JP2002355480A - Loop supporting device for zigzag sewing machine - Google Patents
Loop supporting device for zigzag sewing machineInfo
- Publication number
- JP2002355480A JP2002355480A JP2001164305A JP2001164305A JP2002355480A JP 2002355480 A JP2002355480 A JP 2002355480A JP 2001164305 A JP2001164305 A JP 2001164305A JP 2001164305 A JP2001164305 A JP 2001164305A JP 2002355480 A JP2002355480 A JP 2002355480A
- Authority
- JP
- Japan
- Prior art keywords
- loop
- sewing machine
- needle
- zigzag sewing
- 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.)
- Pending
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明はジグザグミシンのル
ープ支え装置に係り、特に針を左右に振ることにより、
例えばジグザグ縫い，刺繍縫い，模様縫い等を行うジグ
ザグミシンのループ支え装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a loop supporting device for a zigzag sewing machine.
For example, the present invention relates to a loop support device of a zigzag sewing machine that performs zigzag sewing, embroidery sewing, pattern sewing, and the like.
【０００２】[0002]
【従来の技術】図６に示すように、従来のミシンは、水
平釜60の外釜61には内釜62が収容され、この内釜62が外
釜61の底部に貼付けられたマグネット（図示せず）で下
方に吸引されている。内釜62には突起62Ａが備えられ、
この突起62Ａは内釜回転防止部材63の板ばね部63Ａに当
接している。よって、外釜61が反時計回り方向（矢印方
向）に回転した際に内釜62を静止状態に保つことができ
る。2. Description of the Related Art As shown in FIG. 6, in a conventional sewing machine, an inner shuttle 62 is accommodated in an outer shuttle 61 of a horizontal shuttle 60, and the inner shuttle 62 is attached to the bottom of the outer shuttle 61 (see FIG. 6). (Not shown). The inner pot 62 is provided with a projection 62A,
The protrusion 62A is in contact with the leaf spring portion 63A of the inner hook rotation preventing member 63. Therefore, when the outer hook 61 rotates in the counterclockwise direction (the direction of the arrow), the inner hook 62 can be kept stationary.
【０００３】また、水平釜60の上方には針板65が設けら
れ、この針板65には長孔状の開口66が形成され、この開
口66に針67が挿通される。この針67は、ジグザグ縫いを
する際に、開口66の左端から右端との間で振られながら
上下方向に移動する。この際に、針67が下降位置まで下
降した後上昇を開始すると、図７に示すように上糸68に
たるみが発生してループ68Ａを形成する。[0003] A needle plate 65 is provided above the horizontal shuttle 60, and an elongated opening 66 is formed in the needle plate 65, and a needle 67 is inserted through the opening 66. The needle 67 moves up and down while swinging from the left end to the right end of the opening 66 when performing zigzag stitching. At this time, when the needle 67 starts to move up after descending to the lowering position, the upper thread 68 becomes slack as shown in FIG. 7 to form a loop 68A.
【０００４】このとき外釜61（図６参照）が回転してい
るので、上糸68のループ68Ａの内側に外釜61の剣先69が
進入し、外釜61の剣先69にループ68Ａが補足される。こ
の状態からさらに外釜61を回転して上糸68を内釜62に巻
回させ、これにより上糸68と下糸（図示せず）が絡み合
い縫製物を上糸68と下糸とで縫うことができる。At this time, since the outer hook 61 (see FIG. 6) is rotating, the sword 69 of the outer hook 61 enters the inside of the loop 68A of the upper thread 68, and the sword 69 of the outer hook 61 is supplemented by the loop 68A. Is done. From this state, the outer hook 61 is further rotated to wind the upper thread 68 around the inner hook 62, whereby the upper thread 68 and the lower thread (not shown) are entangled and the sewing product is sewn with the upper thread 68 and the lower thread. be able to.
【０００５】[0005]
【発明が解決しようとする課題】このように、ジグザグ
ミシンで縫製物を縫う際には、針67の下降位置は縫製物
の送り方向の右側と左側（すなわち、図６に示す開口66
の右端と左端）とに交互に振られる。針67の下降位置が
縫製物の送り方向の左側の場合、外釜61の回転が一定で
あるため、上糸68のループ68Ａに剣先69を進入させて、
ループ68Ａを剣先69で補足するタイミングが僅かに遅れ
る。As described above, when sewing a sewn product with a zigzag sewing machine, the lowering position of the needle 67 is set to the right and left sides in the feed direction of the sewn product (that is, the opening 66 shown in FIG. 6).
(Right end and left end). When the lowering position of the needle 67 is on the left side in the feed direction of the sewn product, the rotation of the outer hook 61 is constant, so the tip 69 enters the loop 68A of the upper thread 68,
The timing of supplementing the loop 68A with the tip 69 is slightly delayed.
