JP5953062B2 - Sewing machine - Google Patents

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JP5953062B2
JP5953062B2 JP2012032028A JP2012032028A JP5953062B2 JP 5953062 B2 JP5953062 B2 JP 5953062B2 JP 2012032028 A JP2012032028 A JP 2012032028A JP 2012032028 A JP2012032028 A JP 2012032028A JP 5953062 B2 JP5953062 B2 JP 5953062B2
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thread
movable
guide member
yarn
sewing machine
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JP2013165896A (en
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昌夫 宮武
昌夫 宮武
俊雄 久原
俊雄 久原
由紀子 南雲
由紀子 南雲
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ペガサスミシン製造株式会社
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Priority to TW102103491A priority patent/TW201344003A/en
Priority to TW105203149U priority patent/TWM526583U/en
Priority to CN201310050915.9A priority patent/CN103255590B/en
Priority to CN 201320073325 priority patent/CN203128822U/en
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Description

本発明は、縫い針に向かう針糸の繰り出しを促すためのミシンの糸繰り装置に関する。   The present invention relates to a threading device for a sewing machine for urging a needle thread to be fed toward a sewing needle.

従来、この種ミシンの糸繰り装置として、たとえば、図１１に示すように、可動糸案内１と、ミシンアーム部２の前面側に設けられ、針糸を挿通可能な第１糸繰り孔３と第２糸繰り孔４を有し、一端側を中心に針棒５の上下動に同期して往復揺動し糸の繰り出し量を制御する揺動天秤６と、針棒５の上端部に固定され、針糸を挿通可能な糸繰り孔７ａを有し、針糸の繰り出し量を制御する針棒天秤７とを備えるミシン８の糸繰り装置９において、可動糸案内１から揺動天秤６の第１糸繰り孔３を通して、さらに針棒天秤７を経て針１０に至る経路Ｒ１と、経路Ｒ１より短く可動糸案内１から揺動天秤６の第２の糸繰り孔４を通して針１０に至る経路Ｒ２とを選択可能であるように構成したものがある（例えば、特許文献１参照）。
これによれば、糸調子器１１から針１０に至る針糸経路について、異なる長さの糸経路Ｒ１、Ｒ２を選択可能であることから、例えば、緩みのない硬い縫目を形成したい場合や、針糸の伸びを確保したい場合などの場合には、より長い経路Ｒ１を選択すればよく、あるいは少し緩みのある柔らかい縫目を形成したい場合には、より短い経路Ｒ２を選択すればよいというものである。 Conventionally, as this kind of threading device for a sewing machine, for example, as shown in FIG. 11, a movable thread guide 1 and a first threading hole 3 and a second threading hole 3 provided on the front side of the sewing machine arm portion 2 and into which needle threads can be inserted. There is a thread take-up hole 4, and a swinging balance 6 that swings back and forth in synchronism with the vertical movement of the needle bar 5 around one end and is fixed to the upper end of the needle bar 5. In a thread reel device 9 of a sewing machine 8 having a thread reel hole 7a through which a thread can be inserted and a needle bar balance 7 for controlling the amount of needle thread fed, the first thread reel hole 3 of the swing balance 6 from the movable thread guide 1 is provided. Further, a path R1 that reaches the needle 10 through the needle bar balance 7 and a path R2 that is shorter than the path R1 and reaches the needle 10 through the second thread reel 4 of the swinging balance 6 from the movable thread guide 1 can be selected. (For example, refer patent document 1).
According to this, since the thread paths R1 and R2 of different lengths can be selected for the needle thread path from the thread tensioner 11 to the needle 10, for example, when it is desired to form a hard seam without loosening, In cases such as when it is desired to ensure the elongation of the needle thread, a longer path R1 may be selected, or in order to form a soft seam that is slightly loose, a shorter path R2 may be selected. It is.

