TWI300709B - 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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TWI300709B
TWI300709B TW94104959A TW94104959A TWI300709B TW I300709 B TWI300709 B TW I300709B TW 94104959 A TW94104959 A TW 94104959A TW 94104959 A TW94104959 A TW 94104959A TW I300709 B TWI300709 B TW I300709B
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Taiwan
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ring
cup
plate
opening
sealing
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TW94104959A
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TW200528069A (en
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Akira Kikuchi
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Hitachi Metals 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)

Description

1300709 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 k 用磁性吸引力來保持假牙。 【先前技術】 日本專利特開平4- 2272 5 3號所揭示，如第24圖 Μ 具有：在內部具有永久磁鐵402同時在假牙床420 之假牙附件400、及在埋設於牙槽421的根面板422 # 之軟磁性定位片423，並藉由永久磁鐵402及定位片 磁性吸引力在根面板422所保持之假牙43 0。假 400，是具有在軟磁性不銹鋼製的杯狀環口 401之開 軟磁性不銹鋼製的密封圓板4 1 4及非磁性不銹鋼製 環4 1 5所配置成同心狀，並使密封圓板4 1 4和密封 之間及密封環4 1 5和杯狀環口 40 1之間所全周圍熔 封永久磁鐵402的構造。假牙附件400，對人體是無 有長期間化學的穩定性，可用來滿足大的吸引力等| 第25圖所示之磁性附件400，因爲這樣的構造 在熔接前，在杯狀環口 4 0 1及密封環4 1 5之間由於 寸的誤差會有若干之間隙。杯狀環口 40 1及密封環 熔接，是使兩者之熔融的金屬所混合來塡補間隙。 性附件400，是將該間隙順著一方向以熔融金屬所塡 行周圍熔接，所以密封環4 1 5是當熔融金屬進行冷 拉伸，並使熔接部進行收縮同時使未熔接部之間隙 因此可知會使密封圓板4 1 4大傾斜的問題。在周圍 磁鐵利 所示， 所埋入 所設置 423的 牙附件 口部使 之密封 環4 1 5 接來密 害，具 g求。 ，所以 加工尺 415的 可是磁 補來進 卻時所 擴大， 熔接中 1300709 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 40 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 m 率降低。 , 日本專利特開平1 1 - 1 3 7 5 7 6號，是揭示第26圖所示構 造之假牙附件。第26圖之假牙附件5 00，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 501、 ® 及來封入磁鐵體5 02在杯狀環口 501的開口部所嵌合之密 封板5 0 3所構成，密封板5 0 3是由軟磁性板狀環口 5 0 4、及 在其外周圍包層（c 1 a d )接合的非磁性密封環5 0 5所構成， 板狀環口 504及非磁性密封環505及杯狀環口 501之間爲 至少其表面側爲一體地熔接。 第2 6圖所示磁性附件5 0 0，是使密封板5 1 3在杯狀環 口 5 0 1之開口部所壓入，在周圍熔接中使密封板5 1 3無傾 φ 斜之虞’但當數mm程度的直徑之假牙附件5 0 0組合時在杯 狀環口 5 0 1的開口部要將板狀環口 5 1 4完全地水平壓入是 有所困難’通常是使所壓入之板狀環口 5丨4在稍微傾斜狀 . 態下形成在杯狀環口 501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 501內依然要來壓入小的板狀環口 514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。 【發明内容】 1300709 因此本發明之目的是提供一種假牙附件，使杯狀環口 的凹部以優越的熔接品質密封，且具有高的磁性吸著力， 良好的耐腐鈾性。 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 | 永久磁鐵、及由具備收納前述永久磁鐵之凹部的耐腐蝕性 軟磁性材料形成之杯狀環口、及經嵌入在前述杯狀環口之 Η部的開口部之密封板；前述密封板是由耐腐蝕性軟磁性 材料形成之板狀環口、及由配設在前述板狀環口的外周圍 之耐腐蝕性非磁性材料而成密封環所構成，且至少藉由用 $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、及以覆蓋前述杯狀環口和前述密封環之對接部 &前述密封環和前述板狀環口之對接部的方式形成的至少 • 1個全周圍熔接部，以使得前述密封板接合在前述杯狀環 D ’藉以密封前述永久磁鐵。 根據本發明之較佳實施形態的磁性附件，其係具有永 _ X磁鐵、及由具備收納前述永久磁鐵且在開口端附近爲經 • 丨廣大直徑之凹部的耐腐蝕性軟磁性材料而形成之杯狀環 α '及經嵌入在前述杯狀環口的前述擴大直徑部之密封 & ;前述密封板是由耐腐蝕性軟磁性材料而形成的板狀環 D '及由配設在前述板狀環口的外周圍之耐腐蝕性非磁性 -7- 1300709 材料而形成之密封環所構成，並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、及以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 • 接部之方式所形成的至少1個全周圍熔接部，使前述密封 " 板接合在前述杯狀環口，藉以在使得前述擴大直徑部及前 述永久磁鐵之間爲設有磁性間隙的狀態下密封前述永久磁 | 鐵。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、及由具備收納前述永久磁鐵之凹部的耐腐 蝕性軟磁性材料而成的杯狀環口、及經嵌入在前述杯狀環 口之凹部的開口部之密封板；前述密封板是由耐腐鈾性軟 磁性材料而形成之板狀環口、及由配設在前述板狀環口的 外周圍之耐腐蝕性非磁性材料而形成之密封環所構成，且 φ 至少藉由以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的方式所形成的至少1 個全周圍熔接部，使前述密封板接合在前述杯狀環□，藉 , 以密封前述永久磁鐵，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之縮小直徑。 根據本發明另外之其他的一實施形態的磁性附件，其 特徵爲具有永久磁鐵、及由具備前述永久磁鐵且在開口端 附近爲經擴大直徑之凹部的耐腐鈾性軟磁性材料而形成的 1300709 杯狀環口、及經嵌入在前述杯狀環口之前述擴大直徑部之 密封板；前述密封板是由耐腐鈾性軟磁性材料而形成之板 狀環口、及由配設在前述板狀環口的外周圍之耐腐蝕性非 磁性材料而成密封環所構成，並藉由以覆蓋前述杯狀環口 - 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的方式所形成的至少1個全周圍熔 接部，使前述密封板接合在前述杯狀環口，藉以在使得前 述擴大直徑部及前述永久磁鐵之間爲設有磁性間隙的狀態 下密封目丨j述永久fe鐵’並且在目(J述杯狀環口之前述開口端 附近的領域是實質上寬度不變之縮小直徑。實用上前述擴 大直徑部及則述凹部之段差是在20〜200#111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。 p 前述全周圍熔接部，是（a)以跨越全周圍覆蓋前述杯 狀環口和前述密封環之對接部的方式所形成的第一熔接 部，及以跨越全周圍來覆蓋前述密封環和前述板狀環口的 ， 對接部的方式所形成之第二熔接部所構成，或（b )以跨越 • 全周圍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之一體性熔接部爲佳。 前述密封板及前述杯狀環口之表面是在全周圍熔接後 經平面加工爲佳。 -9- 1300709 本發明之假牙附件的製法，其特徵爲；將永久磁鐵收 納在由耐腐蝕性軟磁性材料而成的杯狀環口之凹部，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形成之密封板嵌入在前述杯狀 - 環口之開口部，至少將前述杯狀環口及前述密封環的對接 ， 部予以點熔接在複數部位，並以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的 方式，全周圍熔接前述杯狀環口及前述密封板。 以（a )僅固定前述杯狀環口和前述密封環之對接部的 方式，或（b )固定前述杯狀環口和前述密封環之對接部，及 目丨J述治封ί哀和目I[述板狀環口的對接部的方式，將前述點熔 接在複數部位來進行爲佳。 以（a )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，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之第二熔接部的方式，或（b ) φ 跨越全周圍一體性覆蓋前述杯狀環口和前述密封環之對接 部的方式，及前述密封環和前述板狀環口的對接部，來進 行前述全周圍熔接爲佳。 ^ 在全周圍熔接後，平面加工前述密封板及前述杯狀環 ^ 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詳細 加以說明，但具有同樣一位數數字參考號碼的部位基本上 -10- 1300709 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 磁性材料而成密封環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， 密封環是使用耐腐飩性非磁性不銹鋼（譬如S U S 3 1 6 L )爲佳。 爲了提高假牙附件之組合效率，密封板3，是於適合作 φ 爲板狀環口 4之軟磁性材料的圓棒嵌入適合作爲密封環5 之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 Λ 中以6 0 0〜8 8 0 °C 0 · 5〜1 0小時，較佳以7 0 0〜8 5 0 X：進行1 . 〜8小時熱處理，冷卻到室溫。熱處理條件在未達60(TC x〇 . 5 小時則在板狀環口 4及密封環5之間完全不會產生接合， 又在超過880°C xO · 5小時的熱處理則板狀環口 4及密封環5 之界面來進行融合，如後述比較例3所示所獲得假牙附件 -11 - 1300709 的磁性吸引力很低。藉由前述熱處理，使適合作爲板狀環 口 4之0板體及適合作爲密封ί哀5之圓筒材來薄薄地（輕 輕地），接合。用語「薄薄地（輕輕地）」，其意義是指圓板 體及圓筒材之接合界面中的熔融部之面積率在10%以下，特 - 別在5%以下。還有，亦可將前述條件之熱處理在切片之前 - 來進行。 密封板3及杯狀環口 1是個別來製造，所以必然會產 0 生嵌合尺寸的誤差。因此替代如先前技術之假牙附件將密 封板3壓入杯狀環口 1，將密封板3之外徑設定比杯狀環口 1的內徑稍小，則密封板3可容易地嵌入到杯狀環口 1之開 口部爲佳。因藉由熔接而確實地來進行密封，所以密封板3 及杯狀環口 1的間隙X是作爲1 〇〜6 〇 // m爲佳。如第1 ( b ) 圖所示，間隙X是（杯狀環口 1之內徑）-(密封板3之外 徑）。 如第1 ( b )圖所示，密封板3，是在收納於杯狀環口 1 ® 之凹部1 ’的永久磁鐵2之上面以密接的方式嵌入凹部 1 ’ 。此時，密封板3的上面與杯狀環口 1之上面大致一致。 密封板3及杯狀環口丨是以雷射或電子光束所熔接，而內 ， 部之永久磁鐵2是密封在環口內並與外部來封口。熔接部， • 是以覆蓋密封板3及杯狀環口 1之對接部的方式於複數部 位設置的點熔接部6、及以覆蓋杯狀環口 1和密封環5之對 接部及密封ί哀5和板狀環口 4的對接部的方式所形成之全 周圍熔接部7所構成。 -12- 1300709 點熔接部6是藉由點的照射雷射光使熔融凝固（熔接） 的部分。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的杯狀環口 1及覆蓋板狀環口 4 •的一部分。因此，藉由點熔接部6，板狀環口 4是一體性固 - 定在杯狀環口 1。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固定即可。點熔接部6 I 相對於密封板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〜6 d所構成。 本實施形態，如第1 ( c )圖所示，全周圍熔接部7， 是以跨越全周圍一體性覆蓋杯狀環口 1和密封環5之對接 部、及密封環5和板狀環口 4的對接部的方式所形成。一 體性的全周圍熔接部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。該一體性的全周圍熔接部7， φ 是藉由同時照射雷射光於挾持密封環5的杯狀環口 1及板 狀環口 4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 ( c )圖所示全周圍熔接後之假牙附件， • 相對於杯狀環口 1的凹部1 ’之底面附近的外徑D 〇 b，凹部 1 ’之開口端附近的外徑D 〇 u ’爲縮小（D 〇 b > D 〇 u ’ ）。還有 如第1 ( d )圖所示，平面加工後，外徑Dou’成爲Dou。 開口端附近之外徑爲縮小的現象可認爲由於以下理由 -13- 1300709 所產生。藉由點熔接以暫時固定杯狀環口 1及密封環5之 時點下杯狀環口 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〜6d於熔融後凝固的時點在熔接部 產生收縮的力量，但點熔接部6 a〜6 d之體積小，所以由於 - 不能將杯狀環口 1拉到跟前。一旦開始進行全周圍熔接， . 則所熔融的對接部（熔接部）會凝固而收縮，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未被熔融側介由點熔接部固定，所以 ® 在熔接部被拉伸亦不會變形。另一方，杯狀環口 1於外周 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的開口端近傍是在熔接部側一點點拉到跟前而 來，於熔接全周圍之階段大致形成均勻地縮小。還有，一 旦不進行藉由點熔接之暫時固定而進行全周圍熔接，則未 被固定的密封環在熔接部被強烈拉近，而並使密封板大大 φ 地凸出。 如第1 ( d )圖所示，密封板3及杯狀環口 1之熔接面 是藉由硏磨等平面加工。藉由平面加工除去熔接部的局部 , 性凹凸，而形成平滑面9。假牙附件的平滑面9與埋設於牙 . 槽之根面板會良好地密接，所以不會使磁通打亂。其結果， 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之圓形剖面的凹部丨’中收納永久磁 -14- 1300709 鐵2，並在凹部1 ’之開口部嵌入密封板3。將傾斜之壓緊 構件3 a的前端部檔接在密封板3之大約中央，來固定密封 板3〔製程（a )〕。這種狀態下，以覆蓋杯狀環口 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的 . 方式，將複數部位的點熔接依6a— 6b— 6c- 6d順序來進行 . 〔製程（b )〕。使用雷射照射裝置3b，以這樣對角線上之點 6 a— 6b— 6 c— 6d順序藉由進行點熔接，當熔融金屬冷卻凝 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〜6d，密封板3在杯狀環口 1強固地固定。 作爲密封板3，以拉拔加工將板狀環口 4及密封環5 — 體化之後，藉由熱處理等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 φ 地來照射點直徑的雷射光於覆蓋杯狀環口 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 1以 ^ 大致等間隔固定，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、融入深度是藉由跨越全周圍而大致均勻的熔 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從外部被氣密地遮斷。將全周圍熔接用雷射光作成與 -15- 1300709 點熔接用雷射光相同的點直徑爲佳。第3 ( a )圖是顯示全 周圍熔接後之杯狀環口 1及密封板3的表面狀態，第3 ( b ) 圖是顯示其剖面圖。本例點熔接部6 a〜6 d是隱藏全周圍熔 接部7，而圖號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δ來進行 平面加工（硏磨）〔製程（e )〕。切深深度5，與杯狀環口 1 及密封板3形成同一高度，同時以使全周圍熔接部7之凹 I 凸不殘留的方式，作爲ΙΟ/zm〜100//m程度，較佳是40/zm 〜60/zm。5未達10/zm則在表面會殘留凹凸。其中一方5 超過1 00 // 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大致平行地被熔接， 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（an s t en 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 . 〜1 lOOt： x〇· 5〜10小時，較佳是700〜900 °C xl〜5小時加熱 後，冷卻到室溫之條件爲佳。熱處理條件未達6 0 0 °C X 0 . 5 小時則熱處理的效果不充分，又超過1 1 0 0 °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 -16- 1300709 低’又不能無視杯狀環口及密封板的熱變形。： 化可獲得本發明之假牙附件。 如第1 ( c )圖所示，爲了杯狀環口 1及密丨 '隙X ’全周圍熔接之後，杯狀環口丨僅在內側變 ^ 熔接將密封板3固定在杯狀環口 1，進而進行全 、 以變形是在周圍方向大致均勻地產生。該變形量 X的大約一半。這是，朝向杯狀環口丨之內側的 I 直徑方向兩端各有Z’，所以全體是成爲2z，。 面加工使密封板3約變薄20%之情況下，平面加 量z是成爲約z’的80%。一般而言變形量2是 程度。 第4(a)圖及第4(b)圖是顯示根據本發 施形態的假牙附件，第5圖是顯示其製造製程 態，是形成覆蓋杯狀環口 2 1和密封環2 5之第一 的點熔接部2 6 e、2 6 g、2 6 i、2 6 k，及覆蓋密封_ φ 環口 24之第二對接部24a的點熔接部26 f、26h 同時在第一對接部21a及第二對接部24a個別 周圍熔接部27a及第二全周圍熔接部27b。鄰接 . 26e 及 26f、26g 及 26h、26i 及 26j、以及 26k _ 重疊，又第一全周圍熔接部27a及第二全周圍 也不重疊。在第一全周圍熔接部27a及第二全 2 7b之間露出有非磁性密封環25，所以可有效 杯狀環口 2 1及板狀環口 24之間的磁通短路。 最後進行磁 封板3之間 形。藉由點 周圍熔接所 z ’是間隙 變形量是在 譬如藉由平 工後之變形 1 0 〜4 0 // m 明之第二實 。本實施形 對接部2 1 a I 2 5和板狀 、26j、26卜 形成第一全 之點熔接部 及261是不 熔接部2 7 b 周圍熔接部 地用來防止 -17- 1300709 第二實施形態之假牙附件的製法，除了個別形成點_ 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(a)圖及第6(b)圖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 31和密封環3 5之 弟一封接部31a的點熔接部36e、36g、36i、36k，及用來 $ 覆盍密封環3 5和板狀環口 3 4之第二對接部3 4 a的點熔接 部36f、36h、36j、361，同時在第一對接部3 la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37b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37a及第二全周圍熔接部37b重疊之部分。如第6 (a)圖點線所示，第一全周圍熔接部37a及第二全周圍熔 接部3 7 b的重疊部分是在密封環3 5之大致中央部，但幾乎 • 未混入杯狀環口 3 1或板狀環口 3 4的軟磁性材料，所以在 • 磁性電路上並無特別之間題。又上述重疊的部分是藉由平 面加工幾乎被除去。 第8(a)圖及第8(b)圖是顯示根據本發明之第四實 施形態的假牙附件。本實施形態之假牙附件，具有用來覆 -18 - 1300709 蓋杯狀環口 41和密封環4 5之第一對接部，及用來覆蓋密 封環4 5和板狀環口 4 4的第二對接部之點熔接部4 6 a〜 46d，同時在第一對接部及第二對接部個別具有第一全周圍 熔接部47a及第二全周圍熔接部47b。點熔接部46a〜46d • 是與第一實施形態相同地形成，而第一全周圍熔接部47 a - 及第二全周圍熔接部47b是與第三實施形態同樣地形成。 第9(a)圖及第9(b)圖是顯示根據本發明之第五實 施形態的假牙附件。本實施形態之假牙附件，除了在密封 板5 3的板狀環口 5 4及密封環5 5之間設有N i電鍍層5 4b 之外，其他與第一實施形態相同。將N i電鍍層5 4 b譬如作 爲1 5 // m之厚度，則密封板5 3僅縮小其部分的半徑尺寸。 一旦Ni電鍍層54b與密封板53之軟磁性材料熔融混合， 則改變成非磁性合金，所以可有效地防止板狀環口 5 4及杯 狀環口 5 1之間的磁通洩漏。 第1 〇圖是顯示根據本發明之第六實施形態的假牙附 φ 件。本實施形態之假牙附件，其特徵爲具有：具有擴大直 徑部6 1 c的杯狀環口 6 1。除此以外之點是與第二實施形態 的假牙附件同樣。爲使磁性間隙可有效地防止板狀環口 6 4 . 及杯狀環口 6 1之間的磁通浅漏來發揮作用，擴大直徑部6 1 c . 之半徑方向深度（w-w2)是20〜200/zm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6 1 d的 下端部之距離）是2 0 0〜4 0 0 // m程度爲佳。段差6 1 d的傾 斜角（與水平線之角度）是0〜60 °爲佳。第1 〇圖之磁性附 -19- Ϊ300709 件’其外觀特徵爲：相對於杯狀環口 6 1的凹部擴大直徑部 6 1 c之底部附近的外徑，凹部6丨c之開口端附近的領域爲縮 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6 5之.內端部是定位於比永久磁鐵6 2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。 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S U S 3 1 6 L 來形成，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Br : 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〕 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適合作爲密封環的圓筒 ，材，拉拔加工後切片成厚度0 · 2mm之後，在還原性大氣中 .以80 0 °C來熱處理，冷卻到室溫。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 ( b )圖所示 之組合，沿著如第2表所示直徑2 . 4mm的圓周（將第1 ( a ) 圖之點0作爲中心）以90 °的等角度間隔藉由0 . 5mm之點直 -20- 1300709 徑的雷射光經點熔接來進行暫時固定，其次同樣沿著直徑 2 . 4mm之圓周藉由〇 · 5mm的點直徑之雷射光來進行全周圍熔 接〔第1 ( c )圖〕。如第3 ( b )圖所示，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X的方向上杯狀環口 1之開口端附 * 近的領域變形。最後來進行拋光硏磨到〇 · 0 5mm之深度δ爲 止，將熔接面使最大面粗度R m a X加工成1 /z m以下，來製 作第1 ( a )圖及第1 ( d )圖所示假牙附件。平面加工後之 b 熔接部的深度是均一的0.1mm。平面硏磨後在800 °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l( d)圖〕。 如第1 ( d )圖所示，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及密封環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介由接合器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9 7、及以支撐定位片9 1的形成固定在試驗台9 7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9 2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9 0從定位片9 1分離時來讀取數位壓力計 -21 - 1300709 95之値。