及具有用來收納磁鐵體502的凹處之軟磁性杯狀環 ® 口 5 0 1、及來封入磁鐵體5 0 2在杯狀環口 5 0 1的開口部所 嵌合之密封板5 1 3所構成，密封板5 1 3是由軟磁性板狀環 口 5 1 4、及在其外周圍所金屬包層（c 1 a d )接合的非磁性 密封環5 1 5所構成，板狀環口 5 1 4及非磁性密封環5 1 5及 杯狀環口 501之間至少使其表面側一體所熔接。 第26圖所示磁性附件500，是使密封板513在杯狀環 口 50 1之開口部所壓入，在周圍熔接中使密封板無傾斜之 Φ 虞，但當數Π1ΙΏ程度的直徑之假牙附件500組合時在杯狀 環口 5 0 1的開口部要將板狀環口 5 1 4完全地壓入成水平是 有所困難，通常是使所壓入之板狀環口 5 1 4在稍微傾斜狀 態下形成在杯狀環口 50 1所熔接。其結果，依然會產生使 熔融之範圍及深度等形成不固定之熔接部的問題。而且， 在小的杯狀環口 5 0 1內依然要來壓入小的板狀環口 5 1 4之 作業是必須要有精密的控制，不僅自動化困難，而且因爲 麻煩所以使生產性很低。 -6- Ϊ00528069 【發明内容】 因此本發明之目的，是提供一種假牙附件，使杯狀環 口的凹部以優越的品質所密封，且有高的磁性吸著力，良 好的耐腐蝕性。 本發明另外之一目的，是提供一種製法，可提高這種 假牙附件之生產合格率。 〔發明揭示〕 根據本發明之一實施形態的假牙附件，其特徵爲具 ® 有：永久磁鐡、及由具有用來收納前述永久磁鐵之凹部的 耐腐蝕性軟磁性材料而成杯狀環口、及在前述杯狀環□之 凹部的開口部所嵌入之密封板，而前述密封板，是由耐腐 蝕性軟磁性材料而成板狀環口、及在前述板狀環口的外周 圍由所配設之耐腐蝕性非磁性材料而成密封環所構成，至 少藉由用來固定前述杯狀環口及前述密封環的對接部之複 數部位的點熔接部、及來覆蓋前述杯狀環口和前述密封環 φ 之對接部及前述密封環和前述板狀環口之對接部所形成的 至少1個全周圍熔接部，並使前述密封板接合在前述杯狀 環口，因此使前述永久磁鐵被密封。 根據本發明之最佳實施形態的磁性附件，具有：永久 磁鐵、及由具有用來收納前述永久磁鐵同時使開口端附近 所擴大直徑之凹部的耐腐蝕性軟磁性材料而成之杯狀環 □ '及在前述杯狀環口的前述擴大直徑部所嵌入之密封 板’而前述密封板，是由耐腐蝕性軟磁性材料而成板狀環 □、及在前述板狀環口的外周圍由所配設之耐腐蝕性非磁 2005^28069 性材料而成密封環所構成，至少藉由用來固定前述杯狀環 口的前述擴大直徑部及前述密封環的對接部之複數部位的 點熔接部、及來覆蓋前述杯狀環口之前述擴大直徑部和前 述密封環之對接部及前述密封環和前述板狀環口之對接部 所形成的至少1個全周圍熔接部，並使前述密封板接合在 前述杯狀環口，因此使前述擴大直徑部及前述永久磁鐵之 間以設置磁性間隙的狀態下使前述永久磁鐵被密封。實用 上前述擴大直徑部及前述凹部之段差是在20〜200 // m爲 佳。 根據本發明另外之一實施形態的假牙附件，其特徵爲 具有：永久磁鐵、及由具有用來收納前述永久磁鐵之凹部 的耐腐蝕性軟磁性材料而成杯狀環口、及在前述杯狀環口 之凹部的開口部所嵌入之密封板，而前述密封板，是由耐 腐蝕性軟磁性材料而成板狀環口、及在前述板狀環口的外 周圍由所配設之耐腐鈾性非磁性材料而成密封環所構成， φ 至少藉由用來覆蓋前述杯狀環口及前述密封環的對接部及 前述密封環和前述板狀環口之對接部所形成的至少1個全 周圍熔接部，並使前述密封板接合在前述杯狀環口，因此 使前述永久磁鐵被密封，同時前述杯狀環口之前述開口端 附近的領域是實質上寬度不變而進行縮小直徑。 根據本發明另外別的之一實施形態的磁性附件，其特 徵爲具有：永久磁鐵、及由具有用來收納前述永久磁鐵同 時使開口端附近之凹部的耐腐蝕性軟磁性材料而成杯狀環 200528069 口、及在前述杯狀環口之前述擴大直徑部所嵌入之密封 板，而前述密封板，是由耐腐蝕性軟磁性材料而成板狀環 口、及在前述板狀環口的外周圍由所配設之耐腐蝕性非磁 性材料而成密封環所構成，藉由用來覆蓋前述杯狀環口之 前述擴大直徑部和前述密封環的對接部及前述密封環和前 述板狀環口之對接部所形成的至少1個全周圍熔接部，並 使前述密封板接合在前述杯狀環口，因此在前述擴大直徑 部及前述永久磁鐵之間在設置磁性間隙的狀態下使前述永 久磁鐵被密封，同時前述杯狀環口之前述開口端附近的領 域是實質上寬度不變而進行縮小直徑。實用上前述擴大直 徑部及前述凹部之段差是在20〜200 // m爲佳。 前述點熔接部，是僅（a )前述杯狀環口和前述密封 環之對接部，或在（b)前述杯狀環口和前述密封環之對 接部，及前述密封環和前述板狀環口的對接部之兩方所形 成爲佳。前述點熔接部大致以等間隔爲佳。 前述全周圍熔接部，是由跨越全周圍來覆蓋（a)前 述杯狀環口和前述密封環之對接部所形成的第一熔接部， 及跨越全周圍來覆蓋前述密封環和前述板狀環口的對接部 所形成之第二熔接部所構成，或跨越全周圍來覆蓋（b) 前述杯狀環口和前述密封環之對接部，及前述密封環和前 述板狀環口的對接部以一體的熔接部爲佳。 前述密封板及前述杯狀環口之表面是在全周圍熔接後 來平面加工爲佳。 200528069 本發明之假牙附件的製法，其特徵爲：在由耐腐 軟磁性材料而成杯狀環口之凹部，來收納永久磁鐵， 耐腐鈾性軟磁性材料的板狀環口及配置於其外周圍之 鈾性非磁性材料的密封環而成密封板來嵌入在前述杯 口之開口部’至少將前述杯狀環口及前述密封環的對 在複數部位來點熔接，並來覆蓋前述杯狀環口和前述 環之對接部及前述密封環和前述板狀環口的對接部用 周圍熔接前述杯狀環口及前述密封板。 ® 僅用來固定（a)前述杯狀環口和前述密封環之 部，或一次地用來固定（b )前述杯狀環口和前述密 之對接部，及前述密封環和前述板狀環口的對接部， 述點熔接在複數部位來進行爲佳。 用來形成跨越全周圍來覆蓋（a)前述杯狀環口 述密封環之對接部的第一熔接部，及跨越全周圍來覆 述密封環和前述板狀環口的對接部之第二熔接部，或 | 全周圍一體來覆蓋（b)前述杯狀環口和前述密封環 接部，及前述密封環和前述板狀環口的對接部，來進 述全周圍熔接爲佳。 在全周圍熔接後，用來平面加工前述密封板及前 狀環口爲佳。 【實施方式】 將本發明之假牙附件來參考檢送圖式並在以下來 加以說明，但具有同樣一位數數字參考號碼的部位基 蝕性 將由 耐腐 狀環 接部 密封 來全 對接 封環 將前 和前 一-u· 盍刖 跨越 之對 行前 述杯 詳細 本上 -10- 200528069 在各實施形態是共通之部位，所以僅止於最初的實施形態 之說明，在以後的實施形態是省略其詳細說明。 第1圖及第2圖，是顯示根據本發明之第一實施形態 的假牙附件。該假牙附件，基本構造是與第2 5圖構造同 樣，由圓形剖面之凹部所形成的軟磁性材料而成杯狀環口 1、及在此所收納的永久磁鐵2、及在凹部1 ’之開口部所 嵌入的密封板3所構成。密封板3，是在凹部1 ’內用來 密封永久磁鐵2，同時用來形成磁性電路之構件，由軟磁 ® 性材料而成圓形的板狀環口 4、及在其外周面由所裝設之 同一寬度的非磁性材料而成密封板5所構成。還有杯狀環 口 1及密封板3之外形並不限於圓形，亦可用橢圓形或四 角形等之多角形。 本發明，杯狀環口及板狀環口是使用耐腐蝕性軟磁性 不銹鋼（譬如SUS447J1、SUSXM27、SUS444等）爲佳。又， 密封環是使用耐腐蝕性非磁性不銹鋼（譬如SUS3 1 6L )爲 • 佳。 爲了提高假牙附件之組合效率，密封板3，是板狀環 口 4儘可能以軟磁性材料的圓棒及密封環5儘可能來嵌入 非磁性材料之圓筒材，將拉拔加工的材料藉由切片成預定 厚度所形成爲佳。藉由切片所獲得密封板在還原性大氣中 以600〜880 °C0· 5〜10小時，較佳以700〜850 °C進行1 〜8小時熱處理，到室溫爲止來進行冷卻。熱處理條件在 未達6 0 0 °C X 0 · 5小時則在板狀環口 4及密封環5之間完 -11 - 200528069 全不會產生接合，又在超過8 80 °CX〇· 5小時的 板狀環口 4及密封環5之界面來進行融合，如後 3所示所獲得假牙附件的磁性吸引力很低。藉由 理，使板狀環口 4儘可能圓板體及密封環5儘可 來薄薄地（輕輕地）所接合。用語「薄薄地（輕 其意義是指圓板體及圓筒材之接合界面中的熔融 率在10%以下，特別在5%以下。還有，亦可將前 熱處理在切片之前來進行。 B 密封板3及杯狀環口 1是個別來製造，所以 生嵌合尺寸的誤差。因此如先前技術之假牙附件 封板3來壓入到杯狀環口 1，將密封板3之外徑 杯狀環口 1的內徑稍小，則將密封板3可容易地 狀環口 1之開口部爲佳。藉由熔接爲了確實地來進 所以密封板3及杯狀環口 1的間隙X是作爲10〜 佳。如第1圖（1 )所示，間隙X是（杯狀環口 ： φ -(密封板3之外徑）。 如第1圖（b )所示，密封板3 ’是在收納於 1之凹部Γ的永久磁鐵2之上面來進行密接在E 嵌入。此時，密封板3的上面與杯狀環口 1之上 成一致。密封板3及杯狀環口 1是以雷射或電子 接，而內部之永久磁鐵2是在環口內所密封並與 口。熔接部，是由來覆蓋密封板3及杯狀環口 1 所設置複數部位的點熔接部6、及來覆蓋杯狀環[ 熱處理則 述比較例 前述熱處 能圓筒材 輕地）」， 部之面積 述條件之 必然會產 取代將密 來設定比 嵌入到杯 行密封， 60 // m 爲 [之內徑） 杯狀環口 丨部1 ’所 面大致形 光束所熔 外部來封 之對接部 3 1和密 -12- 200528069 封環5之對接部及密封環5和板狀環口 4的對接部所形成 之全周圍熔接部7所構成。 點熔接部6，是藉由用來點的照射雷射光使熔融凝固 (熔接）之部分。此時若使雷射光稍微移動即可。第一實 施形態’雷射點直徑是挾持密封環5用來覆蓋杯狀環口 1 及板狀環口 4的一部分。因此，藉由點熔接部6，板狀環 口 4是在杯狀環口 1 一體所固定。可是這並非必須要件， _ 密封環5及板狀環口 4以拉拔加工強固地所固定之情況 下’至少使杯狀環口 1及密封環5的對接部藉由點熔接部 6所固定即可。點熔接部6對於密封板3之中心軸大致以 等間隔（點對稱）設有複數部位（譬如2〜8部位）爲佳。 圖示之例，點熔接部6是由4個之點熔接部6 a〜6d所構 成。 本實施形態，如第1圖（c )所示，全周圍熔接部7， 是跨越全周圍一體來覆蓋杯狀環口 1和密封環5之對接 φ 部、及密封環5和板狀環口 4的對接部所形成。一體的全 周圍熔接部7，是使密封環5之寬度譬如點直徑的1 / 2以 下之狹窄的情況爲佳。該一體的全周圍熔接部7，是挾持 也' 封環5在杯狀環口 1及板狀環口 4同時藉由來照射雷射 光所形成。 杯狀環口 1是從凹部1 ’之底面附近到開口端附近具 有相同寬度w。第1圖（c)所示全周圍熔接後之假牙附件， 對於杯狀環口 1的凹部1 ’之底面附近的外徑Dob來縮小 -13- 200528069 凹部1 之開口端附近的外徑Dou (Dob>Dou’ ）。還有 如第1圖（d )所示，平面加工後，外徑Dou’成爲Dou。 來縮小開口端附近之外徑的現象可認爲由於以下理由 所產生。藉由點熔接以暫時固定在用來固定杯狀環口 1及 密封環5之時點杯狀環口 1的凹部開口端近傍之外徑是未 進行縮小。這是，點熔接部6 a〜6 d在進行熔融後凝固的 時點在熔接部產生作爲收縮的力量，但點熔接部6a〜6d 之體積小，所以由於不能將杯狀環口 1拉到跟前。來開始 ® 進行全周圍熔接，則所熔融的對接部（熔接部）來進行凝 固並加以收縮，所以將杯狀環口 1及密封環5在熔接部產 生拉力的作用。此時，密封環5，是在杯狀環口 1未被熔 融側介於點熔接部6所固定，所以在熔接部被拉伸亦不會 變形。另一方，杯狀環口 1將外周圍未被固定所以在熔接 部被拉伸，而一點點變形下去。將雷射照射之位置在周圍 方向偏移並進行全周圍熔接，則杯狀環口 1的開口端近傍 φ 是在熔接部側一點點拉到跟前而來，在用來熔接全周圍之 階段大致形成均勻地縮小。還有，藉由點熔接進行暫時固 定並進行全周圍熔接，則未被固定的密封環是在熔接部強 烈所拉近，並使密封板大大地凸出。 如第1圖（d )所示，密封板3及杯狀環口 1之熔接 面是藉由硏磨等所平面加工。藉由平面加工來除去熔接部 的局部性之凹凸，來形成平滑面9。假牙附件的平滑面9 與埋設於牙槽之根面板進行良好地密接，所以不會使磁通 -14- 200528069 打亂。其結果，用來裝設本發明之假牙附件的假牙可強固 地保持在牙槽。 第2圖是顯示第1圖（a )之假牙附件的製造製程。 首先在軟磁性杯狀環口 1之圓形剖面的凹部Γ來收納永 久磁鐵2，並在凹部1 ’之開口部來嵌入密封板3。將傾斜 之壓緊構件3 a的前端部擋接在密封板3之大約中央，來 固定密封板3〔製程（a )〕。這種狀態下，來覆蓋杯狀環口 1和密封環5之對接部1 a、及密封環5和板狀環口 4之對 接部4 a ’將複數部位的點溶接依6 a — 6 b — 6 c — 6 d順序來 進行〔製程（b )〕。使用雷射照射裝置3 b，以這樣對角線 上之6a->6b— 6c— 6d順序藉由進行點熔接，當熔融金屬 進行冷卻凝固時密封板3受到小的收縮力，且可使平衡， 因此可用來防止如先前技術之密封板3的凸出。藉由所獲 得之點熔接部6 a〜6 d，密封板3在杯狀環口 1強固地所固 定。 作爲密封板3，以拉拔加工將板狀環口 4及密封環5 進行一體化之後’藉由熱處理等來使用使接合部融接而成 密封板的情況下’點熔接，亦可僅在密封環5及杯狀環口 1之對接部1 a來進行。 除去壓緊構件3 a之後〔製程（c )〕，以連續地或斷續 地來照射點直徑的雷射光來覆蓋杯狀環口 1和密封環5之 對接部1 a、及密封環5和板狀環口 4之對接部4 a，用來 形成全周圍熔接部7〔製程（d )〕。密封板3是在杯狀環口 200528069 1以大致等間隔所固定，所以當全周圍熔接時密封板3不 會偏移，以穩定的熔接條件可獲得均勻之全周圍熔接部7。 熔融部形狀、熔融量、融入深度是跨越全周圍藉由大致均 勻的熔接焊道，使杯狀環口 1之開口部完全地被密封，而 永久磁鐵2從外部氣密地所遮斷。將全周圍熔接用雷射光 作爲點熔接用雷射光及同樣點直徑爲佳。第3圖（a )是 顯示全周圍熔接後之杯狀環口 1及密封板3的表面狀態， 第3圖（b )是顯示其剖面圖。本例點熔接部6 a〜6d是 全周圍熔接部7所遮蓋，但圖號7’之點是全周圍熔接部 的末端。 將完成熔接後之杯狀環口 1固定在平面硏磨機上，並 將杯狀環口 1及密封板3的熔接面以預定之深度（5來進行 平面加工（硏磨）〔製程（e )〕。切深深度（5，是杯狀環口 1及密封板3形成同一高度，同時不要使全周圍熔接部7 之凹凸殘留，作爲10/zm〜100/zm程度，較佳是40/zm〜60 //m。（5未達 ΙΟ/zm則在表面會殘留凹凸。其中一方5超 過1 0 0 // m，則熔接部之體積成爲過小會使熔接強度下降。 密封板3不會傾斜在杯狀環口 1大致以平行所熔接，所以 平面加工後熔融部形狀、熔融量及融入深度亦跨越全周圍 大致呈均勻，熔融部不會局部變淺或產生貫通孔來使密封 性降低。 用來穩定化熔接部之非磁性相（a U s t e n i t e (奧氏體） 「鋼的結構」相），同時藉由裝入於磁性附件之永久磁鐵 -16- 200528069 的機械性歪曲等使惡化之磁力恢復的目的下’在平面加工 後來進行熱處理爲佳。該熱處理，是不活性氣體大氣中’ 600 〜1100°C X0.5 〜10 小時，較佳是 7〇〇 〜900°C X0.5 小 時加熱後，到室溫爲止進行冷卻之條件爲佳。熱處理條件 未達600 °C X 0.5小時則熱處理的效果不充分，又超過1100 °C X 1 0小時則由於永久磁鐵之結晶粒的粗大化或再燒結使 磁力大幅度地降低，又不能無視杯狀環口及密封板的熱變 形。最後進行磁化可獲得本發明之假牙附件。 ® 如第1圖（c )所示，爲了杯狀環口 1及密封板3之 間隙X，全周圍熔接之後，杯狀環口 1僅在內側進行變形。 藉由點溶接將密封板3固定在杯狀環口 1，進而進行全周 圍熔接所以變形是在周圍方向大致均勻地產生。該變形量 z 是間隙X的大約一半。追是，朝向杯狀環口 1之內側 的變形量是在直徑方向兩端各有z’ ，所以全體是成爲 2 z 。譬如藉由平面加工使幣封板3約變薄2 〇 %之情況下， φ 平面加工後之變形量z是成爲約z的8 0 %。一般而言變形 量z是10〜40//m程度。 第4圖（a)及第4圖（ 實施形態的假牙附件，第5 施形態’是用來形成覆蓋杯狀 對接部2 1 a的點熔接部2 6 e、 密封環25和板狀環口 24之 26f、26h、26j、261，同時在 b)是顯示根據本發明之第二 圖是顯示其製造製程。本實 環口 21和密封環25之第一 26g > 26i、26k，及用來覆蓋 第一對接部2 4 a的點熔接部 第一對接部21a及第二對接 -17- 200528069 部24a用來個別形成第一全周圍熔接部27a及第二全周圍 熔接部27b。鄰接之點熔接部26e及26f、26g及26h、26i 及26j、以及26k及261是不重疊，又第一全周圍熔接部 27a及第二全周圍熔接部27b也不重疊。在第一全周圍熔 接部27a及第二全周圍熔接部27b之間露出有非磁性密封 環25，所以可有效地用來防止杯狀環口 21及板狀環口 24 之間的磁通短路。 第二實施形態之假牙附件的製法，除了用來個別形成 點熔接部26 e〜261及全周圍熔接部27 a及27b之外，其 他與第一實施形態相同。 第6圖（a)及第6圖（b)是顯示根據本發明之第三 實施形態的假牙附件，第7圖是顯示其製造製程。本實 施形態之假牙附件，具有用來覆蓋杯狀環口 3 1和密封環3 5 之第一對接部31a的點熔接部36e、36g、36i、36k ,及用 來覆蓋密封環35和板狀環口 34之第二對接部34a的點熔 接部36f、36h、36j、36卜同時在第一對接部31a及第二 對接部34a個別具有第一全周圍熔接部37a及第二全周圍 熔接部37 b這一點是與第二實施形態相同，但鄰接之點熔 接部 36e 及 36f、36g 及 36h、36i 及 36j、以及 36k 及 361 是重疊，又第一全周圍熔接部37a及第二全周圍熔接部37b 也是重疊這一點，是與第二實施形態不同。譬如，圖號36m 是點熔接部36k及361重疊的部分，圖號37c是第一全周 圍熔接部3 7 a及第二全周圍熔接部3 7 b重疊之部分。如第 -18- 200528069 6圖（a )點線所示，第一全周圍熔接部3 7 a及 熔接部3 7 b的重疊部分是在密封環3 5之大致 幾乎未混入杯狀環口 31或板狀環口 3 4的軟磁 以在磁性電路上並無特別之間題。又上述重疊 由平面加工幾乎被除去。 第8圖（a)及第8圖（b)是顯示根據本 實施形態的假牙附件。本實施形態之假牙附件 覆蓋杯狀環口 4 1和密封環4 5之第一對接部， ® 密封環45和板狀環口 44的第二對接部之點熔 46d，同時在第一對接部及第二對接部個別具 圍熔接部47a及第二全周圍熔接部47b。點熔接 是與第一實施形態形成相同，而第一全周圍熔夺 第二全周圍熔接部47b是與第三實施形態形成|i 第9圖（a)及第9圖（b)是顯示根據本 實施形態的假牙附件。本實施形態之假牙附件 φ 封板5 3的板狀環口 5 4及密封環5 5之間設有N 1 之外，其他與第一實施形態相同。將N i電鍍f 作爲1 5 // m之厚度，則密封板5 3僅用來縮小 徑尺寸。Ni電鍍層54b與密封板53之軟磁性 熔融混合，則改變成非磁性合金，所以可有效 板狀環口 5 4及杯狀環口 5 1之間的磁通洩漏。 第10圖是顯示根據本發明之第六實施形 件。本實施形態之假牙附件，其特徵爲具有： 第二全周圍 中央部，但 性材料，所 的部分是藉 發明之第四 ，具有用來 及用來覆蓋 接部46 a〜 有第一全周 部46a〜46d 妾部47a及 司樣。 發明之第五 ，除了在密 ί電鍍層5 4 b 匱54b譬如 其部分的半 材料來進行 地用來防止 態的假牙附 具有擴大直 -19- 200528069 徑部6 1 c的杯狀環口 6丨。除此以外之點是與第二實施形態 的假牙附件同樣。因爲作爲磁性間隙可有效地用來防止板 狀環口 64及杯狀環口 6 1之間的磁通洩漏來發揮作用，所 以擴大直徑部61c之半徑方向深度（w-w2)是20〜200/ΖΙΠ 程度爲佳。又擴大直徑部6 1 c的高度h (杯狀環口 6 1之上 端面及段差61d的下端部之距離）是200〜400 // m程度爲 佳。段差61d的傾斜角（與水平線之角度）是〇〜60。爲 _ 佳。第1 0圖之磁性附件，其外觀特徵爲：對於杯狀環口 6 i 的凹部擴大直徑部6 1 c之底部附近的外徑使凹部6 1 c之開 口端附近的領域來進行縮小直徑。 本實施形態之情況，爲了有效防止磁通的洩漏，所以 密封環65之內端部是定位於比永久磁鐵62的側面更內側 爲佳。因此，密封環65之厚度是40〜400 // m程度爲佳。 將本發明根據以下實施例來更詳細加以說明，但本發 明並非限定於此等實施例。 φ 各實施例及各比較例中，將杯狀環口及圓板狀環口藉 由耐腐蝕性軟磁性不銹鋼SUS447〗1 (飽和磁化Bs : 1、28T ) 來形成，並將密封環藉由耐腐蝕性非磁性不銹鋼SUS31 6L 來形成，將圓板狀永久磁鐵藉由Nd-Fe-B系統各向異性燒 結磁鐵（NEOMAX股分有限公司製NMX-48CH，殘留磁通密 度 Βι:: 1.35T，最大能源積（BH) max: 366kJ/m3)來形成。 又永久磁鐵之尺寸是外徑2.55mmX高度0.4mm。 〔實施例1〕 -20- 200528069 使用第1表所示尺寸之杯狀環口及密封板。該密封板 是在圓板狀環口用之圓棒來嵌入密封環儘可能圓筒材，將 拉拔加工後的圓筒材切片成厚度〇.2mm之後，在還原性大 氣中以800 °C來熱處理，到室溫爲止進行冷卻。所獲得之 密封板是在圓板狀環口的外周圍輕輕地來接合密封環。如 第1圖（b )所示之組合，沿著如第2表所示直徑2 · 的圓周（將第1圖（a)之點0作爲中心）以90°的等角 度間隔藉由0 · 5mm之點直徑的雷射光根據點熔接來進行暫 β 時固定，其次同樣沿著直徑2 · 4mm之圓周藉由〇 · 5mm的|占 直徑之雷射光來進行全周圍熔接〔第1圖（c)〕。如第3 圖（b )所示，熔接之後的杯狀環口 1是僅來縮小z ’之開 口部。這是，因爲在塡補杯狀環口 1及密封板3的間隙χ 方向用來變形杯狀環口 1之開口端附近的領域。最後來進 行拋光硏磨到0.05mm之深度δ爲止，將熔接面使最大面 粗度Rmax加工成l//m以下，來製作第1圖（a)及（d) φ 所示假牙附件。平面加工後之熔接部的深度是0 · 1 mm很均 勻。平面硏磨後在8 0 0 °C之氬大氣中進行1小時熱處理後。 杯狀環口 1的開口部外徑之縮小量是平面硏磨後減少成z (第3表中之値）〔第1圖（d)〕。如第1圖（d)所示， 在平面硏磨後將磁性附件來進行磁化。 對於所獲得之假牙附件，來測定杯狀環口 1及密封_ 5之間有無毛邊、杯狀環口 1的外徑之誤差及減少量z、 密封板3的凸出量t、及磁性吸引力。將測定結果顯示於 -21 - 200528069 第3表。 磁性吸引力之測定，是使用第2 3圖所示的裝置。該 測定裝置，具備：用來固定假牙附件90之吸盤93、及在 吸盤93介於接合器94來連接的數位壓力計95、及來移動 數位壓力計95之微動裝置96、及用來支撐微動裝置96的 試驗台97、及來支撐定位片在試驗台所固定之支撐構件 92。使固定於吸盤93之假牙附件90及固定於支撐構件92 的定位片9 1在吸著狀態下，使微動裝置9 6慢慢地上昇， ^ 當假牙附件90從定位片91分離時來讀取數位壓力計95 之値。還有對於1 0個假牙附件90來進行磁性吸引力測定， 將所獲得之値的平均値作爲磁性吸引力。 〔實施例2〜6〕 來使用第1表所示之杯狀環口及密封板（密封板皆與 實施例1同樣在圓板狀環口的外周圍來輕輕地接合密封 環），如第5圖所示之組合，來覆蓋第2表所示杯狀環口 2 1 φ 及密封環25的對接部並沿著直徑2 . 6mm之圓周（將第5 圖（a)之點0作爲中心）以90°的等角度間隔藉由0.2mm 點直徑之雷射光來進行第一點熔接，同時來覆蓋密封環2 5 及板狀環口 24的對接部並沿著直徑2 . 2mm之圓周（將第5 圖（a )之點0作爲中心）以90°的等角度間隔藉由0 · 2mm 點直徑之雷射光來進行第二點熔接，朝向密封板2 3之杯 狀環口 2 1來進行暫時固定。其次沿著第一點熔接的圓周 及同樣直徑2.6mm之圓周藉由0.2mm點直徑的雷射光來進 -22- 200528069 行第一全周圍熔接，同時沿著第二點熔接的圓周及同樣直 徑2.2mm之圓周藉由〇.2mm點直徑的雷射光來進行第二全 周圍熔接〔第5圖（d)〕。最後到〇.〇5mm之深度爲止來硏 磨並將熔接面進行平坦化，用來製作第4圖（a )及（b ) 所示的假牙附件。對於所獲得之假牙附件，與實施例1同 樣，來測定杯狀環口 2 1及密封環25之間有無毛邊、杯狀 環口 2 1的外徑之誤差及減少量z、密封板2 3的凸出量t、 及磁性吸引力。將測定結果顯示於第3表。 〔實施例7〕 除了分別將第2表所示點熔接及全周圍熔接用之雷射 光的點直徑作爲0 . 3mm之外其他與實施例2同樣，用來製 作第6圖所示假牙附件，並來測定特性。將測定結果顯示 於第3表。 〔實施例8〕 與第2表所示實施例7同樣除了進行全周圍熔接之外 其他與實施例1同樣，用來製作第8圖所示假牙附件，並 來測定特性。將測定結果顯示於第3表。 〔實施例9〕 除了在板狀環口及密封環之間設有厚度15//m的Ni 電鍍層之外其他與第1實施例同樣，用來製作第9圖所示 假牙附件，並來測定特性。將測定結果顯示於第3表。 〔實施例1 0〜1 4〕 如第1表所示除了使用在凹部6 1 ’具有段差6 1 d之杯 -23- 200528069 狀環口之外其他與實施例2〜6同樣，用來製作第1 0圖所 示的假牙附件。將熔接部之剖面的顯微鏡照片顯示於第1 1 圖（a )及（b )。從對應於第1 1圖（a )及（b )之顯微鏡 照片的第1 2圖（a )及（b )明白顯示，杯狀環口 71之凹 部開口端近傍的外側面是對於垂線U_U (垂線U-U是平行 於永久磁鐵7 2之左端側輪廓線或右端側輪廓線V - V )稍微 傾斜於內側（直線T - T )。通過假牙附件的表面之直線S - S 上的垂線U - U及直線T - T之距離z是顯示杯狀環口 7 1的 ® 外直徑之減少量。將各假牙附件的特性之測定結果顯示於 第3表。 從第1 2圖（c )，對於杯狀環口 71之凹部的擴大直徑 部之底附近（位置P)中的外直徑Dob使前述凹部之開口 端（値置Q )的外直徑Dou進行縮小（Dob > Don )。還有， 從擴大直徑部之底部附近（位置P)到凹部開口端（位置 Q )爲止’杯狀環口 71的寬度w2是不變。 I 〔實施例1 5〕 除了分別將第2表所示點熔接及全周圍熔接用之雷射 光的點直徑作爲0 · 3mm之外其他與實施例1 〇同樣，用來 製作假牙附件。將熔接部之剖面的顯微鏡照片顯示於第1 3 圖（a)及（b)。又第14圖（a)及（b)是對應於第13 圖（a )及（b )之顯微鏡照片的線圖，第14圖（c )是顯 示假牙附件全體的剖面形狀。將該假牙附件的特性之測定 結果顯示於第3表。 -24· 200528069 〔比較例1〕 如第1表及第2表所示，與實施例1同樣使用杯狀環 □及密封板（兩者之間隙是3 0 # m )，不進行點熔接與實施 例1同樣進行全周圍熔接時，如第1 5圖所示，密封板1 〇 3 完全由杯狀環口 1〇1凸出於上面，而不能完成全周圍熔接 (參考第3表）。 〔比較例2〕 如第1表及第2表所示，與實施例7同樣使用杯狀環 ® 口及密封板（兩者之間隙是3 0 // m )，不進行點熔接與實施 例7同樣進行全周圍熔接時，密封板完全由杯狀環口凸出 於上面，而不能完成全周圍熔接。 〔比較例3〕 如第1表及第2表所示，將密封板之外徑及杯狀環口 凹部的內徑作爲同樣，除了將密封板壓入於杯狀環口之凹 部之外其他與實施例1同樣，用來製作假牙附件。壓入密 φ 封板是麻煩的作業。所獲得之假牙附件，如第1 6圖所示， 在杯狀環口 201及密封環20 5之間具有毛邊201b，又杯狀 環口 2 0 1是在外側稍有變形。其變形方向是與本發明的假 牙附件之情況相反，所以將變形量z (外周圍2 0 1 R之半徑 -外周圍201r的半徑）以負號來顯示。201R是顯示全周圍 熔接後之外周圍，2 0 1 r是顯示壓入後熔接前的外周圍。將 假牙附件之特性的測定結果顯示於第3表。 如第16圖所示，藉由全周圍熔接使杯狀環口 201之 -25- 200528069 端面的外周圍從201 r擴張到20 1R，而杯狀環口 201 面的面積是增大到SR〔=SrXa (α是定數、α>1)〕 永久磁鐵202所產生之磁通是不變化，所以杯狀環口 的端面之面積及由此產生的磁通之關係，是根據Β X S r X SR (B及Sr是面積擴張前的磁通密度及端面之面積， 及SR是面積擴張後的磁通密度及端面之面積）所表示 此，Β’ =Β/ α。磁性吸引力，是通過磁通的面積及磁 度之平方積的比例，所以擴張後之磁性吸引力F ’及 前的磁性吸引力F之比，成爲（SR X Β’ 2) / ( Sr X Β2 ) /Β=1/α。這樣一來，藉由壓入來擴張杯狀環口 201 周圍，則使磁性吸引力下降。 相對地，各實施例之磁性附件，皆是使杯狀環口 面面積S(=SmXBm/Bs)成爲最適當（<Sr<SR)所設 B s是杯狀環口之飽和磁性，Bm是永久磁鐵的殘留磁 度’ Sm是永久磁鐵之剖面積。還有，前述環口端面的 比S形成更小則使磁通之通過變壞（引起局部的磁 和）’所以形成顯著地磁通洩漏，會使磁性吸引力大 地下降。本發明是來收縮杯狀環口的外周圍之情況下 計所獲得最適合的S，所以用來增加磁性吸引力。第 所示比較例5之磁性吸引力的測定結果是比實施例1 定結果顯示更低。 第1 7圖，是顯示當密封板壓入於杯狀環口 2 1 1 在杯狀環口 2 1 1及密封環2 1 5之對接部的其中一方側 之端 。從 201 =B， B， 。因 通密 擴張 =B, 的外 之端 言十。 通密 面積 性飽 幅度 來設 3 表 之測 時， 產生 -26- 200528069 間隙之情狀。杯狀環口 2 1 1的內徑及密封板之外徑是相等， 所以將密封板的外周圍之一端放入在杯狀環口 2 1 1的開口 部，則必然地使密封板之外周圍的另一端掛在杯狀環口 2丄丄 之開口緣部上。這樣的狀態下將密封板來壓入在杯狀環口 2 1 1的開口部內，則在對接部使杯狀環口 2 1 1及密封板至 少其中一方被削減而產生毛邊，同時在具有對接部中之毛 邊的部分產生間隙。第1 7圖所示之樣品，是板狀環口 2 ! 4 及密封環2 1 5被強固地固裝，所以在對接部不會產生間隙。 第18圖，是顯示板狀環口 304及密封環305未被強 固地固設當密封板壓入在杯狀環口 3 0 1時，分別在杯狀環 口 301及密封環3 0 5之對接部、及板狀環口 3 04及密封環 3 05的對接部之其中一方側產生偏移的間隙之情況。第！ 9 圖是第18圖的部分A放大圖，第20圖是其部分之顯微鏡 照片。從第19圖及第20圖明白顯示，在杯狀環口 301及 密封環3 0 5的對接部是殘留著毛邊30 5b。 第2 1圖是顯示第20圖之樣品的對接部附近之顯微鏡 照片，第2 2圖是對應於此的槪略圖。壓入前之密封環3 0 5 是剖面長方形狀，所以可知使密封環3 0 5的外端部被削減。 在密封環 3 05之角部及杯狀環口 301之間確認有毛邊 301b 、 305b 〇 〔比較例4〕 如第1表及第2表所示將密封板之外徑及杯狀環口的 凹部之內徑作爲同樣，除了將密封板壓入於杯狀環口的凹 -27- 200528069 部之外其他與實施例7同樣，用來製作假牙附件。密封板 之壓入是麻煩的作業。將所獲得假牙附件之特性的測定結 果顯示於第3表。第3表所示比較例4之磁性吸引力的測 定結果是比實施例1之測定結果顯示更低。 〔比較例5〕 如第1表及第2表所示除了在板狀環口及密封環之間 設有厚度1 5 // m的N i電鍍層之外其他與比較例5同樣用 來製作假牙附件，並用來測定特性。將結果顯示於第3表。 第3表所示比較例5之磁性吸引力的測定結果是比實施例 1之測疋結果顯不更低。又幣封板的壓入是麻煩的作業。 〔比較例6〕 如第1〜3表所示除了將杯狀環口及密封板之間隙x 作爲7 0 # m之外其他與實施例1同樣用來製作假牙附件， 並用來測定特性。第3表所示比較例6之磁性吸引力的測 定結果是比實施例1之測定結果顯示更低。將結果顯示於 第3表。又密封板的壓入是麻煩的作業。