TWM523721U - Hidden thread cutting device of sewing machine - Google Patents

Description

縫紉機之隱藏式切線裝置Concealed tangent device for sewing machine

本新型係有關一種縫紉機之隱藏式切線裝置，尤指一種作動機構不外露，且非連續作動的切線裝置 。The present invention relates to a hidden tangential device for a sewing machine, and more particularly to a tangential device in which the actuating mechanism is not exposed and is not continuously actuated.

目前應用於縫紉機之切線裝置，有如新型專利第M481242號「包縫針車之縫線裁剪裝置」，係設有一組立板，固定於包縫縫紉機之機台上，該組立板上設有頂推動力源，並使該頂推動力源之傳動軸與活動刀桿連接，且於該組立板上裝置一固定刀板，令該活動刀桿及固定刀板之刀刃部相對應，另於該組立板設有一夾掣平台，並設有一遮蓋，覆蓋於該活動刀桿之刀刃部上方，另於該遮蓋側邊成型一縫線定位口，令該縫線定位口位於與該活動刀桿及固定刀板之刀刃部相接處。At present, the tangential device applied to the sewing machine is similar to the new patent No. M481242, "Sewing-cutting device for overlock sewing machine", which is provided with a set of vertical plates fixed on the machine of the overlock sewing machine, and the set of vertical plates is provided with a top driving force. a source, and connecting the drive shaft of the top driving force source to the movable cutter bar, and fixing a fixed blade on the set of vertical plates, corresponding to the blade edge of the movable cutter bar and the fixed blade, and the set of vertical plates a clamping platform is provided, and a cover is arranged to cover the blade edge of the movable cutter bar, and a suture positioning port is formed on the cover side, so that the suture positioning port is located with the movable cutter bar and the fixed knife The blade edge of the board meets.

上述習知之裁剪裝置，操作者於車縫完一工作物後，必須將縫線拉引至遮蓋縫線定位口，此時，頂推動力源接受到訊號驅動該連桿，以推動活動刀桿，而使該活動刀桿之刀刃部朝固定刀板之刀刃部方向位移，以將縫線裁斷，而使該縫線與車縫工作物分離。In the above conventional cutting device, after the operator finishes sewing a work object, the operator must pull the suture to cover the suture positioning position. At this time, the top driving force source receives the signal to drive the connecting rod to push the movable arbor. And the blade portion of the movable blade is displaced in the direction of the blade portion of the fixed blade to cut the stitch to separate the stitch from the sewing work.

惟上述之操作，操作者必須以徒手方式，將縫線拉引至遮蓋縫線定位口，操作者因此必須停止車縫工作，而使車縫作業中斷；另外，該用以聯動活動刀桿之頂推動力源及其連桿等機構，是曝露於外，操作者在徒手將縫線拉引至遮蓋縫線定位口的過程中極易與這些機構碰撞，造成受傷，也顯有改進的必要。However, in the above operation, the operator must pull the suture to cover the suture positioning position in a freehand manner, so the operator must stop the sewing work and interrupt the sewing operation; in addition, the linkage is used to interlock the movable arbor. The mechanism of the top driving force source and its connecting rod is exposed, and the operator easily collides with these mechanisms during the process of pulling the suture to cover the suture positioning hole by hand, causing injury and obvious improvement. .

本新型創作人有鑑於此，加予研究創新，揭示本新型縫紉機之隱藏式切線裝置 。In view of this, the creators of the present invention have added research and innovation to reveal the hidden tangential device of the novel sewing machine.

