554112 A7 B7 五、發明説明（1) <產業上之利用領域> 本發明係關於具有可調節線之張力的線張力調節機構 之縫紉機者。 <先行技術> 已往所提供之縫紉機，係具有由2個一組之線張力調 節用圓盤，和備有將一方之線張力調節圓盤有效地以彈簧 力推向他方之線張力調節圓盤用之線張力調節彈簧之線張 力調節機構者（特許出願公告昭和6 〇 一 2 7 3 1 0號公 報）。該線張力調節機構，乃如於第1 2圖所示，具有2 個一組之線張力調節用圓盤1 〇 1 ，1 〇 2，和施加能將 一方之線張力調節用圓盤1 0 1推-向他方之線張力調節用 圓盤1 0 2之彈簧力的螺旋狀線張力調節用彈簧2 0 0。 在縫紉機之內部，具有斜盤凸輪3 0 1之筒體3 0 0和線 張力調節用彈簧2 0 0係以相當遠的距離分開。因此之故 ，係作成：藉使具有斜盤凸輪3 0 1之筒體3 0 〇朝其軸 長方向移動，以筒體3 0 0之斜盤凸輪3 0 1將截面呈圓 形之較長桿4 0 0之一端部4 0 0 a予以推壓，讓較長桿 4 0 0沿其長度方向（如箭頭XI ，X2所示方向）移動 ，以較長桿4 0 0之他端部4 0 0 a推壓螺旋狀之線張力 調節彈簧2 0 0 ，藉此調節線張力用彈簧2 0 0之彈簧力 ，用以調節藉2個一組之線張力調節圓盤1 0 1 ’ 1 〇 2 保持線之力道，進而調節在縫製之際的線之張力。 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X 297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -4- 554112 A7 B7 五、發明説明（2) <發明所欲解決之課題>554112 A7 B7 V. Description of the invention (1) < Application field in the industry > The present invention relates to a sewing machine having a thread tension adjusting mechanism capable of adjusting the tension of the thread. < Leading technology > Previously provided sewing machines have two sets of thread tension adjusting discs, and are equipped with thread tension adjustment discs that effectively push one of the thread tension adjusting discs to the other with spring force A wire tension adjusting mechanism for a wire tension adjusting spring for a disc (Chartered Volunteer Announcement No. Showa 6027 2710). This thread tension adjusting mechanism has two sets of thread tension adjusting discs 1 0, 1 and 2 as shown in FIG. 12 and a thread tension adjusting disc 1 0 1 Push-Spiral wire tension adjustment spring 2 0 0 of the spring force of the disk tension adjusting disk 1 2 of the other side. Inside the sewing machine, a cylinder 3 0 with a swash plate cam 3 0 1 and a thread tension adjusting spring 2 0 0 are separated by a considerable distance. For this reason, it is made: if the cylinder 30 with a swash plate cam 3 0 1 is moved in the direction of its axial length, the cross section of the cylinder with a swash plate cam 3 0 1 of the cylinder 3 0 will be round and longer. Push one end 4 0 0 a of the rod 4 0 0 to move the longer rod 4 0 0 along its length (as indicated by arrow XI, X2), and use the other end 4 of the longer rod 4 0 0 0 0 a Press the helical wire tension adjusting spring 2 0 0 to adjust the wire tension using the spring force of the spring 2 0 0 to adjust the wire tension adjusting disc 1 2 0 1 '1 〇 2 While maintaining the strength of the thread, adjust the tension of the thread during sewing. This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) (Please read the precautions on the back before filling this page) Order printed by the Intellectual Property Bureau of the Ministry of Economic Affairs Consumer Cooperatives -4- 554112 A7 B7 V. Description of the invention (2) < Problem to be solved by the invention >
於線張力調節機構中，爲能以良好的精度調節線的張 力，宜能以良好的精度調節呈螺旋狀之線張力調節用彈簧 2 0 0之彈簧力的強弱爲理想者。不過，若按照與前述公 報有關之線張力調節機構時，係作成藉筒體3 0 0之斜盤 凸輪3 0 1使較長桿4 0 0朝其較長方向（如箭頭所示X 1 ，X 2方向）移動，俾調節螺旋狀之線張力調節用彈簧 2 0 0之彈簧力者。而如於第1 2圖所示，筒體3 〇 〇之 斜盤凸輪3 0 1和線張力調節用彈簧2 0 0雙方之間有--段相當長之分開距離。因此當欲將斜盤凸輪3 0 1之作用 力傳達給線張力調節用彈簧2 0 0的時候，有必要使用長 度長之較長桿4 0 0。在此種情形下，爲輕量化把較長桿 4 0 0之直徑作細時，往往會產生較長桿4 0 0之彎曲。 特別是，當將筒體3 0 0之斜盤凸輪3 0 1往下方移動， 使其推壓較長桿4 0 0時，由於在較長桿4 0 0之一端部 4 0 1 a上，受到使較長桿4 0 0朝其軸直角方向之作用 力，故容易使較長桿4 0 0產生彎曲。如前所述，當斜盤 凸輪3 0 1和線張力調節用彈簧2 0 〇以相當的距離分開 時，對欲以良好的精度將斜盤凸輪3 0 1之作用力傳達給 螺旋狀之線張力調節用彈簧2 0 0之事未必有充分的條件 。因此之故，對以良好的精度調節線張力調節用彈簧 2 0 0之彈簧力的強弱事，自有其限制存在，進而，對欲 以良好的精度實施線張力之微調亦有其界限。若欲抑止較 長桿4 0 0之彎曲，雖以加粗較長桿4 〇 〇之直徑可獲解 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁)In the thread tension adjusting mechanism, in order to adjust the tension of the thread with good accuracy, it is desirable to be able to adjust the strength of the spring force of the spiral wire tension adjusting spring 2000 with good accuracy. However, if the thread tension adjusting mechanism related to the aforementioned publication is used, the swash plate cam 3 0 1 of the cylinder 3 0 is made to make the longer lever 4 0 0 in its longer direction (as shown by the arrow X 1, X 2 direction) move, 俾 adjust the spring force of the spiral wire tension adjustment spring 2 0 0. As shown in Fig. 12, there is a relatively long separation distance between the swash plate cam 301 of the cylinder 300 and the spring 200 for adjusting the thread tension. Therefore, when the force of the swash plate cam 3 0 1 is to be transmitted to the wire tension adjustment spring 2 0 0, it is necessary to use a longer rod 4 0 0. In this case, when the diameter of the longer rod 400 is made thin for weight reduction, the bend of the longer rod 400 often occurs. In particular, when the swash plate cam 3 0 1 of the cylinder 3 0 0 is moved downward to push the long rod 4 0 0, since it is on one end portion 4 0 1 a of the long rod 4 0 0 0, Due to the force that causes the longer rod 400 to be perpendicular to its axis, it is easy to bend the longer rod 400. As described above, when the swash plate cam 3 0 1 and the wire tension adjusting spring 2 0 0 are separated by a considerable distance, it is necessary to transmit the force of the swash plate cam 3 0 1 to the spiral line with good accuracy. The tension adjustment spring 2 0 may not be sufficient. For this reason, there is a limit to adjusting the spring force of the spring 200 for adjusting the thread tension with good accuracy, and further, there is a limit to fine adjustment of the thread tension with good accuracy. If you want to suppress the bending of the longer rod 400, you can get the thickness of the longer rod 400. This paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the back (Please fill in this page again)
1T 經濟部智慧財產局員工消費合作社印製 -5- 554112 A7 B7 五、發明説明（3) 決，惟此舉將增加其重量爲其弊也。 (請先閱讀背面之注意事項再填寫本頁) 本發明係鑑於前述之實情所作，並以提供一種縫紉機 ’特別是以提供具有：儘量使斜盤凸輪和線張力調節用彈 簧之位置靠近，藉此能不使用較長桿，對以良好的精度調 節線張力調節用彈簧之彈簧力的強弱有利，進而對以良好 的精度調節線之張力有利之線張力調節機構，之縫紉機爲 課題者。 <用以解決課題之手段> 本發明有關之縫紉機，係屬於具有由2個一組之線張 力調節圓盤；和 由可施加將一方之線張力調節圓盤推抵於他方之線張 力調節圓盤之彈簧力的線張力調節用彈簧所組成之線張力 調節機構之形態之縫紉機，其特徵爲： 該線張力調節機構，備置：底座部；和 按照可沿將線張力調節用彈簧之彈簧力調強或是調弱 之方向移動之方式設於底座部之動作部；和 經濟部智慧財產局員工消費合作社印製 在背向於線張力調節用彈簧之位置設於動作部之斜盤 凸輪；和 具有沿與線張力調節用彈簧之彈簧力作用方向交差之 方向可對斜盤凸輪作前進方向及後退方向之移動的方式設 置之凸輪推壓部的凸輪連桿；和 可直接或是間接地使凸輪連桿產生動作之操作部，並 且 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -6- 554112 A7 B7 五、發明説明（4) (請先閲讀背面之注意事項再填寫本頁) 可隨伴凸輪連桿所屬凸輪推壓部對斜盤凸輪所作朝前 進方向及後退方向之移動中之一方的移動，將動作部與斜 盤凸輪一起朝增強線張力調節用彈簧之彈簧力的方向移動 ;復又 可隨伴凸輪連桿所屬凸輪推壓部對斜盤凸輪所作朝前 進方向及後退方向之移動中之他方的移動，將動作部與斜 盤凸輪一起朝減弱線張力調節用彈簧之彈簧力的方向移動 〇 按照本發明有關之縫紉機時，即能藉將凸輪連桿之凸 輪推壓部對斜盤凸輪作前進或後退，將線張力調節彈簧之 彈簧力的強弱予以調節之。按照本發明有關之縫紉機時， 由於在作用部之與線張力調節用彈簧背向的位置處設置斜 盤凸輪之故，斜盤凸輪靠近線張力調節用彈簧，由是與前 述之已往技術不同而不必使用其長度較長且易於彎曲之較 長桿亦可。 <實施例> 經濟部智慧財產局員工消費合作社印製 茲先就本發明之實施之形態而言，如按本發明有關之 縫紉機時，得能採用次述中之至少一種之形態。即： •線張力調節機構具有：可將線張力調節用彈簧之彈 簧力相對地予以調粗之粗調節操作部；和可將線張力調節 用彈簧之彈簧力較粗調節操作部相對地予以調細之細調節 操作部’且操作部得能採用屬於細調節操作部之形態者。 這種情形，即有利於將線張力調節用彈簧之彈簧力作微細 本紙張尺度適用中國國家標準（CNS ) A4規格（210X：297公釐） 554112 A7 B7 i、發明説明（5) 程度的調節者。 (請先閲讀背面之注意事項再填寫本頁) •底座部，面對斜盤凸輪之位置處備置凸輪限制部， 得能採用使凸輪連桿所屬推壓部對凸輪限制部和斜盤凸輪 之間所存之空間作前進及後退之形態。由於以面對斜盤凸 輪般地設置凸輪限制部之故，有利於將凸輪連桿所屬推壓 部對凸輪限制部和斜盤凸輪間所存之空間作前進及後退之 動作。凸輪連桿宜以沿垂直方向移動爲理想。在此情形下 ，當欲增強線張力調節用彈簧之彈簧力之際，得能採用使 凸輪連桿沿垂直方向作自下往上之移動的形態。 •斜盤凸輪係設於和線張力調節用彈簧相背向之位置 處。所謂相背向之意即指朝以背對背之方向者。此時，斜 盤凸輪可直接與線張力調節用彈簧相背向。或是斜盤凸輪 係以和線張力調節用彈簧夾住別的配件般的與線張力調節 用彈簧相背向亦屬可行。 經濟部智慧財產局員工消費合作社印製 •線張力調節機構之操作部，係兼作調節每一針之針 腳長度之縫法調節部之用，故得能採用按照每一針之針腳 之長度的調節將線張力調節用彈簧之彈簧力予以調節之形 態。此時候，按照每一斜之針腳的長度可調節線張力調節 用彈賛之彈賛力。例如’當每一*針之針腳的長度爲長者時 ，相對地使線張力調節用彈簧之彈簧力增大’而當每一針 之針腳的長度爲短者時，則可相對地調節線張力調節用彈 簧之彈簧力減小者。且視情況如何，亦可調整爲當每一針 之針腳的長度較長時相對地減小線張力調節用彈簧之彈簧 力，而當每一針之針腳的長度較短時相對地增大線張力調 -8- 本紙張尺度適用中國國家標隼（CNS ) Α4規格（210Χ297公羡） 554112 A7 B7 五、發明説明（6) 節用彈簧之彈簧力。 (請先閲讀背面之注意事項再填寫本頁) •於操作部和凸輪連桿之間，得能採用設有可將操作 部之操作傳達給凸輪連桿之擺動連桿機構之形態者。在此 情形下，有利於按照縫紉機之內部構造設定操作部之位置 。擺動連桿機構係具有藉操作部之操作所擺動之第1連桿 ;和連接第1連桿與凸輪連桿之可擺動的第2連桿’且凸 輪連桿可採用沿著垂直方向移動之形態。又凸輪連桿’第 1連桿、第2連桿係異於截面呈圓形之較長桿，乃由板料 所形成之故，有利於達成一面確保剛性而謀求輕量化之目 的。 經濟部智慧財產局員工消費合作社印製 •擺動連桿機構具有可調節第1連桿之擺動中心域高 低之調節時，俾能夠採用隨著藉調節部調節擺動中心域之 高度而調節凸輪連桿所屬凸輪推壓部對斜盤凸輪之前進方 向及後退方向的移動量之形態者。如此地藉由調節部調節 第1連桿之擺動中心域之高度時’將如後所述，可調節凸 輪連桿所屬凸輪推壓部對斜盤凸輪之前進方向及後退方向 之移動量，藉以調節線張力調節用彈簧之彈簧力’進而可 調節線之張力也。 •擺動連桿機構之調節部，係具備··以轉動自如方式 裝在固定托架上之裝設孔內的第1軸；和 •連設於第1軸且具有對第1軸之第1中心軸芯偏心 之第2中心軸芯，復以轉動自如方式裝在第1連桿上之穿 通孔內的第2軸， 是以可採用藉第2軸對第1軸之第1中心軸芯之轉動 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公嫠） -9 - 554112 A7 B7 五、發明説明（7) (請先閲讀背面之注意事項再填寫本頁) 移位來調節第1連桿之擺動中心域之高度的形態者。若按 此情形調節第1連桿之擺動中心域高度時，將有利於調節 凸輪連桿所屬凸輪推壓部對斜盤凸輪之往前進方向及後退 方向的移動量，於是乎，有利於調節線張力調節用彈簧， 俾調節線之張力。 繼而，依照所附第1〜1 1圖將本發明有關之縫紉機 之實施例予以說明。 經濟部智慧財產局員工消費合作社印製 第1圖表示線張力調節機構附近之正面圖，第2圖係 線張力調節機構附近之俯視平面圖，第3圖表示裝上封裝 外板狀態下之線張力調節機構附近正面圖，第4圖表示線 張力調節機構附近主要部之分解圖。如於第1圖所示，裝 設在縫紉機發揮作爲固定部之功能的線張力調節托架1上 ，設有供調節線（上線）張力用之線張力調節機構2。線 張力調節機構2，具有用以夾持線之2個一組的線張力調 節圓盤3 a ，3 b ;和可使一方之線張力調節圓盤3 a沿 箭頭所示A 1方向彈性推壓他方之線張力調節圓盤3 b之 線張力調節用彈簧4。如於第1圖所示，線張力調節機構 2，係備置：被作爲固定部之線張力調節托架1所支持之 底座部5 ，和被底座部5所支持之動作部6 ;和設於動作 部6之斜盤凸輪7 ;和凸輪連桿8，和使凸輪連桿8產生 動作之擺動連桿機構9。當線張力調節用彈簧4之彈簧力 量增大時，線之張力加強。當線張力調節用彈簧4之彈簧 力量減小時，線之張力減弱。 如第1圖所示，底座5係依照沿使線張力調節用彈簧 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -10- 554112 A7 B7 五、發明説明（8) 4之彈簧力增強或是減弱之方向（如箭頭A 1 ，A 2所示 方向）可以移動之方式被線張力調節托架1所支持。該底 座5復具有在與斜盤凸輪7面對之位置處所設突起狀之凸 輪限制部1 0，和凸輪銷2 5。 動作部6係嵌裝於底座部5上，並以沿使線張力調節 用彈簧4之彈簧力增減之方向（如箭頭A 1 ，A 2所指方 向）可以對底座5移動之方式設置。一方之線張力調節圓 盤3 a ，係被固定於線張力調節軸1 2之前端部。他方之 線張力調節圓盤3 b，乃以面對一方之線張力調節圓盤3 a 般地被固定在線張力調節托架1所屬之固定板部1 X上。 於線張力調節軸1 2外周側，有經藉調節螺栓1 3所支持 之螺旋狀線張力調節用彈簧4。從第4圖可明瞭，於底座 部5沿線張力調節用彈簧4之彈簧力作用方向形成有滑動 槽5 e ，並有動作部6之突出部6 e依照可滑動方式嵌裝 在該滑動槽5 e內。藉此，動作部6對底座部5即可沿線 張力調節用彈簧4之彈簧力作用方向（如箭頭A 1 ，A 2 所指方向）移動。於動作部6設有2個斜盤凸輪7。斜盤 凸輪7之凸輪面7 a係呈直線狀依照越往下方越遠離底座 部5之方向傾斜者。 如第4圖所示，凸輪推壓部1 ^係以2個互相面對般 的並設於凸輪連桿8上，且分別與各斜盤凸輪7卡合。凸 輪連桿8係用以金屬和硬質樹脂等硬質材料形成之板料所 構成，而凸輪連桿8之厚度方向，即箭頭TA所指方向’ 則與線張力調節用彈簧4之彈簧力作用方向（箭頭A 1 ’ 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁) 1r— 經濟部智慧財產局員工消費合作社印製 -11 - 554112 A7 B7 五、發明説明（9) (請先閲讀背面之注意事項再填寫本頁) A 2所指方向）交差之。又，沿凸輪連桿8表面之方向， 即箭頭T B所指方向則沿著線張力調節用彈簧4之彈簧力 作用方向（箭頭A 1 ，A 2所指方向）。凸輪連桿8，即 使其厚度不薄的時候，對沿凸輪連桿8表面之方向，即朝 箭頭T B所指方向作用之外力仍具有高的剛性。對將於後 述之第1連桿2 8，第2連桿2 9來說亦屬同樣的情形者 〇 如於第4圖所示，調節螺栓1 3之陽螺紋1 3 a ，係 依進退自如方式與動作部6之陰螺紋6 a嚙合。線張力調 節用彈簧4之彈簧力量，雖然可藉由前述調節螺栓1 3之 旋進退予以調節，惟於縫紉機通常之使用狀態下其調節螺 栓1 3係被封裝外板1 8所遮蔽故，一旦調節過後，於日 常使用縫紉機時並不經常進行調節者。