JP2763675B2 - Sewing machine looper - Google Patents
Sewing machine looperInfo
- Publication number
- JP2763675B2 JP2763675B2 JP2310938A JP31093890A JP2763675B2 JP 2763675 B2 JP2763675 B2 JP 2763675B2 JP 2310938 A JP2310938 A JP 2310938A JP 31093890 A JP31093890 A JP 31093890A JP 2763675 B2 JP2763675 B2 JP 2763675B2
- Authority
- JP
- Japan
- Prior art keywords
- looper
- thread
- needle
- sewing machine
- locus
- 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.)
- Expired - Fee Related
Links
- 238000009958 sewing Methods 0.000 title claims description 42
- 239000004744 fabric Substances 0.000 claims description 12
- 238000009964 serging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B87/00—Needle- or looper- threading devices
Landscapes
- Sewing Machines And Sewing (AREA)
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明はミシンのルーパに係わり、特に、縁かがりミ
シンおよび二重環縫いミシンのルーパに関する。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a looper for a sewing machine, and more particularly to a looper for an overlock sewing machine and a double chain stitch sewing machine.
［従来の技術および発明が解決しようとする課題］ 第４図に示すように、縁かがりオーバーロックミシン
は、主軸と同期して実質的に上下運動する針棒７に固定
され布送り方向に傾斜して針板４を貫通して実質的に上
下運動する針１と、針板４の下側で針１の軌跡と交叉す
るように円弧状の軌跡を描いて往復運動する下ルーパ
３′と、針板４の側方で下ルーパ３′の軌跡と交叉する
とともに針板４の上側で針１の軌跡と交叉するように楕
円弧状の軌跡を描いて往復運動する上ルーパと２′を備
え、針１に挿通される針糸と、下ルーパ３′に挿通され
た下ルーパ糸3aと、上ルーパ２′に挿通された上ルーパ
糸2aとを交叉して布に縫いを形成する１本針３本糸オー
バーロックミシンである。[Problems to be Solved by the Prior Art and the Invention] As shown in FIG. 4, the overlocking overlock sewing machine is fixed to a needle bar 7 which moves substantially up and down in synchronization with a main shaft and is inclined in a cloth feeding direction. A needle 1 which penetrates the needle plate 4 and moves up and down substantially, and a lower looper 3 'which reciprocates in a circular locus so as to intersect with the locus of the needle 1 below the needle plate 4. An upper looper and 2 'which reciprocate in a trajectory of an elliptical arc so as to intersect with the locus of the lower looper 3' on the side of the needle plate 4 and intersect with the locus of the needle 1 above the needle plate 4. A needle thread inserted through the needle 1, a lower looper thread 3a inserted through the lower looper 3 ', and an upper looper thread 2a inserted through the upper looper 2' to form a stitch on the cloth. This is a three-needle overlock sewing machine.
このオーバーロックミシンは針板４上で、針１と上ル
ーパ２′とが交叉して針１が上ルーパ糸2aをすくい、布
の端部で上ルーパ２′と下ルーパ３′とが交叉して上ル
ーパ２′が下ルーパ糸3aをすくい、針板４の下で針１と
下ルーパ３′とが交叉して下ルーパ３′が針糸（図示せ
ず）をすくうことによって布５の端部にかがり縫いを形
成し、布５の端部の織糸のほつれを防止するものであ
る。In this overlock sewing machine, the needle 1 and the upper looper 2 'intersect on the needle plate 4, the needle 1 scoops the upper looper thread 2a, and the upper looper 2' and the lower looper 3 'intersect at the end of the cloth. Then, the upper looper 2 'scoops the lower looper thread 3a, the needle 1 and the lower looper 3' intersect under the needle plate 4, and the lower looper 3 'scoops the needle thread (not shown). Is formed at the end of the cloth 5 to prevent the end of the cloth 5 from fraying.