本新型之目的旨在提供一種縫紉機之隱藏式切線裝置，係包括：一本體，含有一吸料管部，令該吸料管部之末端銜接一抽風元件，且令該吸料管部之前端含有一吸口，並於該吸口處設有一刀座，以將外界之縫線吸入該吸口，並跨置於該刀座上者；一架體，鎖接於該本體與該縫紉機之殼體間，使該本體與該縫紉機之殼體間，界定形成一容置空間者；一刀板，以一轉軸樞裝於該本體上，且抵靠於該刀座之一側，令該刀板含有一刀片部，隨該刀板擺動地滑經該刀座之側緣者；一作動元件，鎖接於該容置空間中，該作動元件含有一作動桿，令該作動桿係樞連該刀板；以及一感測器，用以感測車縫工作物即將離開縫紉機之下針區時，便觸發一訊號，以驅動該作動元件之作動桿聯動該刀板依該刀板與該本體之樞接中心擺動，以切斷位於該刀片部與該刀座間之縫線者。The purpose of the present invention is to provide a concealed tangential device for a sewing machine, comprising: a body comprising a suction tube portion, the end of the suction tube portion is connected to a suction element, and the front end of the suction tube portion is arranged The utility model comprises a suction port, and a knife seat is arranged at the suction port to suck the outer seam thread into the suction port and straddle the knife seat; a frame is locked between the body and the casing of the sewing machine Between the body and the casing of the sewing machine, defining a receiving space; a blade is pivotally mounted on the body with a rotating shaft and abutting against one side of the blade, the blade includes a blade a blade portion is slidably slid over the side edge of the blade holder; an actuating member is locked in the accommodating space, the actuating member includes an actuating lever, and the actuating lever is pivotally connected to the blade And a sensor for sensing that the sewing work is about to leave the needle area under the sewing machine, triggering a signal to drive the actuating member of the actuating member to interlock the blade according to the blade and the body Swinging to the center to cut the gap between the blade portion and the holder By.

本新型所揭示縫紉機之隱藏式切線裝置，由於該作動元件是鎖接於該本體之內側，且隱藏於該容置空間中，使本新型用以撥動該刀板之機構，全數隱藏於該本體與縫紉機殼體間所構成的容置空間中運動，由於被該本體所阻擋，因此操作者之手部或者車縫工作物，便不會受快速運動的之作動元件及其聯動機構所擊傷或捲入，以增進縫紉機在操作上的安全性。The hidden tangential device of the sewing machine disclosed in the present invention is characterized in that the actuating element is locked on the inner side of the body and hidden in the accommodating space, so that the mechanism for plucking the blade is hidden in the whole The movement in the accommodating space formed between the main body and the sewing machine casing is blocked by the main body, so that the operator's hand or the sewing work object is not hit by the fast moving actuating element and its linkage mechanism. Injury or involvement to improve the safety of the sewing machine.

本新型所揭示縫紉機之隱藏式切線裝置，當工作物車縫完成後，在尾端所形成的縫線會自動被吸入該吸口中，並跨置於該刀座上，因此不需操作人員以徒手方式進行，便可自動進行切線工作，因此操作者也不需要停止車縫工作，可直接進行下一工作件的車縫作業，以提升工作效率。The hidden tangential device of the sewing machine disclosed in the present invention, when the sewing of the workpiece is completed, the suture formed at the tail end is automatically sucked into the suction port and straddles the turret, so that no operator is required The tangential work can be performed automatically by the freehand method, so the operator does not need to stop the sewing work, and the sewing work of the next work piece can be directly performed to improve work efficiency.

另外，本新型所揭示縫紉機之隱藏式切線裝置，由於該刀板在車縫的過程中，並非連續不斷地運動，而係接受該感測器的訊號而運動，因此可以大幅減少滑過該刀座的次數，降低該刀板之刀片部之磨損速度，使本新型可以大幅提升該刀板之使用壽命，而顯本新型之優異性。In addition, the hidden tangential device of the sewing machine disclosed in the present invention can greatly reduce the slipping through the knife because the blade does not continuously move during the sewing process, but receives the signal of the sensor and moves. The number of seats reduces the wear speed of the blade portion of the blade, so that the present invention can greatly improve the service life of the blade, and the superiority of the novel.

本新型所揭示之可取實體 ，可由以下說明及所附各圖式而得以明晰。The desirable entities disclosed in the present invention can be clarified by the following description and the accompanying drawings.