又表面硏磨後由 於溶接使凹部殘留而不能獲得平滑的面，不能提供實際使 用0 -28- 200528069200 ^ 28069 IX. Description of the invention: [Technical field to which the invention belongs] The present invention relates to a denture attachment and a method for manufacturing the same. The permanent magnet is used to maintain the denture by using magnetic attraction. [Prior art] As disclosed in Japanese Patent Laid-Open No. 4_22 7 2 5 3, as shown in FIG. 24, it has a permanent tooth 402 with an internal permanent magnet 402 at the same time embedded in the artificial tooth bed 420, and The soft magnetic positioning piece 423 provided in the root plate 422 embedded in the alveolar 421, and the artificial tooth 420 held in the root plate by the magnetic attraction of the permanent magnet 402 and the positioning piece 423. The denture attachment 400 has a concentric shape of a sealing disk 4 1 4 made of soft magnetic stainless steel and a sealing ring 4 1 5 made of nonmagnetic stainless steel at the opening portion of the cup-shaped ring opening 40 1 made of soft magnetic stainless steel. The structure of the permanent magnet 402 is welded by welding the entire circumference between the sealing disk 4 1 4 and the sealing ring 4 1 5 and between the sealing ring 4 1 5 and the cup-shaped ring opening 4 0 1. The denture attachment 400 is harmless to the human body, has a chemical stability over a long period of time, and can be used to meet the requirements of large attractive forces. Due to such a structure, the magnetic accessory 400 shown in FIG. 25 has a slight gap between the cup-shaped ring opening 401 and the seal ring 415 due to the processing size error before welding. The welding of the cup-shaped ring mouth 401 and the seal ring 415 is performed by mixing the molten metal of the two to repair the gap. However, the magnetic attachment 4 0 0 is used to weld the gap in one direction with the molten metal to fill the surroundings. Therefore, the sealing ring 4 1 5 is stretched when the molten metal is cooled and shrinks the welded portion. Since the gap of the non-welded portion is widened, it can be seen that there is a problem that the sealing circular plate 4 1 4 is greatly inclined. Tilt the sealing disc 4 1 4 during welding 2005 * 28069. This will not only widen the gap between the sealing disc 4 1 4 and the cup-shaped ring opening 4 0 1, but also make the unfused portion protrude between the two. Generate a step difference. As a result, a welded portion where the range and depth of fusion are not fixed is formed. As a result, the joint strength is weakened, the sealing performance is insufficient, and the manufacturing yield is reduced. Japanese Patent Laid-Open No. 4 3 7 5 76 discloses a denture attachment having a structure shown in FIG. 26. The denture attachment 500 in FIG. 26 is a magnet ring 502 and a soft magnetic cup ring® with a recess for receiving the magnet body 502. The mouth 5 0 1 and the magnet ring 502 are enclosed in the cup ring. The sealing plate 5 1 3 is fitted to the opening of the port 5 0 1. The sealing plate 5 1 3 is a soft magnetic plate-shaped ring port 5 1 4 and a metal cladding (c 1 ad) on the outer periphery. The non-magnetic sealing ring 5 1 5 is joined, and the plate-shaped ring opening 5 1 4 and the non-magnetic sealing ring 5 1 5 and the cup-shaped ring opening 501 are welded together at least on the surface side. The magnetic attachment 500 shown in FIG. 26 is a denture that presses the sealing plate 513 into the opening portion of the cup-shaped ring opening 50 1 to prevent the sealing plate from tilting during peripheral welding. When the accessory 500 is combined, it is difficult to press the plate-shaped ring 5 1 4 completely into the opening of the cup-shaped ring 5 0 1. Usually, the plate-shaped ring 5 1 4 is pressed in. The cup-shaped ring opening 501 is welded in a slightly inclined state. As a result, there still occurs a problem that the welding range and depth of fusion are not fixed. In addition, the small plate-shaped ring 5 1 4 still needs to be pressed into the small cup-shaped ring 5 0 1. The operation must have precise control, which is not only difficult to automate, but also has low productivity due to trouble. . -6- Ϊ00528069 [Summary of the invention] Therefore, the object of the present invention is to provide a denture attachment, which allows the recess of the cup-shaped ring to be sealed with superior quality, has high magnetic adsorption force, and good corrosion resistance. Another object of the present invention is to provide a manufacturing method which can improve the production qualification rate of such denture attachments. [Disclosure of the Invention] The denture attachment according to an embodiment of the present invention is characterized in that it includes a permanent magnet and a cup-shaped ring made of a corrosion-resistant soft magnetic material having a recess for accommodating the permanent magnet. And a sealing plate embedded in the opening of the recess of the cup-shaped ring, and the sealing plate is a plate-shaped ring made of a corrosion-resistant soft magnetic material, and the outer periphery of the plate-shaped ring is formed by The corrosion-resistant non-magnetic material is used to form a seal ring, and the cup ring is covered by at least a point welding portion for fixing the cup ring opening and a plurality of parts of the butt joint portion of the seal ring, and the cup ring At least one all-around welded portion formed by the butt joint between the port and the seal ring φ and the butt joint between the seal ring and the plate-like ring mouth, and joining the seal plate to the cup-shaped ring mouth, so that the aforementioned permanent The magnet is sealed. A magnetic attachment according to a preferred embodiment of the present invention includes a permanent magnet and a cup-shaped ring made of a corrosion-resistant soft magnetic material having a recessed portion for accommodating the permanent magnet and having an enlarged diameter near the open end. 'And the sealing plate embedded in the enlarged diameter portion of the cup-shaped ring port', and the sealing plate is a plate-shaped ring made of a corrosion-resistant soft magnetic material, and the outer periphery of the plate-shaped ring port is formed by The corrosion-resistant non-magnetic 2005 ^ 28069 material is used as a seal ring, and at least the spot welding of the enlarged diameter portion and the abutment portion of the seal ring of the cup-shaped ring mouth is fixed at least. And at least one all-around welded portion formed by the enlarged diameter portion of the cup-shaped ring mouth and the abutment portion of the seal ring and the abutment portion of the seal ring and the plate-shaped ring mouth, and sealing the seal. Since the plate is joined to the cup-shaped ring port, the permanent magnet is sealed with a magnetic gap provided between the enlarged diameter portion and the permanent magnet. Practically, the step difference between the enlarged diameter portion and the concave portion is preferably 20 to 200 // m. A denture attachment according to another embodiment of the present invention includes a permanent magnet, a cup-shaped ring made of a corrosion-resistant soft magnetic material having a recess for accommodating the permanent magnet, and a cup shape The sealing plate embedded in the opening of the recess of the ring mouth, and the sealing plate is a plate-shaped ring mouth made of a corrosion-resistant soft magnetic material, and the corrosion resistance provided on the outer periphery of the plate-shaped ring mouth A uranium-based non-magnetic material is used to form a sealing ring, and at least one of φ is formed by covering the abutment portion of the cup-shaped ring mouth and the seal ring, and the abutment portion of the seal ring and the plate-shaped ring mouth. The entire welding portion is welded and the sealing plate is joined to the cup-shaped ring mouth, so that the permanent magnet is sealed, and the area near the open end of the cup-shaped ring mouth is substantially constant in width and reduced in diameter. A magnetic accessory according to another embodiment of the present invention is characterized by having a permanent magnet and a cup-shaped ring made of a corrosion-resistant soft magnetic material having a recess near the open end while accommodating the permanent magnet. 200528069 mouth, and a sealing plate embedded in the enlarged diameter portion of the cup-shaped mouth, and the seal plate is a plate-shaped mouth made of a corrosion-resistant soft magnetic material, and outside the plate-shaped mouth The periphery is composed of a sealing ring made of a non-corrosive non-magnetic material, and covers the enlarged diameter portion of the cup-shaped ring mouth and the abutting portion of the sealing ring, the sealing ring and the plate-shaped ring. At least one full-circumferential welded portion formed by the butt joint portion of the mouth, and the sealing plate is joined to the cup-shaped ring mouth. Therefore, the permanent magnet is made in a state where a magnetic gap is provided between the enlarged diameter portion and the permanent magnet. At the same time, the magnet is sealed, and at the same time, the area near the open end of the cup-shaped ring is substantially constant in width and reduced in diameter. Practically, the step difference between the enlarged diameter portion and the concave portion is preferably 20 to 200 // m. The point welding portion is only (a) the abutment portion of the cup-shaped ring mouth and the seal ring, or (b) the abutment portion of the cup-shaped ring mouth and the seal ring, and the seal ring and the plate ring It is preferable that both sides of the mouth butt joint are formed. It is preferable that the point welding portions are substantially at regular intervals. The all-around welding portion is a first welding portion formed by covering the entire periphery (a) the butt joint between the cup-shaped ring mouth and the sealing ring, and covering the sealing ring and the plate-shaped ring across the entire periphery. It is formed by the second welding part formed by the butt joint of the mouth, or covers the entire periphery (b) The butt joint between the cup-shaped ring mouth and the seal ring, and the butt joint between the seal ring and the plate-shaped ring mouth. An integrated welded portion is preferred. It is preferable that the surfaces of the sealing plate and the cup-shaped ring mouth be welded to the entire surface and then processed flat. 200528069 The manufacturing method of the denture attachment of the present invention is characterized in that a permanent magnet is housed in a recess of a cup-shaped ring formed of a corrosion-resistant soft magnetic material, and a plate-shaped ring of a corrosion-resistant uranium soft magnetic material is arranged in the recess. A sealing plate made of a sealing ring of uranium non-magnetic material around the outside is inserted into the opening portion of the cup mouth. At least the pair of the cup-shaped ring mouth and the sealing ring are welded at a plurality of points to cover the cup. The abutment portion of the ring-shaped mouth and the ring, and the abutment portion of the seal ring and the plate-shaped ring, are welded around the cup-shaped ring mouth and the seal plate around. ® Only used to fix (a) the part of the cup ring and the sealing ring, or once (b) to fix the cup ring and the tight butt, and the sealing ring and the plate ring It is preferable that the butt joints of the mouth are welded at plural points. It is used to form a first welded portion that covers (a) the butt joint of the cup-shaped ring mouth seal ring and a second welded portion that covers the butt-joint portion of the seal ring and the plate ring mouth over the entire circumference. Or | The entire periphery is integrated to cover (b) the cup-shaped ring mouth and the sealing ring joint portion, and the abutting portion of the sealing ring and the plate-shaped ring mouth, and it is better to perform the fusion around the entire periphery. After welding all around, it is better to process the aforementioned sealing plate and front ring. [Embodiment] The denture attachment of the present invention will be described with reference to the delivery plan and described below, but the base corrosion of the part with the same single digit reference number will be sealed by the corrosion-resistant ring joint to fully butt the seal ring The previous and the previous -u · 盍 刖 span across the previous cup. Detailed text-10-200528069 The parts are common to each embodiment, so only the description of the first embodiment is omitted, and the following embodiments are omitted Its detailed description. Figures 1 and 2 show a denture attachment according to a first embodiment of the present invention. The basic structure of the denture attachment is the same as the structure shown in FIG. 25, and a cup-shaped ring 1 made of a soft magnetic material formed by a concave portion of a circular cross section 1, a permanent magnet 2 accommodated therein, and a concave portion 1 ' The opening portion is formed by the sealing plate 3 fitted therein. The sealing plate 3 is a member used to seal the permanent magnet 2 in the recess 1 ′ and to form a magnetic circuit. The sealing plate 3 is a circular plate-shaped ring 4 made of soft magnetic material, and is mounted on its outer peripheral surface. The sealing plate 5 is made of a non-magnetic material having the same width. The shapes of the cup ring 1 and the sealing plate 3 are not limited to a circular shape, and a polygonal shape such as an oval shape or a quadrangular shape may be used. In the present invention, the cup-shaped ring plate and the plate-shaped ring mouth are preferably made of corrosion-resistant soft magnetic stainless steel (for example, SUS447J1, SUSXM27, SUS444, etc.). It is preferable that the seal ring is made of corrosion-resistant non-magnetic stainless steel (for example, SUS3 16L). In order to improve the combination efficiency of the denture attachment, the sealing plate 3 is a plate-like ring opening 4 that is embedded with a non-magnetic cylindrical material as far as possible with a round rod of soft magnetic material and a sealing ring 5 as much as possible. It is preferably formed by slicing into a predetermined thickness. The sealing plate obtained by slicing is heat-treated in a reducing atmosphere at 600 to 880 ° C for 0.5 to 10 hours, preferably at 700 to 850 ° C for 1 to 8 hours, and cooled to room temperature. If the heat treatment condition is less than 60 ° CX 0 · 5 hours, it will be completed between the plate-shaped ring port 4 and the sealing ring 5-11-200528069 No bonding will occur, and the temperature will exceed 8 80 ° CX 0.5 hours. The interface of the plate-shaped ring mouth 4 and the sealing ring 5 is fused, and the magnetic attractive force of the denture attachment obtained as shown in the following 3 is very low. As a result, the plate-shaped ring opening 4 is made as thin as possible (lightly) and the plate ring and the sealing ring 5 are joined as lightly as possible. The term "thinly (lightly means that the melting rate at the joint interface between the circular plate body and the cylindrical material is 10% or less, particularly 5% or less. It is also possible to perform pre-heat treatment before slicing. B The sealing plate 3 and the cup-shaped ring mouth 1 are manufactured separately, so there is an error in the fitting size. Therefore, as in the prior art, the denture attachment sealing plate 3 is pressed into the cup-shaped ring mouth 1, and the outer diameter of the sealing plate 3 is cupped. If the inner diameter of the ring-shaped opening 1 is slightly smaller, it is preferable that the sealing plate 3 can be easily shaped like the opening of the ring-shaped opening 1. The gap X between the sealing plate 3 and the cup-shaped opening 1 is obtained by welding in order to reliably enter. As 10 to better. As shown in Fig. 1 (1), the clearance X is (cup ring: φ-(outer diameter of the sealing plate 3). As shown in Fig. 1 (b), the sealing plate 3 'is The upper surface of the permanent magnet 2 housed in the recess Γ of 1 is tightly fitted into E. At this time, the upper surface of the sealing plate 3 is aligned with the upper surface of the cup-shaped ring port 1. The sealing plate 3 and the cup-shaped ring port 1 Laser or electronic connection, and the internal permanent magnet 2 is sealed in the ring mouth and connected with the mouth. The welding part covers the sealing plate 3 and the cup-shaped ring mouth 1 A plurality of spot welding portions 6 are provided, and the cup-shaped ring is covered [the heat treatment is described in the comparative example, and the heat treatment can be performed lightly on the cylindrical material. ' Seal to the cup line, 60 // m is [inner diameter] Cup-shaped ring mouth 丨 part 1 ′ The shape of the surface is roughly shaped by the beam and the outside is sealed by the butt joint 3 1 and the seal -12- 200528069 The butt joint of the seal ring 5 It is constituted by the entire peripheral welding portion 7 formed by the abutment portion of the seal ring 5 and the plate-shaped ring port 4. The spot welding portion 6 is a portion that is fused and solidified (welded) by laser light for spot irradiation. At this time, it is sufficient to move the laser light slightly. In the first embodiment, the diameter of the laser spot is a portion of the cup-shaped ring opening 1 and the plate-shaped ring opening 4 that is held by the holding sealing ring 5. Therefore, the plate-shaped ring port 4 is integrally fixed to the cup-shaped ring port 1 by the spot welding portion 6. However, this is not necessary. _ When the seal ring 5 and the plate-shaped ring port 4 are firmly fixed by drawing, 'at least the butt joint of the cup-shaped ring port 1 and the seal ring 5 is fixed by the point welding part 6. Just fine. The spot welding portion 6 is preferably provided with a plurality of locations (for example, 2 to 8 locations) at approximately equal intervals (point symmetry) with respect to the center axis of the sealing plate 3. In the example shown in the figure, the spot welding portion 6 is composed of four