1224636 五、發明説明 技術領域 本發明涉及一種可將固定缝劫针用的針夹部件進 換的縫紉機。 背景技術 第12圖是表示過去的平式連鎖縫缝匆機!的缝匆針的 周邊結構的立體圖。平式連鎖缝軸機機底板6上 水平安裝有挺針板5,與挺針板5相對設有多根，在這裏爲3 根缝勿針4。缝匆針4被固定在針夾部件3上，針夾部件3被 固=在垂直設置的針杆2的下端。針杆2的上部與曲轴^(參 照第14圖）相連接’通過曲轴66的轉動使得針杆2可進行上 下方向的往返運動，且縫初針4穿插於挺針板5的錯聊孔9 内。挺針板5的上面設有按壓布料的按壓部件（圖略）。挺針 板5的下面設有彎針8，在縫紉針4上下往返運動的同時彎針 8沿左右方向X擺動縫製。 參照第13圖對縫製操作加以說明。將各縫紉針4分別穿 好縫紉針線10,在彎針8上也穿好彎針線11。當縫鲂針4上 升時，各缝紉針4上的縫紉線形成線圈。彎針8以穿過所有 縫紉針線圈的狀態擺動。第13Α圖表示的是彎針8穿過縫鲂 針線圈時的正視圖，第13Β圖是其左侧視圖。由該圖可知， 彎針8在通過縫紉針4正後方時捕捉到縫紉針線圈。彎針8 若與縫紉針4發生錯位，就不能捕捉到縫紉針線圈，則會發 生跳線這樣的縫紉缺陷。 另一方面，平式連鎖缝縫紉機中，可以使用1至4根縫 匆針，必須根據缝紉的内容來改變所需使用的缝紉針數 本紙張尺度適用中國國家標準Α4規格（2】〇χ297公贊）1224636 V. DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to a sewing machine capable of replacing a needle clamp member for fixing a sewing needle. Background Art Fig. 12 is a perspective view showing a peripheral structure of a sewing needle of a conventional flat chain sewing machine! On the bottom plate 6 of the flat chain sewing machine, a needle lifter plate 5 is installed horizontally, and a plurality of needle lifter plates 5 are arranged opposite to the needle lifter plate 5. Here, three stitches 4 are not needed. The sewing needle 4 is fixed to the needle clamp member 3, and the needle clamp member 3 is fixed to the lower end of the needle bar 2 which is vertically arranged. The upper part of the needle bar 2 is connected to the crankshaft ^ (refer to FIG. 14). The rotation of the crankshaft 66 enables the needle bar 2 to move up and down in the up and down direction, and the initial stitch 4 is inserted into the wrong chat hole 9 of the needle lifter 5. Inside. The upper surface of the needle lifter plate 5 is provided with a pressing member (not shown) for pressing the cloth. A looper 8 is provided on the lower surface of the needle lifter plate 5, and the looper 8 is swung and sewed in the left-right direction X while the sewing needle 4 moves up and down. The sewing operation will be described with reference to FIG. 13. Thread each sewing needle 4 through sewing needle thread 10, and looper thread 11 through looper 8. When the sewing needle 4 is raised, the sewing thread on each sewing needle 4 forms a loop. The looper 8 swings in a state where it passes through all the stitch loops. FIG. 13A is a front view of the looper 8 when it passes through the loop of the quilting needle, and FIG. 13B is a left side view thereof. As can be seen from the figure, the looper 8 catches the stitch loop when passing through the stitch 4 directly behind. If the looper 8 is misaligned with the sewing needle 4, the stitch loop cannot be caught and a sewing defect such as a jumper will occur. On the other hand, in the flat chain sewing machine, 1 to 4 stitches can be used, and the number of sewing needles required must be changed according to the content of the sewing. The paper size applies the Chinese national standard A4 specification (2). awesome)
訂| (請先閲讀背面之注意事項再填寫本頁) 五 發明説明（ 量。也就是’根據所要使料縫㈣數 拫縫紉針用的針夾邻 來丰備所謂的— 針夹部針用的針夹部件這樣的 件3-起更換 變化時’將多根縫匆針與針夹部 況而且平式連鎖縫縫匆機甲’在改變針距（，—力的产 針距二的情況二，針距(從左針距中心至： 針夾部件3的更換。6随改^狀4職時。這時也要進行 内置料料3时財㈣分解立體圖。在 2置，機機殼7中的上轴65的前端部上固定有二 軸65^ 連接有可自如轉動的針杆連杆17,當使上 疋轉且曲軸66也旋轉時，則針杆連杆Η上下往返運 。在針杆連杆π前端的通孔17Α中連接有針杆握持部 。針杆2穿過針杆握持部18的通孔似，從縫匆機機殼7 的下面向下突出，在其大致十央部被固定螺紋部件19固定 十杆握持D(U 8。因此，通過使上轴65旋轉，可使針杆2 垂直的上下往返運動。 多根縫勿針4從針夾部件3下方穿過，並由縫㈣固定 螺紋部件15分別，。在針夾部件3上部形成有與其爲一個 整體的螺紋軸16。而且，針杆2爲中空結構，下端部形成有 陰螺紋。且通過將針夾部件3的螺紋軸16螺接於針杆的下端 部，而使針杆2與針夾部件3固定。因此，當更換針夾部件3 時，旋轉針夾部件3使其從針杆下端部被取下，然後將新的 針夾部件3的螺紋軸16插入針杆2下端部的陰螺紋中，並旋 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐）(Please read the precautions on the back before filling this page) Five invention descriptions (Quantity. It means' according to the number of materials to be sewn, the needle holder for sewing needles is next to the so-called — for needle holder needles Needle clip parts such as 3--changes when changing 'sew multiple stitches and needle clips and flat interlock stitching machine' in changing stitch pitch (,-force production stitch pitch II case II Needle pitch (from the center of the left stitching to: the replacement of the needle clamp part 3. 6 changes as the position changes 4 positions. At this time, it is also necessary to carry out the built-in material 3 when the financial exploded perspective view. In 2 sets, the machine case 7 A second shaft 65 is fixed to the front end of the upper shaft 65 of the upper shaft 65. A freely rotatable needle bar link 17 is connected. When the upper shaft is rotated and the crank shaft 66 is also rotated, the needle bar link Η is moved up and down. A needle bar holding portion is connected to the through hole 17A at the front end of the rod link π. The needle bar 2 passes through the through hole of the needle bar holding portion 18, and protrudes downward from the underside of the sewing machine case 7, and is roughly The ten center portion is fixed to the ten-rod holding D (U 8 by the fixing thread member 19). Therefore, by rotating the upper shaft 65, the needle bar 2 can be vertically moved back and forth. A plurality of sewing needles 4 pass under the needle clamp member 3, and the thread members 15 are respectively fixed by the stitches. A threaded shaft 16 is formed integrally with the upper part of the needle clamp member 3. The needle bar 2 is hollow. Structure, the lower end is formed with a female thread. The screw shaft 16 of the needle clamp member 3 is screwed to the lower end of the needle bar, so that the needle bar 2 and the needle clamp member 3 are fixed. Therefore, when the needle clamp member 3 is replaced , Rotate the needle clamp part 3 to remove it from the lower end of the needle bar, and then insert the new thread shaft 16 of the new needle clamp part 3 into the female thread at the lower end of the needle bar 2 CNS) A4 size (210X297 mm)