於日常性縫紉機之 使用時，則如將後述係經由線張力調節用轉盤1 9及縫法 調節轉盤2 0調節線張力調節用彈簧4之彈簧力量。 經濟部智慧財產局員工消費合作社印製 如第1圖所示，斜盤凸輪7，係以作爲另外配件用之 調節螺栓1 3介於中間而設在背向線張力調節用彈簧4之 位置。當於線張力調節用彈簧4係裝配在線張力調節圓盤 3 a ，3 b和斜盤凸輪7間之狀態下，設線張力調節用彈 簧4之最大彈簧長度爲L時，斜盤凸輪7，凸輪連桿8之 中心線P Μ即位於從線張力調節用彈簧4之一端部4 a起 算（4xL)以內之範圍。 如第1圖所示，凸輪連桿8係沿垂直線所配置，並且 可沿該垂直線移動者。在屬於凸輪連桿8上端部之前端部 本紙張尺度適用中國國家標隼（CNS ) A4規格（210X297公釐） -12- 554112 經濟部智慧財產局員工消費合作社印製 A7 B7五、發明説明（1() 處，設有凸輪推壓部1 4。凸輪推壓部1 4，具有爲減低_ 斜盤凸輪7及凸輪限制部1 〇之間之摩擦阻抗用之圓弧突 出i 1 4 a ，且可沿與線張力調節用彈簧4之彈簧力作用 方向（如箭頭A 1 ，A2所指方向）交差之方向（如箭頭 Y 1 ，Y 2所指方向）移動。藉此，凸輪連f旱8即依與凸 輪推壓部1 4 一起對朝斜盤凸輪7前進之方向（上方向即 如箭頭Y 1所指方向）及後退之方向（下方向即如箭頭Y 2所指方向）可移動的方式設置者。即凸輪連桿8之凸輪 推壓部1 4朝設於底座部5之凸輪限制部1 〇和斜盤凸輪 7之間的空間作前進（朝上方向即如箭頭Y 1所指方向） 及後退（朝下方向即如箭頭Y 2所指方向）之動作。 如第1圖所示，線張力調節機構2 ，係具備：可轉動 之線張力調節轉盤1 9，乃具作爲將線張力調節用彈簧4 之彈簧力量相對地粗調之粗調操作部之功能者；和縫法調_ 節轉盤2 0 ，乃具相對地較作爲線張力調節用彈簧4之彈 簧力粗調操作部之線張力調節轉盤1 9可作更細微調節之 細調操作部之功能者，線張力調節轉盤1 9，係以轉盤軸 2 3介於中間並依照可朝箭頭B 1 ，B 2所示方向自由轉 動之方式設在線張力調節托架1上，且在線張力調節轉盤 1 9裡面具有沿圓弧曲走之淤渦型的第1凸輪槽2 4。當 線張力調節轉盤1 9朝箭頭B 1所指方向被操作轉動時， 由於第1凸輪槽2 4與線張力調節轉盤1 9 一起朝同方向 轉動之故，線張力調節轉盤1 9之第1凸輪槽2 4往同方 向對底座5之凸輪銷2 5作相對性之移動’使底座部5之 ^紙張尺度適用中國國家標準（CNS ) A4規格（21〇Χ：297公釐） ' (請先閱讀背面之注意事項再填寫本頁)Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -5- 554112 A7 B7 V. Description of the Invention (3) However, this will increase its weight as a disadvantage. (Please read the precautions on the back before filling this page) The present invention is made in view of the foregoing facts, and provides a sewing machine '. In particular, it provides: having as close as possible the position of the swash plate cam and the spring for thread tension adjustment, This can eliminate the need for a longer lever, which is advantageous for adjusting the strength of the spring force of the spring for adjusting thread tension with good accuracy, and then for a thread tension adjusting mechanism that is advantageous for adjusting the tension of the thread with good accuracy. < Means for solving the problem > The sewing machine according to the present invention has a thread tension adjusting disc composed of two groups; and a thread tension adjusting disc which can push one of the threads against the thread tension of the other A sewing machine in the form of a thread tension adjustment mechanism composed of a spring for adjusting the spring force of a disc, the thread tension adjustment mechanism is characterized by: the thread tension adjustment mechanism is provided with: a base portion; The spring force is adjusted in the direction of strength or weakness in the action part of the base part; printed with the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economy and printed on the swash plate of the action part at the position facing away from the spring for adjusting the line tension Cam; and a cam link having a cam pressing portion provided in a manner that can move the swash plate cam in the forward and backward directions in a direction that intersects with the direction of the spring force of the wire tension adjusting spring; and can be directly or The operating part that causes the cam link to move indirectly, and this paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) -6-554112 A7 B7 5 Description of the Invention (4) (Please read the precautions on the back before filling in this page) The movement of one of the forward and backward movements of the swash plate cam by the cam pressing part of the accompanying cam link can act The part moves with the swash plate cam in the direction of the spring force of the spring for adjusting the tension of the wire; the other part of the swash plate cam can be moved in the forward direction and the backward direction by the cam pressing part of the cam link. Move and move the action part together with the swash plate cam in the direction of weakening the spring force of the thread tension adjustment spring. When the sewing machine according to the present invention is used, the cam pressing part of the cam link can advance the swash plate cam Or back, adjust the strength of the spring force of the thread tension adjustment spring. In the sewing machine according to the present invention, since the swash plate cam is provided at the position of the acting portion facing away from the spring for adjusting the thread tension, the swash plate cam is close to the spring for adjusting the tension because it is different from the aforementioned conventional technology. It is not necessary to use a long rod which is long and easily bent. < Embodiments > Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs As far as the implementation form of the present invention is concerned, at least one of the following forms may be adopted when the sewing machine according to the present invention is used. That is: • The thread tension adjusting mechanism has: a coarse adjustment operation portion that can relatively adjust the spring force of the spring for adjusting the tension of the wire; and a coarse adjustment operation portion that can relatively adjust the spring force of the spring for adjusting the tension of the wire. The fine adjustment operation portion 'must be in a form that belongs to the fine adjustment operation portion. In this case, it is beneficial to make the spring force of the spring for adjusting the thread tension to be fine. The paper size applies the Chinese National Standard (CNS) A4 specification (210X: 297 mm) 554112 A7 B7 i. Description of the invention (5) Degree regulator . (Please read the precautions on the back before filling in this page) • The base part is equipped with a cam restricting part at a position facing the cam of the swash plate, so that the pressing part of the cam link to the cam restricting part and The space between them is in the form of forward and backward. Since the cam restricting portion is provided so as to face the swash plate cam, it is advantageous to move the pushing portion to which the cam link belongs to the space between the cam restricting portion and the cam of the swash plate to move forward and backward. The cam link should ideally move in the vertical direction. In this case, when it is desired to increase the spring force of the spring for adjusting the thread tension, it is necessary to adopt a form in which the cam link moves vertically from bottom to top. • The swash plate cam is installed at a position facing away from the spring for adjusting the thread tension. The so-called opposite means the person who is facing back to back. In this case, the swash plate cam can be directly opposed to the spring for adjusting the thread tension. Or the swash plate cam is clamped with the spring for adjusting the tension of the wire, and it is also possible to face away from the spring for adjusting the tension of the wire. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs • The operating section of the thread tension adjustment mechanism is also used as a stitch adjustment section that adjusts the stitch length of each stitch, so it can be adjusted according to the stitch length of each stitch Adjust the thread tension with the spring force of the spring. At this time, the thread tension can be adjusted according to the length of each oblique stitch. For example, 'When the length of the stitches of each * stitch is older, the spring force of the thread tension adjustment spring is relatively increased', and when the length of each stitch is shorter, the thread tension may be relatively adjusted The spring force of the adjusting spring is reduced. And depending on the situation, it can also be adjusted to relatively reduce the spring force of the spring for adjusting the thread tension when the length of each stitch is relatively long, and relatively increase the thread when the length of each stitch is relatively short Tension adjustment -8- This paper size is applicable to China National Standard (CNS) A4 specification (210 × 297 public envy) 554112 A7 B7 5. Description of the invention (6) Spring force of section spring. (Please read the precautions on the back before filling out this page.) • Between the operation part and the cam link, a form with a swing link mechanism that can communicate the operation of the operation part to the cam link may be adopted. In this case, it is advantageous to set the position of the operation part according to the internal structure of the sewing machine. The swing link mechanism is provided with a first link that is swung by the operation of the operation portion; and a second swingable link that connects the first link and the cam link, and the cam link can be moved in a vertical direction. form. The first and second cam links are different from long rods with a circular cross-section. They are formed of sheet metal, which is conducive to achieving rigidity and reducing weight. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs • When the swing link mechanism has an adjustable height of the swing center of the first link, the cam link can be adjusted as the height of the swing center is adjusted by the adjustment section The form of the movement amount of the cam pressing part to the forward and backward direction of the swash plate cam. When the height of the swing center of the first link is adjusted by the adjusting portion in this way, the amount of movement of the cam pressing portion to which the cam link belongs to the forward and backward directions of the swash plate cam can be adjusted, as described later, thereby Adjusting the spring force of the spring for adjusting the tension of the thread can further adjust the tension of the thread. • The adjusting part of the swing link mechanism is provided with a first shaft that is rotatably mounted in the mounting hole on the fixed bracket; and a first shaft that is connected to the first shaft and has a first The eccentric second central shaft core is rotatably mounted on the second shaft in the through hole of the first connecting rod. The first central shaft core can be borrowed from the second shaft to the first shaft. The size of this paper is in accordance with Chinese National Standard (CNS) A4 specification (210X297 cm) -9-554112 A7 B7 V. Description of the invention (7) (Please read the precautions on the back before filling this page) Shift to adjust the 1 The shape of the height of the swing center of the link. If the height of the swing center area of the first link is adjusted according to this situation, it will be beneficial to adjust the amount of movement of the cam pressing portion of the cam link to the swash plate cam in the forward direction and the backward direction, so it is beneficial to adjust the line Spring for tension adjustment 俾 Adjust the tension of the thread. Next, an embodiment of the sewing machine according to the present invention will be described in accordance with the attached drawings 1 to 11. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. Figure 1 shows the front view of the vicinity of the thread tension adjustment mechanism. Figure 2 is a top plan view of the vicinity of the thread tension adjustment mechanism. The front view of the vicinity of the adjustment mechanism, and FIG. 4 shows an exploded view of the main part near the thread tension adjustment mechanism. As shown in Fig. 1, the thread tension adjusting bracket 1 which is installed on the sewing machine to function as a fixed portion is provided with a thread tension adjusting mechanism 2 for adjusting the tension of the thread (upper thread). The thread tension adjusting mechanism 2 is provided with two sets of thread tension adjusting disks 3 a and 3 b for holding the thread; and one of the thread tension adjusting disks 3 a can be elastically pushed in the direction of A 1 indicated by the arrow. Press the spring 4 for adjusting the thread tension of the other wire tension disc 3 b. As shown in FIG. 1, the thread tension adjusting mechanism 2 is provided: a base portion 5 supported by the thread tension adjusting bracket 1 as a fixed portion, and an operating portion 6 supported by the base portion 5; and The swash plate cam 7 of the action portion 6; the cam link 8, and the swing link mechanism 9 that causes the cam link 8 to operate. As the spring force of the thread tension adjusting spring 4 increases, the thread tension increases. When the spring force of the thread tension adjusting spring 4 decreases, the thread tension decreases. As shown in Figure 1, the base 5 is in accordance with the spring for adjusting the tension of the thread along the paper. The paper size applies the Chinese National Standard (CNS) A4 (210X297 mm) -10- 554112 A7 B7 V. Description of the invention (8) 4 of The direction in which the spring force increases or decreases (such as the directions shown by arrows A 1 and A 2) can be supported by the thread tension adjusting bracket 1 in a moving manner. The base 5 has a convex-shaped cam restricting portion 10 provided at a position facing the swash plate cam 7, and a cam pin 25. The action portion 6 is embedded in the base portion 5 and can be set to move the base 5 in a direction that increases or decreases the spring force of the wire tension adjusting spring 4 (as indicated by the arrows A 1 and A 2). One of the thread tension adjusting discs 3 a is fixed to the front end of the thread tension adjusting shaft 12. The other thread tension adjusting disc 3 b is fixed on the fixing plate portion 1 X to which the thread tension adjusting bracket 1 belongs so as to face the other thread tension adjusting disc 3 a. On the outer peripheral side of the wire tension adjusting shaft 12, there is a spiral wire tension adjusting spring 4 supported by an adjusting bolt 13. As can be seen from FIG. 4, a sliding groove 5 e is formed in the base portion 5 along the spring force acting direction of the wire tension adjusting spring 4, and a protruding portion 6 e of the action portion 6 is slidably fitted in the sliding groove 5. e Within. Thereby, the action portion 6 can move to the base portion 5 in the direction of the spring force of the wire tension adjusting spring 4 (such as the directions indicated by arrows A 1 and A 2). Two swash plate cams 7 are provided in the operation portion 6. The cam surface 7a of the swash plate cam 7 is linearly inclined in a direction away from the base portion 5 as it goes downward. As shown in FIG. 4, the cam pressing portions 1 ^ are provided on the cam link 8 so as to face each other, and are respectively engaged with the swash plate cams 7. The cam link 8 is made of a sheet made of a hard material such as metal and hard resin, and the thickness direction of the cam link 8, that is, the direction indicated by the arrow TA, is in the direction of the spring force of the wire tension adjustment spring 4. (Arrow A 1 'This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling out this page) 1r—Printed by the Employees ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -11- 554112 A7 B7 V. Description of the invention (9) (Please read the notes on the back before filling in this page) The direction indicated by A 2). Further, the direction along the surface of the cam link 8, that is, the direction indicated by arrow T B is along the direction of the spring force of the wire tension adjusting spring 4 (directions indicated by arrows A 1 and A 2). Even if the cam link 8 is not thin, it has high rigidity against forces acting in the direction along the surface of the cam link 8, i.e., in the direction indicated by arrow T B. The same applies to the first link 28 and the second link 29 which will be described later. As shown in FIG. 4, the male screw 1 3 a of the adjusting bolt 13 can be moved forward and backward freely. The mode is engaged with the female thread 6 a of the action portion 6. Although the spring force of the spring 4 for adjusting the thread tension can be adjusted by the forward and backward adjustment of the adjustment bolt 13, the adjustment bolt 1 3 is shielded by the package outer plate 18 under the normal use of the sewing machine. After adjustment, it is not often adjusted during daily use of the sewing machine. When the sewing machine is in daily use, the spring force of the spring 4 for adjusting the thread tension is adjusted through the turntable 19 for adjusting the tension of the thread and the turntable 20 for adjusting the sewing method as described below. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs As shown in Fig. 1, the swash plate cam 7 is provided with an adjusting bolt 13 as an additional accessory in the middle and is provided at the position of the spring 4 for adjusting the back tension of the wire. When the spring 4 for wire tension adjustment is assembled between the wire tension adjustment disks 3 a, 3 b and the swash plate cam 7, and the maximum spring length of the wire tension adjustment spring 4 is L, the swash plate cam 7, The center line P M of the cam link 8 is within a range (4 × L) from one end 4 a of the wire tension adjusting spring 4. As shown in Fig. 1, the cam link 8 is arranged along a vertical line and can move people along the vertical line. This paper size applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) before the front end that belongs to the upper end of the cam link 8. -12-554112 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 At 1 (), a cam pressing portion 14 is provided. The cam pressing portion 14 has an arc protrusion i 1 4 a for reducing the frictional resistance between the swash plate cam 7 and the cam restricting portion 1 〇, And it can move in a direction (such as the directions indicated by arrows Y 1 and Y 2) that intersects with the direction of the spring force of the spring 4 for adjusting the thread tension (such as the directions indicated by arrows A 1 and A 2). 8 means that it can move in the forward direction (upward direction as indicated by arrow Y 1) and the backward direction (downward direction as indicated by arrow Y 2) together with the cam pressing portion 1 4 That is, the cam pressing portion 14 of the cam link 8 advances toward the space between the cam restricting portion 10 and the swash plate cam 7 provided on the base portion 5 (the upward direction is as indicated by the arrow Y 1). (Refer to the direction) and backward (downward direction is the direction indicated by arrow Y 2). As shown, the thread tension adjusting mechanism 2 is provided with: a rotatable thread tension adjusting dial 19, which functions as a coarse adjustment operation portion that relatively coarsely adjusts the spring force of the thread tension adjusting spring 4; and a seam Method adjustment_ Turntable 20, which has a function of relatively thinner than the spring force of the spring tension adjustment spring 4, which is a coarse adjustment operation part of the thread adjustment dial 19, which can be used for more fine adjustment of the function of the fine adjustment operation part, thread tension The adjusting turntable 19 is set on the line tension adjusting bracket 1 with the turntable shaft 2 3 in the middle and freely rotating in the directions shown by the arrows B 1 and B 2. The first cam groove 2 4 of the volute type with a circular arc. When the thread tension adjusting dial 1 9 is operated in the direction indicated by the arrow B 1, the first cam groove 2 4 and the thread tension adjusting dial 1 9 For the reason of turning in the same direction, the first cam groove 24 of the thread tension adjusting dial 19 is moved relative to the cam pin 25 of the base 5 in the same direction. CNS) A4 specification (21〇 ×: 297mm) '' (please first Note Complete this page and then read it back)