spot welding portions 6a to 6d. In this embodiment, as shown in FIG. 1 (c), the entire periphery welding portion 7 is integrated over the entire periphery to cover the butt φ portion of the cup ring 1 and the seal ring 5, and the seal ring 5 and the plate ring. 4 butt joint formed. It is preferable that the integrated all-around welding portion 7 has a narrow width of the seal ring 5 such as less than 1/2 of the spot diameter. The all-in-one welding portion 7 is formed by holding the sealing ring 5 on the cup-shaped ring opening 1 and the plate-shaped ring opening 4 at the same time by irradiating laser light. The cup-shaped ring opening 1 has the same width w from the vicinity of the bottom surface of the recessed portion 1 'to the vicinity of the open end. As shown in Figure 1 (c), the denture attachment after full-peripheral welding is reduced to the outer diameter Dob near the bottom surface of the recess 1 ′ of the cup-shaped ring opening 1 -13- 200528069 The outer diameter Dou near the open end of the recess 1 ( Dob > Dou '). In addition, as shown in Fig. 1 (d), after the plane processing, the outer diameter Dou 'becomes Dou. It is considered that the phenomenon of reducing the outer diameter near the open end is caused by the following reasons. The outer diameter near the open end of the recessed portion of the cup-shaped ring mouth 1 when the cup-shaped ring mouth 1 and the seal ring 5 are temporarily fixed by spot welding is not reduced. This is because the spot welding portions 6 a to 6 d generate contraction force at the welding point when they are solidified after melting. However, the spot welding portions 6 a to 6 d have a small volume, so the cup-shaped ring opening 1 cannot be pulled to the front. . If you start ® to perform all-around welding, the melted butt joints (weld joints) are solidified and contracted. Therefore, the cup ring opening 1 and the seal ring 5 exert a tensile force on the weld joints. At this time, the seal ring 5 is fixed on the unsealed side of the cup-shaped ring opening 1 by the point welding portion 6, so that it will not deform even if it is stretched in the welding portion. On the other hand, the cup-shaped ring opening 1 is not fixed at the outer periphery, so it is stretched at the welded portion, and deforms a little. The position of the laser irradiation is shifted in the peripheral direction and the entire peripheral welding is performed. Then, the opening φ near the opening end of the cup-shaped ring mouth 1 is pulled a little closer to the side of the welding portion. At the stage for welding the entire periphery, The formation shrinks evenly. In addition, when spot welding is used for temporary fixing and all-around welding is performed, the unfixed sealing ring is strongly pulled in the welding portion, and the sealing plate is greatly protruded. As shown in Fig. 1 (d), the welding surfaces of the sealing plate 3 and the cup-shaped ring port 1 are flat-processed by honing or the like. The flat surface 9 is formed by removing the local unevenness of the welded portion by planar processing. The smooth surface 9 of the denture attachment is in good contact with the root panel buried in the alveolar groove, so it will not disturb the magnetic flux -14- 200528069. As a result, the denture used to mount the denture attachment of the present invention can be firmly held in the alveolar groove. Fig. 2 shows the manufacturing process of the denture attachment of Fig. 1 (a). First, the permanent magnet 2 is housed in a recessed portion? Of the circular cross section of the soft magnetic cup-shaped ring opening 1, and the sealing plate 3 is fitted into an opening portion of the recessed portion 1 '. The front end portion of the inclined pressing member 3a is shielded at approximately the center of the sealing plate 3 to fix the sealing plate 3 [process (a)]. In this state, the abutment portion 1 a of the cup-shaped ring opening 1 and the seal ring 5 and the abutment portion 4 a of the seal ring 5 and the plate-shaped ring opening 4 are covered. 6 A-6 b — 6 c — 6 d in order [process (b)]. Using the laser irradiation device 3 b, by performing spot welding in the order of 6a-> 6b-6c-6d on the diagonal, the sealing plate 3 receives a small contraction force when the molten metal is cooled and solidified, and the balance can be achieved. Therefore, it can be used to prevent the sealing plate 3 from protruding as in the prior art. With the obtained point welding portions 6 a to 6 d, the sealing plate 3 is firmly fixed at the cup-shaped ring opening 1. As the sealing plate 3, after the plate-shaped ring port 4 and the sealing ring 5 are integrated by drawing, the point welding may be performed only when the sealing plate is fused by using a heat-sealed joint, or the sealing plate may be used. The sealing ring 5 and the abutment portion 1 a of the cup-shaped ring port 1 are performed. [Process (c)] after removing the pressing member 3a, cover the butt joint portion 1a of the cup ring opening 1 and the sealing ring 5 with the continuous or intermittent laser light of the spot diameter, and the sealing ring 5 and The butt joint portion 4 a of the plate-shaped annular opening 4 is used to form the entire peripheral weld portion 7 [process (d)]. The sealing plate 3 is fixed at the cup-shaped ring mouth 200528069 1 at approximately equal intervals. Therefore, the sealing plate 3 does not shift when the entire periphery is welded, and a uniform all-around welded portion 7 can be obtained under stable welding conditions. The shape, amount, and depth of fusion of the fused portion are completely sealed by the welding bead across the entire periphery, and the opening of the cup ring 1 is completely sealed, while the permanent magnet 2 is air-tightly blocked from the outside. It is preferable to use laser light for all-around welding as the laser light for spot welding and the same spot diameter. Fig. 3 (a) shows the surface states of the cup-shaped ring opening 1 and the sealing plate 3 after the entire periphery is welded, and Fig. 3 (b) is a sectional view showing the same. In this example, the point welding portions 6a to 6d are covered by the entire surrounding welding portion 7, but the point of the drawing number 7 'is the end of the surrounding welding portion. Fix the cup-shaped ring mouth 1 after welding to a flat honing machine, and perform the plane processing (honing) of the welding surface of the cup-shaped ring mouth 1 and the sealing plate 3 at a predetermined depth (5) [process (e )]. The depth of cut (5, is the same height as the cup ring 1 and the sealing plate 3, and at the same time do not leave the unevenness of the entire welding portion 7 around, as about 10 / zm ~ 100 / zm, preferably 40 / zm zm ~ 60 // m. (Under 5 will be 10 / zm, there will be unevenness on the surface. One of the 5 is more than 1 0 0 // m, the volume of the welded part becomes too small and the welded strength will be reduced. The sealing plate 3 will not Inclined in the cup-shaped ring mouth 1 is welded in parallel, so the shape, amount of melted part and depth of fusion of the melted part after plane processing are also approximately uniform across the entire circumference. The melted part does not become locally shallow or creates through holes to reduce sealing. Stabilize the non-magnetic phase (a stenite (austenite) "steel structure" phase of the welded part and deteriorate it by mechanical distortion of permanent magnets 16-200528069 installed in magnetic accessories For the purpose of magnetic recovery 'after plane processing Process is preferred. The heat treatment atmosphere is an inert gas' 600 ~1100 ° C X0. 5 to 10 hours, preferably 70 to 900 ° C X0. After heating for 5 hours, it is better to cool down to room temperature. Heat treatment conditions are not up to 600 ° C X 0. After 5 hours, the effect of heat treatment is insufficient, and if it exceeds 1100 ° CX for 10 hours, the magnetic force is greatly reduced due to the coarsening or re-sintering of the crystal particles of the permanent magnet, and the thermal deformation of the cup ring and the sealing plate cannot be ignored. . Finally, magnetization is performed to obtain the denture attachment of the present invention. ® As shown in Figure 1 (c), for the gap X between the cup ring 1 and the sealing plate 3, the cup ring 1 is deformed only on the inner side after welding all around. The sealing plate 3 is fixed to the cup-shaped ring opening 1 by spot welding, and further welding is performed around the entire circumference. Therefore, deformation occurs substantially uniformly in the peripheral direction. The amount of deformation z is about half of the gap X. After all, the amount of deformation toward the inside of the cup-shaped ring mouth 1 is z 'at each end in the diameter direction, so the whole becomes 2 z. For example, when the coin seal plate 3 is thinned by about 20% by plane processing, the deformation amount z after plane processing of φ is about 80% of z. Generally, the amount of deformation z is about 10 to 40 // m. Fig. 4 (a) and Fig. 4 (the denture attachment of the embodiment, the fifth embodiment 'is used to form the spot welding portion 2 6 e covering the cup-shaped butting portion 2 1 a, the seal ring 25 and the plate-shaped ring mouth 24 of 26f, 26h, 26j, and 261, and at the same time, b) is a diagram showing a manufacturing process of the second diagram according to the present invention. The first 26g &26; 26k and 26k of the real ring port 21 and the seal ring 25, and the first butt joint 21a and the second butt joint 17-200528069 part 24a for covering the first butt joint 2 4 a The first full-peripheral welded portion 27a and the second full-peripheral welded portion 27b are individually formed. Adjacent point welding portions 26e and 26f, 26g and 26h, 26i and 26j, and 26k and 261 do not overlap with each other, and the first and second surrounding welding portions 27a and 27b do not overlap. Since the non-magnetic seal ring 25 is exposed between the first full-circumferential welded portion 27a and the second full-circumferential welded portion 27b, it can be effectively used to prevent short-circuiting of the magnetic flux between the cup-shaped ring opening 21 and the plate-shaped ring opening 24. . The manufacturing method of the denture attachment of the second embodiment is the same as that of the first embodiment except that it is used to form the spot welding portions 26e to 261 and the surrounding welding portions 27a and 27b individually. 6 (a) and 6 (b) show a denture attachment according to a third embodiment of the present invention, and FIG. 7 shows a manufacturing process thereof. The denture attachment of this embodiment has point welding portions 36e, 36g, 36i, 36k for covering the cup-shaped ring opening 31 and the first butting portion 31a of the sealing ring 35, and covers the sealing ring 35 and the plate shape. The spot welding portions 36f, 36h, 36j, and 36b of the second butting portion 34a of the ring mouth 34 have the first and second surrounding portions 31a and 37a and the second all surrounding portions respectively in the first butting portion 31a and the second butting portion 34a. 37 b is the same as the second embodiment, but the adjacent welding portions 36e and 36f, 36g and 36h, 36i and 36j, and 36k and 361 overlap, and the first all-around welding portion 37a and the second all-around The welding portion 37b also overlaps, and is different from the second embodiment. For example, the drawing number 36m is a part where the spot welding parts 36k and 361 overlap, and the drawing number 37c is a part where the first full circumference welding part 37a and the second full circumference welding part 37b overlap. As shown by the dotted line in Figure -18-200528069 6 (a), the overlapping portion of the first all-around welding portion 3 7 a and the welding portion 3 7 b is almost not mixed into the cup-shaped ring opening 31 in the seal ring 3 5. Or the soft magnetic of the plate-shaped ring mouth 34 is not a particular problem on the magnetic circuit. The above-mentioned overlap is almost removed by plane processing. Fig. 8 (a) and Fig. 8 (b) show the denture attachment according to this embodiment. The denture attachment of this embodiment covers the first abutment portion of the cup-shaped ring mouth 41 and the seal ring 45, and the point of the second abutment portion of the seal ring 45 and the plate-shaped mouth 44 is melted 46d, and at the same time at the first abutment portion Each of the second butting portions includes a surrounding welding portion 47a and a second all-around welding portion 47b. The spot welding is the same as that of the first embodiment, and the first all-around welding and the second all-around welding portion 47b are formed with the third embodiment. I Figure 9 (a) and Figure 9 (b) are shown The denture attachment of this embodiment. The denture attachment of this embodiment is the same as the first embodiment except that N 1 is provided between the plate-shaped ring opening 5 4 and the sealing ring 55 of the φ sealing plate 5 3. With Ni plating f as a thickness of 1 5 // m, the sealing plate 5 3 is only used to reduce the diameter size. The soft magnetic fusion of the Ni plating layer 54b and the sealing plate 53 is changed to a non-magnetic alloy, so that the magnetic flux leakage between the plate-shaped ring opening 5 4 and the cup-shaped ring opening 51 is effective. Fig. 10 shows a sixth embodiment of the present invention. The denture attachment of this embodiment is characterized in that it has: a second central part of the entire periphery, but a part made of the fourth part of the invention, which is used to cover the contact part 46 a to have a first full circumference Sections 46a to 46d. Fifth invention, in addition to the dense plating layer 5 4 b and 54 b such as part of the semi-material to prevent the state of the denture attached with a cup-shaped ring mouth 6 with enlarged straight -19- 200528069 diameter 6 1 c丨. The other points are the same as those of the denture attachment of the second embodiment. As a magnetic gap, it can effectively prevent the leakage of magnetic flux between the plate-shaped ring opening 64 and the cup-shaped ring opening 61, so the radial depth (w-w2) of the enlarged diameter portion 61c is 20 to 200. / ZΙΠ degree is better. Further, the height h of the diameter portion 6 1 c (the distance between the upper end surface of the cup-shaped ring opening 61 and the lower end portion of the step 61d) is preferably about 200 to 400 // m. The inclination angle (angle from the horizontal line) of the step 61d is 0 to 60. Is _ good. The magnetic accessory of Fig. 10 is characterized in that the outer diameter of the recessed portion of the cup-shaped ring opening 6 i is enlarged near the bottom of the diameter portion 6 1 c to reduce the diameter of the area near the opening end of the recessed portion 6 1 c. In the case of this embodiment, in order to effectively prevent leakage of magnetic flux, it is preferable that the inner end portion of the seal ring 65 is positioned more inward than the side surface of the permanent magnet 62. Therefore, the thickness of the seal ring 65 is preferably about 40 to 400 // m. The present invention will be described in more detail based on the following examples, but the present invention is not limited to these examples. φ In each of the examples and comparative examples, the cup-shaped ring and the disk-shaped ring are formed by corrosion-resistant soft magnetic stainless steel SUS447 [1] (saturated magnetized Bs: 1, 28T), and the seal ring is formed by Corrosion-resistant non-magnetic stainless steel SUS31 6L is used. The disc-shaped permanent magnet is made of Nd-Fe-B system anisotropic sintered magnet (NMX-48CH, manufactured by NEOMAX Co., Ltd., residual magnetic flux density Bι :: 1. 35T, maximum energy product (BH) max: 366kJ / m3). The size of the permanent magnet is 2. 55mmX height 0. 