(請先閲讀背面、一 之注意事項再填寫本頁) 1224636 A7 B7 五、發明説明（ 轉擰入以使其固定。 这時’爲了使針杆2的上述陰螺紋與針夹部件场螺故 轴16相連接，在完成螺紋部件的連接後，不能確定針夹部 件3是以何角度被固定的。也就是說，由於針夾部件3鱼針 杆2是通過以針杆2的軸線u爲中心的螺紋部件來固定 的，因此最終的擰入固定的位置是根據操作者施加的扭轉 力而不同的’就是說不能確^在軸線L1圓周方向被定位的 位置。 第15圖是表示錯腳孔9與縫紉針4位置關係的俯視圖。 如上所述，若沒有將各縫紉針4在正確的位置定位就會産生 跳線。因此，如第15B圖所示，必須以使各缝紉針4在其對 應的錯腳孔9的中央正確下落的狀態定位針夾部件3。 3根缝紉針用的針夾部件的情況，由於中央的缝紉針與 針杆2的軸線L1重合，又因爲針夾部件3的螺紋部件的擰入 力，含有表示3根縫紉針4的位置關係的3根縫紉針4的軸線 的假想平面36，如第15A圖所示向右上傾斜，如第15c圖向 右下傾斜。因此，將針夾部件3固定於針杆2後，必須對針 夾部件3在針杆2的軸線圓周方向的位置進行調整。 如第14圖所示縫紉機殼7的前端面設有機頭蓋12。在該 機頭蓋12在與針杆握持部18的上述固定螺紋部件丨9相對設 的位置，形成通孔13。該通孔13—般由塞子14塞住。在更 換針爽部件3時拔出塞子14。而且，將新的針夾部件3擰入 針杆2固定以後，將螺絲刀插入通孔13鬆動固定螺紋部件 19，按照第15B圖所示的位置使針杆2旋轉，在軸線L1圓周 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) 、一-T— 定螺::::立。而且，运要調整缝匆針4的高度位置，在固 ㈣⑷9鬆動的狀態下，使針杆2沿軸線U方向上下 這樣將針夹部件3正確定位後，擰㈣紋 而使針杆2固定。最後將塞子14 3的更換操作。 入軌13,4針夾部件 ’卸下針杆2的固定螺 向的位置以及軸線L1 存在針夾部件更換操 這樣的針夾部件3的更換操作中 紋°卩件19，對針杆2的軸線L1圓周方 方向的位置進行調整校正非常繁雜， 作效率低下的問題。 而且，對針杆2的位置調整，是從形成於機頭蓋12的通 孔13插人縣刀對目㈣紋部件咐行鬆動。料 從通孔13插入的螺絲刀前端，嵌入固定螺紋部件19的螺針 頭槽中比較困難。由此也使得針夹部件3的更換操作變得繁 發明内容 本發明的目的在於提供一種縫匆機，在針央部件更換 操作時’不用進行例如必須調整針杆高度和挺針板的錯腳 孔相對位置這樣的操作，或使其^簡單易行，從而使得針 夾部件的更換操作變得容易。 本發明提供-種縫匆機，具有用於固定縫匆針的針夹 牛’及可在該針央部件的前端部被裝卸固定的針杆，其 特徵在於：還設有止轉部件，其可阻止上述針夾部件在針 杆軸線圓周方向上的旋轉，並使其定位於預定位置。 若爲本發明，則設有止轉部件，其可使針夾部件在針 于的，線圓周方向的預定位置進行定位。π，由於通過該 轉。Ρ件’可將針夾部件定位於針杆軸線圓周方向的正確 ^ 口此，不必同已知技術那樣，在更換針夹部件時必 須進行針杆的位置調整校正，則可以使針夾部件的交 作谷易進行。 、 、如上所述的本發明，其特徵在於：上述的止轉部件設 於針杆’且具有财敎孔定㈣件、及螺接於上述定2 部件的螺紋孔巾的針夾固定螺紋部件，且在上述針夹部件 上形成有-平面’該平面與螺接的上述針夹固定螺紋部件 的端面相接。 若爲本發明，通過與螺紋部件在針杆的定位部件的螺 接，且使針夾部件與螺紋部件的端面相接，可使針夹部件 被止轉。這樣，以簡單的構成，即可使針夹部件被確實的 止轉，並被固定於預定位置。 如上所述的本發明，其特徵爲：上述的止轉部件，其 可將針夾部件的固定位置在針杆的軸線方向進㈣整。〃 若爲本發明，由於可將針夾部件在針杆軸線方向上進 行調整’因此在更換針夾部件時’可在針杆固定的狀態下， 對針夾部件的高度位置進行調整。 如上所述的本發明，其特徵在於：上述的止轉部件’ 具有設於針杆且設有螺紋孔的定位部件、及螺接於上述定 位部件的螺紋孔的針夹固定螺紋部件，該針夹部件上形成 有凹部，其可將螺接的上述針夹固定螺紋部件的前 五 發明説明 若爲本發明’則通過將螺接於針杆的定位 =紋部件的前端嵌入上述針夹部件的凹部，： 針夾部件確實的被止轉。 I』使 如上所述的本發明’其特徵在於：上述的止轉部件， 八有設於針杆且設有賴孔的定位部件、及螺接於上 ::件:螺紋孔且前端部與針央部件相接的針央固定螺紋 針夾部件钱㈣針杆軸線圓周方向及軸線方向 、思位置，亚被上述針夾固定螺紋部件固定於上述位置。 若爲本發明，則可將針夾部件定位固定於針杆軸線圓 周方向及軸線方向的任意位置。因此，在更換針夾部件時' 不必對針杆的位置進行調整校正，只調整針夹部件即可 如上所述的本發明，其特徵在於：上述的定位 與針杆分體設置的部件。 Μ 若爲本發明，由於定位部件與針杆爲分體設置，則與 將定位部件與針杆整體成型切削這樣的製造方法相比，掣 造成本較低。 附圖的簡要說明 第1圖表示第1實施例的分解立體圖。 圖 第2圖表示針杆20和針夾部件21的連接部的縱切剖 面 直角 第3圖表示針杆20和針夾部件21的連接部的車由切 剖面圖。 第4圖表示第2圖的一部分的放大剖面圖。 第5圖表示由第4圖的切斷面即線V—V看去的剖面图 1224636 A7 __ B7 " ----—-------- 五、發明説明（7 ) 第6圖表示第2實施例的分解立體圖。 第7圖表示針杆20和針夾部件41的連接部的縱切剖面 圖。 第8圖表示針杆20和針夾部件41的連接部的軸切直角 剖面圖。 第9圖表示第3實施例的分解立體圖。 第10圖表示針杆2 0和針夾部件5 〇的連接部的縱切剖面 圖。 第11圖表示第4實施例的分解立體圖。 第12圖表示平式連鎖縫縫紉機丨的縫紉針附近結構的 立體圖。 第13圖中第13A圖表示彎針8穿過缝紉針線圈時的正 視圖，第13B圖表示其左侧視圖。 第14圖表示過去的針杆2和針夾部件3的連接狀態的分 解立體圖。 第15圖表示錯腳孔9和縫紉針4的位置關係的俯視圖。 實施方式 參照第1圖至第5圖對本發明的第丨實施例進行說明。且 本叙明的縫初機中，針杆和針央部件的連接部以外的、名士 構，與在第12圖至第15圖中說明的過去的平式連鎖縫縫紉 機1相同，與第12圖至第15圖各附圖相關的圖面說明，在這 裏的第1實施例中沿用。 第1圖表示本實施例的針杆20與針夾部件2丨的分解立 體圖，第2圖表示針杆20和針夾部件21的連接部的縱切剖面 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） 10 (請先閱讀背面之注意事項再填寫本頁)(Please read the precautions on the back and fill in this page first) 1224636 A7 B7 V. Description of the invention (Turn in to fix it. At this time, 'to make the above female thread of the needle bar 2 and the needle clamp component field screw The shaft 16 is connected. After the connection of the threaded member is completed, the angle at which the needle clamp member 3 is fixed cannot be determined. That is, because the needle clamp member 3 is used, the needle shaft 2 is formed by using the axis u of the needle shaft 2 as The threaded part in the center is fixed, so the final screw-in position is different depending on the torsional force applied by the operator, that is, the position where it is positioned in the circumferential direction of the axis L1 cannot be determined. Figure 15 shows the wrong foot Top view of the positional relationship between the hole 9 and the sewing needle 4. As described above, if the sewing needles 4 are not positioned in the correct position, jumpers will be generated. Therefore, as shown in FIG. 15B, it is necessary to make the sewing needles 4 at Position the needle clamp member 3 in the state where the center of the corresponding misalignment hole 9 is correctly dropped. In the case of a needle clamp member for three sewing needles, the center needle coincides with the axis L1 of the needle bar 2 and the needle clamp member 3 threaded parts The imaginary plane 36 containing the axes of the three sewing needles 4 indicating the positional relationship of the three sewing needles 4 is inclined upward to the right as shown in FIG. 15A and downward to the right as shown in FIG. 15c. Therefore, the needle clamp member 3 After fixing to the needle bar 2, the position of the needle clamp member 3 in the circumferential direction of the axis of the needle bar 2 must be adjusted. As shown in FIG. 14, the front end surface of the sewing machine case 7 is provided with a head cover 12. The head cover 12 A through hole 13 is formed at the opposite position of the above-mentioned fixed threaded member 9 of the needle bar holding portion 18. The through hole 13 is generally plugged by a plug 14. When the needle cooler member 3 is replaced, the plug 14 is pulled out. After the new needle clamp member 3 is screwed into the needle bar 2 and fixed, insert a screwdriver into the through hole 13 to loosen the fixed threaded member 19, and rotate the needle bar 2 according to the position shown in FIG. 15B. Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page), one -T- set screw :::: stand. Also, adjust the height position of the sewing needle 4, In the state where the fixed pin 9 is loose, make the needle bar 2 up and down along the axis U After the needle clamp part 3 is correctly positioned, twist the pattern to fix the needle bar 2. Finally, replace the plug 14 3. Enter the rail 13,4 needle clamp part 'Remove the fixed screw position of the needle bar 2 and the axis L1 In the replacement operation of the needle clamp member 3 such as the needle clamp member 3, there is a problem that adjusting and correcting the position in the circumferential direction of the axis L1 of the needle bar 2 is complicated and inefficient. The adjustment of the position of the lever 2 is to insert the county knife and eye-patterned part from the through hole 13 formed in the head cover 12. The front end of the screwdriver inserted through the through hole 13 is inserted into the screw head groove of the fixed threaded part 19. It is more difficult. This also makes the replacement operation of the needle clamp part 3 complicated. SUMMARY OF THE INVENTION The object of the present invention is to provide a sewing machine that does not need to adjust, for example, the height of the needle bar and the needle lifter during the replacement operation of the central part of the needle. The operation of the relative position of the wrong foot hole makes it simple and easy, so that the replacement operation of the needle clamp component is easy. The invention provides a kind of sewing machine, which has a needle clamp for fixing a sewing needle, and a needle bar which can be detachably fixed at the front end of the central part of the needle. The needle clamp member can be prevented from rotating in the circumferential direction of the axis of the needle bar, and can be positioned at a predetermined position. According to the present invention, a rotation preventing member is provided, which can position the needle clamp member at a predetermined position in the circumferential direction of the needle. π due to passing this turn. The “P piece” can position the needle clamp component in the correct circumferential direction of the axis of the needle bar. Therefore, it is not necessary to adjust and correct the position of the needle bar when replacing the needle clip member as in the prior art. Handing over Gu Yi. The invention as described above is characterized in that the above-mentioned anti-rotation member is provided on the needle bar, and has a fixed hole fixing member, and a needle clip fixing screw member which is screwed to the threaded hole towel of the fixed 2 member. And a flat plane is formed on the needle clamp member, and the plane is in contact with the end surface of the screw clamp fixing screw member screwed on. According to the present invention, the needle clamp member can be prevented from rotating by being screwed to the positioning member of the thread member on the needle bar and the needle clamp member is brought into contact with the end surface of the thread member. Thus, with a simple structure, the needle clamp member can be reliably stopped and fixed at a predetermined position. The present invention as described above is characterized in that the above-mentioned rotation preventing member can adjust the fixed position of the needle clamp member in the axial direction of the needle bar. 〃 According to the present invention, since the needle clamp member can be adjusted in the direction of the axis of the needle bar ′, when the needle clamp member is replaced, the height position of the needle clip member can be adjusted while the needle bar is fixed. The present invention as described above is characterized in that the above-mentioned anti-rotation member 'has a positioning member provided in a needle bar and provided with a screw hole, and a needle clip fixing screw member screwed to the screw hole of the positioning member. The clip member is formed with a recessed portion, which can be used for screwing the above-mentioned needle clip to fix the threaded member. The first five inventions are described as the invention. Concavity: The needle clamp is securely stopped. I "makes the present invention as described above, characterized in that the above-mentioned anti-rotation member is provided with a positioning member provided on the needle bar and provided with a through hole, and is screwed to the :: piece: a threaded hole and the front end portion and the needle The central part of the needle is connected to the central part of the fixed threaded needle clamp part, and the shaft direction of the needle bar is in the circumferential direction, the axial direction, and the position. According to the present invention, the needle clamp member can be positioned and fixed at any position in the circumferential direction and axial direction of the axis of the needle bar. Therefore, when replacing the needle clamp member, it is not necessary to adjust and correct the position of the needle lever, and it is only necessary to adjust the needle clamp member. The present invention as described above is characterized in that the positioning and the needle lever are provided separately. In the case of the present invention, since the positioning member and the needle bar are separately provided, the cost is lower than that in a manufacturing method in which the positioning member and the needle bar are integrally formed and cut. Brief Description of the Drawings Fig. 1 shows an exploded perspective view of the first embodiment. Fig. 2 is a longitudinal sectional view of the connecting portion of the needle bar 20 and the needle clamp member 21 at right