特開２００３−９７９号公報JP 2003-979 A

しかしながら、上記のようなミシンの糸繰り装置９では、硬い縫目と柔らかい縫目の切り替えに際して、揺動天秤６に一体的に設けてある第１糸繰り孔３又は第２糸繰り孔４に針糸を選択的に通し直す作業が必要であるため、甚だ面倒であるという問題があった。
また、柔らかい縫目の場合、針糸締まりが悪く、縫製品の肌触りが悪い。かと言って、針糸を締めるために糸調子器１１において糸摺動抵抗を強くすると、針糸切れを起こしやすいという問題もあった。 However, in the thread reeling device 9 of the sewing machine as described above, when switching between the hard stitch and the soft stitch, the needle thread is fed into the first thread reel 3 or the second thread reel 4 provided integrally with the swing balance 6. There was a problem that it was very troublesome because it was necessary to re-select selectively.
In addition, in the case of soft seams, the needle thread is not tight and the sewing product is not soft to the touch. However, when the thread sliding resistance is increased in the thread tensioner 11 in order to tighten the needle thread, there is also a problem that the needle thread breaks easily.

本発明は、このような問題を解決するためになされたものであり、その目的とするところは、硬い縫目と柔らかい縫目の切り替えに際し針糸を通し直す煩雑な作業の省力化を図ることのできるミシンの糸繰り装置を提供することにある。また、本発明の他の目的とするところは、柔らかい縫目の場合において針糸切れ無く針糸締まりを良好にするミシンの糸繰り装置を提供することにある。   The present invention has been made to solve such problems, and the object of the present invention is to save labor in complicated work of passing the needle thread through when switching between a hard seam and a soft seam. It is an object of the present invention to provide a threading device for a sewing machine that can be used. Another object of the present invention is to provide a thread take-up device for a sewing machine that provides good needle thread tightening without breakage of the needle thread in the case of soft stitches.

本発明のミシンの糸繰り装置は、糸調子器からの針糸が通される第１糸案内部と、該第１糸案内部からの針糸が通される第２糸案内部と、該第２糸案内部からの針糸が通される可動糸案内部材と、該可動糸案内部材からの針糸が通される糸繰り孔を揺動先端側に有し、揺動基端側を支持する揺動軸まわりに上下揺動するよう設置された揺動天秤とを、ミシンアーム部の前面側に備えるミシンの糸繰り装置において、前記可動糸案内部材が、前記揺動天秤とは別体に構成され、かつ前記糸繰り孔と前記第２糸案内部との間で上下・左右の位置調整を可能に設置され、前記第２糸案内部が、前記第２糸案内部に通される針糸を前記可動糸案内部材と前記第１糸案内部との間において上向き突出の山形状に屈曲させるように、前記可動糸案内部材と前記第１糸案内部との間に配設されていることに特徴を有するものである。
これによると、硬い縫目と柔らかい縫目の切り替えに際し、糸繰り孔と第２糸案内部との間で可動糸案内部材の上下・左右の位置を調整することで硬い縫目と柔らかい縫目の切り替えを可能にするので、従来の針糸を通し直す面倒な作業に比べ作業が簡単に行える。 The yarn threading device for a sewing machine according to the present invention includes a first thread guide portion through which a needle thread from a thread tension device is passed, a second thread guide portion through which a needle thread from the first yarn guide portion is passed, A movable yarn guide member through which the needle yarn from the two yarn guide portion is passed, and a thread reel hole through which the needle yarn from the movable yarn guide member is passed are provided on the swinging tip side, and the swinging proximal end side is supported. and the installed swing balance to swing vertically around the pivot shaft, the thread take-up device of a sewing machine provided on the front side of the sewing machine arm portion, the movable yarn guide member, configured separately from said rocking balance The needle thread passing through the second thread guide part is installed so that the vertical / left / right position can be adjusted between the yarn reeling hole and the second thread guide part. The movable yarn guide member and the movable yarn guide member so as to be bent in a mountain shape protruding upward between the movable yarn guide member and the first yarn guide portion. Serial and has a feature that is disposed between the first yarn guide.
According to this, when switching between a hard seam and a soft seam, the vertical and horizontal positions of the movable thread guide member are adjusted between the thread reel hole and the second thread guide part to thereby make a hard seam and a soft seam. Since switching is possible, the work can be easily performed compared to the troublesome work of passing the conventional needle thread.