4mm. [Example 1] -20-200528069 A cup-shaped ring port and a sealing plate having the sizes shown in Table 1 were used. The sealing plate is a circular rod used in a circular plate-shaped ring mouth to insert the sealing ring into a cylindrical material as much as possible, and the cylindrical material after drawing is sliced into a thickness of 0. After 2 mm, it was heat-treated at 800 ° C in a reducing atmosphere and cooled to room temperature. The obtained sealing plate was lightly engaged with the sealing ring around the outer periphery of the circular plate-shaped ring opening. As shown in Figure 1 (b), along the circle with a diameter of 2 · as shown in Table 2 (with the point 0 in Figure 1 (a) as the center), at intervals of 90 ° at equal angular intervals, Laser light with a spot diameter of 5mm is temporarily fixed according to spot welding. Secondly, the entire circumference is welded along the circumference of a diameter of 2.4mm with a laser light of 0.5mm in diameter. [Figure 1 (c )]. As shown in Fig. 3 (b), the cup-shaped ring opening 1 after welding is only an opening portion for reducing z '. This is because the area near the open end of the cup-shaped ring mouth 1 is deformed in the direction of the gap χ between the cup-shaped ring mouth 1 and the sealing plate 3. Finally come to polish honing to 0. The welding surface is processed to a maximum surface roughness Rmax of 1 // m or less to a depth δ of 05 mm to produce a denture attachment as shown in Figs. 1 (a) and (d) φ. The depth of the welded part after flat machining is 0 · 1 mm, which is uniform. After plane honing, heat treatment was performed in an argon atmosphere at 800 ° C for 1 hour. The reduction in the outer diameter of the opening portion of the cup-shaped ring opening 1 is reduced to z (値 in Table 3) after flat honing [Fig. 1 (d)]. As shown in Fig. 1 (d), the magnetic attachment is magnetized after the flat honing. For the obtained denture attachment, determine whether there are burrs between the cup-shaped ring mouth 1 and the seal _ 5, the error and reduction amount of the outer diameter of the cup-shaped ring mouth 1, the protrusion amount t of the seal plate 3, and the magnetic attraction. force. The measurement results are shown in Table 3 of -21-200528069. The magnetic attractive force was measured using the device shown in Figs. The measuring device includes a suction pad 93 for fixing the denture attachment 90, a digital pressure gauge 95 connected to the suction pad 93 via an adapter 94, a micro-motion device 96 for moving the digital pressure gauge 95, and a micro-movement device for supporting the micro-motion. The test stand 97 of the device 96 and the support member 92 that holds the positioning piece fixed on the test stand. Make the denture attachment 90 fixed to the suction cup 93 and the positioning piece 9 fixed to the support member 92 1 in the suction state, slowly raise the micro-movement device 96, and read when the denture attachment 90 is separated from the positioning piece 91 Digital pressure gauge 95%. In addition, the magnetic attractive force was measured for 10 denture attachments 90, and the averaged magnetic field obtained was used as the magnetic attractive force. [Examples 2 to 6] The cup-shaped ring port and the sealing plate shown in Table 1 are used (the sealing plates are gently joined to the sealing ring on the outer periphery of the circular plate-shaped ring port as in Example 1), such as The combination shown in Figure 5 covers the abutment portion of the cup-shaped ring opening 2 1 φ and the seal ring 25 shown in Table 2 along the diameter 2.  A circle of 6mm (with the point 0 in Figure 5 (a) as the center) at an equal angular interval of 90 ° with 0. Laser light with a diameter of 2mm is used for the first point welding, and at the same time, it covers the abutment part of the sealing ring 25 and the plate-shaped ring opening 24 and follows the diameter 2.  The 2mm circle (with the point 0 in Figure 5 (a) as the center) is welded at an equal angular interval of 90 ° with the laser light of a point diameter of 0 · 2mm for the second point welding and faces the cup ring of the sealing plate 23 Port 21 is temporarily fixed. Next, follow the circumference of the first point and the same diameter 2. 6mm circumference with 0. The laser light with a diameter of 2mm comes in -22- 200528069. The first full-circle welding is performed along the circumference of the second welding point and the same diameter 2. 2mm circumference by 0. A laser beam with a spot diameter of 2 mm was used for the second full-circle welding [Fig. 5 (d)]. Finally to 〇. Honed to a depth of 〇5mm and flattened the welding surface to make the denture attachment shown in Figures 4 (a) and (b). With respect to the obtained denture attachment, the same as in Example 1 was used to determine the burrs between the cup-shaped ring port 21 and the seal ring 25, and the error and reduction of the outer diameter of the cup-shaped ring port 21, and the sealing plate 2 3 And the magnetic attraction. The measurement results are shown in Table 3. [Example 7] Except that the spot diameter of laser light for spot welding and all-around welding shown in Table 2 was 0.  Other than 3mm, it was used in the same manner as in Example 2 to make the denture attachment shown in Fig. 6 and measure the characteristics. The measurement results are shown in Table 3. [Example 8] It was the same as Example 7 except that the entire peripheral welding was performed in the same manner as in Example 7 except that the artificial tooth attachment shown in Fig. 8 was produced and the characteristics were measured. The measurement results are shown in Table 3. [Embodiment 9] The same as in the first embodiment, except that an Ni plating layer with a thickness of 15 // m was provided between the plate-shaped ring opening and the seal ring, was used to make the denture attachment shown in Fig. 9 and Determine characteristics. The measurement results are shown in Table 3. [Example 1 0 to 1 4] As shown in Table 1, except that it is used in the recess 6 1 ′ cup having a step difference of 6 1 d -23- 200528069, it is the same as in Examples 2 to 6, and is used for making The denture attachment shown in Figure 10. The micrographs of the cross section of the welded part are shown in Figs. 11 (a) and (b). It is clearly shown from Figs. 12 (a) and (b) that the micrographs corresponding to Figs. 11 (a) and (b) show that the outer side near the open end of the recess of the cup-shaped ring 71 is a vertical line U_U ( The vertical line UU is parallel to the left end side contour line or the right end side contour line V-V) of the permanent magnet 72 and is slightly inclined to the inside (straight line T-T). The distance z between the vertical line U-U and the straight line T-T on the surface S-S passing through the surface of the denture attachment is the reduction of the outer diameter ® of the cup ring 7 1. Table 3 shows the measurement results of the characteristics of the respective denture attachments. From FIG. 12 (c), the outer diameter Dob in the vicinity of the enlarged diameter portion (position P) of the recessed portion of the cup-shaped ring 71 is reduced to the outer diameter Dou of the open end (set Q) of the recessed portion. (Dob > Don). The width w2 of the cup-shaped ring opening 71 from the vicinity of the bottom portion (position P) of the enlarged diameter portion to the open end of the recess portion (position Q) is constant. I [Example 1 5] A denture attachment was made in the same manner as in Example 10 except that the spot diameter of the laser light for spot welding and all-around welding shown in Table 2 was 0.3 mm, respectively. The micrographs of the cross section of the welded part are shown in Figs. 13 (a) and (b). Figs. 14 (a) and (b) are line drawings corresponding to the micrographs of Figs. 13 (a) and (b), and Fig. 14 (c) is a sectional view showing the entire denture attachment. Table 3 shows the measurement results of the characteristics of the denture attachment. -24 · 200528069 [Comparative Example 1] As shown in Tables 1 and 2, a cup ring □ and a sealing plate are used in the same manner as in Example 1 (the gap between the two is 30 # m), and spot welding is not performed. In the same manner as in Example 1, when all-around welding is performed, as shown in FIG. 15, the sealing plate 10 is completely projected from the cup-shaped ring opening 101, and the all-around welding cannot be completed (refer to Table 3). [Comparative Example 2] As shown in Tables 1 and 2, a cup ring® mouth and a sealing plate were used in the same manner as in Example 7 (the gap between the two was 3 0 // m), and the spot welding and the examples were not performed. 7 When performing all-around welding, the sealing plate is completely protruded from the cup-shaped ring mouth, and the all-around welding cannot be completed. [Comparative Example 3] As shown in Tables 1 and 2, the outer diameter of the seal plate and the inner diameter of the recess of the cup-shaped ring are the same, except that the seal plate is pressed into the recess of the cup-shaped ring. It is used in the same manner as in Example 1 to make a denture attachment. Pressing a tight φ seal plate is a cumbersome operation. As shown in FIG. 16, the obtained denture attachment has a burr 201 b between the cup-shaped ring opening 201 and the sealing ring 20 5, and the cup-shaped ring opening 201 is slightly deformed on the outside. The deformation direction is opposite to that of the denture attachment of the present invention, so the amount of deformation z (radius of the outer periphery 2 0 1 R-radius of the outer periphery 201r) is displayed with a negative sign. 201R indicates the outer periphery after welding, and 2 0 1 r indicates the outer periphery after welding. Table 3 shows the measurement results of the characteristics of the denture attachment. As shown in Fig. 16, the outer circumference of the end of the cup-shaped ring port 201-25-200528069 is expanded from 201 r to 20 1R by full-circle welding, and the area of the surface of the cup-shaped ring port 201 is increased to SR [ = SrXa (α is a fixed number, α > 1)] The magnetic flux generated by the permanent magnet 202 does not change, so the relationship between the area of the end face of the cup-shaped ring opening and the resulting magnetic flux is based on β XS r X SR (B and Sr are the magnetic flux density before the area expansion and the area of the end surface, and SR is the magnetic flux density after the area expansion and the area of the end surface) are represented by this, B ′ = B / α. The magnetic attractive force is the ratio of the square product of the area of the magnetic flux and the magnetic degree, so the ratio of the expanded magnetic attractive force F 'and the former magnetic attractive force F becomes (SR X Β' 2) / (Sr X Β2) / Β = 1 / α. In this way, by expanding the surroundings of the cup-shaped ring opening 201 by press-fitting, the magnetic attractive force is reduced. In contrast, the magnetic attachment of each embodiment makes the cup ring surface area S (= SmXBm / Bs) the most appropriate ( < Sr < SR) where B s is the saturation magnetism of the cup ring, Bm is the residual magnetism of the permanent magnet 'Sm is the cross-sectional area of the permanent magnet. In addition, if the formation of the annular end face is smaller than S, the passage of the magnetic flux is deteriorated (causing local magnetic sum), so a significant magnetic flux leakage is formed, and the magnetic attraction force is greatly reduced. In the present invention, the most suitable S is obtained when the outer periphery of the cup-shaped ring neck is contracted, so it is used to increase the magnetic attractive force. The measurement result of the magnetic attraction force of Comparative Example 5 shown below is lower than that of Example 1. Figure 17 shows the end of one side of the butt joint between the cup ring 2 1 1 and the seal ring 2 1 5 when the sealing plate is pressed into the cup ring 2 1 1. From 201 = B, B,. Because of the expansion of general secrets = B, the end is ten. When the range of the full area and the fullness is set to 3 tables, a gap of -26- 200528069 occurs. The inner diameter of the cup-shaped ring port 2 1 1 and the outer diameter of the sealing plate are equal. Therefore, if one end of the outer periphery of the sealing plate is placed in the opening of the cup-shaped ring port 2 1 1, the sealing plate must be outside the sealing plate. The other end is hung on the opening edge of the cup-shaped ring mouth 2 丄 丄. In such a state, when the sealing plate is pressed into the opening portion of the cup-shaped ring port 2 1 1, at least one of the cup-shaped ring port 2 1 and the sealing plate is reduced at the abutting portion to generate a burr, and at the same time, the sealing plate The burr portion in the part creates a gap. In the sample shown in Figure 17, the plate-shaped ring port 2! 4 and the sealing ring 2 1 5 are firmly fixed, so there is no gap in the butt joint. Fig. 18 shows that the plate-shaped ring port 304 and the sealing ring 305 are not firmly fixed. When the sealing plate is pressed into the cup-shaped ring port 301, it is respectively at the cup-shaped ring port 301 and the sealing ring 305. There may be an offset gap between the butting portion and one of the butting portions of the plate-shaped ring port 304 and the sealing ring 305. Number! Fig. 9 is an enlarged view of part A of Fig. 18, and Fig. 20 is a microscope photograph of the part. It is clear from FIGS. 19 and 20 that the burr 30 5b remains at the butt joint of the cup-shaped ring mouth 301 and the seal ring 3 05. Fig. 21 is a microscope photograph showing the vicinity of the butt portion of the sample of Fig. 20. Fig. 22 is a schematic diagram corresponding to this. Since the sealing ring 3 0 5 before pressing is rectangular in cross section, it can be seen that the outer end portion of the sealing ring 3 0 5 is reduced. Burrs 301b and 305b were confirmed between the corner of the seal ring 3 05 and the cup-shaped ring opening 301. [Comparative Example 4] As shown in Tables 1 and 2, the outer diameter of the seal plate and the The inner diameter of the recessed portion is the same as that of Example 7 except that the sealing plate is pressed into the recessed portion 27-200528069 of the cup-shaped ring mouth, and is used to make a denture attachment. Pressing the seal plate is troublesome. The measurement results of the characteristics of the obtained denture attachment are shown in Table 3. The measurement results of the magnetic attraction force of Comparative Example 4 shown in Table 3 are lower than those of Example 1. [Comparative Example 5] As shown in Tables 1 and 2, it was produced in the same manner as in Comparative Example 5 except that a Ni plating layer having a thickness of 1 5 // m was provided between the plate-shaped ring opening and the seal ring. Denture attachments and used to determine characteristics. The results are shown in Table 3. The measurement results of the magnetic attraction force of Comparative Example 5 shown in Table 3 are significantly lower than the measurement results of Example 1. Pressing the coin seal plate is a troublesome operation. [Comparative Example 6] As shown in Tables 1 to 3, except that the gap x between the cup-shaped ring mouth and the sealing plate was taken as 7 0 # m, it was used to make a denture attachment in the same manner as in Example 1 and used to measure characteristics. The measurement results of the magnetic attraction force of Comparative Example 6 shown in Table 3 are lower than those of Example 1. The results are shown in Table 3. In addition, the pressing of the sealing plate is a troublesome operation. In addition, after honing the surface, the recessed part remains due to the welding, so that a smooth surface cannot be obtained, which cannot provide practical use. 0 -28- 200528069