ところで、第５図に示すように、上ルーパ２′にはそ
の剣先2A付近に上ルーパ糸2aを引出す糸出口として糸穴
2bが孔窃され、上ルーパ糸案内21に案内された上ルーパ
糸2aが挿通される。By the way, as shown in FIG. 5, the upper looper 2 'has a thread hole as a thread outlet for drawing out the upper looper thread 2a near the point 2A.
2b is stolen, and the upper looper thread 2a guided by the upper looper thread guide 21 is inserted.
また、同図に示すように、下ルーパ３′にはその剣先
3A付近に下ルーパ糸3aを引出す糸出口として糸穴3bが孔
窃され、途中の下ルーパ糸3aが邪魔にならないよう糸保
持部3Bには糸溝3cを切り、ルーパ後部3Cに糸案内3dを設
ける。下ルーパ糸案内32に案内された下ルーパ糸3aは、
下ルーパ糸案内31に懸装され、次に、ルーパ後部3Cの糸
案内3dに懸装され、剣先3Aの糸穴3bに挿通される。ルー
パ後部3Cの糸案内3dから糸穴3bの間の下ルーパ糸3aは糸
溝3cに収納され拘持される。Also, as shown in FIG.
The yarn hole 3b is stolen as a yarn outlet for drawing out the lower looper yarn 3a near 3A, the yarn groove 3c is cut in the yarn holding portion 3B so that the lower looper yarn 3a does not interfere, and the yarn guide 3d is provided in the looper rear portion 3C. Is provided. The lower looper thread 3a guided by the lower looper thread guide 32 is
It is suspended by the lower looper thread guide 31 and then suspended by the thread guide 3d of the looper rear part 3C, and is inserted through the thread hole 3b of the blade point 3A. The lower looper thread 3a between the thread guide 3d and the thread hole 3b of the looper rear portion 3C is housed in and held by the thread groove 3c.
上述のような従来の上下ルーパ２′、３′における、
上ルーパの糸穴2bおよび下ルーパの糸穴3bへの糸の挿通
作業、ルーパ後部3Cの糸案内3dへの糸の懸装、糸溝3cへ
の下ルーパ糸3aの収納等はピンセットを用いる細かい作
業であった。また、ルーパ部の糸の通し方は、第５図に
示す通り複雑なため、糸通しの順番（例えば縁かがりオ
ーバーロックミシンの場合、上ルーパ糸下ルーパ糸
針糸の順に通さねばならない）を間違えて、縫い初め
糸切れ、針折れなどのトラブルを発生させる。更に、下
ルーパ糸3aの糸保持部3Bに設けられた糸溝3cは前面が開
放状態であるため、収納された下ルーパ糸3aが糸溝3cか
ら垂下して他の糸とからんでトラブルを発生させる。ま
た、ルーパ２′、３′は針板４下の狭い部分に取り付け
られているため、指先やピンセットを近づけにくく、特
に奥まった箇所にある下ルーパ３′の下ルーパ糸案内3d
や下ルーパ３′の糸穴3bへの糸の挿通作業には熟練を要
する。未熟練者は正常に糸を通せなかったり、糸通しに
長時間かかるため作業中止時間が長くなり、復旧時の糸
通しによる糸絡みで、再糸切れを発生させることも多
い。In the conventional upper and lower loopers 2 ', 3' as described above,
Tweezers are used to insert the thread into the thread hole 2b of the upper looper and the thread hole 3b of the lower looper, suspend the thread in the thread guide 3d in the rear part 3C of the looper, and store the lower looper thread 3a in the thread groove 3c. It was a detailed work. In addition, since the threading of the looper section is complicated as shown in FIG. 5, the threading order (for example, in the case of the overlock sewing machine, the upper looper thread and the lower looper thread must be threaded in order). Incorrectly, troubles such as thread breakage and needle breakage at the sewing start may occur. Further, since the yarn groove 3c provided in the yarn holding portion 3B of the lower looper yarn 3a has an open front surface, the stored lower looper yarn 3a hangs down from the yarn groove 3c and becomes tangled with other yarns, causing trouble. generate. Further, since the loopers 2 'and 3' are attached to a narrow portion below the needle plate 4, it is difficult to bring fingertips and tweezers close to each other.