【０００６】このため、上糸68のループ68Ａが右側に比
べてループが大きくなり、図８に示すように、ループ68
Ｂにくずれや、捩れ等が発生する。ループ68Bのように
くずれたり、捩れたりすると、外釜61の剣先69をループ
68Bに進入させることができない場合がある。従って、
上糸68のループ68Bを剣先69が補足できなと、目飛びが
発生するという問題があった。For this reason, the loop 68A of the upper thread 68 is larger than the right side, and as shown in FIG.
B is distorted or twisted. If it breaks or twists like the loop 68B, the sword 69 of the outer hook 61 will loop.
You may not be able to enter the 68B. Therefore,
If the point 69 cannot supplement the loop 68B of the upper thread 68, there is a problem that skipping occurs.
【０００７】本発明は、前述した問題点に鑑みてなされ
たものであり、その目的は、ジグザグミシンでジグザグ
縫い，刺繍縫い，模様縫い等を行う際に目飛びの発生を
防止できるジグザグミシンのループ支え装置を提供する
ことにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a zigzag sewing machine capable of preventing stitch skipping when performing zigzag sewing, embroidery sewing, pattern sewing, and the like with a zigzag sewing machine. It is to provide a loop supporting device.
【０００８】[0008]
【課題を解決するための手段】前述した目的を達成する
ために、本発明は、請求項１に記載したように、上軸に
駆動されて上下方向に往復運動可能な針棒と、前記針棒
に支持されているとともに上糸を挿通可能な針と、前記
針棒を布送り方向との交差方向に振幅させる振幅手段
と、下軸に駆動されるとともに回転自在な外釜と、前記
外釜に収容されるとともに回転不能に保持される内釜
と、前記内釜に収容されるとともに下糸を巻回したボビ
ンと、前記外釜の外周面における周方向に突出されて前
記上糸のループを補足する剣先とを有するジグザグミシ
ンのループ支え装置であって、前記針の針振り位置が外
釜回転方向下流側であるときに、前記ループの挿通方向
が前記剣先の突出方向に沿うように前記ループの姿勢を
維持するループ倒れ防止部材が設けられていることを特
徴としている。In order to achieve the above-mentioned object, the present invention provides a needle bar driven by an upper shaft and capable of reciprocating in a vertical direction, and a needle bar. A needle supported by a rod and through which an upper thread can be inserted, an amplitude means for causing the needle bar to oscillate in a direction crossing the cloth feeding direction, an outer hook driven and rotatable by a lower shaft, An inner hook that is housed in the hook and held non-rotatably, a bobbin that is housed in the inner hook and has a lower thread wound thereon, and a bobbin that is projected in a circumferential direction on an outer peripheral surface of the outer hook to form the upper thread. A zigzag sewing machine loop supporting device having a sword tip for supplementing a loop, wherein when the needle swinging position is on the downstream side in the outer hook rotating direction, the insertion direction of the loop is along the projecting direction of the sword tip. To keep the posture of the loop It is characterized in that member.
【０００９】ここで、針棒を振幅させてジグザグ縫いす
る際に、針の下降位置は縫製物の送り方向の右側と左側
とに交互に振られる。針の下降位置が縫製物の送り方向
の左側の場合には、外釜の回転が一定であるため上糸の
ループを剣先が補足するタイミングが遅れる。このた
め、上糸のループにくずれや、捩れ等のループ倒れが発
生しようとする。Here, when the zigzag stitch is performed while the needle bar is oscillated, the descending position of the needle is alternately swung to the right and left sides in the feed direction of the sewing product. When the needle lowering position is on the left side in the feed direction of the sewn product, the rotation of the outer hook is constant, so the timing at which the tip of the needle catches the loop of the upper thread is delayed. For this reason, the loop of the upper thread tends to be broken or twisted or the like, and the loop falls.
【００１０】そこで、請求項１のジグザグミシンのルー
プ支え装置において、針の下降位置が縫製物の送り方向
左側であるときに、上糸のループの挿通方向が剣先の突
出方向に沿うようにループの姿勢を維持するループ倒れ
防止部材を設けた。これにより、上糸のループに剣先を
確実に進入させることができる。Therefore, in the loop supporting device for a zigzag sewing machine according to the first aspect, when the lowering position of the needle is on the left side in the feed direction of the sewing product, the loop of the upper thread is inserted along the projecting direction of the blade point. A loop fall prevention member for maintaining the posture is provided. As a result, the point of the sword can reliably enter the loop of the upper thread.
【００１１】また、本発明は、請求項２に記載したよう
に、前記外釜に対して前記内釜の浮き上がりを防止する
ために前記外釜の開口縁部に設けられた浮き止め部材を
有し、前記ループ倒れ防止部材が前記浮き止め部材の先
端に設けられていることを特徴としている。According to a second aspect of the present invention, there is provided a floating stopper provided at an opening edge of the outer shuttle to prevent the inner shuttle from floating with respect to the outer shuttle. The loop fall prevention member is provided at a tip of the floating retaining member.