第1表 例NO· 各構件之尺寸(mm) 杯狀環口 密封板 外形（1) 凹部（2) 段差 圓口⑴ Ni (3) 密封板(4) 實施例1 3.50X1.3 2.60 X 0.6 無 2.17X0.2 無 2.57X2.17X0.2 實施例2 3.50X1.3 2.60X0.6 無 2.17X0.2 無 2.57X2.17X0.2 實施例3 3.50X1.3 2.60X0.6 無 2.19X0.2 姐 /\\\ 2.59X2.19X0.2 實施例4 3.50X1.3 2.60X0.6 無 2.18X0.2 int 無 2.58X2.18X0.2 實施例5 3.50X1.3 2.60X0.6 無 2.16X0.2 無 2.56X2.16X0.2 實施例6 3.50X1.3 2.60X0.6 無 2.15X0.2 無 2.55X2.15X0.2 實施例7 3.50X1.3 2.60X0.6 2.17X0.2 i〇r 無 2.57X2.17X0.2 實施例8 3.50X1.3 2.60X0.6 • j\w 2.17X0.2 無 2.57X2.17X0.2 實施例9 3.50X1.3 2.60X0.6 /frrr. 無 2.14X0.2 有（5) 2.57X2.17X0.2 實施例10 3.50X1.3 2.75X0.6 有（7) 2.32X0.2 無 2.72X2.32X0.2 實施例11 3.50X1.3 2.75X0.6 有（7) 2.34X0.2 無 2.74X2.34X0.2 實施例12 3.50X1.3 2.75X0.6 有（7) 2.33X0.2 無 2.73X2.33X0.2 實施例13 3.50X1.3 2.75X0.6 有⑺ 2.31X0.2 無 2.71X2.31X0.2 實施例14 3.50X1.3 2.75X0.6 有（7) 2.30X0.2 组 j\ \\ 2.70X2.30X0.2 實施例15 3.50X1 · 3 2.75X0.6 有（7) 2.32X0.2 ixxL· 熙 2.72X2.32X0.2 比較例1 3.50X1 · 3 2.60X0.6 無 2.17X0.2 無 2.57X2.17X0.2 比較例2 3.50X1.3 2.60X0.6 無 2.17X0.2 /nr 2.57X2.17X0.2 比較例3 3.50X1.3 2.60 X 0.6 無 2.20X0.2 無 2.60X2.20X0.2 比較例4 3.50X1.3 2.60 X 0.6 無 2.20X0.2 無 2.60X2.20X0.2 比較例5 3.50X1.3 2.60 X 0.6 Μ 2.17X0.2 有⑹ 2.60X2.20X0.2 比較例6 3.50X1.3 2.60X0.6 無 2.13X0.2 無 2.53X2.13X0.2 註：（1)外徑X高度 (2 )內徑X深度 (3) Ni電鍍層 (4 )外徑X內徑高度 29- 200528069 (5) 將厚度15// m之Ni電鍍層設於圓板狀環口的外周圍（含 Ni電鍍層之板狀環口的外徑是2.17 μ m)。 (6) 僅在板狀環口之外周圍來形成厚度15// m的Ni電鍍層（含 Ni電鍍層之板狀環口的外徑是2.20 μ m)。 (7) 與第10圖同樣，從開口端到深度〇.3〇mm爲止具有擴大 直徑部（內徑：2.75mm)，到深度0.30mm〜0.3 8mm具有傾斜之段 差，比此更深的部分內徑是2.60mm。Table 1 No. Dimensions of each component (mm) Outline of cup-shaped ring seal plate (1) Recess (2) Stepped round mouth ⑴ Ni (3) Seal plate (4) Example 1 3.50X1.3 2.60 X 0.6 No 2.17X0.2 No 2.57X2.17X0.2 Example 2 3.50X1.3 2.60X0.6 No 2.17X0.2 No 2.57X2.17X0.2 Example 3 3.50X1.3 2.60X0.6 No 2.19X0. 2 sister / \\\ 2.59X2.19X0.2 Example 4 3.50X1.3 2.60X0.6 No 2.18X0.2 int No 2.58X2.18X0.2 Example 5 3.50X1.3 2.60X0.6 No 2.16X0 .2 No 2.56X2.16X0.2 Example 6 3.50X1.3 2.60X0.6 No 2.15X0.2 No 2.55X2.15X0.2 Example 7 3.50X1.3 2.60X0.6 2.17X0.2 i〇r No 2.57X2.17X0.2 Example 8 3.50X1.3 2.60X0.6 • j \ w 2.17X0.2 No 2.57X2.17X0.2 Example 9 3.50X1.3 2.60X0.6 / frrr. No 2.14X0 .2 Yes (5) 2.57X2.17X0.2 Example 10 3.50X1.3 2.75X0.6 Yes (7) 2.32X0.2 No 2.72X2.32X0.2 Example 11 3.50X1.3 2.75X0.6 Yes (7) 2.34X0.2 No 2.74X2.34X0.2 Example 12 3.50X1.3 2.75X0.6 Yes (7) 2.33X0.2 No 2.73X2.33X0.2 Example 13 3.50X1.3 2.75X0. 6 Yes 2.31X0.2 No 2.71X2.31X0.2 Example 14 3.50X1.3 2.75X0.6 Yes (7) 2.30X0.2 Group j \ \\ 2.70X2.30X0.2 Example 15 3.50X1 · 3 2.75X0.6 Yes (7) 2.32X0.2 ixxL · Xi 2.72X2.32X0.2 Comparative Example 1 3.50X1 3.60X0.6 No 2.17X0.2 No 2.57X2.17X0.2 Comparative Example 2 3.50X1.3 2.60X0.6 No 2.17X0.2 / nr 2.57X2.17X0.2 Comparative Example 3 3.50X1. 3 2.60 X 0.6 without 2.20X0.2 without 2.60X2.20X0.2 Comparative Example 4 3.50X1.3 2.60 X 0.6 without 2.20X0.2 without 2.60X2.20X0.2 Comparative Example 5 3.50X1.3 2.60 X 0.6 Μ 2.17 X0.2 With 60 2.60X2.20X0.2 Comparative Example 6 3.50X1.3 2.60X0.6 Without 2.13X0.2 Without 2.53X2.13X0.2 Note: (1) Outside diameter X height (2) Inside diameter X depth (3) Ni plating layer (4) Outer diameter X inner diameter height 29-200528069 (5) Ni plating layer with thickness of 15 // m is provided on the outer periphery of the circular plate ring (plate ring with Ni plating layer) The outer diameter of the port is 2.17 μm). (6) A 15 // m-thick Ni plating layer is formed only around the outside of the plate-shaped ring (the outer diameter of the plate-shaped ring including the Ni-plated layer is 2.20 μm). (7) As in Figure 10, there is an enlarged diameter section (inner diameter: 2.75mm) from the open end to a depth of 0.30mm, and there is an inclined step difference to a depth of 0.30mm to 0.3 8mm. The diameter is 2.60mm.

