JP2001218992A - Threading device for sewing machine - Google Patents
Threading device for sewing machineInfo
- Publication number
- JP2001218992A JP2001218992A JP2000031896A JP2000031896A JP2001218992A JP 2001218992 A JP2001218992 A JP 2001218992A JP 2000031896 A JP2000031896 A JP 2000031896A JP 2000031896 A JP2000031896 A JP 2000031896A JP 2001218992 A JP2001218992 A JP 2001218992A
- Authority
- JP
- Japan
- Prior art keywords
- thread
- threading
- hook
- catching
- 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.)
- Pending
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、ミシン針の針穴
へ糸を通すミシンの糸通し装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threading device for a sewing machine that passes a thread through a needle hole of a sewing needle.
【０００２】[0002]
【従来の技術】従来、ミシン針の針穴に上糸を通す糸通
し装置が知られており、たとえば特許公報第２９１７３
２０号に記載されているものが挙げられる。この公報に
記載された糸通し装置は、ミシン針の針穴を通り抜ける
ことができる微細なフックにより、定められた長さに切
断された上糸を引き上げることで、糸通しを行うもので
ある。2. Description of the Related Art Conventionally, a threading device for passing an upper thread through a needle hole of a sewing machine needle is known.
No. 20. The threading device described in this publication performs threading by pulling up an upper thread cut to a predetermined length by a fine hook that can pass through a needle hole of a sewing needle.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記公
報の糸通し装置では、公報の第４頁右欄第３７行〜第４
０行に記載されているように、「その上昇過程におい
て、上糸Ｔの目孔９９における摩擦力や上糸Ｔの自重等
により、フック３７が上糸Ｔを保持しきれなくなり、鈎
部３５から外れる」ため、糸端を完全に引き抜いていな
い状態で糸がフリーになってしまい、糸が外れて糸通し
をやり直したり、あるいはピンセットのような道具を用
いて糸端を針穴から出すといった作業を要したりといっ
たことから、面倒であった。However, in the threading device disclosed in the above publication, the right column of page 4, line 37 to the fourth publication of the publication are disclosed.
As described in line 0, "in the ascending process, the hook 37 can no longer hold the upper thread T due to the frictional force of the upper thread T in the eye hole 99 or the weight of the upper thread T, and the hook 35 The thread ends free, and the thread becomes free when the thread end is not completely pulled out.The thread comes off and the threading is started again, or the thread end is pulled out of the needle hole using a tool such as tweezers. It was troublesome because it required work.
【０００４】本発明の課題は、ミシン針の針穴に上糸を
通すミシンの糸通し装置において、糸端が針穴から確実
に引き抜かれ糸通し作業をより簡単にすることにある。An object of the present invention is to provide a threading device for a sewing machine in which a needle thread is passed through a needle hole of a sewing machine needle, whereby a thread end is reliably pulled out from the needle hole to make the threading operation easier.
【０００５】[0005]
【課題を解決するための手段】以上の課題を解決するた
め、請求項１に記載の発明は、たとえば図１、図２に示
すように、糸巻きからの糸（Ｔ）を把持し、把持した糸
がミシン針（２，３）の針穴（２ａ、３ａ）に近接して
張り出されるように移動した後、糸を離して元の位置に
復帰する糸案内手段（１０）と、糸案内手段により針穴
に近接して張り出された糸を捉えて、この糸をループ状
に針穴に引き込むように移動する糸通しフック（２５）
とを備えるミシン（ロックミシン１）の糸通し装置
（４）において、針穴に引き込まれた状態の糸が糸通し
フックから外れた場合に、その糸を糸通しフックから離
間した位置で捕捉する糸捕捉部（糸捕捉フック２６ａ、
フック３１）を有し、糸捕捉部に捕捉された糸の端が針
穴を通り抜けるような位置まで移動する捕捉移動手段
（弾性部材２６、捕捉移動手段３０）を備えることを特
徴とする。Means for Solving the Problems To solve the above problems, the invention according to claim 1 grasps and grasps a thread (T) from a bobbin as shown in FIGS. 1 and 2, for example. A thread guide means (10) for moving the thread so as to protrude close to the needle holes (2a, 3a) of the sewing needles (2, 3), and then releasing the thread to return to the original position; A threading hook (25) that catches the thread that has protruded in the vicinity of the needle hole by means and moves the thread into the needle hole in a loop shape.
In the threading device (4) of the sewing machine (the lock sewing machine 1) having the following, when the thread pulled into the needle hole comes off the threading hook, the thread is captured at a position separated from the threading hook. Thread catching section (yarn catch hook 26a,
It has a hook 31), and is provided with catching and moving means (elastic member 26, catching and moving means 30) that moves to a position where the end of the yarn captured by the yarn capturing portion passes through the needle hole.
【０００６】請求項１に記載の発明によれば、糸案内手
段によって糸巻きからの糸がミシン針の針穴近くで張り
出され、その糸は糸通しフックにより針穴にループ状に
引き込まれる。さらに、その糸が糸通しフックから外れ
た場合には、捕捉移動手段の糸捕捉部によって捕捉さ
れ、捕捉移動手段の移動により糸端が針穴を通り抜ける
ことから、従来の糸通し装置のように途中で糸端がフリ
ーになってしまうことはなく、糸端を確実に針穴から引
き抜くことができる。According to the first aspect of the present invention, the thread from the bobbin is protruded near the needle hole of the sewing machine needle by the thread guiding means, and the thread is drawn into the needle hole in a loop by the threading hook. Further, when the thread comes off from the threading hook, the thread is caught by the thread catching portion of the catching and moving means, and the thread end passes through the needle hole by the movement of the catching and moving means. The yarn end does not become free on the way, and the yarn end can be reliably pulled out from the needle hole.