Skill is required to insert the thread into the thread hole 3b of the lower looper 3 '. An unskilled person cannot pass the thread normally or takes a long time to thread, so that the work suspension time is prolonged, and thread retangling due to threading at the time of recovery often causes re-thread breakage.
このような不都合を防ぐため、糸通し器、糸通し装置
が使われたり（例えば、特開平１−303194号公報）、ル
ーパ駆動部にクラッチを設け、その切換えによりルーパ
を倒して糸通しを容易にする方法が取られていたが、糸
通し器、糸通し装置は高価で、動作が不安定で、操作に
技術を要すること、また、糸通し装置の使い方がオペレ
ータに理解されにくく、誤操作によるミシンの破損が発
生する等の難点があった。In order to prevent such inconveniences, a threading device or a threading device is used (for example, JP-A-1-303194), or a clutch is provided in a looper drive unit, and the looper is tilted by switching the looper to facilitate threading. However, threading devices and threading devices are expensive, unstable in operation, require skill in operation, and it is difficult for the operator to understand how to use the threading device. There were difficulties such as breakage of the sewing machine.
［発明の目的］ 本発明は上記の難点を解決するためになされたもの
で、針板下の狭い部分に取り付けられているルーパへの
糸通しを容易にし、未熟練者でも縫い始めおよび再縫製
の縫い始めのトラブルがなく、作業中止時間を短縮でき
るミシンのルーパを提供することを目的とする。[Object of the Invention] The present invention has been made in order to solve the above-mentioned difficulties, and makes it easy to thread a looper attached to a narrow portion below a needle plate, so that even an unskilled person can start sewing and re-sewing. An object of the present invention is to provide a looper for a sewing machine that can eliminate the trouble at the start of sewing and can reduce the time for stopping work.
［課題を解決するための手段］ このような目的を達成するため、本発明のミシンのル
ーパは、主軸と同期して上下運動する針棒に固定され針
板を貫通して上下運動する針と、針の軌跡と交叉するよ
うに円弧状の軌跡を描いて往復運動するルーパとを備
え、針に挿通される針糸と、ルーパに挿通されたルーパ
糸とを交叉して布に縫いを形成するミシンのルーパであ
って、ルーパは、ルーパの糸導入口から剣先糸出口まで
ルーパ糸を挿通するのに適した管部材及び管部材を篏合
する溝で形成したものである。Means for Solving the Problems In order to achieve such an object, a looper of a sewing machine according to the present invention is provided with a needle fixed to a needle bar that moves up and down in synchronization with a main shaft and that moves up and down through a needle plate. A looper that reciprocates in an arc-shaped trajectory so as to intersect with the trajectory of the needle. The needle thread inserted through the needle and the looper thread inserted through the looper intersect to form sewing on the cloth. The looper is formed by a pipe member suitable for inserting a looper thread from a thread inlet of the looper to an outlet of a pointed thread, and a groove for fitting the pipe member.
また、本発明のミシンのルーパは、主軸と同期して上
下運動する針棒に固定され針板を貫通して上下運動する
針と、針の軌跡と交叉するように円弧状の軌跡を描いて
往復運動するルーパとを備え、針に挿通される針糸と、
ルーパに挿通されたルーパ糸とを交叉して布に縫いを形
成するミシンのルーパであって、ルーパは、ルーパの糸
導入口から剣先糸出口までルーパ糸を挿通するのに適し
た溝及び溝を被覆する蓋部材で形成したものである。Further, the looper of the sewing machine of the present invention draws an arc-shaped locus so as to intersect with the needle which is fixed to the needle bar which moves up and down synchronously with the main shaft and which moves up and down through the needle plate, and intersects with the locus of the needle. A needle thread that has a looper that reciprocates and is inserted through the needle,
A looper of a sewing machine that forms a stitch on a cloth by crossing a looper thread inserted into a looper and forming a stitch on a cloth, wherein the looper is a groove and a groove suitable for inserting a looper thread from a thread introduction port of the looper to a sword end thread outlet. Is formed with a lid member for covering the above.