還有對於10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，以覆蓋第2表所示杯狀環口 2 1 及密封環2 5的對接部的方式沿著直徑2 . 6mm之圓周（將第 5 ( a)圖之點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，同時以覆蓋密封環25 及板狀環口 24的對接部的方式沿著直徑2 · 2mm之圓周（將 第5( a )圖之點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。其次沿著與第一點熔接的圓周相 同的直徑2.6mm之圓周藉由0.2mm點直徑的雷射光來進行 第一全周圍熔接，同時沿著與第二點熔接的圓周相同的直 徑2.2mm之圓周藉由〇.2mra點直徑的雷射光來進行第二全 周圍熔接〔第5(d)圖〕。最後硏磨到〇.〇5mm之深度爲止 將熔接面平坦化，而製作第4 ( a )及（b )圖所示的假牙附 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2 5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〕 -22- 1300709 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〕 、 如第2表所示與實施例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1 5 // m的N i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具有段差之杯狀環口之 外其他與實施例2〜6同樣，用來製作第1 2 ( c )圖所示的假 φ 牙附件。將熔接部之剖面的顯微鏡照片顯示於第1 1 ( a )及 (b )圖。從對應於第1 1 ( a )及（b )圖之顯微鏡照片的第 1 2 ( a )及（b )圖明白顯示，杯狀環口 7 1之凹部開口端近 . 傍的外側面是相對於垂線U - U(垂線U - U是平行於永久磁鐵 . 72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。 -23 - 1300709 從第1 2 ( c )圖可知，相對於杯狀環口 71之凹部的擴 大直徑部之底附近（位置P )中的外直徑Dob，前述凹部之 開口端（位置Q )的外直徑爲縮小（Dob > Dou )。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。 * 〔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 0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( a ) 及（b)圖。又第14(a)及（b)圖是對應於第13(a)及 (b )圖之顯微鏡照片的線圖，第14(c)圖是顯示假牙附 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。 〔比較例1〕 如第1表及第2表所示，使用與實施例1相同之杯狀 φ 環口及密封板（兩者之間隙是3 0 // m )，不進行點熔接而進 行與實施例1相同之全周圍熔接時，如第1 5圖所示，密封 板1 0 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，使用與實施例7相同之杯狀 環口及密封板（兩者之間隙是3 〇 # m )，不進行點熔接而進 行與實施例7相同之全周圍熔接時，密封板完全由杯狀環 -24- 1300709 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 - 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 2 0 1及密封環2 0 5之間具有毛邊2 0 1 b，又杯狀 環口 20 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20 1 R之半徑-外周圍201 r的半徑）以負號來顯示。20 1R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1 6圖所示，藉由全周圍熔接使杯狀環口 20 1之端 面的外周圍從201 r擴張到20 1R，而杯狀環口 201之端面的 面積是增大到SK〔=Srxa (α是定數、α>1)〕。從永久磁 φ 鐵202所產生之磁通是不變化，所以杯狀環口 201的端面 之面積及由此產生的磁通之關係，是根據BxSr = B，xSR ( Β及 Sr是面積擴張前的磁通密度及端面之面積，3，及Sr是面積 . 擴張後的磁通密度及端面之面積）所表示。因此，B，/ α。 . 磁性吸引力，是通過磁通的面積及磁通密度之平方積的比 例，所以擴張後之磁性吸引力F’及擴張前的磁性吸引力F 之比’成爲（SrxB’2) / (Si*xB2) =Β’/Β=1/α。這樣一來，藉 由壓入來擴張杯狀環口 2 0 1的外周圍，則使磁性吸引力下 -25- 1300709 降。 相對地，各實施例之磁性附件任一者，皆是使杯狀環 '口之端面面積s ( =SmxBm/Bs )成爲最適當（<Sr<SR)所設 .計。B s是杯狀環口之飽和磁性’ Bm是永久磁鐵的殘留磁通 . 密度，Sm是永久磁鐵之剖面積。還有，前述環口端面的面 . 積比S形成更小則使磁通之通過變壞（引起局部的磁性飽 和），所以形成顯著地磁通洩漏，會使磁性吸引力大幅度地 下降。本發明是來收縮杯狀環口的外周圍之情況下來設計 ® 所獲得最適合的S，所以用來增加磁性吸引力。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時，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產生間 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 φ 部，則必然地使密封板之外周圍的另一端掛在杯狀環口 2 1 1 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 1 4及 密封環2 1 5被強固地固著，所以在對接部不會產生間隙。 第1 8圖，是顯示板狀環口 3 0 4及密封環3 0 5未被強固 地固著下密封板壓入在杯狀環口 3 0 1時，分別在杯狀環口 -26- 1300709 3 0 1及幣封環3 〇 5之對接部、及板狀環口 3 〇 4及密封 的對接部之其中一方側產生偏移的間隙之情況。第】 第18圖的部分A放大圖，第20圖是其部分之顯微鏡 -從第19圖及第20圖明白顯示，在杯狀環口 3〇1及 • 3 0 5的對接部是殘留著毛邊3〇51)。 - 第21圖是顯示第2 0圖之樣品的對接部附近之 照片’第2 2圖是對應於此的槪略圖。壓入前之密封 | 是剖面長方形狀，所以可知密封環3 〇 5的外端部被 在岔封環3 0 5之角部及杯狀環口 3 0 1之間確認： 301b 、 305b ° 〔比較例4〕 如第1表及第2表所示將密封板之外徑及杯狀 凹部之內徑作爲同樣，除了將密封板壓入於杯狀環 部之外其他與實施例7同樣，用來製作假牙附件。 之壓入是麻煩的作業。將所獲得假牙附件之特性的 φ 果顯示於第3表。第3表所示比較例4之磁性吸引 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 . 設有厚度1 5 // m的N i電鍍層之外其他與比較例5同 作假牙附件，並用來測定特性。將結果顯示於第3 _ 表所示比較例5之磁性吸引力的測定結果是比實施 測定結果顯示更低。又密封板的壓入是麻煩的作業 環30 5 .9圖是 照片。 密封環 顯微鏡 環30 5 削減。 有毛邊 環口的 口的凹 密封板 測定結 力的測 環之間 樣地製 t。第3 例1之 -27- 1300709 〔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 μ m之外其他與實施例1同樣地製作假牙附件，並用 來測定特性。第3袠所示比較例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。又表面硏磨後由於熔 接使凹部殘留而不能獲得平滑的面，不能提供實際使用。1300709 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a denture attachment and a method of manufacturing the same, which maintains a denture by permanent magnetic attraction. [Prior Art] As disclosed in Japanese Patent Laid-Open No. Hei-4- 2272 5 No. The soft magnetic positioning piece 423 of 422 #, and the denture 43 0 held by the permanent magnet 402 and the positioning piece magnetic attraction on the root panel 422. The dummy 400 is a sealed circular plate 4 1 4 made of a soft magnetic stainless steel cup-shaped ring opening 401 and a non-magnetic stainless steel ring 4 1 5 arranged in a concentric shape, and the sealing circular plate 4 is arranged. The configuration of the permanent magnet 402 is sealed around the seal between the seal and the seal ring 4 15 and the cup ring 40 1 . The denture attachment 400 has no chemical stability for a long period of time, and can be used to satisfy a large attraction, etc. | The magnetic attachment 400 shown in Fig. 25, because such a configuration is before the fusion, at the cup-shaped ring mouth 4 0 There is a gap between 1 and the seal ring 4 1 5 due to the error of the inch. The cup-shaped ring mouth 40 1 and the seal ring are welded to mix the molten metal of the two to compensate for the gap. The sexual accessory 400 is such that the gap is welded around the molten metal in one direction, so that the sealing ring 4 15 is cold-stretched when the molten metal is cooled, and the welded portion is contracted while the gap of the unwelded portion is thereby It can be seen that the sealing disc 4 1 4 is greatly inclined. As shown by the surrounding magnets, the mouth of the tooth attachment that is placed in the 423 is placed so that the sealing ring 4 1 5 is tightly sealed. Therefore, the processing ruler 415 is enlarged when the magnetic compensation is advanced, and the 1300709 is welded to tilt the sealing circular plate 4 1 4, thereby not only expanding the gap between the sealing circular plate 4 14 and the cup-shaped annular opening 40 1 but also making the gap The unwelded portion is convex, and a step is generated between the two. As a result, a welded portion in which the range and depth of melting are not fixed is formed. Thereby, the joint strength is weakened, the sealing property is insufficient, and the manufacturing yield is lowered. Japanese Patent Laid-Open No. 1 1 - 1 3 7 5 7 6 is a denture attachment which discloses the structure shown in Fig. 26. The denture attachment 5 00 of Fig. 26 is a soft magnetic cup-shaped ring opening 501, ® having a recess for receiving the magnet body 502, and a magnet body 502 in the cup-shaped ring opening 501. The sealing plate of the opening is formed by a sealing plate 503, and the sealing plate 503 is a non-magnetic sealing ring which is joined by a soft magnetic plate-shaped annular ring 504 and a surrounding cladding (c1 ad). In the case of the fifth embodiment, the plate-shaped annular opening 504, the non-magnetic sealing ring 505, and the cup-shaped annular opening 501 are integrally welded at least on the surface side thereof. The magnetic attachment 500 shown in Fig. 6 is such that the sealing plate 5 1 3 is pressed in the opening portion of the cup-shaped ring opening 501, and the sealing plate 5 1 3 is inclined without being inclined in the peripheral welding. 'But when the denture attachment of the diameter of several mm is combined, it is difficult to press the plate-shaped ring opening 5 1 4 completely horizontally at the opening of the cup-shaped ring opening 5 0 1 'usually The plate-like ring opening 5丨4 that is pressed in is slightly inclined.  The state is formed to be welded at the cup ring 501. As a result, there is still a problem that the welded portion which is not fixed, such as the range and depth of melting, is formed. Further, in the small cup-shaped ring opening 501, it is necessary to press the small plate-shaped ring opening 514. It is necessary to have precise control, which is not only difficult to automate, but also has low productivity due to trouble. SUMMARY OF THE INVENTION 1300709 Accordingly, it is an object of the present invention to provide a denture attachment that allows the recess of the cup-shaped ring mouth to be sealed with superior weld quality, and has high magnetic attraction and good uranium resistance. Another object of the present invention is to provide a process for improving the production yield of such a dental accessory. [Description of the Invention] A denture attachment according to an embodiment of the present invention includes a permanent magnet, a cup-shaped ring formed of a corrosion-resistant soft magnetic material having a recess in which the permanent magnet is housed, and an embedded a sealing plate at an opening of the crotch portion of the cup-shaped annular opening; the sealing plate being a plate-shaped ring opening formed of a corrosion-resistant soft magnetic material and corrosion-resistant by an outer periphery disposed on the plate-shaped ring opening The non-magnetic material is formed by a sealing ring, and at least the point welding portion of the plurality of portions of the abutting portion of the cup ring mouth and the sealing ring is fixed by $, and the cup ring ring and the sealing ring are covered At least one full peripheral welded portion formed by the abutting portion & the sealing ring and the abutting portion of the plate-like annular opening, such that the sealing plate is joined to the cup ring D' to seal the permanent magnet. According to a preferred embodiment of the present invention, the magnetic accessory has a permanent magnet and a corrosion-resistant soft magnetic material having a concave portion that accommodates the permanent magnet and has a large diameter in the vicinity of the opening end. a cup ring α' and a seal embedded in the enlarged diameter portion of the cup-shaped ring mouth; the sealing plate is a plate-shaped ring D' formed of a corrosion-resistant soft magnetic material and is disposed on the plate a seal ring formed by a corrosion-resistant non-magnetic-7-1300709 material on the outer periphery of the ring-shaped ring mouth, and at least by the aforementioned enlarged diameter portion for fixing the cup-shaped ring mouth and the abutting portion of the seal ring a spot welding portion of the plurality of portions, and at least one of the enlarged portion of the cup-shaped ring opening and the abutting portion of the sealing ring and the pair of the sealing ring and the plate-shaped ring opening The all-around welded portion is such that the sealing plate is joined to the cup-shaped ring mouth, thereby sealing the permanent magnet in a state in which a magnetic gap is provided between the enlarged diameter portion and the permanent magnet. | Iron. Practically, the step of 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, comprising: a permanent magnet; and a cup-shaped ring opening formed of a corrosion-resistant soft magnetic material having a concave portion for accommodating the permanent magnet; and embedded in the cup shape a sealing plate for the opening of the recess of the ring mouth; the sealing plate is a plate-shaped ring mouth formed of a rust-resistant uranium soft magnetic material, and a corrosion-resistant non-magnetic material disposed outside the plate-shaped ring mouth a sealing ring formed of a material, and at least one of φ formed by at least one of covering the abutting portion of the cup-shaped ring opening and the sealing ring and the abutting portion of the sealing ring and the plate-shaped ring opening The surrounding welding portion engages the sealing plate in the cup ring □ to seal the permanent magnet while the open end of the cup ring ring is attached.  