angles. FIG. 4 is an enlarged sectional view showing a part of FIG. 2. Fig. 5 shows a cross-sectional view taken from line V-V in the cut plane of Fig. 1224636 A7 __ B7 " ---------------- 5. Description of the invention (7) 6 The figure shows an exploded perspective view of the second embodiment. Fig. 7 is a longitudinal sectional view of a connection portion between the needle bar 20 and the needle clamp member 41. Fig. 8 is a right-angled cross-sectional view of the connecting portion of the needle bar 20 and the needle clamp member 41. Fig. 9 shows an exploded perspective view of the third embodiment. Fig. 10 is a longitudinal sectional view of a connection portion between the needle bar 20 and the needle clamp member 50. Fig. 11 shows an exploded perspective view of the fourth embodiment. Fig. 12 is a perspective view showing a structure near a sewing needle of the flat chain sewing machine. FIG. 13A is a front view when the looper 8 passes through the stitch loop, and FIG. 13B is a left side view thereof. Fig. 14 is an exploded perspective view showing the connection state between the conventional needle bar 2 and the needle clamp member 3. Figs. Fig. 15 is a plan view showing the positional relationship between the foot-off hole 9 and the sewing needle 4. Embodiments A first embodiment of the present invention will be described with reference to FIGS. 1 to 5. In addition, in the initial sewing machine described in this description, other than the connection part of the needle bar and the central part of the needle, the structure of a famous person is the same as the conventional flat-type interlock sewing machine 1 described with reference to Figs. Explanations of the drawings related to each of the drawings from FIG. 15 to FIG. 15 are used in the first embodiment here. FIG. 1 shows an exploded perspective view of the needle bar 20 and the needle clamp member 2 in this embodiment, and FIG. 2 shows a longitudinal section of a connection portion between the needle bar 20 and the needle clamp member 21. The paper dimensions are in accordance with Chinese National Standards (CNS). A4 specification (210X297mm) 10 (Please read the precautions on the back before filling this page)
1224636 A7 r—------— 67 ___ 五、發明説明（8 ) —--- ffi’第3圖表示針杆2G和針夹部件21的連接部的軸切直角气 面圖，第4圖表示第2圖的一部分的放大剖面圖，第5圖表: 由第4圖的切斷面即線V—V看去的剖面圖，該第5圖爲第3 圖的放大剖面圖，參照第丨圖至第5圖對第〗實施例進行說1224636 A7 r ----------- 67 ___ V. Description of the invention (8) ----- ffi 'Figure 3 shows the shaft cut right angle air surface view of the connecting part of the needle bar 2G and the needle clamp member 21, section Fig. 4 is an enlarged sectional view of a part of Fig. 2, and Fig. 5 is a cross-sectional view viewed from the line V-V, which is a cut surface of Fig. 4, which is an enlarged cross-sectional view of Fig. 3. Figures 丨 to 5 describe the first embodiment
明。 W 針杆20與針夾部件21通過定位部件22及針夾固定螺紋 部件24來固定。針夾20爲中空軸，在下端部外周的一部分 上形成有平面28，在此穿過上述針夾固定螺紋部件24的通 孔28a在半徑方向穿通形成。 定位部件22爲環狀部件，其内徑與針杆2〇的外徑大體 相等，其外周的一部分上半徑方向形成有向外突出的凸部 31，且在此形成半徑方向的螺紋孔29。 針夾部件21中，固定縫紉針23的縫紉針固定部3〇，與 插入中空的針杆2〇的插入軸26形成一個整體。下部的縫紉 針固定部30,平行的形成多根這裏是3根缝紉針插入孔，可 刀別插入縫紉針23，並通過缝紉針固定螺紋部件25，使其 刀別獨立固疋。縫紉針固定部3〇的上部設有與被固定的縫 紉針23相平行的延伸的插入軸26。插入軸26具有與針杆下 端部的内徑大致相等的外徑，並被插入針杆2〇的下端部的 中心孔20a中。在該插入軸26上形成有平面27。 下面說明針夾部件21安裝於針杆2〇的方法。 首先將定位部件22安裝於針杆20的下端部。這時以將 針杆20的通孔28a同定位部件22的螺紋孔29相對設的狀態 進行疋位。接著’將針夾部件21的插入軸％從針杆20的下 國家標準(⑽A4規格⑵〇χ297公釐) Γη .~~"Bright. The W needle bar 20 and the needle clamp member 21 are fixed by a positioning member 22 and a needle clamp fixing screw member 24. The needle clamp 20 is a hollow shaft, and a flat surface 28 is formed on a part of the outer periphery of the lower end portion, and a through hole 28a passing through the needle clamp fixing screw member 24 is formed in the radial direction. The positioning member 22 is a ring-shaped member having an inner diameter substantially equal to the outer diameter of the needle bar 20, and a convex portion 31 protruding outward is formed in a radial direction on a part of an outer periphery thereof, and a threaded hole 29 in a radial direction is formed here. In the needle clamp member 21, the sewing needle fixing portion 30 for fixing the sewing needle 23 is integrally formed with the insertion shaft 26 into which the hollow needle bar 20 is inserted. The lower sewing needle fixing portion 30 is formed in parallel with a plurality of three sewing needle insertion holes. A knife can be inserted into the sewing needle 23, and the threaded member 25 is fixed by the sewing needle so that the knife is independently fixed. An upper portion of the sewing needle fixing portion 30 is provided with an insertion shaft 26 extending in parallel with the fixed sewing needle 23. The insertion shaft 26 has an outer diameter substantially equal to the inner diameter of the lower end portion of the needle bar, and is inserted into a center hole 20a at the lower end portion of the needle bar 20. A plane 27 is formed on the insertion shaft 26. A method of attaching the needle clamp member 21 to the needle bar 20 will be described below. First, the positioning member 22 is attached to the lower end portion of the needle bar 20. At this time, the positioning is performed in a state where the through hole 28a of the needle bar 20 is opposed to the screw hole 29 of the positioning member 22. Next, 'the insertion shaft% of the needle clamp member 21 is lowered from the lower national standard of the needle bar 20 (⑽A4 specification⑵〇χ297mm) Γη. ~~ "