【０００７】請求項２に記載の発明は、請求項１に記載
のミシンの糸通し装置において、捕捉移動手段は、糸通
しフックをミシン針に対して接近および離間するように
駆動する糸通しフック駆動手段（２０）に対して、糸捕
捉部が糸通しフックの下方に位置するように、取り付け
られていることを特徴とする。According to a second aspect of the present invention, in the threading device for a sewing machine according to the first aspect, the catching and moving means drives the threading hook to move toward and away from the sewing needle. The drive means (20) is characterized in that the thread catching portion is attached so as to be located below the threading hook.
【０００８】請求項２に記載の発明によれば、捕捉移動
手段は、糸捕捉部が糸通しフックの下方に位置するよう
に、糸通しフック駆動手段に取り付けられていることか
ら、糸通しフックとともに移動しながら、糸通しフック
が捉えた糸が糸通しから外れた場合、確実に捕捉するこ
とができる。ここで、糸通しフック駆動手段の具体的構
成は特に限定されないが、たとえば、回転軸を有し該軸
を介して糸通しフックを駆動する構成であってもよい
し、アクチュエータを利用し糸通しフックを駆動する構
成であってもよい。According to the second aspect of the present invention, the catching and moving means is attached to the threading hook driving means such that the thread catching portion is located below the threading hook. If the thread caught by the threading hook is removed from the threading while moving with the threading hook, the thread can be reliably captured. Here, the specific configuration of the threading hook driving means is not particularly limited. For example, the threading hook driving means may be configured to have a rotating shaft to drive the threading hook via the shaft, or to use an actuator to perform threading. The structure which drives a hook may be sufficient.
【０００９】請求項３に記載の発明は、請求項１または
２に記載のミシンの糸通し装置において、捕捉移動手段
は、糸捕捉部が他の部材に接すると後退するように、少
なくとも一部が弾性部材（弾性部材２６、バネ３４）か
らなることを特徴とする。According to a third aspect of the present invention, in the threading device for a sewing machine according to the first or second aspect, the catching and moving means is at least partially retracted when the thread catching portion comes into contact with another member. Is made of an elastic member (elastic member 26, spring 34).
【００１０】糸捕捉部が糸通しフックの近くに設けられ
ている場合、特に請求項２のように糸通しフック駆動手
段に取り付けられていると、糸通しフックにより糸を針
穴に引き込む作業の際に、糸捕捉部がミシン針などの他
の部材に接する可能性がある。しかし、請求項３の捕捉
移動手段であれば、糸捕捉部が他の部材に接すると後退
するように少なくとも一部が弾性部材からなることか
ら、ミシン針などに当接した場合糸捕捉部が逃げるよう
に後退するので、糸を引き込む作業に悪影響を及ぼすこ
とはない。ここで、「少なくとも一部が弾性部材からな
る」とは、たとえば捕捉移動手段全体が可撓性を有する
金属や樹脂から形成されていてもよいし、糸捕捉部とは
別にバネやゴムなどの弾性部材が設けられていてもよ
い。In the case where the thread catching portion is provided near the threading hook, particularly when the thread catching portion is attached to the threading hook driving means, the threading hook pulls the thread into the needle hole. At this time, the thread catching section may come into contact with another member such as a sewing needle. However, in the case of the catching and moving means of claim 3, since at least a part of the thread catching portion is made of an elastic member so as to retreat when the thread catching portion comes into contact with another member, when the thread catching portion comes into contact with a sewing machine needle or the like, the thread catching portion is Since it retreats so as to escape, it does not adversely affect the operation of drawing the thread. Here, "at least a part of the elastic member" means, for example, that the entire catching and moving means may be formed of a flexible metal or resin, or may be a spring or rubber separately from the yarn catching portion. An elastic member may be provided.
【００１１】請求項４に記載の発明は、請求項１〜３の
いずれかに記載のミシンの糸通し装置において、所定の
位置に糸切断部材（カッター１２）が設けられているこ
とを特徴とする。According to a fourth aspect of the present invention, in the threading device for a sewing machine according to any one of the first to third aspects, a thread cutting member (cutter 12) is provided at a predetermined position. I do.
【００１２】請求項４に記載の発明によれば、所定の位
置に設けられている糸切断部材によって、糸巻きからの
糸を決まった位置で切断できるので、常に糸端までの長
さが一定になる。よって、糸を捕捉後の捕捉移動手段の
移動先の位置と糸切断部材の位置を調節することで、糸
端が必ず針穴を通り抜けるように容易に構成することが
できる。According to the fourth aspect of the present invention, the yarn from the yarn winding can be cut at a predetermined position by the yarn cutting member provided at a predetermined position, so that the length to the yarn end is always constant. Become. Therefore, by adjusting the position of the movement destination of the catching movement unit after catching the yarn and the position of the yarn cutting member, it is possible to easily configure the yarn end to always pass through the needle hole.