The near field is a reduced diameter that is substantially constant in width. According to still another embodiment of the present invention, the magnetic accessory is characterized in that it has a permanent magnet and a rust-resistant uranium soft magnetic material having the permanent magnet and having an enlarged diameter recess near the open end. a cup-shaped ring mouth and a sealing plate embedded in the enlarged diameter portion of the cup-shaped ring mouth; the sealing plate is a plate-shaped ring mouth formed of a rust-resistant uranium soft magnetic material, and is disposed on the plate a corrosion-resistant non-magnetic material surrounding the outer periphery of the ring-shaped ring is formed by a sealing ring, and the abutting portion of the enlarged diameter portion and the sealing ring and the sealing ring and the aforementioned At least one full-circumferential welded portion formed by the abutting portion of the plate-shaped annular ring, the sealing plate is joined to the cup-shaped ring opening, so that a magnetic gap is provided between the enlarged diameter portion and the permanent magnet In the state of the seal, the term "permanent fe iron" is described and the area near the open end of the cup-shaped ring mouth is a reduced diameter which is substantially constant in width. Preferably, the step of the diameter portion and the recess portion is 20 to 200 #111. The point fusion portion is only (a) the abutting portion of the cup ring mouth and the seal ring, or (b) the cup ring. Preferably, the abutting portion of the port and the sealing ring, and the abutting portion of the sealing ring and the plate-like ring opening are formed. The spot welding portion is preferably at equal intervals. p The aforementioned peripheral welded portion is ( a) a first welded portion formed to cover the abutting portion of the cup ring mouth and the seal ring across the entire circumference, and a butt portion covering the seal ring and the plate-shaped ring mouth across the entire circumference Forming a second welded portion formed by the method, or (b) covering the abutting portion of the cup-shaped annular opening and the sealing ring over the entire circumference, and the abutting portion of the sealing ring and the plate-shaped annular opening Preferably, the sealing plate and the surface of the cup-shaped ring mouth are surface-machined after being welded around the entire circumference. -9- 1300709 The method for manufacturing the denture accessory of the present invention is characterized in that the permanent magnet is housed in Corrosion resistant soft magnetic material The concave portion of the cup-shaped ring opening is formed by inserting a sealing plate formed of a plate-shaped ring opening of a corrosion-resistant soft magnetic material and a sealing ring of a corrosion-resistant non-magnetic material disposed around the outer periphery thereof in the cup-ring The opening portion of the mouth at least the butt joint portion of the cup-shaped ring mouth and the seal ring is spot-welded to a plurality of portions, and covers the abutting portion of the cup-shaped ring mouth and the seal ring, the seal ring and the plate shape In the manner of the abutting portion of the ring mouth, the cup-shaped ring mouth and the sealing plate are welded around the whole. (a) only fixing the abutting portion of the cup ring mouth and the sealing ring, or (b) fixing the cup shape Preferably, the abutting portion of the ring mouth and the sealing ring, and the manner in which the abutting portion of the plate-shaped ring mouth is spliced, and the point is welded to the plurality of portions, preferably (a) Forming a first welded portion that covers the abutting portion of the cup-shaped ring mouth and the seal ring across the entire circumference, and a manner of covering the second welded portion of the abutting portion of the seal ring and the plate-shaped ring opening across the entire circumference, Or (b) φ across the whole One of the cover around the cup port and the docking ring portion of the seal ring and the seal ring and the plate-like portion abutting the ring opening, to carry out the panoramic preferably welded. ^ After the entire circumference is welded, it is preferable to planarly process the sealing plate and the aforementioned cup-shaped ring. [Embodiment] The denture attachment of the present invention is referred to in the following description in detail, but the portion having the same digit number reference number is basically -10 1300709, which is a common portion in each embodiment. Therefore, the description of the first embodiment will be omitted. The detailed description of the embodiments will be omitted. 'Fig. 1 and Fig. 2 show a denture attachment according to a first embodiment of the present invention. The denture attachment has the same basic structure as the structure of Fig. 25. The cup-shaped ring opening 1 formed of a soft magnetic material formed by a concave portion of a circular cross section, and the permanent magnet 2 accommodated therein and the recessed portion 1. The sealing plate 3 in which the opening is embedded is formed. The sealing plate 3 is a member for forming a permanent magnetic circuit 2 in the recess 1 and for forming a magnetic circuit, a circular plate-shaped annular opening 4 formed of a soft magnetic material, and mounted on the outer peripheral surface thereof. A non-magnetic material of the same width is formed as a sealing ring 5. Further, the outer shape of the cup-shaped ring opening 1 and the sealing plate 3 is not limited to a circular shape, and a polygonal shape such as an elliptical shape or a quadrangular shape may be used. In the present invention, the cup-shaped ring mouth and the plate-shaped ring mouth are preferably made of a corrosion-resistant soft magnetic stainless steel (e.g., SUS447J1, SUSXM27, SUS444, etc.). Further, the seal ring is preferably made of a corrosion-resistant non-magnetic stainless steel such as S U S 3 1 6 L. In order to improve the combination efficiency of the denture attachment, the sealing plate 3 is a cylindrical material suitable for being a non-magnetic material of the sealing ring 5 in a round bar suitable as a soft magnetic material having a plate-like ring opening 4, which is to be drawn. The material is preferably formed by slicing into a predetermined thickness. The sealing plate obtained by slicing is subjected to a reduction atmosphere of 0.000 to 880 ° C 0 · 5 to 10 hours, preferably 7 0 0 to 8 5 0 X: in the reducing atmosphere.  Heat treatment at ~8 hours and cool to room temperature. The heat treatment conditions are below 60 (TC x〇.  At 5 hours, no joint is formed between the plate-shaped ring 4 and the seal ring 5, and at the interface of the plate-like ring 4 and the seal ring 5 at a heat treatment exceeding 880 ° C for 0.5 hours, the fusion is performed, for example, The magnetic attraction of the obtained denture attachment -11 - 1300709 shown in Comparative Example 3 described later is very low. By the heat treatment described above, the 0-plate body suitable as the plate-like ring opening 4 and the cylindrical material suitable as the sealing ring 5 are thinly (lightly) joined. The term "thin (lightly)" means that the area ratio of the molten portion in the joint interface between the circular plate body and the cylindrical material is 10% or less, and particularly preferably 5% or less. Further, the heat treatment of the foregoing conditions may be carried out before the slicing. Since the sealing plate 3 and the cup-shaped ring opening 1 are manufactured separately, it is inevitable that an error in the fitting size is produced. Therefore, instead of pressing the sealing plate 3 into the cup-shaped ring opening 1 as in the prior art denture attachment, and setting the outer diameter of the sealing plate 3 to be slightly smaller than the inner diameter of the cup-shaped ring opening 1, the sealing plate 3 can be easily inserted into the cup. The opening of the ring opening 1 is preferred. Since the sealing is surely performed by welding, the gap X between the sealing plate 3 and the cup-shaped ring opening 1 is preferably 1 〇 6 6 〇 // m. As shown in Fig. 1(b), the gap X is (the inner diameter of the cup-shaped ring opening 1) - (the outer diameter of the sealing plate 3). As shown in Fig. 1(b), the sealing plate 3 is fitted into the concave portion 1' in close contact with the upper surface of the permanent magnet 2 housed in the recessed portion 1' of the cup-shaped ring opening 1'. At this time, the upper surface of the sealing plate 3 substantially coincides with the upper surface of the cup-shaped ring opening 1. The sealing plate 3 and the cup-shaped ring port are welded by a laser or an electron beam, and the inner and outer permanent magnets 2 are sealed in the ring mouth and sealed with the outside. The welding portion, the point welding portion 6 provided at a plurality of portions so as to cover the abutting portion of the sealing plate 3 and the cup-shaped ring opening 1, and the butting portion and the sealing portion covering the cup-shaped ring opening 1 and the sealing ring 5 5 is formed by the entire peripheral welded portion 7 formed by the abutting portion of the plate-like annular opening 4. -12- 1300709 The spot welding portion 6 is a portion which is melted (fused) by irradiation of laser light at a point. At this time, if the laser light is slightly moved. In the first embodiment, the diameter of the laser spot is a part of the cup-shaped ring opening 1 holding the seal ring 5 and covering the plate-like ring opening 4. Therefore, by the spot welding portion 6, the plate-like ring opening 4 is integrally fixed to the cup-shaped ring opening 1. However, this is not an essential requirement. When the seal ring 5 and the plate-like ring-port 4 are firmly fixed by the drawing process, at least the abutting portions of the cup-shaped ring-shaped ring 1 and the seal ring 5 can be fixed by the spot-welding portion 6. . It is preferable that the spot welding portion 6 I is provided with a plurality of portions (e.g., 2 to 8 portions) at substantially equal intervals (point symmetry) with respect to the central axis of the sealing plate 3. In the illustrated example, the spot welding portion 6 is composed of four spot welding portions 6a to 6d. In the present embodiment, as shown in the first (c), the all-around welded portion 7 integrally covers the abutting portion of the cup-shaped ring opening 1 and the seal ring 5, and the seal ring 5 and the plate-like ring-mouth portion across the entire circumference. The way of the docking part of 4 is formed. The one-piece all-around welded portion 7 is preferably a case where the width of the seal ring 5 is narrower than 1 / 2 of the spot diameter. The integral all-around welded portion 7, φ is formed by simultaneously irradiating the laser light to the cup-shaped ring opening 1 and the plate-like ring opening 4 of the holding seal ring 5. The cup-shaped ring opening 1 has the same width w from the vicinity of the bottom surface of the recess 1' to the vicinity of the opening end. The denture attachment after the entire circumference is welded as shown in Fig. 1(c), • the outer diameter D 〇b near the bottom surface of the recess 1' with respect to the cup-shaped ring opening 1, and the outer diameter D near the open end of the recess 1' u ' is reduced (D 〇b > D 〇u ' ). Further, as shown in the first (d) diagram, after the planar processing, the outer diameter Dou' becomes Dou. The phenomenon that the outer diameter near the open end is reduced is considered to be caused by the following reason -13-1300709. When the cup ring 1 and the seal ring 5 are temporarily fixed by spot welding, the outer diameter of the open end of the recess of the cup ring 1 is not reduced. This is because the spot welding portions 6 a to 6d have a contraction force at the welded portion at the time of solidification after melting, but the volume of the spot welded portions 6 a to 6 d is small, so that the cup-shaped ring opening 1 cannot be pulled to the front. . Once the whole circumference is welded,  Then, the melted butted portion (welded portion) solidifies and contracts, so that the cup-shaped ring mouth 1 and the seal ring 5 act as tensile forces in the welded portion. At this time, the seal ring 5 is fixed by the spot weld portion on the unmelted side of the cup-shaped ring opening 1, so that the ® is not deformed when it is stretched at the welded portion. On the other hand, the cup-shaped ring opening 1 is not fixed at the outer circumference, so that it is stretched at the welded portion, and is deformed a little. When the position of the laser irradiation is shifted in the peripheral direction and the whole circumference is welded, the open end of the cup-shaped ring opening 1 is pulled up to the front side of the welded portion, and is substantially uniformly formed at the entire circumference of the welding. Zoom out. Further, once the entire circumference is welded without temporary fixing by spot welding, the unsealed seal ring is strongly pulled in the welded portion, and the sealing plate is largely φ. As shown in Fig. 1(d), the welded faces of the sealing plate 3 and the cup-shaped ring opening 1 are processed by honing or the like. The smooth surface 9 is formed by removing a part of the welded portion by planar processing. The smooth surface 9 of the denture attachment is embedded in the tooth.  