TWI605168B - Sewing machine needle guard - Google Patents
Sewing machine needle guard Download PDFInfo
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- TWI605168B TWI605168B TW104116343A TW104116343A TWI605168B TW I605168 B TWI605168 B TW I605168B TW 104116343 A TW104116343 A TW 104116343A TW 104116343 A TW104116343 A TW 104116343A TW I605168 B TWI605168 B TW I605168B
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Description
本發明有關一種縫紉機的護針機構，尤指一種受縫紉機之前移動齒推拉桿帶動之護針結構。The invention relates to a needle guarding mechanism of a sewing machine, in particular to a needle guarding structure driven by a moving tooth push-pull rod before a sewing machine.
習用縫紉機於進行車縫作業的過程中，一車針由一布的上方往下貫穿至該布，並進入至一最低點，再由該最低點往上位移並離開該布。除此之外，於該車針進行往復之車縫作業的同時，更有一鉤針，以與該車針往復方向為正交的擺動方向，朝該車針方向擺動，以捕捉針線紗圈，進行一鉤線作業，透過重複此上下位移與鉤線作業以於布上車縫出線跡。具體來說，當車針由布的上方向下位移時，車針的前端會因貫穿布產生的阻力、車針向下位移時針線的張力的強度等原因，而會有偏離正常運動軌跡而彎曲的情況，當車針位移至最低點後再向上位移時，鉤針朝該車針方向搖擺穿過針線紗圈，隨後該車針再次由上往下位移，而鉤針則往遠離該車針方向搖擺並脫離針線紗圈。然而，當鉤針來回進行搖擺時，鈎針搖擺運動的軌跡是緊鄰車針，因此當車針前端產生軌跡偏移或彎曲時，會影響到鉤針的運動，造成跳線、斷針等問題。In the process of sewing the sewing machine, a bur is penetrated from the top of a cloth to the cloth, and enters a lowest point, and then moves upward from the lowest point and leaves the cloth. In addition, while the bur is performing the reciprocating sewing operation, a crochet is further oscillated toward the stylus direction in a swing direction orthogonal to the reciprocating direction of the stylus to capture the needle loop and perform the stitching. A hook line operation, by repeating this up and down displacement and hook line work to sew the stitches on the cloth. Specifically, when the bur is displaced downward from the top of the cloth, the front end of the bur will be bent away from the normal motion trajectory due to the resistance generated by the penetrating cloth, the strength of the tension of the needle when the stylus is displaced downward, and the like. In the case, when the stylus is displaced to the lowest point and then displaced upward, the crochet swings through the needle loop in the direction of the bur, and then the bur is again displaced from top to bottom, and the crochet swings away from the stylus. And off the needle loop. However, when the crochet swings back and forth, the trajectory of the crochet swing is close to the bur, so when the trajectory is offset or bent at the front end of the bur, the movement of the crochet is affected, causing problems such as jumpers and broken needles.
為解決上述問題，目前一般縫紉機包含一送布軸桿、一設置於該送布軸桿上的前護針塊、一鉤針、一設置於該鉤針上的護針桿、以及一車針組，該護針桿與該鉤針平行設置並受該鉤針連動而同步運動。在進行車縫作業時，該前護針塊受該送布軸桿連動向該車針組擺動，同時該鉤針連動該護針桿向該車針組擺動，透過該護針桿與該前護針塊保護該車針組，避免該車針組產生軌跡偏移或彎曲，除此之外，該護針桿同時也推移該車針組一側的針線，令部分針線穿過該車針組形成針線紗圈供該鉤針穿過。然而，該護針桿由該車針組的側面往與車縫方向正交的方向搖擺，也就是說該護針桿係由針線的側面推移，在高速車縫的情況下，容易推歪，造成針線紗圈口徑過小而無法供該鉤針穿過，進而導致針線打結或斷線等問題。In order to solve the above problems, the conventional sewing machine comprises a feed shaft, a front needle guard disposed on the feed shaft, a crochet, a needle guard disposed on the crochet, and a needle set. The needle guard is disposed in parallel with the crochet and is synchronously moved by the crochet. When the sewing operation is performed, the front needle guard block is oscillated by the feed shaft to the needle group, and the crochet joint swings the needle guard to the needle group, and the needle guard and the front guard are transmitted through the needle guard The needle block protects the stylus set to prevent the yoke group from being displaced or bent. In addition, the needle guard also shifts the needle thread on one side of the trocar group, so that a part of the needle thread passes through the bur needle set. A needle loop is formed for the crochet to pass through. However, the needle guard is swayed from the side of the needle group in a direction orthogonal to the sewing direction, that is, the needle guard is moved by the side of the needle thread, and in the case of high-speed sewing, it is easy to push. The needle thread loop is too small to pass the crochet, which causes problems such as knotting or disconnection of the needle thread.
