JPS63272392A - Bobbin thread holding and regulating apparatus of sewing machine - Google Patents
Bobbin thread holding and regulating apparatus of sewing machineInfo
- Publication number
- JPS63272392A JPS63272392A JP10713487A JP10713487A JPS63272392A JP S63272392 A JPS63272392 A JP S63272392A JP 10713487 A JP10713487 A JP 10713487A JP 10713487 A JP10713487 A JP 10713487A JP S63272392 A JPS63272392 A JP S63272392A
- Authority
- JP
- Japan
- Prior art keywords
- thread
- bobbin thread
- bobbin
- screw
- mounting base
- 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
- 238000009958 sewing Methods 0.000 title claims description 23
- 230000001105 regulatory effect Effects 0.000 title 1
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000009966 trimming Methods 0.000 description 16
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- SUDBRAWXUGTELR-HPFNVAMJSA-N 5-[[(2r,3r,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxymethyl]-1h-pyrimidine-2,4-dione Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OCC1=CNC(=O)NC1=O SUDBRAWXUGTELR-HPFNVAMJSA-N 0.000 description 1
- 101100014539 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) get-1 gene Proteins 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明はミシンの下糸保持調節装置、特にミシンの糸
切り後の次の縫目形成に適し1こ挾持圧で下糸を保持し
、しかもその挾持圧を適宜に調整できるようにし1こミ
シンの下糸挾持装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] This invention is a bobbin thread holding and adjusting device for a sewing machine, which is particularly suitable for forming the next stitch after thread trimming in a sewing machine, and which holds the bobbin thread with one pinch pressure. Moreover, the present invention relates to a bobbin thread clamping device for a one-piece sewing machine, which allows the clamping pressure to be adjusted appropriately.
従来、実開昭60−148580号公報に示されている
ように、上糸および下糸を切断する糸切り刃の近傍に、
切断糸の下糸を挾持する下糸保持板を設けるとともに、
この下糸保持板の下糸挾持力を調節可能な調節手段を設
けTコミシンの糸切り装置は一般に知られている。この
従来のミシンの糸切り装置では、下糸を挾持する下糸保
持板の先端部が、ミシンの組立時あるいは釜部分の浦掃
時に、ブラシ等に接触して液形し1こ場合には、下糸を
挾持する圧力か不安定になるという問題がある。Conventionally, as shown in Japanese Utility Model Application Publication No. 60-148580, a thread cutting blade for cutting the upper thread and lower thread is provided with a
In addition to providing a bobbin thread holding plate that holds the bobbin thread of the cut thread,
A thread cutting device for a T-comms sewing machine is generally known, which is provided with an adjusting means that can adjust the bobbin thread clamping force of the bobbin thread holding plate. In this conventional sewing machine thread trimming device, the tip of the bobbin thread holding plate that clamps the bobbin thread comes into contact with a brush or the like when assembling the sewing machine or cleaning the hook, causing liquid to form. However, there is a problem in that the pressure used to clamp the bobbin thread becomes unstable.
また、調節手段が下糸保持板の先端部η)ら離れた位置
に配されている1こめ、調節手段を操作しても、下糸に
対し均等に圧力が伝わらす、調節手段としての機能が充
分lζ得られないという問題点がある。In addition, since the adjusting means is located at a distance from the tip η) of the bobbin thread holding plate, even if the adjusting means is operated, the pressure is evenly transmitted to the bobbin thread. There is a problem that sufficient lζ cannot be obtained.
さらに、調節手段は調節状態を口・、りする機構を有し
ていないため、ミシンの振動等により調節状態が変動し
てしまい、下糸保持板にJる下糸挾持力が変化してし才
うという問題もある。特に、下糸挾持力が10〜20g
の低テンシロン時にこの傾向が著しい。Furthermore, since the adjusting means does not have a mechanism for adjusting the adjustment state, the adjustment state may fluctuate due to vibrations of the sewing machine, etc., and the bobbin thread clamping force exerted on the bobbin thread holding plate may change. There is also the issue of getting older. In particular, the bobbin thread clamping force is 10 to 20 g.
