JP2008043549A - Full rotary hook - Google Patents

Full rotary hook Download PDF

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Publication number
JP2008043549A
JP2008043549A JP2006222430A JP2006222430A JP2008043549A JP 2008043549 A JP2008043549 A JP 2008043549A JP 2006222430 A JP2006222430 A JP 2006222430A JP 2006222430 A JP2006222430 A JP 2006222430A JP 2008043549 A JP2008043549 A JP 2008043549A
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Japan
Prior art keywords
needle
receiving plate
hook
sewing
needle receiving
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JP2006222430A
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JP5048287B2 (en
Inventor
Jun Hatanaka
潤 畑中
Motonari Nakano
元就 中野
Norikazu Hayakawa
範一 早川
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Brother Industries Ltd
Hirose Manufacturing Co Ltd
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Brother Industries Ltd
Hirose Manufacturing Co Ltd
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Priority to JP2006222430A priority Critical patent/JP5048287B2/en
Priority to CN2007101419559A priority patent/CN101130920B/en
Priority to EP07015968.6A priority patent/EP1889957B1/en
Priority to KR1020070082262A priority patent/KR100937055B1/en
Publication of JP2008043549A publication Critical patent/JP2008043549A/en
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Publication of JP5048287B2 publication Critical patent/JP5048287B2/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/26—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B55/00—Needle holders; Needle bars
    • D05B55/06—Needle guides; Needle protectors
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B57/00—Loop takers, e.g. loopers
    • D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
    • D05B57/10—Shuttles
    • D05B57/14—Shuttles with rotary hooks

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To easily adjust the clearance between a sewing needle and a hook if the thickness of the sewing needle to be used is changed, and to simplify the clearance adjusting mechanism. <P>SOLUTION: A needle receiving plate 20 is attached to a coupling member 5 by a fixing screw 23 in such a way that the position can be adjusted forward/backward via a slender slot 20b in the front/rear direction formed on a fixing part 20a integrally formed with the needle receiving plate 20. The needle receiving plate 20 is inserted into a notched hole 13a formed on a loop pressor plate 13 from behind and is located in a needle advancing clearance S. The position of the needle receiving plate 20 can be adjusted through the slot 20b according to the diameter of the sewing needle 3 for sewing by loosening the fixing screw 23. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、縫針の上下動に調時して回転駆動される全回転釜の外釜に針受け板を設け、この針受け板で剣先と縫針の隙間を調節できるようにした全回転釜に関する。   The present invention relates to a full rotary hook provided with a needle receiving plate on an outer hook of a full rotary hook that is driven to rotate in synchronization with the vertical movement of the sewing needle, and the clearance between the sword tip and the sewing needle can be adjusted by this needle receiving plate. .

従来、高速千鳥縫い用の垂直全回転釜をミシンベッド部に装備したミシンが実用化されている。この垂直全回転釜は、水平な回転軸回りに回転可能に設けられる外釜と、この外釜に回転可能に支持された中釜と、この中釜に装着されるボビンケースとを含むものである。   Conventionally, a sewing machine equipped with a vertical full rotary hook for high-speed zigzag stitching on the sewing machine bed has been put into practical use. The vertical full rotary hook includes an outer hook provided rotatably around a horizontal rotation shaft, an inner hook rotatably supported on the outer hook, and a bobbin case attached to the inner hook.

例えば、特許文献１に記載のミシンの全回転釜における針受け機構は、ほぼ半円形の針受け板（ループ押え板）を外釜の裏側から螺子止めし、この針受け板の一部を側面視Ｌ字状に切り起こして曲げ形成し、針溝と固定針受けを形成してある。更に、この針受け板に弾性材からなる円弧状の調節針受けを螺子により固定してある。そこで、細い縫針を使用する場合には、調節螺子を締め込むことで、調節針受けと固定針受けとの間隔を狭くして、縫針を剣先に近づけることができ、太い縫針を使用する場合には、調節螺子を緩めることで、調節針受けと固定針受けとの間隔を広くして、縫針を剣先から遠ざけることができるようになっている。
実公昭５７−１３０１７号公報（第１〜２頁、図２，図３） For example, the needle receiving mechanism in the full rotary hook of the sewing machine described in Patent Document 1 is a substantially semicircular needle receiving plate (loop presser plate) screwed from the back side of the outer hook, and a part of the needle receiving plate is disposed on the side surface. It is cut and raised in an L shape as viewed and bent to form a needle groove and a fixed needle receiver. Furthermore, an arc-shaped adjusting needle holder made of an elastic material is fixed to the needle receiving plate with a screw. Therefore, when using a thin sewing needle, the distance between the adjustment needle holder and the fixed needle holder can be narrowed by tightening the adjusting screw to bring the sewing needle closer to the tip of the sword. By loosening the adjustment screw, the interval between the adjustment needle holder and the fixed needle holder is widened so that the sewing needle can be moved away from the sword tip.
Japanese Utility Model Publication No. 57-13017 (pages 1 and 2, FIGS. 2 and 3)