さらに、柔らかい縫目の場合において、糸調子器において糸摺動抵抗を強くする場合のように針糸切れを起こすことなく、針糸を良好に締めることができることになる。 Furthermore , in the case of soft stitches, the needle thread can be tightened satisfactorily without causing needle thread breakage as in the case of increasing the thread sliding resistance in the thread tension device.

また、本発明によるミシンの糸繰り装置は、前記可動糸案内部材の上下位置の調整手段は、前記ミシンアーム部の前面側にカバーブラケットを固定し、そのカバーブラケットに案内孔を上下方向にわたって長く設ける一方、前記可動糸案内部材を取り付けた取付ブラケットを前記案内孔に通したネジにより固定するようになしており、該ネジを前記案内孔に沿って摺動させることで前記可動糸案内部材の上下位置を調整できるようにするという構成を採用することができる。これによれば、安定よく確実に可動糸案内部材の上下位置を調整することができる。
また、本発明によるミシンの糸繰り装置は、前記可動糸案内部材の左右位置の調整手段は、前記可動糸案内部材を、前記取付ブラケットに左右方向にわたって長く設けた案内孔に通したネジにより固定するようになしており、該ネジを前記案内孔に沿って摺動させることで前記可動糸案内部材の左右方向の位置を調整できるようにするという構成を採用することができる。これによれば、安定よく確実に可動糸案内部材の左右位置を調整することができる。 Further, in the thread reeling device for a sewing machine according to the present invention, the adjusting means for adjusting the vertical position of the movable yarn guide member fixes a cover bracket to the front side of the sewing machine arm portion, and provides a long guide hole in the cover bracket in the vertical direction. On the other hand, the mounting bracket to which the movable thread guide member is attached is fixed by screws passed through the guide holes, and the screws are slid along the guide holes to move the movable thread guide members up and down. A configuration in which the position can be adjusted can be employed. According to this, the vertical position of the movable yarn guide member can be adjusted stably and reliably.
Further, in the yarn reeling device for a sewing machine according to the present invention, the adjustment means for the left and right position of the movable yarn guide member fixes the movable yarn guide member with a screw that is passed through a guide hole that is long in the left and right direction in the mounting bracket. Thus, it is possible to adopt a configuration in which the position of the movable yarn guide member in the left-right direction can be adjusted by sliding the screw along the guide hole. According to this, the left-right position of the movable yarn guide member can be adjusted stably and reliably.

本発明によれば、揺動天秤の糸繰り孔と第２糸案内部との間で可動糸案内部材の上下・左右の位置を調整するという簡単な手段で、硬い縫目と柔らかい縫目の切り替えを可能にするので、針糸を通し直す面倒な作業の省力化を図り得るという利点がある。   According to the present invention, it is possible to switch between a hard seam and a soft seam by a simple means of adjusting the vertical and horizontal positions of the movable thread guide member between the thread take-up hole of the swing balance and the second thread guide. This makes it possible to save labor in troublesome work of passing the needle thread.

本発明の糸繰り装置が適用された二重環縫いミシンの斜視図である。It is a perspective view of a double chain stitch sewing machine to which the yarn reel device of the present invention is applied. 同二重環縫いミシンの正面図である。It is a front view of the double chain stitch sewing machine. 同二重環縫いミシンの平面図である。It is a top view of the double chain stitch sewing machine. 同二重環縫いミシンにおける糸繰り装置の拡大斜視図である。It is an expansion perspective view of the yarn reeling device in the double chain stitch sewing machine. 同二重環縫いミシンにおける糸繰り装置の拡大正面図である。It is an enlarged front view of the yarn reeling device in the double chain stitch sewing machine. 同二重環縫いミシンにおける糸繰り装置の拡大平面図である。It is an enlarged plan view of the yarn reeling device in the same double chain stitch sewing machine. 同二重環縫いミシンにおける糸繰り装置をカバーブラケットを取り外した状態で示す拡大斜視図である。FIG. 3 is an enlarged perspective view showing the yarn reeling device in the double chain stitch sewing machine with the cover bracket removed. 同二重環縫いミシンにおける糸繰り装置をカバーブラケットを取り外した状態で示す拡大正面図である。FIG. 3 is an enlarged front view showing the yarn reeling device in the double chain stitch sewing machine with the cover bracket removed. 同二重環縫いミシンにおける糸繰り装置をカバーブラケットを取り外した状態で示す拡大平面図である。FIG. 6 is an enlarged plan view showing the yarn reeling device in the double chain stitch sewing machine with the cover bracket removed. 同二重環縫いミシンにおける糸繰り装置の概略正面図である。It is a schematic front view of the yarn reeling device in the double chain stitch sewing machine. 従来例の二重環縫いミシンにおける糸繰り装置の概略正面図である。It is a schematic front view of the yarn reeling device in the double chain stitch sewing machine of the conventional example.

