JPH0655585U - Sewing machine threading device - Google Patents
Sewing machine threading deviceInfo
- Publication number
- JPH0655585U JPH0655585U JP117593U JP117593U JPH0655585U JP H0655585 U JPH0655585 U JP H0655585U JP 117593 U JP117593 U JP 117593U JP 117593 U JP117593 U JP 117593U JP H0655585 U JPH0655585 U JP H0655585U
- Authority
- JP
- Japan
- Prior art keywords
- pin
- support shaft
- needle
- guide block
- sewing machine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Sewing Machines And Sewing (AREA)
Abstract
(57)【要約】
【目 的】フック部を支持する支持軸の上下動並びに位
置決め、及び位置決めされた所定のレベルでのみ回動で
きるようにするための機構をコンパクトにして設計上の
自由度を持つことができ、また針棒に取着される部材を
コンパクトにして慣性上の悪影響を少なくする。
【構 成】針棒２に取着される位置決めブロック５に、
ピンが係合する受け棚６と、ピン１２が嵌合可能な溝７
を形成する。バネによって常に引上げられるように付勢
され、操作レバー１８によって昇降かつ回動操作される
支持軸３に、回転止めされて上下動のみ可能なガイドブ
ロック１１を装着し、ガイドブロックには支持軸３に突
設されるピン１２が嵌合して回動可能な水平溝１３ａと
水平溝端上部にピン１２が嵌合係止し、ピンの回り止め
を行う窪み１３ｂを形成する。ガイドブロック１１とピ
ン１２との間にはコイルバネが設けられ、ガイドブロッ
クを常に押下げる作用を行う。
(57) [Summary] [Objective] The mechanism for vertically moving and positioning the support shaft that supports the hook, and allowing it to rotate only at a predetermined level that has been made compact and has a degree of freedom in design. In addition, the member attached to the needle bar is made compact to reduce the adverse effect on inertia. [Composition] The positioning block 5 attached to the needle bar 2
The receiving rack 6 with which the pin engages, and the groove 7 with which the pin 12 can fit
To form. A guide block 11 that is prevented from rotating and can move only up and down is attached to a support shaft 3 that is urged by a spring so as to be constantly pulled up, and is vertically moved and rotated by an operation lever 18. A pin 12 protruding from the upper end of the horizontal groove 13a is fitted and rotatable, and a pin 13 is fitted and locked on the upper end of the horizontal groove to form a recess 13b for preventing the pin from rotating. A coil spring is provided between the guide block 11 and the pin 12 to constantly push down the guide block.
Description
【０００１】[0001]
本考案は、ミシンの糸通し装置に関し、ことにつまみを押下げて先端のフック 部を針の糸孔と同一レベルに位置決めしたのち、撮みを水平に往復回動操作する ことにより、フック部で針糸を引っ掛けて針への糸通しを行うようにしたミシン の糸通し装置に関する。 The present invention relates to a threading device for a sewing machine, and in particular, the knob is pushed down to position the hook portion at the tip at the same level as the thread hole of the needle, and then the hook portion is horizontally reciprocally rotated to move the hook portion. The present invention relates to a threading device for a sewing machine in which a needle thread is hooked to thread a needle.
【０００２】[0002]
ミシンの糸通し装置には、つまみの押下げ操作により、フック部を降下させな がら旋回させ、つまみを最下端まで押下げてフック部を針の糸孔に通した時点で 、つまみを解放することにより、バネの作用によってフック部を上記経路を辿っ て復動させるようにしたタイプのものゝほか、つまみを押下げて水平に往復回動 操作する上述するタイプのものがある。このうち、後者のタイプのものは、つま みを押下げる操作と、水平に往復回動させる操作が必要であるが、針の糸孔より 糸を確実に引出して糸通しを確実に行える利点がある。 In the threading device of the sewing machine, push down the knob to rotate it while lowering the hook, and push down the knob to the lowermost end to release the knob when the hook passes through the thread hole of the needle. As a result, there are a type in which the hook portion is moved back along the above path by the action of the spring, and a type in which the knob is pushed down to make a horizontal reciprocating rotation operation. Of these, the latter type requires an operation of pushing down the knob and an operation of reciprocating horizontally, but it has the advantage that the thread can be reliably pulled out from the thread hole of the needle and threaded securely. is there.