【００１２】浮き止め部材は、外釜内のマグネットの吸
引力に反して内釜が外釜から浮き上がろうとした時に、
内釜の浮き上がりを防止する部材である。この浮き止め
部材にループ倒れ防止部材を一体に形成することで、部
品点数を増やす必要がない。[0012] When the inner hook tries to lift up from the outer hook against the attractive force of the magnet in the outer hook,
This member prevents the inner pot from lifting. By forming the loop fall prevention member integrally with the retaining member, it is not necessary to increase the number of parts.
【００１３】また、本発明は、請求項３に記載したよう
に、前記下糸を切断するために、糸補足部が設けられた
動メス台を有し、前記ループ倒れ防止部材が前記動メス
台の下面を案内可能であることを特徴としている。According to a third aspect of the present invention, there is provided a moving knife base provided with a thread catching portion for cutting the lower thread, wherein the loop falling prevention member is provided with the moving knife. It is characterized in that the lower surface of the table can be guided.
【００１４】ジグザグ縫いの際に、動メス台で下糸を切
る時には、動メス台を水平釜に対して所定間隔を保つ必
要がある。そこで、ループ倒れ防止部材で動メス台の下
面を案内可能とすることで、動メス台を水平釜に対して
所定間隔を保ち、動メス台で下糸を確実に切ることがで
きるようにした。このように、ループ倒れ防止部材で、
動メス台を水平釜に対して所定間隔を保つ部材を兼用す
ることで、部品点数を増やす必要がない。When cutting the lower thread with the moving knife table during zigzag sewing, it is necessary to keep the moving knife table at a predetermined distance from the horizontal shuttle. Therefore, by allowing the lower surface of the moving knife table to be guided by the loop fall prevention member, the moving knife table is maintained at a predetermined distance from the horizontal shuttle, so that the lower thread can be reliably cut by the moving knife table. . In this way, with the loop fall prevention member,
By using the moving knife table as a member for maintaining a predetermined interval with respect to the horizontal shuttle, it is not necessary to increase the number of parts.
【００１５】[0015]
【発明の実施の形態】以下、本発明に係る実施形態を図
面に基づいて詳細に説明する。なお、以下に説明する各
実施形態において、図１において説明した部材等につい
ては、図中に同一符号あるいは相当符号を付すことによ
り説明を簡略化あるいは省略する。Embodiments of the present invention will be described below in detail with reference to the drawings. In each of the embodiments described below, the members and the like described in FIG. 1 are denoted by the same reference numerals or corresponding reference numerals in the drawings to simplify or omit the description.
【００１６】図１および図２に示すように、本発明に係
る第１実施形態であるジグザグミシンのループ支え装置
10は、上軸11に駆動されて上下方向に往復運動可能な針
棒12と、針棒12に支持されているとともに上糸13を挿通
可能な針14と、針14の下降位置を調整するために針棒12
を振幅させる振幅手段15と、下軸16に駆動されるととも
に回転自在な外釜18と、外釜18に収容されるとともに回
転不能に保持される内釜20と、内釜20に収容されるとと
もに下糸22（図５参照）を巻回したボビン23と、外釜18
の外周面18Ａにおける周方向に突出されて上糸13のルー
プ13Ａ（図４参照）を補足する剣先25とを有する。As shown in FIGS. 1 and 2, a loop supporting device for a zigzag sewing machine according to a first embodiment of the present invention.
The needle 10 is driven by an upper shaft 11 and reciprocates in a vertical direction, a needle 14 supported by the needle bar 12 and capable of inserting an upper thread 13, and a lowering position of the needle 14 is adjusted. Needle bar for 12
An outer hook 18 driven by the lower shaft 16 and rotatable, an inner pot 20 housed in the outer pot 18 and held non-rotatably, and housed in the inner pot 20 A bobbin 23 wound with a lower thread 22 (see FIG. 5)
And a sword tip 25 which is projected in the circumferential direction on the outer peripheral surface 18A of the upper thread 13 to supplement the loop 13A of the upper thread 13 (see FIG. 4).
【００１７】振幅手段15は、図１に示すように針棒12の
上端を支点15Ａで支え、この支点15Ａを軸にして針棒12
を矢印のように左右に振幅する手段である。振幅手段15
によれば、上軸11の駆動により針棒12を上下方向に移動
するとともに、針棒12を左右方向に往復運動させてジグ
ザグ縫いが可能になる。なお、振幅の幅は任意に設定す
ることが可能である。As shown in FIG. 1, the amplitude means 15 supports the upper end of the needle bar 12 at a fulcrum 15A, and the fulcrum 15A serves as an axis.
