JPH0724278U - Sewing machine needle hole device - Google Patents
Sewing machine needle hole deviceInfo
- Publication number
- JPH0724278U JPH0724278U JP5322993U JP5322993U JPH0724278U JP H0724278 U JPH0724278 U JP H0724278U JP 5322993 U JP5322993 U JP 5322993U JP 5322993 U JP5322993 U JP 5322993U JP H0724278 U JPH0724278 U JP H0724278U
- Authority
- JP
- Japan
- Prior art keywords
- needle
- sewing
- rotary hook
- hole
- thread
- 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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Abstract
(57)【要約】
【目的】 ミシンの縫い針により形成される糸ループを
回転釜の剣先が捕捉確実な位置に設定し、適正な縫い目
を形成する。
【構成】 縫い針Nの昇降経路N1の中心より回転釜3
の剣先5側に偏奇した針穴を含む針貫通穴Bと、縫い針
Nの昇降経路N1を間にして回転釜3の剣先5とは反対
側の針貫通穴Bの内側面に、縫い針Nが保持する縫い糸
1と接する当接部Cと、を設けてミシンの針穴装置Aを
構成し、この当接部Cと縫い糸1とを接触させることに
より、糸ループ1aを回転釜3の剣先寄りに大きく形成
させる。
(57) [Summary] [Purpose] The thread loop formed by the sewing needle of the sewing machine is set at a position where the sword tip of the rotary hook captures it and forms a proper stitch. [Structure] The rotary hook 3 from the center of the ascending / descending path N1 of the sewing needle N
On the inner surface of the needle through hole B of the rotary hook 3 on the opposite side of the needle point 5 of the rotary hook 3 with the needle through hole B including an eccentric needle hole on the side of the sword tip 5 and the hoisting path N1 of the sewing needle N in between. A needle hole device A of the sewing machine is provided by providing an abutting portion C that comes into contact with the sewing thread 1 held by N, and the abutting portion C and the sewing thread 1 are brought into contact with each other to move the thread loop 1a to the rotary hook 3 Make it large near the sword.
Description
【0001】[0001]
この考案は、ミシンの縫い針により上糸が布地を貫通して形成される糸ループ を回転釜の剣先が捕捉確実な位置に設定するミシンの針穴装置に関するものであ る。 The present invention relates to a needle hole device of a sewing machine, which sets a thread loop formed by a needle thread of a sewing machine through which a needle thread penetrates through a cloth at a position where a sword tip of a rotary hook catches it securely.
【0002】[0002]
図6は、ミシンの針穴装置Aを示す図であり、このミシンの針穴装置Aは、円 形の針貫通穴Bを備えた針ガイド部材A1と、この針ガイド部材A1を着脱自在 に支持する針板A2と、を備えて構成され、被縫製物Wと後述の回転釜3との間 に設置されている。 そして、このミシンの針穴装置Aは、種々の被縫製物Wに応じて縫い針Nを交 換した際、その縫い針Nの太さに応じた針貫通穴Bを有する。 この針ガイド部材A1は針貫通穴Bの中心位置と縫い針Nの昇降経路N1とが 一致するように針板A2に設置されている。 FIG. 6 is a view showing a needle hole device A of the sewing machine. The needle hole device A of the sewing machine is such that a needle guide member A1 having a circular needle through hole B and the needle guide member A1 are detachable. The needle plate A2 that supports the needle plate A2 is provided, and is installed between the workpiece W and the rotary hook 3 described later. Further, the needle hole device A of this sewing machine has a needle through hole B corresponding to the thickness of the sewing needle N when the sewing needle N is exchanged according to various sewing objects W. The needle guide member A1 is installed on the needle plate A2 such that the center position of the needle through hole B and the ascending / descending path N1 of the sewing needle N coincide with each other.
【0003】 また、Nは不図示の昇降手段により昇降をなす縫い針であり、この縫い針Nは 先端部の近傍に針穴Naを備えていて、この針穴Naには縫い糸1(上糸)が挿 通されている。 そして、3は回転釜(垂直全回転釜、水平全回転釜、半回転釜等であって、図 例は垂直全回転釜を示している)であり、この回転釜3は、縫い糸(下糸)を巻 回したボビンを格納する中釜3bと、剣先5を有し不図示の回転手段により回転 をなす外釜3aと、を備えていてる。Further, N is a sewing needle which is moved up and down by a lifting means (not shown), and this sewing needle N is provided with a needle hole Na in the vicinity of the tip portion thereof, and the sewing thread 1 (upper thread 1 ) Is inserted. 3 is a rotary hook (a vertical full rotary hook, a horizontal full rotary hook, a half rotary hook, etc., and the vertical full rotary rotary hook is shown in the figure), and this rotary hook 3 is a sewing thread (lower thread). 2) is provided with an inner hook 3b for storing a bobbin wound with a sword) and an outer hook 3a having a sword tip 5 and rotated by a rotating means (not shown).