【００１３】請求項４に記載のミシンの糸通し装置にお
いて、請求項５に記載の発明のように、糸切断部材は、
ミシンアーム下部に固定された空環カッターであっても
よい。請求項５に記載の発明のように、従来も設けられ
ていた空環カッターを糸通しのための糸切断部材として
も兼用すれば、部品点数を増やすことなく糸切断部材を
設けることができる。According to a fourth aspect of the present invention, in the threading device for a sewing machine according to the fifth aspect, the thread cutting member comprises:
An empty ring cutter fixed to the lower part of the sewing machine arm may be used. As in the fifth aspect of the present invention, if the conventionally provided hollow ring cutter is also used as a thread cutting member for threading, the thread cutting member can be provided without increasing the number of parts.
【００１４】[0014]
【発明の実施の形態】以下、図面に基づいて本発明の実
施の形態を詳細に説明する。図１の糸通し装置４は、オ
ーバーロックミシン１のミシンアーム１ａに設けられ、
２本のミシン針２，３の針穴２ａ、３ａに上糸を通すた
め装置である。糸通し装置４は、主に、操作レバー１
１、カッター１２、糸案内手段１０、針棒糸案内１４、
および図２に示す糸通しフック駆動手段２０からなる。
糸通しフック駆動手段２０は、通常は糸案内手段１０の
後方のミシンアーム１ａ内にあり外側からは見えない。Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is provided on a sewing machine arm 1a of the overlock sewing machine 1.
This is a device for passing the upper thread through the needle holes 2a, 3a of the two sewing needles 2, 3. The threading device 4 mainly includes the operation lever 1
1, cutter 12, thread guide means 10, needle bar thread guide 14,
And a threading hook driving means 20 shown in FIG.
The threading hook driving means 20 is usually in the sewing machine arm 1a behind the thread guiding means 10 and cannot be seen from the outside.
【００１５】操作レバー１１は、上糸に糸Ｔを通す際に
操作するレバーである。カッター１２は、刃１２ａが取
り付けられ、縁かがり縫等の環縫い縫製時に空環を切断
する空環カッターである。またカッター１２は、糸通し
時に上糸を切断する糸切断部材でもあり、図１に示すミ
シンアーム１ａの側面下部の所定の位置に設けられてい
る。この「所定の位置」は、後述する糸通し動作の際に
糸捕捉フック２６ａによって引き上げられる糸Ｔの糸端
が、確実に針穴２ａ、３ａを通り抜けられるような長さ
になるように配慮して、決められている。なお、従来の
空環カッターは、図１のＡ位置に設けられていたが、糸
通し時を考慮し本発明においてはＢ位置に設けられてい
る。針棒糸案内１４は、針固定部１６の上部にネジ止め
された螺旋状のワイヤーからなる。The operation lever 11 is a lever operated when the thread T is passed through the upper thread. The cutter 12 is an empty ring cutter to which a blade 12a is attached and which cuts an empty ring at the time of chain stitch sewing such as overcast sewing. The cutter 12 is also a thread cutting member that cuts the upper thread during threading, and is provided at a predetermined position on the lower side surface of the sewing machine arm 1a shown in FIG. This "predetermined position" is designed so that the thread end of the thread T pulled up by the thread catching hook 26a at the time of the threading operation to be described later has a length such that it can surely pass through the needle holes 2a, 3a. Is decided. Although the conventional hollow ring cutter is provided at the position A in FIG. 1, it is provided at the position B in the present invention in consideration of threading. The needle bar thread guide 14 is formed of a spiral wire screwed on the upper part of the needle fixing part 16.
【００１６】糸案内手段１０は、プリテンション部１３
とワイパー１５からなる。プリテンション部１３は、糸
通し時に、取付基板１３ａとプリテンション皿１３ｂと
の間で糸を挟むものである。取付基板１３ａの右側部が
延出するように形成され、その端部に下端部が二股に分
かれたワイパー１５が固定されている。ワイパー１５の
二股部分は、糸を案内するための案内溝１５ａとなって
いる。The yarn guiding means 10 includes a pretension portion 13
And the wiper 15. The pretension portion 13 is for holding a thread between the mounting board 13a and the pretension plate 13b during threading. A right side portion of the mounting board 13a is formed to extend, and a wiper 15 having a lower end portion forked at a lower end portion is fixed to an end portion thereof. The forked portion of the wiper 15 serves as a guide groove 15a for guiding the yarn.
【００１７】図２に示す糸通しフック駆動手段２０は、
糸通し軸２１、該糸通し軸２１に固着されたホルダー２
１ａ、フック駆動板２２、フックカバー２３，２４等か
らなる。図３に示すように、フックカバー２３，２４の
間には、先端が下向きの鈎型に形成された糸通しフック
２５が突出するように設けられている。この糸通しフッ
ク２５は、針穴２ａ、３ａを通り抜けできる大きさであ
る。糸通しフック駆動手段２０はこの糸通しフック２５
をミシン針２，３に接近および離間するように駆動する
ものである。The threading hook driving means 20 shown in FIG.
Threading shaft 21, holder 2 fixed to threading shaft 21
1a, a hook driving plate 22, hook covers 23 and 24, and the like. As shown in FIG. 3, between the hook covers 23 and 24, a threading hook 25 having a hook-like shape with a downward end is provided so as to protrude. The threading hook 25 is large enough to pass through the needle holes 2a, 3a. The threading hook driving means 20 includes the threading hook 25
Is driven to approach and separate from the sewing needles 2 and 3.