Is a means for oscillating right and left as indicated by an arrow. Amplitude means 15
According to this, the needle bar 12 is moved up and down by the driving of the upper shaft 11, and the needle bar 12 is reciprocated in the left and right direction to perform zigzag sewing. The width of the amplitude can be set arbitrarily.
【００１８】図２に示すように、内釜20には突起20Ａが
備えられ、この突起20Ａは内釜回転防止部材27の板ばね
部27Ａに当接されている。よって、外釜18が反時計回り
方向（矢印方向）に回転した際に内釜20を静止状態に保
つことができる。なお、内釜回転防止部材27とほぼ対向
する位置に内釜回転防止部材28を備える。As shown in FIG. 2, the inner hook 20 is provided with a projection 20A, which is in contact with a leaf spring portion 27A of the inner hook rotation preventing member 27. Therefore, when the outer shuttle 18 rotates in the counterclockwise direction (the direction of the arrow), the inner shuttle 20 can be kept stationary. Note that an inner hook rotation preventing member 28 is provided at a position substantially opposed to the inner hook rotation preventing member 27.
【００１９】図３に示すように、外釜18には内釜20が載
せられ、この内釜20は外釜18の底部18Bに貼付けられた
マグネット29によって下方に吸引されている。水平釜21
（外釜18および内釜20）の上方には針板30が配置され、
この針板30には針14が挿通される開口31（ほぼ長孔状の
開口）が形成されている。As shown in FIG. 3, an inner pot 20 is placed on the outer pot 18, and the inner pot 20 is attracted downward by a magnet 29 attached to a bottom portion 18B of the outer pot 18. Horizontal pot 21
Needle plate 30 is arranged above (outer pot 18 and inner pot 20),
The needle plate 30 is formed with an opening 31 (a substantially elongated opening) through which the needle 14 is inserted.
【００２０】図２に示すように、針14の近傍には動メス
台35が備えられている。動メス台35は糸切り時に長手方
向（左右方向）に動作して下糸22（図５参照）を糸補足
部36で補足する部材である。この動メス台35には動メス
37が固定され、この動メス37の先端には糸補足部36で補
足した下糸22を切断する刃部38が設けられている。ま
た、動メス台35の先端側で、かつ水平釜21（外釜18およ
び内釜20）の上方には固定刃40が固定され動メス台35が
動作途中に動メス37の刃部38と合致する位置に固定刃部
41が設けられている。As shown in FIG. 2, a moving knife table 35 is provided near the needle 14. The moving knife table 35 is a member that operates in the longitudinal direction (left-right direction) at the time of thread cutting and supplements the lower thread 22 (see FIG. 5) with the thread supplementing section 36. The moving knife table 35 has a moving knife
A knife 37 is provided at the tip of the moving knife 37 for cutting the lower thread 22 supplemented by the thread supplementing section 36. A fixed blade 40 is fixed on the distal end side of the moving knife table 35 and above the horizontal shuttle 21 (the outer shuttle 18 and the inner shuttle 20). Fixed blade at the matching position
41 are provided.
【００２１】針板30の開口縁部31Ａの近傍には、固定刃
40の下方位置でかつ内釜20の上方位置に浮き止め部材42
が備えられている。この浮き止め部材42は、内釜20の上
方に配置されることで内釜20の浮き上がりを防止でき
る。A fixed blade is provided near the opening edge 31A of the needle plate 30.
At a position below 40 and above the inner pot 20, a retaining member 42 is provided.
Is provided. Since the retaining member 42 is disposed above the inner hook 20, the lifting of the inner hook 20 can be prevented.
【００２２】加えて、浮き止め部材42は、固定刃40とと
もに動メス台35を挟み込むように配置されており、動メ
ス台35で下糸22（図５参照）を切る際には、水平釜21
（外釜18および内釜20）に対して所定間隔を保つように
動メス台35を案内できる。In addition, the floating retaining member 42 is arranged so as to sandwich the moving knife table 35 together with the fixed blade 40. When the lower thread 22 (see FIG. 5) is cut by the moving knife table 35, twenty one
The moving knife table 35 can be guided so as to keep a predetermined interval with respect to the (the outer shuttle 18 and the inner shuttle 20).
【００２３】浮き止め部材42の先端42Ａには、ループ倒
れ防止部材43が設けられている。ループ倒れ防止部材43
は、その右側面43Ａが外釜18の回転方向下流側、すなわ
ち開口31の左端に隣接され、かつ右側面43Ａが上糸13の
ループ13Ａ（図４参照）に当接する高さ位置に配置され
ている。The tip 42A of the retaining member 42 is provided with a loop fall prevention member 43. Loop fall prevention member 43
The right side surface 43A is disposed at the downstream side in the rotation direction of the outer shuttle 18, that is, adjacent to the left end of the opening 31, and the right side surface 43A is positioned at a height where the right side surface 43A contacts the loop 13A of the upper thread 13 (see FIG. 4). ing.
