1300449 (1) ^ 玖、發明說明 【發明所屬之技術領域】 本發明是關於從上方卡合布料將該布料推壓在載面上 的縫紉機之壓布裝置。 【先前技術】 習知的縫紉機之壓布裝置，其連結在壓台上的擺動軸 是由固定在縫紉機框上的軸套支撐著（例如：請參考專利 文獻1)。然後，固定在壓台前端的壓腳，是由下壓彈簧 裝置（壓棒）往下方即往加工品支撐構件（縫紉機底板載 面）推壓。於一般上，下壓彈簧裝置具備有牙叉送布連桿 和彈性構件，壓腳是於縫紉機驅動時由推送齒的出沒使其 4 繞著擺動軸進行圓弧運動。 〔專利文獻1〕日本實公平6-16604號公報（第2頁 左欄中的第5圖） 【發明內容】 〔發明欲解決之課題〕 然而’習知的縫紉機之壓布裝置，在縫製不同種類或 厚度的布料時，壓腳有時會成爲布料搬送的障礙。其結 果，縫紉機就產生無法吻合縫製的問題。 〔用以解決課題之手段〕 淳：#明是具備有：是由可旋轉地支撐在縫紉機臂和縫 -4- 1300449 (2) 紉機底板所形成的縫紉機框背面上的彈簧使其彈推往一方 向的上推操縱桿；連結於該上推操縱桿的連桿；可旋轉地 支撐在軸套上其一部份是卡合於連桿的擺動軸；中介著栓 子連結於擺動軸的端部且在前端固定有壓腳的壓台；及， 具有壓台用引導面的牙叉送布連桿和可卡合於該牙叉送布 連桿的彈性構件的壓棒，由該壓棒將壓台前端繞著擺動軸 彈推在下方然後由壓腳將布料推壓在縫紉機底板載面上的 縫紉機之壓布裝置，其特徵爲在牙叉送布連桿的下陷部設 有凹部，使栓子可遊嵌於該凹部的同時，在壓台上形成有 卡合用的溝槽，使遊嵌在牙叉送布連桿凹部內的栓子下端 可卡合於壓台的栓子卡合用溝槽。 根據本發明，因其是構成爲在牙叉送布連桿的下陷部 設有凹部，使栓子可遊嵌於該凹部的同時，於壓台具備有 栓子卡合用溝槽，所以就可使遊嵌在牙叉送布連桿凹部內 的栓子下端卡合於壓台的栓子卡合用溝槽。 【實施方式】 〔發明之最佳實施形態〕 以下是使用圖面對本發明相關實施形態進行說明。縫 糸刃機之壓布裝置，具備有上推操縱桿1、連桿2、擺動軸 3、壓台4及壓棒5。 上推操縱桿具有連桿安裝用的孔la，該操縱桿1 的底端部是用有段式螺絲6使其可旋轉地支撐在縫紉機框 Μ的背面。彈簧7是和上推操縱桿1 一起介設於有段式螺 -5- 1300449 (3) 絲6。彈簧7的一端是卡止於縫紉機框μ，另一端是卡止 於上推操縱桿1的下部。連桿2，是由鉤8和柄9所構 成’鉤8是被安裝在上推操縱桿1的孔ia。在柄9上， 形成有爪部9 a的同時穿設有孔9 b。 擺動軸3是可旋轉地介設於柄9的孔9b。擺動軸3 是可旋轉地支撐在軸套10，軸套10是固定在托座11 上。托座1 1是以螺絲12安裝在縫紉機框Μ的背面。 即’托座1 1是形成爲可裝脫於縫紉機框Μ，其也可和錯 開軸套10的固定位置所形成的另一托座28(參考第5 圖）替換。此外，於擺動軸3的一方端部固定著曲柄片 3 a，於另一方端部以螺絲1 4安裝著卡圈1 3。於軸套1 0 介設有彈簧1 5。彈簧1 5的一端是卡止於縫紉機框Μ，另 一端是卡止於柄9的下部。藉由彈簧7、1 5的作用，將上 推操縱桿1彈推往一方向，使腳踏板等所轉動的上推操縱 桿1施有恢復力。另，當以腳踏板等使推操縱桿1轉動 時，於固定在擺動軸3上的卡圈1 3的卡止部1 3 a即於擺 動軸3的一部份上卡合著柄9的的爪部9a，使擺動軸3 繞著軸心旋轉。 於擺動軸3的曲柄片3 a以小螺絲1 7固定著栓子 16。壓台4是中介著栓子16可旋轉地連結於擺動軸3的 曲柄片3a。曲柄片3a的底端，是形成爲不會突出縫紉機 臂A的左側面ML還左方。如此一來’就可確保縫初機底 板B的載面BS上的省力裝置用空間。於壓台4的前端以 螺絲4 c固定著壓腳4 a。壓腳4 a ’在螺絲4 c鬆弛時就可 -6 - 1300449 (4) 變更其在壓台4上的固定位置。壓棒5，是配置在壓台4 的中途。壓棒5，是設置在貫穿著縫紉機臂a的筒體 1 8 ’其具有線圈彈簧（彈性構件）1 9及牙叉送布連桿 20。線圈彈簧19’是被***在筒體18內。牙叉送布連桿 20是形成爲中空，其連桿20的下端具有下陷部20a。牙 叉送布連桿20的下陷部20a，具有可引導壓台4左右面 的引導面。 於牙叉送布連桿20的中空部，以卡止件22固定著線 圈彈簧1 9用的卡合片2 1。該卡合片21的下端是位於要 比牙叉送布連桿20的下陷部20a還深處的位置，此空間 是形成牙叉送布連桿20的凹部20aa。於牙叉送布連桿20 的凹部20aa，遊嵌著栓子23。此外，壓台4的上面具有 溝槽4b，構成爲栓子23的下端是可卡合於壓台4的溝槽 4b。藉此，使來自於栓子23的推壓不會脫離壓台4的溝 槽4b。另，手動操縱桿25，是中介著有段式螺絲26安裝 在縫紉機臂A上。藉由手動操縱桿25的轉動操作，使手 動操縱桿25的爪部25a卡合於牙叉送布連桿20的卡止件 22，以解除牙叉送布連桿20造成壓台4的推壓。 又，將栓子23前端部的左右面開槽的同時，使該開 槽部份23a卡合於形成在卡合於牙叉送布連桿20下端的 下陷部20a的引導面。即，對於牙叉送布連桿20，是將 其下陷部20a的引導面間隔形成爲要比凹部20aa的內徑 還窄。如此一來，在手動操縱桿25造成壓台4的推壓解 除時栓子23就不會脫離牙叉送布連桿20。線圈彈簧19 -7 - 1300449 (5) 對於牙叉送布連桿2 0的推壓力，是以調整螺絲2 7的旋轉 操作來進行調整。壓棒5，於通常是將壓台4的前端繞著 擺動軸彈推在下方。藉此使固定在壓台4前端的壓腳 4a，可將布料推壓在縫紉機底板B的載面BS上。 於本實施形態中，雖是以替換成錯開軸套的固定位置 所形成的另一托座來變更縫紉機底板載面附近的壓腳圓弧 軌跡，但並不限定於此。例如第6圖所示般，也可以是將 形成有長孔29a的托座29以螺絲30固定在縫紉機框Μ 上。如此一來，在由螺絲30鎖定鬆弛時就可在長孔29a 移動托座的固定位置，使縫紉機底板載面附近的壓腳圓弧 軌跡得以變更。此外，在替換托座2 8時，如第7圖所 示，應對於托座28的擺動軸即曲柄片32a變更後的擺動 軸32也一倂替換時，就可使遊嵌在牙叉送布連桿20凹部 的栓子23下端卡合於壓談4的栓子卡合用溝槽4b。 〔發明效果〕 根據本發明時，因是將遊嵌在牙叉送布連桿凹部內的 栓子下端卡合於壓台的栓子卡合用溝槽，所以在縫紉機驅 動時栓子的下端在壓台上是不會前後滑動，因此可將壓棒 形成的推壓力變動成爲最低限度。又加上，使栓子的下端 在壓台上是不會前後滑動所以就可減少栓子下端的摩損。 另，將曲柄片的底端構成爲不會突出縫紉機臂的左側面還 左方時，就可確保縫紉機底板上的省力裝置用空間。 -8- 1300449 (6) 【圖式簡單說明】 第1圖爲本發明相關縫紉機之壓布裝置的分解透視 圖。 第2圖爲具備有與第1圖相同裝置的縫紉機背面圖。 