【００１８】また、フック駆動板２２の背面側には、細
長い部材からなり、全体として撓み可能に弾性を有する
弾性部材２６が取り付けられている。弾性部材２６は、
ネジ２７、座金２８、およびナット２９によりフック駆
動板２２に固定されている。また、弾性部材２６の先端
部は、フックカバー２３，２４の間に臨むように、上方
に向かって針状に形成され、糸通しフック２５からはず
れた糸を捕捉する糸捕捉フック（糸捕捉部）２６ａとな
っている。すなわち、弾性部材２６が本発明の捕捉移動
手段となる。また、図４（ａ）に示すように、糸捕捉フ
ック２６ａは、糸通しフック２５の真下であって、か
つ、その先端が糸通しフック２５の先端近くでわずかに
前に位置するように設けられている。On the back side of the hook driving plate 22, an elastic member 26, which is formed of an elongated member and has elasticity so as to be able to bend as a whole, is attached. The elastic member 26 is
It is fixed to the hook driving plate 22 by screws 27, washers 28 and nuts 29. Further, the tip of the elastic member 26 is formed in a needle shape upward so as to face between the hook covers 23 and 24, and a thread catching hook (a thread catching portion) for catching the thread coming off the threading hook 25. ) 26a. That is, the elastic member 26 becomes the capturing and moving means of the present invention. As shown in FIG. 4A, the thread catching hook 26a is provided immediately below the threading hook 25 and its tip is located near the tip of the threading hook 25 and slightly forward. Have been.
【００１９】糸案内手段１０およびフック駆動手段２０
は、いずれも操作レバー１１の動作にともなって所定の
動作をするように構成されている。すなわち、操作レバ
ー１１が下方に押し下げられることに連動して、プリテ
ンション部１３とワイパー１５は右斜め下に向かって、
ワイパー１５がミシン針２，３の前方を通り過ぎるまで
移動する。ほぼ同時に糸通し軸２１が下降しながらフッ
ク駆動板２２の先端が前方に向かう方向に回動し、糸通
しフック２５がミシン針２またはミシン針３の針穴を通
る。次に、操作レバー１１を離すと、操作レバー１１が
上昇しながら元の位置に戻るとともに、プリテンション
部１３とワイパー１５は左斜め上方に移動し、糸通し軸
２１は逆方向に回転しながら上昇していき、元の状態に
なる。プリテンション部１３の取付基板１３ａとプリテ
ンション皿１３ｂとの間は通常は閉じているが、上昇す
る時、糸通しフック２５が糸を確実に捕捉した後に開放
するようになっている。なお、このような糸通し装置１
０の動作機構は、既に周知の技術であることから、詳細
は省略する。Thread guide means 10 and hook drive means 20
Are configured to perform a predetermined operation in accordance with the operation of the operation lever 11. That is, in conjunction with the operation lever 11 being pressed down, the pretension portion 13 and the wiper 15 move obliquely downward to the right.
The wiper 15 moves until it passes in front of the sewing needles 2 and 3. Almost simultaneously, the tip of the hook drive plate 22 rotates in the forward direction while the threading shaft 21 descends, and the threading hook 25 passes through the needle hole of the sewing needle 2 or the sewing needle 3. Next, when the operating lever 11 is released, the operating lever 11 returns to the original position while ascending, the pretension portion 13 and the wiper 15 move diagonally upward and to the left, and the threading shaft 21 rotates in the opposite direction. Ascends and returns to its original condition. The space between the mounting substrate 13a of the pretension portion 13 and the pretension plate 13b is normally closed, but when ascending, the threading hook 25 is opened after reliably catching the yarn. In addition, such a threading device 1
Since the operation mechanism of 0 is a well-known technique, its details are omitted.
【００２０】糸通し装置１０には、図示しないミシン針
切換レバーが設けられ、このレバーを操作することによ
り、ミシン針２，３のいずれに糸通しするかを選択でき
るようになっている。The threading device 10 is provided with a sewing needle switching lever (not shown). By operating this lever, it is possible to select which of the sewing needles 2 and 3 the threading is performed.
【００２１】上記構成の糸通し装置１０における糸通し
作業時の動作を説明する。糸通し装置１０では、上糸を
たとえばミシン針２に通す場合、まず、ミシンアーム１
ａ上部の図示しない糸巻きから誘導した糸Ｔを針棒糸案
内１４に通し、次いで、ワイパー１５の案内溝１５ａに
掛け、プリテンション部１３の取付基板１３ａとプリテ
ンション皿１３ｂとの間に通し、操作レバー１１の外側
を回して、カッター１２に糸を掛けるとその位置で糸が
切れる。このとき、糸通しフック２５と糸捕捉フック２
６ａは図４（ａ）の状態である。The operation during the threading operation of the threading device 10 having the above configuration will be described. In the threading device 10, when the upper thread is passed through, for example, the sewing machine needle 2, first, the sewing machine arm 1
a, a thread T guided from a thread spool (not shown) in the upper part is passed through the needle bar thread guide 14, then, is hooked on the guide groove 15a of the wiper 15, and is passed between the mounting board 13a of the pretension portion 13 and the pretension plate 13b. When the thread is hooked on the cutter 12 by turning the outside of the operation lever 11, the thread is cut at that position. At this time, the threading hook 25 and the thread catching hook 2
6a is the state of FIG.
【００２２】この状態で、操作レバー１１を下方（図１
の矢印Ｃ方向）に引くと、前述のように、プリテンショ
ン部１３が図１における右斜め下に向かって移動する。
糸Ｔもワイパー１５に誘導されるように共に移動する。
ワイパー１５がミシン針２，３の前を通り過ぎたところ
で停止すると、糸Ｔは、プリテンション部１３の取付基
板１３ａとプリテンション皿１３ｂとの間が閉じられる
ことで十分な力で挟まれ所定の張力をもってミシン針２
の針穴の直前に張り出されたような状態になる。In this state, the operation lever 11 is moved downward (FIG. 1).