【００２４】これにより、針14の下降位置が縫製物の送
り方向左側（すなわち、開口31の左端側）であるとき
に、ループ倒れ防止部材43の右側面43Ａにループ13Ａが
当接することにより、ループ13Ａの挿通方向が剣先25の
突出方向に沿うようにループ13Ａの形状を保つことがで
きる。Thus, when the lowering position of the needle 14 is on the left side in the feed direction of the sewn material (that is, the left end side of the opening 31), the loop 13A comes into contact with the right side surface 43A of the loop fall prevention member 43, The shape of the loop 13A can be maintained so that the insertion direction of the loop 13A is along the protruding direction of the sword tip 25.
【００２５】次に、ジグザグミシンのループ支え装置10
の作用を図４および図５に基づいて説明する。ミシンで
ジグザグ縫いを実施することにより、図４に示すように
針棒12を矢印の方向に上下移動させながら、紙面に直交
する方向（すなわち、左右方向）に振幅させる。針14が
下降位置まで下降してから上昇を開始すると、上糸13に
たるみが発生してループ13Ａを形成する。Next, the loop supporting device 10 for the zigzag sewing machine
Will be described with reference to FIGS. 4 and 5. By performing the zigzag sewing with the sewing machine, the needle bar 12 is moved up and down in the direction of the arrow as shown in FIG. When the needle 14 starts lowering after descending to the lowering position, slack occurs in the upper thread 13 to form a loop 13A.
【００２６】このとき、外釜18（図２参照）の回転でル
ープ13Ａの内側に外釜18の剣先25が進入し、外釜18の剣
先25にループ13Ａが補足される。この状態からさらに外
釜18を回転して上糸13を内釜20（図２参照）に巻回さ
せ、これにより上糸13と下糸22（図５参照）が絡み合
う。At this time, the rotation of the outer hook 18 (see FIG. 2) causes the sword tip 25 of the outer hook 18 to enter the inside of the loop 13A, and the sword tip 25 of the outer hook 18 is supplemented by the loop 13A. From this state, the outer shuttle 18 is further rotated to wind the upper thread 13 around the inner shuttle 20 (see FIG. 2), whereby the upper thread 13 and the lower thread 22 (see FIG. 5) are entangled.
【００２７】ここで、針棒12を振幅させてジグザグ縫い
する際に、針14の下降位置は縫製物の送り方向の右側と
左側とに交互に振られる。針14の下降位置が縫製物の送
り方向の左側の場合（図２に示す針14の位置）には、外
釜18の回転が一定であるため上糸13のループ13Ａを剣先
25が補足するタイミングが遅れる。When the zigzag stitch is performed by oscillating the needle bar 12, the lowering position of the needle 14 is alternately swung to the right and left in the feed direction of the sewing product. When the lowering position of the needle 14 is on the left side in the feed direction of the sewing product (the position of the needle 14 shown in FIG. 2), since the rotation of the outer hook 18 is constant, the loop 13A of the upper thread 13 is pointed to the blade point.
25 supplementary timing is delayed.
【００２８】このため、上糸13のループ13Ａにくずれ
や、捩れが発生しようとするが、このとき上糸13のルー
プ13Ａはループ倒れ防止部材43の右側面43Ａに当接する
ことで、上糸13のループ13Ａにくずれや、捩れが発生す
ることを防止できる。このため、上糸13のループ13Ａに
剣先25を確実に進入させて、上糸13を補足することがで
きるので、ジグザグ縫いの際に目飛びが発生することを
防止できる。For this reason, the loop 13A of the upper thread 13 tends to be broken or twisted. At this time, the loop 13A of the upper thread 13 comes into contact with the right side surface 43A of the loop fall prevention member 43, so that the upper thread 13A It is possible to prevent the loop 13A of the thirteen from being broken or twisted. For this reason, the tip 25 can be reliably inserted into the loop 13A of the upper thread 13 and the upper thread 13 can be supplemented, so that skipping during zigzag stitching can be prevented.
【００２９】ジグザグ縫いが終了した後、図５（Ａ）に
示すように動メス台35を右方向（矢印方向）に動作す
る。これにより、図５（Ｂ）に示すように動メス台35の
糸補足部36で下糸22を補足する。次に、図５（Ｃ）に示
すように動メス台35を左方向（矢印方向）に動作するこ
とにより、図５（Ｄ）に示すように動メス37の刃部38と
固定刃40と固定刃部41とで下糸22を切断する。After the zigzag sewing is completed, the moving knife table 35 is moved rightward (in the direction of the arrow) as shown in FIG. Thereby, the lower thread 22 is supplemented by the thread supplementer 36 of the moving knife table 35 as shown in FIG. Next, by moving the moving knife table 35 to the left (in the direction of the arrow) as shown in FIG. 5C, the blade 38 and the fixed blade 40 of the moving knife 37 are moved as shown in FIG. The lower thread 22 is cut with the fixed blade 41.