2-Τ— f請先閱讀背面之注意事項再填寫本頁) 1224636 A7 ' ~ --——---_______ 五、發明説明（9 ) 端部插入。這時，插入軸26的平面27位於與定位部件22的 螺紋孔29相對設的位置，並被插入。而且，針夾固定螺紋 部件24螺接於定位部件22的螺紋孔29中。因此，針夾固定 用螺紋部件24通過針杆2〇的螺紋通孔28a與針夾部件21的 插入軸26的平面27相接。 針夾固定螺紋部件24如第2、3圖所示，其前端面33形 成有與針夾固定螺紋部件24的軸線相垂直的平面。而且針 夾部件21的插入軸26的平面27與插入軸26的軸線平行。因 此’若將針夾固定螺紋部件24擰入，以將前端面33與針夾 部件21的平面27相接觸的狀態，來定位針夾部件3。這樣， 針夾部件21在針杆20的軸線L1圓周方向被止轉，且將其定 位於軸線L1圓周預定的位置。 而且’如第2圖所示，在針夾部件21的插入軸26上，形 成有與平面27的上端垂直連接的上端面34、以及與下端相 連接的下端面35。而且，該上端面34與下端面35之間的間 隔與針夾固定螺紋部件24的端部的外徑33a大致相等。即， 若使針夾固定螺紋部件24被螺接，針夾固定螺紋部件24的 前端部被夾在插入軸26的上下端面之間。也就是，由此被 定位於針夾部件21、針杆2〇的軸線方向的位置。 而且’將針夾部件21插入針杆2〇的情況下，當針杆2〇 的下端面20a與針夾部件21的缝紉針固定部3〇的上端面32 相接時，針杆20的螺紋通孔28a正好被定位於與插入軸％ 的平面27相對設的位置。因此，當插入針夾固定螺紋部件 24時，針夾固定螺紋部件24的前端部正好嵌入插入軸^的 本紙張尺度適用中國國家標準（0^) A4規格（21〇><297公釐） 12 (請先閱讀背面之注意事項再填寫本頁) .、τ. 1224636 A7 I—---------_ B7_______ 五、發明説明（10 ) 上下端面34、35之間。 如此，將針夾部件2i插入針杆2〇，通過使針失固定螺 &部件24的擰人，可以將其定位於針杆2()的軸線Li圓周方 向及軸線L1方向的預定位置。因此，預先將針杆2〇正確定 位於軸線L1圓周方向及軸線方向的位置，且固定於針杆握 持部18，由此也可以在更換針夾部件21的情況下，被正確 定位於與上次相同的位置。也就是，在更換針夾部件21的 情況下，不必調整校正針杆20，只需進行針夾部件21的更 換，因而可使針夾部件21的更換操作的效率提高。 進一步敍述結構。 在針杆20的下端部46上，形成有與針杆2〇的第丨軸線 L1同軸的中心孔2〇a，和具有與針杆2〇的第1軸線L1相垂直 的第2軸線L2的通孔28a。針夾部件21具有可自由插拔於上 述中心空20a的插入軸26,插入軸26具有與假想平面36相平 行的第4軸線L4，上述假想平面36共同的包含有被固定的 縫勿針23的各個第3軸線L3，在將插入軸26插在中心孔2〇a 中的插接狀態下，第1及第4軸線LI、L4在同一直線上，在 插入軸26的外周部，以插入軸26的上述插接狀態下，形成 有與上述通孔28a相對應的第1定位面27、44。定位部件22 设於針板20的下端部46上，在包含通孔28a的第2軸線L2的 一直線上，具有刻設成具有第5軸線L5的陰螺紋的螺紋孔 I 29 〇 固定螺紋部件24，具有螺合於上述螺紋孔29的具有陽 螺紋的陽螺紋部37、以及定位凸部38、39,該定位凸部38、 本紙張尺度適用中國國家標準（CNS) A4規格⑵0X297公爱） -13 - (請先閱讀背面之注意事項再填寫本頁)2-Τ— f Please read the precautions on the back before filling this page) 1224636 A7 '~ --——---_______ 5. Description of the invention (9) Insert the end. At this time, the plane 27 of the insertion shaft 26 is positioned opposite to the screw hole 29 of the positioning member 22, and is inserted. Further, the needle clamp fixing screw member 24 is screwed into the screw hole 29 of the positioning member 22. Therefore, the threaded member 24 for fixing the needle clamp is in contact with the plane 27 of the insertion shaft 26 of the needle clamp member 21 through the threaded through hole 28a of the needle bar 20. As shown in Figs. 2 and 3, the needle clamp fixing screw member 24 has a front end surface 33 formed on a plane perpendicular to the axis of the needle clamp fixing screw member 24. The plane 27 of the insertion shaft 26 of the needle clamp member 21 is parallel to the axis of the insertion shaft 26. Therefore, if the needle clamp fixing screw member 24 is screwed in, the needle clamp member 3 is positioned with the front end surface 33 in contact with the flat surface 27 of the needle clamp member 21. In this way, the needle clamp member 21 is stopped in the circumferential direction of the axis L1 of the needle bar 20, and is positioned at a predetermined position on the circumference of the axis L1. As shown in Fig. 2, the insertion shaft 26 of the needle clamp member 21 is formed with an upper end surface 34 connected perpendicularly to the upper end of the flat surface 27 and a lower end surface 35 connected to the lower end. The interval between the upper end surface 34 and the lower end surface 35 is substantially equal to the outer diameter 33a of the end portion of the needle clamp fixing screw member 24. That is, when the needle clamp fixing screw member 24 is screwed, the front end portion of the needle clamp fixing screw member 24 is sandwiched between the upper and lower end faces of the insertion shaft 26. In other words, the needle clamp member 21 and the needle bar 20 are positioned in the axial direction. Further, when the needle clamp member 21 is inserted into the needle bar 20, when the lower end surface 20a of the needle bar 20 is in contact with the upper end surface 32 of the sewing needle fixing portion 30 of the needle clamp member 21, the thread of the needle bar 20 The through hole 28a is positioned exactly opposite the plane 27 of the insertion axis%. Therefore, when inserting the needle clamp fixing threaded member 24, the front end portion of the needle clamp fixing threaded member 24 fits into the insertion shaft ^ This paper size is applicable to the Chinese national standard (0 ^) A4 specification (21〇 > < 297 mm) ) 12 (Please read the precautions on the back before filling in this page). Τ. 1224636 A7 I —--------_ B7_______ V. Description of the invention (10) Between the upper and lower end faces 34 and 35. In this way, the needle clamp member 2i is inserted into the needle bar 20, and the needle can be positioned at predetermined positions in the circumferential direction of the axis Li and the axis L1 of the needle bar 2 () by loosening the screw of the fixing screw & member 24. Therefore, the needle bar 20 is correctly positioned in the circumferential direction and the axial direction of the axis L1 in advance, and fixed to the needle bar holding portion 18, so that the needle bar 20 can be accurately positioned at the same time as the needle clamp member 21 is replaced. Last same location. That is, in the case of replacing the needle clamp member 21, it is not necessary to adjust the correction needle bar 20, and only the replacement of the needle clamp member 21 is required, so that the efficiency of the replacement operation of the needle clamp member 21 can be improved. The structure is further described. In the lower end portion 46 of the needle bar 20, a center hole 20a coaxial with the first axis L1 of the needle bar 20 and a second axis L2 perpendicular to the first axis L1 of the needle bar 20 are formed. Through hole 28a. The needle clamp member 21 has an insertion shaft 26 that can be freely inserted into the central space 20a. The insertion shaft 26 has a fourth axis L4 parallel to the