-30- 200528069 第2表熔接規格明細表-30- 200528069 Table 2 Splicing Specification List

例No · 點熔接部 全周圍熔接部 定位圓周的直 徑（mm) 角度間隔 (° ) 點直徑（mm) 定位圓周的直徑 (mm) 點直徑（mm) 實施例1 2.4 90 0.5 2.4 0.5 實施例2 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例3 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例4 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例5 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例6 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例7 2.6+2.2 90+90 0.3+0.3 2.6+2.2 0.3+0.3 實施例8 2.4 90 0.5 2.6+2.2 0.3+0.3 實施例9 2.4 90 0.5 2.4 0.5 實施例10 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例11 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例12 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例13 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例14 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 實施例15 2.6+2.2 90+90 0.3+0.3 2.6+2.2 0.3+0.3 比較例1 Μ 2.4 0.5 比較例2 無 2.6+2.2 0.3+0.3 比較例3 4πτ 2.4 0.5 比較例4 Μ 2.6+2.2 0.3+0.3 比較例5 Μ J \ w 2.4 0.5 比較例ό 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 200528069Example No. · Diameter (mm) of the positioning circle around the entire point of the spot welding section (mm) Angle interval (°) Point diameter (mm) Diameter of the positioning circle (mm) Point diameter (mm) Example 1 2.4 90 0.5 2.4 0.5 Example 2 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 Example 3 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 Example 4 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2+ 0.2 Example 5 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 Example 6 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 Example 7 2.6 + 2.2 90 + 90 0.3 + 0.3 2.6 +2.2 0.3 + 0.3 Example 8 2.4 90 0.5 2.6 + 2.2 0.3 + 0.3 Example 9 2.4 90 0.5 2.4 0.5 Example 10 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 Example 11 2.6 + 2.2 90 +90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 Example 12 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 Example 13 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 Example 14 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 Example 15 2.6 + 2.2 90 + 90 0.3 + 0.3 2.6 + 2.2 0.3 + 0.3 Comparative Example 1 2.4 2.4 Comparative Example 2 No 2.6 + 2.2 0.3 + 0.3 Comparison Example 3 4πτ 2.4 0.5 Comparative Example 4 Μ 2.6 + 2.2 0.3 + 0.3 Comparative Example 5 Μ J \ w 2 .4 0.5 Comparative example 2.6 + 2.2 90 + 90 0.2 + 0.2 2.6 + 2.2 0.2 + 0.2 200528069