【0004】 次に図6に示した針穴装置の作用を図7および図8により説明する。 縫い針Nは、図7に示すように被縫製物Wを貫いてミシンの針穴装置Aの針貫 通穴Bを通り針板A2の下方まで下降し、次いで図8に示すように上昇して、被 縫製物Wおよび針板A2の下方で縫い糸1を撓ませて、針穴Naの両側部にルー プ1aを形成する。 そして、回転釜3は、縫い針Nが形成した糸ループ1aを、外釜3aの剣先5 で捕捉し、中釜3bが格納するボビンの縫い糸(下糸)と捕捉した糸ループ1a (上糸)とを交差させるように回転して縫い目を形成する。Next, the operation of the needle hole device shown in FIG. 6 will be described with reference to FIGS. 7 and 8. The sewing needle N passes through the workpiece W as shown in FIG. 7, passes through the needle through hole B of the needle hole device A of the sewing machine, and descends below the needle plate A2, and then ascends as shown in FIG. Then, the sewing thread 1 is bent below the sewing target W and the needle plate A2 to form the loops 1a on both sides of the needle hole Na. Then, the rotary hook 3 catches the thread loop 1a formed by the sewing needle N with the sword tip 5 of the outer hook 3a, and the thread loop 1a (upper thread) that has been caught with the sewing thread (lower thread) of the bobbin stored in the inner hook 3b. ) Rotate to intersect and form a seam.
【0005】 ところで、回転釜3は、縫い針Nと接近、離間するように位置調節が可能とな っていて、被縫製物Wに応じて異なる太さの縫い針Nと交換した場合においても 縫い針Nと剣先5との間隙を一定にすることができるようになっている。 また、回転釜3の中釜3bには、中釜3bが外釜3aに追従して回転すること がないように中釜押え(不図示)が設けられていて、この中釜押えには、縫い針 Nの昇降経路N1を間にして回転釜3と反対側に位置する糸ループ受け部材(不 図示)が設置されている。 そして、この糸ループ受け部材と糸ループ1aとを接触させることで糸ループ 1aを回転釜3の剣先方向に導き、剣先5が適正に糸ループ1aを捕捉できるよ うにしている。By the way, the rotary hook 3 can be adjusted in position so as to approach and separate from the sewing needle N, and even when the rotary hook 3 is replaced with a sewing needle N having a different thickness depending on the workpiece W. The gap between the sewing needle N and the sword tip 5 can be made constant. Further, the inner hook 3b of the rotary hook 3 is provided with an inner hook presser (not shown) so that the inner hook 3b does not follow the outer hook 3a to rotate. A thread loop receiving member (not shown) located on the opposite side of the rotary hook 3 with the lifting path N1 of the sewing needle N in between is installed. The thread loop receiving member and the thread loop 1a are brought into contact with each other to guide the thread loop 1a toward the sword tip of the rotary hook 3 so that the sword tip 5 can properly capture the thread loop 1a.
【0006】[0006]
しかしながら上記従来のミシンには次のような問題がある。 すなわち、種々の被縫製物Wに応じて縫い針Nを交換して、その縫い針Nの太 さに応じて回転釜3の剣先5と縫い針Nとの位置を調節すると、この回転釜3に 設置された糸ループ受け部材の位置も変化してしまうので、回転釜3の設定位置 によっては糸ループ受け部材が所定の動作をなし得なくなる場合が生じる。 すなわち、細い縫い針Nの使用時、この縫い針Nと回転釜3の剣先5とに適宜 の間隙を形成するように回転釜3を縫い針Nに接近させると、縫い針Nを間にし て回転釜3と反対側に設けられる糸ループ受け部材は逆に縫い針Nから離れてし まう。 However, the above-mentioned conventional sewing machine has the following problems. That is, when the sewing needle N is exchanged according to various sewing objects W and the positions of the sword tip 5 and the sewing needle N of the rotary hook 3 are adjusted according to the thickness of the sewing needle N, the rotary hook 3 Since the position of the yarn loop receiving member installed at the position also changes, the yarn loop receiving member may not be able to perform a predetermined operation depending on the setting position of the rotary hook 3. That is, when the thin sewing needle N is used, when the rotary hook 3 is brought close to the sewing needle N so as to form an appropriate gap between the sewing needle N and the sword tip 5 of the rotary hook 3, the needle N is put in between. On the contrary, the thread loop receiving member provided on the opposite side of the rotary hook 3 is separated from the sewing needle N.