virtual plane 36. The virtual plane 36 includes a fixed needle 23 in common. When the insertion axis 26 is inserted into the center hole 20a of each of the third axis L3, the first and fourth axes L1 and L4 are aligned on the outer periphery of the insertion axis 26 to be inserted. In the inserted state of the shaft 26, first positioning surfaces 27, 44 corresponding to the through holes 28a are formed. The positioning member 22 is provided on the lower end portion 46 of the throat plate 20, and has a threaded hole I 29 engraved with a female thread having a fifth axis L5 on a straight line including the second axis L2 of the through hole 28a. The fixed threaded member 24 , Having a male screw portion 37 with a male thread screwed into the above-mentioned screw hole 29, and positioning projections 38, 39, the positioning projection 38, this paper size applies Chinese National Standard (CNS) A4 specifications (0X297 public love)- 13-(Please read the notes on the back before filling this page)
1224636 A7 ____B7 五、發明説明（11 ) 39沿陽螺紋部37的第6軸線L6突出延伸，並穿過通孔28a， 且具有與上述插入軸26的上述第1定位面27、44相接的第2 定位面33 ' 43，該第2定位面33、43可防止針杆20與插入軸 26在第1和第4軸線LI、L4方向的錯位，還可防止第1及第4 軸線LI、L4的圓周方向的相互的角度錯位。 插入軸26的第1定位面27爲一平面，其與含有插入軸26 的弟4軸線L4的假想平面相平行，固定螺紋部件24的第2定 位面33也是一平面，其與固定螺紋部件24的陽螺紋部37的 第6軸線L6相垂直。 疋位部件22具有，被針杆20穿過的環狀部45，及與該 環狀部45相連的凸部3 1，該凸部31上刻設有上述螺紋孔29。 使針杆20的下端面20b與針夾部件21的上端面32處於 相接的狀悲，以使通孔28a與插入軸26的第1定位面27的上 下位置相對應。 接著，參照第6圖至第8圖對本發明的第2實施例進行說 明。本實施例中，由於只對第丨實施例的針夾固定螺紋部件 24及針夾部件21有所變更，所以因除此以外的結構相同說 明從略。 本貫施例的針夾固定螺紋部件4〇，其前端部43不是平 面，而是圓錐狀的凸起。而且，在針夾部件41的插入軸42 的側部，形成有用於使圓錐狀針夾固定螺紋部件的前端 部嵌入的圓錐狀的凹部44。當插入軸插入針杆2〇，且針杆 2〇的下端面與針夾部件41的縫紉針固定部3〇上端32相接 時，該凹部44被形成於與針杆20的螺紋通孔28a相對應的位 本紙張尺度適用中國國家標準（CNS) A4規格（2]〇><297公楚） 14 (請先閲讀背面之注意事項再填寫本頁) 、可 A7 '~------ 五、發明説明（12 ) ' ~--— 置。 因此，在該實施例中，更換針夾部件41時，取下針夾 固定螺紋部件40再取下針夾部純，然後裝上新的針夫部 件4卜並將針夾固定螺紋部件4〇螺接以進行針爽部件41的 更換。這時，針夾固定螺紋部件4〇的前端部爲圓錐狀，且 在針炎。1M牛41的插入軸42上形成的凹部44也爲圓錐狀，因 此將針夾固定螺紋部件4〇螺接時，通過前端部做入凹部 44’而使針夾部件41正確定位於針杆2〇的軸線以向及轴 線L1圓周方向的預定位置處。 插入軸26的第1定位面44是凹狀的圓錐面，其具有與插 入軸26的第4軸線L4相垂直的第7軸線L7，固定螺紋部件24 的第2疋位面43是凸狀的圓錐面，其具有在含有上述陽螺紋 口[M牛37的第6軸線L6的直線上的第8軸線L8。 與插入軸26上呈凹狀圓錐面的第！定位面44的第i頂角 01相比，固定螺紋部件24呈凸狀圓錐面的第2定位面43的 第2頂角02更大（01$ 0 2)。 因此’使第1及第2定位面44、43相接觸，且通過圓形 的線接觸可達到正確的定位。 下面，參照第9、1〇圖對本發明的第3實施例進行說明。 第9圖爲本實施例的針夾部件5〇及針杆2〇的分解立體圖。第 10圖爲針夾部件50及針杆20的連接部的部分剖面圖。 本貫施例中，對於第1實施例，只有針炎部件不同，因 此在此以外的構成說明從略。本實施例的針夾部件5〇中， 其插入軸51的平面52的形成，與第1實施例中的平面27相比 本紙張尺度適用中國國家標準（CNS) Α4規格（2WX297公爱） 151224636 A7 ____B7 V. Description of the invention (11) 39 Extends along the sixth axis L6 of the male screw portion 37, passes through the through hole 28a, and has a contact with the first positioning surfaces 27, 44 of the above-mentioned insertion shaft 26 A second positioning surface 33 ′ 43 prevents the needle bar 20 and the insertion shaft 26 from being displaced in the directions of the first and fourth axes LI and L4, and also prevents the first and fourth axes LI, The mutual angles of L4 in the circumferential direction are misaligned. The first positioning surface 27 of the insertion shaft 26 is a plane that is parallel to an imaginary plane including the fourth axis L4 of the insertion shaft 26. The second positioning surface 33 of the fixed threaded member 24 is also a plane that is parallel to the fixed threaded member 24. The sixth axis L6 of the male screw portion 37 is perpendicular to each other. The positioning member 22 includes an annular portion 45 penetrated by the needle bar 20, and a convex portion 31 connected to the annular portion 45. The convex portion 31 is engraved with the above-mentioned threaded hole 29. The lower end surface 20b of the needle bar 20 and the upper end surface 32 of the needle clamp member 21 are in contact with each other so that the through hole 28a corresponds to the upper and lower positions of the first positioning surface 27 of the insertion shaft 26. Next, a second embodiment of the present invention will be described with reference to Figs. 6 to 8. In this embodiment, only the needle clamp fixing screw member 24 and the needle clamp member 21 of the first embodiment are changed. Therefore, the description of the other structures is omitted. The needle clip of this embodiment fixes the threaded member 40, and the front end portion 43 is not a flat surface but a conical projection. A conical recessed portion 44 is formed on the side of the insertion shaft 42 of the needle clamp member 41 so as to fit a distal end portion of the conical needle clamp fixing screw member. When the insertion shaft is inserted into the needle bar 20 and the lower end surface of the needle bar 20 is in contact with the upper end 32 of the sewing needle fixing portion 30 of the needle clamp member 41, the recess 44 is formed in the threaded through hole 28a of the needle bar 20. The corresponding standard paper size applies to the Chinese National Standard (CNS) A4 specification (2) 〇 < 297 Gongchu 14 (Please read the precautions on the back before filling this page), A7 '~ --- --- V. Description of the invention (12) '~ ---- Set. Therefore, in this embodiment, when the needle clamp member 41 is replaced, the needle clamp fixing threaded member 40 is removed, and then the needle clamp portion is removed, and then a new needle holder 4 is installed and the needle clamp is fixed to the threaded member 4. Screwing is performed to replace the needle cooler 41. At this time, the tip end portion of the needle clip fixing threaded member 40 has a conical shape and is in acupuncture. The recess 44 formed on the insertion shaft 42 of the 1M cow 41 is also conical. Therefore, when the needle clip is fixed to the threaded member 