第3圖爲具備有與第1圖相同裝置的縫紉機左側面 圖。 第4圖爲表示第1圖相同裝置的壓棒要部剖面圖。 第5圖爲錯開軸套的固定位置所形成的另一托座透視 第6圖爲表示又另一托座形態的透視圖。 第7圖爲表示第5圖的托座和應對於此的擺動軸透視 圖。 〔圖號說明〕 1 :上推操縱桿 3 :擺動軸 3狂：曲柄片 4 :壓台 4a :壓腳 4 b :溝槽 5 :壓棒 7 :彈簧 8 :鉤（連桿） 9 :柄（連桿） 1300449 (7) 10 :軸套 1 1 :托座 1 5 :彈簧 16 :栓子 20 :牙叉送布連桿 20a :下陷部 20aa :凹部 28 、 29 :托座 32 :擺動軸 A :縫紉機臂 B :縫紉機底板 B S :載面 Μ :縫紉機框1300449 (1) ^ TECHNICAL FIELD OF THE INVENTION The present invention relates to a press device for a sewing machine that presses a cloth onto a carrier surface from above. [Prior Art] A conventional sewing machine for a sewing machine in which a swing shaft coupled to a press table is supported by a sleeve fixed to a sewing machine frame (for example, refer to Patent Document 1). Then, the presser foot fixed to the front end of the press table is pressed downward by the pressing spring device (pressure bar) toward the workpiece supporting member (the sewing machine bottom plate carrying surface). Generally, the pressing spring device is provided with a fork feed link and an elastic member, and the presser foot is caused by the movement of the push teeth when the sewing machine is driven to move the arc around the swing shaft. [Patent Document 1] Japanese Patent Publication No. 6-16604 (the fifth drawing in the left column of the second page) [Summary of the Invention] [The problem to be solved by the invention] However, the sewing device of the conventional sewing machine is different in sewing. When the fabric of the type or thickness is used, the presser foot may become an obstacle to the conveyance of the fabric. As a result, the sewing machine has a problem that the sewing machine cannot be stapled. [Means for Solving the Problem] 淳: #明是有有: It is a spring that is rotatably supported on the back of the sewing machine frame formed by the sewing machine arm and the slit -4- 1300449 (2) a push-up lever in one direction; a link coupled to the push-up lever; a swinging shaft rotatably supported on the sleeve, a portion of which is engaged with the link; and the plug is coupled to the swing shaft a presser having an end portion and a presser foot fixed at the front end; and a pressure bar for the fork feed link having the guide surface for the press table and the elastic member engageable with the fork feed link a pressing device for pressing the front end of the pressing table around the swinging axis and then pushing the cloth against the loading surface of the sewing machine by the pressing foot, which is characterized in that the depressed portion of the fork feeding link is provided The recessed portion allows the emboss to be fitted into the recessed portion, and a groove for engaging is formed on the pressing table, so that the lower end of the plug embedded in the concave portion of the fork feeding link can be engaged with the plug of the pressing table The sub-card uses a groove. According to the present