對此，本案申請人曾於2014年向中華民國智慧財產局提出了『縫紉機的護針結構』之專利申請，該專利案之申請號為TW103107575。該專利案透過一前護部以及一得相對送布軸桿進行擺動的護針組對該車針實施護針，但該專利案之護針組受該送布軸桿連續性之帶動，僅能對該車針進行短暫的護針，而無法確實地對該車針實施護針，仍會有上述問題之發生。In this regard, the applicant of the case filed a patent application for the "needle structure of the sewing machine" to the Intellectual Property Office of the Republic of China in 2014. The application number of the patent application is TW103107575. The patent case protects the bur by a front guard and a guard pin group that swings relative to the feed shaft, but the needle guard of the patent is driven by the continuity of the feed shaft, only The needle can be temporarily shimmed, and the bur is not reliably applied to the bur, and the above problem still occurs.
本發明之主要目的，在於解決習用護針結構無法延長對車針之護針時間的問題。The main object of the present invention is to solve the problem that the conventional needle guard structure cannot extend the needle guarding time of the needle.
為達上述目的，本發明提供一種縫紉機的護針機構，該縫紉機具有一縫紉機體、至少一裝配於該縫紉機體上並受驅動行車縫作業的車針、一裝配於該縫紉機體上的送布進給驅動組件，以及併排設置於該縫紉機體內且分別受該進給驅動組件推動的一前移動齒推拉桿及一後移動齒推拉桿，該前移動齒推拉桿一端接設該進給驅動組件，另端則設有一前送布齒，該後移動齒推拉桿一端接設該進給驅動組件，另端則設有一後送布齒，該前送布齒與該後送布齒分隔設置界定出一下針空間，該護針結構包含有一固定護針件以及一活動護針件。該對應該下針空間固設於該前移動齒推拉桿之上，該活動護針件設置於該前移動齒推拉桿朝遠離該前送布齒方向延伸形成的一組裝部之上，該活動護針件包含有一樞接於該組裝部並受該前移動齒推拉桿帶動的帶動連桿及一軸接於該縫紉機體上並與該帶動連桿樞接的護針連桿，該護針連桿具有一與該帶動連桿樞接的連接部，一設於相對該連接部另端且對應該固定護針件設置的護針部，以及一介於該連接部與該護針部之間並與該縫紉機體軸接形成一活動支點的安裝部，其中，該連接部位於該安裝部的下方。In order to achieve the above object, the present invention provides a needle guarding mechanism for a sewing machine, the sewing machine having a sewing machine body, at least one bur attached to the sewing machine body and driven by the sewing machine, and a feeding machine assembled on the sewing machine body a feed drive assembly, and a front moving tooth push rod and a rear moving tooth push rod which are respectively disposed in the sewing machine body and are respectively driven by the feed drive assembly, and the front moving tooth push rod is connected to the feed drive assembly at one end The other end is provided with a front feed tooth, the rear movable tooth push-pull rod is connected to the feed drive assembly at one end, and the other end is provided with a rear feed tooth, and the front feed tooth is separated from the rear feed tooth. The needle space is included, and the needle guard structure includes a fixed needle guard and a movable needle guard. The pair of lower needle spaces are fixed on the front moving tooth push rod, and the movable needle guard is disposed on an assembly portion of the front moving tooth push rod extending away from the front feed tooth, the activity The needle guard comprises a driving link pivotally connected to the assembly portion and driven by the front moving tooth push rod and a needle guard link pivotally connected to the sewing machine body and pivotally connected to the driving link. The rod has a connecting portion pivotally connected to the driving link, a needle guard portion disposed at the other end opposite to the connecting portion and corresponding to the fixed needle guard member, and a gap between the connecting portion and the needle guard portion A mounting portion that is coupled to the sewing machine body to form a movable fulcrum, wherein the connecting portion is located below the mounting portion.