【０００３】 実公昭５５−３４０６７号には、後者のタイプとして、針棒に保持体を固定す る一方、針棒と平行に摺動かつ回動可能に軸支され、常にはバネによって上向き に持上げられるように付勢される支持軸にピンを側方に突設すると共に、つまみ を突設し、また下端にはフック部が設けられ、つまみを押下げてピンを保持体の 係合部に係合させたのち、つまみを回動させると、フック部が針の糸孔に通され るようにした糸通し装置が提案されている。In Japanese Utility Model Publication No. 55-34067, as the latter type, a holding body is fixed to a needle bar, while it is axially supported so as to be slidable and rotatable parallel to the needle bar and always upward by a spring. The support shaft is biased so that it can be lifted, and the pin is projected to the side, and the knob is projected.The lower end is provided with a hook part, and the pin is pushed down to engage the pin with the engaging part of the holding body. A threading device has been proposed in which the hook portion is passed through the thread hole of the needle when the knob is rotated after being engaged with.
【０００４】[0004]
上述する糸通し装置は、フック部が針の糸孔と同一レベルになったときのみ、 支持軸が回動できるようになっており、フック部のレベルと針の糸孔のレベルが 同じレベルにならないと、ピンの動きが保持体に上向きに突出形成される案内壁 によって阻まれ、これにより支持軸が回動不能となってフック部が針等に係合し 、破損することがないようにしてあるが、支持軸を下げ始めてフック部のレベル が針の糸孔のレベルと同じレベルになるまでの間、支持軸が回動しないようにす るには、案内壁を垂直方向にかなり長く伸ばさねばならず、高速で上下動する針 棒にこうした長尺の部材を取付けるのは慣性上好ましくない。 In the threading device described above, the support shaft can be rotated only when the hook portion is at the same level as the needle thread hole, and the level of the hook portion and the needle thread hole are at the same level. Otherwise, the movement of the pin will be blocked by the guide wall that projects upward from the holder, which will prevent the support shaft from rotating and the hook portion from engaging with the needle, etc., preventing damage. However, in order to prevent the support shaft from rotating until the level of the hook reaches the same level as the thread hole of the needle after lowering the support shaft, the guide wall must be lengthened in the vertical direction. It is unfavorable in terms of inertia to attach such a long member to the needle bar that must be extended and moves up and down at high speed.
【０００５】 しかも、上述する保持体やピンを案内する案内体の構造は、針棒駆動機構の狭 く限られたスペースには嵩張り過ぎて好ましくなく、支持軸の上下動並びに位置 決め、更には所定のレベルでのみ回動できるようにするための機構は、設計上の 自由度を持つため、できるだけコンパクトにすることが望まれる。 本考案は、かゝる点に鑑みてなされたもので、支持軸の上下動並びに位置決め 、更には位置決めされた所定のレベルでのみ回動できるようにするための機構を コンパクトにして設計上の自由度を持つことができるようにすると共に、針棒に 取着される部材をコンパクトにして慣性上の悪影響を少なくしたミシンの糸通し 装置を提供しようとするものである。Moreover, the above-mentioned structure of the holding body and the guide body for guiding the pin is not preferable because it is too bulky in the narrow and limited space of the needle bar drive mechanism, and the vertical movement and positioning of the support shaft, Since the mechanism for allowing rotation at a predetermined level has a degree of freedom in design, it is desirable to make it as compact as possible. The present invention has been made in view of the above points, and has a compact and designed mechanism for vertically moving and positioning the support shaft, and further, allowing the support shaft to rotate only at a predetermined level. It is an object of the present invention to provide a threading device for a sewing machine, which has a high degree of freedom and a member attached to the needle bar is made compact to reduce adverse effects on inertia.
【０００６】[0006]
本考案のミシンの糸通し装置は、針棒と平行して上下動かつ回動可能に軸支さ れ、上部にピンを側方に突出して設けた支持軸と、支持軸を常には上方に引上げ るように付勢する第１のバネと、支持軸に装着され、ガイド手段により案内され て支持軸に沿い上下動するガイドブロックと、ガイドブロックに形成され、支持 軸を中心とする上記ピンの水平方向の回動を案内する水平部及び水平部端より上 向きに形成され、上記ピンが嵌合係止する係止部とよりなる案内部と、支持軸に 装着され、下端がガイドブロックに、上端が上記ピンにそれぞれ係合し、上記案 内部をピンに押付ける第２のバネと、針棒に固着され、ガイドブロックの位置決 めを行う位置決め部材と、支持軸に設けられる操作レバーと、支持軸下端に支持 され、針の目孔に挿通可能なフック部とより構成される。 The threading device of the sewing machine of the present invention is axially supported so as to be vertically movable and rotatable in parallel with the needle bar, and has a support shaft provided with a pin protruding sideways at the upper part and the support shaft always upward. A first spring that biases the support shaft, a guide block that is mounted on the support shaft and that is guided by guide means and moves up and down along the support shaft, and the pin that is formed on the guide block and has the support shaft as a center. The guide part is formed upward from the horizontal part and the end of the horizontal part for guiding the horizontal rotation of the, and is attached to the support shaft, and the lower end is attached to the support shaft. In addition, a second spring whose upper end engages with the pin and presses the inside of the case against the pin, a positioning member fixed to the needle bar for positioning the guide block, and an operation provided on the support shaft. It is supported by the lever and the lower end of the support shaft, and More configured and can be inserted through the hook portion.