以下、本発明に係るミシンの糸繰り装置の好適な実施形態例を図面に基づいて説明する。   DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a sewing machine yarn reel according to the present invention will be described below with reference to the drawings.

図１〜図３には、本発明の一実施形態例としての糸繰り装置２０を備えた二重環縫いミシンであるミシン２１を示している。図１〜図３において、ミシン２１は、ベッド部２１ａ、ベッド部２１ａから立設する縦胴部２１ｂ、および縦胴部２１ｂからベッド部２１ａに平行するように延出するミシンアーム部２１ｃを有してなる。   1 to 3 show a sewing machine 21 that is a double chain stitch sewing machine provided with a yarn reel device 20 as an embodiment of the present invention. 1 to 3, the sewing machine 21 has a bed portion 21a, a vertical trunk portion 21b standing from the bed portion 21a, and a sewing machine arm portion 21c extending from the vertical trunk portion 21b so as to be parallel to the bed portion 21a. Do it.

ミシン２１は、図示しないミシン主軸によって上下に往復駆動される針棒２２の下端部に固定された３本の針２３、各針２３に通された針糸のそれぞれに所定の張力を与える３つの糸調子器２４と、上飾りスプレッダー２５に通される上飾り糸に所定の張力を与える糸調子器２６と、図示しないルーパーに通されているルーパー糸に所定の張力を与える糸調子器２７とを備える。上飾りスプレッダー２５は布地の表面側において、また前記ルーパーはベッド部２１ａ内においていずれも前記ミシン主軸に連動するように構成され、ミシン２１は、３本の針２３と、図示しないルーパーとの協働により形成される縫目に上飾り糸を絡ませながら二重環の飾り縫いを形成するようになっている。 The sewing machine 21 has three needles 23 fixed to the lower end of a needle bar 22 that is reciprocated up and down by a sewing machine main shaft (not shown), and three needles that apply predetermined tension to the needle threads passed through the needles 23. A thread tensioner 24, a thread tensioner 26 that applies a predetermined tension to the upper decoration thread that is passed through the upper decoration spreader 25, and a thread tensioner 27 that applies a predetermined tension to the looper thread that is passed through a looper (not shown). Is provided. The upper spreader 25 is constructed so that both the cloth surface and the looper are linked to the main spindle of the sewing machine in the bed portion 21a. The sewing machine 21 is a combination of three needles 23 and a looper (not shown). A double ring decorative stitch is formed by entwining an upper decorative thread in a seam formed by the action.