これらのミシンのルーパにおいて、ルーパの糸導入口
は拡開状に形成される。In these sewing machine loopers, the thread introduction port of the looper is formed in an expanded shape.
［実施例］ 以下、本発明のミシンのルーパをその好ましい実施例
について図面を参照して詳述する。Hereinafter, a preferred embodiment of a looper of a sewing machine according to the present invention will be described in detail with reference to the drawings.
第１図に示すように、本発明のミシンの下ルーパ３
は、その糸導入口3Dから剣先3Aの糸出口まで下ルーパ糸
3aを挿通するのに適した中空構造である。同様に、本発
明のミシンの上ルーパ２も、その糸導入口2Dから剣先2A
の糸出口まで上ルーパ糸2aを挿通するのに適した中空構
造である。As shown in FIG. 1, the lower looper 3 of the sewing machine of the present invention is used.
Is the lower looper thread from the thread inlet 3D to the thread outlet of the point 3A.
Hollow structure suitable for inserting 3a. Similarly, the upper looper 2 of the sewing machine of the present invention also has a
Is a hollow structure suitable for inserting the upper looper yarn 2a to the yarn outlet of the upper looper.
実施例−１ 中空構造としては、第２図（ｂ）に示すように、上ル
ーパ２は、糸導入口2Dから剣先2Aの糸出口までルーパ糸
（図示せず）を挿通するのに適したパイプ状の中空部材
より作られている。同様に下ループ３も、第２図（ａ）
に示すように、糸導入口3Dから剣先3Aの糸出口までルー
パ糸（図示せず）を挿通するのに適したパイプ状の中空
部材より作られている。Example-1 As a hollow structure, as shown in FIG. 2 (b), the upper looper 2 is suitable for inserting a looper thread (not shown) from the thread inlet 2D to the thread outlet of the blade point 2A. It is made of a pipe-shaped hollow member. Similarly, the lower loop 3 is shown in FIG.
As shown in the figure, the pipe is formed of a pipe-shaped hollow member suitable for inserting a looper thread (not shown) from the thread inlet 3D to the thread outlet of the blade point 3A.
実施例−２ 中空構造の他の実施例としては、第３図（ａ）、
（ｂ）に示すように、下ルーパ30は、糸導入口3D′から
糸出口3A′まで下ルーパ糸3aを挿通するのに適した管部
材であるパイプ3f、およびパイプ3fを篏合する溝3e（第
３図（ｃ）参照）で形成される。Embodiment 2 As another embodiment of the hollow structure, FIG.
(B), the lower looper 3 0, pipe 3f a tube member adapted to insert the lower looper thread 3a 'from the thread outlet 3A' thread entrances 3D to, and the pipe 3f to篏合It is formed by a groove 3e (see FIG. 3 (c)).
実施例−３ あるいは、中空構造の他の実施例として、第３図
（ｃ）に示すように、下ルーパ31は、ルーパの糸導入口
から剣先糸出口までルーパ糸を挿通するのに適した溝3e
及びこの溝3eを被覆する蓋部材3gで形成される。Example -3 or, as another example of a hollow structure, as shown in FIG. 3 (c), the lower looper 3 1, suitable for inserting the looper thread from the thread inlet of the looper to taker point thread exit Groove 3e
And a lid member 3g that covers the groove 3e.
実施例−１、実施例−２および実施例−３の各タイプ
において、上ルーパ２、下ルーパ３ともにそれぞれの糸
導入口は、ルーパ糸の導入に適した拡開状即ち、ラッパ
状に形成される（第２図（ａ）、第２図（ｂ）、第３図
（ｄ）、（ｅ））。In each of Examples 1, 2, and 3, each of the upper looper 2 and the lower looper 3 has a yarn inlet formed in an expanded shape suitable for introducing a looper yarn, that is, in a trumpet shape. (FIGS. 2 (a), 2 (b), 3 (d), (e)).