於一實施例中，該前移動齒推拉桿受該送布進給驅動組件驅動而相對該縫紉機體行一橢圓軌跡，該橢圓軌跡包含有連續變化的一平滑區段及一轉折區段，該活動護針件受該前移動齒推拉桿推動而具有一於該前移動齒推拉桿行該平滑區段時令該護針連桿朝該固定護針件往復擺動以與該固定護針件共同對該車針實施護針的第一行程，以及一於該前移動齒推拉桿行該轉折區段時延緩該護針連桿擺動的第二行程。In one embodiment, the front moving tooth push-pull rod is driven by the feed feeding drive assembly to perform an elliptical trajectory with respect to the sewing machine body, the elliptical trajectory comprising a smoothing section and a turning section continuously changing. The movable needle guard is pushed by the front moving tooth push rod to have a smooth section of the front moving tooth push rod row, and the needle guard link is reciprocally oscillated toward the fixed needle guard to be common with the fixed needle guard A first stroke of the needle is applied to the needle, and a second stroke of the needle guard swing is delayed when the front moving tooth push rod is in the turning section.
於一實施例中，該護針連桿具有一設於該護針部與該安裝部之間的轉折部。In an embodiment, the needle guard has a turning portion disposed between the needle guard portion and the mounting portion.
於一實施例中，該活動護針件具有一設於該護針部並與該固定護針件相對的護針擋板。In one embodiment, the movable needle guard has a needle guard disposed on the needle guard and opposite the fixed needle guard.
於一實施例中，該前移動齒推拉桿具有一設於該組裝部並樞接該帶動連桿的樞軸。In an embodiment, the front moving tooth push-pull rod has a pivot shaft disposed on the assembly portion and pivotally connecting the driving link.
於一實施例中，該活動護針件具有一設於該安裝部並固定於該縫紉機體上的安裝軸。In one embodiment, the movable needle guard has a mounting shaft disposed on the mounting portion and fixed to the sewing machine body.
透過本發明上述結構，相較於習用具有以下特點： 本發明透過改變該活動護針件所具有之該護針連桿於護針過程中的帶動點以及活動支點，令該活動護針件得操作於該第一行程及該第二行程，使該活動護針件於該第二行程中降低該護針連桿的位移作動量，進而得以延長該活動護針件與該固定護針件共同對該車針實施護針的時間。Through the above structure of the present invention, the present invention has the following features: The present invention has the following advantages: The movable needle guard has the movable point of the movable needle guard in the needle-protecting process and the movable fulcrum. Operating the first stroke and the second stroke to reduce the displacement actuation force of the needle guard link in the second stroke, thereby extending the movable needle guard member and the fixed needle guard member The time for the needle to be applied to the needle.