【0007】 そして、縫い針Nから離れ過ぎた糸ループ受け部材は、縫い針Nが形成した糸 ループ1aを回転釜3が適正に捕捉可能な位置まで導くことができなくなってし まう。 このようにして、回転釜3は糸ループ1aを捕捉しない状態で回転し、縫い目 が形成されない、いわゆる目飛びを発生する。Then, the thread loop receiving member which is too far from the sewing needle N cannot guide the thread loop 1a formed by the sewing needle N to a position where the rotary hook 3 can be properly captured. In this way, the rotary hook 3 rotates without catching the thread loop 1a, and so-called stitch skipping occurs in which no stitch is formed.
【0008】 そこで、この対策として図9に示すように針板A2の針穴2の裏面部へ、一方 に膨み4aを設けたパイプ4を装設し、膨み4aによって糸ループ1aを回転釜 3の剣先方向にのみ突出させるようにしたものがある。 従って、針穴2およびパイプ4の図中左側壁は略直線状に下方に延出している ため、例えば太い縫い針を使用した場合には縫い針Nの昇降経路を間にして縫い 針Nの保持する縫い糸1と接するパイプ4の左側壁は縫い針Nの昇降を妨げるこ とがないように、昇降する縫い針Nとに適正な空隙が形成される。 そのことにより縫い糸1の撓みを針穴Naから膨み4aに押し出して、糸ルー プ1aを回転釜3の剣先方向にのみ突出するように形成する。Therefore, as a countermeasure against this, as shown in FIG. 9, a pipe 4 having a bulge 4a on one side is provided on the back surface of the needle hole 2 of the needle plate A2, and the yarn loop 1a is rotated by the bulge 4a. There is one in which the hook 3 is made to project only toward the tip of the sword. Therefore, since the left side walls of the needle hole 2 and the pipe 4 in the figure extend downward in a substantially straight line, for example, when a thick sewing needle is used, the sewing needle N is placed with the elevating path of the sewing needle N in between. The left side wall of the pipe 4 which is in contact with the sewing thread 1 to be held has an appropriate gap formed with the ascending and descending sewing needle N so as not to hinder the ascending and descending of the sewing needle N. As a result, the bending of the sewing thread 1 is pushed out from the needle hole Na to the bulge 4a, and the thread loop 1a is formed so as to project only toward the sword tip of the rotary hook 3.
【0009】 とことが細い縫い針Nを使用した場合には前記パイプ4の左側壁と昇降する縫 い針Nとの空隙が大きくなり、そのため縫い糸1の撓みを針穴Naから膨み4a に押し出す量が不十分となる。 また、パイプ4の右側壁も針穴2と直線状に下方に延出しているので、糸ルー プ1aの大きさは膨み4aの大きさにかかわらずこのパイプ4の直線部分によっ て制限されて不十分となる。 依って、そのため回転釜3の剣先が糸ループ1aを捕捉しない状態で回転し、 縫い目が形成されない、いわゆる目飛びを発生する可能性がある。When a thin sewing needle N is used, the gap between the left side wall of the pipe 4 and the ascending / descending sewing needle N becomes large, so that the bending of the sewing thread 1 is expanded from the needle hole Na to the bulge 4a. The amount of extrusion is insufficient. Further, since the right side wall of the pipe 4 also extends downward in a straight line with the needle hole 2, the size of the thread loop 1a is limited by the straight portion of the pipe 4 regardless of the size of the bulge 4a. And it becomes insufficient. Therefore, there is a possibility that the tip of the rotary hook 3 of the rotary hook 3 rotates without catching the thread loop 1a, and a so-called stitch skip, in which no stitch is formed, is generated.