特許文献１に記載のミシンの全回転釜における針受け機構においては、使用する縫針の太さに応じて、調節螺子を手動操作で、適宜締め込んだり緩めるようにしてあるため、調節螺子を締め込み過ぎるような場合、調節針受けと固定針受けとの間隔が非常に狭くなり、下降する縫針と回動する剣先とが干渉し、縫針が曲がったり、或いは折損するという問題がある。   In the needle receiving mechanism in the full rotary hook of the sewing machine described in Patent Document 1, the adjusting screw is manually tightened or loosened appropriately according to the thickness of the sewing needle to be used. In the case of excessive insertion, the distance between the adjustment needle holder and the fixed needle holder becomes very narrow, and there is a problem that the lowering needle and the rotating sword tip interfere with each other, and the sewing needle is bent or broken.

一般に、全回転釜の釜軸と下軸とは、全回転釜の直ぐ後側に配設されたカップリング部材で連結されており、針受け板を外釜の裏側から螺子止めし、この針受け板の裏側、つまりカップリング部材側に調節螺子が取付けてあるので、このカップリング部材に邪魔されて、調節螺子の調節作業が非常にしずらいという問題がある。   Generally, the hook shaft and the lower shaft of the full rotary hook are connected by a coupling member disposed immediately behind the full rotary hook, and the needle receiving plate is screwed from the back side of the outer hook to Since the adjustment screw is attached to the back side of the backing plate, that is, the coupling member side, there is a problem that the adjustment work of the adjustment screw is very difficult due to the interference of the coupling member.

本発明の目的は、使用する縫針の太さが変更された場合、縫針と剣先との隙間を簡単に調節できるようにし、しかもこの隙間調節機構を簡単化することである。   An object of the present invention is to make it possible to easily adjust a gap between a sewing needle and a sword tip when the thickness of a sewing needle to be used is changed, and to simplify the gap adjusting mechanism.

請求項１の全回転釜は、ミシンの針板の下側で縫針の上下動と調時して下軸と一体回転する剣先を有する外釜と、この外釜に回転可能に支持された中釜とを有する全回転釜において、全回転釜とは別体に形成され、剣先が縫針に出会う直前の所定期間に縫針をガイドして縫針と剣先との隙間を調節可能な針受け板と、針受け板を下軸の軸心方向に位置調節可能に外釜又はこの外釜と一体回転する部材に取付ける位置調節固定手段とを備えたものである。   The full rotary hook of claim 1 has an outer hook having a sword tip that rotates in unison with the lower shaft in synchronization with the vertical movement of the sewing needle below the needle plate of the sewing machine, and a rotary hook that is rotatably supported by the outer hook. In a full rotary hook having a hook, a needle receiving plate that is formed separately from the full rotary hook and that can adjust the gap between the needle and the sword tip by guiding the needle during a predetermined period immediately before the sword tip meets the needle. Position adjustment fixing means for attaching the needle receiving plate to the outer hook or a member that rotates integrally with the outer hook so that the position of the needle receiving plate can be adjusted in the axial direction of the lower shaft.

針受け板は全回転釜とは別体に形成され、位置調節固定手段により、下軸の軸心方向に位置調節可能に外釜又はこの外釜と一体回転する部材に取付けられているので、作業者が縫製に際して、太さが異なる縫針に変更した場合には、作業者は針受け板を位置調節固定手段を介して下軸の軸心方向に位置調節することにより、剣先が縫針に出会う直前の所定期間に縫針をガイド可能に、縫針と剣先との隙間が調節される。   The needle receiving plate is formed separately from the full rotary hook, and is attached to the outer hook or a member that rotates integrally with the outer hook so that the position can be adjusted by the position adjustment fixing means in the axial direction of the lower shaft. When the operator changes to a sewing needle with a different thickness during sewing, the operator adjusts the position of the needle receiving plate in the axial direction of the lower shaft via the position adjustment fixing means, so that the sword tip meets the sewing needle. The clearance between the sewing needle and the sword tip is adjusted so that the sewing needle can be guided in a predetermined period immediately before.

請求項２の全回転釜は、請求項１において、位置調節固定手段は、針受け板に形成され且つ下軸の軸心方向に細長い長穴を有し、針受け板を、長穴とこの長穴に挿通させた螺子を介して、下軸と外釜とを連結するカップリング部材に位置調節可能に固定するように構成されたものである。   According to a second aspect of the present invention, in the first rotary hook according to the first aspect, the position adjusting and fixing means is formed in the needle receiving plate and has an elongated hole extending in the axial direction of the lower shaft. It is configured to be fixed to a coupling member that connects the lower shaft and the outer hook through a screw inserted through the elongated hole so that the position can be adjusted.