The root panel of the slot will be in good contact, so the magnetic flux will not be disturbed. As a result, the dentures to which the denture attachment of the present invention is attached can be strongly held in the socket. Figure 2 is a manufacturing process showing the denture attachment of the 1st (&) diagram. First, the permanent magnet -14-1300709 iron 2 is housed in the recessed portion 圆形' of the circular cross section of the soft magnetic cup-shaped ring opening 1, and the sealing plate 3 is fitted into the opening of the recessed portion 1'. The front end portion of the inclined pressing member 3a is engaged at approximately the center of the sealing plate 3 to fix the sealing plate 3 [Process (a)]. In this state, to cover the cup ring mouth 1 and seal. The abutting portion 1 a of the ring 5 and the abutting portion 4 a of the sealing ring 5 and the plate-like ring opening 4 .  In the manner, the point fusion of the plurality of parts is performed in the order of 6a-6b-6c-6d.  [Process (b)]. By using the laser irradiation device 3b, by performing the spot welding in the order of the points 6 a - 6b - 6 c - 6d on the diagonal line, the sealing plate 3 receives a small contraction force when the molten metal is cooled and solidified, and can be balanced, It can therefore be used to prevent the bulging of the sealing plate 3 as in the prior art. The sealing plate 3 is strongly fixed at the cup-shaped ring opening 1 by the obtained spot welding portions 6a to 6d. When the sealing plate 3 is formed by laminating the plate-shaped ring opening 4 and the sealing ring 5 by a drawing process, and then joining the sealing plate by heat treatment or the like, the spot is welded or may be sealed only. The abutment 1a of the ring 5 and the cup-shaped ring opening 1 is performed. After the pressing member 3a is removed (process (c)), the spot diameter laser light is irradiated continuously or intermittently φ to cover the abutting portion 1a and the sealing ring 5 of the cup-shaped ring opening 1 and the sealing ring 5, and The abutting portion 4 a of the plate-shaped annular opening 4 is used to form the entire peripheral welded portion 7 [process (d)]. The sealing plates 3 are fixed at substantially equal intervals in the cup-shaped ring opening 1, so that the sealing plate 3 does not shift when the entire circumference is welded.  A uniform all-around weld 7 can be obtained under stable welding conditions. The shape of the molten portion, the amount of melting, and the depth of penetration are such that the opening portion of the cup-shaped ring opening 1 is completely sealed by the welding bead ‘substantially uniform across the entire circumference, and the permanent magnet 2 is hermetically sealed from the outside. It is preferable to use the laser light for the full circumference welding to have the same spot diameter as the laser light for the fusion of -15-1300709 points. Fig. 3(a) is a view showing the surface state of the cup-shaped ring opening 1 and the sealing plate 3 after the entire circumference is welded, and Fig. 3(b) is a sectional view thereof. In the present example, the spot welding portions 6a to 6d hide the entire peripheral welded portion 7, and the point of the figure 7' is the end of the all-around welded portion. - Fixing the cup ring 1 after the welding is completed on the plane honing machine, and performing the plane processing (honing) on the welding surface of the cup ring 1 and the sealing plate 3 at a predetermined depth δ (process) e)]. The depth of cut 5 is the same height as the cup-shaped ring opening 1 and the sealing plate 3, and is preferably ΙΟ/zm 〜 100//m in such a manner that the concave I convex of the entire surrounding welded portion 7 does not remain. 40/zm ~ 60/zm. If it is less than 10/zm, it will have irregularities on the surface. If one of the 5 is more than 100 // m, the volume of the welded portion becomes too small, which causes the welding strength to decrease. The sealing plate 3 is not inclined at the cup-shaped ring opening 1 and is welded substantially in parallel. Therefore, the shape, the amount of melting, and the depth of fusion of the molten portion after planar processing are also substantially uniform across the entire circumference, and the molten portion is not locally shallow or a through hole is formed. To reduce the seal. | Used to stabilize the non-magnetic phase (an st en ite "steel structure" phase) of the welded joint, and to restore the deteriorated magnetic force by mechanical distortion of the permanent magnets attached to the magnetic attachment The purpose of the plane after processing.  It is better to carry out heat treatment. The heat treatment is in the inert gas atmosphere, 600.  ~1 lOOt: x〇· 5~10 hours, preferably 700~900 °C xl~5 hours heating, it is better to cool to room temperature. The heat treatment conditions are less than 600 °C X 0 .  After 5 hours, the effect of heat treatment is not sufficient, and when it exceeds 1 1 0 0 °C×10 hours, the magnetic force is greatly reduced due to the coarsening or re-sintering of the crystal grains of the permanent magnets -16-1300709 low 'can not ignore the cup shape Thermal deformation of the ring and the sealing plate. : The denture attachment of the present invention can be obtained. As shown in the first figure (c), after the cup ring mouth 1 and the seal 'sink X' are all welded around, the cup ring ring is welded only on the inner side to fix the sealing plate 3 to the cup ring mouth 1 Further, the deformation is performed in a substantially uniform manner in the peripheral direction. About half of the amount of deformation X. In this case, Z' is formed at both ends in the I-diameter direction toward the inner side of the cup-shaped ring, so that the whole is 2z. In the case where the surface treatment is such that the sealing plate 3 is reduced by about 20%, the plane amount z is 80% of about z'. In general, the amount of deformation 2 is the degree. 4(a) and 4(b) are diagrams showing the denture attachment according to the present embodiment, and FIG. 5 is a diagram showing the manufacturing process state, which is the first to cover the cup-shaped ring opening 21 and the sealing ring 25. The spot welds 2 6 e, 2 6 g, 2 6 i, 2 6 k, and the spot welds 26 f, 26h covering the second butt portion 24a of the seal ring φ ring 24 are simultaneously at the first butt joint 21a And the second butting portion 24a is an individual surrounding welded portion 27a and a second all-around welded portion 27b. Adjacency .  26e and 26f, 26g and 26h, 26i and 26j, and 26k_ overlap, and the first all-around welded portion 27a and the second full circumference do not overlap. Since the non-magnetic seal ring 25 is exposed between the first all-around welded portion 27a and the second full portion 27b, the magnetic flux between the cup-shaped ring-shaped opening 2 1 and the plate-like ring-shaped opening 24 can be effectively short-circuited. Finally, the shape of the magnetic sealing plate 3 is made. By the point around the welding station z ′ is the gap deformation amount is, for example, by the deformation of the work after the work 1 0 ～ 4 0 // m the second real. The embodiment of the butt joint 2 1 a I 2 5 and the plate shape, 26j, 26b form the first full weld portion and 261 is the weld portion around the weld portion 2 7 b to prevent the -17-1300709 second implementation The manufacturing method of the denture attachment of the form is the same as that of the first embodiment except for the individual formation of the joint portions 26 e to 261 and the entire peripheral welded portions 27 a and 27 b . <6(a) and 6(b) are denture attachments according to the third embodiment of the present invention, and Fig. 7 is a diagram showing the manufacturing process thereof. The denture attachment of the present embodiment has the spot welds 36e, 36g, 36i, 36k for covering the cup-shaped ring opening 31 and the seal ring 35, and for the sealing ring. 3 5 and the point-welding portions 36f, 36h, 36j, 361 of the second butt portion 3 4 a of the plate-like ring mouth 3 4 , and at the same time, the first butt joint portion 3 la and the second butt portion 34 a have the first full circumference welding The portion 37a and the second all-around welded portion 37b are the same as in the second embodiment, but the adjacent spot welded portions 36e and 36f, 36g and 36h, 36i and 36j, and 36k and 361 are overlapped, and the first full circumference is The welded portion 37a and the second all-around welded portion 37b are also overlapped, and are different from the second embodiment. For example, reference numeral 36m is a portion where the spot weld portions 36k and 361 overlap, and reference numeral 37c is a portion where the first full circumference • the outer weld portion 37a and the second full outer weld portion 37b overlap. As shown by the dotted line in Fig. 6(a), the overlapping portion of the first all-around welded portion 37a and the second all-around welded portion 37b is at the substantially central portion of the seal ring 35, but almost does not mix into the cup shape. The soft magnetic material of the ring 3 1 or the plate ring 3 4 is not particularly problematic on the magnetic circuit. Further, the above overlapping portions are almost removed by the planar processing. Fig. 8(a) and Fig. 8(b) are diagrams showing a denture attachment according to a fourth embodiment of the present invention. The denture attachment of the embodiment has a first abutting portion for covering the -18 - 1300709 cap cup ring 41 and the sealing ring 45, and a second covering cover for the sealing ring 45 and the plate ring ring 4 4 The point welding portions 4 6 a to 46 d of the butting portion have the first full circumference welding portion 47 a and the second full circumference welding portion 47 b in the first butting portion and the second butting portion. The spot welding portions 46a to 46d are formed in the same manner as in the first embodiment, and the first all-around welding portion 47a- and the second all-around welding portion 47b are formed in the same manner as in the third embodiment. Fig. 9(a) and Fig. 9(b) are diagrams showing a denture attachment according to a fifth embodiment of the present invention. The denture attachment of the present embodiment is the same as the first embodiment except that the N i plating layer 5 4b is provided between the plate-like ring opening 5 4 of the sealing plate 53 and the sealing ring 55. By making the N i plating layer 5 4 b as a thickness of 1 5 // m, the sealing plate 53 only reduces the radius dimension of its portion. Once the Ni plating layer 54b is melt-mixed with the soft magnetic material of the sealing plate 53, it is changed to a non-magnetic alloy, so that magnetic flux leakage between the plate-like ring opening 5 4 and the cup-shaped ring opening 51 can be effectively prevented. Fig. 1 is a view showing a denture attachment member according to a sixth embodiment of the present invention. The denture attachment of the present embodiment is characterized in that it has a cup-shaped ring opening 61 having an enlarged diameter portion 6 1 c. Other than that, it is the same as the denture attachment of the second embodiment. In order to make the magnetic gap effectively prevent the plate-shaped ring mouth 6 4 .  