有關本發明之詳細說明及技術內容，現就配合圖式說明如下：The detailed description and technical contents of the present invention will now be described as follows:
請參閱圖1及圖2，如圖所示，本發明護針結構1係裝配於一縫紉機2上，該縫紉機2具有一縫紉機體21、至少裝配於該縫紉機體21上並受驅動行一車縫作業的車針22、一裝配於該縫紉機體21上的送布進給驅動組件23，以及併排設置於該縫紉機體21內且分別受該送布進給驅動組件23推動的一前移動齒推拉桿24及一後移動齒推拉桿25。其中，該前移動齒推拉桿24一端接設該進給驅動組件23，另端則設有一前送布齒241，該後移動齒推拉桿25一端接設該送布進給驅動組件23，另端則設有一後送布齒251。進一步地，該前送布齒241與該後送布齒251分隔設置而界定出一下針空間26，本發明該前移動齒推拉桿24受該送布進給驅動組件23的驅動而相對該縫紉機體21行一橢圓軌跡，而該車針22則於該前移動齒推拉桿24受該送布進給驅動組件23帶動的同時，相對該下針空間26進行往復運動而實施該車縫作業。再者，於本發明實施例中，該前移動齒推拉桿24更具有一朝遠離該前送布齒241方向延伸形成的一組裝部242，進一步來說，該組裝部242為該前移動齒推拉桿24朝遠離該前送布齒241方向突出之結構。Referring to FIG. 1 and FIG. 2, the needle guard structure 1 of the present invention is mounted on a sewing machine 2 having a sewing machine body 21, at least mounted on the sewing machine body 21, and driven by a vehicle. a burr 22 for sewing work, a feed feed drive assembly 23 mounted on the sewing machine body 21, and a front moving tooth which is disposed side by side in the sewing machine body 21 and urged by the feed feed drive unit 23, respectively. The push rod 24 and the rear moving tooth push rod 25. The front moving tooth push-pull rod 24 is connected to the feed drive assembly 23 at one end, and the front feed tooth 241 is disposed at the other end. The rear movable tooth push-pull rod 25 is connected to the feed feed drive assembly 23 at one end. The end is provided with a rear feed tooth 251. Further, the front feed dog 241 is spaced apart from the rear feed dog 251 to define a lower needle space 26. The front movable tooth push-pull rod 24 of the present invention is driven by the feed feed drive assembly 23 relative to the sewing machine. The body 21 has an elliptical trajectory, and the burr 22 performs the sewing operation by reciprocating the lower needle space 26 while the front moving tooth push-pull rod 24 is driven by the feed feeding drive unit 23. Furthermore, in the embodiment of the present invention, the front moving tooth push-pull rod 24 further has an assembly portion 242 extending away from the front feed dog 241. Further, the assembly portion 242 is the front moving tooth. The push-pull rod 24 is configured to protrude away from the front feed dog 241.
承上，本發明該護針結構1裝配於該前移動齒推拉桿24之上，以於該車針22行該車縫作業的同時，對該車針22實施護針。該護針結構1包含有一固定護針件11以及一活動護針件12。其中，該固定護針件11對應該下針空間26固設於該前移動齒推拉桿24之上，換言之，本發明該固定護針件11鄰設該前送布齒241且面對該下針空間26，以於該車針22實施該車縫作業時對其進行護針。又，本發明該固定護針件11的護針位置即為該車針22行該車縫作業進入該下針空間26內的相對位置。另一方面，該活動護針件12設置於該前移動齒推拉桿24的該組裝部242，該活動護針件12包含有一樞接於該組裝部242並受該前移動齒推拉桿24帶動的帶動連桿13及一軸接於該縫紉機體21上並與該帶動連桿121樞接的護針連桿14。進一步地，本發明該前移動齒推拉桿24具有一設於該組裝部242並樞接該帶動連桿13的樞軸243，該帶動連桿13具有一樞接於該樞軸243之上的第一端131，以及一相對該第一端131並與該活動護針件12樞接的第二端132。又，該護針連桿14具有一與該帶動連桿13之該第二端132樞接的連接部141、一設於相對該連接部141另端且對應該固定護針件11設置的護針部142，以及一介於該連接部141與該護針部142之間並與該縫紉機體21軸接形成一活動支點的安裝部143。進一步地，於本發明實施時，係令該連接部141位於該安裝部143的下方。再者，該活動護針件12具有一設於該安裝部143並固定於該縫紉機體21上的安裝軸15，以形成該活動支點。又，本發明該活動護針件12得進一步具有一設於該護針部142並與該固定護針件11相對的護針擋板16，該護針擋板16係受該護針連桿14的帶動，而朝該固定護針件11方向位移，對進入該下針空間26的該車針22進行護針。除此之外，本發明該護針連桿14更得根據其受帶動所產生之擺動軌跡於該護針部142與該安裝部143之間設有一轉折部144，其態樣可見圖2。According to the present invention, the needle guard structure 1 of the present invention is mounted on the front moving tooth push-pull rod 24 to perform the stitching operation on the bur needle 22 while the burr 22 performs the sewing work. The needle guard structure 1 includes a fixed needle guard 11 and a movable needle guard 12. The fixed needle guard 11 is fixed to the front moving tooth push-pull rod 24 corresponding to the lower needle space 26, in other words, the fixed needle guard 11 of the present invention is adjacent to the front feed dog 241 and faces the lower The needle space 26 is used to shield the needle 22 when the sewing