請求項３の全回転釜は、請求項１又は２において、前記針受け板の外周面は、この針受け板により縫針の先端部をガイドする為に、外釜の回転により剣先が縫針に接近する程、縫針の上昇に応じて針受け板の半径が拡大する形状に形成されたものである。   According to a third aspect of the present invention, in the full rotary hook according to the first or second aspect, the outer peripheral surface of the needle receiving plate guides the tip of the sewing needle by the needle receiving plate, so that the sword tip approaches the sewing needle by the rotation of the outer hook. As the sewing needle is raised, the radius of the needle receiving plate increases as the sewing needle rises.

請求項１の発明によれば、ミシンの針板の下側で縫針の上下動と調時して下軸と一体回転する剣先を有する外釜と、この外釜に回転可能に支持された中釜とを有する全回転釜において、針受け板と、位置調節固定手段とを設けたので、作業者が縫製に際して、太さが異なる縫針に変更した場合には、作業者は針受け板を位置調節固定手段を介して下軸の軸心方向に位置調節することにより、剣先が縫針に出会う直前の所定期間に縫針をガイドして縫針と剣先との隙間を、針受け板により容易に調節することができる。   According to the first aspect of the present invention, the outer hook having a sword tip that rotates in unison with the lower shaft in synchronization with the vertical movement of the sewing needle below the needle plate of the sewing machine, and the inner hook rotatably supported by the outer hook. In the full rotary hook having a hook, the needle receiving plate and the position adjustment fixing means are provided. Therefore, when the operator changes the sewing needle to a different thickness when sewing, the operator positions the needle receiving plate. By adjusting the position in the axial direction of the lower shaft via the adjustment fixing means, the sewing needle is guided for a predetermined period immediately before the sword tip meets the sewing needle, and the clearance between the sewing needle and the sword tip is easily adjusted by the needle support plate. be able to.

請求項２の発明によれば、前記位置調節固定手段は、針受け板に形成され且つ下軸の軸心方向に細長い長穴を有し、針受け板を、長穴とこの長穴に挿通させた螺子を介して、下軸と外釜とを連結するカップリング部材に位置調節可能に固定するように構成されたので、位置調節固定手段の構成を簡単化することができる。しかも、作業者は太さの異なる縫針を使用する場合、螺子を緩めるだけで、長穴を介して針受け板を長穴の方向である下軸の軸心方向に簡単に位置調節することができる。しかも、螺子はカップリング部材に螺着してあるため、螺子の締め付け作業や緩め作業の作業性を改善することができる。その他請求項１と同様の効果を奏する。   According to a second aspect of the present invention, the position adjusting and fixing means is formed in the needle receiving plate and has a long and narrow elongated hole in the axial direction of the lower shaft, and the needle receiving plate is inserted into the elongated hole and the elongated hole. Since it is configured to be fixed to the coupling member that connects the lower shaft and the outer hook via the screw that has been adjusted, the configuration of the position adjustment fixing means can be simplified. Moreover, when using sewing needles of different thicknesses, the operator can easily adjust the position of the needle receiving plate in the axial direction of the lower shaft, which is the direction of the long hole, by simply loosening the screw. it can. Moreover, since the screw is screwed to the coupling member, the workability of the screw tightening operation and the loosening operation can be improved. Other effects similar to those of the first aspect are obtained.

請求項３の発明によれば、前記針受け板の外周面は、この針受け板により縫針の先端部をガイドする為に、外釜の回転により剣先が縫針に接近する程、縫針の上昇に応じて針受け板の半径が拡大する形状に形成されたので、剣先が縫針と出会う直前の所定期間に亙って、縫針が上昇するのに応じて、縫針の先端部が針受け板でガイドされるため、縫針の目孔から延びる上糸が針受け板で邪魔されることなく、剣先に確実に引っ掛けられ、目飛びが生じることなく、綺麗な縫目が順々に形成される。その他請求項１又は２と同様の効果を奏する。   According to the invention of claim 3, the outer peripheral surface of the needle receiving plate is raised as the sword tip approaches the sewing needle by the rotation of the outer hook in order to guide the tip of the sewing needle by the needle receiving plate. Since the radius of the needle receiving plate is increased accordingly, the tip of the sewing needle is guided by the needle receiving plate as the sewing needle rises over a predetermined period immediately before the sword tip meets the sewing needle. Therefore, the upper thread extending from the eye hole of the sewing needle is securely hooked on the sword tip without being obstructed by the needle receiving plate, and beautiful stitches are formed in order without causing skipping. Other effects similar to those of the first or second aspect are achieved.

本実施例の全回転釜は、回転する外釜の剣先が上下駆動される縫針に出会う直前の所定期間に縫針をガイドして縫針と剣先との隙間を調整可能な針受け板を、下軸の軸心方向に位置調節可能にカップリング部材に取付けるようにしてある。   The full rotary hook of this embodiment has a needle receiving plate that can adjust the gap between the sewing needle and the sword tip by guiding the sewing needle for a predetermined period immediately before the rotating sword tip of the rotating outer hook meets the vertically driven sewing needle. Are attached to the coupling member such that the position thereof can be adjusted in the axial direction.