第3表 例No. x(/m) 點熔接 毛邊 杯狀環口外徑 密封板之凸 出量t (mm) 磁性吸引力 (N) 誤差 (//m) 減少量 z (l)(mm) 實施例1 30 有 並 2 12 0 6.38 實施例2 30 有 無 2 12 0 6.43 實施例3 10 有 無 2 4 0 6.43 實施例4 20 有 無 2 8 0 6.43 實施例5 40 有 無 2 16 0 6.43 實施例6 50 有 無 4 20 0 6.43 實施例7 30 有 無 2 12 0 6.33 實施例8 30 有 無 2 12 0 6.33 實施例9 30 有 無 2 12 0 6.43 實施例10 30 有 2 12 0 6.62 實施例11 10 有 無 2 4 0 6.62 實施例12 20 有 無 2 8 0 6.62 實施例13 40 有 無 2 16 0 6.62 實施例14 50 有 Μ 4 20 0 6.62 實施例15 30 有 Μ 2 12 0 6.62 比較例1 30 Μ Μ >0.2 比較例2 30 4rrr 無 無 >0.2 比較例3 0 4τττ Μ 有 35 -20 0 6.23 比較例4 0 無 有 35 -20 0 6.08 比較例5 0 無 有 35 -20 0 6.23 比較例6 70 有 Μ 10 0 6.33 註：（1)來增大杯狀環口之外徑的情況是作爲負號（-)。 爲了用來測定實施例1及8、以及比較例1及3之假牙附件耐腐 蝕性，將各樣品在37°C之5%食鹽中浸漬3天後，用目視來觀察熔 接部的生銹狀況，同時來分析食鹽水爲了用來確認磁鐵是否被腐 蝕。將結果顯示於第4表。 -32- 200528069 第4表 例No· 生銹 食鹽水之分析結果 實施例1 1 Μ y\\\ 全部未檢測出Nd 實施例8 Μ 一_ ____j\\\_ 全部未檢測出Nd 比較例1 _ 有 全部檢測出Nd 比較例3 有 全部檢測出N d 根據上述結果，在進行全周圍熔接之前進行點熔接的 實施施例1及8之假牙附件，對於食鹽水未浸入杯狀環口 的凹部’在未進行點熔接進行全周圍熔接之比較例1及3 ® 的假牙附件’可知食鹽水浸入到杯狀環口之凹部。 若依據本發明，則將密封板緩慢地嵌入於杯狀環口之 凹部的開口部，並藉由點熔接將密封板及杯狀環口暫時固 定後來進行全周圍熔接，所以密封板不會傾斜與杯狀環口 表面大致熔接成平行，而杯狀環口及密封板之熔接部，大 致使熔融部形狀、熔融量、融入深度跨越全周圍形成均勻 的穩定品質。因此，將熔接面在平面加工之後使熔接部成 φ 爲局部的淺薄，或產生貫通孔使密封性無法降低。因此， 本發明之假牙附件，是使杯狀環口的開口端附近之領域呈 縮小直徑的外觀，來提高磁性吸引力，使耐蝕性良好富有 耐久性，以廉價可小型化且薄型化。 【圖式簡單說明】 第1圖（a )是顯示根據本發明之第一實施形態的假 牙附件之平面圖。 第1圖（b)是顯示第1圖（a)之假牙附件的全周圍 -33- 200528069 熔接前之狀態的剖面圖。 第1圖（c)是顯示第1圖（a)之假牙附件的全周圍 熔接後之狀態的剖面圖。 第1圖（d)是第1圖（a)之Α-0-Α剖面圖（顯示實 施例1的假牙附件之平面加工後的狀態）。 第2圖是顯示用來製造第1圖（a)之假牙附件的製 程槪略圖（右側之各圖是顯示左側圖的A - 0 - A剖面）。 第3圖（a)是顯示第1圖（a)之假牙附件的熔接面， ® 平面加工前之狀態平面圖。 第3圖（b)是第3圖（a)中之Α-0-Α剖面圖。 第4圖（a)是顯不根據本發明之第二實施形態的假 牙附件之平面圖。 第4圖（b)是第4圖（a)之Β-0-Β剖面圖。 μ 第5圖是顯示用來製造第4圖（a)之假牙附件的製 程槪略圖（右側之各圖是顯示左側圖的B - 0 - B剖面）。 φ 第6圖（a )是顯示根據本發明之第三實施形態的假 牙附件之平面圖。 第6圖（b)是第6圖（a)之C-0-C剖面圖。 第7圖是顯示用來製造第6圖（a)之假牙附件的製 程槪略圖（右側之各圖是顯示左側圖的C - 0 - C剖面）。 第8圖（a)是顯示根據本發明之第四實施形態的假 牙附件之平面圖。 第8圖（b)是第8圖（a)之D-0-D剖面圖。 -34· 200528069 第9圖（a )是顯示根據本發明之第五實施形態的假 牙附件之平面圖。 第9圖（b)是第9圖（a)之Ε-0-Ε剖面圖。 第1 0圖是顯示根據本發明之第六實施形態的假牙附 件之剖面圖。 第1 1圖（a )是顯示根據本發明之第七實施形態的假 牙附件之左側熔接部附近的平面加工後之剖面部分的照 片。 ® 第1 1圖（b )是顯示第1 1圖（a )之假牙附件的右側 熔接部附近之平面加工後的剖面部分的照片。 第1 2圖（a )是對應於第1 1圖（a )之線圖。 第1 2圖（b )是對應於第1 1圖（b )之線圖。 第12圖（c)是顯示第11圖（a)之假牙附件的平面 加工後之全體構造剖面圖。 第1 3圖（a )是顯示實施例3的假牙附件之左側熔接 φ 部附近的熔接後狀態之剖面部分的照片。 第1 3圖（b )是顯示實施例3的假牙附件之右側熔接 部附近的熔接後狀態之剖面部分的照片。 第1 4圖（a )是對應於第1 3圖（a )之線圖。 第1 4圖（b )是對應於第1 3圖（b )之線圖。 第14圖（c)是顯示第13圖（a)之假牙附件的熔接 後狀態之全體構造剖面圖。 第15圖是顯示無點熔接部當用來全周圍熔接杯狀環 -35- 200528069 口及密封狀板時密封板之傾斜的槪略剖面圖。 第I6圖是顯不在杯狀環口之開口部來壓入密封板之 後用來全周熔接杯狀環口及密封板而成假牙附件的部分剖 面斜視圖。 第1 7圖是顯示比較例3之假牙附件的一樣品平面圖。 第1 8圖是顯示比較例3之假牙附件的其他樣品平面 圖。 弟19圖是弟18圖之領域A的放大圖。 ® 第20圖是對應於第1 9圖之顯微鏡照片。 第2 1圖是顯示比較例5之假牙附件的密封板之嵌入 部的顯微鏡照片。 第2 2圖是對應於第2 1圖之顯微鏡照片的槪略圖。 第2 3圖是顯示用來測定假牙附件之磁性吸引力的裝 置槪略圖。 第24圖是顯不將具有假牙附件之假牙在埋設於牙槽 φ 的根面板來裝設在所設置之定位片的狀態之槪略剖面圖。 第2 5圖是顯示先前技術之假牙附件的槪略剖面圖。 第2 6圖是顯示先前技術之假牙附件的槪略剖面圖。 【主要元件符號說明】 1 、 21 、 31 、 41 、 61 、 71 、 101 、 201 、 211 、 301 、 401、501 …杯狀環口 1’、61’ …凹部 la、4a、21a、24a…對接部 -36- 200528069 2、62、72、402 …永久磁鐵 3、 23、53、103、513··.密封板 3a …壓緊構件 3b …雷射照射裝置 4、 24、44、54、64、214、304、5 14…板狀環口 5、 25、35、45、55、65、215、305、415、515···密封環 6、 6a〜6d、26e 〜261、 36e〜361、46a〜46d···點义容接咅[5 7Table 3 No. x (/ m) point welded burr cup cup ring outer diameter sealing plate protrusion t (mm) magnetic attraction (N) error (// m) reduction z (l) (mm) Example 1 30 Yes 2 2 0 6.38 Example 2 30 Yes 2 12 0 6.43 Example 3 10 Yes 2 4 0 6.43 Example 4 20 Yes 2 8 0 6.43 Example 5 40 Yes 2 16 0 6.43 Example 6 50 Presence or absence 4 20 0 6.43 Example 7 30 Presence or absence 2 12 0 6.33 Embodiment 8 30 Presence or absence 2 12 0 6.33 Embodiment 9 30 Presence or absence 2 12 0 6.43 Embodiment 10 30 Yes 2 12 0 6.62 Embodiment 11 10 Presence or absence 2 4 0 6.62 Example 12 20 With or without 2 8 0 6.62 Example 13 40 With or without 2 16 0 6.62 Example 14 50 With M 4 20 0 6.62 Example 15 30 With M 2 12 0 6.62 Comparative Example 1 30 Μ > 0.2 Comparative Example 2 30 4rrr None None> 0.2 Comparative Example 3 0 4ττττ Μ Yes 35 -20 0 6.23 Comparative Example 4 0 No 35 -20 0 6.08 Comparative Example 5 0 No 35 -20 0 6.23 Comparative Example 6 70 Μ 10 0 6.33 Note: (1) The case where the outer diameter of the cup-shaped ring mouth is increased is used as a negative sign (-). In order to measure the corrosion resistance of the denture attachments of Examples 1 and 8 and Comparative Examples 1 and 3, each sample was immersed in 5% common salt at 37 ° C for 3 days, and the rust condition of the welded portion was visually observed At the same time, the salt solution is analyzed to confirm whether the magnet is corroded. The results are shown in Table 4. -32- 200528069 Table 4 Example No. Analysis results of rusty saline solution Example 1 1 Μ y \\\ No Nd was detected Example 8 Μ _ ____ j \\\ _ All Nd was not detected Comparative Example 1 _ All Nd was detected Comparative Example 3 All Nd was detected Based on the above results, the denture attachments of Examples 1 and 8 that were spot-welded before performing all-around welding were used for the recesses in which the saline solution was not immersed in the cup-shaped ring. 'The denture attachments of Comparative Examples 1 and 3 ® with full-peripheral welding without spot welding' showed that saline was immersed in the recess of the cup-shaped ring. According to the present invention, the sealing plate is slowly inserted into the opening portion of the recess of the cup-shaped ring, and the sealing plate and the cup-shaped ring are temporarily fixed by point welding, and then the entire periphery is welded, so the sealing plate does not tilt. The surface of the cup-shaped ring mouth is welded in parallel, and the welded part of the cup-shaped ring mouth and the sealing plate roughly makes the shape of the melting part, the amount of melting, and the depth of penetration across the entire periphery to form a uniform and stable quality. For this reason, after the welding surface is made flat, the welding portion is made thin in part φ, or through-holes are formed, so that the sealing performance cannot be reduced. Therefore, the denture attachment of the present invention has a reduced-diameter appearance in the area near the open end of the cup-shaped ring to increase magnetic attractive force, has good corrosion resistance, is durable, and can be miniaturized and thinned at low cost. [Brief description of the drawings] Fig. 1 (a) is a plan view showing a denture attachment according to a first embodiment of the present invention. Fig. 1 (b) is a sectional view showing the entire periphery of the denture attachment of Fig. 1 (a) -33- 200528069 before welding. Fig. 1 (c) is a sectional view showing a state after the entire periphery of the denture attachment of Fig. 1 (a) is welded. Fig. 1 (d) is a cross-sectional view taken along the line A-0-A of Fig. 1 (a) (showing the state after the flat processing of the denture attachment of Example 1). Figure 2 shows the outline of the process used to make the denture attachment of Figure 1 (a) (the figures on the right are the A-0-A sections on the left). Fig. 3 (a) is a plan view showing the welding surface of the denture attachment of Fig. 1 (a) before the surface processing. Fig. 3 (b) is a sectional view along A-0-A in Fig. 3 (a). Fig. 4 (a) is a plan view showing a denture attachment according to a second embodiment of the present invention. Fig. 4 (b) is a sectional view taken along the line B-0-B in Fig. 4 (a). μ Figure 5 shows the outline of the process used to make the denture attachment of Figure 4 (a) (the figures on the right are the B-0-B sections on the left). Fig. 6 (a) is a plan view showing a denture attachment according to a third embodiment of the present invention. Fig. 6 (b) is a sectional view taken along the line C-0-C in Fig. 6 (a). Fig. 7 is a schematic diagram showing a process for manufacturing the denture attachment of Fig. 6 (a) (the figures on the right are the C-0-C section showing the left figure). Fig. 8 (a) is a plan view showing a denture attachment according to a fourth embodiment of the present invention. Fig. 8 (b) is a sectional view taken along the line D-0-D in Fig. 8 (a). -34 · 200528069 Fig. 9 (a) is a plan view showing a denture attachment according to a fifth embodiment of the present invention. Fig. 9 (b) is a sectional view taken along the line E-0-E in Fig. 9 (a). Fig. 10 is a sectional view showing a denture attachment according to a sixth embodiment of the present invention. Fig. 11 (a) is a photograph showing a cross-section portion after the plane processing near the left welding portion of the denture attachment according to the seventh embodiment of the present invention. ® Fig. 11 (b) is a photograph showing a cross-section of a flat surface near the welded portion on the right side of the denture attachment shown in Fig. 11 (a). Fig. 12 (a) is a line diagram corresponding to Fig. 11 (a). Fig. 12 (b) is a line diagram corresponding to Fig. 11 (b). Fig. 12 (c) is a sectional view showing the entire structure of the denture attachment shown in Fig. 11 (a) after the plane processing. Fig. 13 (a) is a photograph showing a cross section of the state after welding on the left side of the false tooth attachment of Example 3 near the welded φ portion. Fig. 13 (b) is a photograph showing a cross-sectional part of the state after welding near the right welding portion of the denture attachment of Example 3. FIG. 14 (a) is a line chart corresponding to FIG. 13 (a). Figure 14 (b) is a line chart corresponding to Figure 13 (b). Fig. 14 (c) is a sectional view of the entire structure showing the state after welding of the denture attachment of Fig. 13 (a). Fig. 15 is a schematic cross-sectional view showing the inclination of the sealing plate when the spotless welding portion is used to weld the cup ring -35- 200528069 mouth and sealing plate all around. Fig. I6 is a partial cross-sectional perspective view of the denture attachment formed by welding the cup ring and the sealing plate over the entire circumference after showing the opening of the cup ring and pressing into the sealing plate. FIG. 17 is a plan view showing a sample of the denture attachment of Comparative Example 3. FIG. Fig. 18 is a plan view showing another sample of the denture attachment of Comparative Example 3. Brother 19 is an enlarged view of domain A in Brother 18. ® Figure 20 is a photomicrograph corresponding to Figure 19 Fig. 21 is a photomicrograph showing the embedded portion of the sealing plate of the denture attachment of Comparative Example 5. Figure 22 is a schematic diagram corresponding to the microscope photograph of Figure 21. Fig. 23 is a schematic view showing a device for measuring the magnetic attractive force of a denture attachment. Fig. 24 is a schematic cross-sectional view showing a state in which a denture having a denture attachment is installed on a root plate buried in the alveolar φ and installed on a positioning piece provided thereon. Fig. 25 is a schematic sectional view showing a denture attachment of the prior art. Fig. 26 is a schematic sectional view showing a denture attachment of the prior art. [Description of main component symbols] 1, 21, 31, 41, 61, 71, 101, 201, 211, 301, 401, 501 ... cup ring 1 ', 61' ... recesses la, 4a, 21a, 24a ... butt -36- 200528069 2, 62, 72, 402… Permanent magnets 3, 23, 53, 103, 513 ... Sealing plate 3a… Compression member 3b… Laser irradiation device 4, 24, 44, 54, 64, 214, 304, 5 14 ... Plate ring 5, 5, 65, 215, 305, 415, 515 ... Seal rings 6, 6a to 6d, 26e to 261, 36e to 361, 46a ~ 46d ......