-13- 554112 A7 B7 五、發明説明（ 凸輪銷2 5相對性地到達第1凸輪槽2 4之凸輪位置 2 4 r 。當底座部5之凸輪銷2 5如此相對性地到第i凸 輪槽2 4之凸輪位置2 4 r時，底座部5即與凸輪銷2 $ 一起連同動作部6及斜盤凸輪7在內朝著對固定托架4 〇 往線張力調節用彈簧4之方向，即朝箭頭a1所示之方向移 動，而調節線張力調節用彈簧4增強其彈簧力。與這相雙寸 的，當線張力調節轉盤1 9朝相反方向的箭頭B 2所示方 向被轉動操作時，由於第1凸輪槽2 4與線張力調節轉盤 1 9 一起轉動，故線張力調節轉盤1 9之，第1凸輪槽2 4 將朝相同方向對底座部5之凸輪銷2 5作相對性的移動， 使底座部5之凸輪銷2 5相對地到達第1凸輪槽2 4之凸 輪位置2 4 s。當凸輪銷2 5這樣的相對性地到達第1凸 輪槽2 4之凸輪位置X 2 4 s時，底座部5即與動作部6 及斜盤凸輪7 —起隨凸輪銷2 5對固定托架4 0作朝箭頭 A 2所指方向移動，俾將線張力調節用彈簧4之彈簧力量 予以調弱。如此地隨線張力調節轉盤1 9之轉動操作使底 座部5與凸輪銷2 5 —起沿箭頭A 1 ，A 2所指方向移動 時，由於被底座部5支持之動作部6及斜盤凸輪7朝同方 向移動，故可將線張力調節用彈簧4之彈簧力量的強弱做 相對的粗調節，進而可對線的張力作相對的粗調節。更且 如於第1圖中所示被固定於縫紉機內之固定托架4 0處有 寬度調節轉盤4 7以軸4 7 X介於中間依照可轉動方式支 持之。寬度調節轉盤4 7係用以調節鋸齒形縫法之寬度者 。固定托架4 0係被固定於縫紉機上。 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） (請先閲讀背面之注意事項再填寫本頁} 一可 經濟部智慧財產局員工消費合作社印製 -14- 554112 A7 B7 五、發明説明（ 縫法調節轉盤2 0係以軸2 Ο X介於中間依轉動自如 方式被固定托架4 0所支持。縫法調節轉盤2 0，係屬於 縫製之際用以調節每1針線對布之針腳長短量之調節部， 換言之，係調節於縫製時之1針的針腳長短之縫法調節部 。於是乎，縫法調節轉盤2 0具有除調節1針之針腳長短 之外，尙有謀求微細調節線之張力的操作部之功能。 如於第1圖所示，在縫法調節轉盤2 0和凸輪連桿8 之間，設置具動作傳達機構功能之擺動連桿機構9。擺動 連桿機構9，係用以將作爲操作部之縫法調節轉盤2 0之 操作傳達給凸輪連桿8者。如於第1圖所示，擺動連桿機 構9 ，具有藉由縫法調節轉盤2 0之轉動操作被擺動之第 1連桿2 8 ，和用以連接第1連桿2 8與凸輪連桿8間之 可擺動的第2連桿2 9。第1連桿2 8之他端部2 8 c與 第2連桿2 9之一端部2 9 a係以居間銷4 4介於中間依 沿上下方向可擺動之方式連結。第2連桿2 9之中間部復 以銷2 9 m介於中間依沿上下方向可擺動之方式被線張力 調節托架1所$持。第2連桿2 9之他端部2 9 c與作爲 凸輪連桿8他端部8 c之下端部則以銷2 9 e介於中間依 沿上下方向可擺動之方式連結。 如於第1圖所示，在擺動連桿機構9之第1連桿2 8 中間部設有擺動托架部3 0。該擺動托架部3 0係第1連 桿2 8於擺動之際成爲擺動中心域者。第1連桿2 8之擺 動托架部3 0，係藉具調節部功能之調節軸3 5依朝上下 方向可擺動之方式被固定托架4 0所支持。該調節軸3 5 本紙張尺度適用中國國家標準（CNS ) Α4規格（210Χ297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -15- 554112 A7 _B7 五、發明説明（θ (請先閲讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 ，則如屬分解圖之第5圖中所示，係具有：依可轉動方式 藉歛縫裝配於固定托架4 0之裝配孔4 0 m中的小徑第工 軸3 6 ;和連設於第1軸3 6且持有對第1軸3 6之第1 中心軸芯8 1偏心之第2中心軸芯8 2復依可轉動方式裝 配在第1連桿2 8之擺動托架部3 0之穿通孔3 Ο X中之 大徑第2軸3 7 ;和可將調節軸3 5改變到任意之轉動位 相予以保持之轉動操作部3 8。由於調節軸3 5之第1軸 3 6係被嵌裝於固定托架4 0之裝配孔4 Om中，故可防 止第1軸3 6所屬第1中心軸芯8 1對固定托架4 0之移 動。由於調節軸3 5之第2軸3 7係與第1軸3 6呈偏心 而連設，故第2軸3 7之第2中心軸芯8 2係對第1軸 3 6之第1中心軸芯8 1偏心者，其結果，第2軸3 7即 可對第1軸3 6之第1中心軸芯8 1及固定托架4 0作移 動。該對調節軸3 5之轉動操作部3 8所屬槽溝插入螺絲 起子等之工具轉動操作時，可將調節軸3 5之轉動位相對 固定托架40而言，朝箭頭El ，E2所示方向改變，並 維持在改變後之位置上。意即，如第7圖所示，經由對第 1軸3 6之第1中心軸芯8 1所作第2軸3 7之第2中心 軸芯8 2之轉動變位，可使第2軸3 7作朝上下方向相當 於偏心値範圍內之變位，結果，將可對第1連桿2 8中嵌 裝著第2軸3 7之具穿通孔3 Ox的擺動托架部3 0 (擺 動中心域）進行朝上下方向即箭頭D 1 ，D 2所指方向之 高度調節。又如於第3圖所示，轉動操作部3 8係較固定 托架4 0及封裝外板1 8朝外方露出，俾利使用者之轉動 本紙張尺度適用中國國家標準（CNS ) A4規格（210 X 297公釐） -16- 554112 A7 B7 五、發明説明（ι4 操作。 如第1圖所示，縫法調節轉盤2 0具有沿圓弧之第2 凸輪槽4 2。令N 1表示縫法調節轉盤2 0所屬轉動中心 K與第2凸輪槽4 2之一端間之距離，而N 2爲從縫法調 節轉盤2 0之轉動中心K至第2凸輪槽4 2之一端間之距 離，則距離N 1之設定値較距離N 2爲小（N 1 < N 2 ) 。第2凸輪槽4 2朝長度方向之中間係作成槽部分4 2 m 。設於第1連桿2 8 —端部2 8 a上之卡合銷4 8，則依 照可對縫法調節轉盤2 0之第2凸輪槽4 2作柏對性移動 之方式卡合。嵌配於第2凸輪槽4 2之卡合銷4 8之高度 位置，即第1連桿2 8之一端部2 8 a之高度位置則可利 用距離N 1及距離N 2作上下方向之調節。當卡合銷4 8 位於第2凸輪槽4 2朝長度方向之中間位置時，設定卡合 銷4 8之高度位置維持與調節軸3 5之第1軸3 6之第1 中心軸芯8 1的高度位置相同之程度者。 於第1圖中，當縫法調節轉盤2 0往箭頭S 1所指 方向轉動操作時，卡合銷4 8沿縫法調節轉盤2 0之第2 凸輪槽4 2作相對性移動，並移往第2凸輪槽4 2中屬距 離N 1之槽部分4 2 s。藉此，第一連桿2 8之一端部2 8 a之高度位置相對地往箭頭p \所指方向（上方向）調 節之。於是第1連桿2 8以調節軸3 5之第1軸3 6之第 1中心軸芯8 1爲中心而擺動，故第1連桿2 8之他端部 2 8 c及第2連桿2 9之一端部2 9 a —起朝箭頭R 1所 示方向（下方向）擺動，甚至由於第2連桿2 9在銷2 9 本紙張尺度適用中國國家標隼（CNS ) A4規格（2丨0、〆297公釐） (請先閲讀背面之注意事項再填寫本頁) 訂 經濟部智慧財產局員工消費合作社印製 -17- 554112 A7 B7 五、發明説明（1合 (請先閲讀背面之注意事項再填寫本頁) m之四周轉動之故，第2連桿2 9之他端部2 9 c朝箭頭 Y 1所指方向（上方向）擺動，使沿著垂直方向之凸輪連 桿8即與凸輪推壓部1 4 一起朝箭頭Y 1所指方向（上方 向）移動。結果，凸輪連桿8之凸輪推壓部1 4朝對斜盤 凸輪7前進之方向（箭頭Y 1所指方向，上方向）移動， 進而動作部6對底座部5朝箭頭A 1所指方向移動而接近 線張力調節圓盤3 a ，3 b使線張力調節彈簧4作朝箭頭 A 1所指方向之彈性變形，而增強線張力調節彈簧4之彈 簧力量。結果，使一方之線張力調節圓盤3 a推抵他方之 線張力調節圓盤3 b之彈簧力增強，連帶地使被線張力調 節圓盤3 a，3 b所夾住之線之張力增強。 又’如於第1圖所示，在第1連桿2 8，由於他端部 2 8 c之長度較另一他端部2 8 a之長度爲長，故卡合銷 4 8朝上下方向之位移將被放大後傳達至他端部2 8 c。 即’第1連桿2 8係持有用以可放大卡合銷4 8朝上下方 向之移位之移位放大機構。 經濟部智慧財產局員工消費合作社印製 與前述者相反的，當如於第1圖中將縫法調節轉盤 2 0朝箭頭S 2所指方向轉動操作時，卡合銷4 8隨即沿 縫法調節轉盤2 0之第2凸輪槽4 2作相對性移動，並往 第2凸輪槽4 2中屬於距離N 2 ( N 2 > N 1 )之槽部分 42r。藉此，第1連桿28之一端部28a之高度位置 相對地往箭頭P 2所指方向（下方向）被調節。由是因第 1連桿2 8以調節軸3 5之第1軸3 6所屬第1中心軸芯 8 1爲中心擺動故，使第1連桿2 8之他端部2 8 c和第 本紙張尺度適用中國國家標準（CNS) M規格（21GX297公楚）' -18- 554112 A7 B7 五、發明説明（1合 2連桿2 9之一端部2 9 a —起朝箭頭R2所指方向（上 方向）擺動，進而使第2連桿2 9在銷2 9 m之四周轉動 之故，第2連桿2 9之他端部2 9 c往箭頭Y 2所指方向 (下方向）擺動，致使凸輪連桿8與凸輪推壓部1 4 一起 朝箭頭Y 2所指之方向（下方向）移動。結果，凸輪連桿 8使凸輪推壓部1 4朝對斜盤凸輪7作後退之方向（下方 向’箭頭Y 2所指方向）移動，動作部6即以從線張力調 節圓盤3 a ，3 b離開般地朝箭頭a 2所指方向移動並使 線張力調節用彈簧4作朝箭頭A 2所指方向之彈形變形， 於是減弱線張力調節用彈簧4之彈簧力量，連帶使一方之 線張力調節圓盤3 a推抵他方之線張力調節圓盤3 b的彈 簧力減弱，而減弱線之張力。 第9 (A)〜（C)圖，係表示調節軸35之第2軸 3 7所屬第2中心軸芯8 2設於和第1軸3 6之第1中心 軸芯8 1相同高度之情形（以下，又稱爲第1連桿中立位 置）者。第9 ( A )圖復表示縫法調節轉盤2 0之刻度停 在彈簧力弱之狀態，意即刻度表示〇之狀態。第9 ( c ) 圖則表示縫法調節轉盤2 0之刻度表示彈簧力強之狀態， 意即刻度表示4之狀態者。如第9 ( A )圖所示，當縫法 調節轉盤2 0之刻度爲0時，卡合銷4 8乃與第2凸輪槽 4 2中之槽部分4 2 r相卡合。在這狀態時如第9 ( A ) 圖所示，第1連桿2 8之一端部2 8 a越往卡合銷4 8之 方向越呈下降傾斜之情形。因此之故，可從前述記載瞭解 ，凸輪連桿8之凸輪推壓部1 4乃相對地處於下側位置， 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁) 丁 、τ 經濟部智慧財產局員工消費合作社印製 -19- 554112 A7 B7____ 五、發明説明（1》 (請先閱讀背面之注意事項再填寫本頁} 且如前所述，凸輪連桿8之凸輪推壓部1 4將斜盤凸輪7 朝箭頭A 1所指之方向推壓之量較小。因而線張力調節用 彈簧4之彈簧力量較弱，致一方之線張力調節圓盤3 a推 抵他方之線張力調節圓盤3 b之彈簧力亦弱。 第9 ( C )圖係如前所述，表示縫法調節轉盤2 0之 刻度在4的時候者。如於第9 ( C )圖所示，當縫法調節 轉盤2 0之刻度爲4時，卡合銷4 8乃與第2凸輪槽4 2 中之槽部分4 2 s相卡合。於此狀態時，如於第9 ( C ) 圖所示，第1連桿2 8之一端部2 8 a越往卡合銷4 8之 方向時越上昇傾斜。因此凸輪連桿8之凸輪推壓部1 4乃 相對地插入上側，致將斜盤凸輪7朝箭頭A 1所指方向推 之力量較大。故線張力調節用彈簧4之強性變形量趨強， 線張力調節用彈簧4之彈簧力亦強，使一方之線張力調節 圓盤3 a推抵他方之線張力調節圓盤3 b的彈簧力趨強。 第9 ( B )圖係表示縫法調節轉盤2 0之刻度在彈簧 經濟部智慧財產局員工消費合作社印製 力爲中間之狀態，就是刻度指在1 · 5之狀態者。如於第 9 ( B )圖所示，當縫法調節轉盤2 0之刻度指示1 · 5 時，卡合銷4 8即與第2凸輪槽4 2中屬中間之槽部分 4 2 m卡合。處於該狀態之時，如於第9 ( B )圖所示第 1凸輪連桿2 8之一端部2 8 a係略呈水平者。由是可從 前述所記載者暸解凸輪連桿8之凸輪推壓部1 4乃相對地 處於中間側之位置，而以中間力量將斜盤凸輪7朝箭頭A 1所指方向推壓。故線張力調節用彈簧4之彈性變形量亦 屬中間程度，因而線張力調節用彈簧4之彈簧力爲中道， 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -20- 經濟部智慧財產局員工消費合作社印製 554112 A7 B7 五、發明説明（1$ 且一方之線張力調節圓盤3 a推抵他方之線張力調節圓盤 3 b之彈簧力量亦屬於中道者。 繼之，第1 0 ( A )〜（C )圖係表示當轉動操作調 節軸3 5而使調節軸3 5之第2軸3 7所屬第2中心軸芯 8 2移往較第1軸3 6之第1中心軸芯8 1爲上側之情形 (以下，又稱第1連桿上位移位置）。第1〇 (a)圖表 示縫法調節轉盤2 0之刻度指彈簧力量弱之狀態，就是說 刻度指在0之狀態。第1 0 ( C )圖表示縫法調節轉盤2 0之刻度指彈簧力量強之狀態，就是說刻度指示4之狀態 。第1 0 ( B )圖表示縫法調節轉盤2 0之刻度指彈簧力 量屬中道之狀態，就是說刻度指1 . 5之狀態者。 經過調節軸3 5調爲第1連桿上移位位置之如第1 0 (A )〜（C )圖所示情形時，比調至第1連桿中立位置 之前述第9 ( A )〜（C )圖所示情形，其相當於第1連 桿2 8之擺動中心域之擺動托架部3 0係移位至較上方者 。因而，相當於第1連桿2 8之擺動中心域的擺動托架部 3 0係移位於上方，因此之故第1連桿2 8之他端部2 8 c乃朝上方（箭頭R 2所指方向）移位，使連結於第1連 桿2 8之他端部2 8 c之第2連桿2 9之一端部2 9 a也 朝上方（如箭頭R 2所指方向）移位者。是以第2連桿 2 9之他端部2 9 c係朝下方（如箭頭γ 2所指方向）移 位，而凸輪連桿8，凸輪推壓部1 4則朝下方（如箭頭Y 2所指方向）移位者。換言之，縫法調節轉盤2 0之刻度 雖然相同，當屬第1連桿爲上移位位置之如第1 0 (A) 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） (請先閱讀背面之注意事項再填寫本頁)-13- 554112 A7 B7 V. Description of the invention (Cam pin 2 5 reaches the cam position 2 4 r of the first cam groove 2 4 relatively. When the cam pin 2 5 of the base portion 5 reaches the i cam groove so relatively When the cam position 2 4 r of 2 4 is, the base part 5 is together with the cam pin 2 $ together with the action part 6 and the swash plate cam 7 toward the fixed bracket 4 〇 toward the spring 4 for adjusting the thread tension, that is, It moves in the direction shown by arrow a1, and the spring force of the wire tension adjustment spring 4 is used to increase its spring force. In contrast to this, when the wire tension adjustment dial 19 is turned in the direction shown by arrow B 2 in the opposite direction Since the first cam groove 24 is rotated together with the thread tension adjusting dial 19, the first cam groove 2 4 will be opposite to the cam pin 25 of the base portion 5 in the same direction. Move so that the cam pin 2 5 of the base portion 5 reaches the cam position 2 4 s of the first cam groove 2 4 relatively. When the cam pin 2 5 relatively reaches the cam position X 2 4 of the first cam groove 2 4 At s, the base part 5 is the same as the action part 6 and the swash plate cam 7. Starting from the cam pin 25, the fixed bracket 40 is directed in the direction of the arrow. Move in the direction indicated by A 2, 俾 weaken the spring force of the thread tension adjustment spring 4. In this way, with the rotation of the thread tension adjustment turntable 19, the base portion 5 and the cam pin 2 5 start up along the arrow A 1, When moving in the direction indicated by A 2, since the action portion 6 supported by the base portion 5 and the swash plate cam 7 move in the same direction, the strength of the spring force of the wire tension adjustment spring 4 can be relatively coarse adjusted, and thus the Coarsely adjust the tension of the thread. As shown in the first figure, it is fixed to the fixing bracket in the sewing machine. There is a width adjustment dial 4 at 40. The shaft 4 7 X is in the middle and can be rotated. Support it. The width adjustment dial 4 7 is used to adjust the width of the zigzag stitching method. The fixing bracket 4 0 is fixed to the sewing machine. This paper size applies the Chinese National Standard (CNS) A4 size (210 × 297 mm) ( Please read the notes on the back before filling in this page} Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -14-554112 A7 B7 V. Description of the invention (Sewing method adjustment dial 2 0 is with axis 2 〇 X is in the middle Fixed in a freely rotating manner Supported by the bracket 40. The sewing method adjusting dial 20 is an adjusting part for adjusting the length of the stitches of each stitch on the cloth during sewing, in other words, it is a seam that adjusts the stitch length of 1 stitch during sewing Therefore, in addition to adjusting the stitch length of 1 stitch, the stitch adjustment dial 20 has the function of an operation part that seeks to finely adjust the tension of the thread. As shown in Fig. 1, the stitch adjustment Between the turntable 20 and the cam link 8, a swing link mechanism 9 having a function of a motion transmission mechanism is provided. The swing link mechanism 9 is used to communicate the operation of the turntable 20, which is a sewing method of the operation part, to the cam link. 8 people. As shown in FIG. 1, the swing link mechanism 9 includes a first link 2 8 that is swung by a turning operation of the turntable 20 to adjust the rotational operation of the turntable 20, and a first link 28 that is connected to the cam link. The 8 second swing link 2 9. The other end portion 2 8 c of the first link 2 8 and one end portion 2 9 a of the second link 2 9 are connected with the intermediate pin 4 4 swingable in the vertical direction with the intermediate pin 4 4 interposed therebetween. The middle part of the second link 2 9 is held by the thread tension adjusting bracket 1 so that the pin 2 9 