糸繰り装置２０は、縦胴部２１ｂの前面側に設置された糸調子器２４、２６、２７の左側でかつミシンアーム部２１ｃの前面側に配された給油装置２８、糸調子器２４、２６、２７と給油装置２８との間に配された第１糸案内部２９、給油装置２８の左側に配された第２糸案内部３０、第２糸案内部３０の左側に配された揺動天秤３１、および揺動天秤３１とは別体に構成され揺動天秤３１の前側に配された可動糸案内部材３２を備え、縫製中に３本の針糸Ｔ（図１では１本のみ示す）を引っ張る糸取りと、緩めることによる糸の繰り出しを繰り返すものである。第１糸案内部２９は３つの糸孔３３を有し、これら糸孔３３にそれぞれ３つの糸調子器２４からの３本の針糸Ｔが通されるようになっている。給油装置２８は、潤滑剤としてのシリコン油が含浸しているフェルトを内部に詰めている給油箱２８ａからなり、これに針糸Ｔを通すことで、針糸Ｔにシリコン油を付与するようになっている。   The yarn reeling device 20 includes an oil supply device 28, a thread tensioner 24, 26, which are disposed on the left side of the thread tensioner 24, 26, 27 installed on the front side of the vertical body part 21b and on the front side of the sewing machine arm part 21c. 27, a first yarn guide portion 29 disposed between the oil supply device 28, a second yarn guide portion 30 disposed on the left side of the oil supply device 28, and a swinging balance disposed on the left side of the second yarn guide portion 30. 31 and a movable thread guide member 32 that is configured separately from the swinging balance 31 and disposed on the front side of the swinging balance 31, and has three needle threads T (only one is shown in FIG. 1) during sewing. The thread take-up that pulls the thread and the thread feeding by loosening are repeated. The first thread guide portion 29 has three thread holes 33 through which the three needle threads T from the three thread tensioners 24 are passed. The oil supply device 28 is composed of an oil supply box 28a filled with felt impregnated with silicon oil as a lubricant, and the needle thread T is passed therethrough so that the silicon oil is applied to the needle thread T. It has become.

揺動天秤３１は、図７、図８に示すように、前記ミシン主軸に連結された揺動軸３１ａを中心に上下揺動可能な揺動基台３１ｂと、揺動基台３１ｂに固定され左右に長く設けられた揺動腕３１ｃとからなり、針棒２２に同期して所定の上死点と下死点の間を揺動することで糸の繰り出し量を制御する。揺動腕３１ｃの左端部（先端部）には糸繰り孔３４が３つ形成されている。   As shown in FIGS. 7 and 8, the swing balance 31 is fixed to the swing base 31b and the swing base 31b which can swing up and down around a swing shaft 31a connected to the main spindle of the sewing machine. It consists of a swing arm 31c that is long on the left and right, and controls the thread feed amount by swinging between a predetermined top dead center and bottom dead center in synchronization with the needle bar 22. Three thread reels 34 are formed at the left end (tip) of the swing arm 31c.

図７、図８に示すように、揺動腕３１ｃの左端部（先端部）より左側に該当するミシンアーム部２１ｃの前面側には、第３，４糸案内部３５，３６を配備する。第３糸案内部３５と糸繰り孔３４との間には糸受け３７を設置する。   As shown in FIGS. 7 and 8, third and fourth thread guide portions 35 and 36 are arranged on the front side of the sewing machine arm portion 21c corresponding to the left side of the left end portion (tip portion) of the swing arm 31c. A yarn receiver 37 is installed between the third yarn guide portion 35 and the yarn reeling hole 34.

図７〜図９に示すように、可動糸案内部材３２は、支持体３２ａと、支持体３２ａを貫通するようにネジ止めされ上端部に糸孔３８が形成された３本の糸案内棒３２ｂとからなる。各糸案内棒３２ｂは、支持体３２ａに対し上下方向に摺動し所望の位置で固定することができ、これにより糸取り及び糸繰り量を調整できるようになっている。   As shown in FIGS. 7 to 9, the movable thread guide member 32 includes a support body 32 a and three thread guide bars 32 b that are screwed so as to penetrate the support body 32 a and have a thread hole 38 formed at the upper end. It consists of. Each thread guide bar 32b slides in the vertical direction with respect to the support 32a and can be fixed at a desired position, thereby adjusting the thread take-up and the yarn take-up amount.