This tendency is remarkable at low tensilons.
ヵ)力)る問題点を解決するために出願人+、1待願昭
61− 号において、下糸を安定して保持するこ
とができるとと6に、調節機構による下糸挾持力調節を
安定させることができるミシンの糸切り装置を提案し1
こ。この特願昭61− 号のものにおいては、
上下「ζ往動する針と協働しで本縫縫目を形成する釜の
近傍を、往復動可能な糸切り刃が針のその下死点附近力
)らその上死点附近に至る迄の糸切りサイクル間釜内の
ボビン力)ら布の縫綴部に至る下糸を捕捉する位置迄糸
切り刃が往動し、Vくいで糸切り刃が下糸を捕捉して元
の位置へ復動する際、下糸をボビン力)ら所要長さだけ
引出し、固定刃と協働して下糸を切断する。下糸の切断
端は糸切り刃と下糸保持板との間で弾性的に挾持され保
持される。この保持力は調節機構の調節ねじン′!!螺
進さセ調節する事により、この調節ねじの螺進に関連し
て下糸保持板裏面Eζ直接抑圧しているコイルスプリン
グの圧縮量が変化してコイルスプリングの圧縮力が調節
され、その後ロー・フナ・・1トにまり調節ねじが緩ん
でズレないように固定される。(6) In order to solve the problem of force), Applicant +, in Application No. 1986, proposes that the bobbin thread can be stably held, and (6) the bobbin thread clamping force can be adjusted by an adjustment mechanism. We proposed a thread cutting device for sewing machines that can stabilize the sewing machine.1
child. In this patent application No. 1983,
The thread cutting blade, which can reciprocate near the hook that forms the lockstitch stitch in cooperation with the needle moving up and down, moves from the needle's bottom dead center to the needle's top dead center. During the thread trimming cycle, the thread trimming blade moves forward from the bobbin force inside the hook to the position where it captures the bobbin thread leading to the stitched part of the fabric, and the thread trimming blade captures the bobbin thread using the V-shaped hook and returns to its original position. When moving back to the bobbin, the bobbin thread is pulled out by the required length (bobbin force) and cut by the fixed blade.The cut end of the bobbin thread is cut between the thread cutting blade and the bobbin thread holding plate. It is elastically clamped and held. By adjusting the threading of the adjustment screw of the adjustment mechanism, this holding force directly suppresses the back surface Eζ of the bobbin thread holding plate in relation to the threading of this adjustment screw. The compression force of the coil spring is adjusted by changing the amount of compression of the coil spring, and then the adjustment screw is fixed in place so that it does not loosen and shift.
〔発明が解決し、C’lとする問題点〕前記の糸切り装
置は以上のように構成されているので、下糸保持力を調
節する際、ねじ回しにて調節ねじを肖節し、この調節状
態をミシンの振動等にJリオれろ事なく固定するとき、
調節ねじを一万の手に持つ1ごねじ回し17て固定しな
から他方の片手にてスパナ等にでロー」フナ・ットを締
め付けなければならず、面倒であつ1こ。まfこ、この
調節ねじ及びロック子・リドは、薄い板バネで構成され
1こ下糸保持板の裏面でしη)も釜や送り、送り台等の
ミシン縫綴機能部品が密集し1こ空間の少いスペースに
配置せざるを得す、スパナにてロック子・リドを回動固
定する際、口・・・フナ、・・トの2面巾にスパナの2
面巾を合わせるのが難しい上、スパナの回動ストローク
も充分とり得す、スパナにて014クナ、・・トを微少
量回動させTこ後、又更にスパナと口・・クナ=lトの
それぞれの2面巾を合わせ1こ上で微少量回動させる作
業を何度も繰り返して固定する等の欠点があつ1こ。こ
の繰り返し作業時、他方の片手に持つfこスパナが薄い
板バネ等に当って変形させ保持機能が失われ1コリ、釜
や送り歯等にスパナが当ってこれらに傷を付は糸滑りか
悪くなり、縫綴機能が損われる等の欠点があつ1こ。ま
1コミシン組付けや針とカマの隙間調節の際、釜・糸切
り装置を取付け1こ取付台と異るべ・・・トの位置に調
節機構部分が取付けである1こめ、調節ねじやコイルを
スプリングと下糸保持板がズして位置合せ直す必要があ
つ1こ。[Problems solved and resolved by the invention] Since the thread trimming device is constructed as described above, when adjusting the bobbin thread holding force, it is necessary to turn the adjusting screw with a screwdriver, When fixing this adjustment state without being affected by vibrations of the sewing machine, etc.,
You have to hold the adjustment screw in one hand and use a screwdriver 17 to fix it, and then use the other hand to tighten the bolt with a wrench, which is a hassle. This adjusting screw, locking element, and lid are made of thin leaf springs and are located on the back side of the bobbin thread holding plate. This has to be placed in a small space, so when rotating and fixing the lock element/lid with a wrench, use the two sides of the wrench to