【0010】[0010]
この考案に係るミシンの針穴装置は、縫い針の昇降経路の中心より回転釜の剣 先側に偏奇した針穴を含む円形穴と、縫い針の昇降経路を間にして回転釜の剣先 とは反対側の円形穴内側面に縫い針が保持する縫い糸と接する当接部と、を備え て形成し、この当接部と縫い糸とを接触させることにより、糸ループを回転釜の 剣先寄りに形成するようにして、上記従来の課題を解決しようとするものである 。 The needle hole device of the sewing machine according to the present invention is a circular hole including a needle hole that is eccentric to the sword tip side of the rotary hook from the center of the raising and lowering path of the sewing needle, and the tip of the rotary hook with the raising and lowering path of the sewing needle in between. Is formed with an abutting portion that contacts the sewing thread held by the sewing needle on the inner surface of the circular hole on the opposite side, and the thread loop is formed near the sword tip of the rotary hook by bringing the abutting portion into contact with the sewing thread. Thus, the above-mentioned conventional problems are to be solved.
【0011】[0011]
この考案に係るミシンの針穴装置は、縫い針の昇降経路の中心より回転釜の剣 先側に偏奇した針穴を含む円形穴を設け、縫い針の昇降経路を間にして回転釜の 剣先とは反対側の円形穴内側面に形成される当接部を、縫い針の針穴から両側に 折り返される一方側の縫い糸、すなわち縫い針を間にして回転釜の剣先とは反対 側に折り返される縫い糸に接触させる。 The needle hole device of the sewing machine according to the present invention is provided with a circular hole including an eccentric needle hole on the sword tip side of the rotary hook with respect to the center of the ascending / descending path of the sewing needle, and the sword tip of the rotary hook with the ascending / descending path of the sewing needle in between. The contact part formed on the inner side of the circular hole on the opposite side is folded back to both sides from the needle hole of the sewing needle, and is folded back to the side opposite to the tip of the rotary hook with the sewing thread on one side, that is, the sewing needle in between. Touch the sewing thread.
【0012】 そして、縫い針の上昇時において、縫い針を間に回転釜の剣先とは反対側に生 じる縫い糸の撓みを、この当接部により縫い針の針穴から回転釜の剣先方向に押 し出し、糸ループを回転釜の剣先方向にのみ大きく突出させる。 これにより、回転釜の剣先は形状の大きな糸ループを確実に捕捉することがで き、目飛びのない適正な縫い目を形成することができる。Then, when the sewing needle is raised, the bending of the sewing thread generated on the side opposite to the tip of the rotary hook between the sewing needles is caused by the contact portion from the needle hole of the sewing needle toward the blade tip of the rotary hook. Push it out to make the thread loop largely project only toward the blade point of the rotary hook. As a result, the sword tip of the rotary hook can reliably catch a large thread loop and can form an appropriate stitch without skipping.
【0013】[0013]
図面にもとづいてこの考案の実施例を説明する。なお従来例と同一または相当 箇所には同一符号を付して説明する。 図1および図2は、この考案の一実施例を示す図である。 図1においてAはミシンの針穴装置であり、このミシンの針穴装置Aは、縫い 針Nを挿通する針貫通穴Bを備えた針ガイド部材A1と、この針ガイド部材A1 を着脱自在に支持する針板A2とからなっていて、被縫製物Wと回転釜3との間 に設置されている。 An embodiment of the present invention will be described with reference to the drawings. It should be noted that the same or corresponding portions as those of the conventional example will be described by attaching the same reference numerals. 1 and 2 are views showing an embodiment of the present invention. In FIG. 1, A is a needle hole device of a sewing machine, and the needle hole device A of this sewing machine has a needle guide member A1 having a needle through hole B through which a sewing needle N is inserted, and the needle guide member A1 is detachable. It is composed of a supporting needle plate A2 and is installed between the workpiece W and the rotary hook 3.
【0014】 そして、針ガイド部材A1の針貫通穴Bは、針穴を含む円形穴により形成する とともに、その中心位置B1を縫い針Nの昇降経路N1から回転釜3の剣先寄り に偏奇させて、昇降経路N1を間にして回転釜3の剣先とは反対側の内側面で縫 い針Nの保持する縫い糸1と接する当接部Cを構成している。 また、この当接部Cは縫い針Nの昇降を妨げることがないように、昇降する縫 い針Nとに僅かな空隙を形成するようになっている。The needle through hole B of the needle guide member A1 is formed by a circular hole including the needle hole, and the center position B1 of the needle guide member A1 is biased from the ascending / descending path N1 of the sewing needle N toward the sword tip of the rotary hook 3. A contact portion C that contacts the sewing thread 1 held by the sewing needle N is formed on the inner surface of the rotary hook 3 opposite to the tip of the sword with the lifting path N1 in between. Further, the contact portion C forms a slight gap with the ascending / descending sewing needle N so as not to hinder the ascending / descending of the sewing needle N.