(In the direction of arrow C), as described above, the pretension portion 13 moves obliquely downward and to the right in FIG.
The yarn T also moves together so as to be guided by the wiper 15.
When the wiper 15 stops after passing in front of the sewing needles 2 and 3, the thread T is caught by a sufficient force by closing the space between the mounting board 13a of the pretension portion 13 and the pretension plate 13b, and a predetermined amount of time. Sewing needle 2 with tension
It becomes a state that it protruded just before the needle hole of.
【００２３】上記のプリテンション部１３とワイパー１
５の動作とほぼ同時に、糸通し軸２１は下降しながら回
転し、糸通しフック２５がミシン針２の針穴２ａに近づ
いていく。糸Ｔが針穴２ａ前に張り出された状態になっ
たときに、糸通し軸２１のさらなる回転により、糸通し
フック２５が針穴２ａを通り抜け、その鈎型の先端によ
り糸Ｔを引っかけループ状に針穴２ａに引き込んでい
く。このとき、糸捕捉フック２６ａの先端はミシン針２
の下端部に当接するが、可撓性を有することから、図４
（ｂ）に示すように後方に撓みミシン針２に影響を与え
るようなことはない。The above-mentioned pretension portion 13 and wiper 1
Almost at the same time as the operation 5, the threading shaft 21 rotates while descending, and the threading hook 25 approaches the needle hole 2 a of the sewing needle 2. When the thread T is in a state of being protruded in front of the needle hole 2a, further rotation of the threading shaft 21 causes the threading hook 25 to pass through the needle hole 2a. It is drawn into the needle hole 2a in the same manner. At this time, the tip of the thread catching hook 26a is
Abuts on the lower end of FIG.
As shown in (b), there is no possibility of bending the sewing machine 2 backward and affecting the sewing machine needle 2.
【００２４】この状態で操作レバー１１の手を離すと、
操作レバー１１は戻るように上昇していく。糸通し軸２
１は逆方向に回転しながら上昇していき、この動きにと
もなって、図４（ｃ）に示すように、糸通しフック２５
は糸Ｔを引き上げていく。このとき、糸捕捉フック２６
ａもミシン針２から離れていくので元の形状に戻る。ま
た、ほぼ同時に、取付基板１３ａとプリテンション皿１
３ｂ間は開放され、プリテンション部１３とワイパー１
５は、糸Ｔを離して左斜め上に移動し元の位置に戻る。
糸通しフック２５が上昇していく過程で、糸Ｔは自重等
により糸通しフック２５から外れてしまうが、糸通しフ
ック２５の斜め下に位置する糸捕捉フック２６ａに掛か
り捕捉される。さらに糸通し軸２１が回転しながら上昇
し元の待機位置に戻り、糸捕捉フック２６ａも元の位置
に戻ると、所定の長さに切断されている糸Ｔの糸端は針
穴２ａを通り抜ける（図４（ｄ））。なお、糸捕捉フッ
ク２６ａは糸Ｔを引っ掛けているだけで固定してはいな
いので、糸捕捉フック２６ａから外す作業等なしに縫製
を開始できる。When the operation lever 11 is released in this state,
The operation lever 11 moves upward to return. Threading shaft 2
1 rises while rotating in the opposite direction, and with this movement, as shown in FIG.
Pulls up the thread T. At this time, the yarn catching hook 26
Since a also moves away from the sewing needle 2, it returns to its original shape. At substantially the same time, the mounting substrate 13a and the pretensioner 1
3b is opened, and the pretension portion 13 and the wiper 1 are opened.
No. 5 moves the slanted upper left by releasing the thread T and returns to the original position.
In the process of ascending the threading hook 25, the thread T comes off the threading hook 25 due to its own weight or the like, but is caught by the thread catching hook 26a located diagonally below the threading hook 25. Further, when the threading shaft 21 rotates and rises to return to the original standby position, and the thread catching hook 26a also returns to the original position, the thread end of the thread T cut to a predetermined length passes through the needle hole 2a. (FIG. 4D). Since the thread catching hook 26a only hooks the thread T and is not fixed, sewing can be started without removing the thread T from the thread catching hook 26a.
【００２５】以上の糸通し装置１０によれば、糸Ｔを針
穴から引き抜くとき糸通しフック２５から外れた糸は、
糸捕捉フック２６ａにより捕捉され、糸捕捉フック２６
ａが元の位置に戻る動作に伴って糸端が針穴から通り抜
けることから、糸端が引き抜き途中でフリーになってし
まうようなことはなく、確実に針穴から引き抜くことが
できる。したがって、糸通し作業が簡単で確実にでき
る。また、糸捕捉フック２６ａを有する弾性部材２６
は、糸通しフック駆動手段２０を構成するフック駆動板
２２に取り付けられ、しかも、糸捕捉フック２６ａは糸
通しフック２５の下であって、かつ、前方に位置するこ
とから、糸通しフック２５とともに移動しながら糸通し
フック２５から外れた糸Ｔを確実に捕捉できる。さら
に、糸捕捉フック２６ａは、糸通しフック２５の真下で
あって、かつ、その先端が糸通しフック２５の先端近く
でわずかに前に位置するように設けられていることか
ら、糸通しフック２５が糸を引き抜くとき、ミシン針２
に当接してしまうが、弾性部材２６の一部であることか
ら、糸捕捉フック２６ａは撓みながら後退しミシン針２
に影響を与えるようなことはない。According to the threading device 10 described above, when the thread T is pulled out from the needle hole, the thread that has come off from the threading hook 25 is
The yarn capturing hook 26a is captured by the yarn capturing hook 26a.