It is difficult to match the width of the face, and the rotation stroke of the wrench is sufficient. There is one drawback, such as the work of combining the widths across two sides and rotating a small amount over and over again to fix them. During this repeated work, the wrench held in one hand hits a thin leaf spring, deforms it, and loses its holding function, and the wrench hits the hook, feed dog, etc. and damages them, causing thread slippage. There is one drawback, such as deterioration and loss of sewing function. When assembling the sewing machine or adjusting the gap between the needle and the hook, install the hook and thread trimming device in a position that is different from the mounting base. There was one case where I had to reposition the coil because the spring and bobbin thread holding plate were misaligned.
この発明は以上のような問題点を解消するfこめになさ
れ1こもので、両手を必要とせず片手のみをで持つ1こ
ねじ回しにて簡便に手早く調節ねじを調節固定して各種
の太さ、材質の下糸を使用しても縫い始めの目飛び解消
する事を目的とする。更督ζは、釜、糸切り装置を取付
けた取付台に一体に下糸調節機構を設は取付台ユニー・
トで組立調整可能ならしめる事を目的とする。This invention has been made to solve the above-mentioned problems, and it is possible to easily and quickly adjust and fix the adjusting screw with a single screwdriver using only one hand without the need for both hands. The purpose is to eliminate skipped stitches at the beginning of sewing even if a bobbin thread made of the same material is used. Sarado ζ has a lower thread adjustment mechanism integrated into the mounting base on which the hook and thread trimming device are attached.
The purpose is to make it possible to assemble and adjust it at the same time.
〔問題点を解決する1こめの手段〕
この発明に係るミシンの下糸保持調節装置は、ミシンベ
ーJト憂ζ固定し1こ取付台に支持しTこ固定刃と、針
に連なる針糸及び下糸を捉えて固定刃と協働し前記2本
糸を切断するように針板下面と釜との間で固定刃の下面
に沿って往復可能に取付台に支持し1こ糸切り刃と、先
端を常には糸切り刃の下面Eζ接触させるように基部を
取付台に固定し1こ下糸保持体と、基部を取付台に固定
し1こ調節ねじ支工板とを設けて、その調節ねじ支工板
の先端に下糸保持体に対向させたコイルスプリングを支
承才る調節ねじを螺進膨面可能に支承すると共にその調
節ねじと交わる切り割り部とその切り割り部に直交する
ねじとを有してそのねじにて切り割り部を介して調節ね
じを固定保持するまうCζし1こものである。[First Means to Solve the Problems] The bobbin thread holding and adjusting device of the sewing machine according to the present invention has a sewing machine base J fixed to a mounting base, a fixed blade T fixed blade, a needle thread connected to a needle, A single thread cutting blade is supported on a mounting base so as to be reciprocatable along the lower surface of the fixed blade between the lower surface of the throat plate and the shuttle so as to capture the bobbin thread and cut the two threads in cooperation with the fixed blade. , the base is fixed to the mounting base so that the tip is always in contact with the lower surface Eζ of the thread trimming blade, and a bobbin thread holder is fixed to the mounting base, and an adjustment screw support plate is provided to fix the base to the mounting base. An adjustment screw supporting a coil spring facing a bobbin thread holder is supported at the tip of the adjustment screw support plate so as to be able to expand in a spiral manner, and a cut portion that intersects with the adjustment screw and a screw orthogonal to the cut portion. The screw has a Cζ which fixes and holds the adjusting screw through the cut portion.