【００３０】ここで、浮き止め部材42は、固定刃40とと
もに動メス台35を挟み込むように配置されており、動メ
ス台35で下糸22を切る際には、水平釜21（外釜18および
内釜20）に対して所定間隔を保つように動メス台35を案
内することができる。これにより、動メス37の刃部38と
固定刃40と固定刃部41とで下糸22を切断できる。Here, the retaining member 42 is arranged so as to sandwich the moving knife table 35 together with the fixed blade 40. When the lower thread 22 is cut by the moving knife table 35, the horizontal shuttle 21 (the outer shuttle 18) is used. The moving knife table 35 can be guided so as to keep a predetermined interval with respect to the inner hook 20). Thereby, the lower thread 22 can be cut by the blade 38, the fixed blade 40, and the fixed blade 41 of the moving knife 37.
【００３１】このように、ジグザグ縫いの際に、動メス
台35で下糸22を切る時には、浮き止め部材42で動メス台
35を案内することにより、動メス台35を水平釜に対して
所定間隔を保つことができる。よって、動メス台35で下
糸22を確実に切ることができる。この浮き止め部材42に
ループ倒れ防止部材43を一体に形成することで、部品点
数を増やすことなくループ倒れ防止部材43を得ることが
できる。As described above, when the lower thread 22 is cut by the moving knife table 35 during zigzag sewing, the floating knife member 42
By guiding the 35, the moving knife table 35 can be kept at a predetermined distance from the horizontal shuttle. Therefore, the lower thread 22 can be reliably cut by the moving knife table 35. By forming the loop fall prevention member 43 integrally with the retaining member 42, the loop fall prevention member 43 can be obtained without increasing the number of components.
【００３２】加えて、ジグザグ縫いの際に、図３に示す
外釜18内のマグネット29の吸引力に反して内釜20が外釜
18から浮き上がろうとした時には、浮き止め部材42で内
釜20の浮き上がりを防止することができる。この浮き止
め部材42にループ倒れ防止部材43を一体に形成すること
で、部品点数を増やすことなくループ倒れ防止部材43を
得ることができる。In addition, at the time of zigzag stitching, the inner hook 20 is turned against the outer hook 18 against the attraction force of the magnet 29 in the outer hook 18 shown in FIG.
When trying to float from 18, the lifting member 42 can prevent the inner hook 20 from rising. By forming the loop fall prevention member 43 integrally with the retaining member 42, the loop fall prevention member 43 can be obtained without increasing the number of components.
【００３３】なお、前記実施形態では、外釜18及び内釜
20の構成を水平釜21とした例について説明したが、これ
に限らないで、垂直釜等のその他の釜に適用しても同様
の効果を得ることができる。また、前記実施形態では、
ジグザグ縫いを例に説明したが、これに限らないで、刺
繍縫いや、模様縫い等に適用しても同様の効果を得るこ
とができる。In the above embodiment, the outer pot 18 and the inner pot
Although an example in which the configuration of 20 is a horizontal shuttle 21 has been described, the present invention is not limited to this, and the same effect can be obtained by applying to other shuttles such as a vertical shuttle. In the above embodiment,
Although the zigzag sewing has been described as an example, the present invention is not limited to this, and the same effect can be obtained by applying the present invention to embroidery sewing, pattern sewing, and the like.
【００３４】さらに、前記実施形態では、針棒12を上端
の支点15Ａを軸にして左右に振幅する例について説明し
たが、針棒12を左右に振幅させる手段はこれに限らない
で、例えば針棒12に沿って支持を平行に配置し、この支
軸を軸にして針棒12を左右に振幅することも可能であ
る。Further, in the above-described embodiment, an example has been described in which the needle bar 12 swings right and left around the fulcrum 15A at the upper end. However, the means for swinging the needle bar 12 right and left is not limited to this. It is also possible to arrange the support in parallel along the bar 12 and to swing the needle bar 12 right and left about this support axis.
【００３５】さらに、本発明は、前述した実施形態に限
定されるものでなく、適宜な変形，改良等が可能であ
り、前述した実施形態において例示した下軸，上軸，針
棒，針，外釜，内釜，浮き止め部材，ループ倒れ防止部
材，動メス台等の材質，形状，寸法，形態，数，配置個
所，厚さ寸法等は本発明を達成できるものであれば任意
であり、限定されない。Further, the present invention is not limited to the above-described embodiment, but can be appropriately modified and improved. The lower shaft, upper shaft, needle bar, needle, The material, shape, dimensions, form, number, location, thickness, etc. of the outer pot, inner pot, retaining member, loop fall prevention member, moving knife table, etc. are arbitrary as long as the present invention can be achieved. , But not limited to.