【０００７】 本装置において、針への糸通しは次のようにして行われる。 操作レバーを押下げ、支持軸を降下させると、第２のバネの作用により係止部 でピンに押し付けられるガイドブロックが支持軸と一体となって降下する。ガイ ドブロックが位置決め部材に係止してその動きが止められたのち、なおも操作レ バーを押下げると、ピンが第２のバネを圧縮して支持軸と共に降下する。ピンが 嵌合する案内部の係止部により外れた時点で、フック部が針の目孔と同一レベル となり、この状態で操作レバーを一方向に回動操作すると、ピンが案内部の水平 部に案内されて支持軸と共に回動し、フック部が針の目孔に挿通される。挿通後 、操作レバーを復動させると、フック部が糸を引掛け、針の目孔より抜け出て糸 のループを目孔より突出させる。ついで、操作レバーを解放すると、第２のバネ の作用により、ガイドブロックが支持軸に対し押下げられて、ピンを係止部に嵌 合係止させると共に、第１のバネの作用により支持軸が上昇する。In this device, threading through the needle is performed as follows. When the operating lever is pushed down and the support shaft is lowered, the guide block, which is pressed against the pin by the locking portion by the action of the second spring, is lowered together with the support shaft. After the guide block is locked to the positioning member and its movement is stopped, when the operating lever is still pushed down, the pin compresses the second spring and descends together with the support shaft. When the pin is released by the locking part of the guide part to which it fits, the hook part becomes at the same level as the eye hole of the needle. Is guided to rotate with the support shaft, and the hook portion is inserted into the eye hole of the needle. After insertion, when the operating lever is moved back, the hook part catches the thread, and it comes out of the eye hole of the needle and the loop of the thread projects from the eye hole. Then, when the operating lever is released, the guide block is pushed down against the support shaft by the action of the second spring, the pin is fitted and locked in the locking portion, and the action of the first spring causes the support shaft to move. Rises.
【０００８】 ピンが係止部に嵌合係止した状態で、ガイドブロックを降下させ、位置決め部 材で位置決めしたのちピンが係止部より外れ、フック部が針の目孔と同一レベル になるまでは、フック部は回動できないから、フック部が針等と係合して破損す ることはない。 また針棒に取着される位置決め部材は、ガイドブロックに係合する機能を有し ていればよいから、構造が簡単で、コンパクトに構成することができ、また案内 部を有するガイドブロックは、案内部の係止部に嵌合するピンの回り止めの機能 を有していればよいから、係止部を短くすることができ、したがってガイドブロ ックをコンパクトにすることができる。With the pin fitted and locked in the locking part, the guide block is lowered and positioned by the positioning member, then the pin comes off the locking part, and the hook part becomes at the same level as the eye hole of the needle. Until then, the hook part cannot be rotated, so the hook part will not be damaged by engaging with the needle or the like. Further, since the positioning member attached to the needle bar has only to have a function of engaging with the guide block, the structure is simple and compact, and the guide block having the guide portion is Since it suffices to have a function of preventing rotation of the pin fitted to the locking portion of the guide portion, the locking portion can be shortened and therefore the guide block can be made compact.
【０００９】 上述する装置において、フック部の位置決め、すなわち針の目孔のレベルに一 致させるのは、ガイドブロックの位置決め部材への係合と、第２のバネの作用に よるピンの水平部への係合とによって行われるが、位置決めが容易に行えるよう に、好ましくはピンを延長させて反対側にも突出させ、延長する突出端で位置決 め部材に係合させうるようにするのが望ましい。この場合、操作レバーを押下げ ると、先ずガイドブロックが位置決め部材に係合し、ついでピンの延長する突出 端が位置決め部材に係合し、支持軸の降下が阻止され、フック部の位置決めが行 えるようになり、操作レバーを単に限度まで押し下げるだけで、フック部の位置 決めが行えるようになる。またピンを支持軸の両側に突出させることによって第 ２のバネを２ヵ所の対称位置で押え、バネを片上がりすることなく安定して支持 することができるようになる。In the above-mentioned device, positioning of the hook portion, that is, matching with the level of the eye hole of the needle, is caused by the engagement of the guide block with the positioning member and the horizontal portion of the pin by the action of the second spring. However, for ease of positioning, the pins are preferably extended to project in the opposite direction so that they can engage the positioning member at the extending protruding end. Is desirable. In this case, when the operation lever is pushed down, the guide block first engages with the positioning member, and then the protruding end of the pin engages with the positioning member, which prevents the support shaft from descending and positions the hook portion. Now you can position the hook by simply pushing down on the operating lever. Further, by projecting the pins on both sides of the support shaft, the second spring can be pressed at two symmetrical positions, and the spring can be stably supported without rising up.