請參閱第一圖至第五圖所示，本新型係有關於一種縫紉機之隱藏式切線裝置，係包括：一本體(10)，含有一吸料管部(11)，令該吸料管部(11)之末端(11a)銜接一抽風元件[圖未示出]，且令該吸料管部(11)之前端(11b)含有一吸口(110)，並於該吸口(110)處設有一刀座(12)，以於啟動抽風元件後，可將外界通過該吸口(110)之縫線(L)吸入該吸口(110)內，並跨置於該刀座(12)上者；一架體(20)，鎖接於該本體(10)與該縫紉機之殼體(30)間，使該本體(10)與該縫紉機之殼體(30)間，界定形成一容置空間(130)者；一刀板(40)，以一轉軸(50)樞裝於該本體(10)上，令該刀板(40)含有一刀片部(43)，且抵靠於該刀座(13)之一側，並隨該刀板(40)擺動地滑經該刀座(12)之側緣者；一作動元件(60)，鎖接於該容置空間(130)中，該作動元件(60)含有一作動桿(61)，令該作動桿(61)係聯接該刀板(40)；以及一感測器(70)，用以感測工作物(P)即將離開縫紉機之下針區(N)時，便觸發一訊號，以驅動該作動元件(60)之作動桿(61)聯動該刀板(40)依該刀板(40)與該本體(10)之樞接中心擺動，以切斷位於該刀片部(43)與該刀座(12)間之縫線(L)者。Referring to the first to fifth figures, the present invention relates to a concealed tangential device for a sewing machine, comprising: a body (10) comprising a suction tube portion (11) for making the suction tube portion The end (11a) of the (11) is connected to a ventilation element [not shown], and the front end (11b) of the suction tube portion (11) is provided with a suction port (110) and is disposed at the suction port (110). a knife seat (12) for inducing the outside of the suction element through the suture (110) of the suction port (110) and straddle the holder (12); A body (20) is locked between the body (10) and the casing (30) of the sewing machine, so that the body (10) and the casing (30) of the sewing machine are defined to form an accommodation space ( 130) A blade (40) pivotally mounted on the body (10) with a rotating shaft (50), the blade (40) having a blade portion (43) and abutting against the blade holder (13) One side, and the blade (40) slidably slides over the side edge of the blade holder (12); an actuating member (60) is locked in the accommodating space (130), the actuating member (60) including an actuating lever (61) for coupling the operating lever (61) to the blade (40); and a sensor (70) When it is detected that the work object (P) is about to leave the needle area (N) under the sewing machine, a signal is triggered to drive the actuating member (61) of the actuating member (60) to interlock the blade (40). The blade (40) is pivoted with the pivoting center of the body (10) to cut the stitch (L) between the blade portion (43) and the holder (12).

如第一、二圖所示，本新型所揭示縫紉機之隱藏式切線裝置，其中該作動元件(60)係鎖接於該本體(10)之內側，且隱藏於該容置空間(130)中，使本新型用以撥動該刀板(40)之機構，全數隱藏於該本體(10)與縫紉機殼體(30)間所構成的容置空間(130)中運動，由於被該本體(10)所阻擋，操作者之手部、車縫工作物，不會受快速運動的之作動元件(60)及其聯動機構所擊傷或捲入，以增進縫紉機在操作上的安全性。As shown in the first and second figures, the hidden tangential device of the sewing machine of the present invention, wherein the actuating member (60) is locked to the inner side of the body (10) and hidden in the accommodating space (130). The mechanism for displacing the blade (40) of the present invention is completely hidden in the accommodating space (130) formed between the body (10) and the sewing machine casing (30), because the body is 10) Blocked, the operator's hand and sewing work are not injured or caught by the fast moving actuator (60) and its linkage mechanism to improve the safety of the sewing machine.

如第一、二圖所示本新型所揭示縫紉機之隱藏式切線裝置，進一步含有一彈簧(80)，令該彈簧(80)彈性地驅使該刀板(40)之刀片部(43)抵靠於該刀座(12)之一側，使該刀片部(43)可以在滑過該刀座(12)時，順利地切斷縫線(L)。The hidden tangential device of the sewing machine of the present invention as shown in the first and second figures further includes a spring (80) that elastically urges the blade portion (43) of the blade (40) against On one side of the holder (12), the blade portion (43) can smoothly cut the suture (L) as it slides over the holder (12).

如第一、二圖所示，本新型所揭示縫紉機之隱藏式切線裝置，其中該刀板(40)，其第一端設有一樞孔(41)，以該轉軸(50)樞裝於該本體(10)上，於該刀板(40)之中段，突伸一聯動臂(42)，並於該聯動臂(42)上穿設有一長槽孔(421)，以容許該作動桿(61)之一聯動銷(611)穿置於內，另於該刀板(40)之第二端鑲嵌該刀片部(43)者。As shown in the first and second figures, the hidden tangential device of the sewing machine of the present invention, wherein the blade (40) has a pivot hole (41) at a first end thereof, and the pivot shaft (50) is pivotally mounted thereon. On the main body (10), a linkage arm (42) protrudes from a middle portion of the blade (40), and a long slot (421) is formed in the linkage arm (42) to allow the actuation lever (61). One of the linkage pins (611) is placed inside, and the blade portion (43) is embedded in the second end of the blade (40).