m can swing in the middle and up and down. The other end 2 9 c of the second link 29 is connected to the lower end of the other end 8 c of the cam link 8 so that the pin 2 9 e can swing in the vertical direction with the pin 2 9 e in between. As shown in FIG. 1, a swing bracket portion 30 is provided at an intermediate portion of the first link 2 8 of the swing link mechanism 9. This swing bracket portion 30 is the first link 28 that becomes the center of the swing when swinging. The swinging bracket part 30 of the first link 28 is supported by the fixed bracket 40 in such a manner as to be able to swing in an up and down direction by an adjusting shaft 35 having an adjusting part function. The adjustment shaft 3 5 This paper size applies to Chinese National Standard (CNS) Α4 specifications (210 × 297 mm) (Please read the precautions on the back before filling this page) Order printed by the Intellectual Property Bureau of the Ministry of Economic Affairs, Consumer Cooperatives -15-554112 A7 _B7 V. Description of the invention (θ (Please read the notes on the back before filling this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, as shown in Figure 5 of the exploded diagram, it has: Rotating mode is assembled with a small diameter first work shaft 36 in the mounting hole 40 m of the fixing bracket 40 by caulking; and is connected to the first shaft 36 and holds the first center of the first shaft 36 Shaft core 8 1 eccentric second center shaft core 8 2 is rotatably assembled in the swing bracket portion 30 of the first connecting rod 28 3 through-hole 3 0 in the large diameter second shaft 3 7; and The rotating operation part 38, which can change the adjustment shaft 35 to any rotation phase, is maintained. Since the first shaft 3 6 of the adjustment shaft 35 is embedded in the mounting hole 4 Om of the fixing bracket 40, It can prevent the first central shaft core 8 to which the first shaft 3 6 belongs from moving 1 pair of fixed brackets 40. Since the second shaft 3 7 of the adjustment shaft 3 5 is connected to the first shaft 3 6 The second central shaft core 8 2 of the second shaft 3 7 is eccentric to the first central shaft core 8 1 of the first shaft 3 6. As a result, the second shaft 37 can be aligned with the first shaft 3 7. The first central shaft core 8 1 of the shaft 3 6 and the fixed bracket 40 are moved. The pair of adjusting operation shafts 3 5 of the rotating operation part 3 8 is inserted into a slotted screwdriver and the like, and the adjusting shaft 3 can be adjusted. The rotation position of 5 is changed relative to the fixed bracket 40 in the directions shown by arrows El and E2, and is maintained at the changed position. That is, as shown in FIG. 1 The center shaft core 8 1 makes the second shaft 3 7 and the second center shaft core 8 2 rotates and displaces, so that the second shaft 3 7 can be displaced in the vertical direction corresponding to the range of eccentricity. As a result, it will be able to The height of the swing bracket portion 30 (the swing center area) with the through hole 3 Ox in which the second shaft 37 is fitted in the first link 28 is directed upward, that is, the height indicated by the arrows D 1 and D 2 Adjustment. As shown in Figure 3, the rotation operation part 38 is exposed to the outside than the fixed bracket 40 and the package outer plate 18. For the convenience of the user's rotation, the paper size is subject to the Chinese National Standard (CNS) A4 Specifications (210 X 297 mm) -16- 554112 A7 B7 V. Description of the invention (ι4 operation. As shown in Fig. 1, the sewing method adjusting dial 2 0 has a second cam groove 4 2 along an arc. Let N 1 Indicates the distance between the rotation center K to which the sewing method turntable 20 belongs and one end of the second cam groove 42, and N2 is the distance from the rotation center K of the sewing method turntable 20 to one end of the second cam groove 42. Distance, the setting of distance N 1 is smaller than distance N 2 (N 1 < N 2). The second cam groove 42 is formed with a groove portion 4 2 m in the middle in the longitudinal direction. The engaging pin 4 8 provided on the first link 2 8 -the end 2 8 a is engaged with the second cam groove 4 2 of the turntable 20 according to the seam adjustment method. The height position of the engaging pin 4 8 fitted in the second cam groove 4 2, that is, the height position of one end 2 8 a of the first link 2 8 can be adjusted by the distance N 1 and the distance N 2 in the vertical direction. . When the engaging pin 4 8 is located at the middle position of the second cam groove 42 in the longitudinal direction, the height position of the engaging pin 4 8 is maintained and adjusted. The first center shaft 3 5 and the first center shaft core 8 1 The same height position. In the first figure, when the sewing method adjusting turntable 20 is rotated in the direction indicated by the arrow S 1, the engaging pin 4 8 moves relative to the second cam groove 42 of the sewing method adjusting turntable 20 and moves in parallel. The second cam groove 42 is a groove portion 4 2 s of a distance N 1. Thereby, the height position of one end portion 28 a of the first link 28 is relatively adjusted in the direction (upward direction) indicated by the arrow p \. Then, the first link 2 8 swings around the first central shaft core 8 1 of the first shaft 3 6 of the adjustment shaft 3 5, so the other end portion 2 8 c of the first link 2 8 and the second link 2 9 One of the ends 2 9 a —Swing in the direction shown by the arrow R 1 (downward direction), even because the second link 2 9 is on the pin 2 9 This paper size applies to China National Standard (CNS) A4 specifications (2丨 0, 〆 297 mm) (Please read the notes on the back before filling this page) Order printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -17- 554112 A7 B7 V. Description of the invention (1 go (please read the back first For the matters needing attention, please fill in this page again.) As the m is turned around, the other end of the second link 2 9 2 9 c swings in the direction indicated by arrow Y 1 (upward direction), so that the cam link along the vertical direction 8 is moved with the cam pressing portion 1 4 in the direction indicated by arrow Y 1 (upward direction). As a result, the cam pressing portion 1 4 of the cam link 8 is advanced in the direction toward the swash plate cam 7 (arrow Y 1 Direction (upward direction), and the action portion 6 moves the base portion 5 in the direction indicated by arrow A 1 to approach the thread tension adjusting discs 3 a and 3 b to adjust the thread tension. The spring 4 is elastically deformed in the direction indicated by the arrow A 1 to increase the spring force of the wire tension adjustment spring 4. As a result, one of the wire tension adjustment disks 3 a is pushed against the spring of the other wire tension adjustment disk 3 b. The force is increased, and the tension of the wire clamped by the thread tension adjusting discs 3 a and 3 b is increased. Also, as shown in the first figure, at the first link 2 8, since the end portion 2 8 The length of c is longer than the length of the other end portion 2 8 a, so the upward and downward displacement of the engaging pin 4 8 will be amplified and transmitted to the other end portion 2 8 c. That is, the "first link 2 8 series" Holding a shift magnification mechanism that can magnify the displacement of the snap pin 4 8 in the up and down direction. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints the opposite of the previous one, and adjusts the sewing method as shown in Figure 1. When the turntable 20 is rotated in the direction indicated by the arrow S 2, the engaging pin 4 8 then adjusts the second cam groove 4 2 of the turntable 20 in a relative manner and moves relative to the second cam groove 42. N 2 (N 2 > N 1) groove portion 42r. With this, the height position of one end portion 28 a of the first link 28 is relatively directed to the direction indicated by arrow P 2 (Downward direction) is adjusted. Because the first link 2 8 swings around the first central shaft core 8 1 of the adjusting shaft 3 5, the other end of the first link 2 8 Part 2 8 c and this paper size are applicable to the Chinese National Standard (CNS) M specification (21GX297). -18- 554112 A7 B7 V. Description of the invention (1 in 2 connecting rod 2 9 one end 2 9 a-up Swing in the direction indicated by arrow R2 (upward direction), so that the second link 2 9 is rotated around the pin 2 9 m, and the other end 2 9 c of the second link 2 9 is directed to the arrow Y 2 Swing (downward direction) causes the cam link 8 to move in the direction (downward direction) indicated by arrow Y 2 together with the cam pressing portion 1 4. As a result, the cam link 8 moves the cam pressing portion 14 in a backward direction of the swash plate cam 7 (in the direction indicated by the arrow “Y2”), and the action portion 6 adjusts the disk 3 a from the line tension, 3 b moves away in the direction indicated by arrow a 2 and deforms the wire tension adjustment spring 4 in the direction indicated by arrow A 2, so that the spring force of the wire tension adjustment spring 4 is weakened, and one of the The spring force of the thread tension adjusting disc 3 a pushed against the other wire tension adjusting disc 3 b is weakened, and the thread tension is weakened. Figures 9 (A) to (C) show the case where the second central shaft core 8 2 of the adjustment shaft 35 is located at the same height as the first central shaft core 81 of the first shaft 3 6 (Hereinafter, also referred to as the first link neutral position). Figure 9 (A) shows the scale of the sewing method adjustment dial 20 stopped at a state where the spring force is weak, which means that the scale shows 0. Figure 9 (c) shows the scale of the sewing method adjustment dial 20 indicating the state of