【００１０】 なお、フック部が位置決めされた状態で水平に回動しうるように、すなわちピ ンの延長する突出端が位置決め部材に係合して水平に回動しうるようにするため に、位置決め部材には平坦な係合面を形成しておく必要がある。 ピンを延長し、反対側の突出端を位置決め部材に係合させることにより、位置 決めを行うようにした場合にはまた、ピンが係止部より離脱して回動するとき、 係合面の一側に係合面と一定の間隔を有して水平に突出する突出部を設けて係合 面との間に延長する突出端が嵌合するようにな溝を形成しておくのがより望まし い。延長する突出端が溝に嵌合した状態で、支持軸の第１のバネの作用による上 昇が位置決め部材によって規制されるため、操作レバーは第１のバネの作用に抗 して押さえておかなくても、フック部を針の目孔と同一レベルに維持することが でき、したがって操作レバーを限度まで押下げたのちは単に水平に回動操作する だけで針への糸通しを行うことができる。In order to allow the hook portion to be horizontally rotated while being positioned, that is, to allow the protruding end of the pin to engage with the positioning member and be horizontally rotated, It is necessary to form a flat engagement surface on the positioning member. When positioning is performed by extending the pin and engaging the protruding end on the opposite side with the positioning member, when the pin disengages from the locking part and rotates, It is more preferable to provide a protruding portion that horizontally protrudes on one side with a certain distance from the engaging surface and form a groove so that the protruding end extending between the engaging surface and the engaging surface fits. I don't want it. With the protruding end that extends being fitted in the groove, the positioning lever restricts the upward movement of the support shaft due to the action of the first spring, so keep the operating lever pressed against the action of the first spring. Even if the hook is not used, the hook can be maintained at the same level as the eye hole of the needle, so that the needle can be threaded simply by rotating it horizontally after pressing down the operating lever to the limit. it can.
【００１１】 針への糸通しは、針の目孔が押え金を上げたときの押え金よりも更に上方に位 置する針の上死点ないしその付近で行われるようにすることが望まれる。そのた めには、支持軸にストッパーを設け、ストッパーが支持軸を軸承する軸受に当た って降下を阻止されたとき、フック部が上死点ないしその付近に位置する針の目 孔のレベルに位置するようにストッパーの取付位置を設置するとよい。It is desirable that the threading of the needle be performed at or near the top dead center of the needle, which is located further above the presser foot when the eye hole of the needle is raised. . For this purpose, a stopper is provided on the support shaft, and when the stopper hits the bearing that supports the support shaft and is prevented from descending, the hook part of the needle hole located at or near the top dead center. The stopper should be installed so that it is located at the level.
【００１２】[0012]
図はジグザグミシンの糸通し装置について示すもので、上端を支点として左右 に振られる支持枠１には、針棒２と支持軸３が軸承され、針棒２は針棒抱き４で 図示しない主軸とクランク及びロッドを介して連結され、主軸の回動によって上 下動するようになっており、針棒抱き４の直上には位置決め部材である位置決め ブロック５が固着され、位置決めブロック５には支持軸３と対向する側の下部に 、側方にせり出す受け棚６を有すると共に、受け棚上方の上部中央に側方に向か って若干彎曲状にせり出し、受け棚６との間に後述するピンが嵌合しうる溝７を 形成する突出部８を有している。 The figure shows a threading device of a zigzag sewing machine. A needle bar 2 and a support shaft 3 are supported by a support frame 1 which is swung to the left and right with an upper end as a fulcrum, and the needle bar 2 is a needle bar holder 4 which is not shown in the drawings. It is connected via a crank and a rod to move up and down by the rotation of the main shaft. A positioning block 5 as a positioning member is fixed directly above the needle bar holder 4 and is supported by the positioning block 5. At the lower part on the side opposite to the shaft 3, there is a receiving shelf 6 that projects laterally, and in the upper center of the upper part of the receiving shelf, it projects laterally in a slightly curved shape, which will be described later with the receiving shelf 6. It has a protrusion 8 forming a groove 7 into which a pin can fit.
