JP2591699Y2 - Needle plate of 2-needle overlock sewing machine - Google Patents

Description

【考案の詳細な説明】[Detailed description of the invention]

【０００１】[0001]

【産業上の利用分野】本考案は、生地の送り方向に並ぶ
２本の針を備えたオーバロックミシンに装備される針板
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle plate mounted on an overlock sewing machine having two needles arranged in the direction in which the cloth is fed.

【０００２】[0002]

【従来の技術】縁かがり縫いを行うためのオーバロック
ミシンの多くは、相互に重ね合わせた生地の端縁を正し
く揃えて針落ち位置に送り込むべく、針落ち位置の前部
に生地端切断用のメスを備えている。従って、縫い始め
に際しては、生地の先端縁を前記メスの前部に沿わせて
セットし、この状態で縫い動作を始める必要があり、縫
い始め端が針落ち位置に達するまでの間に、針及びルー
パの数回の動作が生じることから、縫い始め端の前部
に、生地を介在させることなく針糸及びルーパ糸が絡み
合ってなる空環が形成される。2. Description of the Related Art Many overlock sewing machines for performing overlock sewing are used to cut a fabric edge in front of a needle drop position in order to properly align the edges of the fabric overlapped with each other and feed the needle to the needle drop position. With a scalpel. Therefore, at the time of starting sewing, it is necessary to set the leading edge of the cloth along the front of the knife and start the sewing operation in this state. In addition, since the looper is operated several times, an empty ring is formed at the front portion of the sewing start end where the needle thread and the looper thread are entangled without intervening the fabric.

【０００３】この空環は、仕上げ状態の美しさを損なう
上、縫い目のほつれを招来することから、縫製を終了し
た後に生地の裏側に折込み、閂止めミシン又は本縫いミ
シンを使用した閂止め作業により始末する必要があり、
縫い終わり側において同様に必要となる閂止め作業と共
に、作業能率の向上を阻害する要因となっている。[0003] Since this hollow ring impairs the beauty of the finished state and causes fraying of the seam, it is folded into the back side of the fabric after finishing the sewing, and is bar-tacked using a bar-tacking sewing machine or a lockstitch sewing machine. Need to be cleaned up,
Along with the bar-tacking work which is also required at the end of sewing, this is a factor that hinders improvement in working efficiency.

【０００４】そこで従来から、オーバロックミシンにお
いては、縫い終わり端に適長の空環を形成して先行生地
の縫製を終え、この空環を針落ち位置の前側、即ち、生
地の送り込み側に回して適宜に切断して保持させてお
き、この状態で次なる生地の縫製を開始する返し縫いが
行われている。この返し縫いを実施した場合、先行生地
の縫製後に前述の如く保持させた空環は、次生地の縫い
始め端の前部に形成される空環と共に、正規の縫い目中
に自動的に縫い込まれ、縫い始め側でのほつれ止めのた
めの閂止め作業が不要となり、作業能率を向上すること
ができる。Therefore, conventionally, in an overlock sewing machine, an appropriate length of empty ring is formed at the end of sewing to finish the sewing of the preceding cloth, and this empty ring is placed on the front side of the needle drop position, that is, the feeding side of the cloth. The back stitch is performed by turning and appropriately cutting and holding, and in this state, sewing of the next fabric is started. When this reverse sewing is performed, the empty ring held as described above after sewing the preceding cloth is automatically sewn into the regular stitch together with the empty ring formed at the front of the sewing start end of the next cloth. In addition, bar tacking work for preventing fraying at the sewing start side is not required, so that work efficiency can be improved.

【０００５】図１〜図６は、１本針オーバロックミシン
による返し縫いの実施手順の説明図である。これらに示
す如くオーバロックミシンの針板１は、生地Ｋ又はＫ′
の送り方向と交叉する前縁及び後縁と、これらの一側を
生地Ｋの送り方向に沿って連結する側縁とにより３方を
囲まれ、生地Ｋ又はＫ′の送り込み側に位置する前縁の
近傍に針落ち位置Ａを含んで開口する針孔２を備え、ま
た、該針孔２の側縁の他側に、前縁に基端を発して生地
Ｋの送り方向に沿って後縁の手前まで延設された針板爪
３と、針孔２の前側に開口するメス孔４とを備えてな
る。FIGS. 1 to 6 are explanatory views of a procedure for performing reverse stitching using a single-needle overlock sewing machine. As shown in these figures, the needle plate 1 of the overlock sewing machine is made of the fabric K or K '.
The front edge and the rear edge intersecting the feeding direction of the fabric K and the side edge connecting one side thereof along the feeding direction of the fabric K are surrounded on three sides, and are located on the feeding side of the fabric K or K ′. In the vicinity of the edge, there is provided a needle hole 2 opening including the needle drop position A, and on the other side of the side edge of the needle hole 2, a base end is emitted from the front edge and the rear is along the feed direction of the fabric K. A needle plate claw 3 is provided extending to a position just before the edge, and a female hole 4 is provided in front of the needle hole 2.