この発明におけるミシンの下糸保持調節装置は、糸切り
後、次の縫目形成に適しπ下糸の挾持圧力が片手で1本
のドライバーにて容易に調節可能で、かつ、その調節状
態を振動等によりズレる事なく継続維持できるので、下
糸がはすれて目飛びが庄する恐れがなく美麗力)つ強度
的に信頼性のある縫目を形成できる。The bobbin thread holding and adjusting device of the present invention is suitable for forming the next stitch after thread trimming, and the clamping pressure of the bobbin thread can be easily adjusted with one hand using a screwdriver, and the adjustment state can be adjusted easily. Since it can be maintained continuously without shifting due to vibrations, etc., there is no risk of the bobbin thread coming off and skipping stitches, and it is possible to form stitches that are both beautiful and strong.
第1図〜第6図はこの発明の一実施例を示すもので(1
)は図示しない針板の下方配置されると共に、水平面内
を回転し公知の針と協働して本縫縫目を形成する1こめ
の釜で、針糸を捕捉する外釜(2)と、この外釜(2)
円6ζ支承され内部に下糸(4)用のボビン(図示せす
りを収納する内釜(3)とを有している。Figures 1 to 6 show one embodiment of this invention (1
) is located below the throat plate (not shown), and is a one-piece hook that rotates in a horizontal plane and cooperates with a known needle to form lockstitch stitches, and includes an outer hook (2) that captures the needle thread. , this outer pot (2)
It is supported by a circle 6ζ and has an inner hook (3) for storing a bobbin (not shown) for the bobbin thread (4) inside.
(5)はミシンベ・ットにねじ等により上記釜り1)と
後述する糸切り装置とを備丸た取付台、(6)は糸切り
(7)を取付は往復する移動体で、上記取付台(5)に
摺動可能に嵌合されている。(8)は上記糸切り刃(7
)の先端部に糸捕捉用フリク部(9)および切刃QOと
ともに形成され1こ糸さはき部、αυは糸切り刃(7)
の近傍に固定配置され1こ固に刃で、糸切り刃(7)と
協働し、糸切り刃(7)により捕捉し1こ下糸(4)を
切断する。(ハ)は下糸保持板で、上記糸切り刃(7)
の下方に位置し、糸切断後の下糸(4)を下糸接触部α
3と糸切り刃(7)との間で挾持して保持する。Q4)
は上記下糸接触部0によろ下糸挾持力を調節する1こめ
調節機構で取付台(5)にねじ止めされ1こ逆り字状の
調節ねじ支工板(イ)に螺装され1こ調節ねじQ9と、
この調節ねじQ9の調節状態を固定才ろ1こめに調節ね
じ支工板(至)には、先端部力)ら切り割り部aQとが
設けられ、この切り割り部αGを直交して穴部aη及び
ぬねじ部(ト)が設けられ、ねじ@を締付ける事により
切り割り部が収縮して調節ねじ01を固定するようにな
りているとともに、上記調節ねじQ9の操作にまり下糸
接触部的のはね圧を調節するコイルスプリング■υが調
節ねじ01の棒先翰部分遊嵌して取付けられコイルスプ
リング■υが傾斜して下糸保持板@を押圧する事および
落下離脱する事を防止するよう取り付けられでいる。(5) is a mounting base that attaches the hook 1) and the thread trimming device (described later) to the sewing machine bed using screws, etc.; (6) is a moving body that reciprocates and attaches the thread trimmer (7); It is slidably fitted into the mounting base (5). (8) is the thread cutting blade (7)
) is formed with a thread catching flick part (9) and a cutting blade QO, and αυ is a thread cutting part (7).