【００１３】 一方、支持軸３はバネ１０によって常に引上げられるように付勢されており、 その上部には支持枠１に形成される縦溝９に嵌合することにより回転止めされ、 縦溝９に案内されて上下動するガイドブロック１１が装着され、ガイドブロック １１には支持軸上部に支持軸３と直交して貫通されるピン１２（他側は上記溝７ に嵌合可能である）の一側が嵌合する水平溝１３ａと、水平溝上部に形成され、 ピン１２が嵌合係止する係止部としての窪み１３ｂとよりなる案内部１３が設け てある。そして支持軸３には上端をピン１２に、下端をガイドブロック１１にて 係合させたコイルバネ１４が装着され、バネ１４の作用によりガイドブロック１ １を押下げ、案内部１３がピン１２に押付けられるようになっている。On the other hand, the support shaft 3 is urged by a spring 10 so as to be constantly pulled up, and its upper portion is fitted into a vertical groove 9 formed in the support frame 1 so as to be prevented from rotating, and the vertical groove 9 A guide block 11 that moves up and down by being guided by the guide block 11 is mounted on the guide block 11. A guide portion 13 is provided, which includes a horizontal groove 13a into which one side fits and a recess 13b formed in the upper portion of the horizontal groove as a locking portion into which the pin 12 is fitted and locked. The support shaft 3 is attached with a coil spring 14 whose upper end is engaged with a pin 12 and whose lower end is engaged with a guide block 11. The guide block 11 is pushed down by the action of the spring 14, and the guide portion 13 is pressed against the pin 12. It is designed to be used.
【００１４】 支持軸３にはまた、下端に針１５の目孔１６に挿通可能なフック部１７を有す ると共に、その上に支持軸３の押下げ及び回動を行うための折りたゝみ可能な操 作レバー１８を有し、中間部に針への糸通しが針の上死点で行われるようにする ため、支持軸３の一定量以上の降下を阻止するストッパー１９を設け、ストッパ ー１９が支持枠１下端の側方に突出する支承部１ａに上方より係合して支持軸３ の降下が阻止されたとき、フック部１７のレベルが上死点に位置する針１５の目 孔１６と合致するようになっている。The support shaft 3 also has a hook portion 17 at the lower end that can be inserted into the eye hole 16 of the needle 15, and a folding portion for pushing down and rotating the support shaft 3 thereon. A movable lever 18 is provided, and a stopper 19 for preventing a certain amount of lowering of the support shaft 3 is provided in the middle part in order to thread the needle at the top dead center of the needle. When the stopper 19 is engaged with the support portion 1a projecting laterally from the lower end of the support frame 1 from above to prevent the support shaft 3 from descending, the level of the hook portion 17 of the needle 15 located at the top dead center. It is designed to match with the eye hole 16.
【００１５】 本装置は以上のように構成され，通常の糸通し操作を行わないときには、図１ 及び図３に示すように、支持軸３はバネ１０の作用により引上げられ、ストッパ ー１９が支持枠中間部の支承部１ｂに下方より係合した状態に保持され、針棒２ が上下動しても位置決めブロック５がガイドブロック１１に接触しないようにな っている。そしてピン１２の一側が窪み１３ｂに嵌合係止して支持軸３の回転止 めが行われ（図４）、フック部１７が図５に示されるような状態に保持されて不 用意に回動し、針等に当たって破損することがないようになっている。This device is configured as described above, and when the normal threading operation is not performed, the support shaft 3 is pulled up by the action of the spring 10 and the stopper 19 is supported, as shown in FIGS. 1 and 3. It is held in a state of being engaged with the support portion 1b in the middle portion of the frame from below, so that the positioning block 5 does not contact the guide block 11 even if the needle bar 2 moves up and down. Then, one side of the pin 12 is fitted and locked in the recess 13b to stop the rotation of the support shaft 3 (FIG. 4), and the hook portion 17 is held in the state as shown in FIG. It moves so that it will not be damaged by hitting a needle or the like.