Since the thread end passes through the needle hole in accordance with the operation of “a” returning to the original position, the thread end does not become free during the drawing, and the thread end can be reliably pulled out from the needle hole. Therefore, the threading operation can be performed simply and reliably. Further, the elastic member 26 having the yarn catching hook 26a
Is attached to a hook driving plate 22 constituting the threading hook driving means 20, and the thread catching hook 26a is located below and forward of the threading hook 25. The thread T detached from the threading hook 25 while moving can be reliably captured. Further, since the thread catching hook 26a is provided immediately below the threading hook 25 and its tip is located near the tip of the threading hook 25 and slightly in front thereof, the threading hook 25a is provided. When the thread is pulled out, sewing needle 2
However, since it is a part of the elastic member 26, the thread catching hook 26a retreats while bending, and
It does not affect
【００２６】また、ミシンアーム１ａ側部下面の所定の
位置に設けられたカッター１２によって糸巻きから引き
出された糸Ｔを決まった位置で切断することができるの
で、糸捕捉フック２６ａが待機位置に戻れば必ず糸端が
針穴から引き抜かれる。さらに、カッター１２は、従来
の空環カッターも兼ねていることから、部品点数が増え
ることはない。Further, the thread T drawn from the thread winding can be cut at a predetermined position by the cutter 12 provided at a predetermined position on the lower surface of the side of the sewing machine arm 1a, so that the thread catching hook 26a can return to the standby position. If the thread end is always pulled out from the needle hole. Further, since the cutter 12 also serves as a conventional hollow ring cutter, the number of parts does not increase.
【００２７】なお、本発明は上記実施の形態に限定され
るものではなく、適宜変更可能であることは勿論であ
る。たとえば、捕捉移動手段は、図５に示すような構成
でもよい。図５には、捕捉移動手段３０を示す。捕捉移
動手段３０は、フック３１、バネ３４、抜け止めネジ３
２、支持部材３３からなる。糸捕捉部であるフック３１
は、コの字状に形成されている。支持部材３３は、フッ
ク３１を支持するもので、たとえば、前記フック駆動板
２２に取り付けられることによって固定され、フック３
１の頭部３１ａがはめ込まれる嵌合穴３３ａを有する。It should be noted that the present invention is not limited to the above-described embodiment, but can be changed as appropriate. For example, the capturing and moving means may have a configuration as shown in FIG. FIG. 5 shows the capturing and moving means 30. The catching and moving means 30 includes a hook 31, a spring 34, a retaining screw 3
2. It consists of a support member 33. Hook 31 which is a thread catching part
Is formed in a U-shape. The support member 33 supports the hook 31 and is fixed, for example, by being attached to the hook drive plate 22.
It has a fitting hole 33a into which one head 31a is fitted.
【００２８】図５の移動捕捉手段３０を上記実施の形態
に適用した場合、前記糸捕捉フック２６ａ同様に、フッ
ク３１は糸通しフック２５の下であって、かつ前に来る
ように位置させる。フック３１は、ミシン針にその先端
が当接したならば、バネ３４の弾性力に抗して、頭部３
１ａが嵌合穴３３ａに沿うように後退し、ミシン針から
離れればバネ３４の付勢力により前方に戻り、糸通しフ
ックから外れた糸を捕捉できる。When the movement catching means 30 shown in FIG. 5 is applied to the above-described embodiment, the hook 31 is positioned below the threading hook 25 and in front thereof, similarly to the thread catching hook 26a. When the tip of the hook 31 comes into contact with the sewing machine needle, the hook 31 resists the elastic force of the spring 34 and the head 3
1a is retracted along the fitting hole 33a, and when it is separated from the sewing machine needle, it returns forward by the urging force of the spring 34, and can catch the thread detached from the threading hook.
【００２９】さらに、上記実施の形態では、操作レバー
の動作に伴って回動する糸通し軸により糸通しフックを
駆動したが、他の機構でもよく、たとえばアクチュエー
タを含むような構成としてもよい。また、本実施例にお
いてはオーバーロックミシンにより説明したが、本発明
の糸通し装置は、他の本縫いミシン、模様縫いミシン等
に適用してもよい。Further, in the above-described embodiment, the threading hook is driven by the threading shaft which rotates in accordance with the operation of the operation lever. However, another mechanism may be used, for example, a structure including an actuator may be used. Further, in this embodiment, the description has been made with the overlock sewing machine. However, the threading device of the present invention may be applied to other lockstitch sewing machines, pattern sewing sewing machines, and the like.
【００３０】[0030]
【発明の効果】請求項１に記載の発明によれば、糸案内
手段によって糸巻きからの糸がミシン針の針穴近くで張
り出され、その糸は糸通しフックにより針穴にループ状
に引き込まれる。さらに、その糸が糸通しフックから外
れた場合には、捕捉移動手段の糸捕捉部によって捕捉さ
れ、捕捉移動手段の移動により糸端が針穴を通り抜ける
ことから、従来の糸通し装置のように途中で糸端がフリ
ーになってしまうことがなく、糸端を確実に針穴から引
き抜くことができる。したがって、糸通し作業が簡単に
かつ確実にできる。According to the first aspect of the present invention, the thread from the bobbin is protruded near the needle hole of the sewing machine needle by the thread guide means, and the thread is drawn into the needle hole in a loop by the threading hook. It is. Further, when the thread comes off from the threading hook, the thread is caught by the thread catching portion of the catching and moving means, and the thread end passes through the needle hole by the movement of the catching and moving means. The yarn end does not become free on the way, and the yarn end can be reliably pulled out from the needle hole. Therefore, the threading operation can be easily and reliably performed.