And the shallow magnetic flux between the cup-shaped ring mouth 6 1 acts to expand the diameter portion 6 1 c .  The depth in the radial direction (w-w2) is preferably about 20 to 200/zm. Further, the height h of the diameter portion 6 1 c (the distance between the upper end surface of the cup-shaped ring opening 6 1 and the lower end portion of the step of 6 1 d) is preferably 2 0 0 to 4 0 0 // m. The inclination angle of the step of 6 1 d (the angle from the horizontal line) is preferably 0 to 60 °. The magnetic attachment -19-Ϊ300709 of the first figure is characterized by an outer diameter near the bottom of the enlarged diameter portion 6 1 c with respect to the concave portion of the cup-shaped ring opening 61, and near the open end of the recessed portion 6丨c The field is to reduce the diameter. In the case of this embodiment, in order to effectively prevent leakage of magnetic flux,  Sealing ring 6 5 . The inner end portion is positioned on the inner side of the side surface of the permanent magnet 62, preferably. Therefore, the thickness of the seal ring 65 is preferably from 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 the examples. In each of the examples and the comparative examples, the cup-shaped ring-shaped ring and the disk-shaped ring-shaped ring were made of corrosion-resistant soft magnetic stainless steel SUS447 (1) (saturation magnetization Bs: 1 .  28T) is formed, and the seal ring is formed by a corrosion-resistant non-magnetic stainless steel SUS 3 1 6 L. The disk-shaped permanent magnet is made of an anisotropic sintered magnet of Nd-Fe-B system (NEOMAX Co., Ltd. NMX-48CH, residual flux density Br : 1 .  35T, maximum energy product (BH) max : 366kJ / m3 ) to form. The permanent magnet is the outer diameter of 2. 55mmx height 0. 4mm. [Example 1] A cup-shaped ring mouth and a sealing plate of the size shown in Table 1 were used. The sealing plate is a cylinder made of a circular plate-shaped ring to embed a cylinder suitable as a sealing ring, and is sliced to a thickness of 0 · 2 mm after being drawn, in a reducing atmosphere. Heat treatment at 80 ° C and cool to room temperature. The seal plate obtained was obtained by gently engaging the seal ring around the outer periphery of the disc-shaped ring. As shown in Figure 1 (b), along the diameter 2 as shown in Table 2.  The circumference of 4 mm (with point 0 of the 1st (a) diagram as the center) is separated by 0 at equal angular intervals of 90 °.  The 5mm point is straight -20-1300709 diameter laser light is fixed by spot welding, and secondly along the diameter 2 .  The circumference of 4 mm is welded by a laser with a point diameter of 〇 · 5 mm (Fig. 1 (c)). As shown in Fig. 3(b), the cup-shaped ring opening 1 after welding is an opening portion for narrowing only z'. This is because the open end of the cup-shaped ring opening 1 in the direction of the gap X of the mouth-filled cup-shaped ring and the sealing plate 3 is deformed in the vicinity of the field. Finally, the polishing is honed to a depth δ of 5·0 5 mm, and the maximum surface roughness R ma X is processed to be 1 /zm or less, and the first (a) and the first (d) are produced. Show the denture attachment. After the plane processing, the depth of the b-welding portion is uniform. 1mm. After planar honing, heat treatment was carried out for 1 hour in an argon atmosphere at 800 °C. The smaller outer diameter of the opening of the cup-shaped ring opening 1 is reduced to z after the plane honing (the 表 in the third table) [Fig. 1(d)]. As shown in Figure 1 (d), the magnetic attachment is magnetized after planar honing. For the obtained denture attachment, the presence or absence of burrs between the cup-shaped ring mouth 1 and the seal ring 5, the error of the outer diameter of the cup-shaped ring opening 1 and the amount of reduction z, the amount of protrusion t of the sealing plate 3, and magnetic attraction are measured. force. The measurement results are shown in Table 3. For the measurement of magnetic attraction, the device shown in Fig. 2 is used. The measuring device includes a suction cup 93 for fixing the denture attachment 90, a digital pressure gauge 95 for connecting the suction cup 93 via the adapter 94, and a micro-motion device 96 for moving the digits, the pressure gauge 95, and supporting The test of the micro-motion device 96 - the table 9 7 and the support member 92 fixed to the test stand 97 by the support positioning piece 9 1 are formed. The denture attachment 90 fixed to the suction cup 93 and the positioning piece 9 1 fixed to the support member 92 are slid in a state in which the micro-motion device 96 is slowly raised 'when the denture attachment 90 is separated from the positioning piece 9 1 Read the digital pressure gauge - 21 - 1300709 95. The magnetic attraction force measurement was also performed on 10 denture attachments 90, and the average enthalpy of the obtained enthalpy was taken as the magnetic attraction force. [Examples 2 to 6] The cup-shaped ring opening and the sealing plate shown in the first table were used (the sealing plates were all gently joined to the outer periphery of the disk-shaped ring opening in the same manner as in the first embodiment), such as The combination shown in Fig. 5 is along the diameter 2 so as to cover the abutting portion of the cup-shaped ring opening 2 1 and the sealing ring 25 shown in the second table.  The circumference of 6 mm (with the point 0 of the 5th (a) figure as the center) is at an equiangular interval of 90° by 0. 2mm point of laser light is used for the first point of fusion, while covering the abutment of the seal ring 25 and the plate-like ring 24 along the circumference of the diameter of 2 · 2mm (the point of the 5th (a) figure is 0 Center) by 0° at equal angular intervals.  The laser beam of 2 mm dot diameter is used for the second spot welding, and is temporarily fixed toward the cup-shaped ring opening 21 of the sealing plate 23. Secondly, along the same diameter as the circumference welded to the first point. The circumference of 6mm is by 0. 2mm point of laser light is used to perform the first full circumference welding, while the same diameter along the circumference of the second point is welded. The circumference of 2mm is made by 〇. Laser light of 2 mra dot diameter is used for the second all-around welding [Fig. 5(d)]. Finally pondering to 〇. 〇5mm depth The flattening of the welded surface is made to produce the denture attachment shown in Figures 4(a) and (b). The obtained denture attachment 'is the same as in the first embodiment' to determine whether there is a burr between the cup-shaped ring mouth 2 1 and the seal ring 25, the outer diameter of the cup-shaped ring opening 21, and the amount of reduction z, the sealing plate 2 The amount of protrusion t of 3 and the magnetic attraction force. The measurement results are shown in Table 3. [Embodiment 7] -22- 1300709 The same as in the second embodiment except that the spot diameter of the laser light for the spot welding and the full circumference welding shown in Table 2 is 0. 3 mm, respectively. The denture attachment is shown in the figure and the characteristics are determined. The measurement results are shown - in Table 3. .  [Example 8] As shown in Fig. 2, in the same manner as in Example 7, except that the entire circumference was welded, the denture attachment shown in Fig. 8 was produced and the characteristics were measured. The measurement results are shown in Table 3. ® [Example 9] A dummy attachment as shown in Fig. 9 was produced in the same manner as in the first embodiment except that a Ni plating layer having a thickness of 15 @ m was provided between the plate-like ring opening and the seal ring. And to determine the characteristics. The measurement results are shown in Table 3. [Examples 1 0 to 1 4] As shown in Table 1, except for the use of the cup-shaped ring opening having a step in the concave portion, the same as in Examples 2 to 6 was used to produce the first 2 (c) False φ tooth attachment. A micrograph of the cross section of the welded portion is shown in Figures 1 (a) and (b). It is apparent from the 1 2 (a) and (b) diagrams of the micrographs corresponding to the 1 1 ( a ) and (b ) diagrams that the open end of the concave portion of the cup-shaped ring opening 7 1 is close.  The outer side of the crucible is relative to the perpendicular U-U (the perpendicular U-U is parallel to the permanent magnet).  The left end side contour line or the right end side contour line v _ v ) of 72 is slightly inclined to the inner side (straight line T - T ). The distance z from the straight line s - S on the surface of the denture attachment - S and the straight line T - T is the amount of reduction in the outer diameter of the cup-shaped ring opening 7 1 . The measurement results of the characteristics of each denture attachment are shown in the third table. -23 - 1300709 It can be seen from Fig. 1 2 (c) that the outer diameter Dob in the vicinity of the bottom of the enlarged diameter portion of the concave portion of the cup-shaped annular opening 71 (position P), the open end (position Q) of the concave portion The outer diameter is reduced (Dob > Dou). Further, the width w2 of the cup-shaped ring opening 71 is constant from the vicinity of the bottom of the enlarged diameter portion (position P) to the open end of the recess (position Q). * [Example 1 5] The dot diameter of the laser light for the spot welding and the full circumference welding shown in Table 2 is set to 0.  The same as Example 10 except for 3 mm, it was used to make a denture attachment. A micrograph of the cross section of the welded portion is shown in Figures 13(a) and (b). Further, Fig. 14 (a) and (b) are line diagrams corresponding to the microscope photographs of Figs. 13(a) and (b), and Fig. 14(c) is a cross-sectional view showing the entire denture attachment. The measurement result of the characteristics of the denture attachment is shown in the third table. [Comparative Example 1] As shown in Tables 1 and 2, the same cup-shaped φ ring groove and sealing plate as in Example 1 (the gap between the two was 3 0 // m) was used, and the spot welding was not performed. In the same all-around welding as in Embodiment 1, as shown in Fig. 15, the sealing plate 110 is completely protruded from the cup-shaped ring opening 1 〇1, and the entire circumference cannot be completed.  