operation is performed. Further, the needle guard position of the fixed needle guard 11 of the present invention is the relative position of the needle 22 in the sewing operation into the lower needle space 26. On the other hand, the movable needle guard 12 is disposed on the assembly portion 242 of the front moving tooth push-pull rod 24, and the movable needle guard 12 includes a pivoting member 242 and is driven by the front moving tooth push-pull rod 24. The driving link 13 and a pin guard link 14 connected to the sewing machine body 21 and pivotally connected to the driving link 121. Further, the front moving tooth push-pull rod 24 has a pivot 243 disposed on the assembly portion 242 and pivotally connected to the driving link 13 . The driving link 13 has a pivotal connection on the pivot 243 . The first end 131 has a second end 132 opposite to the first end 131 and pivotally connected to the movable needle guard 12. Moreover, the needle guard 14 has a connecting portion 141 pivotally connected to the second end 132 of the driving link 13, and a connecting portion disposed at the opposite end of the connecting portion 141 and corresponding to the fixing of the needle guard 11 The needle portion 142 and a mounting portion 143 interposed between the connecting portion 141 and the needle guard portion 142 and axially connected to the sewing machine body 21 form a movable fulcrum. Further, in the implementation of the present invention, the connecting portion 141 is located below the mounting portion 143. Furthermore, the movable needle guard 12 has a mounting shaft 15 disposed on the mounting portion 143 and fixed to the sewing machine body 21 to form the movable fulcrum. Moreover, the movable needle guard 12 of the present invention further has a needle guard 16 disposed on the needle guard 142 opposite to the fixed needle guard 11, and the needle guard 16 is received by the needle guard The driving of 14 is displaced in the direction of the fixed needle guard 11, and the needle 22 entering the lower needle space 26 is needle-protected. In addition, the needle guard link 14 of the present invention is further provided with a turning portion 144 between the needle guard portion 142 and the mounting portion 143 according to the swinging track generated by the driving, and the aspect thereof can be seen in FIG.
請參閱圖6至圖7-5所示，承上所述，本發明該前移動齒推拉桿24係受該送布進給驅動組件23帶動而行該橢圓軌跡，就如圖6所示，該橢圓軌跡有連續變化的一平滑區段31以及一轉折區段32，換言之，該橢圓軌跡是依序變化於該平滑區段31及該轉折區段32，如該平滑區段31至該轉折區段32，再至該平滑區段31，依此循環。於此，首先說明，本發明該前移動齒推拉桿24於實施送布的初始，該活動護針件12之該護針連桿14未產生作動，而相對該固定護針件1一距離，其態樣如圖7-1所示。此時，該前移動齒推拉桿24係處於該橢圓軌跡的該平滑區段31，其作動點就如圖6所標示的A。此後，該前移動齒推拉桿24受該送布進給驅動組件23帶動而行該橢圓軌跡，由該平滑區段31進入到該該轉折區段32的初始，其作動點就如圖6所標示的B，此時，該帶動連桿13受該前移動齒推拉桿24的活動軌跡作用而產生了擺動，令該活動護針件12進入一第一行程，更具體說明，並請參閱圖7-2，本發明該第一行程是指該前移動齒推拉桿24行於該平滑區段31時，該帶動連桿13以該第二端132帶動該護針連桿14的該連接桿141，令該護針連桿14朝該固定護針件11進行往復擺動，而與該固定護針件11共同對進入該下針空間26內的該車針22實施護針。接著，該送布進給驅動組件23持續帶動該前移動齒推拉桿24行該橢圓軌跡，由該平滑區段31進入該轉折區段32，此時作動點就如圖6所標示的C。請參閱圖7-3，此時，該活動護針件12進入一第二行程，於該第二行程中，由於該護針連桿13的帶動施力點(即該連接部141)低於該安裝部143所形成的該活動支點，而令該護針連桿13於該第二行程中，僅會進行極小位移變化之作動，換言之，該活動護針件12於該第二行程中大幅降低了該護針連桿14的擺動，而延續了該活動護針件12對該車針22實施護針的時間。接著，該送布進給驅動組件23繼續帶動該前移動齒推拉桿24行該橢圓軌跡，而由該轉折區段32準備進入該平滑區段31，此時的作動點就如圖6所示的D，並請參閱圖7-4，於此階段，該活動護針件12仍然處於該第二行程，而延長了對該車針22的護針時間。此後，該前移動齒推拉桿24持續受該送布進給驅動組件23的帶動而續行該橢圓軌跡，由該轉折區段32進入該平滑區段31，令該帶動連桿13受該前移動齒推拉桿24的帶動，而帶動該護針擋板16朝遠離該固定護針件11的方向位移，復歸至未實施的態樣，就如圖7-5所示。如此一來，本發明即可於該車針22進行車縫作業而進入該下針空間26時，令該活動護針件12與該固定護針件11對其共同實施護針，且透過連桿支點的設計，使該活動護針件12得延長其於該固定護針件11共同對該車針22進行護針的時間。