本新型所揭示縫紉機之隱藏式切線裝置，其中該轉軸(50)係軸向地套接該彈簧(80)，並令該彈簧(80)軸向地彈性頂撐於該轉軸(50)與該刀板(43)間。The hidden tangential device of the sewing machine of the present invention, wherein the rotating shaft (50) axially sleeves the spring (80), and the spring (80) is axially elastically supported on the rotating shaft (50) and the Between the blades (43).

如第一、二圖所示，本新型所揭示之隱藏式切線裝置，其中該轉軸(50)係含有一軸部(51)，該軸部(51)之第一端，係突設有突緣(511)，且該軸部(50)之第二端螺合一調整螺絲(52)，如是藉由旋轉該調整螺絲(52)，以調整位於該轉軸(50)與該刀板(40)間之彈簧(80)張力。As shown in the first and second figures, the hidden tangential device disclosed in the present invention, wherein the rotating shaft (50) comprises a shaft portion (51), and the first end of the shaft portion (51) is provided with a flange (511), and the second end of the shaft portion (50) is screwed with an adjusting screw (52), if the adjusting screw (52) is rotated to adjust the rotating shaft (50) and the blade (40) The tension between the springs (80).

本新型所揭示縫紉機之隱藏式切線裝置，其中該作動元件(60)是可指氣壓缸、液壓缸或電磁閥，本新型並不予自限。The hidden tangential device of the sewing machine disclosed in the present invention, wherein the actuating member (60) can be a pneumatic cylinder, a hydraulic cylinder or a solenoid valve, and the present invention is not limited.

本新型所揭示縫紉機之隱藏式切線裝置，於應用時，如第三圖，可令當該感測器(70)感測車縫工作物(P)的車縫工作即將終了前[即該感測器(70)之感測區域已無工作物(P)之狀態，即將離開下針區(N)]，便觸發一訊號，以驅動該作動元件(60)在一段時間內，連續地以其作動桿(61)來回擺動該刀板(40)，當工作件(P)之終端通過該吸口(110)外側時，如第四圖所示，剩餘的縫線(L)便會被吸入該吸口(110)內，且朝該刀座(12)方向位移，並跨置在該刀座(12)上，而被該擺動的刀板(40)所切斷，如第五圖所示，被切斷的縫線(L)循吸料管部(11)被吸至一廢料區[圖未示出]集中，而後停止該作動元件(60)之作動；由於該刀板(40)在車縫的過程中，並非連續不斷地運動，而係接受該感測器(70)的訊號而運動，因此可以大幅減少滑過該刀座(12)的次數，以降低該刀板(40)之刀片部(43)之磨損速度，使本新型可以大幅提升該刀板(40)之使用壽命，而顯本新型之優異性。The hidden tangential device of the sewing machine disclosed in the present invention, when applied, as shown in the third figure, allows the sensor (70) to sense the sewing work of the sewing work (P) before the end of the sewing work [that is, the feeling The sensing area of the detector (70) has no working object (P) state, that is, leaving the lower needle area (N)], and a signal is triggered to drive the actuating element (60) continuously for a period of time. The actuating lever (61) swings the blade (40) back and forth. When the terminal of the working member (P) passes outside the suction port (110), as shown in the fourth figure, the remaining suture (L) is sucked. The suction port (110) is displaced in the direction of the holder (12) and is placed on the holder (12), and is cut by the swinging blade (40), as shown in FIG. , the cut suture (L) is sucked into a waste area [not shown], and then the actuation of the actuating element (60) is stopped; due to the blade (40) During the sewing process, instead of continuously moving, the signal of the sensor (70) is received to move, so that the number of times of sliding over the holder (12) can be greatly reduced to lower the blade (40). The wear speed of the blade portion (43), This can dramatically increase the novel blade plate (40) of the service life, and present significant superiority of the novel.

本新型所揭示縫紉機之隱藏式切線裝置，當工作物(P)車縫完成後，在尾端所形成的縫線(L)會自動被吸入該吸口(110)中，並跨置於該刀座(12)上，因此不需操作人員以徒手方式進行牽引縫線的動作，本新型便可自動進行切線工作，緣此，操作者也不需要停止車縫工作，可直接進行下一工作物的車縫作業，以提升工作效率，而顯本新型之優異性。The hidden tangential device of the sewing machine disclosed in the present invention, when the sewing of the work object (P) is completed, the suture (L) formed at the tail end is automatically sucked into the suction port (110) and placed across the knife On the seat (12), the operator does not need to perform the action of pulling the suture in a freehand manner, and the present invention can automatically perform the tangential work. Therefore, the operator does not need to stop the sewing work, and can directly carry out the next work. The sewing work is carried out to improve work efficiency and to show the superiority of the new type.