Surround welding (refer to Table 3). .  [Comparative Example 2] As shown in Tables 1 and 2, the same cup-shaped ring mouth and sealing plate as in Example 7 (the gap between the two was 3 〇 #m) was used, and the spot welding was performed without performing the spot welding. In the case of the same all-around welding of Example 7, the sealing plate was completely protruded from the mouth of the cup-shaped ring -24-1300709, and the all-around welding could not be completed. [Comparative Example 3] _ As shown in Tables 1 and 2, the outer diameter of the sealing plate and the inner diameter of the cup-shaped ring-recessed portion were the same, except that the sealing plate was pressed into the concave shape of the cup-shaped ring.  The same as in the first embodiment except for the part, it was used to make a denture attachment. Pressing in the seal - sealing the board is a cumbersome job. The obtained denture attachment, as shown in Fig. 16, has a burr 2 0 1 b between the cup-shaped ring mouth 2 0 1 and the seal ring 2 0 5, and the cup-shaped ring mouth 20 1 is slightly deformed on the outer side. . The direction of deformation is opposite to that of the edentulous attachment of the present invention, so that the amount of deformation z (the radius of the outer circumference 20 1 R - the radius of the outer circumference 201 r) is indicated by a minus sign. 20 1R is the outer circumference after the full circumference is welded, and 2 0 1 r is the outer circumference before the welding is performed after pressing. The measurement results of the characteristics of the denture attachment are shown in Table 3. As shown in Fig. 16, the outer circumference of the end face of the cup-shaped ring mouth 20 1 is expanded from 201 r to 20 1R by full-circumferential welding, and the area of the end face of the cup-shaped ring mouth 201 is increased to SK [= Srxa (α is a fixed number, α > 1)]. The magnetic flux generated from the permanent magnetic φ iron 202 does not change, so the relationship between the area of the end face of the cup-shaped ring opening 201 and the resulting magnetic flux is based on BxSr = B, xSR (Β and Sr are areas before expansion) The magnetic flux density and the area of the end face, 3, and Sr are the area.  The magnetic flux density after expansion and the area of the end face are expressed. Therefore, B, / α. .  The magnetic attraction is the ratio of the area of the magnetic flux and the square of the magnetic flux density, so the ratio of the magnetic attraction F' after expansion and the magnetic attraction F before expansion becomes (SrxB'2) / (Si* xB2) =Β'/Β=1/α. In this way, by expanding the outer circumference of the cup-shaped ring mouth 2 0 1 , the magnetic attraction is lowered by -25-1300709. In contrast, any of the magnetic attachments of the embodiments is such that the end surface area s (=SmxBm/Bs) of the cup ring 'port is the most appropriate ( <Sr <SR) is set. B s is the saturation magnetic force of the cup-shaped ring mouth. Bm is the residual magnetic flux of the permanent magnet. Density, Sm is the sectional area of the permanent magnet. Further, when the surface area of the end face of the ring is smaller than S, the passage of the magnetic flux is deteriorated (causing local magnetic saturation), so that a remarkable magnetic flux leakage is formed, and the magnetic attraction force is greatly lowered. The present invention is designed to reduce the magnetic attraction of the most suitable S obtained by shrinking the outer periphery of the cup-shaped ring. The measurement results of the magnetic attraction force of Comparative Example 5 shown in Table 3 were lower than those of the measurement results of Example 1. Fig. 17 is a view showing a state in which a gap is formed on one of the abutting portions of the cup-shaped ring opening 21 and the sealing ring 2 1 5 when the sealing plate is pressed into the cup-shaped ring opening 21 1 . The inner diameter of the cup-shaped ring mouth 21 1 and the outer diameter of the sealing plate are equal, so that one end of the outer periphery of the sealing plate is placed in the opening φ portion of the cup-shaped ring opening 21, and the sealing plate is inevitably The other end of the outer circumference is hung on the opening edge of the cup-shaped ring opening 2 1 1 . When the sealing plate is press-fitted into the opening of the cup-shaped ring opening 21 1 in such a state, at least one of the cup-shaped ring-shaped opening 2 1 1 and the sealing plate is cut at the abutting portion to generate a burr, and at the same time, A portion of the burr in the butt joint creates a gap. The sample shown in Fig. 7 is that the plate-shaped ring port 2 1 4 and the seal ring 2 1 5 are firmly fixed, so that no gap is formed in the butted portion. In Fig. 18, it is shown that the plate-like ring mouth 3 0 4 and the seal ring 305 are not firmly fixed to the lower sealing plate when pressed into the cup-shaped ring mouth 3 0 1 , respectively, in the cup-shaped ring mouth -26- 1300709 3 0 1 The gap between the butt joint of the coin seal ring 3 〇 5 and the plate-shaped ring mouth 3 〇 4 and one of the sealed abutting portions is offset. Fig. 18 is a magnified view of part A of Fig. 18, and Fig. 20 is a part of the microscope - it is clearly shown from Fig. 19 and Fig. 20 that the mating portions of the cup-shaped ring ports 3〇1 and • 3 0 5 remain. Unedged 3〇51). - Fig. 21 is a photograph showing the vicinity of the butting portion of the sample of Fig. 20'. Fig. 22 is a schematic diagram corresponding to this. The seal before the press-in is a rectangular cross-section, so that the outer end of the seal ring 3 〇 5 is confirmed between the corner of the seal ring 305 and the cup ring 301: 301b, 305b ° [ Comparative Example 4: The outer diameter of the sealing plate and the inner diameter of the cup-shaped recessed portion were the same as in the seventh embodiment, except that the sealing plate was pressed into the cup-shaped ring portion, as in the seventh embodiment and the second table. Used to make denture attachments. Pressing in is a cumbersome job. The φ of the characteristics of the obtained denture attachment is shown in the third table. The results of the magnetic attraction of Comparative Example 4 shown in Table 3 were lower than those of the measurement results of Example 1. [Comparative Example 5], as shown in Tables 1 and 2, except for the plate-shaped ring opening and sealing. The N i plating layer having a thickness of 1 5 // m was used as the denture attachment as in Comparative Example 5, And used to determine characteristics. The results of the measurement of the magnetic attraction force of Comparative Example 5 shown in the third table are shown to be lower than the results of the measurement. The press-in of the sealing plate is a troublesome operation. The ring 30 5 .9 is a photograph. Seal ring Microscope Ring 30 5 cut. The concave sealing plate of the mouth with the burr ring is used to measure the sample between the measuring rings. 3rd Example 1-27-1300709 [Comparative Example 6] Dentures were produced in the same manner as in Example 1 except that the gap x between the cup-shaped ring mouth and the sealing plate was 70 μm as shown in Tables 1 to 3. Attachment and used to determine characteristics. The measurement of the magnetic attraction force of Comparative Example 6 shown in Fig. 3 was lower than that of the measurement results of Example 1. The results are shown in the third table. Further, press-fitting of the sealing plate is a troublesome work. Further, since the surface is honed and the recess is left by the fusion, a smooth surface cannot be obtained, and practical use cannot be provided.

-28- 1300709-28- 1300709

第1表 例N0 · 各構件之尺寸(mm) 杯狀環口 密封板 外形⑴ 凹部(2) 段差 圓臟環口⑴ Ni(3) 密封板⑷ 實施例1 3.50x1.3 2.60x0.6 >frrr ^\\\ 2.17x0.2 無 2.57x2.17x0.2 實施例2 3.50x1.3 2.60x0.6 >frrr- y\\\ 2.17x0.2 'Tin? /\\\ 2.57x2.17x0.2 實施例3 3.50x1.3 2.60x0.6 2.19x0.2 ίχττ 拂 2.59x2.19x0.2 實施例4 3.50x1.3 2.60x0.6 無 2.18x0.2 /ττΓ Mil 2.58x2.18x0.2 實施例5 3.50x1.3 2.60x0.6 無 2.16x0.2 2.56x2.16x0.2 實施例6 3.50x1.3 2.60x0.6 那 2.15x0.2 無 2.55x2.15x0.2 實施例7 3.50x1.3 2.60x0.6 >fnr 2.17x0.2 無 2.57x2.17x0.2 實施例8 3.50x1.3 2.60x0.6 無 2.17x0.2 無 2.57x2.17x0.2 實施例9 3.50x1.3 2.60x0.6 無 2.14x0.2 有⑴ 2.57x2.17x0.2 實施例10 3.50x1.3 2.75x0.6 有⑺ 2.32x0.2 2.72x2.32x0.2 實施例11 3.50x1.3 2.75x0.6 有⑺ 2.34x0.2 >fnT· 2.74x2.34x0.2 實施例12 3.50x1.3 2.75x0.6 有⑺ 2.33x0.2 ifrrr 4 \ \\ 2.73x2.33x0.2 實施例13 3.50x1.3 2.75x0.6 有⑺ 2.31x0.2 >fnr /vv\ 2.71x2.31x0.2 實施例14 3.50x1.3 2.75x0.6 有⑺ 2.30x0.2 無 2.70x2.30x0.2 實施例15 3.50x1.3 2.75x0.6 有⑺ 2.32x0.2 無 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 無 2.57x2.17x0.2 比較例3 3.50x1.3 2.60x0.6 無 2.20x0.2 無 2.60x2.20x0.2 比較例4 3.50x1.3 2.60x0.6 無 2.20x0.2 無 2.60x2.20x0.2 比較例5 3.50x1.3 2.60x0.6 無 2.17x0.2 有⑹ 2.60x2.20x0.2 比較例6 3.50x1.3 2.60x0.6 >fnr 2.13x0.2 無 2.53x2.13x0.2 註：（1)外徑X高度 (2)內徑X深度 (3 ) N i電鍍層 (4)外徑X內徑X高度 29- 1300709 (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/z m) ° (6 )僅在板狀環口之外周圍形成厚度1 5 # m的Ni電鍍層（含 Ni電鍍層之板狀環口的外徑是2.20// m)。 (7)與第10圖同樣，從開口端到深度〇.30mm爲止具有擴大直 • 徑部（內徑：2.75mm)，到深度〇.3〇mm〜〇.38mm具有傾斜之段差， • 比此更深的部分之內徑是2.60mm。Table 1 Example N0 · Dimensions of each member (mm) Cup-shaped ring seal plate shape (1) Concave portion (2) Segment difference round ring mouth (1) Ni (3) Seal plate (4) Example 1 3.50x1.3 2.60x0.6 &gt ;frrr ^\\\ 2.17x0.2 no 2.57x2.17x0.2 Example 2 3.50x1.3 2.60x0.6 >frrr- y\\\ 2.17x0.2 'Tin? /\\\ 2.57x2. 17x0.2 Example 3 3.50x1.3 2.60x0.6 2.19x0.2 ίχττ 拂2.59x2.19x0.2 Example 4 3.50x1.3 2.60x0.6 No 2.18x0.2 /ττΓ Mil 2.58x2.18x0. 2 Example 5 3.50x1.3 2.60x0.6 no 2.16x0.2 2.56x2.16x0.2 Example 6 3.50x1.3 2.60x0.6 then 2.15x0.2 no 2.55x2.15x0.2 Example 7 3.50 X1.3 2.60x0.6 >fnr 2.17x0.2 No 2.57x2.17x0.2 Example 8 3.50x1.3 2.60x0.6 No 2.17x0.2 No 2.57x2.17x0.2 Example 9 3.50x1. 3 2.60x0.6 no 2.14x0.2 Yes (1) 2.57x2.17x0.2 Example 10 3.50x1.3 2.75x0.6 Yes (7) 2.32x0.2 2.72x2.32x0.2 Example 11 3.50x1.3 2.75x0 .6 Yes (7) 2.34x0.2 > fnT· 2.74x2.34x0.2 Example 12 3.50x1.3 2.75x0.6 Yes (7) 2.33x0.2 ifrrr 4 \ \\ 2.73x2.33x0.2 Example 13 3.50 X1.3 2.75x0.6 Yes (7) 2.31x0.2 >fnr /vv\ 2.71x2.31 X0.2 Example 14 3.50x1.3 2.75x0.6 Yes (7) 2.30x0.2 No 2.70x2.30x0.2 Example 15 3.50x1.3 2.75x0.6 Yes (7) 2.32x0.2 No 2.72x2.32x0. 2 Comparative Example 1 3.50x1.3 2.60x0.6 No 2.17x0.2 No 2.57x2.17x0.2 Comparative Example 2 3.50x1.3 2.60x0.6 No 2.17x0.2 No 2.57x2.17x0.2 Comparative Example 3 3.50x1.3 2.60x0.6 no 2.20x0.2 no 2.60x2.20x0.2 Comparative Example 4 3.50x1.3 2.60x0.6 no 2.20x0.2 no 2.60x2.20x0.2 Comparative Example 5 3.50x1.3 2.60x0.6 no 2.17x0.2 Yes (6) 2.60x2.20x0.2 Comparative Example 6 3.50x1.3 2.60x0.6 >fnr 2.13x0.2 No 2.53x2.13x0.2 Note: (1) OD X Height (2) Inner diameter X Depth (3) N i Plating layer (4) Outer diameter X Inner diameter X Height 29- 1300709 (5) Place a Ni plating layer of thickness 15# m around the outer circumference of the circular plate-shaped ring mouth (The outer diameter of the plate-like ring opening containing the Ni plating layer is 2.17/zm) ° (6) The Ni plating layer having a thickness of 15 # m is formed only around the outside of the plate-shaped ring mouth (the plate-like ring containing the Ni plating layer) The outer diameter of the mouth is 2.20 / / m). (7) As in the case of Fig. 10, there is an enlarged straight diameter portion (inner diameter: 2.75 mm) from the open end to a depth of 3030 mm, and a depth difference of 〇.3〇mm~〇.38mm to the depth, • ratio The inner diameter of this deeper portion is 2.60 mm.