【０００６】さて前述した返し縫いは、前記メス孔４の
手前側に空環保持器５を配設することにより実施可能で
ある。図１は、縫い終わりの状態を示している。図示の
如く生地Ｋの縫製は、該生地Ｋの縫い終わり端Ｅが針落
ち位置Ａを適長通過した後にミシン本体の縫い動作を停
止して終了する。このとき縫い終わり端Ｅの後側には、
生地Ｋの端縁に沿う正規の縫い目Ｂに連なる態様にて適
長の空環Ｃが形成されており、この空環Ｃは、針板爪３
に絡まった状態で保持されている。The above-described reverse stitching can be performed by disposing an empty ring retainer 5 in front of the knife hole 4. FIG. 1 shows a state at the end of sewing. As shown in the figure, the sewing operation of the sewing machine main body is stopped after the sewing end end E of the material K has passed the needle drop position A for an appropriate length. At this time, behind the sewing end end E,
An appropriate length of the hollow ring C is formed in a manner connected to the regular seam B along the edge of the cloth K, and the hollow ring C is
It is held in a entangled state.

【０００７】次いで、生地Ｋを引っ張って、空環Ｃの一
部を針板爪３から抜き出し、これらを針落ち位置Ａの手
前側に転回させ、抜き出した空環Ｃを伸長させつつ同側
に配された空環保持器５に導く。空環保持器５は、空環
Ｃの切断用メスと、切断後の空環Ｃを挾圧保持する保持
手段とを一体的に備えてなり、図２に示す如く、空環保
持器５に導かれた空環Ｃは、その中途部を切断されて伸
長状態を保って保持され、また生地Ｋは、縫い終わり端
Ｅ側に適長の空環Ｃを残して切り離される。Next, the fabric K is pulled, a part of the hollow ring C is pulled out from the needle plate claw 3, and these are turned to the front side of the needle drop position A, and the drawn hollow ring C is extended to the same side while being extended. It is led to the arranged empty ring holder 5. The empty ring holder 5 is integrally provided with a cutting knife for cutting the empty ring C and holding means for clamping and holding the empty ring C after cutting. As shown in FIG. The guided empty ring C is cut off in the middle and held in an extended state, and the cloth K is cut off leaving an appropriate length of the empty ring C on the sewing end end E side.

【０００８】なお、前記針板１の針板爪３が突設された
側（外側）には、図示しないミシン本体が存在している
ため、生地Ｋ及び空環Ｃの前記転回は、図２中に矢符に
て示す如く、針板爪３の逆側、即ち針孔２の側縁側（内
側）に行われる。Since the sewing machine main body (not shown) exists on the side (outside) of the needle plate 1 where the needle plate claw 3 protrudes, the turning of the cloth K and the empty ring C is performed as shown in FIG. As shown by an arrow inside, the operation is performed on the opposite side of the needle plate claw 3, that is, on the side edge side (inside) of the needle hole 2.

【０００９】また、後述する縫い込みを確実に行わせる
ために、切断後の空環Ｃは、生地Ｋの送り方向への針落
ち位置Ａの延長線Ｎよりも外側に保持されることが要求
される。前記針板１は、針孔２の前縁の針板爪３側に凹
部20（図１参照）を備えており、この凹部20内に空環Ｃ
の基端側を入り込ませ、切断端を保持する空環保持器５
との間に空環Ｃを張架せしめて保持し、前述した要求に
応えている。このような針板１は、例えば、実公昭63-3
2710号公報に開示されている。Further, in order to surely perform sewing described later, it is necessary that the cut empty ring C is held outside the extension line N of the needle drop position A in the feed direction of the cloth K. Is done. The needle plate 1 is provided with a concave portion 20 (see FIG. 1) at the front edge of the needle hole 2 on the side of the needle plate claw 3.
Empty ring retainer 5 for inserting the base end side of
And the empty ring C is stretched and held between the two to meet the above-mentioned requirement. Such a needle plate 1 is disclosed in, for example,
No. 2710.

【００１０】以上の如く空環Ｃを保持させた後、次なる
生地Ｋ′の縫製を開始する。図３は縫い始めの状態を示
している。図示の如く生地Ｋ′の縫製は、前記メス孔４
から針板１上に突出する生地端切断メス40の前側に縫い
始め端Ｅ′を合わせ、この状態でミシン本体を駆動する
ことにより開始され、この後生地Ｋ′は、生地端切断メ
ス40の動作により端縁を揃えて切断され、針落ち位置Ａ
に送り込まれて縫製される。After holding the empty ring C as described above, sewing of the next fabric K 'is started. FIG. 3 shows a state at the start of sewing. As shown in FIG.
The sewing start end E 'is aligned with the front side of the cloth edge cutting knife 40 projecting from the needle plate 1 onto the needle plate 1, and the sewing machine body is driven in this state. The edge is aligned and cut by the operation, and the needle drop position A
And sewn.