本新型所揭示之結構及形狀，可於不違本新型之精神或範疇下，予以修飾應用，本新型並不自限於上述之實施方式。The structure and shape disclosed in the present invention can be modified and applied without departing from the spirit or scope of the present invention. The present invention is not limited to the above embodiments.

(10)‧‧‧本體
(11)‧‧‧吸料管部
(11a)‧‧‧末端
(11b)‧‧‧前端
(110)‧‧‧吸口
(12)‧‧‧刀座
(130)‧‧‧容置空間
(20)‧‧‧架體
(30)‧‧‧殼體
(40)‧‧‧刀板
(41)‧‧‧樞孔
(42)‧‧‧聯動臂
(421)‧‧‧長槽孔
(43)‧‧‧刀片部
(50)‧‧‧轉軸
(51)‧‧‧軸部
(511)‧‧‧突緣
(52)‧‧‧調整螺絲
(60)‧‧‧作動元件
(61)‧‧‧作動桿
(611)‧‧‧聯動銷
(70)‧‧‧感測器
(80)‧‧‧彈簧
(L)‧‧‧縫線
(P)‧‧‧工作物
(N)‧‧‧下針區(10) ‧‧‧ Ontology
(11)‧‧‧Sucking pipe department
(11a) ‧ ‧ end
(11b) ‧‧‧ front end
(110) ‧ ‧ mouthpiece
(12)‧‧‧Tool holder
(130) ‧‧‧ accommodating space
(20) ‧ ‧ ‧ frame
(30) ‧‧‧Shell
(40)‧‧‧ Blades
(41) ‧‧‧Pivot
(42) ‧‧‧ linkage arm
(421)‧‧‧Long slot
(43) ‧‧‧ Blade Department
(50) ‧‧‧ shaft
(51)‧‧‧Axis
(511) ‧ ‧ burr
(52)‧‧‧Adjustment screws
(60) ‧‧‧ actuation elements
(61)‧‧‧Action rod
(611)‧‧‧ linkage sales
(70)‧‧‧ Sensors
(80) ‧ ‧ spring
(L)‧‧‧ suture
(P) ‧ ‧ work
(N) ‧ ‧ lower needle zone

第一圖：本新型之立體結構分解示意圖； 第二圖：本新型於組裝完成後之立體示意圖； 第三圖：係本新型感測工作務即將完成車縫工作之狀態示意圖； 第四圖：係顯示縫線被吸入吸口中，並跨置於刀座上之示意圖；以及 第五圖：係顯示本新型進行切線操作之示意圖。The first picture: the schematic diagram of the three-dimensional structure of the present invention; the second picture: the three-dimensional schematic diagram of the new type after the assembly is completed; the third picture: the state of the new sensing work is about to complete the state of the sewing work; the fourth picture: The figure shows a schematic diagram in which the suture is sucked into the mouthpiece and placed on the knife seat; and the fifth figure shows the schematic diagram of the present invention for performing the tangential operation.

(10)‧‧‧本體 (10) ‧‧‧ Ontology

(11)‧‧‧吸料管部 (11)‧‧‧Sucking pipe department

(11a)‧‧‧末端 (11a) ‧ ‧ end

(11b)‧‧‧前端 (11b) ‧‧‧ front end

(110)‧‧‧吸口 (110) ‧ ‧ mouthpiece

(12)‧‧‧刀座 (12)‧‧‧Tool holder

(130)‧‧‧容置空間 (130) ‧‧‧ accommodating space

(20)‧‧‧架體 (20) ‧ ‧ ‧ frame

(30)‧‧‧殼體 (30) ‧‧‧Shell

(40)‧‧‧刀板 (40)‧‧‧ Blades

(41)‧‧‧樞孔 (41) ‧‧‧Pivot

(43)‧‧‧刀片部 (43) ‧‧‧ Blade Department

(50)‧‧‧轉軸 (50) ‧‧‧ shaft

(52)‧‧‧調整螺絲 (52)‧‧‧Adjustment screws

(60)‧‧‧作動元件 (60) ‧‧‧ actuation elements

(80)‧‧‧彈簧 (80) ‧ ‧ spring

Claims (7)