【００３１】請求項２に記載の発明によれば、捕捉移動
手段は、糸捕捉部が糸通しフックの下方に位置するよう
に、糸通しフック駆動手段に取り付けられていることか
ら、糸通しフックとともに移動しながら、糸通しフック
が捉えた糸が糸通しから外れた場合、確実に捕捉するこ
とができる。According to the second aspect of the present invention, the catching and moving means is attached to the threading hook driving means such that the thread catching portion is located below the threading hook. If the thread caught by the threading hook is removed from the threading while moving with the threading hook, the thread can be reliably captured.
【００３２】糸捕捉部が糸通しフックの近くに設けられ
ている場合、特に請求項２のように糸通しフック駆動手
段に取り付けられていると、糸通しフックにより糸を針
穴に引き込む作業の際に、糸捕捉部がミシン針などの他
の部材に接する可能性がある。しかし、請求項３の捕捉
移動手段であれば、糸捕捉部が他の部材に接すると後退
するように少なくとも一部が弾性部材からなることか
ら、ミシン針などに当接した場合糸捕捉部が逃げるよう
に後退するので、糸を引き込む作業に悪影響を及ぼすこ
とはない。When the thread catching portion is provided near the threading hook, particularly when the thread catching portion is attached to the threading hook driving means, the threading hook pulls the thread into the needle hole. At this time, the thread catching section may come into contact with another member such as a sewing needle. However, in the case of the catching and moving means of claim 3, since at least a part of the thread catching portion is made of an elastic member so as to retreat when the thread catching portion comes into contact with another member, when the thread catching portion comes into contact with a sewing machine needle or the like, the thread catching portion is Since it retreats so as to escape, it does not adversely affect the operation of drawing the thread.
【００３３】請求項４に記載の発明によれば、所定の位
置に設けられている糸切断部材によって、糸巻きからの
糸を決まった位置で切断できるので、常に糸端までの長
さが一定になる。よって、糸を捕捉後の捕捉移動手段の
移動先の位置と糸切断部材の位置を調節することで、糸
端が必ず針穴を通り抜けるように容易に構成することが
できる。また、請求項５に記載の発明のように、従来も
設けられていた空環カッターを糸切断部材としても兼用
すれば、部品点数を増やすことなく糸切断部材を設ける
ことができる。According to the fourth aspect of the present invention, the yarn from the bobbin can be cut at a predetermined position by the yarn cutting member provided at a predetermined position, so that the length to the yarn end is always constant. Become. Therefore, by adjusting the position of the movement destination of the catching movement unit after catching the yarn and the position of the yarn cutting member, it is possible to easily configure the yarn end to always pass through the needle hole. Further, as in the fifth aspect of the present invention, if the conventionally provided hollow ring cutter is also used as the thread cutting member, the thread cutting member can be provided without increasing the number of parts.
【図１】本発明のミシンの糸通し装置の一例を示す斜視
図である。FIG. 1 is a perspective view showing an example of a threading device for a sewing machine according to the present invention.
【図２】図１の糸通し装置に設けられる糸通しフック駆
動手段を示す斜視図である。FIG. 2 is a perspective view showing a threading hook driving means provided in the threading device of FIG. 1;
【図３】図２の糸通しフック部分の拡大図である。FIG. 3 is an enlarged view of a threading hook part of FIG. 2;
【図４】糸通しフック部分のみを一方のフックカバー側
から見た側面図であり、糸通し作業を説明するための図
である。FIG. 4 is a side view of only the threading hook portion viewed from one hook cover side, and is a diagram for explaining a threading operation.
【図５】捕捉移動手段の他の例の概略を示す図である。FIG. 5 is a diagram schematically showing another example of the capturing and moving means.
１ ロックミシン（ミシン） １ａ ミシンアーム ２，３ ミシン針 ４ 糸通し装置 １０ 糸案内手段 １１ 操作レバー １２ カッター（糸切断部材） １３ プリテンション部 １４ 針棒糸案内 １５ ワイパー ２０ 糸通しフック駆動手段 ２１ 糸通し軸 ２２ フック駆動板 ２３、２４ フックカバー ２５ 糸通しフック ２６ 弾性部材（捕捉移動手段） ２６ａ 糸捕捉フック（糸捕捉部） ３０ 捕捉移動手段 ３１ フック（糸捕捉部） ３４ バネ（弾性部材） Reference Signs List 1 lock sewing machine (sewing machine) 1a sewing machine arm 2, 3 sewing needle 4 threading device 10 thread guiding means 11 operating lever 12 cutter (thread cutting member) 13 pretension portion 14 needle bar thread guide 15 wiper 20 threading hook driving means 21 Threading shaft 22 Hook driving plate 23, 24 Hook cover 25 Threading hook 26 Elastic member (capture moving means) 26a Thread capturing hook (thread capturing section) 30 Capture moving means 31 Hook (thread capturing section) 34 Spring (elastic member)
Claims (5)
シン針の針穴に近接して張り出されるように移動した
後、糸を離して元の位置に復帰する糸案内手段と、 糸案内手段により針穴に近接して張り出された糸を捉え
て、この糸をループ状に針穴に引き込むように移動する
糸通しフックとを備えるミシンの糸通し装置において、 針穴に引き込まれた状態の糸が糸通しフックから外れた
場合に、その糸を糸通しフックから離間した位置で捕捉
する糸捕捉部を有し、糸捕捉部に捕捉された糸の端が針
穴を通り抜けるような位置まで移動する捕捉移動手段を
備えることを特徴とするミシンの糸通し装置。1. A thread guide means for gripping a thread from a thread spool, moving the gripped thread so as to protrude in the vicinity of a needle hole of a sewing needle, and then releasing the thread to return to an original position; A threading hook of a sewing machine having a threading hook that moves so as to catch the thread protruding in the vicinity of the needle hole by the thread guiding means and draws the thread into the needle hole in a loop shape; A thread catching portion that catches the thread at a position separated from the threading hook when the thread in the detached state comes off the threading hook, and the end of the thread captured by the thread catching portion passes through the needle hole A threading device for a sewing machine, comprising catching and moving means for moving to such a position.