【００１６】 糸通しを行うときには、針１５が上死点に位置するとき、操作レバー１８をバ ネ１０の作用に抗して押下げる。これにより先ず、ガイドブロック１１が位置決 めブロック５の受け棚６に当たってその動きを止められ（図６）、ついでピン１ ２の他側が受け棚６に当たると共に、ストッパー１９が支承部１ａに当たって支 持軸３の降下が止められ、ピン１２の一側が窪み１３ｂより離脱する（図７）。When performing threading, when the needle 15 is located at the top dead center, the operation lever 18 is pushed down against the action of the panel 10. As a result, first, the guide block 11 hits the receiving rack 6 of the positioning block 5 to stop its movement (FIG. 6), then the other side of the pin 12 hits the receiving rack 6, and the stopper 19 hits the bearing portion 1a to support it. The descent of the shaft 3 is stopped, and one side of the pin 12 separates from the recess 13b (FIG. 7).
【００１７】 操作レバー１８を限度まで押下げ、その押下げが止められた段階で、操作レバ ー１８を図５の時計方向に回動操作すると、ピン１２の一側が水平溝１３ａに、 他側が位置決めブロック５の溝に嵌合して水平に回動し（図２、図８及び図９） 、フック部１７が針１５の目孔１６に挿入される（図１０）。挿入後、操作レバ ー１８を図１０の反時計方向に回動操作すると、フック部１７が糸を引掛けて針 １５の目孔１６より抜け出、図７の状態より操作レバー１８を解放すると、ピン １２の一側が窪み１３ｂ下に位置し、他側が溝７より離脱しているため、コイル バネ１４の作用によりガイドブロック１１が押下げられ、窪み１３ｂにピン１２ の一側を嵌合係止させると共に、バネ１０の作用により支持軸３がガイドブロッ ク１１と共に、ストッパー１９が支承部１ｂに当たるまで上昇し、図３に示す位 置に戻される。When the operating lever 18 is pushed down to the limit and the pushing lever is stopped, the operating lever 18 is turned clockwise in FIG. 5 so that one side of the pin 12 is in the horizontal groove 13a and the other side is It fits into the groove of the positioning block 5 and rotates horizontally (FIGS. 2, 8 and 9), and the hook portion 17 is inserted into the eye hole 16 of the needle 15 (FIG. 10). After the insertion, when the operation lever 18 is rotated counterclockwise in FIG. 10, the hook portion 17 catches the thread and comes out from the eye hole 16 of the needle 15, and when the operation lever 18 is released from the state of FIG. Since one side of the pin 12 is located below the recess 13b and the other side is separated from the groove 7, the guide block 11 is pushed down by the action of the coil spring 14, and the one side of the pin 12 is fitted and locked in the recess 13b. At the same time, the support shaft 3 moves upward together with the guide block 11 by the action of the spring 10 until the stopper 19 abuts on the support portion 1b, and is returned to the position shown in FIG.
【００１８】[0018]
本考案は以上のように構成され、次のような効果を奏する。 請求項１記載の糸通し装置によれば、操作レバーの回動操作によってフック部 で引掛けた糸を針の目孔に確実に通し、糸通しを確実に行えること、糸通しを行 わないときには、ピンが係止部に嵌合係止することにより、支持軸の回動が阻止 され、フック部が回動できないから、フック部が針等に係合して破損することが ないこと、位置決め部材はガイドブロックが係合してその降下を阻止する機能を 有していればよいから、構造が簡単でコンパクトに構成することができ、針棒と 共に高速で上下動して０慣性による影響を少なくできること、案内部の係止部は 、嵌合するピンの回り止めの機能さえ有していればよいから、係止部を短くする ことができ、したがって案内部を備えたガイドブロックもコンパクトにすること ができ、コンパクトが可能な位置決め部材と相俟って設計上の自由度を持つこと ができること等の効果を有する。 The present invention is configured as described above and has the following effects. According to the threading device of the first aspect, the thread hooked by the hook portion can be surely threaded through the eye hole of the needle by the turning operation of the operation lever to ensure the threading, and the threading is not performed. In some cases, the support shaft is prevented from rotating by fitting and locking the pin into the locking portion, and the hook portion cannot rotate, so that the hook portion will not engage with the needle or the like and be damaged. Since the positioning member only needs to have a function to prevent the lowering by engaging the guide block, the structure can be made simple and compact, and it can move up and down at a high speed together with the needle bar, resulting in zero inertia. The influence can be reduced, and the locking part of the guide part only needs to have the function of preventing rotation of the pin to be fitted, so that the locking part can be shortened, and therefore the guide block equipped with the guide part can be shortened. It can be made compact and DOO has an effect such that the can have design flexibility I capable positioning member coupled with.