【００３６】[0036]
【発明の効果】以上、説明したように、本発明によれ
ば、請求項１に記載したように、針の下降位置が縫製物
の送り方向左側であるときに、上糸のループの挿通方向
が剣先の突出方向に沿うようにループの姿勢を維持する
ループ倒れ防止部材を設けた。これにより、上糸のルー
プに剣先を確実に進入させて、上糸を補足することがで
きるので、目飛びが発生することを防止できる。As described above, according to the present invention, when the lowering position of the needle is on the left side in the feed direction of the sewn material, the insertion direction of the loop of the upper thread is as described in the first aspect. Provided a loop fall prevention member for maintaining the posture of the loop along the projecting direction of the sword tip. This allows the tip of the sword to reliably enter the loop of the upper thread and to supplement the upper thread, thereby preventing the occurrence of skipping.
【００３７】請求項２は、浮き止め部材で、外釜内のマ
グネットの吸引力に反して内釜が外釜から浮き上がろう
とした時に、内釜の浮き上がりを防止できる。加えて、
この浮き止め部材にループ倒れ防止部材を一体に形成す
ることで、部品点数を増やすことなくループ倒れ防止部
材を得ることができる。A second aspect of the present invention is a retaining member, which can prevent the inner shuttle from lifting when the inner shuttle attempts to float from the outer shuttle against the attraction of the magnet in the outer shuttle. in addition,
By forming the loop fall prevention member integrally with the retaining member, the loop fall prevention member can be obtained without increasing the number of components.
【００３８】請求項３は、ジグザグ縫いの際に、ループ
倒れ防止部材で動メス台の下面を案内可能とすること
で、動メス台を水平釜に対して所定間隔を保ち、動メス
台で下糸を確実に切ることができるようにした。このよ
うに、ループ倒れ防止部材で、動メス台を水平釜に対し
て所定間隔を保つ部材を兼用することで、部品点数を増
やすことなくループ倒れ防止部材を得ることができる。According to a third aspect of the present invention, at the time of zigzag sewing, the lower surface of the moving knife table can be guided by the loop fall prevention member, so that the moving knife table is kept at a predetermined distance from the horizontal shuttle. The lower thread can be cut reliably. In this way, by using the moving knife table as a member that keeps a predetermined distance from the horizontal shuttle as the loop fall prevention member, the loop fall prevention member can be obtained without increasing the number of parts.
【図１】本発明に係るジグザグミシンのループ支え装置
を備えたミシンを示す側面図である。FIG. 1 is a side view showing a sewing machine provided with a loop support device for a zigzag sewing machine according to the present invention.
【図２】本発明に係るジグザグミシンのループ支え装置
を示す平面図である。FIG. 2 is a plan view showing a loop supporting device of the zigzag sewing machine according to the present invention.
【図３】本発明に係るジグザグミシンのループ支え装置
を示す断面図である。FIG. 3 is a cross-sectional view illustrating a loop supporting device of the zigzag sewing machine according to the present invention.
【図４】本発明に係るジグザグミシンのループ支え装置
の作用を示す説明図である。FIG. 4 is an explanatory view showing the operation of the loop supporting device of the zigzag sewing machine according to the present invention.
【図５】本発明に係るジグザグミシンのループ支え装置
の作用を示す説明図である。FIG. 5 is an explanatory view showing the operation of the loop supporting device of the zigzag sewing machine according to the present invention.
【図６】従来のジグザグミシンのループ支え装置を示す
平面図である。FIG. 6 is a plan view showing a conventional loop support device of a zigzag sewing machine.
【図７】従来のジグザグミシンのループ支え装置の作用
を示す説明図である。FIG. 7 is an explanatory view showing an operation of a conventional loop support device of a zigzag sewing machine.
【図８】従来のジグザグミシンのループ支え装置の作用
を示す説明図である。FIG. 8 is an explanatory view showing an operation of a conventional loop support device of a zigzag sewing machine.