strong spring force, which means that the scale indicates the state of 4. As shown in FIG. 9 (A), when the scale of the sewing method adjusting dial 20 is 0, the engaging pin 4 8 is engaged with the groove portion 4 2 r in the second cam groove 4 2. In this state, as shown in FIG. 9 (A), one end portion 2 8a of the first link 28 is inclined downward as it goes toward the engaging pin 48. Therefore, it can be understood from the foregoing description that the cam pressing portion 14 of the cam link 8 is relatively in the lower position. This paper size applies to the Chinese National Standard (CNS) A4 specification (210X297 mm) (Please read first Note on the back, please fill out this page) D, τ Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs-19- 554112 A7 B7____ V. Description of the invention (1) (Please read the notes on the back before filling this page} and if As mentioned above, the cam pressing portion 1 4 of the cam link 8 pushes the swash plate cam 7 in the direction indicated by the arrow A 1 by a small amount. Therefore, the spring force of the wire tension adjusting spring 4 is weak, causing one side The spring force of the thread tension adjusting disc 3 a pushed against the other thread tension adjusting disc 3 b is also weak. Figure 9 (C) shows the time when the scale of the sewing method adjustment disc 20 is 4 as described above. As shown in FIG. 9 (C), when the scale of the sewing method adjusting dial 20 is 4, the engaging pin 4 8 is engaged with the groove portion 4 2 s in the second cam groove 4 2. In this state, as shown in Fig. 9 (C), one end portion 2 8a of the first link 2 8 is more toward the engaging pin 4 8 As time goes by, it rises and tilts. Therefore, the cam pressing portion 14 of the cam link 8 is relatively inserted into the upper side, so that the swash plate cam 7 is pushed in the direction indicated by the arrow A 1. The force of the spring 4 The amount of strong deformation becomes stronger, and the spring force of the wire tension adjusting spring 4 is also stronger, so that the spring force of one of the wire tension adjusting discs 3 a against the other wire tension adjusting disc 3 b becomes stronger. Section 9 (B ) The figure shows that the scale of the sewing method adjustment dial 20 is in the middle of the printing force of the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, that is, the scale refers to the state of 1.5. As shown in Figure 9 (B) It is shown that when the scale indicator of the sewing method turntable 20 indicates 1 · 5, the engaging pin 4 8 is engaged with the middle groove portion 4 2 m of the second cam groove 42. In this state, as in One end portion 2 8 a of the first cam link 2 8 shown in FIG. 9 (B) is slightly horizontal. Therefore, it can be understood from the foregoing description that the cam pressing portion 1 4 of the cam link 8 is relatively It is in the middle position, and the swash plate cam 7 is pressed in the direction indicated by the arrow A 1 with an intermediate force. Therefore, the spring 4 for thread tension adjustment The amount of elastic deformation is also intermediate, so the spring force of the spring 4 for wire tension adjustment is the middle. This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm). -20- Consumption by employees of the Intellectual Property Bureau of the Ministry of Economic Affairs Printed by the cooperative 554112 A7 B7 V. Description of the invention (1 $ and the spring tension of one of the thread tension adjusting discs 3 a against the other's thread tension adjusting disc 3 b also belongs to the middle. Then, No. 1 ( A) ~ (C) The diagram shows that when the adjustment shaft 35 is rotated, the second shaft 3 of the adjustment shaft 3 5 is moved to the second center shaft core 8 2 which is moved to the first center shaft core 3 to 6 from the first shaft. 8 1 is the upper side (hereinafter, also referred to as the displacement position on the first link). No. 10 (a) Chart The scale of the seam adjustment dial 20 refers to the state where the spring force is weak, that is, the scale refers to the state of 0. Figure 10 (C) shows the scale of the sewing method adjustment dial 20 refers to the state of strong spring force, that is, the state of the scale indication 4. Fig. 10 (B) shows that the scale of the sewing method adjusting dial 20 refers to the state where the spring force is in the middle, that is, the scale refers to the state of 1.5. When adjusted through the adjustment shaft 35 to the shift position on the first link as shown in Figures 10 (A) to (C), the ratio is adjusted to the aforementioned 9th (A) to the neutral position of the first link (C) In the situation shown in the figure, the swing bracket portion 30 corresponding to the swing center region of the first link 28 is shifted to the upper one. Therefore, the swing bracket portion 30 corresponding to the swing center region of the first link 28 is moved upward, so that the other end portion 2 8 c of the first link 28 faces upward (arrow R 2 (Pointing direction) shift, so that one end 2 9 a of the second link 2 9 connected to the other end 2 8 c of the first link 2 8 is also shifted upward (as indicated by the arrow R 2). By. Therefore, the other end portion 2 9 c of the second link 2 9 is shifted downward (as indicated by the arrow γ 2), while the cam link 8 and the cam pressing portion 1 4 are directed downward (as indicated by the arrow Y 2). (Pointing direction) shifter. In other words, although the scale of the sewing method adjustment dial 20 is the same, the first link is the upper shift position as the first 10 (A) This paper size applies the Chinese National Standard (CNS) A4 specification (210X 297 mm) (Please read the notes on the back before filling this page)
-21 - 554112 A7 B7 五、發明説明（θ 〜（C )圖所示之情形時，將比屬第1連桿中立位置之如 第9 ( A )〜（C )圖所示之情形，其線張力調節用彈簧 (請先閲讀背面之注意事項再填寫本頁) 4將有等同凸輪推壓部1 4往下方移位之分量的補正成稍 弱之彈簧力。所以藉調節軸3 5予以調節之第1連桿上移 位位置，係相當於將線張力調節用彈簧4補正爲稍弱之位 置也。 其次’以第1 1 ( A )〜（C )圖表示將調節軸3 5 予以轉動操作，致使調節軸3 5之第2軸3 7之第2中心 軸芯8 2位移到較第1軸3 6之第1中心軸芯8 1爲下側 之處的情形（以下，稱爲第1連桿下移位位置）。第1 1 (A )圖表示縫法調節轉盤2 0之刻度指在彈簧力量弱之 狀態，就是刻度爲0之狀態者。第1 1 ( C )圖表示縫法 調節轉盤2 0之刻度指在彈簧力強之狀態，就是刻度爲4 之狀態者。而第1 1 ( B )圖表示縫法調節轉盤2 〇之刻 度指在彈簧力爲中道之狀態，就是刻度爲1 · 5之狀態。 比較如第1 1 ( A )〜（C )圖表示將第1連桿置於 經濟部智慧財產局員工消費合作社印製 下移位位置之情形與如第9 ( A )〜（C )圖表示將第1 連桿置於中立位置之情形時，前者係藉調節軸3 5將相當 於第1連桿2 8之擺動中心域之擺動托架部3 0位移至下 方者。所以第1連桿2 8之他端部2 8 c係朝下方（箭頭 R 1所指方向）位移，而與第1連桿2 8之他端部2 8 c 連結之第2連桿2 9之一端部2 9 a也朝下方（箭頭r 1 所指方向）位移者。因此第2連桿2 9之他端部2 9 c乃 朝上方位移，凸輪連桿8、凸輪推壓部1 4也朝上方（箭 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -22- 554112 A7 B7 五、發明説明（Μ 頭Υ 1所指方向）位移。換言之，縫法調節轉盤2 0之刻 度雖然相同，但表示於第1 1 (Α)〜（C)中第1連桿 (請先閲讀背面之注意事項再填寫本頁) 下移位位置之情形，將較表示於第9 ( A )〜（C )中第 1連桿中立位置之情形，其線張力調節用彈簧4之彈簧力 量將接受相當於凸輪推壓部1 4朝上方位移之分量補正於 較強之範圍。因而藉調節軸3 5所調節之第1連桿下移位 位置’即相當於將線張力調節用彈簧4之彈簧力補正爲較 強之範圍之位置。 BP，第 9 (A)圖、第 1〇 (A)、第 11 (Α)圖 中所示縫法調節轉盤2 0之刻度皆指在0處，具有相對應 的關係。於第9 ( A )圖、第1 〇 ( A )、第1 1 ( A ) 圖中’將凸輪連桿8之凸輪推壓部1 4之高度予以比較時 ’雖然縫法調節轉盤2 0之刻度同指0，但其順序爲第 10 (A)圖 < 第9 (A)圖 < 第11 (A)圖。因此線 張力調節用彈簧4之彈簧力及線之張力，則循第1 〇 ( A )圖<第9 (八）圖<第11 (A)圖之順序。 第9 (B)圖、第10 (B)圖、第11 (B)圖中 經濟部智慧財產局員工消費合作社印製 所示縫法調節轉盤2 0之刻度皆指在1 · 5處，係具有相 對應的關係。於第9 ( B )圖、第1 0 ( B )圖、第1 1 (B )圖中，比較其凸輪連桿8所屬凸輪推壓部1 4之高 度時，雖然其縫法調節轉盤2 0之刻度皆指在1 . 5之相 同處，但其順序爲第1〇 (B)圖 < 第9 (8)圖<第 1 1 ( B )圖。因此線張力調節用彈簧4之彈簧力量及線 之張力，則循第1 0 ( B )圖 < 第9 ( B )圖〈第1 1 ( 本紙張尺度適用中國國家標隼（CNS ) A4規格（210X297公釐） -23- 554112 A7 B7 五、發明説明（2) B )圖之順序。 第9 (C)圖、第1〇 (C)圖、第11 (C)圖中 (請先閲讀背面之注意事項再填寫本頁) 所示縫法調節轉盤2 0之刻度係指在4處，具有相對應的 關係。於第9 (C)圖、第1〇（C)圖、第11 (C) 圖中，比較其凸輪連桿8之凸輪推壓部1 4之高度時，雖 然其縫法調節轉盤2 0之刻度皆同爲4，但其順序爲第1 0 ( C )圖 < 第9 ( C )圖 < 第1 1 ( C )圖。因此線張 力調節用彈簧4之彈簧力量及線之張力，則循第1 0 ( C )圖<第9 (C)圖 < 第11 (C)圖之順序者。 如前所述按照使用狀況藉轉動操作調節軸3 5改變調 節軸3 5之位相時，可將屬於第1連桿2 8之擺動中心域 的擺動托架部3 0之高度位置朝上下方補正，雖然縫法調 節轉盤2 0之刻度均指在相同處時，亦能補正凸輪連桿8 之凸輪推壓部1 4之高度，進而能夠補正線張力調節用彈 簧4之彈簧力大小，結果，能夠對線張力調節圓盤3 a ， 經濟部智慧財產局員工消費合作社印製 3 b保持線之保持力，即線之張力加以補正。又如於第3 圖所示，自縫紉機之正面右方依次並設有：縫法調節轉盤 2 0、寬幅調節轉盤4 7，線張力調節轉盤1 9。 依照本實施例，由於凸輪連桿8係屬連桿故，如第1 圖及第2圖所示，使用板料所形成，雖然爲輕量麵，惟沿 其表面之方向對外力之剛性頗高。第1連桿2 8及第2連 桿2 9亦相同。另者，如屬截面呈圓形之桿的時候，爲能 增加剛性抑制彎曲性，有必要將直徑加大，則產生桿之重 量急劇增加之弊。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -24- 554112 A7 B7 五、發明説明（2会 (請先閲讀背面之注意事項再填寫本頁) 如上所說明，按照本實施例時，隨伴凸輪連桿8所屬 凸輪推壓部1 4對針盤凸輪7作朝前進方向及後退方向之 移動中之一方，使動作部6與斜盤凸輪7 —起朝增強線張 力調節用彈簧4之彈簧力量的方向移動。又，隨伴凸輪連 桿8所屬凸輪推壓部1 4對斜盤凸輪7作朝前進方向及後 退方向之移動中之他方，可使動作部6與斜盤凸輪7 —起 朝減弱線張力調節用彈簧4之彈簧力量的方向移動。因此 之故，異於如第1 2圖中所示之已往技術，不須使用若不 增粗外徑即無法避免彎曲之較長長尺寸桿，而能以良好的 精度進行線張力調節用彈簧4之彈簧力量的調節。 經濟部智慧財產局員工消費合作社印製 再者依照本實施例，線張力調節機構2，係具備：具 有可將線張力調節用彈簧4之彈簧力相對地予以粗調之粗 調節操作部之功能的線張力調節轉盤1 9 ;和具有可將線 張力調節用彈簧4之彈簧力相對地予以細調之細調節操作 部之功能的縫法調節轉盤2 0而成，除能藉操作線張力調 節轉盤1 9粗調節線張力調節彈簧4之彈簧力量之強弱外 ，尙能藉操作縫法調節轉盤2 0微細地調節線張力調節用 彈簧4之彈簧力量之強弱，故可有效調節線之張力。槪括 地說，對作爲縫製對象物之布料厚度進行相當多的改變時 ，於欲將數件布料疊層予以縫製等之際，得藉轉動操作線 張力粗調節用之線張力調節轉盤1 9將線張力調節用彈簧 4之彈簧力強弱粗調，俾能適應該布料之厚度的變動。又 ，當將縫製對象物之布料由同種類換作同種類者，且其布 料係屬較薄者等時，由於布料厚度之變動不多，故不用粗 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -25- 554112 A7 B7__ 五、發明説明（2$ (請先閲讀背面之注意事項再填寫本頁) 調用之線張力調節轉盤1 9 ，而改藉轉動操作線張力微調 用之縫法力調節轉盤2 0進行張力調節用彈簧4之彈簧力 強弱之微調。 又依照本實施例時如前所述，係屬藉縫法調節轉盤 2 0之操作可微細的調節線線張力調節用彈簧4之彈簧力 的強弱者，且由於縫法調節轉盤2 0又兼用爲調節每一針 之針腳長度的縫法調節部，故可獲得能適應每一針之針腳 長度調節對線張力調節用彈簧4之彈簧力施以微調之利點 所以，當每一針之針腳越長時，可增大線張力調節用彈簧 4之彈性變形量而增強線之張力的同時，當每一針之針腳 越短’可縮小線張力調節用彈簧4之彈性變形量並得以減 弱線之張力，而對縫製處理有利。 經濟部智慧財產局員工消費合作社印製 如第3圖及第8圖所示，爲能轉動操作線張力調節轉 '湿1 9，寬度調節轉盤4 7，縫法調節轉盤2 0，將該等 局部地從封裝外板1 8之上面外露。如前所述將線張力調 節轉盤1 9，縫法調節轉盤2 0予以轉動操作時，就能夠 調節凸輪連桿8所屬凸輪推壓部1 4之高度，進而能夠調 節線張力調節用彈簧4之彈簧力大小，結果，因爲能夠調 節線之張力，故Y可以不必拆下封裝外板1 8。 如前所述，爲能夠轉動操作線張力調節轉盤1 9、寬 度調節轉盤4 7，縫法調節轉盤2 0起見，將該等局部的 從封裝外板1 8之上面1 8 u外露。因此之故，若欲於縫 糸刃機之內部構造中設置線張力調節轉盤1 9、寬度調節轉 盤4 7，縫法調節轉盤2 0之轉盤配設空間裡再配置擺動 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐) ' -- -26 - 554112 A7 B7 五、發明説明（24 (請先閲讀背面之注意事項再填寫本頁) 連桿機構9等之結構配件時自有其限制。對此點若按照本 實施例時，使斜盤凸輪7產生動作之凸輪連桿8，係如第 1圖所示沿著垂直方向而配置，在其上端部具有凸輪推壓 部1 4，並自下方朝上方移動。又在線張力調節轉盤1 9 ’寬度調節轉盤4 7，縫法調節轉盤2 0之下方設置擺動 連桿機構9，作爲擺動連桿機構9之前端的第2連桿2 9 之他端部2 9 c ，與作爲凸輪連桿8之下端的他端部8 c 相連結，使凸輪連桿8，第2連桿2 9 ，第1連桿2 8之 全體約略呈L字之形狀。由是得能抑制凸輪連桿8，第2 連桿2 9，第1連桿2 8對前述轉盤配置空間產生干擾。 另者，本發明並未僅限定於前述且在附圖所示之實施 例，而可在未脫離要點之範圍內適宜地變更實施者。