【００１１】さて、生地端切断メス40は針落ち位置Ａの
前方に離隔して位置するため、前述した縫い始めに際し
ては、縫い始め端Ｅ′が針落ち位置Ａに達するまでの間
に生じる運針により空環Ｃ′が形成され、この空環Ｃ′
は、先行生地Ｋの縫い終わりに形成された一部の空環Ｃ
と共に、図４に示す如く、針板爪３に絡まった状態で保
持される。Now, since the cloth edge cutting knife 40 is located in front of the needle dropping position A and separated from the needle dropping position A, at the start of the above-described sewing, the needle movement generated until the sewing start end E 'reaches the needle dropping position A. To form an empty ring C ', and this empty ring C'
Is a part of the empty ring C formed at the end of sewing of the preceding fabric K.
At the same time, as shown in FIG.

【００１２】即ち、生地Ｋ′縫い始め端Ｅ′が針落ち位
置Ａに達したとき、前記針板爪３には相互に連なって形
成された空環Ｃ，Ｃ′が保持されており、これらは図５
に示す如く、以降の生地Ｋ′の送りによる縫い始め端
Ｅ′の進行に伴って徐々に押し出され、空環保持器５と
の間に張架された空環Ｃにより手前側に引っ張られて、
縫い始め端Ｅ′から生地Ｋ′の端縁に沿って形成される
縫い目Ｂに順次縫い込まれてゆく。最終的には、図６に
示す如く、空環保持器５による空環Ｃの保持端が外れ、
この保持端までが縫い目Ｂに縫い込まれて返し縫いが完
了する。That is, when the sewing start end E 'of the fabric K' reaches the needle drop position A, the needle plate claws 3 hold empty rings C and C 'formed continuously with each other. Figure 5
As shown in the figure, the material is gradually extruded with the advance of the sewing start end E 'due to the subsequent feeding of the fabric K', and is pulled forward by the empty ring C stretched between the empty ring holder 5 and the front end. ,
The sewing is sequentially sewn from the sewing start end E 'to the seam B formed along the edge of the fabric K'. Eventually, as shown in FIG. 6, the holding end of the empty ring C by the empty ring holder 5 comes off,
The area up to the holding end is sewn into the seam B to complete the reverse stitching.

【００１３】なお、縫い始め端Ｅ′が針落ち位置Ａに達
した後、前記針板爪３は、縁かがりが行われる前記生地
Ｋ′の端縁側を下側から支持し、針落ち位置Ａでの針の
降下に伴って前記端縁が落ち込むことを防ぐ作用をな
す。即ち、生地Ｋ′の縫製は、針孔２の側縁と針板爪３
とにより針落ち位置Ａの両側を夫々支持した状態で行わ
れる。After the sewing start end E 'reaches the needle drop position A, the needle plate claw 3 supports the edge side of the cloth K' where the overcasting is performed from below, and the needle drop position A And prevents the edge from dropping as the needle is lowered. That is, the sewing of the cloth K ′ is performed by the side edge of the needle hole 2 and the needle plate nail 3.
This is performed in a state where both sides of the needle drop position A are respectively supported.

【００１４】[0014]

【考案が解決しようとする課題】以上の如き返し縫い
は、１本針オーバロックミシンにおいては問題なく行い
得るが、生地の送り方向と略直交して並ぶ２本の針を備
えた２本針オーバロックミシンにおいては、次に述べる
不都合が生じる。The above-described reverse stitching can be performed without any problem in a one-needle overlock sewing machine, but a two-needle automatic stitch provided with two needles arranged in a direction substantially perpendicular to the cloth feeding direction. The following inconvenience occurs in the baroque sewing machine.

【００１５】図７は、２本針オーバロックミシンにおい
て一般的に用いられている針板１の平面図である。この
針板１は、１本針オーバロックミシンにおけるそれと同
様、生地の送り方向と交叉する前縁2a及び後縁2bと、こ
れらの一側を生地の送り方向に沿って連結する側縁2c
と、該側縁2cの他側において前縁2aから後縁2bの手前ま
で延設された針板爪３の内側縁とにより４方を囲まれて
開口する針孔２を備え、またこの針孔２の前側に開口す
るメス孔４を備えてなる。FIG. 7 is a plan view of a needle plate 1 generally used in a two-needle overlock sewing machine. The needle plate 1 has a front edge 2a and a rear edge 2b intersecting with the cloth feeding direction, and a side edge 2c connecting one side thereof along the cloth feeding direction, similarly to the one-needle overlock sewing machine.
And a needle hole 2 that is open on four sides by the inner edge of a needle plate claw 3 extending from the front edge 2a to just before the rear edge 2b on the other side of the side edge 2c. A scalpel hole 4 is provided on the front side of the hole 2.