尚、オーバーロックミシン本体は、第１図に示すよう
に、主軸８と同期して上下運動する針棒７（第４図）に
固定され布送り方向に傾斜して針板４を貫通して上下運
動する針１と、針板４の下側で針１の軌跡と交叉するよ
うに円弧状の軌跡を描いて往復運動する下ルーパ３と、
針板４の側方で下ルーパ３の軌跡と交叉するとともに針
板４の上側で針１の軌跡と交叉するように楕円弧状の軌
跡を描いて往復運動する上ルーパと２を備え、針１に挿
通される針糸と、下ルーパ３に挿通された下ルーパ糸3a
と、上ルーパ２に挿通された上ルーパ糸2aとを交叉して
布に縫いを形成するものである。As shown in FIG. 1, the overlock sewing machine main body is fixed to a needle bar 7 (FIG. 4) which moves up and down in synchronization with the main shaft 8 and is inclined in the cloth feeding direction and penetrates the needle plate 4. A needle 1 that moves up and down, a lower looper 3 that reciprocates in a circular locus so as to intersect the locus of the needle 1 below the needle plate 4,
An upper looper (2) that reciprocates along a locus of the lower looper (3) on the side of the needle plate (4) and draws an elliptical arc-shaped locus on the upper side of the needle plate (4) so as to cross the locus of the needle (1); Needle thread inserted through the lower looper thread 3a inserted through the lower looper 3
And the upper looper thread 2a inserted into the upper looper 2 to form a stitch on the cloth.
［発明の作用］ 上記の用に構成された本発明によるミシンのルーパの
動作を以下に説明する。[Operation of the Invention] The operation of the looper of the sewing machine according to the present invention configured as described above will be described below.
パイプ状の中空部材から構成されるルーパにおいて
は、第１図に示すように、下ルーパ糸案内32に案内され
た下ルーパ糸3aを、糸通し器９（第２図（ｃ））の保持
穴9aに通し、この糸通し器９を下ルーパ３の糸導入口3D
より差込み、下ルーパ３の剣先3A側の出口より突出する
糸通し器９を引出すことにより、一度に糸通しは完了す
る。As shown in FIG. 1, in a looper composed of a pipe-shaped hollow member, a lower looper thread 3a guided by a lower looper thread guide 32 is held by a threader 9 (FIG. 2 (c)). The threader 9 is passed through the hole 9a and the thread introduction port 3D of the lower looper 3 is inserted.
The threading is completed by pulling out the threading device 9 that is inserted into the lower looper 3 and protrudes from the outlet of the lower looper 3 on the blade tip 3A side.
溝3eとパイプ3fから構成されるルーパにおいては、下
ルーパ糸案内32に案内された下ルーパ糸3aを糸通し器９
に通し、この糸通し器９をパイプ3fの糸導入口3D′より
差込み、パイプ3fの出口3A′より突出する糸通し器９を
引出す。In the looper composed of the groove 3e and the pipe 3f, the lower looper thread 3a guided by the lower looper thread guide 32 passes through the threader 9
The threader 9 is inserted through the thread inlet 3D 'of the pipe 3f, and the threader 9 protruding from the outlet 3A' of the pipe 3f is pulled out.
溝3eと蓋部材3gから構成されるルーパにおいては、溝
3eに蓋部材3gを取付け、下ルーパ糸案内32に案内された
下ルーパ糸3aを糸通し器９に通し、この糸通し器９を溝
3eの糸導入口より差込み、溝3eの出口より突出する糸通
し器９を引出す。In the looper composed of the groove 3e and the lid member 3g, the groove
A cover member 3g is attached to 3e, the lower looper thread 3a guided by the lower looper thread guide 32 is passed through the threader 9, and the threader 9 is grooved.
The threader 9 that is inserted from the thread inlet of 3e and protrudes from the outlet of the groove 3e is pulled out.
尚、ここでは下ルーパ３を例に動作を設計したが、上
ルーパの動作も同様である。Here, the operation is designed using the lower looper 3 as an example, but the operation of the upper looper is the same.