【0015】 次にこのミシンの針穴装置Aの作用を図2により説明する。 図2(a)に示すように縫い針Nが被縫製物Wを貫きミシンの針穴装置Aの針 貫通穴Bを通ると、中心を回転釜3寄りに偏奇させて縫い針Nの昇降経路N1を 間にして回転釜3とは反対側の内側面から構成される当接部Cは、縫い針Nの針 穴Naから縫い針Nの両側部に折り返される縫い糸1の一方側、すなわち縫い針 Nを介して回転釜3と反対側(図において左側)の縫い糸1に接触する。Next, the operation of the needle hole device A of this sewing machine will be described with reference to FIG. As shown in FIG. 2A, when the sewing needle N penetrates the workpiece W and passes through the needle through hole B of the needle hole device A of the sewing machine, the center of the sewing needle N is biased toward the rotary hook 3 and the ascent / descent path of the sewing needle N. The abutting portion C formed by the inner surface on the side opposite to the rotary hook 3 with N1 interposed therebetween is one side of the sewing thread 1 that is folded back from the needle hole Na of the sewing needle N to both sides of the sewing needle N, that is, the sewing thread. The sewing thread 1 on the side opposite to the rotary hook 3 (left side in the figure) is contacted via the needle N.
【0016】 そして、縫い針Nが上昇する際、縫い糸1は、図8に示すように針穴Naを中 心にして両側にそれぞれ同形状のループを形成するように撓もうとするが、この 縫い糸1の一方側(図において左側)に接する当接部Cは、図2(b)に示すよ うに縫い針Nの上昇とともに生じる縫い糸の撓みを針穴Naから他方側(図にお いて右側)に押し出して、糸ループ1aを回転釜3方向にのみ大きく突出するよ うに形成する。 すなわち、当接部Cと接触する縫い糸1は、縫い針Nと当接部Cとの間に挟ま れた状態となり、縫い針Nが上昇しても撓み(ループ)を形成することができず 縫い針Nに沿って直線状となり、この縫い糸1の撓み分は縫い針Nが上昇するに したがい、針穴Naから回転釜3の剣先方向に繰り出される。 この際、偏奇した針貫通穴B(針穴を含む円形溝)において、縫い針Nの右側 には大きな空隙が存在するので、糸ループ1aはこの空隙により撓み制限を受け ることなく回転釜3の剣先方向に繰り出される。Then, when the sewing needle N rises, the sewing thread 1 tries to bend so as to form loops of the same shape on both sides with the needle hole Na as the center, as shown in FIG. The abutment portion C that contacts one side (left side in the figure) of the sewing thread 1 causes the bending of the sewing thread, which occurs as the sewing needle N rises, from the needle hole Na to the other side (right side in the figure) as shown in FIG. 2 (b). ), The thread loop 1a is formed so as to largely project only in the rotary hook 3 direction. That is, the sewing thread 1 that comes into contact with the contact portion C is sandwiched between the sewing needle N and the contact portion C, and even if the sewing needle N rises, it cannot form a bend (loop). It becomes linear along the sewing needle N, and the bending amount of the sewing thread 1 is fed out from the needle hole Na toward the blade point of the rotary hook 3 as the sewing needle N rises. At this time, in the eccentric needle through hole B (circular groove including the needle hole), since there is a large gap on the right side of the sewing needle N, the thread loop 1a is not restricted by the deflection due to this gap and the rotary hook 3 It is extended toward the sword tip.