invention, since the recessed portion is provided in the depressed portion of the fork feed link, the plug can be fitted to the recess, and the plug is provided with the groove for the engagement of the plug. The lower end of the plug embedded in the concave portion of the fork feeding link is engaged with the groove for engaging the plug of the pressing table. [Embodiment] BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. The press device of the slitting machine includes a push-up lever 1, a link 2, a swing shaft 3, a press table 4, and a pressure bar 5. The push-up lever has a hole la for mounting a link, and the bottom end portion of the lever 1 is rotatably supported on the back surface of the sewing machine frame by a segmented screw 6. The spring 7 is interposed with the push-up lever 1 to the segmented screw -5-1300449 (3) wire 6. One end of the spring 7 is locked to the sewing machine frame μ, and the other end is locked to the lower portion of the push-up lever 1. The link 2 is constituted by the hook 8 and the shank 9. The hook 8 is a hole ia which is mounted on the push-up lever 1. On the shank 9, a hole 9b is formed while the claw portion 9a is formed. The swing shaft 3 is a hole 9b rotatably disposed in the shank 9. The swing shaft 3 is rotatably supported on the sleeve 10, and the sleeve 10 is fixed to the bracket 11. The bracket 1 1 is attached to the back of the sewing machine frame by screws 12. That is, the bracket 1 is formed to be detachable from the sewing machine frame, and it can be replaced with another bracket 28 (refer to Fig. 5) formed by fixing the fixed position of the sleeve 10. Further, a crank piece 3a is fixed to one end portion of the swing shaft 3, and a collar 13 is attached to the other end portion with a screw 14. A spring 15 is interposed in the sleeve 10 . One end of the spring 15 is locked to the sewing machine frame, and the other end is locked to the lower portion of the handle 9. By the action of the springs 7, 15, the push-up lever 1 is pushed in one direction, and the push-up lever 1 that is rotated by the pedal or the like is applied with a restoring force. Further, when the push lever 1 is rotated by a foot pedal or the like, the locking portion 13 3 of the collar 13 fixed to the swing shaft 3 engages the handle 9 on a portion of the swing shaft 3 The claw portion 9a rotates the swing shaft 3 about the axis. The pluck 16 is fixed to the crank piece 3a of the oscillating shaft 3 with a small screw 17. The pressing table 4 is a crank piece 3a in which the spigot 16 is rotatably coupled to the swing shaft 3. The bottom end of the crank piece 3a is formed so as not to protrude to the left side ML of the sewing machine arm A and to the left. In this way, it is possible to secure the space for the labor-saving device on the carrier surface BS of the chassis B of the primary