10 ジグザグミシンのループ支え装置 11 下軸 12 針棒 13 上糸 13Ａ 上糸のループ外釜 14 針 16 上軸 18 外釜 18Ａ 外周面 20 内釜 22 下糸 23 ボビン 25 剣先 31Ａ 開口縁部 35 動メス台 36 糸補足部 42 浮き止め部材 42Ａ 浮き止め部材の先端 43 ループ倒れ防止部材 10 Loop supporting device for zigzag sewing machine 11 Lower shaft 12 Needle bar 13 Upper thread 13A Upper thread loop outer shuttle 14 Needle 16 Upper spindle 18 Outer shuttle 18A Outer peripheral surface 20 Inner shuttle 22 Lower thread 23 Bobbin 25 Sword point 31A Opening edge 35 Move Knife table 36 Thread supplement section 42 Floating stop member 42A Tip of the floating stop member 43 Loop fall prevention member
Claims (3)
能な針棒と、前記針棒に支持されているとともに上糸を
挿通可能な針と、前記針棒を布送り方向との交差方向に
振幅させる振幅手段と、 下軸に駆動されるとともに回転自在な外釜と、前記外釜
に収容されるとともに回転不能に保持される内釜と、前
記内釜に収容されるとともに下糸を巻回したボビンと、
前記外釜の外周面における周方向に突出されて前記上糸
のループを補足する剣先とを有するジグザグミシンのル
ープ支え装置であって、 前記針の針振り位置が外釜回転方向下流側であるとき
に、前記ループの挿通方向が前記剣先の突出方向に沿う
ように前記ループの姿勢を維持するループ倒れ防止部材
が設けられていることを特徴とするジグザグミシンのル
ープ支え装置。1. A needle bar driven by an upper shaft and capable of reciprocating up and down, a needle supported by the needle bar and capable of inserting an upper thread, and an intersection of the needle bar with a cloth feeding direction. Amplitude means for oscillating in the direction, an outer shuttle driven and rotatable by a lower shaft, an inner shuttle stored in the outer shuttle and held non-rotatably, and a lower thread accommodated in the inner shuttle. Bobbin wound with
A zigzag sewing machine loop support device having a tip that is circumferentially projected on an outer peripheral surface of the outer hook and supplements a loop of the upper thread, wherein a needle swing position of the needle is a downstream side in the outer hook rotation direction. A loop supporting device for a zigzag sewing machine, wherein a loop fall prevention member for maintaining a posture of the loop is provided so that an insertion direction of the loop is along a projecting direction of the sword tip.
を防止するために前記外釜の開口縁部に設けられた浮き
止め部材を有し、 前記ループ倒れ防止部材が前記浮き止め部材の先端に設
けられていることを特徴とする請求項１に記載したジグ
ザグミシンのループ支え装置。2. A lifting member provided at an opening edge of the outer hook to prevent the inner hook from lifting up with respect to the outer hook. The loop support device for a zigzag sewing machine according to claim 1, wherein the loop support device is provided at a distal end.
設けられた動メス台を有し、 前記ループ倒れ防止部材が前記動メス台の下面を案内可
能であることを特徴とする請求項１に記載したジグザグ
ミシンのループ支え装置。3. A moving knife table provided with a thread catching section for cutting the lower thread, wherein the loop fall prevention member is capable of guiding a lower surface of the moving knife table. A loop supporting device for a zigzag sewing machine according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001164305A JP2002355480A (en) | 2001-05-31 | 2001-05-31 | Loop supporting device for zigzag sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001164305A JP2002355480A (en) | 2001-05-31 | 2001-05-31 | Loop supporting device for zigzag sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002355480A true JP2002355480A (en) | 2002-12-10 |
Family
ID=19007148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001164305A Pending JP2002355480A (en) | 2001-05-31 | 2001-05-31 | Loop supporting device for zigzag sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002355480A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015216969A (en) * | 2014-05-14 | 2015-12-07 | アイシン精機株式会社 | sewing machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61288891A (en) * | 1985-06-14 | 1986-12-19 | 蛇の目ミシン工業株式会社 | Yarn loop catching apparatus in zigzag sewing machine |
| JPH05228290A (en) * | 1992-02-22 | 1993-09-07 | Brother Ind Ltd | Sewing machine with automatic thread cutting mechanism |
| JPH078667A (en) * | 1993-06-29 | 1995-01-13 | Pegasus Sewing Mach Mfg Co Ltd | Multi-thread chain stitch machine |
| JPH0956951A (en) * | 1995-08-29 | 1997-03-04 | Nara Sewing Mach Kogyo Kk | Thread falling preventing device of sewing machine |
-
2001
- 2001-05-31 JP JP2001164305A patent/JP2002355480A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61288891A (en) * | 1985-06-14 | 1986-12-19 | 蛇の目ミシン工業株式会社 | Yarn loop catching apparatus in zigzag sewing machine |
| JPH05228290A (en) * | 1992-02-22 | 1993-09-07 | Brother Ind Ltd | Sewing machine with automatic thread cutting mechanism |
| JPH078667A (en) * | 1993-06-29 | 1995-01-13 | Pegasus Sewing Mach Mfg Co Ltd | Multi-thread chain stitch machine |
| JPH0956951A (en) * | 1995-08-29 | 1997-03-04 | Nara Sewing Mach Kogyo Kk | Thread falling preventing device of sewing machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015216969A (en) * | 2014-05-14 | 2015-12-07 | アイシン精機株式会社 | sewing machine |
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