パターン縫いミシン（図示略）の針板１の下側に設けられた垂直全回転釜１０について説明する。
図１〜図３に示すように、垂直全回転釜１０は、高速千鳥縫い用の全回転釜であり、下軸４により回転可能に設けられる外釜１１と、外釜１１に回転可能に支持される中釜１２と、外釜１１の後側に一体的に設けられたループ押え板１３とを含んで構成される。 The vertical full rotary hook 10 provided on the lower side of the needle plate 1 of the pattern sewing machine (not shown) will be described.
As shown in FIGS. 1 to 3, the vertical full rotary hook 10 is a full rotary hook for high-speed zigzag stitching, and is rotatably supported by the outer hook 11 and an outer hook 11 that is rotatably provided by the lower shaft 4. The inner hook 12 and the loop presser plate 13 provided integrally on the rear side of the outer hook 11 are configured.

外釜１１は外釜本体１４と、この外釜本体１４に連なる釜軸１５とを有し、主軸（図示略）と同期して回転する下軸４からカップリング部材５を介して釜軸１５に回転力が伝達されることによって、縫針３の上下動に調時（同期）して釜軸１５の軸心回りに正面視にて時計回りに回転駆動される。ここで、外釜本体１４には、時計回りの回転方向に向けた剣先１１ａが形成されている。   The outer hook 11 includes an outer hook main body 14 and a hook shaft 15 connected to the outer hook main body 14, and the hook shaft 15 extends from the lower shaft 4 that rotates in synchronization with the main shaft (not shown) via the coupling member 5. When the rotational force is transmitted to the hook shaft 15, the sewing needle 3 is driven to rotate clockwise around the axis of the hook shaft 15 in front view in synchronism with the vertical movement of the sewing needle 3. Here, the outer hook main body 14 is formed with a sword tip 11a directed in the clockwise rotation direction.

中釜１２は中釜本体１７とスタッド１８とを有し、外釜本体１４に同軸に嵌まり込んで、相互に回転可能に支持される。スタッド１８は、ボビンケースに収容された下糸ボビン（図示略）を回転可能に支持するために、中釜本体１７の底部から中釜本体１７の開放端側に延びるように突出して設けられる。下軸４はブッシュ６によりベッドフレーム（図示略）に回転自在に支持されている。   The inner hook 12 includes an inner hook main body 17 and a stud 18, and is fitted coaxially into the outer hook main body 14 and is supported so as to be rotatable relative to each other. The stud 18 protrudes from the bottom of the inner hook body 17 so as to extend to the open end side of the inner hook body 17 in order to rotatably support a lower thread bobbin (not shown) accommodated in the bobbin case. The lower shaft 4 is rotatably supported by a bed frame (not shown) by a bush 6.

そこで、下軸４の回転による回転力が垂直全回転釜１０に伝達されると、外釜１１が縫針３の上下動に調時して、中釜１２とボビンケース（図示略）を回り止めした状態で、正面視にて時計回りに回転駆動される。外釜１１が回転されることによって、加工布を挿通した縫針３の目孔３ａから延びる上糸が剣先１１ａによって捕捉され、中釜１２の周囲を周回し、これによって縫針３の目孔３ａから延びる上糸と下糸ボビン（図示略）から延びる下糸とが交絡され、図示しない天秤によって上糸ループが引き締められることにより、縫目が形成される。   Therefore, when the rotational force due to the rotation of the lower shaft 4 is transmitted to the vertical full rotary hook 10, the outer hook 11 adjusts the vertical movement of the sewing needle 3, and prevents the inner hook 12 and the bobbin case (not shown) from rotating. In this state, it is rotated clockwise in front view. When the outer hook 11 is rotated, the upper thread extending from the eye hole 3a of the sewing needle 3 through which the work cloth has been inserted is captured by the sword tip 11a and circulates around the inner hook 12 and thereby from the eye hole 3a of the sewing needle 3. The upper thread that extends and the lower thread that extends from the bobbin (not shown) are entangled, and the upper thread loop is tightened by a balance (not shown) to form a seam.

ループ押え板１３は、図２に示すように、下軸４を囲むほぼ半円形の板部材であり、カップリング部材５側（後側）から固定螺子１９で外釜１１の後側に固定されている。但し、図１に示すように、縫針３が剣先１１ａと出会う手前の所定角度に亙って、外釜１１の後面とループ押え板１３との間に、縫針３の進入を可能にする針進入隙間Ｓが形成されている。このループ押え板１３には、図２に示すように、剣先１１ａが縫針３に出会う直前の外釜１１の回転位置（これを出会い直前位置という）において、縫針３の先端部に対向する所定幅の切欠き穴１３ａが形成されている。   As shown in FIG. 2, the loop presser plate 13 is a substantially semicircular plate member surrounding the lower shaft 4, and is fixed to the rear side of the outer hook 11 by a fixing screw 19 from the coupling member 5 side (rear side). ing. However, as shown in FIG. 1, the needle entry that allows the sewing needle 3 to enter between the rear surface of the outer hook 11 and the loop presser plate 13 over a predetermined angle before the sewing needle 3 meets the sword tip 11a. A gap S is formed. As shown in FIG. 2, the loop presser plate 13 has a predetermined width facing the tip of the sewing needle 3 at the rotational position of the outer hook 11 just before the sword tip 11 a meets the sewing needle 3 (this is called the position immediately before the encounter). The notch 13a is formed.