【0017】 そして、回転釜3の剣先側にのみ糸ループ1aが形成され、この糸ループ1a は従来回転釜3の剣先側に形成される糸ループ1aのほぼ2倍の大きさとなる。 これにより、回転釜3の剣先は、大きく突出した糸ループ1aを確実に捕捉す ることができ、目飛びのない適正な縫い目を形成することが可能となる。 なお、被縫製物Wに応じて縫い針Nを交換した場合には、その縫い針Nの太さ に応じた針貫通穴B、当接部Cを備えた針ガイド部材A1に交換すれば上述同様 糸ループ1aを回転釜3の剣先が十分に捕捉可能な位置まで導くことができる。The thread loop 1a is formed only on the sword tip side of the rotary hook 3, and this thread loop 1a is approximately twice as large as the thread loop 1a formed on the sword tip side of the conventional rotary hook 3. As a result, the sword tip of the rotary hook 3 can reliably catch the thread loop 1a that is largely projected, and it is possible to form an appropriate stitch without skipping. When the sewing needle N is replaced according to the material to be sewn W, if the needle guide member A1 having the needle through hole B and the contact portion C corresponding to the thickness of the sewing needle N is replaced, Similarly, the thread loop 1a can be guided to a position where the blade tip of the rotary hook 3 can be sufficiently captured.
【0018】 一方、図3ないし図4は、この考案の他の実施例を示す図である。 この実施例の針穴装置Aは、図3および図4に示すように被縫製物側の開口部 を縫い針Nの昇降経路N1を中心とする大径円形穴B2と、この大径円形穴B2 の下部側方に縫い針Nの昇降経路N1の中心より回転釜3の剣先側に偏奇した針 穴を含む小径円形穴B3と、縫い針Nの昇降経路N1を間にして回転釜3の剣先 とは反対側の前記小径円形穴B3の内側面に、縫い針Nが保持する縫い糸と接す る当接部Cとを設けている。この当接部Cは縫い針Nの昇降を妨げることがない よう、昇降する縫い針Nとの間に僅かな空隙を形成するようになっている。Meanwhile, FIGS. 3 to 4 are views showing another embodiment of the present invention. As shown in FIGS. 3 and 4, the needle hole device A of this embodiment has a large-diameter circular hole B2 centered on the elevating path N1 of the sewing needle N at the opening on the side of the workpiece, and the large-diameter circular hole. A small diameter circular hole B3 including a needle hole that is biased to the sword tip side of the rotary hook 3 from the center of the vertical movement path N1 of the sewing needle N to the lower side of B2 and the vertical movement path N1 of the sewing needle N On the inner side surface of the small-diameter circular hole B3 on the side opposite to the tip of the sword, there is provided an abutting portion C which comes into contact with the sewing thread held by the sewing needle N. The abutting portion C forms a slight gap with the ascending and descending sewing needle N so as not to prevent the ascending and descending of the sewing needle N.
【0019】 以上の構成からなるミシンの針穴装置Aは、上述したこの考案の上記一実施例 (図2(a)および(b)参照)と同様に、当接部Cと縫い糸1とを接触させて 、糸ループ1aを回転釜3の剣先寄りに大きく形成し、回転釜3の剣先に確実に 糸ループ1aを捕捉させるこで適正な縫い目の形成を可能にする。In the needle hole device A of the sewing machine having the above-mentioned configuration, the contact portion C and the sewing thread 1 are provided in the same manner as the above-described one embodiment of the present invention (see FIGS. 2A and 2B). The thread loop 1a is formed in large contact with the rotary hook 3 toward the tip of the rotary hook 3, and the thread loop 1a is reliably caught by the tip of the rotary hook 3 to enable proper seam formation.
【0020】 また、このミシンの針穴装置Aにおいては、縫い針Nの昇降経路N1と、被縫 製物W側の開口部(大径円形穴B2)の中心位置が一致するよう設定されている ので、模様縫いミシン等において被縫製物Wがいかなる方向に送られても、図4 (a)に示すように縫い針Nの昇降経路N1から針貫通穴B(円形溝B2)の縁 部までの距離a及びbが等しく、縫い糸1とミシンの針穴装置Aの縁部との摩擦 抵抗が一定しているので、ミシンの天秤による糸締めが均一に行え、適正な模様 縫い目が形成される。Further, in the needle hole device A of this sewing machine, the vertical path N1 of the sewing needle N and the center position of the opening (large diameter circular hole B2) on the side of the workpiece W are set to coincide with each other. As shown in FIG. 4A, the edge of the needle through hole B (circular groove B2) from the ascending / descending path N1 of the sewing needle N is irrespective of the direction in which the workpiece W is fed in the pattern sewing machine or the like. Since the distances a and b are equal to each other and the frictional resistance between the sewing thread 1 and the edge portion of the needle hole device A of the sewing machine is constant, the thread can be tightened uniformly by the balance of the sewing machine and a proper pattern stitch is formed. It
【0021】 なお、図1および図3に示したミシンの針穴装置Aは、一つまたは二つの円形 穴を形成することで当接部Cを構成したが、例えば図5(a)に示すように回転 釜方向に向けて突出するように傾斜する傾斜部により当接部Cを形成しても良く 、また同図(b)に示すようにミシンの針穴装置の下方に回転釜方向に向けて突 出する突出部材を固定して当接部Cを形成しても同様の効果を得ることができる 。さらに、上記実施例および他の実施例で述べた針ガイド部材A1は、ピン等の 位置決め部材等を介して針板A2に装着されているが、勿論針ガイド部材A1を 針板A2に一体に構成しても良い。In the needle hole device A of the sewing machine shown in FIGS. 1 and 3, the contact portion C is formed by forming one or two circular holes. For example, as shown in FIG. The contact portion C may be formed by an inclined portion that is inclined so as to project toward the rotary hook as described above, and as shown in FIG. 7B, the contact portion C may be formed below the needle hole device of the sewing machine in the rotary hook direction. The same effect can be obtained by fixing the protruding member protruding toward the contact portion C to form the contact portion C. Further, the needle guide member A1 described in the above embodiments and other embodiments is attached to the needle plate A2 via a positioning member such as a pin, but of course the needle guide member A1 is integrated with the needle plate A2. It may be configured.