machine. The presser foot 4a is fixed to the front end of the pressing table 4 by a screw 4c. The presser foot 4 a ' can be changed when the screw 4 c is loosened -6 - 1300449 (4) The fixed position on the press table 4 is changed. The pressure bar 5 is disposed in the middle of the pressing table 4. The pressure bar 5 is provided with a cylindrical body 18 8' penetrating the sewing machine arm a, and has a coil spring (elastic member) 19 and a fork feed link 20. The coil spring 19' is inserted into the barrel 18. The fork feed link 20 is formed to be hollow, and the lower end of the link 20 has a depressed portion 20a. The depressed portion 20a of the fork feed link 20 has a guide surface that guides the left and right surfaces of the press table 4. The engaging piece 21 for the coil spring 19 is fixed to the hollow portion of the fork feed link 20 by the locking member 22. The lower end of the engaging piece 21 is located deeper than the depressed portion 20a of the fork feed link 20, and this space is a recess 20aa for forming the fork feed link 20. The plug 23 is fitted in the recess 20aa of the fork feed link 20. Further, the upper surface of the pressing table 4 has a groove 4b, and the lower end of the plug 23 is formed as a groove 4b engageable with the pressing table 4. Thereby, the pressing from the embossing 23 is not released from the groove 4b of the pressure table 4. Further, the manual operating lever 25 is attached to the sewing machine arm A by means of a segmented screw 26. By the rotation operation of the manual operating lever 25, the claw portion 25a of the manual operating lever 25 is engaged with the locking member 22 of the delivery fork link 20 to release the push of the pressure roller 4 by the fork feed link 20. Pressure. Further, the left and right surfaces of the distal end portion of the plug 23 are grooved, and the grooved portion 23a is engaged with the guide surface formed on the depressed portion 20a which is engaged with the lower end of the delivery fork link 20. That is, in the fork feeder link 20, the guide surface interval of the depressed portion 20a is formed to be narrower than the inner diameter of the recess 20aa. As a result, the tamper 23 does not come off the fork feed link 20 when the manual lever 25 causes the pressing of the pressure table 4 to be released. Coil spring 19 -7 - 1300449 (5) The pressing force of the fork feed link 20 is adjusted by the rotation of the adjusting screw 27. The pressure bar 5 is generally used to push the front end of the pressing table 4 downward about the swing axis. Thereby, the presser foot 4a fixed to the front end of the pressing table 4 can press the cloth against the carrying surface BS of the sewing machine bottom plate B. In the present embodiment, the trajectory of the presser foot circular in the vicinity of the chassis surface of the