【００１６】前記針孔２は、生地の送り方向と略直交し
て並ぶ２本の針の夫々に対する針落ち位置Ａ₁ 及びＡ₂
を含む必要があることから、広幅とならざるを得ず、１
本針オーバロックミシンの場合と同様に、針孔２の側縁
2cと針板爪３とにより両側を支持しただけでは、縫製中
の生地の落ち込みを防ぐことが難しい。そこで、２本針
オーバロックミシン用の針板１は、図７に示す如く、針
落ち位置Ａ₁ とＡ₂ との間に前縁2aから生地の送り方向
に向かう中支え爪６を突設し、この中支え爪６により生
地の支えを補助して、前記落ち込みを防ぐようになして
ある。The needle holes 2 are located at needle drop positions A ₁ and A _{2 with} respect to two needles arranged substantially perpendicular to the feeding direction of the fabric.
Must be included, so it must be wide.
As in the case of this needle overlock sewing machine,
It is difficult to prevent the falling of the fabric during sewing only by supporting both sides by the 2c and the needle plate nail 3. Therefore, the needle plate 1 for two-needle overlock sewing machine, projecting the pawl 6 supported in towards the feed direction of the fabric from the front edge 2a between as shown in FIG. 7, a needle drop position A ₁ and A ₂ The support claws 6 assist the support of the fabric, thereby preventing the drop.

【００１７】ところが以上の如き中支え爪６を備えた針
板１を用い、前述した返し縫いを行おうとする場合、先
行生地Ｋの縫い終わり端Ｅに連なる空環Ｃが、針板爪３
と共に中支え爪６にも絡まって形成される上、該空環Ｃ
の転回が、前述の如く側縁2c側に行われることから、空
環保持器５により切断，保持された空環Ｃは、図示の如
く、針板爪３と同側の針落ち位置Ａ₁ の延長線Ｎ₁ と重
なることになる。However, when the above-described reverse stitching is to be performed using the needle plate 1 having the above-described intermediate support claws 6, the empty ring C connected to the sewing end end E of the preceding fabric K is formed by the needle plate claws 3.
Together with the support pawl 6 and the empty ring C
Is performed on the side edge 2c side as described above, so that the empty ring C cut and held by the empty ring holder 5 has the needle drop position A ₁ on the same side as the needle plate claw 3 as shown in the figure. so that the overlap with the extended line N _1.

【００１８】従って、図３〜図６に示す手順により次な
る生地Ｋ′の縫製が行われた場合、前述の如く保持され
た空環Ｃが、針板爪３側の針落ち位置Ａ₁ に降下する針
により突き刺され、生地Ｋ′に直接的に縫い付けられる
虞が高く、これ以降は、生地Ｋ′の縫い始め端Ｅ′によ
り図５に示す如く押し出される空環Ｃ及びＣ′が縫い目
Ｂ中に引込まれなくなり、生地Ｋ′の縫い始め端Ｅ′に
空環Ｃ′の一部が残った不完全な製品が得られることに
なる。[0018] Therefore, when the sewing of the fabric K 'to next by the procedure shown in FIGS. 3 to 6 was carried out, an empty ring C held as described above, the needle plate claw 3 side needle drop position A ₁ There is a high possibility that the needle is pierced by the descending needle and sewn directly to the fabric K ', and thereafter, the empty rings C and C' pushed out by the sewing start end E 'of the fabric K' as shown in FIG. As a result, an incomplete product is obtained in which no part of the empty ring C 'remains at the sewing start end E' of the cloth K '.

【００１９】つまり、２本針オーバロックミシンの針板
１においては、生地の送り方向に直交して並ぶ２か所の
針落ち位置Ａ₁ ，Ａ₂ 間に存在する中支え爪６が、前記
転回の後における空環Ｃの適正な保持が行えず、返し縫
いの確実な実施が困難となるのであり、特公昭59−6677
号公報及び前記実公昭63-32710号公報においては、前記
中支え爪６を進退自在に構成し、先行生地の縫製を終え
た後、空環Ｃを転回して空環保持器５により切断保持さ
せるまでの間、中支え爪６を退入させることにより空環
Ｃの適正な保持を可能として、前記不都合の解消を図っ
ており、また実公平２-11016号公報には、中支え爪６を
省略して前記不都合の解消を図る一方、図７中に２点鎖
線にて示す如く、針孔２の後縁2bから、針落ち位置
Ａ₁ ，Ａ₂ の直後にまで延びる支持片７を突設し、縫製
中の生地を支える構成とした針板が開示されている。That is, in the needle plate 1 of the two-needle overlock sewing machine, the middle support claws 6 existing between the _two needle drop positions A ₁ and A ₂ arranged in a direction orthogonal to the cloth feeding direction are provided. Since the empty ring C cannot be properly held after the turning, it is difficult to reliably perform the reverse stitching.
In Japanese Patent Application Laid-Open No. 63-32710 and Japanese Utility Model Application Publication No. 63-32710, the support pawl 6 is configured to be able to advance and retreat, and after the sewing of the preceding fabric is completed, the empty ring C is turned and cut and held by the empty ring retainer 5. Until the intermediate support pawl 6 is retracted, the above-mentioned inconvenience is solved by allowing the hollow ring C to be properly held by retreating. The support piece 7 extending from the rear edge 2b of the needle hole ₂ to immediately after the needle drop positions A ₁ and A ₂ as shown by a two-dot chain line in FIG. A needle plate which is protruded and configured to support a material being sewn is disclosed.

