JPS5823344Y2 - sewing machine thread loop catcher - Google Patents

Description

【考案の詳細な説明】 この考案は第１，２図に示すように、下糸をもち全回転
すると共に下方位置の針１に対し外釜２の剣先３側の内
側案内４と針１に対してそれとは反対側に対向する外側
案内５とをもつ針案内体６を形威し、回転して針糸７を
もち上下動する針１と協同して錠縫目を形成するミシン
の糸輪捕捉器に関するものである。[Detailed explanation of the invention] As shown in Figs. 1 and 2, this invention has a bobbin thread that rotates completely and connects the inner guide 4 on the tip 3 side of the outer hook 2 and the needle 1 with respect to the needle 1 in the downward position. A sewing machine thread having a needle guide body 6 having an outer guide 5 facing on the opposite side and forming a lock stitch in cooperation with a rotating needle 1 having a needle thread 7 and moving up and down. This relates to a ring trap.

この種従来の全回転釜においては、針の下死点附近から
針糸ループを剣先が捕捉するまでの間における針案内体
６の外側案内５の外周形状が、第１図の二点鎖線に示す
ように大きくふくらみ、このため第３図に示すように針
が下死点から上昇することにより形成された針糸ループ
のうち、針１に対して剣先３とは反対側即ち針１の糸孔
８よりも右側に形成された右側ループ９が、回転する外
側案内５の外周に接触して二点鎖線のように針１を巻く
ようにして剣先側に倒れる現象が発生する。In this kind of conventional full-rotary hook, the outer circumferential shape of the outer guide 5 of the needle guide 6 from near the bottom dead center of the needle to when the needle thread loop is captured by the tip of the needle is shown in the chain double-dashed line in FIG. As shown in FIG. 3, the needle thread loop is formed by the needle rising from the bottom dead center as shown in FIG. A phenomenon occurs in which the right loop 9 formed on the right side of the hole 8 comes into contact with the outer periphery of the rotating outer guide 5 and winds the needle 1 as shown by the two-dot chain line, causing it to fall toward the tip side.

特にこの現象は撚れ易い化繊糸に多く発生し、第３図工
点鎖線のように右側ループ９が倒れると釜の剣先３は供
給側ループ１０とともに右側ループ９も捕捉するために
針糸は直ちに切れて縫目を形成できない欠点が生ずる。This phenomenon occurs particularly with synthetic yarns that are easy to twist, and when the right loop 9 falls down as shown by the dotted chain line in Figure 3, the hook point 3 captures the right loop 9 as well as the supply loop 10, so the needle thread immediately The disadvantage is that the seam cannot be formed due to breakage.

この考案は上記従来のものの欠点を除くことを目的とす
る。The purpose of this invention is to eliminate the drawbacks of the above-mentioned conventional ones.

この考案の実施例を図面により説明すると、釜自体の全
体的構成は第１，２図に示し上述した従来のものと同様
であり、特にこの考案は針１の下死点附近から釜１０の
剣先３が針糸の供給側ループ１０を捕捉するまでの間の
外側案内５の外周を第１図Ａに示すように、右側ループ
９と接触しないようにしたものである。An embodiment of this invention will be explained with reference to the drawings.The overall structure of the hook itself is the same as the conventional one shown in FIGS. 1 and 2 and described above. As shown in FIG. 1A, the outer periphery of the outer guide 5 is made not to come into contact with the right loop 9 until the tip 3 captures the supply loop 10 of the needle thread.

これにより、下死点となった針が上昇を始めて右側ルー
プ′９が形成されたとしても、その右側ループ９は外側
案内５の外周と接触しないのでその右側ループ９は第３
図の二点鎖線のように剣先３側に倒れることがなく、剣
先３は供給側ループ１０のみを捕捉し上下糸による正規
な錠縫目を形成する。As a result, even if the needle that has reached the bottom dead center begins to rise and a right-hand loop '9 is formed, the right-hand loop 9 does not come into contact with the outer circumference of the outer guide 5, so that the right-hand loop 9 is
The tip 3 does not fall to the side of the tip 3 as shown by the two-dot chain line in the figure, and the tip 3 captures only the loop 10 on the supply side to form a regular lock stitch using the upper and lower threads.

以上のようにこの考案は、針案内体６の外側案内５の外
周によって右側ループ９を倒すことがないから、右側ル
ープ９を剣先３が捕捉することによって発生する糸切れ
がなく縫目形成が確実となり、特にループが撚れ易い化
繊糸によっても確実に縫目が形成でき汎用性に優れる等
の効果がある。As described above, in this invention, since the right loop 9 is not tilted by the outer periphery of the outer guide 5 of the needle guide 6, there is no thread breakage that occurs when the right loop 9 is caught by the tip 3, and stitch formation is possible. In particular, the stitches can be reliably formed even with synthetic yarns whose loops are easily twisted, and the stitches are excellent in versatility.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は全回転系輪捕捉器の背面図であり、第２図は第
１図のＩＩ −ＩＩ断面図、第３図は従来のものの欠点
を説明するための解説図である。 ５は外側案内、６は針案内体、Ａは外周形状である。FIG. 1 is a rear view of the fully rotating wheel catcher, FIG. 2 is a sectional view taken along line II--II in FIG. 1, and FIG. 3 is an explanatory diagram for explaining the drawbacks of the conventional one. 5 is an outer guide, 6 is a needle guide, and A is an outer peripheral shape.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 針糸を保持して上下動する針と協同して縫目を形成する
ように、下糸巻を保持して回転し針糸の供給側のループ
を捕捉する剣先と剣先側及び反対側に針及び針糸を案内
する内外の案内を形威し、外側案内の外周を剣先が針糸
の供給側ループを捕捉するまでの間は針糸の右側ループ
に接触しないように形威したミシンの糸輪捕捉器。In order to hold the needle thread and form a stitch in cooperation with the needle moving up and down, there is a tip that holds the bobbin winder and rotates to catch the loop on the supply side of the needle thread, and a needle and a needle on the tip side and on the opposite side. A sewing machine thread ring that has inner and outer guides for guiding the needle thread, and is shaped so that the outer periphery of the outer guide does not come into contact with the right loop of the needle thread until the point of the outer guide captures the supply loop of the needle thread. Trap device.