さらに、可動糸案内部材３２は、揺動天秤３１の糸繰り孔３４と第２糸案内部３０との間で上下・左右の位置調整を可能に設置されている。これによっても糸取り及び糸繰り量を調整できるようになっている。
可動糸案内部材３２の左右・上下位置の具体的な調整手段としては、図４〜図６に示すように、ミシンアーム部２１ｃの前面側に、上下方向にわたって長い形の案内孔３９を有するカバーブラケット４０をネジ４１で取付ける。そして、このカバーブラケット４０には、左右方向に長い形の案内孔４２を有する取付ブラケット４３をカバーブラケット４０の案内孔３９に通したネジ４４により固定すると共に、該ネジ４４を案内孔３９に沿って摺動させることで取付ブラケット４３の上下方向の位置を安定よく確実に調整できるようになしている。取付ブラケット４３には可動糸案内部材３２を案内孔４２に通したネジ４５により固定すると共に、該ネジ４５を案内孔４２に沿って摺動させることで可動糸案内部材３２の左右方向の位置を安定よく確実に調整できるようになしている。可動糸案内部材３２の上下方向の位置の調整は、ネジ４４を案内孔３９に沿って摺動させて取付ブラケット４３の上下方向の位置を調整することで行えるようにしてある。 Further, the movable yarn guide member 32 is installed between the yarn reel hole 34 of the swing balance 31 and the second yarn guide portion 30 so as to be able to adjust the vertical and horizontal positions. This also makes it possible to adjust the thread take-up and the thread take-up amount.
As specific adjustment means for the left and right and vertical positions of the movable yarn guide member 32, as shown in FIGS. 4 to 6, a cover having a guide hole 39 that is long in the vertical direction on the front side of the sewing machine arm portion 21c. The bracket 40 is attached with a screw 41. A mounting bracket 43 having a guide hole 42 that is long in the left-right direction is fixed to the cover bracket 40 with a screw 44 that passes through the guide hole 39 of the cover bracket 40, and the screw 44 is extended along the guide hole 39. The position of the mounting bracket 43 in the vertical direction can be adjusted stably and reliably. The movable thread guide member 32 is fixed to the mounting bracket 43 with a screw 45 passed through the guide hole 42, and the position of the movable thread guide member 32 in the left-right direction is determined by sliding the screw 45 along the guide hole 42. It is designed so that it can be adjusted stably and reliably. The vertical position of the movable thread guide member 32 can be adjusted by sliding the screw 44 along the guide hole 39 and adjusting the vertical position of the mounting bracket 43.

第２糸案内部３０は、柔らかい縫目を形成する場合において、針糸Ｔを締めるにあたって糸調子器２４にて糸摺動抵抗を強くする場合のように針糸切れが起こることなく、針糸Ｔを良好に締めることができるようにするために、可動糸案内部材３２と第１糸案内部２９との間に、第２糸案内部３０に通される針糸Ｔが図１０のように上向き突出の山形状に屈曲するように配設する。この第２糸案内部３０は、所定位置に定置固定すること、また上下位置調整可能にあるいは左右位置調整可能に設置することは任意である。   When the second thread guide portion 30 forms a soft seam, the thread thread breakage does not occur as in the case where the thread tension resistance 24 increases the thread sliding resistance when the needle thread T is tightened. In order to allow T to be tightened satisfactorily, the needle thread T passed through the second thread guide section 30 is moved between the movable thread guide member 32 and the first thread guide section 29 as shown in FIG. It arrange | positions so that it may be bent in the mountain shape of upward protrusion. It is optional to fix the second yarn guide portion 30 at a predetermined position, and to install the second yarn guide portion 30 so that the vertical position can be adjusted or the horizontal position can be adjusted.

糸調子器２４を通した針糸Ｔは、第１糸案内部２９、給油装置２８を通した後、第２糸案内部３０に通す。次いで、可動糸案内部材３２の糸案内棒３２ｂに通し、更に揺動天秤３１の糸繰り孔３４に通す。その後、糸受け３７、第３糸案内部３５、第４糸案内部３６の順に通して針２３に向かうようになっている。なお、図４に示すように、カバーブラケット４０には、揺動天秤３１の糸繰り孔３４から糸受け３７に通される針糸Ｔをガードするためのフィンガーガード４６を取付けている。   The needle thread T that has passed through the thread tensioner 24 passes through the first thread guide 29 and the oil supply device 28, and then passes through the second thread guide 30. Next, the thread is passed through the thread guide rod 32 b of the movable thread guide member 32, and further through the thread reel hole 34 of the swing balance 31. After that, the thread receiver 37, the third thread guide part 35, and the fourth thread guide part 36 are passed through in this order toward the needle 23. As shown in FIG. 4, a finger guard 46 is attached to the cover bracket 40 to guard the needle thread T that is passed from the thread take-up hole 34 of the swing balance 31 to the thread receiver 37.