【００２０】ところが前者、即ち、特公昭59−6677号公
報及び前記実公昭63-32710号公報に開示された針板にお
いては、針板１の下部又は前部に、中支え爪６を進退動
作させるための駆動手段（ソレノイド等）が必要であ
り、該手段の配設位置の確保が困難である上、構成の複
雑化を招来するという難点がある。However, in the former, that is, in the needle plate disclosed in Japanese Patent Publication No. Sho 59-6677 and Japanese Utility Model Publication No. Sho 63-32710, the support pawl 6 is moved forward and backward at the lower portion or the front portion of the needle plate 1. A driving means (solenoid or the like) is required for this purpose, and it is difficult to secure an arrangement position of the means, and there is a problem that the configuration is complicated.

【００２１】これに対し後者、即ち、実公平２-11016号
公報に開示された針板は、付加的な装置を必要としない
利点を有するが、針落ち位置Ａ₁ ，Ａ₂ に降下するオー
バロックミシンの針は、公知の如く、上部を後側に向け
て傾斜した状態にあることから、これらの針に挿通され
た針糸が、針落ち位置Ａ₁ ，Ａ₂ の直後に位置する前記
支持片７の前端に接触して針糸の付加張力が変動し、糸
調子の変化により正規の縫い目Ｂの良好な形成が阻害さ
れるという難点が生じる。On the other hand, the latter, that is, the needle plate disclosed in Japanese Utility Model Publication No. Hei 2-11016 has an advantage that no additional device is required, but the needle plate which descends to the needle drop positions A ₁ and A _2. As is well known, the needle of the baroque sewing machine is in a state in which the upper portion is inclined rearward, so that the needle thread inserted through these needles is located immediately after the needle drop positions A ₁ and A _2. The additional tension of the needle thread fluctuates in contact with the front end of the support piece 7, and a change in the thread condition hinders the proper formation of the regular seam B.

【００２２】本考案は斯かる事情に鑑みてなされたもの
であり、付加的な装置を必要とすることなく、また正規
の縫い目の形成を阻害することなく、返し縫いの確実な
実施を可能とする２本針オーバロックミシンの針板を提
供することを目的とする。The present invention has been made in view of such circumstances, and enables reliable execution of reverse stitching without requiring an additional device and without obstructing formation of a regular seam. An object of the present invention is to provide a needle plate of a two-needle overlock sewing machine.

【００２３】[0023]

【課題を解決するための手段】本考案に係る２本針オー
バロックミシンの針板は、生地の送り方向と略直交して
並ぶ２本の針の針落ち位置を含み、これらの並び線に沿
う前縁及び後縁を有して開口する針孔と、該針孔の前縁
から後縁の手前に至る間に送り方向に沿って延設され、
前記針孔の一側縁を構成すると共に、前記生地の送給時
に該生地の縁かがり部を支持し、非送給時に形成される
空環を後縁側への抜き出し可能に保持する針板爪とを備
えた２本針オーバロックミシンの針板において、前記針
板爪は、同側の針による縫い線にその先端が達しない範
囲で前記針孔の内側に向けて傾斜させてあり、また前記
針孔の他側縁に、同側の針落ち位置の後側に適長に亘っ
て、同側の針による縫い線に達しない幅を有して内向き
に突設された支え突起を具備することを特徴とする。The needle plate of the two-needle overlock sewing machine according to the present invention includes the needle drop positions of two needles arranged substantially orthogonal to the cloth feeding direction. A needle hole that has an opening having a leading edge and a trailing edge along the line, and extends along the feeding direction from a leading edge of the needle hole to a position before the trailing edge,
A needle plate claw that constitutes one side edge of the needle hole, supports an overhang portion of the fabric when feeding the fabric, and holds an empty ring formed during non-feeding so as to be able to be pulled out to the trailing edge side. In the needle plate of the two-needle overlock sewing machine provided with the above, the needle plate claw is inclined toward the inside of the needle hole as far as the tip does not reach a sewing line by the same side needle, the other side edge of said needle hole, Tsu over a period of appropriate length to the rear side of the needle drop position of the ipsilateral
And a support protrusion protruding inward and having a width not reaching the sewing line of the needle on the same side .

【００２４】[0024]

【作用】本考案においては、針落ち位置間の中支え爪を
設けず、空環の転回及びこの後の適正な保持を確実に行
わせる一方、縫製中の生地を、内向きに傾斜させた針板
爪と、針孔の他側縁から突設された支え突起とにより支
え、生地の落ち込みを防ぐ。更に、針板爪の傾斜及び支
え突起の突設幅を、これらへの針糸の接触をなくすべ
く、夫々と同側の針による縫い線に達しない範囲に限定
し、糸調子が変化した不良な縫い目の発生を防止する。According to the present invention, no support pawl between the needle drop positions is provided, and the turning of the empty ring and the proper holding thereof thereafter are ensured, while the cloth being sewn is inclined inward. It is supported by a needle plate claw and a support projection protruding from the other side edge of the needle hole to prevent the cloth from dropping. Furthermore, in order to eliminate the contact of the needle thread with these, the inclination of the needle plate claw and the projection width of the support projection are limited to a range that does not reach the sewing line by the needle on the same side, and the thread tension is changed. Prevents the generation of stitches.