【0022】[0022]
この考案に係るミシンの針穴装置は、以上説明したように、縫い針を挿通する 針貫通穴を、縫い針の昇降経路の中心より回転釜の剣先側に偏奇した針穴を含む 円形穴と、縫い針の昇降経路を間にして回転釜とは反対側の円形穴内側面に縫い 針が保持する縫い糸と接する当接部と、を備えて構成し、この当接部と縫い糸と を接触させること及び針穴を含む円形穴を縫い針の昇降経路の中心より偏奇した ことにより、糸ループを回転釜寄りに大きく形成するようにしたので、回転釜の 剣先に確実に糸ループを捕捉させることができ、目飛びのない適正な縫い目が可 能となる。 As described above, the needle hole device of the sewing machine according to the present invention has a needle through hole through which a sewing needle is inserted and a circular hole including a needle hole which is biased from the center of the ascending / descending path of the sewing needle to the sword tip side of the rotary hook. , A contact portion that contacts the sewing thread held by the sewing needle on the inner surface of the circular hole on the side opposite to the rotary hook with the ascending / descending path of the sewing needle in between, and the contact portion and the sewing thread are brought into contact with each other. By eccentricity of the circular hole including the needle hole from the center of the ascending / descending path of the sewing needle, the thread loop is made larger toward the rotary hook, so that the thread loop can be reliably caught by the blade point of the rotary hook. This allows for proper seams without skipping.
【図1】この考案に係るミシンの針穴装置の一実施例を
示す断面図である。FIG. 1 is a sectional view showing an embodiment of a needle hole device of a sewing machine according to the present invention.
【図2】図1に示したミシンの針穴装置の作用を示す図
で、同図(a)は縫い針の下降時、同図(b)は縫い針
の上昇時における糸ループ形成時を示す説明側面図であ
る。2A and 2B are views showing the operation of the needle hole device of the sewing machine shown in FIG. 1, in which FIG. 2A shows a lowering of a sewing needle, and FIG. 2B shows a forming of a thread loop when the sewing needle is raised. It is an explanatory side view shown.
【図3】縫い針の昇降経路を中心とする円形状の開口部
を有する針貫通穴を備えたミシンの針穴装置の他の実施
例を示す説明断面図である。FIG. 3 is an explanatory cross-sectional view showing another embodiment of a needle hole device of a sewing machine having a needle through hole having a circular opening centered on a lifting path of a sewing needle.
【図4】図3に示したミシンの針穴装置の針貫通穴を示
し、(a)は平面図、(b)は説明斜視図である。4A and 4B show a needle through hole of the needle hole device of the sewing machine shown in FIG. 3, in which FIG. 4A is a plan view and FIG. 4B is an explanatory perspective view.
【図5】ミシンの針穴装置の他の実施例を示す図で、同
図(a)は当接部を傾斜する突出部により形成したミシ
ンの針穴装置を示す断面図、同図(b)は当接部を突出
部材を固定することで形成したミシンの針穴装置を示す
断面図である。5A and 5B are views showing another embodiment of the needle hole device of the sewing machine, wherein FIG. 5A is a cross-sectional view showing the needle hole device of the sewing machine in which the abutting portion is formed by a slanting protrusion, and FIG. FIG. 8A is a cross-sectional view showing a needle hole device of a sewing machine formed by fixing a protruding member to an abutting portion.