本発明によるミシンのルーパは、縁かがりオーバーロ
ックミシンに限定されず、二重環縫いミシンのルーパに
も同様に好適である。The looper of the sewing machine according to the invention is not limited to an overlocking overlock sewing machine, but is likewise suitable for a looper of a double chain stitch sewing machine.
［発明の効果］ 以上の実施例からも明らかなように、本発明によるミ
シンのルーパでは、上ルーパおよび他ルーパの少なくと
も一方は、ルーパの糸導入口から剣先糸出口までルーパ
糸を挿通するのに適した中空構造であるため、各ルーパ
の糸穴が１ヵ所になり、糸通しを間違えることがなくな
り、また途中で糸がはみ出さないため、挿通されたルー
パ糸は他の糸とからむことなく、初心者でも非常に簡単
に正常に通せるようになり、オペレータが理解しやす
く、操作に技術を必要とせず、誤操作によるミシンの破
損がない。[Effects of the Invention] As is apparent from the above embodiments, in the looper of the sewing machine according to the present invention, at least one of the upper looper and the other looper passes the looper thread from the thread inlet of the looper to the outlet of the pointed thread. Since the hollow structure is suitable for the looper, there is only one thread hole in each looper, so there is no mistake in threading, and since the thread does not protrude on the way, the inserted looper thread must be entangled with other threads. In addition, even beginners can pass through the machine very easily and easily, the operator can easily understand, does not require any skill in operation, and there is no breakage of the sewing machine due to erroneous operation.
更に、糸通しの順番がなくなり、ミシン１回転中どの
位置でも糸御通しができ、縫製中の糸切れ時でも、他の
糸を外すことなく糸通しができるため復旧には特別な技
術を必要とせず、短時間であり、通した糸が絡まないの
で、再糸切れは発生しない。特別な糸通し装置が不要で
低廉なミシンが提供でき、かつ安い糸通し器が使える。Furthermore, the threading order is eliminated, threading can be performed at any position during one rotation of the sewing machine, and even if the thread breaks during sewing, threading can be performed without removing another thread. It is a short time, and the thread passed through is not entangled, so that re-thread breakage does not occur. No special threading device is required, an inexpensive sewing machine can be provided, and a cheap threader can be used.
第１図は本発明のミシンのルーパを適応したオーバーロ
ックミシンのルーパ部の説明図、第２図（ａ）は下ルー
パの中空構造説明図、第２図（ｂ）は上ルーパの中空構
造説明図、第２図（ｃ）は糸通しを示す図、第３図
（ａ）、（ｂ）、（ｃ）は下ルーパの中空構造を示す他
の実施例の説明図、第３図（ｄ）、（ｅ）はルーパの糸
導入口の拡開状を示す図、第４図はオーバーロックミシ
ンの斜視図、第５図はそのルーパ部の拡大説明図であ
る。 １……針 2,2′……上ルーパ 2A……上ルーパ剣先 2a……上ルーパ糸 2b……糸穴 2D……上ルーパ糸導入口 21……上ルーパ糸案内 ３、３′、30、31……下ルーパ 3A……下ルーパ剣先 3B……糸保持部 3a……下ルーパ糸 3b……糸穴 3c……糸溝 3d……糸案内 3e……溝 3f……パイプ 3g……蓋部材 3C……ルーパ後部 3D、3D′……下ルーパ糸導入口 31、32……下ルーパ糸案内 ４……針板 ５……布 ７……針棒 ８……主軸 ９……糸通し 9a……保持穴FIG. 1 is an explanatory view of a looper portion of an overlock sewing machine to which the looper of the sewing machine of the present invention is applied, FIG. 2 (a) is an explanatory view of a hollow structure of a lower looper, and FIG. 2 (b) is a hollow structure of an upper looper. FIG. 2 (c) is a view showing threading, FIGS. 3 (a), (b) and (c) are explanatory views of another embodiment showing a hollow structure of a lower looper, FIG. 3 ( FIGS. 4D and 4E are views showing the expanded state of the thread introduction port of the looper, FIG. 4 is a perspective view of the overlock sewing machine, and FIG. 5 is an enlarged explanatory view of the looper section. 1 Needle 2, 2 '... Upper looper 2A ... Upper looper blade tip 2a ... Upper looper thread 2b ... Thread hole 2D ... Upper looper thread inlet 21 ... Upper looper thread guide 3, 3', 3 0 , 3 1 … Lower looper 3A… Lower looper tip 3B… Thread holder 3a… Lower looper thread 3b… Thread hole 3c… Thread groove 3d… Thread guide 3e… Groove 3f… Pipe 3g ... Lid member 3C ... Looper rear part 3D, 3D '... Lower looper thread introduction port 31, 32 ... Lower looper thread guide 4 ... Needle plate 5 ... Clothing 7 ... Needle bar 8 ... Spindle 9 ... Threader 9a …… Holding hole