sewing machine is changed by replacing the other holder formed by the fixed position of the sleeve, but the present invention is not limited thereto. For example, as shown in Fig. 6, the bracket 29 on which the long hole 29a is formed may be fixed to the sewing machine frame by screws 30. As a result, when the screw 30 is locked and slackened, the long hole 29a can be moved to the fixed position of the bracket, and the trajectory of the presser foot in the vicinity of the sewing machine floor surface can be changed. Further, when the bracket 28 is replaced, as shown in Fig. 7, the swing shaft 32 after the change of the swing shaft 32a of the bracket 28, that is, the crank shaft 32 is changed, can be inserted into the fork. The lower end of the plug 23 of the concave portion of the cloth link 20 is engaged with the plug engagement groove 4b of the pressure gauge 4. [Effect of the Invention] According to the present invention, since the lower end of the plug that is fitted in the concave portion of the fork feed link is engaged with the plug engagement groove of the press table, the lower end of the plug is driven by the sewing machine. Since the pressure table does not slide back and forth, the pressure of the pressing force formed by the pressure bar can be minimized. In addition, the lower end of the embossing is prevented from sliding back and forth on the pressing table, so that the wear of the lower end of the embossing can be reduced. Further, when the bottom end of the crank piece is formed so as not to protrude to the left side of the sewing machine arm, the space for the labor-saving device on the sewing machine floor can be secured. -8- 1300449 (6) [Simple description of the drawings] Fig. 1 is an exploded perspective view of the cloth pressing device of the sewing machine of the present invention. Fig. 2 is a rear view of the sewing machine provided with the same apparatus as Fig. 1. Fig. 3 is a left side view of the sewing machine provided with the same apparatus as Fig. 1. Fig. 4 is a cross-sectional view showing a main part of a pressure bar of the same apparatus as in Fig. 1. Fig. 5 is a perspective view of another bracket formed by staggering the fixed position of the sleeve. Fig. 6 is a perspective view showing still another bracket form. Fig. 7 is a perspective view showing the bracket of Fig. 5 and the swing shaft in response thereto. [Description of the figure] 1 : Push-up lever 3 : Swing shaft 3 mad: Crank piece 4 : Press table 4a : Presser foot 4 b : Groove 5 : Pressure bar 7 : Spring 8 : Hook (link) 9 : Handle (link) 1300449 (7) 10 : Bushing 1 1 : Bracket 1 5 : Spring 16 : Plug 20 : Fork feed link 20a : Sink 20aa : Recess 28 , 29 : Bracket 32 : Swing axis A : Sewing machine arm B : Sewing machine bottom plate BS : Carrier Μ : Sewing machine frame
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