次に、外釜１１に設けられた針受け板２０について説明する。
針受け板２０は、図４に示すように、側面視にてクランク状であり、この右端部に前後方向向きの固定部２０ａの前端部が一体的に形成されている。針受け板２０の幅寸法はループ押え板１３の切欠き穴１３ａよりも若干狭くなっている。また、固定部２０ａには、図４に示すように、前後に細長い長穴２０ｂが形成されている。 Next, the needle receiving plate 20 provided in the outer hook 11 will be described.
As shown in FIG. 4, the needle receiving plate 20 has a crank shape in a side view, and a front end portion of a fixing portion 20 a facing in the front-rear direction is integrally formed at the right end portion. The width dimension of the needle receiving plate 20 is slightly narrower than the notch hole 13a of the loop presser plate 13. Further, as shown in FIG. 4, the fixing portion 20 a is formed with an elongated hole 20 b that is elongated in the front-rear direction.

この針受け板２０の外周上面は、図２，図４に示すように、縫針３の先端部（下端部）を、最下位置直前（図５参照）から最下位置（図２参照）を経て上昇開始直後に剣先１１ａと出会う直前（図６参照）の所定期間に亙って、針受け板２０により縫針３の先端部をガイドする為に、外釜１１の時計回りへの回転により剣先１１ａが縫針３に接近する程、縫針３の上昇に応じて針受け板２０の半径が拡大する形状に形成されている。更に、この針受け板２０は、下軸４の軸心と直交する平面に対して傾斜状に形成されている。   As shown in FIGS. 2 and 4, the upper surface of the outer periphery of the needle receiving plate 20 is arranged so that the tip end (lower end) of the sewing needle 3 extends from immediately before the lowest position (see FIG. 5) to the lowest position (see FIG. 2). After that, the blade tip is rotated by rotating the outer hook 11 clockwise in order to guide the tip of the sewing needle 3 by the needle receiving plate 20 over a predetermined period immediately after the start of the ascent and immediately before meeting the blade tip 11a (see FIG. 6). It is formed in a shape in which the radius of the needle receiving plate 20 increases as the sewing needle 3 rises as 11a approaches the sewing needle 3. Further, the needle receiving plate 20 is formed to be inclined with respect to a plane perpendicular to the axis of the lower shaft 4.

即ち、図３，図４に示すように、針受け板２０のリーディング側端部２０ｃ（右端部）は剣先１１ａよりも下軸４の軸心方向にて中釜１２側（前側）に位置し、針受け板２０のトレーリング側端部２０ｄ（左端部）は下軸４の軸心方向にて剣先１１ａとほぼ同じ位置に位置している。そして、針受け板２０のほぼ上半分は、図１，図２に示すように、ループ押え板１３の切欠き穴１３ａを後側から挿通して針進入隙間Ｓに位置している。   That is, as shown in FIGS. 3 and 4, the leading end 20c (right end) of the needle receiving plate 20 is positioned closer to the inner hook 12 (front side) in the axial direction of the lower shaft 4 than the sword tip 11a. The trailing side end 20d (left end) of the needle receiving plate 20 is located at substantially the same position as the sword tip 11a in the axial direction of the lower shaft 4. As shown in FIGS. 1 and 2, the substantially upper half of the needle receiving plate 20 is located in the needle entry gap S through the notch hole 13 a of the loop presser plate 13 from the rear side.

次に、針受け板２０を針進入隙間Ｓにおいて前後方向（下軸４軸心方向）に位置調節可能にカップリング部材５に取付ける位置調節固定機構２２（位置調節固定手段に相当する）について説明する。   Next, a position adjustment fixing mechanism 22 (corresponding to a position adjustment fixing means) for attaching the needle receiving plate 20 to the coupling member 5 so that the position of the needle receiving plate 20 in the needle entry gap S can be adjusted in the front-rear direction (the lower shaft 4 axis direction) is described. To do.