Claims (3)
れ針板を貫通して上下運動する針と、前記針の軌跡と交
叉するように円弧状の軌跡を描いて往復運動するルーパ
とを備え、前記針に挿通される針糸と、前記ルーパに挿
通されたルーパ糸とを交叉して布に縫いを形成するミシ
ンのルーパであって、前記ルーパは、前記ルーパの糸導
入口から剣先糸出口まで前記ルーパ糸を挿通するのに適
した管部材及び前記管部材を篏合する溝で形成したこと
を特徴とするミシンのルーパ。1. A needle fixed to a needle bar which moves up and down in synchronization with a main shaft and which moves up and down through a needle plate, and a looper which reciprocates in an arc-like locus so as to intersect with the locus of the needle. A sewing machine looper that crosses a needle thread inserted through the needle and a looper thread inserted through the looper to form a sewing on a cloth, wherein the looper is a thread inlet of the looper. A looper for a sewing machine, comprising: a pipe member suitable for inserting the looper thread from a sword to a sword end thread outlet; and a groove for fitting the pipe member.
れ針板を貫通して上下運動する針と、前記針の軌跡と交
叉するように円弧状の軌跡を描いて往復運動するルーパ
とを備え、前記針に挿通される針糸と、前記ルーパに挿
通されたルーパ糸とを交叉して布に縫いを形成するミシ
ンのルーパであって、前記ルーパは、前記ルーパの糸導
入口から剣先糸出口まで前記ルーパ糸を挿通するのに適
した溝及び前記溝を被覆する蓋部材で形成したことを特
徴とするミシンのルーパ。2. A needle fixed to a needle bar which moves up and down in synchronization with a main shaft and which moves up and down through a needle plate, and a looper which reciprocates in an arc-like locus so as to intersect with the locus of the needle. A sewing machine looper that crosses a needle thread inserted through the needle and a looper thread inserted through the looper to form a sewing on a cloth, wherein the looper is a thread inlet of the looper. A looper for a sewing machine, comprising: a groove suitable for inserting the looper thread from the sword to the tip of a sword, and a lid member covering the groove.
ることを特徴とする請求項１、請求項２のうち何れか１
項記載のミシンのルーパ。3. The loop introduction device according to claim 1, wherein the thread introduction port of the looper is formed in an expanded shape.
The looper of the sewing machine described in the item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2310938A JP2763675B2 (en) | 1990-11-16 | 1990-11-16 | Sewing machine looper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2310938A JP2763675B2 (en) | 1990-11-16 | 1990-11-16 | Sewing machine looper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04180796A JPH04180796A (en) | 1992-06-26 |
| JP2763675B2 true JP2763675B2 (en) | 1998-06-11 |
Family
ID=18011197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2310938A Expired - Fee Related JP2763675B2 (en) | 1990-11-16 | 1990-11-16 | Sewing machine looper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2763675B2 (en) |
-
1990
- 1990-11-16 JP JP2310938A patent/JP2763675B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04180796A (en) | 1992-06-26 |
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