21a、31a 24a、34a 27a、37a 27b 、 37b 3 6m a 54b 61c • 61d 90 、 400 、 500 92 93 94 95 96 97 …全周圍熔接部 …第一對接部 …第二對接部 …第一全周圍熔接部 …第二全周圍熔接部 …重疊部分 …Ni電鑛層 …擴大直徑部、凹部 …段差 …假牙附件 …支撐構件 …吸盤 …接合器 …數位壓力計 …微動裝置 …試驗台21a, 31a 24a, 34a 27a, 37a 27b, 37b 3 6m a 54b 61c • 61d 90, 400, 500 92 93 94 95 96 97… all-around welded joints ... first butt joints ... second butt joints ... first all around Welding section ... Second all-around welding section ... Overlapping section ... Ni electric ore layer ... Enlarged diameter section, recessed section ... Segment difference ... Dental tooth attachment ... Support member ... Suction cup ... Coupler ... Digital pressure gauge ... Micro motion device ... Test bench

37- 20052806937- 200528069

201b、301b、305b·.·毛邊 …外周圍 201r 、 201R 414 420 421 422201b, 301b, 305b ... burr… outer periphery 201r, 201R 414 420 421 422

423 502 A B，、S、SR、Sr423 502 A B, S, SR, Sr

BmBm

BsBs

Dob、Dou、Dou’ F、F, P、Q S-S 、 T-T t u-u v-v w、w2 x z ' z, …密封圓板 …假牙床 …牙槽 …根面板 …軟磁性定位片 …磁鐵體 …領域 …面積 …殘留磁通密度 …飽和磁化 …外徑 …磁性吸引力 …位置 …直線 …凸出量 …垂線 …右端側輪廓線 …寬度 …間隙 …變形量、距離 …深度 -38- (5Dob, Dou, Dou 'F, F, P, Q SS, TT t uu vv w, w2 xz' z,… sealed circular plate… denture base… alveolar… root panel… soft magnetic positioning piece… magnet… field… Area ... Residual magnetic flux density ... Saturation magnetization ... Outer diameter ... Magnetic attraction ... Position ... Straight line ... Amount of protrusion ... Perpendicular line ... Right contour line ... Width ... Gap ... Deformation amount, Distance ... Depth -38- (5

Claims (1)

200528069 十、申請專利範圍： 1· 一種假牙附件’其特徵爲具有：永久磁鐵、及由具有用 來收納前述永久磁鐵之凹部的耐腐蝕性軟磁性材料而成 杯狀環□、及在前述杯狀環口之凹部的開口部所嵌入之 密封板，而前述密封板，是由耐腐蝕性軟磁性材料而成 板狀環口、及在前述板狀環口的外周圍由所配設之耐腐 蝕性非磁性材料而成密封環所構成，至少藉由用來固定 前述杯狀環口及前述密封環的對接部之複數部位的點熔 接部、及來覆蓋前述杯狀環口和前述密封環之對接部及 前述密封環和前述板狀環口之對接部所形成的至少1個 全周圍熔接部，並使前述密封板接合在前述杯狀環口， 因此使前述永久磁鐵被密封。 2 .如申請專利範圍第1項之假牙附件，其中前述杯狀環口 是具有使開口端附近所擴大直徑之凹部，而前述密封板 是在前述杯狀環口的前述擴大直徑部所嵌入’至少藉由 用來固定前述杯狀環口的擴大直徑部和前述密封環的對 接部之複數部位的點熔接部、及來覆蓋前述杯狀環口之 擴大直徑部和前述密封環之對接部及前述密封環和前述 板狀環口之對接部所形成的至少1個全周圍熔接部’並 使前述密封板接合在前述杯狀環口，因此使前述擴大直 徑部及前述永久磁鐵之間以設置磁性間隙的狀®5下使則 述永久磁鐵被密封。 3 .如申請專利範圍第2項之假牙附件，其中前述擴大直徑 部及前述凹部的段差是20〜200 μ m ° -39- 200528069 4 ·如申請專利範圍第1或2項之假牙附件，其中前述點熔 接部，是在前述杯狀環口和前述密封環的對接部、及前 述密封環和前述板狀環口之對接部所形成。 5 .如申請專利範圍第1〜4項中任一項之假牙附件，其中 前述全周圍熔接部，是由跨越全周圔來覆蓋前述杯狀環 口和前述密封環之對接部所形成的第一熔接部，及跨越 全周圍來覆蓋前述密封環和前述板狀環口的對接部所形 成之第二熔接部所構成。 6 .如申請專利範圍第1〜4項中任一項之假牙附件，其中 前述全周圍熔接部，是跨越全周圍來覆蓋前述杯狀環口 和前述密封環之對接部，及前述密封環和前述板狀環口 的對接部以一體所形成。 7 ·如申請專利範圍第1〜6項中任一項之假牙附件，其中 前述密封板及前述杯狀環口之表面是在接合後所平面加 工。 8.—種假牙附件，其特徵爲具有：永久磁鐵、及由具有用 來收納前述永久磁鐵之凹部的耐腐蝕性軟磁性材料而成 杯狀環口、及在前述杯狀環口之凹部的開口部所嵌入之 密封板，而前述密封板，是由耐腐蝕性軟磁性材料而成 板狀環□、及在前述板狀環口的外周圍由所配設之耐腐 蝕性非磁性材料而成密封環所構成，至少藉由用來覆蓋 前述杯狀環口和前述密封環的對接部及前述密封環和前 述板狀環口之對接部所形成的至少1個全周圍熔接部， -40- 200528069 並使前述密封板接合在前述杯狀環口，因此使前述永久 磁鐵被密封，同時前述杯狀環口之前述開口端附近的領 域是實質上寬度不變而進行縮小直徑。 9 . 一種磁性附件，其特徵爲具有：永久磁鐵、及由具有用 來收納前述永久磁鐵同時使開口端附近所擴大直徑之凹 部的耐腐蝕性軟磁性材料而成杯狀環口、及在前述杯狀 環口之前述擴大直徑部所嵌入之密封板，而前述密封 板，是由耐腐蝕性軟磁性材料而成板狀環口、及在前述 板狀環口的外周圍由所配設之耐腐鈾性非磁性材料而成 密封環所構成，藉由用來覆蓋前述杯狀環口之前述擴大 直徑部和前述密封環的對接部及前述密封環和前述板狀 環口之對接部所形成的至少1個全周圍熔接部，並使前 述密封板接合在前述杯狀環口，因此在前述擴大直徑部 及前述永久磁鐵之間在設置磁性間隙的狀態下使前述永 久磁鐵被密封，同時前述杯狀環口之前述開口端附近的 領域是實質上寬度不變而進行縮小直徑。 1 0 .如申請專利範圍第9項之假牙附件，其中前述擴大直 徑部及前述凹部的段差是20〜200 // m。 1 1 . 一種假牙附件的製法，其特徵爲：在由耐腐蝕性軟磁 性材料而成杯狀環口之凹部，來收納永久磁鐵，並將由 耐腐蝕性軟磁性材料的板狀環口及配置於其外周圍之耐 腐蝕性非磁性材料的密封環而成密封板來嵌入在前述杯 狀環口之開口部，至少將前述杯狀環口及前述密封環的 -41 - 200528069 對接部在複數部位來進行點熔接，並來覆蓋前述杯狀環 口和前述密封環之對接部及前述密封環和前述板狀環口 的對接部用來全周圍熔接前述杯狀環口及前述密封板。 1 2 ·如申請專利範圍第1 1項之假牙附件的製法，其中—次 地用來固定前述杯狀環口和前述密封環之對接部，及前 述密封環和前述板狀環口的對接部，將前述點熔接在複 數部位來進行。 1 3 ·如申請專利範圍第丨丨或1 2項之假牙附件的製法，其 中作爲前述全周圍熔接，是用來形成跨越全周圍來覆蓋 前述杯狀環口和前述密封環之對接部的第一熔接部，同 時用來形成跨越全周圍來覆蓋前述密封環和前述板狀環 口的對接部之第二熔接部。 1 4 ·如申請專利範圍第1 1或1 2項之假牙附件的製法，其 中跨越全周圍一體來覆蓋前述杯狀環口和前述密封環之 對接部’及前述密封環和前述板狀環口的對接部來進行 前述全周圍熔接。 1 5 .如申請專利範圍第1 1〜1 4項中任一項之假牙附件的製 法’其中在全周圍熔接後用來平面加工前述密封板及前 述杯狀環口。 -42-200528069 10. Scope of patent application: 1. A denture attachment 'characterized by having a permanent magnet and a cup-shaped ring made of a corrosion-resistant soft magnetic material having a recess for accommodating the aforementioned permanent magnet. The sealing plate is embedded in the opening of the concave portion of the ring-shaped ring, and the sealing plate is a plate-shaped ring made of a corrosion-resistant soft magnetic material, and the outer periphery of the plate-shaped ring is provided with a resistant material. A seal ring made of a corrosive non-magnetic material is used to cover the cup ring opening and the seal ring by at least a point welding portion for fixing the cup ring opening and a plurality of parts of the butt joint portion of the seal ring. The abutting portion, the at least one all-around welded portion formed by the abutting portion of the sealing ring and the plate-shaped ring port, and the sealing plate is joined to the cup-shaped ring port, so that the permanent magnet is sealed. 2. The denture attachment according to item 1 of the scope of patent application, wherein the cup-shaped ring mouth is a recess having an enlarged diameter near the open end, and the sealing plate is embedded in the enlarged diameter portion of the cup-shaped ring mouth. At least the spot-welding portion for fixing the enlarged diameter portion of the cup-shaped ring mouth and the plural portions of the butt joint portion of the seal ring, and the enlarged diameter portion of the cup-shaped ring mouth and the butt-joint portion of the seal ring and At least one full-circumferential welded portion formed by the abutting portion of the seal ring and the plate-shaped ring port, and the seal plate is joined to the cup-shaped ring port, so that the enlarged diameter portion and the permanent magnet are arranged between The shape of the magnetic gap is lower than 5 so that the permanent magnet is sealed. 3. If the denture attachment of item 2 of the patent application scope, wherein the step difference between the enlarged diameter portion and the concave portion is 20 ~ 200 μm ° -39- 200528069 4 · If the denture attachment of item 1 or 2 of the patent application scope, where The point welding portion is formed at a butt portion between the cup-shaped ring mouth and the seal ring, and a butt portion between the seal ring and the plate-shaped ring mouth. 5. The denture attachment according to any of claims 1 to 4 in the scope of the patent application, wherein the all-around welded portion is a first weld formed by covering the cup-shaped ring mouth and the abutment portion of the seal ring across the entire circumference. And a second welded portion formed by the butt portion covering the sealing ring and the plate-shaped ring port over the entire periphery. 6. The denture attachment according to any of claims 1 to 4 in the scope of patent application, wherein the all-around welding portion is a butt portion covering the cup-shaped ring mouth and the aforementioned seal ring across the entire periphery, and the aforementioned seal ring and The abutting portion of the plate-shaped ring mouth is integrally formed. 7. The denture attachment according to any one of claims 1 to 6, wherein the surfaces of the sealing plate and the cup-shaped ring mouth are machined on the plane after joining. 8. A denture attachment, comprising: a permanent magnet; a cup-shaped ring formed of a corrosion-resistant soft magnetic material having a recess for accommodating the permanent magnet; and a recessed portion of the cup-shaped loop. The sealing plate embedded in the opening is a plate-shaped ring made of a corrosion-resistant soft magnetic material, and the outer periphery of the plate-shaped ring is made of a corrosion-resistant non-magnetic material. It is constituted by a seal ring, and at least one all-around welding portion formed by covering the abutment portion of the cup-shaped ring mouth and the seal ring and the abutment portion of the seal ring and the plate-shaped ring mouth, -40 -200528069 The sealing plate is joined to the cup-shaped ring mouth, so that the permanent magnet is sealed, and the area near the open end of the cup-shaped ring mouth is substantially constant in width and reduced in diameter. 9. A magnetic accessory, comprising: a permanent magnet; and a cup-shaped ring made of a corrosion-resistant soft magnetic material having a recessed portion for accommodating the permanent magnet and having an enlarged diameter near the open end, and The sealing plate in which the aforementioned enlarged diameter portion of the cup-shaped ring mouth is embedded, and the sealing plate is a plate-shaped ring mouth made of a corrosion-resistant soft magnetic material, and is arranged on the outer periphery of the plate-shaped ring mouth. Corrosion-resistant uranium non-magnetic material is used to form a seal ring, and is used to cover the enlarged diameter portion of the cup-shaped ring mouth and the abutment portion of the seal ring and the abutment portion of the seal ring and the plate-shaped mouth Forming at least one all-around welded portion and joining the sealing plate to the cup-shaped ring mouth, the permanent magnet is sealed while a magnetic gap is provided between the enlarged diameter portion and the permanent magnet, and at the same time The area near the open end of the cup-shaped ring mouth is reduced in diameter with substantially constant width. 10. The denture attachment according to item 9 of the scope of patent application, wherein the step difference between the enlarged diameter portion and the concave portion is 20 to 200 // m. 1 1. A method for manufacturing a denture attachment, characterized in that a permanent magnet is housed in a recess of a cup-shaped ring made of a corrosion-resistant soft magnetic material, and a plate-shaped ring made of a corrosion-resistant soft magnetic material is arranged and arranged. A sealing plate made of a sealing ring made of a corrosion-resistant non-magnetic material around the outside is inserted into the opening portion of the cup-shaped ring mouth, and at least the -41-200528069 butt joints of the cup-shaped ring mouth and the sealing ring are in plural. It is used for spot welding to cover the abutment part of the cup-shaped ring mouth and the seal ring, and the abutment part of the seal ring and the plate-shaped ring mouth to weld the cup-shaped ring mouth and the seal plate all around. 1 2 · According to the manufacturing method of the denture attachment of item 11 of the scope of patent application, which is used to fix the abutment portion of the cup ring and the seal ring, and the abutment portion of the seal ring and the plate ring. , Welding the aforementioned points to a plurality of locations. 1 3 · According to the manufacturing method of the denture accessory of item No. 丨 or 12 of the scope of patent application, wherein the above-mentioned all-around welding is used to form the first portion covering the cup-shaped ring mouth and the abutment portion of the aforementioned sealing ring across the entire periphery. A welding portion is also used to form a second welding portion that spans the entire periphery to cover the butting portion of the sealing ring and the plate-shaped ring port. 1 4 · According to the manufacturing method of the denture accessory of item 11 or 12 in the scope of the patent application, which covers the abutment portion of the cup-shaped ring mouth and the sealing ring and the sealing ring and the plate-shaped ring mouth integrally over the entire periphery. Butt joint to perform the aforementioned all-around welding. 15. The method of manufacturing a denture attachment according to any one of claims 11 to 14 of the scope of the patent application, wherein the welding is performed on the entire sealing surface and the aforementioned cup-shaped ring mouth after welding all around. -42-
TW94104959A 2004-02-18 2005-02-18 Artificial tooth attachment and process for producing the same TWI300709B (en)

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CN106132349B (en) * 2014-04-04 2020-03-10 日立金属株式会社 Magnetic structure of magnetic attachment for dental use
KR101601154B1 (en) 2015-04-21 2016-03-08 박병활 Attachment for false teeth using magnetic object

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JP2795755B2 (en) * 1990-06-15 1998-09-10 日立金属株式会社 Permanent magnet assembly for denture stabilization
US5337033A (en) * 1991-06-13 1994-08-09 Hitachi Metals, Ltd. Permanent magnet assembly for stably fixing denture
JPH06169937A (en) * 1992-12-10 1994-06-21 Hitachi Metals Ltd Magnetic type denture-maintaining apparatus
JPH06209956A (en) * 1993-01-21 1994-08-02 Hitachi Metals Ltd Magnet assembly body for denture
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