-30- 1300709 第2表熔接規格明細表-30- 1300709 Table 2 welding 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η 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 2.64-2.2 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 Μ ^\\\ 2.6+2.2 0.3+0.3 比較例3 4τττ. τΗΤΤ /\\\ 2.4 0.5 比較例4 >frrr 無 2.6+2.2 0.3+0.3 比較例5 Μ ^\\\ 2.4 0.5 比較例6 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 -31 - 1300709Example No · The diameter of the positioning circumference of the all-weld portion of the spot welded portion (mm) Angle interval η Point diameter (mm) Diameter of the positioning circumference (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 Implementation 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 2.64-2.2 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 Μ 2.4 0.5 Comparative Example 2 Μ ^\\\ 2.6+2.2 0.3+ 0.3 Comparative Example 3 4τττ. τΗΤΤ /\\\ 2.4 0.5 Comparative Example 4 >frrr No 2.6+2.2 0.3+ 0.3 Comparative Example 5 Μ ^\\\ 2.4 0.5 Comparative Example 6 2.6+2.2 90+90 0.2+0.2 2.6+2.2 0.2+0.2 -31 - 1300709

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 (_ 減少量 ζ(1)(μπι) 實施例1 30 有 無 2 12 0 6.38 實施例2 30 有 yfnr Ws 2 12 0 6.43 實施例3 10 有 >fl 1 Γ. 热 2 4 0 6.43 實施例4 20 有 無 2 8 0 6.43 實施例5 40 有 /frrr 热 2 16 0 6.43 實施例6 50 有 >fnr. 4 20 0 6.43 實施例7 30 有 無 2 12 0 6.33 實施例8 30 有 Μ j\\\ 2 12 0 6.33 實施例9 30 有 jfrrt IMI 2 12 0 6.43 實施例10 30 有 dnt， 2 12 0 6.62 實施例11 10 有 4τττ j\\\ 2 4 0 6.62 實施例12 20 有 Αλ π* 2 8 0 6.62 實施例13 40 有 M 2 16 0 6.62 實施例14 50 有 ^frnr 無 4 20 0 6.62 實施例15 30 有 dnt 2 12 0 6.62 比較例1 30 無 >fnr M >0.2 比較例2 30 >frrr dnt >0.2 比較例3 0 fnr It It J \ w 有 35 -20 0 6.23 比較例4 0 M ^\\\ 有 35 -20 0 6.08 比較例5 0 有 35 -20 0 6.23 比較例ό 70 有 ^rrr 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 鈾。將結果顯示於第4表。 -32- 1300709 第4表 例No. 生銹 食鹽水之分析結果 實施例1 ίΕΕ J\\\ 全部未檢測出Nd 實施例8 Μ 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Nd • 根據上述結果可知，在進行全周圍熔接之前進行點溶接 的貫施施例1及8之假牙附件，相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，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，所以密封板表面不會傾斜而與杯狀環口 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，使耐鈾性良好富有耐久性，以廉 • 價可小型化且薄型化。 【圖式簡單說明】 弟1(a)圖是顯不根據本發明之第一^實施形態的假牙 附件之平面圖。 第1 ( b )圖是顯示第1 ( a )圖之假牙附件的全周圍熔 -33 - 1300709 接前之狀態的剖面圖。 第1 ( c )圖是顯示第1 ( a )圖之假牙附件的全周圍熔 接後之狀態的剖面圖。 第1 ( d )圖是第1 ( a )圖之A - 0 - A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l(a)圖之假牙附件的製程 槪略圖（右側之各圖是顯示左側圖的A - 0 - A剖面）。 第3 ( a )圖是顯示第1 ( a )圖之假牙附件的熔接面’ t 平面加工前之狀態平面圖。 第3(b)圖是第3(a)圖中之Α-0-Α剖面圖。 第4 ( a )圖是顯示根據本發明之第二實施形態的假牙 附件之平面圖。 第4(b)圖是第4(a)圖之Β-0-Β剖面圖。 第5圖是顯示用來製造第4 ( a )圖之假牙附件的製程 槪略圖（右側之各圖是顯示左側圖的B - 0 - B剖面）。 | 第6 ( a )圖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(a)圖是第6(a)圖之C-0-C剖面圖。 . 第7圖是顯示用來製造第6(a)圖之假牙附件的製程 槪略圖（右側之各圖是顯示左側圖的C - 0 - C剖面）。 第8 ( a )圖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(b)圖是第8(a)圖之D-0-D剖面圖。 -34 - 1300709 第9 ( a )圖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(b)圖是第9(a)圖之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 ( a )圖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Π ( b )圖是顯示第11 ( a )圖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 ( a )圖是對應於第丨丨（a )圖之線圖。 第1 2 ( b )圖是對應於第1 1 ( b )圖之線圖。 第1 2 ( c )圖是顯示第1 1 ( a )圖之假牙附件的平面加 工後之全體構造剖面圖。 第1 3 ( a )圖是顯示實施例3的假牙附件之左側熔接部 附近的熔接後狀態之剖面部分的照片。 第1 3 ( b )圖是顯示實施例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 ( a )圖是對應於第1 3 ( a )圖之線圖。 第1 4 ( b )圖是對應於第1 3 ( b )圖之線圖。 第1 4 ( c )圖是顯示第1 3 ( a )圖之假牙附件的熔接後 狀態之全體構造剖面圖。 第1 5圖是顯示無點熔接部下全周圍熔接杯狀環口及密 封狀板時密封板之傾斜的槪略剖面圖。 -35- 1300709 第1 6圖是顯示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。 第19圖是第18圖之領域A的放大圖。 第20圖是對應於第19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22圖是對應於第2 1圖之顯微鏡照片的槪略圖。 第23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圖是顯示將具有假牙附件之假牙在埋設於牙槽的 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 2 ' 62、72、402…永久磁鐵 -36- 1300709 3、23 、53、 103 、5 13…密封板 3 a …壓緊構件 3b …雷射照射裝 置 4、24 、44、 54、 64 、 214 、 304 、514…板狀: 5、25 、35、 45、 55 、 65 、 215 、 305 、 415 、 6、6a〜6d、 26e〜261、 36e〜361、 46a〜46d 7 …全周圍熔接 部 21a > 31a …第一對接部 24a、 34a …第二對接部 27a、 37a …第一全周圍 熔接部 27b、 37b …第二全周圍 熔接部 3 6m …重疊部分 54b …Ni電鍍層 61c …擴大直徑部 、凹部 61d …段差 90 、 400 、 500 …假牙附件 92 …支撐構件 93 …吸盤 94 …接合器 95 …數位壓力計 96 …微動裝置 97 …試驗台 201b、 * 301b 、305b···毛邊 201r、 201R …外周圍 414 …密封圓板 -37- 1300709Table 3 Example No. x (//m) Point welding burr cup-shaped ring mouth outer diameter sealing plate protrusion amount t (mm) Magnetic attraction force (N) Error (_ reduction amount ζ (1) (μπι) Example 1 30 Yes or no 2 12 0 6.38 Example 2 30 yfnr Ws 2 12 0 6.43 Example 3 10 Yes > fl 1 Γ. Heat 2 4 0 6.43 Example 4 20 Yes No 2 8 0 6.43 Example 5 40 with /frrr Heat 2 16 0 6.43 Example 6 50 Yes > fnr. 4 20 0 6.43 Example 7 30 Yes No 2 12 0 6.33 Example 8 30 Yes Μ j\\\ 2 12 0 6.33 Example 9 30 with jfrrt IMI 2 12 0 6.43 Example 10 30 with dnt, 2 12 0 6.62 Example 11 10 with 4τττ j\\\ 2 4 0 6.62 Example 12 20 with Αλ π* 2 8 0 6.62 Example 13 40 with M 2 16 0 6.62 Implementation Example 14 50 has ^frnr no 4 20 0 6.62 Example 15 30 with dnt 2 12 0 6.62 Comparative Example 1 30 None > fnr M > 0.2 Comparative Example 2 30 >frrr dnt > 0.2 Comparative Example 3 0 fnr It It J \ w has 35 -20 0 6.23 Comparative Example 4 0 M ^\\\ Yes 35 -20 0 6.08 Comparative Example 5 0 Yes 35 -20 0 6.23 Comparative Example 有 70 ^rrr 10 0 6.33 Note: (1) To increase the cup ring The diameter was used as a minus 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% salt of 37 ° C for 3 days. Visually observe the rust condition of the welded portion, and at the same time analyze the saline to confirm whether the magnet is uranized. The result is shown in Table 4. -32- 1300709 Table 4 Example No. Rusty salt water Analysis Results Example 1 ΕΕ J J \ All Nd was not detected Example 8 Μ J\\\ All Nd was not detected Comparative Example 1 All detected Nd Comparative Example 3 All detected Nd • According to the above results, Examples 1 and 3 of the denture attachments of Examples 1 and 8 which were subjected to spot fusion before total-welding, and which were not immersed in the concave portion of the cup-shaped ring and the mouth were welded without full-point welding. The denture attachment, the saline solution is immersed in the recess of the cup-shaped ring mouth. According to the present invention, the sealing plate is slowly inserted into the opening of the concave portion of the cup-shaped ring opening, and the sealing plate and the cup-shaped ring opening are temporarily fixed by spot welding, and then the entire circumference is welded, so that the surface of the sealing plate does not It is inclined to be substantially welded in parallel with the surface of the cup-shaped ring mouth, and the welded portion of the cup-shaped ring mouth and the sealing plate substantially forms a uniform stable quality across the entire circumference of the shape, the amount of melting, and the depth of fusion of the molten portion. Therefore, after the surface of the welded surface is machined, the welded portion is made shallow, or a through hole is formed to prevent the sealing property from being lowered. Therefore, the denture attachment of the present invention has a reduced diameter appearance in the vicinity of the open end of the cup-shaped ring opening, thereby improving the magnetic attraction force, making the uranium resistance good and durable, and being compact and thin at a low price. Chemical. 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 cross-sectional view showing the state in which the full circumference of the denture attachment of Fig. 1(a) is connected to -33 - 1300709. Fig. 1(c) is a cross-sectional view showing the state after the entire circumference of the denture attachment of Fig. 1(a) is welded. Fig. 1 (d) is a cross-sectional view of A - 0 - A of Fig. 1 (a) (showing the state after the planar processing of the denture attachment of Example 1.). Fig. 2 is a schematic diagram showing the process for manufacturing the denture attachment of Fig. 1(a) (the graphs on the right side show the A-0-A section on the left side). Fig. 3(a) is a plan view showing the state before the plane of the welded surface of the denture attachment of Fig. 1(a). Figure 3(b) is a cross-sectional view of Α-0-Α in Figure 3(a). Fig. 4(a) is a plan view showing a denture attachment according to a second embodiment of the present invention. Figure 4(b) is a Β-0-Β cross-sectional view of Figure 4(a). Figure 5 is a schematic diagram showing the process used to manufacture the denture attachment of Figure 4 (a) (the figures on the right side show the B-0-B section on the left side). Fig. 6(a) is a plan view showing a denture attachment according to a third embodiment of the present invention. Figure 6(a) is a cross-sectional view taken along line C-0-C of Figure 6(a). Fig. 7 is a schematic diagram showing the process for manufacturing the denture attachment of Fig. 6(a) (the figure on the right side shows the C-0-C section on the left side). Fig. 8(a) is a plan view showing a denture attachment according to a fourth embodiment of the present invention. Figure 8(b) is a cross-sectional view taken along line D-0-D of Figure 8(a). -34 - 1300709 Figure 9 (a) is a plan view showing a denture attachment according to a fifth embodiment of the present invention. Figure 9(b) is a Ε-0-Ε cross-sectional view of Figure 9(a). Fig. 10 is a cross-sectional view showing a dental attachment according to a sixth embodiment of the present invention. Fig. 1 (a) is a photograph showing a cross-sectional portion after planar processing in the vicinity of the left side welded portion of the denture attachment according to the seventh embodiment of the present invention. The second (b) is a photograph showing the cross-sectional portion of the vicinity of the right side weld of the denture attachment of the 11th (a) figure. The 1 2 ( a ) diagram is a line diagram corresponding to the diagram (a ). The 1 2 (b) diagram is a line diagram corresponding to the 1 1 (b) diagram. Fig. 1 2 (c) is a cross-sectional view showing the entire structure after the planar processing of the denture attachment of Fig. 1 (a). Fig. 1(a) is a photograph showing a cross-sectional portion of the state after welding in the vicinity of the left side welded portion of the denture attachment of the third embodiment. Fig. 1 (3) is a photograph showing a cross-sectional portion of the state after welding in the vicinity of the right side welded portion of the denture attachment of the third embodiment. The 14th ( a ) diagram is a line diagram corresponding to the 1 3 ( a ) diagram. Figure 14 (b) is a line graph corresponding to Figure 1 3 (b). Fig. 1 (c) is a cross-sectional view showing the entire structure of the denture attachment of the first 3 (a). Fig. 15 is a schematic cross-sectional view showing the inclination of the sealing plate when the cup-shaped ring mouth and the sealing plate are welded around the entire portion without the spot welding portion. -35- 1300709 Fig. 16 is a partial cross-sectional perspective view showing the denture attachment used to weld the cup ring mouth and the sealing plate over the entire circumference after the opening of the cup ring is pressed into the sealing plate. Fig. 17 is a plan view showing a sample of the denture attachment of Comparative Example 3. Fig. 18 is a plan view showing other samples of the denture attachment of Comparative Example 3. Fig. 19 is an enlarged view of the field A of Fig. 18. Fig. 20 is a photomicrograph corresponding to Fig. 19. Fig. 21 is a photomicrograph showing the embedding portion of the sealing plate of the denture attachment of Comparative Example 5. Figure 22 is a schematic diagram of a microscope photograph corresponding to Figure 21. Figure 23 is a schematic diagram showing the device used to determine the magnetic attraction of the denture attachment. Fig. 24 is a schematic cross-sectional view showing a state in which a denture having a denture attachment is attached to a root panel of the socket and attached to the positioning piece provided. Figure 25 is a schematic cross-sectional view showing a denture attachment of the prior art. Figure 26 is a schematic cross-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-shaped ring mouths 1', 61, ... recesses la, 4a, 21a, 24a... Part 2 '62, 72, 402... permanent magnet - 36 - 1300709 3, 23, 53, 103, 5 13... sealing plate 3 a ... pressing member 3b ... laser irradiation device 4, 24, 44, 54, 64 214, 304, 514... plate shape: 5, 25, 35, 45, 55, 65, 215, 305, 415, 6, 6a to 6d, 26e to 261, 36e to 361, 46a to 46d 7 ... all around the weld 21a > 31a ... first butt joints 24a, 34a ... second butt joints 27a, 37a ... first all-around welds 27b, 37b ... second all-around welds 3 6m ... overlaps 54b ... Ni plating layers 61c ... enlarged Diameter portion, recess 61d ... step 90, 400, 500 ... denture attachment 92 ... support member 93 ... suction cup 94 ... adapter 95 ... digital pressure gauge 96 ... micro-motion device 97 ... test bench 201b, * 301b, 305b · · · flashing 201r , 201R ... Outer circumference 414 ...sealing round plate -37- 1300709