【００２５】[0025]

【実施例】以下本考案をその実施例を示す図面に基づい
て詳述する。図８は本考案に係る針板の平面図である。
この針板１は、図７に示す従来の針板１と同様、生地の
送り方向と略直交する前縁2a及び後縁2bと、これらの一
側を生地の送り方向に沿って連結する側縁2cと、該側縁
2cの他側において前縁2aから後縁2bの手前まで延設され
た針板爪３の内側縁とにより４方を囲まれて開口する針
孔２を備え、またこの針孔２の前側に開口するメス孔４
を備えてなり、図示の如く、生地の送り方向と略直交し
て並設された２本の針の夫々に対して設定された針落ち
位置Ａ₁ 及びＡ₂ が、針孔２の前縁2aの直後に近接して
並ぶようにミシン本体に固定されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing an embodiment thereof. FIG. 8 is a plan view of the needle plate according to the present invention.
This needle plate 1 has a front edge 2a and a rear edge 2b substantially orthogonal to the cloth feeding direction, and a side connecting one side thereof along the cloth feeding direction, similarly to the conventional needle plate 1 shown in FIG. Edge 2c and the side edge
On the other side of 2c, there is provided a needle hole 2 which is surrounded and opened on four sides by an inner edge of a needle plate claw 3 extending from a front edge 2a to a position before a rear edge 2b. Female hole 4 to open
As shown in the drawing, the needle drop positions A ₁ and A ₂ set for each of the two needles arranged substantially perpendicular to the cloth feeding direction are the leading edges of the needle holes 2. It is fixed to the sewing machine main body so as to line up immediately after 2a.

【００２６】一方本考案に係る針板１は、図７に示す従
来の針板１とは異なり、前記針落ち位置Ａ₁ とＡ₂ との
間に突設された中支え爪６を備えておらず、これに代わ
るものとして、針孔２の前記側縁2cに、同側の針落ち位
置Ａ₂ の後側から適宜の長さ範囲に亘り、針孔２の内側
に向けて突設された支え突起10を備えている。また本考
案に係る針板１の針板爪３は、後縁2bに向けて延びるそ
の先端を、針孔２の内側に向けて傾斜せしめてある。On the other hand the needle plate 1 according to the present invention, unlike the conventional needle plate 1 shown in FIG. 7, comprises a pawl 6 supported in projecting from between the stitch points A ₁ and A ₂ Orazu, as an alternative to this, the side edges 2c of the needle hole 2, over a suitable length ranging from the rear side of the needle drop position a ₂ on the same side, is projected toward the inside of the needle hole 2 The support projection 10 is provided. The needle plate claw 3 of the needle plate 1 according to the present invention has its tip extending toward the trailing edge 2b inclined toward the inside of the needle hole 2.

【００２７】図９は、本考案に係る針板１の針孔２近傍
の拡大図である。本図に明らかな如く、前記支え突起10
の突設幅は、これの端縁が、同側の針落ち位置Ａ₂ の延
長線Ｎ₂ 上に掛からないように、即ち、前記針落ち位置
Ａ ₂ に降下する同側の針により前記延長線Ｎ ₂ に沿って
形成される縫い線に達しないように設定されており、ま
た前記針板爪３の傾斜は、これの先端部の内側が、同側
の針落ち位置Ａ₁ の延長線Ｎ₁ 上に掛からないように、
即ち、前記針落ち位置Ａ ₁ に降下する同側の針により前
記延長線Ｎ ₁ に沿って形成される縫い線に達しないよう
に設定されている。FIG. 9 is an enlarged view of the vicinity of the needle hole 2 of the needle plate 1 according to the present invention. As is apparent from FIG.
'S projected width, which edge is not placed on the upper extension line N ₂ stitch point A ₂ of the ipsilateral, i.e., the needle location
Along the extension line N ₂ by the same needle descending to A ₂
Are set so as not to reach the sewing line formed, also the inclination of the needle plate pawl 3, the inner this tip portion, not applied on the extension line N ₁ stitch point A ₁ of the ipsilateral as such,
That is, the needle on the same side descending to the needle drop position A ₁
So as not to reach the sewing line formed along the serial extension line N ₁
Is set to

【００２８】更に、前記針板爪３は、これに絡まって保
持される空環Ｃの抜け出しを容易化すべく、従来と同
様、先端に至るに従って幅を減じた形状を有するが、本
考案に係る針板１の針板爪３は、これの先端から適宜の
長さに亘って、これの基端側よりも減幅の程度を増した
先細部30を有している。また針孔２の前縁2aは、針落ち
位置Ａ₁ 及びＡ₂ の並設線に対し、針板爪３側が離隔す
る向きに傾斜せしめてあり、針板爪３とのつなぎ部分に
は、凹部20が形成されている。Further, the needle plate claw 3 has a shape in which the width is reduced toward the tip as in the related art in order to facilitate the escape of the hollow ring C which is entangled with and held by the needle plate claw. The needle plate claw 3 of the needle plate 1 has a tapered portion 30 whose width is increased from the base end side thereof over an appropriate length from the distal end thereof. The front edge 2a of yet needle hole 2, to parallel設線stitch point A ₁ and A _2, Yes and slant in the direction the needle plate claw 3 side is disengaged, the joint portion between the needle plate claw 3, A recess 20 is formed.