40, the tip portion is inserted into the recess 44 'to correctly position the needle clip 41 on the needle bar 2. The axis of 〇 is at a predetermined position in the circumferential direction of the axis L1. The first positioning surface 44 of the insertion shaft 26 is a concave conical surface having a seventh axis L7 perpendicular to the fourth axis L4 of the insertion shaft 26. The second positioning surface 43 of the fixed screw member 24 is convex. The conical surface has an eighth axis L8 on a straight line including the above-mentioned male screw opening [the sixth axis L6 of the M 37. Concave conical surface on the insertion shaft 26! The i-th vertex angle 01 of the positioning surface 44 is larger than the second vertex angle 02 (01 $ 0 2) of the second positioning surface 43 of the convex threaded conical surface of the fixed threaded member 24. Therefore, the first and second positioning surfaces 44 and 43 are brought into contact with each other, and accurate positioning can be achieved by a circular line contact. Next, a third embodiment of the present invention will be described with reference to FIGS. 9 and 10. FIG. 9 is an exploded perspective view of the needle clamp member 50 and the needle bar 20 of this embodiment. Fig. 10 is a partial cross-sectional view of a connection portion between the needle clamp member 50 and the needle bar 20. In the present embodiment, only the acupuncture component is different from the first embodiment, so the description of the other components is omitted. In the needle clamp member 50 of this embodiment, the plane 52 of the insertion shaft 51 is formed, compared with the plane 27 of the first embodiment. The paper size is in accordance with the Chinese National Standard (CNS) A4 specification (2WX297 public love) 15
、τI (請先閱讀背面之注意事項再填寫本頁) 1224636 五、發明説明（η ) 在軸線L4方向上更長。因此，可以對針夹部件财針杆別 的轴線方向的固定位置進行調整。也就是如第__面 圖所示，平面52的上下端面53、54之間形成的長度，比針 夾固定螺紋部件24的前端面的外徑大。因此，可以在上下 端面53、54間的任意位置上，固定針夾部件50。而且，也 可以設定成使針失固定螺紋部件24以與上端面53、或下端 面54相接的狀態進行定位。還可以通過使沿著第ι定位面η 的第4軸線⑽兩端面53、54，與固定螺紋部件24的定位 凸部38的側面相接的狀態進行定位。 右爲這樣的結構，例如即使在因缝紉針的更換，而必 須變更縫幼針高度的情況下，也不必調整針杆2〇的高度位 置’只需更換針夾部件5〇即可完成。 下面參妝第11圖，對本發明的第4實施例進行說明。 本只施例中，對於第丨實施例，由於只有針夾部件不同，因 此除此以外的結構說明從略。 口本貝施例的針夾部件60的插入軸61，形成爲非平面的 圓柱軸。由於這樣的結構，通過針夾固定螺紋部件24，可 以將針夾部件60在軸線L1圓周方向的任意位置進行定位 固定。同樣，可以在針杆2〇的軸線L1方向的任意位置進行 定位固定。 本實施例中，即使進行針夾部件21的更換，不必調整 "十杆0的位置’只需進行針夾部件6 〇的更換即可。這時， 由於針夾部件60可被固定在任意位置，因此使針夾部件6〇 與針杆20相對，並在軸線L1圓周方向及軸線L1方向上調整 本紙張尺度適用令國s家標準（⑽M規格⑵㈣97公 (請先閲讀背面之注意事項再填窝本頁) *、町— 1224636 A7 -----—__B^7________ 五、發明説明（Η ) 位置以進行定位，然後固定。若爲這樣的本實施例，位置 調整的自由度增大。 而且’由於針炎固疋螺紋部件24於插入軸61的接觸面 積增大，即使將針夾固定螺紋部件24的前端面彎曲成圓弧 狀也可以。這樣可以使接觸面積增大，因而可以以較大的 力對針夾部件21進行固定。第1圖至第n圖的各實施例中， 在固定螺紋部件24的形成有陽螺紋的陽螺紋部37上，在與 定位凸部38的相反側（第4圖及第5圖的右方）形成有開放的 扳手扣合孔47。將扳手扣合於該扳手扣合孔47中並旋轉， 即可進行螺紋29、37的螺接。 上述的各實施例中，定位部件22作爲針杆2〇的分體部 件，另外獨立製造而成。由於形成這樣的分體結構，可進 行低價的製造。本發明並不僅限於這樣的情況，針杆2〇與 定位部件2 2通過例如切削加工而形成一個整體也可以。 而且上述各實施例令的縫紉機是以平式連鎖缝縫紉機 爲例進行說明的，本發明並不僅限於此，只要是對具有通 過將針夾部件從針杆上裝卸而進行更換這樣結構的縫 都適用。 發明效果 若爲以上的本發明，由於設有可將針夾部件定位於針 杆的軸線圓周方向的預定位置的止轉部件，因此可以將針 夾部件定位於軸線圓周方向的正確位置，且不必進行如已 知技術中的對針杆的位置調整校正，即可有效率的進行針 夾部件的更換操作。 > 本紙張尺度適用中國國家標準（CNS) A4規格（2】0X297公爱） 17 (請先閲讀背面之注意事項再填寫本頁) 、v"· 五、發明説明（l5 而且，若爲本發明，可通過形成於針 及與該端面相接的針夾固定螺紋部件的前端面，的“ 部件進行確實的止轉， 而對針夹 使/、固疋於預定的位置。 之 而且，若爲本發明，由於對針夾部件 :方向的調整。因此不必對針杵在轴線方向進:::: 的調'㈣高度位置 而且，若爲本發明，螺接於定位部件的螺紋部件的前 端’嵌人針夾部件的凹部，可以魏針夾部件的止轉。 而且，若爲本發明，可將針夾部件在針杆的轴線方向 及軸線圓周方向的任意位置進行定位固定。因此，在針杆 固定的狀態下即可進行針夾部件軸線圓周方向及轴向的位 置調整。 而且，若爲本發明，由於定位部件與針杆爲分體部件， 與將定位部件和針杆作爲整體進行切削的情況相比，製造 成本較低。 18 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） 1224636 A7 B7 五、發明説明（l6 ) 1…連鎖缝缝紉機 2、 20···針杆3、 21、41、50、60··· 部件 4…缝初針 5…挺針板 6…缝幼機底板 7···缝紉機機殼 8…彎針 9···錯腳孔 10…缝幼針線 11…彎針線 12…機頭蓋 13、17A、18A…通孔 14…塞子 15、19 H 25、40···螺紋 部件 16…螺紋轴 17…針杆連杆 18…針杆握持部 元件標號對照 20a···中 c 孑L 22···定位部件 針夾 23··.固定缝紉針26、 42、61···插入軸 27、 28、36."平面 28a…螺紋通孔 29···螺紋孔 30···缝紉針固定部 31…凸部 32、34、53···上端面 33…前端面 33a…外徑 35、46、54···下端面 37···陽螺紋部 38、39···定位凸部 45…環狀部 4 7…扣合孔 65…上軸 6 6…曲轴 (請先閲讀背面之注意事項再填寫本頁) -口 本紙張尺度適用中國國家標準（CNS) A4規格（210X297公釐） 19ΤI (Please read the notes on the back before filling this page) 1224636 V. Description of the invention (η) is longer in the direction of the axis L4. Therefore, it is possible to adjust the fixed position in the other axial direction of the needle bar of the needle clamp member. That is, as shown in the __th view, the length formed between the upper and lower end surfaces 53 and 54 of the flat surface 52 is larger than the outer diameter of the front end surface of the needle clamp fixing screw member 24. Therefore, the needle clamp member 50 can be fixed at any position between the upper and lower end surfaces 53, 54. Furthermore, it is also possible to set the positioning of the needle loss fixing screw member 24 in a state of being in contact with the upper end surface 53 or the lower end surface 54. Orientation can also be performed in a state where the both end surfaces 53 and 54 along the fourth axis 沿着 along the first positioning surface η are in contact with the side surface of the positioning projection 38 of the fixed screw member 24. The right is such a structure. For example, even if it is necessary to change the height of the fine needle due to the replacement of the sewing needle, it is not necessary to adjust the height position of the needle bar 2 ′. The fourth embodiment of the present invention will be described with reference to FIG. 11. In this embodiment, only the clip components are different for the first embodiment, so the description of other structures is omitted. The insertion shaft 61 of the needle clamp member 60 of the mouthpiece embodiment is formed as a non-planar