【００１９】 請求項２記載の糸通し装置においては、ピンの延長する突出端が位置決め部材 の係合面に当たるまで操作レバーを押下げる操作を行うだけで、針の目孔と同一 レベルでのフック部の位置決めを容易に行うことができる。 請求項３記載の糸通し装置のように、糸通し時にピンの延長する突出端を溝に 嵌合させて支持軸の針棒に対する上下動を阻止できるようにしておけば、操作レ バーを押さえておかなくても、単に水平に回動操作するだけで、フック部を針の 目孔に出し入れすることができる。In the threading device according to the second aspect of the present invention, the hook is provided at the same level as the eye hole of the needle only by pushing down the operation lever until the protruding end of the pin that contacts the engaging surface of the positioning member. It is possible to easily position the parts. As in the threading device according to claim 3, if the protruding end of the pin that extends during threading is fitted into the groove so that the vertical movement of the support shaft with respect to the needle bar can be prevented, the operation lever is pressed down. Even if it is not stored, the hook can be put in and out of the eye hole of the needle by simply rotating it horizontally.
【００２０】 請求項４記載の糸通し装置のように、支持軸にストッパーを設ければ、糸通し が針の上死点ないしその付近のみで行われ、フック部がそれ以上降下することが できないから、押え金等に当たって損傷することがない。If a stopper is provided on the support shaft as in the threading device according to the fourth aspect, the threading is performed only at or near the top dead center of the needle, and the hook portion cannot descend further. Therefore, it will not be damaged by hitting the presser foot.
【図１】 ジグザグミシンの針棒機構に設けた本考案に
係る糸通し装置を示すもので、糸通しを行わないときの
状態を示す斜視図。FIG. 1 is a perspective view showing a threading device according to the present invention provided in a needle bar mechanism of a zigzag sewing machine, showing a state when threading is not performed.
【図２】 糸通しを行うときの同装置の斜視図。FIG. 2 is a perspective view of the device when threading.
【図３】 糸通しを行わないときの同装置の正面図。FIG. 3 is a front view of the same device when threading is not performed.
【図４】 図３のＡ−Ａ線断面図。FIG. 4 is a sectional view taken along line AA of FIG.
【図５】 図３のＢ−Ｂ線断面図。5 is a sectional view taken along line BB of FIG.
【図６】 糸通し時、ガイドブロックが位置決めブロッ
クに当たってその動きが止められたときの状態を示す糸
通し装置の正面図。FIG. 6 is a front view of the threading device showing a state when the guide block hits the positioning block and its movement is stopped during threading.
【図７】 ピンが係止部より離脱し、フック部が針の目
孔のレベルに位置決めされたときの状態を示す同装置の
正面図。FIG. 7 is a front view of the device showing a state in which the pin is disengaged from the locking portion and the hook portion is positioned at the level of the eye hole of the needle.
【図８】 フック部が針の目孔に挿通されたときの状態
を示す同装置の正面図。FIG. 8 is a front view of the device showing a state in which the hook portion is inserted into the eye hole of the needle.
【図９】 図８のＣ−Ｃ線断面図。9 is a sectional view taken along line CC of FIG.
【図１０】図８のＤ−Ｄ線断面図。10 is a sectional view taken along line DD of FIG.
１・・・支持枠 ２・・・針棒 ３・・・支持軸 ５・・・位置
決めブロック ６・・・受け棚 ７・・・溝 ９・・・縦溝 １０・・・バ
ネ １１・・・ガイドブロック １２・・・ピ
ン １３ａ・・・水平溝 １３ｂ・・・
窪み １４・・・コイルバネ １５・・・針 １７・・・フック部 １８・・・操
作レバー １９・・・ストッパー1 ... Support frame 2 ... Needle bar 3 ... Support shaft 5 ... Positioning block 6 ... Receiving shelf 7 ... Groove 9 ... Vertical groove 10 ... Spring 11 ... Guide block 12 ... Pin 13a ... Horizontal groove 13b ...
Cavity 14 ... Coil spring 15 ... Needle 17 ... Hook part 18 ... Operating lever 19 ... Stopper
Claims (4)
支され、上部にピンを側方に突出して設けた支持軸と、
支持軸を常には上方に引上げるように付勢する第１のバ
ネと、支持軸に装着され、ガイド手段により案内されて
支持軸に沿い上下動するガイドブロックと、ガイドブロ
ックに形成され、支持軸を中心とする上記ピンの水平方
向の回動を案内する水平部及び水平部端より上向きに形
成され、上記ピンが嵌合係止する係止部とよりなる案内
部と、支持軸に装着され、下端がガイドブロックに、上
端が上記ピンにそれぞれ係合し、上記案内部をピンに押
付ける第２のバネと、針棒に固着され、ガイドブロック
の位置決めを行う位置決め部材と、支持軸に設けられる
操作レバーと、支持軸下端に支持され、針の目孔に挿通
可能なフック部とよりなるミシンの糸通し装置。1. A support shaft axially supported so as to be vertically movable and rotatable in parallel with a needle bar, and provided with a pin projecting laterally at an upper portion thereof,
A first spring for urging the support shaft so as to always pull it upward, a guide block mounted on the support shaft and vertically moved along the support shaft by being guided by guide means, and formed on the guide block. Attached to a support shaft, and a guide portion formed of a horizontal portion that guides the horizontal rotation of the pin about the shaft and upward of the end of the horizontal portion, and a locking portion that engages and locks the pin. A second spring that engages the guide block at the lower end and the pin at the upper end, and presses the guide portion against the pin; a positioning member that is fixed to the needle bar and positions the guide block; A threading device for a sewing machine, which comprises an operating lever provided on the base and a hook portion that is supported by the lower end of the support shaft and that can be inserted into the eye hole of the needle.