一種縫紉機之隱藏式切線裝置，係包括： 一本體，含有一吸料管部，令該吸料管部之末端銜接一抽風元件，且令該吸料管部之前端含有一吸口，並於該吸口處設有一刀座，以將外界之縫線吸入該吸口，並跨置於該刀座上者； 一架體，鎖接於該本體與該縫紉機之殼體間，使該本體與該縫紉機之殼體間，界定形成一容置空間者； 一刀板，以一轉軸樞裝於該本體上，且抵靠於該刀座之一側，令該刀板含有一刀片部，隨該刀板擺動地滑經該刀座之側緣者； 一作動元件，鎖接於該容置空間中，該作動元件含有一作動桿，令該作動桿係樞連該刀板；以及 一感測器，用以感測工作物即將離開縫紉機之下針區時，便觸發一訊號，以驅動該作動元件之作動桿聯動該刀板依該刀板與該本體之樞接中心擺動，以切斷位於該刀片部與該刀座間之縫線者。A hidden tangential device for a sewing machine, comprising: a body, comprising a suction pipe portion, the end of the suction pipe portion is connected to a suction element, and the suction pipe portion has a suction port at the front end thereof, and a nozzle is provided at the mouth to draw the outer seam into the mouth and straddle the seat; a frame is locked between the body and the casing of the sewing machine, so that the body and the sewing machine Between the housings, a space is defined to be formed; a blade is pivotally mounted on the body with a rotating shaft and abuts against one side of the holder, so that the blade includes a blade portion along with the blade Swingingly sliding through the side edge of the seat; an actuating member is locked in the accommodating space, the actuating member includes an actuating lever for pivoting the blade to the blade; and a sensor When it is detected that the work object is about to leave the needle area under the sewing machine, a signal is triggered to drive the actuating member of the actuating element to interlock the blade to swing according to the pivotal center of the blade and the body to cut off the The stitch between the blade portion and the holder. 如請求項1所述縫紉機之隱藏式切線裝置，進一步含有一彈簧，令該彈簧彈性地驅使該刀板之刀片部抵靠於該刀座之一側。The concealed tangential device of the sewing machine according to claim 1, further comprising a spring that elastically urges the blade portion of the blade against one side of the holder. 如請求項1所述縫紉機之隱藏式切線裝置，其中該刀板，其第一端設有一樞孔，以一轉軸樞裝於該本體上，於該刀板之中段，突伸一聯動臂，並於該聯動臂上穿設有一長槽孔，以容許該作動桿之一聯動銷穿置於內，另於該刀板之第二端鑲嵌該刀片部者。The hidden tangential device of the sewing machine of claim 1, wherein the blade has a pivot hole at a first end thereof, and a pivot shaft is pivotally mounted on the body, and a linkage arm protrudes from a middle portion of the blade A long slot is formed in the linkage arm to allow one of the actuating levers to engage the pin, and the blade is mounted on the second end of the blade. 如請求項1所述縫紉機之隱藏式切線裝置，其中該轉軸係軸向地套接一彈簧，並令該彈簧軸向地彈性頂撐於該轉軸與該刀板間。The concealed tangential device of the sewing machine of claim 1, wherein the rotating shaft axially sleeves a spring and axially elastically supports the spring between the rotating shaft and the blade. 如請求項4所述縫紉機之隱藏式切線裝置，其中該轉軸係含有一軸部，該軸部之第一端，係突設有突緣，且該轉軸之第二端螺合一調整螺絲。The hidden tangential device of the sewing machine of claim 4, wherein the shaft comprises a shaft portion, the first end of the shaft portion is provided with a flange, and the second end of the shaft is screwed with an adjusting screw. 如請求項1所述縫紉機之隱藏式切線裝置，其中該作動元件是指氣壓缸、液壓缸或電磁閥。A concealed tangential device for a sewing machine according to claim 1, wherein the actuating member is a pneumatic cylinder, a hydraulic cylinder or a solenoid valve. 如請求項1所述縫紉機之隱藏式切線裝置，其中該作動元件係鎖接於該本體之內側，且隱藏於該容置空間中。The hidden tangential device of the sewing machine of claim 1, wherein the actuating element is locked to the inner side of the body and hidden in the accommodating space.