【００２９】以上の如く構成された本考案に係る針板１
においては、２本の針の針落ち位置Ａ₁ ，Ａ₂ 間に中支
え爪６が存在しないことから、先行生地Ｋの縫い終わり
端Ｅに連なる空環Ｃは、図１に示す１本針オーバロック
ミシンにおける場合と同様、針板爪３にのみ絡まって形
成され、また、前述の如く側縁2c側に行われる空環Ｃの
転回が確実に行われ、転回後の空環Ｃは、前縁2aの傾斜
に沿って案内されて凹部20に嵌まり込み、図９に示す如
く、２か所の針落ち位置Ａ₁ ，Ａ₂ 夫々の延長線Ｎ₁ ，
Ｎ₂ のいずれにも交叉することなく保持される。The needle plate 1 according to the present invention configured as described above.
In this case, since there is no supporting nail 6 between the needle drop positions A ₁ and A _{2 of the two} needles, the empty ring C connected to the sewing end end E of the preceding fabric K is a single needle shown in FIG. As in the case of the overlock sewing machine, the ring C is formed so as to be entangled only with the needle plate claw 3, and the rotation of the ring C performed on the side edge 2c side is reliably performed as described above. It is guided along the inclination of the front edge 2a and fits into the concave portion 20, and as shown in FIG. 9, the extension lines N ₁ and N ₂ of the _two needle drop positions A ₁ and A ₂ , respectively.
It is held without crossing any of N ₂ .

【００３０】従って、図３〜図６に示す手順により行わ
れる次なる生地Ｋ′の縫製に際し、該生地Ｋ′に空環Ｃ
が縫い付けられる虞はなくなり、図５に示す如く押し出
される空環Ｃ及びＣ′は、縫い目Ｂ中に確実に縫い込ま
れる。また、針板爪３の先端側に前記先細部30を備えた
ことにより、前述した空環Ｃの転回、及びこれに先立つ
空環Ｃの引き出しが、一層容易に行える効果もある。Therefore, when the next fabric K 'is sewn by the procedure shown in FIGS. 3 to 6, an empty ring C is added to the fabric K'.
There is no danger of being sewn, and the hollow rings C and C ′ pushed out as shown in FIG. 5 are securely sewn into the seam B. In addition, the provision of the tapered portion 30 on the distal end side of the needle plate claw 3 has an effect that the above-described turning of the empty ring C and the drawing out of the empty ring C prior thereto can be more easily performed.

【００３１】更に本考案に係る針板１においては、針落
ち位置Ａ₁ 及びＡ₂ の後側に、支え突起10及び針板爪３
が内向きに張り出しており、これらが、縫製中の生地
Ｋ′を下側から支え、針の降下に伴う生地Ｋ′の落ち込
みを防ぐ作用をなす。一方針板爪３の傾斜、及び支え突
起10の突設幅は、夫々と同側の針落ち位置Ａ₁ 及びＡ₂
に降下する各別の針による縫い線に達しない範囲に限定
してあるから、これらと針糸との接触が生ずる虞はな
い。而して本考案に係る針板１を用いた場合、縫製中の
落ち込みに伴う生地の縒れがなく、糸調子の変化がない
良質な縫製品を安定して得ることができる。Further, in the needle plate 1 according to the present invention, the support projections 10 and the needle plate claws 3 are located behind the needle drop positions A ₁ and A _2.
Are projected inward, and they support the fabric K 'being sewn from below, and have the effect of preventing the fabric K' from dropping due to the lowering of the needle. On the other hand, the inclination of the needle plate claw 3 and the projection width of the support protrusion 10 are respectively set to the needle drop positions A ₁ and A ₂ on the same side.
Is limited to a range that does not reach the sewing line formed by the different needles, so that there is no possibility that these will come into contact with the needle thread. Thus, when the needle plate 1 according to the present invention is used, it is possible to stably obtain a high-quality sewn product having no twist of the fabric due to a drop during sewing and no change in thread tension.

【００３２】[0032]