る突出端で位置決め部材に係合しうるようになってお
り、また位置決め部材にはピンが係合して水平に回動し
うるような平坦な係合面が形成される請求項１記載のミ
シンの糸通し装置。2. A pin is extended to project to the opposite side, and an extending projecting end can be engaged with a positioning member, and the positioning member is engaged with the pin and can be horizontally rotated. 2. The threading device for a sewing machine according to claim 1, wherein such a flat engagement surface is formed.
を存する突出部を形成して係合面との間にピンの延長す
る突出端が嵌合しうる溝を設けてなる請求項２記載のミ
シンの糸通し装置。3. A groove is provided on one side of the engaging surface so that a protruding portion having a constant distance from the engaging surface is formed and a protruding end of a pin can be fitted between the engaging surface and the engaging surface. The threading device for a sewing machine according to claim 2, wherein
の付近で行うためのストッパーが設けられる請求項１記
載のミシンの糸通し装置。4. The threading device for a sewing machine according to claim 1, wherein the support shaft is provided with a stopper for threading the needle at or near the top dead center of the needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993001175U JP2586732Y2 (en) | 1993-01-21 | 1993-01-21 | Sewing machine threading device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1993001175U JP2586732Y2 (en) | 1993-01-21 | 1993-01-21 | Sewing machine threading device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0655585U true JPH0655585U (en) | 1994-08-02 |
| JP2586732Y2 JP2586732Y2 (en) | 1998-12-09 |
Family
ID=11494106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1993001175U Expired - Fee Related JP2586732Y2 (en) | 1993-01-21 | 1993-01-21 | Sewing machine threading device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2586732Y2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002113281A (en) * | 2000-08-03 | 2002-04-16 | Janome Sewing Mach Co Ltd | Sewing machine having thread passing device |
| CN102560922A (en) * | 2012-02-29 | 2012-07-11 | 苏州井村服饰有限公司 | Needle threader and method of using same |
| JP2016187508A (en) * | 2015-03-30 | 2016-11-04 | 蛇の目ミシン工業株式会社 | Needle threading device for sewing machine |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5115689B2 (en) * | 2006-11-10 | 2013-01-09 | アイシン精機株式会社 | Sewing machine threading device |
| JP5050493B2 (en) * | 2006-11-10 | 2012-10-17 | アイシン精機株式会社 | Sewing machine threading device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0489095A (en) * | 1990-07-30 | 1992-03-23 | Brother Ind Ltd | Threading device of sewing machine |
| JPH04224791A (en) * | 1990-12-26 | 1992-08-14 | Brother Ind Ltd | Threading device of sewing machine with display means |
| JPH057684A (en) * | 1991-07-02 | 1993-01-19 | Brother Ind Ltd | Threader for sewing machine |
-
1993
- 1993-01-21 JP JP1993001175U patent/JP2586732Y2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0489095A (en) * | 1990-07-30 | 1992-03-23 | Brother Ind Ltd | Threading device of sewing machine |
| JPH04224791A (en) * | 1990-12-26 | 1992-08-14 | Brother Ind Ltd | Threading device of sewing machine with display means |
| JPH057684A (en) * | 1991-07-02 | 1993-01-19 | Brother Ind Ltd | Threader for sewing machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002113281A (en) * | 2000-08-03 | 2002-04-16 | Janome Sewing Mach Co Ltd | Sewing machine having thread passing device |
| CN102560922A (en) * | 2012-02-29 | 2012-07-11 | 苏州井村服饰有限公司 | Needle threader and method of using same |
| JP2016187508A (en) * | 2015-03-30 | 2016-11-04 | 蛇の目ミシン工業株式会社 | Needle threading device for sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2586732Y2 (en) | 1998-12-09 |
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