The lower thread (4) is fixedly disposed near the thread cutter and works in cooperation with the thread cutter blade (7) to catch the bobbin thread (4) and cut the bobbin thread (4). (c) is the bobbin thread holding plate, and the thread cutting blade (7)
The lower thread (4) after thread cutting is placed below the lower thread contact area α.
3 and the thread cutting blade (7). Q4)
is screwed to the mounting base (5) with a single adjustment mechanism that adjusts the bobbin thread holding force by the bobbin thread contact portion 0, and is screwed to the inverted-shaped adjustment screw supporting plate (A). Adjustment screw Q9 and
To fix the adjustment state of the adjustment screw Q9, the adjustment screw support plate (end) is provided with a cutout aQ from the tip end, and holes aη and A threaded part (T) is provided, and when the screw @ is tightened, the cut part contracts and fixes the adjustment screw 01, and the bobbin thread contact part that gets stuck in the operation of the adjustment screw Q9 is The coil spring ■υ that adjusts the spring pressure is installed by loosely fitting the tip of the rod of the adjustment screw 01, so as to prevent the coil spring ■υ from tilting and pressing the bobbin thread holding plate @ and from falling and detaching. It is attached.
(イ)は上記固定刃(6)を取付けるメス台で、上記取
付台(5)に上下方向に調整可能に取付けられて、糸切
り刃(7)の刃部と糸切断可能な噛合い状態を得られる
よ−1になっている。翰は上記取付台(5)に回動可能
に支承さtllこa勤腕で、先端部にローラー(ハ)を
有し上記移駿体(6)の溝(ハ)に嵌合している。(A) is a female stand on which the fixed blade (6) is attached, and it is attached to the mounting base (5) so as to be adjustable in the vertical direction, and is engaged with the blade part of the thread cutting blade (7) so that the thread can be cut. You can get -1. The rod is rotatably supported on the mounting base (5), has a roller (c) at its tip, and fits into the groove (c) of the moving body (6). .
次に上記装置の動作について説明する縫製終了時、作業
者が図示しないペダルを操作すると糸切りサイクル間、
揺動腕@が揺動し、これによりローラムを介して移動体
(6)が水平面を血進し、移動体(6)に取付けられ1
こ糸切り刃(7)が往動する。このときの糸切り刃(7
)の動作は、針が下死点附近より上昇し釜糸抽捉部(2
)が針糸@を捕捉し1コ直後に移!!jf!L 始め、
針糸ループ内に糸さはき部(8)を突入させ、針側に残
す針糸@と布長側に残す針糸C27’)と(ζ仕分け、
さらに糸切り刃(7)は下糸(4)の下側を通過し往動
する。さらに糸切りサイクル間のミシン同転に伴い、糸
切り刃(7)は今度往¥IIIL、始め、仕分け1こ針
糸(27)と下糸(4)は糸切り刃(7)の糸捕捉用フ
−Iり部(9)に捕捉される。そしてさらに往動すると
固定刃α刀との協働薔ζより復動完了直前の位置で2本
の糸は適量の長さで切断され切断後の下糸(4)の切断
端は糸切り刃(7)と下糸保持板@の下糸接触部0との
間で挾持されて保持される。Next, we will explain the operation of the above device. At the end of sewing, when the operator operates a pedal (not shown), during the thread trimming cycle,
The swinging arm @ swings, and as a result, the movable body (6) advances on the horizontal plane via the roll ram, and is attached to the movable body (6).
The thread cutting blade (7) moves forward. At this time, the thread cutting blade (7
), the needle rises from near the bottom dead center and reaches the hook thread retrieval section (2).
) captures the needle thread @ and transfers it immediately after the first thread! ! jf! L beginning,
Insert the thread cutting part (8) into the needle thread loop, and separate the needle thread @ left on the needle side, the needle thread C27' left on the fabric length side, and (ζ sorting,
Furthermore, the thread cutting blade (7) passes under the bobbin thread (4) and moves forward. Furthermore, as the sewing machine rotates simultaneously between thread trimming cycles, the thread trimming blade (7) moves forward this time, and the beginning and sorting 1st needle thread (27) and bobbin thread (4) catch the thread of the thread trimming blade (7). It is captured by the flywheel section (9). Then, when it moves further forward, the two threads are cut to an appropriate length just before the return movement is completed due to the cooperation with the fixed blade α sword, and the cut end of the bobbin thread (4) after cutting is cut by the thread cutting blade. (7) and the lower thread contact portion 0 of the lower thread holding plate @.