【図6】従来のミシンの針穴装置を示す説明側面図であ
る。FIG. 6 is an explanatory side view showing a needle hole device of a conventional sewing machine.
【図7】図6に示したミシンの針穴装置を備えたミシン
における縫い針の下降時を示す説明側面図である。FIG. 7 is an explanatory side view showing the time when the sewing needle is descending in the sewing machine including the needle hole device for the sewing machine shown in FIG.
【図8】図6に示したミシンの針穴装置を備えたミシン
における縫い針の上昇時を示す説明側面図である。FIG. 8 is an explanatory side view showing the time when the sewing needle is raised in the sewing machine including the needle hole device for the sewing machine shown in FIG. 6;
【図9】従来のミシンの針穴装置を備えたミシンを示す
他例の側面図である。FIG. 9 is a side view of another example of a sewing machine including a conventional needle hole device for a sewing machine.
1 縫い糸 1a 糸ループ 3 回転釜 A ミシンの針穴装置 B 針貫通穴 C 当接部 N 縫い針 W 被縫製物 1 Sewing thread 1a Thread loop 3 Rotating hook A Sewing machine needle hole device B Needle through hole C Abutment part N Sewing needle W Sewing object
Claims (1)
製物と回転釜との間に設置され、縫い針により形成され
る糸ループを回転釜の剣先が捕捉する位置に設定するミ
シンの針穴装置であって、 このミシンの針穴装置の前記針貫通穴を、 縫い針の昇降経路の中心より回転釜の剣先側に偏奇した
針穴を含む円形穴と、 縫い針の昇降経路を間にして回転釜の剣先とは反対側の
円形穴内側面に、縫い針が保持する縫い糸と接する当接
部と、を備えて形成し、 この当接部と縫い糸とを接触させることにより、糸ルー
プを回転釜の剣先寄りに形成するようにしたことを特徴
とするミシンの針穴装置。1. A sewing machine which is provided between a workpiece and a rotary hook with a needle through hole for inserting a sewing needle and sets a thread loop formed by the sewing needle at a position where a sword tip of the rotary hook captures the thread loop. A needle hole device of this sewing machine, wherein the needle through hole of the needle hole device of this sewing machine has a circular hole including a needle hole that is eccentric to the sword tip side of the rotary hook from the center of the lifting path of the sewing needle, and the lifting path of the sewing needle By forming an abutting portion in contact with the sewing thread held by the sewing needle on the inner surface of the circular hole on the side opposite to the blade point of the rotary hook, and by bringing the abutting portion and the sewing thread into contact with each other, A needle hole device for a sewing machine, wherein a thread loop is formed near the sword tip of a rotary hook.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP1993053229U JP2592494Y2 (en) | 1993-09-30 | 1993-09-30 | Sewing machine needle hole device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1993053229U JP2592494Y2 (en) | 1993-09-30 | 1993-09-30 | Sewing machine needle hole device |
Publications (2)
Publication Number | Publication Date |
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JPH0724278U true JPH0724278U (en) | 1995-05-09 |
JP2592494Y2 JP2592494Y2 (en) | 1999-03-24 |
Family
ID=12936997
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JP1993053229U Expired - Fee Related JP2592494Y2 (en) | 1993-09-30 | 1993-09-30 | Sewing machine needle hole device |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101010828B1 (en) * | 2007-08-30 | 2011-01-25 | 브라더 고오교오 가부시키가이샤 | Sewing machine |
JP2016123781A (en) * | 2015-01-07 | 2016-07-11 | 極東産機株式会社 | Sewing needle guide mechanism of tatami sewing apparatus and tatami sewing apparatus including sewing needle guide mechanism |
-
1993
- 1993-09-30 JP JP1993053229U patent/JP2592494Y2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101010828B1 (en) * | 2007-08-30 | 2011-01-25 | 브라더 고오교오 가부시키가이샤 | Sewing machine |
JP2016123781A (en) * | 2015-01-07 | 2016-07-11 | 極東産機株式会社 | Sewing needle guide mechanism of tatami sewing apparatus and tatami sewing apparatus including sewing needle guide mechanism |
Also Published As
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JP2592494Y2 (en) | 1999-03-24 |
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