図２に示すように、外釜１１の出会い直前位置において、カップリング部材５の上端のやや右側よりの部位において、全長に亙って直角に切落とされた切落し部５ａが形成されている。そこで、針受け板２０の固定部２０ａがこの切落し部５ａの縦壁に沿って前後方向鉛直姿勢で配設され、針受け板２０はこの長穴２０ｂを挿通した固定螺子２３を切落し部５ａの縦壁に螺着することにより、カップリング部材５に前後方向位置調節可能に取付けられている。   As shown in FIG. 2, at the position just before the outer hook 11 meets, a cut-off portion 5 a cut off at right angles over the entire length is formed at a position slightly above the right side of the upper end of the coupling member 5. . Therefore, the fixing portion 20a of the needle receiving plate 20 is arranged in a vertical posture in the front-rear direction along the vertical wall of the cut-off portion 5a, and the needle receiving plate 20 has a cut-off portion of the fixing screw 23 inserted through the elongated hole 20b. By being screwed onto the vertical wall of 5a, it is attached to the coupling member 5 so that the position in the front-rear direction can be adjusted.

次に、このように構成された垂直全回転釜１０の作動について説明する。
作業者は縫製を開始する前準備として、縫製する加工布の厚さや種類に応じた太さを有する縫針３を針棒２に装着する。作業者は、次に、パターン縫いミシンのハンドプーリ（図示略）を手動操作して、縫針３が剣先１１ａと出会う直前（図６参照）まで縫針３を下方に移動させる。この状態で、作業者は、工具で固定螺子２３を緩め、縫針３と剣先１１ａとの隙間が所定隙間になるように、つまり使用する縫針３の太さに応じて、針受け板２０のトレーリング側端部２０ｄで縫針３の先端部を後方にガイドするようにして針受け板２０を位置調節してから、固定螺子２３を締め付ける。 Next, the operation of the vertical full rotary hook 10 configured as described above will be described.
As a preparation before starting sewing, an operator attaches a sewing needle 3 having a thickness corresponding to the thickness and type of the work cloth to be sewn to the needle bar 2. Next, the operator manually operates a hand pulley (not shown) of the pattern sewing machine and moves the sewing needle 3 downward until just before the sewing needle 3 meets the sword tip 11a (see FIG. 6). In this state, the operator loosens the fixing screw 23 with a tool so that the gap between the sewing needle 3 and the sword tip 11a becomes a predetermined gap, that is, according to the thickness of the sewing needle 3 to be used. The position of the needle receiving plate 20 is adjusted so that the tip end portion of the sewing needle 3 is guided backward by the ring side end portion 20d, and then the fixing screw 23 is tightened.

即ち、針受け板２０の位置調節後においては、針受け板２０のリーディング側端部２０ｃは剣先１１ａよりも前後方向（下軸４の軸心方向）にて中釜１２側（前側）に位置し、針受け板２０のトレーリング側端部２０ｄは前後方向（下軸４の軸心方向）にて剣先１１ａとほぼ同位置となる。   That is, after the position of the needle receiving plate 20 is adjusted, the leading end 20c of the needle receiving plate 20 is positioned on the inner shuttle 12 side (front side) in the front-rear direction (axial direction of the lower shaft 4) with respect to the sword tip 11a. The trailing side end 20d of the needle receiving plate 20 is substantially at the same position as the sword tip 11a in the front-rear direction (axial direction of the lower shaft 4).

針受け板２０の前後方向位置を調節した後、作業者は針板１上に加工布を載置して縫製を開始する。縫製が開始されると、各縫製サイクルにおいて、縫針３が図５に示す最下位置直前から図２に示す最下位置を経て、図６に示す上昇開始直後に剣先１１ａと出会う直前の所定期間に亙って、針受け板２０の中釜１２側のリーディング側端部２０ｃから剣先１１ａとほぼ同位置にあるトレーリング側端部２０ｄにより縫針３の先端部が後方にガイドされるため、縫針３が剣先１１ａに衝突することはない。   After adjusting the position of the needle receiving plate 20 in the front-rear direction, the operator places a work cloth on the needle plate 1 and starts sewing. When sewing is started, in each sewing cycle, the sewing needle 3 passes through the lowest position shown in FIG. 2 from immediately before the lowest position shown in FIG. 5, and immediately after the ascent start shown in FIG. Accordingly, since the leading end of the sewing needle 3 is guided rearward from the leading end 20c on the side of the hook 12 on the needle receiving plate 20 by the trailing end 20d located at the same position as the sword 11a, the sewing needle 3 does not collide with the sword tip 11a.

しかも、縫針３の先端部が剣先１１ａと出会う直前の所定期間に亙って針受け板２０でガイドされるため、縫針３の目孔３ａから延びる上糸が針受け板２０で邪魔されることがなく、剣先１１ａに確実に引っ掛けられるので、目飛びが生じることなく、綺麗な縫目が順々に形成される。   Moreover, since the tip of the sewing needle 3 is guided by the needle receiving plate 20 for a predetermined period immediately before the needle tip 11a is encountered, the upper thread extending from the eye hole 3a of the sewing needle 3 is obstructed by the needle receiving plate 20. Since it is reliably hooked to the sword tip 11a, beautiful stitches are formed in order without skipping.