この保持力はコイルスプリング?υの圧縮単に比例した
圧縮力によるものであるか、このコイリレスプリングQ
rJの圧縮量は調節ねじagの螺進−節により調節され
る。この調節作業を詳述すると、先ずねじ(至)を緩め
る事により、/+I節ねじ支工板α9の切りIJJ ’
)部αQが緩み調節ねじQ9が螺進調節可能となった状
態でこの調節ねじQ9を螺進調節し、コイルスプリング
Q1)の圧縮量をW1整して所要の保持力に調節した後
、ねじ(イ)を締め付けると切り割り部αGが収縮して
調節ねじQ9が締め付けられると、その螺進が固定され
る。Is this holding force a coil spring? Is the compression of υ simply due to a proportional compressive force?
The amount of compression of rJ is adjusted by the threaded joint of adjustment screw ag. To explain this adjustment work in detail, first, by loosening the screw (to), /+I section screw support plate α9 cut IJJ'
) section αQ is loosened and the adjustment screw Q9 can be adjusted in a spiral manner, adjust the adjustment screw Q9 in a spiral manner, adjust the compression amount of the coil spring Q1) to the required holding force, and then tighten the screw. When (A) is tightened, the cut portion αG contracts, and when the adjustment screw Q9 is tightened, its screw movement is fixed.
この発明によるミシンの下糸保持調節装置は、以上説明
しTコとおり、下糸保持体の挾持圧力が調整ねじによっ
て自由に調節できる1こめ揮々の糸の太さ、材質に応じ
た挾持圧力を調節することにより、糸切り後、次のω目
形成に適し1こ下糸の挾持圧力が、片手T−1本のドラ
イバーCζて容易に調節可能で、力)つその調節状態を
振動等によりズレる事なく継続維持できるので、下糸が
はずれて目飛びが生ずる恐れがなく、美麗かつ強度的ζ
ζ信頼性のある縫目を形成できる効果がある。As explained above, the bobbin thread holding and adjusting device for a sewing machine according to the present invention is such that the clamping pressure of the bobbin thread holder can be freely adjusted using the adjustment screw. By adjusting the force, the clamping pressure of one bobbin thread suitable for forming the next ω stitch after thread cutting can be easily adjusted with one hand T and one screwdriver Cζ, and the adjustment state can be adjusted by vibration, etc. Because it can be maintained continuously without slipping, there is no risk of the bobbin thread coming off and skipping, making it beautiful and strong.
ζIt has the effect of forming reliable seams.
ま1こ、−節ねじ支工板が取付台lr一体に取付けられ
ているので釜、糸切り装置をユニーlトでミシン本体に
組付ける前に調節可能となる。ま1こ針と釜のスキマ粛
を調節する際、下糸保持板とコイルスプリングが芯ずれ
する事も無い効果がある。Since the -knot screw support plate is integrally attached to the mounting base lr, it is possible to adjust the hook and thread trimming device as a unit before assembling it to the sewing machine body. When adjusting the clearance between the hook and the hook, there is no possibility that the bobbin thread holding plate and the coil spring will be misaligned.
第1図番スこの発明の一実施例暑ζまる下糸保持装部を
示す側面図、第2図はその平面図、第8図は糸切り刃1
面定刃、釜の要部平面図、第4因はm1図のIV−F/
細断面図、第5図は第1図のV−V線の要部断面図、第
6囚は要部斜視図である。
因において、(1)は釜、(2)は外釜、(3)は内釜
、(4)は下糸、(5)は取付台、(6)は移動体、(
7月J糸切り刃、(8)は糸さばき部、(9)はフ、・
・り部、αQは切刃、αηは固定刃、(2)は下糸保持
板、Uは糸接触部、α匂は調節機構、(至)は調節ねじ
支工板、αGは切り割り部、αのは穴部、(至)はめね
じ部、αGは1節ねじ、翰は棒先部、Q′Dはコイルス
プリング、(イ)はメス台、(ハ)は揺動腕、(至)は
ローラー、(イ)は溝、(至)はねじである。
なお図中、同一符号は同一、又は相当部分を示才5、Fig. 1 is a side view showing a bobbin thread holding device according to an embodiment of the present invention, Fig. 2 is a plan view thereof, and Fig. 8 is a thread cutting blade 1.