可動糸案内部材３２から揺動天秤３１を経て第３糸案内部材３５に至る針糸経路の経路長をＬとし、針棒上死点時の経路長をＬ１とし、針棒下死点時の経路長をＬ２とし、針棒上死点⇔下死点の経路長差を△Ｌ＝Ｌ１−Ｌ２、針棒２２の上下ストローク量をＨとした場合において、０＜△Ｌ＜Ｈとなるように、可動糸案内部材３２の左右・上下位置調整を可能にしている。
なお、図１０において、実線ａで示す針糸Ｔは針棒上死点時における針糸経路を、破線ｂで示す針糸Ｔは針棒下死点時における針糸経路を示している。 The path length of the needle thread path from the movable thread guide member 32 through the swinging balance 31 to the third thread guide member 35 is L, the path length at the top dead center of the needle bar is L1, and When the path length is L2, the path length difference between the needle bar top dead center and the bottom dead center is ΔL = L1−L2, and the vertical stroke amount of the needle bar 22 is H, 0 <ΔL <H. In addition, the left / right / up / down positions of the movable yarn guide member 32 can be adjusted.
In FIG. 10, a needle thread T indicated by a solid line a indicates a needle thread path at the top dead center of the needle bar, and a needle thread T indicated by a broken line b indicates a needle thread path at the bottom dead center of the needle bar.

上記構成を有する糸繰り装置２０において、比較的弛みのない硬い縫目を形成したい場合や糸切れ等を防ぎたい場合には、可動糸案内部材３２を左方向でかつ下方へ移動調整することで、針棒上死点⇔下死点の経路長差△Ｌを比較的大きくすればよい。   In the yarn reeling device 20 having the above configuration, when it is desired to form a hard seam that is relatively free of slack or to prevent thread breakage or the like, the movable yarn guide member 32 is moved and adjusted leftward and downward, The path length difference ΔL between the needle bar top dead center and the bottom dead center may be made relatively large.

また、ある程度ゆるみのある柔らかい縫い目を形成したい場合には、逆に可動糸案内部材３２を右方向でかつ上方へ移動調整することで、針棒上死点⇔下死点の経路長差△Ｌを比較的小さくすればよい。   On the other hand, when it is desired to form a soft seam that is loosened to some extent, the path length difference ΔL between the needle bar upper dead point and the lower dead point is adjusted by moving the movable thread guide member 32 to the right and upward. Should be relatively small.

以上説明したミシン２１における糸繰り装置２０によれば、可動糸案内部材３２は、揺動天秤３１とは別体に構成したうえで、揺動天秤３１の糸繰り孔３４と第２糸案内部３０との間で上下・左右の位置調整を可能にした。したがって、緩みのない硬い縫目を形成したい場合や、糸の伸びを確保したい場合などには、可動糸案内部材３２を左方向でかつ下方へ移動調整し、少し緩みのある柔らかい縫目を形成したい場合には、可動糸案内部材３２を右方向でかつ上方へ移動調整するだけの簡単な作業で、硬い縫目と柔らかい縫目の切り替えが容易に行える。   According to the yarn reeling device 20 in the sewing machine 21 described above, the movable yarn guide member 32 is configured separately from the swing balance 31, and then the yarn reel hole 34 of the swing balance 31, the second yarn guide portion 30, and the like. The vertical and horizontal positions can be adjusted between the two. Therefore, when it is desired to form a hard seam without loosening or when it is desired to ensure the elongation of the thread, the movable thread guide member 32 is moved and adjusted to the left and downward to form a soft seam with a little slack. If desired, the hard stitches and the soft stitches can be easily switched by a simple operation of moving and adjusting the movable thread guide member 32 rightward and upward.