このように、作業者が縫製に際して、使用する縫針３を太さが異なる縫針３に変更した場合には、作業者は針受け板２０を位置調節固定機構２２を介して前後方向（下軸４の軸心方向）に位置調節することにより、剣先１１ａが縫針３に出会う直前の所定期間に縫針３を後方にガイドして、縫針３と剣先１１ａとの隙間を、針受け板２０により容易に調節することができる。   In this way, when the operator changes the sewing needle 3 to be used to a different thickness when sewing, the operator moves the needle receiving plate 20 in the front-rear direction (lower shaft 4 via the position adjustment fixing mechanism 22). By adjusting the position in the axial direction), the needle 3 is guided backward in a predetermined period immediately before the sword tip 11a meets the needle 3, so that the clearance between the needle 3 and the sword 11a can be easily made by the needle receiving plate 20. Can be adjusted.

針受け板２０にはこれを取付ける為の固定部２０ａが一体的に形成され、位置調節固定機構２２は、固定部２０ａに形成され且つ下軸４の軸心方向に細長い長穴２０ｂを有し、針受け板２０を、固定部２０ａの長穴２０ｂとこの長穴２０ｂに挿通させた固定螺子２３を介して、下軸４と外釜１１とを連結するカップリング部材５に位置調節可能に固定するように構成されたので、位置調節固定機構２２を簡単化することができる。   The needle receiving plate 20 is integrally formed with a fixing portion 20a for mounting the needle receiving plate 20, and the position adjustment fixing mechanism 22 has a long hole 20b formed in the fixing portion 20a and elongated in the axial direction of the lower shaft 4. The position of the needle receiving plate 20 can be adjusted to the coupling member 5 that connects the lower shaft 4 and the outer hook 11 through the elongated hole 20b of the fixing portion 20a and the fixing screw 23 inserted through the elongated hole 20b. Since it is configured to be fixed, the position adjustment fixing mechanism 22 can be simplified.

しかも、作業者は太さの異なる縫針３を使用する場合、固定螺子２３を緩めるだけで、固定部２０ａの長穴２０ｂを介して針受け板２０を長穴２０ｂの方向である下軸４の軸心方向に簡単に位置調節することができる。しかも、固定螺子２３はカップリング部材５に螺着してあるため、固定螺子２３の締め付け作業や緩め作業の作業性を改善することができる。   In addition, when the operator uses the sewing needles 3 having different thicknesses, the operator only needs to loosen the fixing screw 23 to move the needle receiving plate 20 through the long hole 20b of the fixing portion 20a to the lower shaft 4 in the direction of the long hole 20b. The position can be easily adjusted in the axial direction. Moreover, since the fixing screw 23 is screwed to the coupling member 5, the workability of the tightening operation and the loosening operation of the fixing screw 23 can be improved.

針受け板２０の外周上面は、この針受け板２０により縫針３の先端部をガイドする為に、外釜１１の回転により剣先１１ａが縫針３に接近する程、縫針３の上昇に応じて針受け板２０の半径が拡大する形状に形成されたので、縫針３の先端部が剣先１１ａと出会う直前の所定期間に亙って針受け板２０でガイドされるため、縫針３の目孔から延びる上糸が針受け板２０で邪魔されることなく、剣先１１ａに確実に引っ掛けられ、目飛びが生じることなく、綺麗な縫目が順々に形成される。   The upper surface of the outer periphery of the needle receiving plate 20 guides the tip of the sewing needle 3 by the needle receiving plate 20, so that the needle 11 a approaches the sewing needle 3 by the rotation of the outer hook 11, and the needle rises as the sewing needle 3 rises. Since the receiving plate 20 is formed in a shape in which the radius is increased, the tip of the sewing needle 3 is guided by the needle receiving plate 20 over a predetermined period immediately before the tip of the sewing needle 3a is encountered, and thus extends from the eye of the sewing needle 3. The upper thread is surely hooked to the sword tip 11a without being obstructed by the needle receiving plate 20, and beautiful stitches are formed in order without skipping.

次に、前記実施例を部分的に変更した変更形態について説明する。
１）縫針３と剣先１１ａの隙間寸法が分かり易いように、針受け板２０の固定部２０ａとこれを取付けるカップリング部材５の何れか一方に目盛線を描いておき、固定部２０ａとカップリング部材５の何れか他方に基線を描くようにし、使用する縫針３の種類（木綿針，メリケン針，絹針，キルティング針等）による縫針３の太さに最適な目盛に基線を合わせるようにしてもよい。 Next, a modified embodiment in which the above embodiment is partially modified will be described.
1) A graduation line is drawn on either one of the fixing portion 20a of the needle receiving plate 20 and the coupling member 5 to which the needle receiving plate 20 is attached so that the clearance dimension between the sewing needle 3 and the sword tip 11a is easy to understand. A base line should be drawn on the other of the members 5, and the base line should be adjusted to an optimum scale according to the thickness of the sewing needle 3 depending on the type of the sewing needle 3 used (cotton needle, meriken needle, silk needle, quilting needle, etc.) Also good.