に対して接近および離間するように駆動する糸通しフッ
ク駆動手段に対して、糸捕捉部が糸通しフックの下方に
位置するように、取り付けられていることを特徴とする
請求項１に記載のミシンの糸通し装置。2. A threading hook driving means for driving a threading hook to approach and separate from a sewing needle so that a thread catching portion is located below the threading hook. The threading device for a sewing machine according to claim 1, wherein the threading device is attached.
すると後退するように、少なくとも一部が弾性部材から
なることを特徴とする請求項１または２に記載のミシン
の糸通し装置。3. The threading machine according to claim 1, wherein at least a part of the catching / moving means is formed of an elastic member so that the thread catching portion is retracted when the thread catching portion comes into contact with another member. apparatus.
ことを特徴とする請求項１〜３のいずれかに記載のミシ
ンの糸通し装置。4. The threading device for a sewing machine according to claim 1, wherein a thread cutting member is provided at a predetermined position.
れた空環カッターであることを特徴とする請求項４に記
載のミシンの糸通し装置。5. The threading device for a sewing machine according to claim 4, wherein the thread cutting member is a hollow ring cutter fixed to a lower portion of the sewing machine arm.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000031896A JP2001218992A (en) | 2000-02-09 | 2000-02-09 | Threading device for sewing machine |
| TW90102090A TW509735B (en) | 2000-02-09 | 2001-02-01 | Needle threader for sewing machine |
| CNB011032294A CN1170973C (en) | 2000-02-09 | 2001-02-07 | Threading device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000031896A JP2001218992A (en) | 2000-02-09 | 2000-02-09 | Threading device for sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001218992A true JP2001218992A (en) | 2001-08-14 |
Family
ID=18556580
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000031896A Pending JP2001218992A (en) | 2000-02-09 | 2000-02-09 | Threading device for sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2001218992A (en) |
| CN (1) | CN1170973C (en) |
| TW (1) | TW509735B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003024677A (en) * | 2001-07-12 | 2003-01-28 | Janome Sewing Mach Co Ltd | Sewing machine provided with needle thread passing device |
| US6907834B2 (en) | 2003-01-22 | 2005-06-21 | Brother Kogyo Kabushiki Kaisha | Sewing machine |
| US6941881B2 (en) | 2003-01-22 | 2005-09-13 | Brother Kogyo Kabushiki Kaisha | Sewing machine |
| EP1967630A1 (en) * | 2007-03-06 | 2008-09-10 | Brother Kogyo Kabushiki Kaisha | Sewing machine with upper thread cutting and holding mechanisms |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5050493B2 (en) * | 2006-11-10 | 2012-10-17 | アイシン精機株式会社 | Sewing machine threading device |
| JP4139843B2 (en) * | 2007-01-25 | 2008-08-27 | 株式会社ジャガーインターナショナルコーポレーション | Sewing machine threading device |
| JP5265134B2 (en) * | 2007-05-15 | 2013-08-14 | Ｊｕｋｉ株式会社 | Sewing machine threading device |
| WO2011038532A1 (en) * | 2009-09-29 | 2011-04-07 | 吴渭水 | Fast threading machine needle apparatus |
-
2000
- 2000-02-09 JP JP2000031896A patent/JP2001218992A/en active Pending
-
2001
- 2001-02-01 TW TW90102090A patent/TW509735B/en not_active IP Right Cessation
- 2001-02-07 CN CNB011032294A patent/CN1170973C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003024677A (en) * | 2001-07-12 | 2003-01-28 | Janome Sewing Mach Co Ltd | Sewing machine provided with needle thread passing device |
| US6907834B2 (en) | 2003-01-22 | 2005-06-21 | Brother Kogyo Kabushiki Kaisha | Sewing machine |
| US6941881B2 (en) | 2003-01-22 | 2005-09-13 | Brother Kogyo Kabushiki Kaisha | Sewing machine |
| US7082886B2 (en) | 2003-01-22 | 2006-08-01 | Brother Kogyo Kabushiki Kaisha | Sewing machine |
| EP1967630A1 (en) * | 2007-03-06 | 2008-09-10 | Brother Kogyo Kabushiki Kaisha | Sewing machine with upper thread cutting and holding mechanisms |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1308158A (en) | 2001-08-15 |
| TW509735B (en) | 2002-11-11 |
| CN1170973C (en) | 2004-10-13 |
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