Surface fixed blade, main part plan view of the pot, the fourth factor is IV-F/ of m1 diagram
FIG. 5 is a cross-sectional view of a main part taken along the line V-V in FIG. 1, and FIG. 6 is a perspective view of a main part. (1) is the hook, (2) is the outer hook, (3) is the inner hook, (4) is the bobbin thread, (5) is the mounting base, (6) is the movable body, (
July J thread cutting blade, (8) is thread handling part, (9) is F,・
・Ri part, αQ is the cutting blade, αη is the fixed blade, (2) is the bobbin thread holding plate, U is the thread contact part, α is the adjustment mechanism, (to) is the adjustment screw support plate, αG is the cutting part, α is the hole, (to) is the female thread, αG is the one-section thread, the handle is the tip of the rod, Q'D is the coil spring, (a) is the female stand, (c) is the swinging arm, (to) is a roller, (a) is a groove, and (to) is a screw. In addition, in the figures, the same reference numerals are the same or corresponding parts are indicated by 5,
Claims (1)
固定刃と、針に連なる針糸及び下糸を捉えて固定刃と協
働して上記針糸及び下糸を切断するように上記針板下面
と釜との間で、固定刃の下面に沿って往復動可能に取付
台に支持した糸切り刃と、先端を常には糸切り刃の下面
に接触させるように基部を取付台に固定した下糸保持体
と、基部を取付台に固定支持し、その先端部に下糸保持
体に対向させたコイルスプリングを支承する調節ねじを
有すると共に、その調節ねじと交わる切り割り部と、そ
の切り割り部と直交するねじとを有して調節ねじの螺進
位置を調節可能とすると共に、その調節ねじの螺進位置
を上記切り割り部に直交するねじにて固定する調節ねじ
支エ板とを備えたミシンの下糸保持調節装置。A fixed blade supported on a mounting base fixed to the sewing machine bed below the throat plate, and a fixed blade that catches the needle thread and bobbin thread connected to the needle and works together with the fixed blade to cut the needle thread and bobbin thread. The thread cutting blade is supported on a mounting base so that it can reciprocate along the bottom surface of the fixed blade between the bottom surface of the plate and the hook, and the base is fixed to the mounting base so that the tip is always in contact with the bottom surface of the thread cutting blade. The bobbin thread holder has a base fixedly supported on a mounting base, and has an adjustment screw at its tip that supports a coil spring facing the bobbin thread holder, and a cutout that intersects with the adjustment screw, and a cutout that intersects with the adjustment screw. and an adjustment screw support plate having a screw orthogonal to the cut portion to enable adjustment of the screwing position of the adjusting screw, and fixing the screwing position of the adjusting screw with a screw orthogonal to the cut portion. Lower thread retention adjustment device for sewing machines.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10713487A JPS63272392A (en) | 1987-04-30 | 1987-04-30 | Bobbin thread holding and regulating apparatus of sewing machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10713487A JPS63272392A (en) | 1987-04-30 | 1987-04-30 | Bobbin thread holding and regulating apparatus of sewing machine |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS63272392A true JPS63272392A (en) | 1988-11-09 |
Family
ID=14451366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10713487A Pending JPS63272392A (en) | 1987-04-30 | 1987-04-30 | Bobbin thread holding and regulating apparatus of sewing machine |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63272392A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH047074U (en) * | 1990-05-01 | 1992-01-22 |
-
1987
- 1987-04-30 JP JP10713487A patent/JPS63272392A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH047074U (en) * | 1990-05-01 | 1992-01-22 |
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