２）針受け板２０の固定部２０ａを外釜１１に装着するようにしてもよい。 2) The fixing portion 20 a of the needle receiving plate 20 may be attached to the outer hook 11.

３）針受け板２０を平面視にて湾曲状に形成し、固定部２０ａからループ押え板１３の外側をＵ字状に回り込んで針進入隙間Ｓに位置するように、針受け板２０を構成するようにしてもよい。 3) The needle receiving plate 20 is formed in a curved shape in a plan view, and the needle receiving plate 20 is positioned so as to be positioned in the needle entry gap S by turning around the outside of the loop presser plate 13 from the fixed portion 20a in a U shape. You may make it comprise.

本発明の実施例に係る全回転釜の右側面図である。It is a right view of the full rotary hook which concerns on the Example of this invention. 縫針が最下位置のときの図１のＢ−Ｂ線縦断背面図である。It is a BB longitudinal cross-sectional rear view of FIG. 1 when a sewing needle is a lowest position. 全回転釜の平面図である。It is a top view of a full rotation hook. 針受け板の斜視図である。It is a perspective view of a needle receiving plate. 縫針の最下位置直前の図２相当図である。FIG. 3 is a view corresponding to FIG. 2 immediately before the lowest position of the sewing needle. 縫針の上昇開始直後の図２相当図である。FIG. 3 is a view corresponding to FIG. 2 immediately after the start of raising the sewing needle.

符号の説明Explanation of symbols

１ 針板
３ 縫針
５ カップリング部材
１０ 垂直全回転釜
１１ 外釜
１１ａ 剣先
１２ 中釜
２０ 針受け板
２０ａ 固定部
２０ｂ 長穴
２２ 位置調節固定機構
２３ 固定螺子 DESCRIPTION OF SYMBOLS 1 Needle plate 3 Sewing needle 5 Coupling member 10 Vertical full rotation hook 11 Outer hook 11a Knife tip 12 Middle hook 20 Needle receiving plate 20a Fixing part 20b Long hole 22 Position adjustment fixing mechanism 23 Fixing screw

Claims (3)

ミシンの針板の下側で縫針の上下動と調時して下軸と一体回転する剣先を有する外釜と、この外釜に回転可能に支持された中釜とを有する全回転釜において、
前記全回転釜とは別体に形成され、前記剣先が前記縫針に出会う直前の所定期間に縫針をガイドして縫針と剣先との隙間を調節可能な針受け板と、
前記針受け板を前記下軸の軸心方向に位置調節可能に前記外釜又はこの外釜と一体回転する部材に取付ける位置調節固定手段と、
とを備えたことを特徴とする全回転釜。 In a full rotary hook having an outer hook having a sword tip that rotates in unison with the lower shaft in synchronism with the vertical movement of the sewing needle below the needle plate of the sewing machine, and an inner hook that is rotatably supported by the outer hook,
A needle receiving plate that is formed separately from the full rotary hook and that can adjust the gap between the needle and the sword tip by guiding the needle during a predetermined period immediately before the sword tip meets the needle;
Position adjustment fixing means for attaching the needle receiving plate to the outer hook or a member that rotates integrally with the outer hook so that the position of the needle receiving plate can be adjusted in the axial direction of the lower shaft;
And a full-rotary pot. 前記位置調節固定手段は、前記針受け板に形成され且つ前記下軸の軸心方向に細長い長穴を有し、前記針受け板を、前記長穴とこの長穴に挿通させた螺子を介して、前記下軸と外釜とを連結するカップリング部材に位置調節可能に固定するように構成されたことを特徴とする請求項１に記載の全回転釜。   The position adjustment fixing means has an elongated hole formed in the needle receiving plate and extending in the axial direction of the lower shaft, and the needle receiving plate is inserted through the elongated hole and a screw inserted into the elongated hole. The full rotary hook according to claim 1, wherein the full rotary hook is configured to be fixed to a coupling member that connects the lower shaft and the outer hook so as to be adjustable in position. 前記針受け板の外周面は、この針受け板により縫針の先端部をガイドする為に、外釜の回転により剣先が縫針に接近する程、縫針の上昇に応じて前記針受け板の半径が拡大する形状に形成されたことを特徴とする請求項１又は２に記載の全回転釜。   Since the outer peripheral surface of the needle receiving plate guides the tip of the sewing needle by the needle receiving plate, the radius of the needle receiving plate increases as the sewing needle rises as the sword tip approaches the sewing needle by the rotation of the outer hook. The full rotary hook according to claim 1, wherein the full rotary hook is formed in an expanding shape.
JP2006222430A 2006-08-17 2006-08-17 Full rotation pot Expired - Fee Related JP5048287B2 (en)

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EP1889957B1 (en) 2017-10-11
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