【考案の効果】以上詳述した如く本考案に係る針板にお
いては、針落ち位置間に中支え爪が存在しないことか
ら、返し縫いに際しての空環の転回、及びこの後の適正
な保持を確実に行わせることができ、また縫製中の生地
は、針孔の一側に内向きに傾斜させて設けた針板爪と、
他側から突設された支え突起とにより支えるから、縫製
中の生地の落ち込みを確実に防ぐことができ、更に、針
板爪の傾斜及び支え突起の突設幅を夫々と同側の針によ
る縫い線に達しない範囲に限定したから、これらに針糸
が接触する虞がなくなり、付加的な装置を必要とするこ
となく、また正規の縫い目の形成を阻害することなく、
２本針オーバロックミシンによる返し縫いを確実に実施
できるようになる等、本考案は優れた効果を奏する。As described above in detail, in the needle plate according to the present invention, since there is no supporting pawl between the needle drop positions, it is possible to ensure the turning of the empty ring at the time of reverse stitching and the proper holding thereafter. can be performed, also the fabric during sewing has a needle plate pawl provided to be inclined inwardly on one side of the needle hole,
Since it is supported by the supporting projections projecting from the other side, it is possible to reliably prevent the falling of the fabric during sewing, and furthermore, the inclination of the needle plate nail and the projecting width of the supporting projections are adjusted by the needles on the same side. Since it is limited to a range that does not reach the seam line, there is no possibility that the needle thread will come into contact with these, without requiring an additional device, and without hindering the formation of a regular seam,
The present invention has an excellent effect, for example, it is possible to reliably perform reverse stitching with a two-needle overlock sewing machine.

【図面の簡単な説明】[Brief description of the drawings]

【図１】１本針オーバロックミシンによる返し縫いの実
施手順の説明図である。FIG. 1 is an explanatory diagram of an execution procedure of a reverse stitch by a one-needle overlock sewing machine.

【図２】１本針オーバロックミシンによる返し縫いの実
施手順の説明図である。FIG. 2 is an explanatory diagram of an execution procedure of a reverse stitch by a one-needle overlock sewing machine.

【図３】１本針オーバロックミシンによる返し縫いの実
施手順の説明図である。FIG. 3 is an explanatory diagram of a procedure for performing reverse stitching with a single-needle overlock sewing machine.

【図４】１本針オーバロックミシンによる返し縫いの実
施手順の説明図である。FIG. 4 is an explanatory diagram of a procedure of performing reverse stitching with a single-needle overlock sewing machine.

【図５】１本針オーバロックミシンによる返し縫いの実
施手順の説明図である。FIG. 5 is an explanatory diagram of an execution procedure of a reverse stitch by a one-needle overlock sewing machine.

【図６】１本針オーバロックミシンによる返し縫いの実
施手順の説明図である。FIG. 6 is an explanatory diagram of an execution procedure of a reverse stitch by a one-needle overlock sewing machine.

【図７】２本針オーバロックミシン用の一般的な針板の
平面図である。FIG. 7 is a plan view of a general needle plate for a two-needle overlock sewing machine.

【図８】本考案に係る針板の平面図である。FIG. 8 is a plan view of the needle plate according to the present invention.

【図９】本考案に係る針板の要部を拡大して示す平面図
である。FIG. 9 is an enlarged plan view showing a main part of the needle plate according to the present invention.

【符号の説明】[Explanation of symbols]

１ 針板 ２ 針孔 ３ 針板爪 ４ メス孔 ５ 空環保持器 10 支え突起 Ａ₁ 針落ち位置 Ａ₂ 針落ち位置 Ｃ 空環 Ｃ′ 空環 Ｋ 生地 Ｋ′ 生地1 Needle plate 2 Needle hole 3 Needle plate claw 4 Female hole 5 Empty ring retainer 10 Supporting protrusion A ₁ Needle drop position A ₂ Needle drop position C Empty ring C 'Empty ring K Fabric K' Fabric

───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.⁶，ＤＢ名) D05B 73/12 D05B 1/20 D05B 65/06 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) D05B 73/12 D05B 1/20 D05B 65/06

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項１】 生地の送り方向と略直交して並ぶ２本の
針の針落ち位置を含み、これらの並び線に沿う前縁及び
後縁を有して開口する針孔と、該針孔の前縁から後縁の
手前に至る間に送り方向に沿って延設され、前記針孔の
一側縁を構成すると共に、前記生地の送給時に該生地の
縁かがり部を支持し、非送給時に形成される空環を後縁
側への抜き出し可能に保持する針板爪とを備えた２本針
オーバロックミシンの針板において、前記針板爪は、同
側の針による縫い線にその先端が達しない範囲で前記針
孔の内側に向けて傾斜させてあり、また前記針孔の他側
縁に、同側の針落ち位置の後側に適長に亘って、同側の
針による縫い線に達しない幅を有して内向きに突設され
た支え突起を具備することを特徴とする２本針オーバロ
ックミシンの針板。1. A needle hole including a needle drop position of two needles arranged substantially orthogonal to a feeding direction of a fabric, having a front edge and a rear edge along the line, and the needle hole. Extending along the feeding direction from the front edge to just before the rear edge of the fabric, constitutes one side edge of the needle hole, and supports the overhang portion of the fabric at the time of feeding the fabric; In a needle plate of a two-needle overlock sewing machine having a needle plate claw for holding an empty ring formed at the time of feeding so as to be able to be pulled out to the trailing edge side, the needle plate claw is formed by a sewing line formed by the needle on the same side. Yes is inclined toward the inside of the needle holes to the extent that its tip does not reach, and the other side edge of said needle hole, I over a period of appropriate length to the rear side of the needle drop position of the ipsilateral, ipsilateral
A needle plate for a two-needle overlock sewing machine, comprising a support projection which has a width which does not reach a sewing line by a needle and which is projected inward.