Ｔ 針糸
２０ 糸繰り装置
２１ ミシン
２１ｃ ミシンアーム部
２４，２６，２７ 糸調子器
２９ 第１糸案内部
３０ 第２糸案内部
３１ 揺動天秤
３１ａ 揺動軸
３２ 可動糸案内部材
３４ 糸繰り孔
３９，４２ 案内孔
４０ カバーブラケット
４１，４４，４５ ネジ
４３ 取付ブラケット T needle thread 20 thread take-up device 21 sewing machine 21c sewing machine arm parts 24, 26, 27 thread tensioner 29 first thread guide part 30 second thread guide part 31 swing balance 31a swing shaft 32 movable thread guide member 34 thread take-up hole 39, 42 Guide hole 40 Cover bracket 41, 44, 45 Screw 43 Mounting bracket

Claims (3)

糸調子器からの針糸が通される第１糸案内部と、該第１糸案内部からの針糸が通される第２糸案内部と、該第２糸案内部からの針糸が通される可動糸案内部材と、該可動糸案内部材からの針糸が通される糸繰り孔を揺動先端側に有し、揺動基端側を支持する揺動軸まわりに上下揺動するよう設置された揺動天秤とを、ミシンアーム部の前面側に備えるミシンの糸繰り装置において、
前記可動糸案内部材は、前記揺動天秤とは別体に構成され、かつ前記糸繰り孔と前記第２糸案内部との間で上下・左右の位置調整を可能に設置され、
前記第２糸案内部は、前記第２糸案内部に通される針糸を前記可動糸案内部材と前記第１糸案内部との間において上向き突出の山形状に屈曲させるように、前記可動糸案内部材と前記第１糸案内部との間に配設されていることを特徴とする、ミシンの糸繰り装置。 A first thread guide section through which a needle thread from a thread tensioner is passed, a second thread guide section through which a needle thread from the first thread guide section is passed, and a needle thread from the second thread guide section A movable thread guide member that is passed through and a yarn reel hole through which the needle thread from the movable thread guide member is passed are provided on the swing tip side, and swings up and down around a swing shaft that supports the swing base end side. In the yarn reeling device of the sewing machine provided with the swinging balance installed in the front side of the sewing machine arm part,
The movable yarn guide member, said the swing balance is constructed separately and is disposed capable of vertical and horizontal alignment between the thread take-up hole and the second thread guide portion,
The second thread guide portion is movable so as to bend the needle thread passed through the second thread guide portion into an upward projecting mountain shape between the movable yarn guide member and the first thread guide portion. A yarn reeling device for a sewing machine, which is disposed between a yarn guide member and the first yarn guide portion . 前記可動糸案内部材の上下位置の調整手段は、前記ミシンアーム部の前面側にカバーブラケットを固定し、そのカバーブラケットに案内孔を上下方向にわたって長く設ける一方、前記可動糸案内部材を取り付けた取付ブラケットを前記案内孔に通したネジにより固定するようになしており、該ネジを前記案内孔に沿って摺動させることで前記可動糸案内部材の上下位置を調整できるようにしてある、請求項１記載のミシンの糸繰り装置。 The adjustment means for adjusting the vertical position of the movable yarn guide member is a mounting in which a cover bracket is fixed to the front side of the sewing machine arm portion, and a guide hole is provided in the cover bracket extending in the vertical direction while the movable yarn guide member is attached. The bracket is fixed by a screw passed through the guide hole, and the vertical position of the movable thread guide member can be adjusted by sliding the screw along the guide hole. thread take-up device 1 Symbol placement of the sewing machine. 前記可動糸案内部材の左右位置の調整手段は、前記可動糸案内部材を、前記取付ブラケットに左右方向にわたって長く設けた案内孔に通したネジにより固定するようになしており、該ネジを前記案内孔に沿って摺動させることで前記可動糸案内部材の左右方向の位置を調整できるようにしてある、請求項２に記載のミシンの糸繰り装置。 The adjusting means for adjusting the left and right position of the movable thread guide member is configured to fix the movable thread guide member with a screw that is passed through a guide hole that is provided in the mounting bracket so as to extend in the left and right direction. The thread reeling device for a sewing machine according to claim 2 , wherein the position of the movable yarn guide member in the left-right direction can be adjusted by sliding along the hole.
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