Referring to FIG. 6 to FIG. 7-5, the front moving tooth push-pull rod 24 of the present invention is driven by the feed feed drive assembly 23 to perform the elliptical trajectory, as shown in FIG. The elliptical trajectory has a smoothing section 31 and a turning section 32 which are continuously changed. In other words, the elliptical trajectory is sequentially changed to the smoothing section 31 and the turning section 32, such as the smoothing section 31 to the turning point Section 32, and then to the smoothing section 31, circulate accordingly. Herein, first, the front moving tooth push-pull rod 24 of the present invention is initially applied, and the needle guard 14 of the movable needle guard 12 is not actuated, and is at a distance from the fixed needle guard 1 Its appearance is shown in Figure 7-1. At this time, the front moving tooth push-pull rod 24 is in the smooth section 31 of the elliptical trajectory, and its operating point is A as shown in FIG. Thereafter, the front moving tooth push-pull rod 24 is driven by the feed feed drive assembly 23 to perform the elliptical trajectory, and the smoothing section 31 enters the initial portion of the turning section 32, and the actuating point is as shown in FIG. Indicated B, at this time, the driving link 13 is oscillated by the active trajectory of the front moving tooth push-pull rod 24, so that the movable needle guard 12 enters a first stroke, more specifically, and see the figure 7-2, the first stroke of the present invention means that when the front moving tooth push-pull rod 24 is in the smooth section 31, the driving link 13 drives the connecting rod of the needle guard 14 with the second end 132. 141, the needle guard link 14 is reciprocally oscillated toward the fixed needle guard 11, and the needle guard 22 entering the lower needle space 26 is shimmed together with the fixed needle guard 11. Then, the feed feed drive assembly 23 continues to drive the front moving tooth push-pull rod 24 to the elliptical trajectory, and the smooth section 31 enters the turning section 32, and the starting point is C as indicated in FIG. Referring to FIG. 7-3, at this time, the movable needle guard 12 enters a second stroke, in which the driving point (ie, the connecting portion 141) of the needle guard 13 is lower than The movable fulcrum formed by the mounting portion 143 causes the needle guard link 13 to perform only a small displacement change in the second stroke. In other words, the movable needle guard 12 is substantially large in the second stroke. The swing of the needle guard 14 is lowered, and the time during which the movable needle guard 12 applies the needle to the needle 22 is continued. Then, the feed feed drive assembly 23 continues to drive the front moving tooth push-pull rod 24 to the elliptical trajectory, and the turning portion 32 is ready to enter the smoothing portion 31, and the operating point at this time is as shown in FIG. D, and referring to Figure 7-4, at this stage, the movable needle guard 12 is still in the second stroke, and the needle guard time for the needle 22 is extended. Thereafter, the front moving tooth push-pull rod 24 continues to be driven by the feed feed drive assembly 23 to continue the elliptical trajectory, and the turning section 32 enters the smooth section 31, so that the driving link 13 is subjected to the front The moving tooth push-pull rod 24 is driven to drive the needle guard 16 to move away from the fixed needle guard 11 and return to the unimplemented state, as shown in Figure 7-5. In this way, when the stylus 22 is engaged in the sewing operation and enters the lower needle space 26, the movable stylus member 12 and the fixed stylus member 11 are jointly affixed with a needle. The rod fulcrum is designed such that the movable needle guard 12 extends the time during which the fixed needle guard 11 collectively shields the needle 22.