cylindrical shaft. With this structure, the screw member 24 is fixed by the needle clamp, and the needle clamp member 60 can be positioned and fixed at any position in the circumferential direction of the axis L1. Similarly, the needle bar 20 can be positioned and fixed at any position in the axis L1 direction. In this embodiment, even if the needle clamp member 21 is replaced, it is not necessary to adjust the " position of the ten rod 0 ' At this time, since the needle clamp member 60 can be fixed at any position, the needle clamp member 60 is opposed to the needle bar 20, and the paper scale is adjusted in the circumferential direction of the axis L1 and the axis L1. The national standard (⑽M Specifications ⑵㈣97 male (please read the precautions on the back before filling in this page) * 、 machi — 1224636 A7 -----—__ B ^ 7 ________ 5. Description of the invention (Η) Position for positioning, and then fix it. If so In this embodiment of the present invention, the degree of freedom of position adjustment is increased. Moreover, since the contact area of the screw member 24 on the insertion shaft 61 is increased, even if the front end surface of the needle clamp fixing screw member 24 is curved into an arc shape, Yes. In this way, the contact area can be increased, so that the needle clamp member 21 can be fixed with a large force. In each of the embodiments shown in FIGS. 1 to n, the male screw of the fixed screw member 24 is formed with a male screw. An open wrench engaging hole 47 is formed on the threaded portion 37 on the opposite side of the positioning convex portion 38 (right of Figs. 4 and 5). The wrench is engaged with the wrench engaging hole 47 and rotated. , You can screw the threads 29, 37 In each of the embodiments described above, the positioning member 22 is separately manufactured as a separate part of the needle bar 20. Due to the formation of such a separate structure, low-cost manufacturing is possible. The present invention is not limited to such cases, The needle bar 20 and the positioning member 22 may be integrally formed by, for example, cutting. In addition, the sewing machine of each of the embodiments described above is described by taking a flat chain sewing machine as an example. The present invention is not limited to this, as long as it is The present invention is applicable to a seam having a structure in which the needle clamp member is replaced by attaching and detaching the needle clamp member from the needle bar. According to the present invention, since the needle clamp member is positioned at a predetermined position in the circumferential direction of the axis of the needle bar, Therefore, the needle clamp member can be positioned at the correct position in the axial direction of the axis, and the needle clamp member can be replaced efficiently without having to adjust and correct the position of the needle bar as in the known technology. > This paper size applies to Chinese National Standard (CNS) A4 specifications (2) 0X297 public love) 17 (Please read the precautions on the back before filling this page ), V ". V. Description of the invention (l5) In the present invention, the front end surface of the threaded component can be fixed by the needle and the needle clip connected to the end surface. The needle clamp is fixed at a predetermined position. Moreover, according to the present invention, since the needle clamp component is adjusted in direction, it is not necessary to adjust the height of the needle pestle in the axial direction :::: Furthermore, according to the present invention, the recess of the needle clamp member is inserted into the front end of the threaded member screwed to the positioning member to prevent rotation of the needle clamp member. Furthermore, according to the present invention, the needle clamp member can be placed on the needle bar. Positioning and fixing can be performed at arbitrary positions in the axial direction and the axial direction of the axis. Therefore, the position of the axial direction of the axial direction of the needle clamp member can be adjusted with the needle bar fixed. Furthermore, according to the present invention, since the positioning member and the needle bar are separate members, the manufacturing cost is lower than that in a case where the positioning member and the needle bar are cut as a whole. 18 This paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) 1224636 A7 B7 V. Description of the invention (l6) 1 ... Interlock sewing machine 2, 20 ... needle bar 3, 21, 41, 50, 60 ··· Component 4 ... Initial stitch 5 ... Needle plate 6 ... Sewing machine bottom plate 7 ... Sewing machine case 8 ... Looper 9 ... Wrong hole 10 ... Sewing needle thread 11 ... Looper thread 12 ... Head caps 13, 17A, 18A ... through holes 14 ... plugs 15, 19 H 25, 40 ... threaded parts 16 ... threaded shaft 17 ... needle bar link 18 ... needle bar holding part element reference 20a ... middle c孑 L 22 ... Positioning part needle clip 23 ... Fixed sewing needles 26, 42, 61 ... Insertion shafts 27, 28, 36. " Plane 28a ... Threaded through hole 29 ... Threaded hole 30 ... · Sewing needle fixing part 31 ... Protrusions 32,34,53 ·· Upper end face 33 ... Front end face 33a ... Outer diameter 35,46,54 ·· Lower end face 37 ·· Male threaded part 38,39 ··· Positioning convex part 45 ... Ring part 4 7 ... Matching hole 65 ... Upper shaft 6 6 ... Crankshaft (Please read the precautions on the back before filling out this page)-The size of the paper is applicable to China National Standard (CNS) A4 specifications ( 210X297 PCT) 19