於實 施例中記載之語句，雖爲一部分亦可記載於各項申請範圍 〇 <發明之效果> 經濟部智慧財產局員工消費合作社印製 按照本發明有關之縫紉機時，線張力調節機構，择具 備：底座部；和以沿可使線張力調節用彈簧之彈簧力量增 強或減弱之方向自由移動的方式設於底座部之動作部；和 在背向線張力調節用彈簧之位置設於動作部之斜盤凸輪； 和具有以可沿與線張力調節用彈簧之彈簧力作用方向交差 之方向對斜盤凸輪之前進方向及後退方向移動之方式設置 之凸輪推壓部在內之凸輪連桿；和以直接或是間接方式使 凸輪連桿動作之操作部。按照如此之本發明有關之縫紉機 本紙張尺度適用中國國家標準（CNS ) A4規格(21〇X297公釐） 一 " -27- 554112 A7 B7 五、發明説明（2含 (請先閲讀背面之注意事項再填寫本頁) 時’藉由正確選擇凸輪連桿所屬凸輪推壓部對斜盤凸輪之 插入方向及使凸輪連桿所屬凸輪推壓部對斜盤凸輪作前進 及後退之移動，能夠調節線張力調節用彈簧之彈簧力量的 強弱。 依照本發明有關之縫紉機時，由於在背向線張力調節 用彈簧之位置設置斜盤凸輪，故對將斜盤凸輪儘量靠近線 張力調節用彈簧配置之事格外有利。因此，與使斜盤凸輪 和線張力調節用彈簧互相遠離之前述已往技術不同，當欲 將斜盤凸輪之動作力傳達給線張力調節用彈簧之際，就不 必採長度較長之長桿。由是可消除長度雖長但彎曲量大之 故對線張力調節用彈簧之彈簧力調節精度没有限制之較長 桿所具缺點。從而有利於以良好的精度調節線張力調節用 彈簧之彈簧力的強弱。 <圖面之簡單說明> 第1圖係表示內部構造之正面圖。 第2圖係表示內部構造之俯視平面圖。 經濟部智慧財產局員工消費合作社印製 第3圖係表示縫紉機之封裝外板附近之正面圖。 第4圖係表示線張力調節機構之主要部的分解透視圖 〇 第5圖係擺動連桿機構之第1連桿所屬擺動部分之分 解透視圖。 第6圖表示沿第1圖中W 6 - W 6線之截面圖。 第7圖係表示調節軸動作之動作說明圖。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X 297公釐） -28- 554112 A7 B7 五、發明説明（2含 第8圖係表示縫紉機全體之正面圖。 (請先閱讀背面之注意事項再填寫本頁) 第9圖爲調節軸之第1軸的第1軸芯和第2軸的第2 軸芯之高度位置相同時之動作說明圖。 第1 0圖係當調節軸之第2軸的第2軸芯在較第1軸 的第1軸芯爲高的位置時之動作說明圖。 第1 1圖係當調節軸之第2軸的第2軸芯在較第1軸 的第1軸芯爲低的位置時之動作說明圖。 第1 2圖係表示與已往技術有關之構成圖。 <圖號說明> 2 線張力調節機構 3 a、3 b 線張力調節圓盤 4 線張力調節用彈簧 5 底座部 6 動作部 7 斜盤凸輪 經濟部智慧財產局員工消費合作社印製 8 凸輪連桿 9 擺動連桿 10 凸輪限制部 14 凸輪推壓部 15 凸輪連桿 18 封裝外板 19 線張力調節轉盤（粗調節操作部） 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -29--21-554112 A7 B7 V. Description of the invention (θ ~ (C) The situation shown in the figure will be more than the neutral position of the first link as shown in Figure 9 (A) ~ (C), Spring for adjusting the thread tension (please read the precautions on the back before filling in this page) 4 The correction with a component equivalent to the downward displacement of the cam pressing portion 1 4 is made to a slightly weaker spring force. Therefore, it is adjusted by adjusting the shaft 3 5 The shift position on the first link to be adjusted is equivalent to correcting the wire tension adjustment spring 4 to a slightly weaker position. Secondly, the adjustment shaft 3 5 is shown in the first 1 (A) to (C) diagrams. The rotation operation causes the second central shaft core 8 2 of the second shaft 3 5 of the adjustment shaft 35 to move to a position lower than the first central shaft core 8 1 of the first shaft 3 6 (hereinafter, referred to as Displacement position under the 1st link). Figure 1 1 (A) shows the scale of the sewing method adjusting dial 20 refers to the state where the spring force is weak, that is, the scale is 0. Figure 1 1 (C) shows The scale of the sewing method adjustment dial 20 refers to the state where the spring force is strong, that is, the scale is 4. The figure 11 (B) shows the scale of the sewing method adjustment dial 2 〇 The state of the spring force is the middle state, that is, the scale is 1 · 5. Comparing the figures 1 1 (A) to (C), the first link is placed on the consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs and printed down. The position of the position and when the first link is placed in the neutral position as shown in Figures 9 (A) to (C), the former is equivalent to the swing center of the first link 28 by adjusting the shaft 3 5 The swing bracket portion 30 is displaced to the lower one. Therefore, the other end portion 2 8 c of the first link 2 8 is displaced downward (in the direction indicated by the arrow R 1), and the other end of the first link 28 is displaced. One of the ends 2 9 a of the second link 2 9 connected by the part 2 8 c is also displaced downward (in the direction indicated by the arrow r 1). Therefore, the other end 2 9 c of the second link 2 9 is displaced upward. , The cam link 8, the cam pressing part 1 4 is also facing upwards (the paper size of the arrow is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -22- 554112 A7 B7 V. Description of the invention (M head 1 Refers to the direction) displacement. In other words, although the scale of the sewing method adjustment dial 20 is the same, it is shown in the 1st link in the 1st (A) to (C) (please read the precautions on the back first) Please fill in this page again) The situation of the shift position will be lower than that of the neutral position of the first link in 9 (A) ~ (C). The spring force of the spring 4 for wire tension adjustment will be equivalent to The upward displacement component of the cam pressing portion 14 is corrected in a stronger range. Therefore, the first displacement position of the first link adjusted by the adjustment shaft 3 5 is equivalent to correcting the spring force of the wire tension adjustment spring 4 The position of the stronger range. BP, the scales of the seam adjustment dial 20 shown in Figs. 9 (A), 10 (A), and 11 (A) are all at 0 and have a corresponding relationship. In Fig. 9 (A), Fig. 10 (A), and Fig. 1 (A), 'When comparing the height of the cam pressing portion 14 of the cam link 8', although the seam adjusting dial 2 0 The scales are the same as 0, but the order is as shown in Fig. 10 (A) < Fig. 9 (A) < Fig. 11 (A). Therefore, the spring force of the wire tension adjusting spring 4 and the wire tension follow the order of FIG. 10 (A) < FIG. 9 (eight) < FIG. 11 (A). Figure 9 (B), Figure 10 (B), and Figure 11 (B) Printed on the sewing method adjustment dial 20 shown by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. Have a corresponding relationship. In Fig. 9 (B), Fig. 10 (B), and Fig. 1 (B), when comparing the height of the cam pressing portion 14 to which the cam link 8 belongs, although the sewing method adjusts the dial 2 0 The scales are all the same in 1.5, but the order is No. 10 (B) < No. 9 (8) < No. 1 1 (B). Therefore, the spring force and thread tension of the spring 4 for thread tension adjustment are according to Fig. 10 (B) < Fig. 9 (B) < Fig. 1 (This paper size applies to China National Standard (CNS) A4 specifications (210X297 mm) -23- 554112 A7 B7 V. Description of the invention (2) B) Order of the drawings. Figure 9 (C), Figure 10 (C), Figure 11 (C) (Please read the precautions on the back before filling this page) The scale of the sewing method adjustment dial 20 shown at 4 points , Has a corresponding relationship. In Figs. 9 (C), 10 (C), and 11 (C), when comparing the height of the cam pressing portion 14 of the cam link 8, the height of the rotary table 2 The scales are all the same, but the order is No. 10 (C) diagram < No. 9 (C) diagram < No. 1 1 (C) diagram. Therefore, the spring force of the spring 4 for adjusting the tension of the wire and the tension of the wire follow the order of Fig. 10 (C) < Fig. 9 (C) < Fig. 11 (C). As described above, when adjusting the position of the adjustment shaft 3 5 by rotating the adjustment shaft 3 5 according to the use situation, the height position of the swing bracket part 30 which belongs to the swing center region of the first link 28 can be corrected upward and downward. Although the scales of the adjustment dial 20 of the sewing method all refer to the same place, the height of the cam pressing portion 14 of the cam link 8 can also be corrected, and the spring force of the spring 4 for wire tension adjustment can be corrected. As a result, The thread tension adjusting disc 3 a can be printed by the consumer property cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 3 b to maintain the thread holding force, that is, the thread tension is corrected. As shown in Fig. 3, from the front right side of the sewing machine, a sewing method adjusting dial 20, a wide adjusting dial 4 7 and a thread tension adjusting dial 19 are provided in this order. According to this embodiment, since the cam link 8 is a link, as shown in FIG. 1 and FIG. 2, it is formed by using a sheet material. Although it is a lightweight surface, the rigidity of the external force in the direction of its surface is quite rigid. high. The same applies to the first link 28 and the second link 29. In addition, in the case of a rod having a circular cross-section, in order to increase rigidity and suppress bending, it is necessary to increase the diameter, resulting in the disadvantage of a sharp increase in the weight of the rod. This paper size applies Chinese National Standard (CNS) A4 specification (210X297mm) -24-554112 A7 B7 V. Description of invention (2 sessions (please read the precautions on the back before filling this page) As explained above, follow this implementation For example, the cam pressing part 14 of the accompanying cam link 8 moves the dial cam 7 in one of the forward direction and the backward direction, so that the action part 6 and the swash plate cam 7 are adjusted toward the line to enhance the tension of the line. It moves in the direction of the spring force of the spring 4. In addition, the cam pressing portion 14 of the accompanying cam link 8 moves the swash plate cam 7 in the forward direction and the backward direction to make the action portion 6 and the inclined Disk cam 7—moves in the direction of weakening the spring force of the spring 4 for adjusting the tension of the wire. Therefore, unlike the conventional technology shown in Fig. 12, it is not necessary to use it without increasing the outer diameter. The curved long and long rod can adjust the spring force of the spring 4 for adjusting the wire tension with good accuracy. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, and according to this embodiment, the wire tension adjusting mechanism 2, Department has : Wire tension adjusting dial 19 having the function of a coarse adjustment operation unit that can relatively adjust the spring force of the wire tension adjusting spring 4 relatively; and relatively finely adjusting the spring force of the wire tension adjusting spring 4 The fine adjustment of the function of the operation part of the sewing method adjustment dial 20 is formed, in addition to operating the thread tension adjustment dial 19 coarse adjustment thread tension adjustment spring 4 strength of the spring strength, can not be adjusted by operating the sewing method dial 2 Finely adjust the strength of the spring force of the thread tension adjusting spring 4. Therefore, the thread tension can be effectively adjusted. In a word, when the thickness of the fabric to be sewn is changed considerably, it is necessary to change several pieces. When the fabric is stacked for sewing, etc., the thread tension adjustment dial 19 for coarse adjustment of the thread tension can be adjusted by turning the spring force of the spring 4 for adjusting the tension of the thread tension, so that the thickness of the fabric can be adjusted. When the cloth of the sewing object is changed from the same kind to the same kind, and the cloth is thinner, etc., because the thickness of the cloth does not change much, it is not necessary to use the rough paper size for China. Standard (CNS) A4 specification (210X297 mm) -25- 554112 A7 B7__ V. Description of the invention (2 $ (Please read the precautions on the back before filling this page) The thread tension adjustment dial 19 is called, and it is rotated by borrowing Operate the sewing force adjustment dial 20 of the thread tension micro-adjustment to perform the fine adjustment of the spring force of the tension adjustment spring 4. According to this embodiment, as described above, the operation of adjusting the dial 2 by the sewing method can be fine. Adjusts the strength of the spring force of the spring 4 for adjusting the thread tension, and the stitch adjustment dial 20 also serves as a stitch adjustment section that adjusts the stitch length of each stitch, so that the stitch length that can adapt to each stitch can be obtained Adjusting the spring force of the thread tension adjustment spring 4 exerts a fine adjustment. Therefore, as the stitch length of each stitch becomes longer, the elastic deformation of the thread tension adjustment spring 4 can be increased to increase the tension of the thread. When the stitch length of each stitch is shorter, the amount of elastic deformation of the thread tension adjusting spring 4 can be reduced and the thread tension can be reduced, which is beneficial to the sewing process. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs as shown in Figures 3 and 8, in order to be able to turn the operating thread tension adjustment turn 'wet 19, width adjustment turntable 4 7, sewing method adjustment turntable 20, etc. It is partially exposed from above the package outer plate 18. As described above, when the thread tension adjusting dial 19 and the seam adjusting dial 20 are rotated, the height of the cam pressing portion 14 to which the cam link 8 belongs can be adjusted, and the spring 4 of the thread tension adjusting spring 4 can be adjusted. The magnitude of the spring force, as a result, because the wire tension can be adjusted, Y does not need to remove the package outer plate 18. As described above, in order to be able to turn the operating thread tension adjusting dial 19, the width adjusting dial 47, and the seam adjusting dial 20, the parts are exposed from the upper surface 18 of the package outer plate 18. Therefore, if you want to set the thread tension adjustment dial 1 9 and the width adjustment dial 4 7 in the internal structure of the sewing machine, the swing adjustment disk 2 will be equipped with a swing in the space of the turntable. This paper is in accordance with Chinese national standards. (CNS) A4 specification (210X297 mm) '--26-554112 A7 B7 V. Description of the invention (24 (Please read the precautions on the back before filling this page) The structural accessories such as the link mechanism 9 have their own Restriction. If the cam link 8 for causing the swash plate cam 7 to act according to this embodiment is arranged along the vertical direction as shown in FIG. 1, the cam pressing portion 1 4 is provided at its upper end. And it moves from the bottom to the top. It also has a tension adjusting dial 1 9 'width adjusting dial 4 7 and a swing link mechanism 9 below the stitch adjusting dial 2 0 as a second link 2 at the front end of the swing link mechanism 9 The other end portion 2 9 c of 9 is connected to the other end portion 8 c which is the lower end of the cam link 8, so that the cam link 8, the second link 2 9, and the first link 2 8 are approximately L. The shape of the letter. Therefore, it is possible to suppress the cam link 8, the second link 2 9 and the first link 2. 8 interferes with the above-mentioned turntable arrangement space. In addition, the present invention is not limited to the foregoing embodiments shown in the drawings, and the implementer can be appropriately changed without departing from the gist. It is described in the examples Although a part of the sentence can be recorded in the scope of each application. 〈Effects of the invention〉 When the employee consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints a sewing machine according to the present invention, the thread tension adjusting mechanism may optionally include: a base portion ; And a swash plate cam provided on the base portion so as to move freely in a direction in which the spring force of the wire tension adjustment spring can be increased or decreased; and a swash plate cam provided on the operation portion at a position facing away from the spring for wire tension adjustment ; And a cam link including a cam pressing portion provided in a manner that can move forward and backward of the swash plate cam in a direction that intersects with the direction of the spring force of the spring for adjusting the tension of the wire; and It is an operating part that makes the cam link operate in an indirect way. According to the paper size of the sewing machine according to the invention, the Chinese national standard (CNS) A4 is applied. Grid (21〇X297 mm)-"-27- 554112 A7 B7 V. Description of the invention (including 2 (please read the precautions on the back before filling this page)" by pressing the correct cam of the cam link The inserting direction of the swash plate cam and the cam pressing part of the cam link can move the swash plate cam forward and backward to adjust the strength of the spring force of the thread tension adjusting spring. When the sewing machine according to the present invention is used, Since the swash plate cam is provided at the position facing away from the spring for adjusting the line tension, it is particularly advantageous to arrange the swash plate cam as close as possible to the spring for adjusting the line tension. Therefore, it is away from the swash plate cam and the spring for adjusting the line tension. The previous technology is different. When it is desired to transmit the operating force of the swash plate cam to the spring for adjusting the thread tension, it is not necessary to use a long rod. This eliminates the disadvantages of longer rods that do not limit the spring force adjustment accuracy of the wire tension adjustment spring, although the length is long but the amount of bending is large. Therefore, it is advantageous to adjust the strength of the spring force of the spring for adjusting the thread tension with good accuracy. < Brief Description of Drawings > Fig. 1 is a front view showing an internal structure. Fig. 2 is a top plan view showing the internal structure. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. Figure 3 is a front view showing the vicinity of the outer casing of the sewing machine package. Fig. 4 is an exploded perspective view showing a main part of the thread tension adjusting mechanism. Fig. 5 is an exploded perspective view of a swing portion to which a first link of a swing link mechanism belongs. Fig. 6 is a sectional view taken along line W 6-W 6 in Fig. 1. Fig. 7 is an operation explanatory diagram showing the operation of the adjustment shaft. This paper size is in accordance with Chinese National Standard (CNS) A4 specification (210X 297 mm) -28- 554112 A7 B7 V. Description of the invention (2 and Figure 8 are the front view of the whole sewing machine. (Please read the precautions on the back first) (Fill in this page again.) Figure 9 shows the operation when the height position of the first shaft core of the first shaft of the adjustment shaft and the second shaft core of the second shaft are the same. Figure 10 is the second position of the adjustment shaft. The operation explanatory diagram of the second shaft core of the shaft at a position higher than the first shaft core of the first shaft. The first 11 drawings are when the second shaft core of the second shaft of the adjustment shaft is located above the first shaft core of the first shaft. Figure 1 illustrates the operation when the shaft is in the low position. Figures 12 and 2 show the structure related to the conventional technology. ≪ Illustration of drawing number > 2 Wire tension adjustment mechanism 3 a, 3 b Wire tension adjustment disc 4 Spring for adjusting thread tension 5 Base part 6 Acting part 7 Swash plate cam Printed by the Intellectual Property Office of the Intellectual Property Office Employees' Cooperatives 8 Cam link 9 Swing link 10 Cam limiter 14 Cam pressing part 15 Cam link 18 Package outer plate 19 Thread tension adjustment dial (coarse adjustment operation section) The paper size is applicable to Chinese national standards ( CNS) A4 size (210X297 mm) -29-
經濟部智慧財產局員工消費合作社印製 554112 A7 B7 五、發明説明（2》 縫法調節轉盤（操作部，細調節操作部） 擺動連桿機構 調節軸（調節部） 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁)Printed by the Employees ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 554112 A7 B7 V. Description of the invention (2) Sewing method adjustment dial (operation section, fine adjustment operation section) Swing link mechanism adjustment shaft (adjustment section) This paper size applies Chinese national standards (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page)
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