綜上所述，本發明該護針結構應用於一縫紉機，而該縫紉機具有一縫紉機體、一前移動齒推拉桿及一後移動齒推拉桿。該護針結構裝配該前移動齒推拉桿，包含一固定護針件及一活動護針件。該固定護針件與該活動護針件對應設置，該活動護針件具有一樞接於該組裝部並受該前移動齒推拉桿帶動的帶動連桿及一軸接於該縫紉機體並與該帶動連桿樞接的護針連桿，該護針連桿具有一與該帶動連桿樞接的連接部，一設於相對該連接部另端且對應該固定護針件設置的護針部，及一介於該連接部與該護針部之間並與該縫紉機體軸接形成一活動支點的安裝部，該連接部位於該安裝部的下方。藉此，以令該活動護針件得於該車針進入該下針空間時提供較長時間的護針效果。In summary, the needle guard structure of the present invention is applied to a sewing machine having a sewing machine body, a front moving tooth push rod and a rear moving tooth push rod. The needle guard structure is equipped with the front moving tooth push rod, and comprises a fixed needle guard and a movable needle guard. The fixed needle guard is disposed corresponding to the movable needle guard, and the movable needle guard has a driving link pivotally connected to the assembly portion and driven by the front moving tooth push rod and a shaft coupled to the sewing machine body and the same a needle guard link for driving the connecting rod, the needle guard link has a connecting portion pivotally connected to the driving link, and a needle guard portion disposed at the other end opposite to the connecting portion and corresponding to the fixing needle member And a mounting portion between the connecting portion and the needle guard portion and axially connected to the sewing machine body to form a movable fulcrum, the connecting portion is located below the mounting portion. Thereby, the movable needle guard is provided with a needle guarding effect for a long time when the needle enters the lower needle space.
以上已將本發明做一詳細說明，惟以上所述者，僅爲本發明之一較佳實施例而已，當不能以此限定本發明實施之範圍，即凡依本發明申請專利範圍所作之均等變化與修飾，皆應仍屬本發明之專利涵蓋範圍內。The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Variations and modifications are still within the scope of the patents of the present invention.
1‧‧‧護針結構
11‧‧‧固定護針件
12‧‧‧活動護針件
13‧‧‧帶動連桿
131‧‧‧第一端
132‧‧‧第二端
14‧‧‧護針連桿
141‧‧‧連接部
142‧‧‧護針部
143‧‧‧安裝部
144‧‧‧轉折部
15‧‧‧安裝軸
16‧‧‧護針擋板
2‧‧‧縫紉機
21‧‧‧縫紉機體
22‧‧‧車針
23‧‧‧送布進給驅動組件
24‧‧‧前移動齒推拉桿
241‧‧‧前送布齒
242‧‧‧組裝部
243‧‧‧樞軸
25‧‧‧後移動齒推拉桿
251‧‧‧後送布齒
26‧‧‧下針空間
31‧‧‧平滑區段
32‧‧‧轉折區段1‧‧‧ needle structure
11‧‧‧Fixed needle guards
12‧‧‧ Activity needle guards
13‧‧‧Drive the connecting rod
131‧‧‧ first end
132‧‧‧ second end
14‧‧‧ needle guard
141‧‧‧Connecting Department
142‧‧‧ needle guard
143‧‧‧Installation Department
144‧‧‧ turning section
15‧‧‧Installation shaft
16‧‧‧ needle guard
2‧‧‧Sewing machine
21‧‧‧Sewing body
22‧‧‧ burs
23‧‧‧ Feed feed drive assembly
24‧‧‧Front moving tooth push rod
241‧‧‧ forward feed
242‧‧‧Assembly Department
243‧‧‧ pivot
25‧‧‧Moving tooth push rod
251‧‧‧After delivery
26‧‧‧needle space
31‧‧‧Smooth section
32‧‧‧ turning section