420 421 422420 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-vDob, Dou, Dou’ F, F, P, Q S-S, T-T t u-u v-v

w、W2 X z ' z, δ …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 -38w, W2 X z ' z, δ ... denture bed... socket... root panel... soft magnetic positioning piece... magnet body... field... area... residual flux density... saturation magnetization... outer diameter... magnetic attraction... position... straight line... Protruding amount...vertical line...right end side contour line...width...gap...deformation amount, distance...depth-38

Claims (1)

1300709 第94 1 049 59號「假牙附件及其製法」專利案 (2008年2月25日修正） 十、申請專利範圍· - 1 . 一種假牙附件’其特徵爲具有永久磁鐵、及由具備收納 . 前述永久磁鐵之凹部的耐腐蝕性軟磁性材料而成的杯狀 . 環口、及經嵌入在前述杯狀環口之凹部的開口部之密封 板；前述密封板是由耐腐蝕性軟磁性材料形成之板狀環 口、及由配設在前述板狀環口的外周圍之耐腐蝕性非磁 ^ 性材料形成之密封環所構成，且至少藉由點熔接部和至 少1個的全周圍熔接部，使得前述密封板接合在前述杯 狀環口，藉以密封前述永久磁鐵；其中點熔接部係用來 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，而全周圍熔接部係按照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 接部的方式而形成。 Φ 2 .如申請專利範圍第1項之假牙附件，其中前述杯狀環口 係具有於開口端附近爲經擴大直徑之凹部，而前述密封 板是嵌入在前述杯狀環口的前述擴大直徑部，並至少藉 _ 由點熔接部和至少1個的全周圍熔接部，使得前述密封 . 板接合在前述杯狀環口，藉以在使得前述擴大直徑部及 前述永久磁鐵之間爲設有磁性間隙的狀態下密封前述永 久磁鐵；其中點熔接部係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， 1300709 而全周圍熔接部係按照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 對接部的方式而形成。 3 .如申請專利範圍第2項之假牙附件，其中前述擴大直徑 - 部及則述凹部的段差是2 0〜2 0 0 // m。 - 4 ·如申請專利範圍第1或2項之假牙附件，其中前述點熔 接部係形成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上。 5 ·如申請專利範圍第1〜3項中任一項之假牙附件，其中前 述全周圍熔接部係由以跨越全周圍覆蓋前述杯狀環口和 前述密封環之對接部的方式形成的第一熔接部，及以跨 越全周圍覆蓋前述密封環和前述板狀環口的對接部之方 式形成之第二熔接部所構成。 6 .如申請專利範圍第丨〜3項中任一項之假牙附件，其中前 述全周圍熔接部係以跨越全周圍一體性覆蓋前述杯狀環 > 口和前述密封環之對接部，及前述密封環和前述板狀環 口的對接部之方式所形成。 7 .如申請專利範圍第1〜3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係於接合後再經平面加 3：。 8 . —種假牙附件，其特徵爲具有永久磁鐵、及具備收納前 述永久磁鐵之凹部的耐腐蝕性軟磁性材料而成的杯狀環 口、及經嵌入在前述杯狀環口之凹部的開口部中之密封 -2 - Ϊ300709 板；前述密封板是由耐腐蝕性軟磁性材料形成之板狀環 口、及由配設在前述板狀環口的外周圍之耐腐鈾性非磁 性材料形成之密封環所構成，並至少藉由以覆蓋前述杯 狀環口和前述密封環的對接部及前述密封環和前述板狀 環口之對接部的方式形成之至少1個全周圍熔接部，使 前述密封板接合在前述杯狀環口，藉以密封前述永久磁 鐡，並且在前述杯狀環口之前述開口端附近的領域係經 縮小直徑但實質上寬度不變。 9 . 一種假牙附件，其特徵爲具有永久磁鐵、及由具備收納 前述永久磁鐵且在開口端附近爲經擴大直徑之凹部的耐 腐蝕性軟磁性材料而形成的杯狀環□、及經嵌入在前述 杯狀環口之前述擴大直徑部之密封板；前述密封板是由 耐腐蝕性軟磁性材料形成之板狀環口、及由配設在前述 板狀環口的外周圍之耐腐蝕性非磁性材料形成之密封環 所構成，並藉由以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 、對接部的方式所形成的至少1個全周圍熔接部’使前述 密封板接合在前述杯狀環口，藉以在使得前述擴大直徑 部及前述永久磁鐵之間爲設有磁性間隙的狀態下密封前 述永久磁鐵，並且在前述杯狀環口之前述開口端附近的 領域係經縮小直徑但實質上寬度不變。 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。 -3- 1300709 1 1 · 一種假牙附件的製法，其特徵爲：將永久磁性收納在由 耐腐蝕性軟磁性材料所形成之杯狀環口之凹部，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形成之密封板嵌入在前述杯 狀環口之開口部，至少將前述杯狀環口及前述密封環的 對接部予以點熔接在複數部位，並以覆蓋前述杯狀環口 和前述密封環之對接部及前述密封環和前述板狀環口的 對接部的方式，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，其係以一 次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之方式，前述點熔接。 1 3 .如申請專利範圍第1 1或1 2項之假牙附件的製法，其中 前述全周圍熔接係以跨越全周圍覆蓋前述杯狀環口和前 述密封環之對接部的方式形成第一熔接部，同時以跨越 全周圍覆蓋前述密封環和前述板狀環口的對接部的方式 形成第二熔接部。 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 以跨越全周圍一體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的方式， 進行前述全周圍熔接。 1 5 .如申請專利範圍第1 1或1 2項之假牙附件的製法，其係 在全周圍熔接後，再平面加工前述密封板及前述杯狀環 □。 -4- 1300709 第25圖1300709 No. 94 1 049 59 "Dental attachment and its preparation method" patent case (amended on February 25, 2008) X. Patent application scope - - 1. A denture attachment 'characterized by a permanent magnet and provided with a storage. a cup shape of a corrosion-resistant soft magnetic material of a concave portion of the permanent magnet; a ring opening; and a sealing plate embedded in an opening of the concave portion of the cup-shaped ring opening; the sealing plate is made of a corrosion-resistant soft magnetic material a plate-shaped annular opening formed and a sealing ring formed of a corrosion-resistant non-magnetic material disposed on an outer periphery of the plate-shaped annular opening, and at least by a spot welded portion and at least one full circumference a welding portion, wherein the sealing plate is joined to the cup-shaped ring opening, thereby sealing the permanent magnet; wherein the spot welding portion is used for fixing the spot-welding portion of the plurality of portions of the abutting portion of the cup-shaped ring opening and the sealing ring, and The all-around welded portion is formed to cover the abutting portion of the cup-shaped ring opening and the seal ring, and the abutting portion of the seal ring and the plate-like ring opening. Φ 2. The denture attachment according to claim 1, wherein the cup-shaped ring mouth has a concave portion having an enlarged diameter near the open end, and the sealing plate is embedded in the enlarged diameter portion of the cup-shaped ring opening. And at least borrowing from the spot welding portion and the at least one full-circumferential welding portion, so that the sealing plate is joined to the cup-shaped ring opening, so that a magnetic gap is provided between the enlarged diameter portion and the permanent magnet The permanent magnet is sealed in a state in which the spot welding portion is used to fix the point-welding portion of the enlarged diameter portion of the cup-shaped ring opening and the plurality of portions of the abutting portion of the sealing ring, 1300709, and the entire surrounding welding portion is covered by the foregoing The enlarged diameter portion of the cup-shaped ring mouth and the abutting portion of the seal ring and the abutting portion of the seal ring and the plate-shaped ring port are formed. 3. The denture attachment according to item 2 of the patent application, wherein the step of expanding the diameter - the portion and the recess portion is 2 0 to 2 0 0 // m. The denture attachment according to claim 1 or 2, wherein the point fusion portion is formed at an abutting portion of the cup ring mouth and the seal ring, and abutment between the seal ring and the plate ring ring Ministry. The denture attachment according to any one of claims 1 to 3, wherein the all-around welded portion is formed by a method of covering the abutting portion of the cup-shaped ring opening and the sealing ring across the entire circumference. The welded portion is configured by a second welded portion formed to cover the abutting portion of the seal ring and the plate-shaped ring opening across the entire circumference. 6. The denture attachment according to any one of claims 1-3, wherein the all-around welded portion covers the abutting portion of the cup ring & the sealing ring integrally across the entire circumference, and the aforementioned The sealing ring is formed in the manner of the abutting portion of the aforementioned plate-like ring opening. The denture attachment according to any one of claims 1 to 3, wherein the surface of the sealing plate and the cup-shaped ring mouth are joined to each other by a plane after joining. 8. A denture attachment characterized by having a permanent magnet, a cup-shaped ring opening having a corrosion-resistant soft magnetic material that houses the concave portion of the permanent magnet, and an opening that is fitted into the concave portion of the cup-shaped ring opening The seal-2 - Ϊ300709 plate in the middle; the seal plate is a plate-shaped ring mouth formed of a corrosion-resistant soft magnetic material, and a uranium-resistant non-magnetic material formed by the outer periphery of the plate-shaped ring mouth And a sealing ring formed by at least one full-circumferential welding portion formed to cover at least the abutting portion of the cup-shaped ring opening and the sealing ring and the abutting portion of the sealing ring and the plate-shaped ring opening; The sealing plate is joined to the cup-shaped annular opening to seal the permanent magnetic ridge, and the field near the open end of the cup-shaped annular opening is reduced in diameter but substantially constant in width. A denture attachment comprising a permanent magnet and a cup-shaped ring formed of a corrosion-resistant soft magnetic material having a concave portion that accommodates the permanent magnet and has an enlarged diameter near an open end, and is embedded in a sealing plate of the enlarged diameter portion of the cup-shaped ring opening; the sealing plate is a plate-shaped ring opening formed of a corrosion-resistant soft magnetic material, and the corrosion resistance of the outer periphery of the plate-shaped ring opening is not a sealing ring formed of a magnetic material, and formed by covering the abutting portion of the enlarged diameter portion and the sealing ring of the cup-shaped ring opening and the abutting portion of the sealing ring and the plate-shaped ring opening At least one full-circumferential welded portion ′ connects the sealing plate to the cup-shaped ring opening, thereby sealing the permanent magnet in a state in which a magnetic gap is provided between the enlarged diameter portion and the permanent magnet, and in the cup The area near the aforementioned open end of the ring mouth is reduced in diameter but substantially constant in width. The denture attachment according to claim 9, wherein the step of the enlarged diameter portion and the recessed portion is 20 to 200 / / m. -3- 1300709 1 1 · A method for manufacturing a denture attachment, characterized in that permanent magnetism is accommodated in a concave portion of a cup-shaped ring opening formed of a corrosion-resistant soft magnetic material, and a plate shape of a corrosion-resistant soft magnetic material is used. a sealing plate formed by a ring of a ring and a corrosion-resistant non-magnetic material disposed around the ring is embedded in the opening of the cup-shaped ring opening, and at least the abutting portion of the cup ring and the sealing ring is spot-welded The cup-shaped ring opening and the sealing plate are welded to the entire circumference so as to cover the abutting portion of the cup-shaped ring opening and the sealing ring and the abutting portion of the sealing ring and the plate-like ring opening at a plurality of portions. 1 2 . The method of manufacturing a denture attachment according to claim 11 , wherein the abutting portion of the cup ring mouth and the sealing ring and the abutting portion of the sealing ring and the plate ring ring are fixed at a time, The aforementioned points are welded. The method of manufacturing a denture attachment according to claim 1 or claim 2, wherein the all-around welding system forms the first fusion joint in such a manner as to cover the abutting portion of the cup-shaped ring opening and the sealing ring across the entire circumference. At the same time, the second welded portion is formed in such a manner as to cover the abutting portion of the aforementioned seal ring and the aforementioned plate-like ring opening across the entire circumference. 1 . The method of claim 1 , wherein the abutting portion of the cup ring ring and the sealing ring, and the sealing ring and the plate ring ring are integrally covered across the entire circumference. In the manner of the butt joint, the aforementioned all-around welding is performed. 1 5 . The method of manufacturing a denture attachment according to claim 1 or 12, wherein the sealing plate and the cup ring are planarly machined after being welded all around. -4- 1300709 Figure 25 413 414 415 402413 414 415 402 400 401 第26圖400 401 Figure 26 504 505 1300709 七、指定代表圖： (一） 本案指定代表圖為：第（la )圖。 (二) 本代表圖之元件符號簡單說明： 1 …杯狀環口 4 …板狀環口 6a〜6d…點熔接部 7 …全周圍熔接部 A …領域 I Ο ...中心點504 505 1300709 VII. Designated representative map: (1) The representative representative of the case is: (la). (2) The symbol of the symbol of this representative figure is simple: 1 ... cup ring mouth 4 ... plate ring mouth 6a ~ 6d ... point welding part 7 ... all around welding part A ... field I Ο ... center point 八、本案若有化學式時，請揭示最能顯示發明特徵的化學式： 無〇 -4-8. If there is a chemical formula in this case, please reveal the chemical formula that best shows the characteristics of the invention: No 〇 -4-
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JP5195285B2 (en) 2007-11-01 2013-05-08 日立金属株式会社 Implant keeper and assembly thereof
US8951044B2 (en) 2011-05-25 2015-02-10 Hitachi Metals, Ltd. Keeper for implant and its assembly, and keeper-fixing method
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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