圖1，係本發明一實施例之縫紉機結構示意圖。 圖2，係本發明一實施例之縫紉機局部結構示意圖。 圖3，係本發明一實施例之分解示意圖。 圖4，係本發明一實施例之局部結構示意圖。 圖5，係本發明一實施例之另一方向之局部結構示意圖。 圖6，係本發明一實施例之橢圓軌跡示意圖。 圖7-1，係本發明一實施例之實施示意圖(一)。 圖7-2，係本發明一實施例之實施示意圖(二)。 圖7-3，係本發明一實施例之實施示意圖(三)。 圖7-4，係本發明一實施例之實施示意圖(四)。 圖7-5，係本發明一實施例之實施示意圖(五)。BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the structure of a sewing machine in accordance with an embodiment of the present invention. Figure 2 is a partial structural view of a sewing machine in accordance with an embodiment of the present invention. Figure 3 is an exploded perspective view of an embodiment of the present invention. 4 is a partial structural view of an embodiment of the present invention. Fig. 5 is a partial structural view showing another direction of an embodiment of the present invention. FIG. 6 is a schematic diagram of an elliptical trajectory according to an embodiment of the present invention. 7-1 is a schematic view (1) of an embodiment of the present invention. Figure 7-2 is a schematic view (2) of an embodiment of the present invention. Figure 7-3 is a schematic view (3) of an embodiment of the present invention. Figure 7-4 is a schematic view (4) of an embodiment of the present invention. 7-5 are schematic views (5) of an embodiment of the present invention.
1‧‧‧護針結構 1‧‧‧ needle structure
11‧‧‧固定護針件 11‧‧‧Fixed needle guards
12‧‧‧活動護針件 12‧‧‧ Activity needle guards
13‧‧‧帶動連桿 13‧‧‧Drive the connecting rod
131‧‧‧第一端 131‧‧‧ first end
132‧‧‧第二端 132‧‧‧ second end
14‧‧‧護針連桿 14‧‧‧ needle guard
141‧‧‧連接部 141‧‧‧Connecting Department
142‧‧‧護針部 142‧‧‧ needle guard
143‧‧‧安裝部 143‧‧‧Installation Department
144‧‧‧轉折部 144‧‧‧ turning section
15‧‧‧安裝軸 15‧‧‧Installation shaft
16‧‧‧護針擋板 16‧‧‧ needle guard
21‧‧‧縫紉機體 21‧‧‧Sewing body
22‧‧‧車針 22‧‧‧ burs
24‧‧‧前移動齒推拉桿 24‧‧‧Front moving tooth push rod
241‧‧‧前送布齒 241‧‧‧ forward feed
242‧‧‧組裝部 242‧‧‧Assembly Department
25‧‧‧後移動齒推拉桿 25‧‧‧Moving tooth push rod
251‧‧‧後送布齒 251‧‧‧After delivery
26‧‧‧下針空間 26‧‧‧needle space
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104116343A TWI605168B (en) | 2015-05-21 | 2015-05-21 | Sewing machine needle guard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW104116343A TWI605168B (en) | 2015-05-21 | 2015-05-21 | Sewing machine needle guard |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201641774A TW201641774A (en) | 2016-12-01 |
| TWI605168B true TWI605168B (en) | 2017-11-11 |
Family
ID=58055540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW104116343A TWI605168B (en) | 2015-05-21 | 2015-05-21 | Sewing machine needle guard |
Country Status (1)
| Country | Link |
|---|---|
| TW (1) | TWI605168B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI621747B (en) * | 2017-01-13 | 2018-04-21 | Ming Jang Sewing Machine Co Ltd | Needle structure of four-needle six-wire sewing machine |
-
2015
- 2015-05-21 TW TW104116343A patent/TWI605168B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| TW201641774A (en) | 2016-12-01 |
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