JPH0623159A - Simplified desk zig-zag sewing machine - Google Patents

Abstract

PURPOSE:To provide the selecting mechanism of a zig-zag sewing pattern cam which can be produced at a low cost and further is not functionally inferior to the full-scale sewing machine. CONSTITUTION:Several cam selectors corresponding to the peripheral faces of respective zig-zag sewing pattern cams are freely rotatably fitted to a selector shaft 12 provided at the size part of the several kinds of zig-zag sewing pattern cams in one group to be rotated by the driving mechanism of the sewing machine and at a slidable slider 17 constituted by axially linking the base terminal of an arm 18 linked the other terminal to a needle bar oscillating frame 21 is provided with a selection operating shaft 32 to be manually revolved parallelly to the selector shaft 12. Then, a lot of projectors 331-335 corresponding to the respective cam selectors are helically formed on the peripheral face of the selection operating shaft 32 and the slider 17 is slid against a spring so as to select any required projector corresponding to the required cam selector.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は合成樹脂、軽合金鋳物等
により主部を作製した簡易卓上ジグザグミシン、特にジ
グザグミシンの要部である数種のジグザグ縫模様カムの
選択機構に関するもので、簡易を旨とするジグザグミシ
ンにふさわしい構成を提供するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simple tabletop zigzag sewing machine whose main part is made of a synthetic resin, a light alloy casting, etc., and more particularly to a selection mechanism of several kinds of zigzag sewing pattern cams which are essential parts of the zigzag sewing machine. It provides a structure suitable for a zigzag sewing machine for simplicity.

【０００２】[0002]

【従来の技術】従来、素材の材質を自由に組み合わせた
比較的高価な本格ジグザグミシンは、１つの軸子に嵌合
した数種一群のジグザグ縫模様カムの選択子を、例えば
特公昭３７−１８０３２号公報に示しているように、軸
子に対して軸方向にのみ移動可能に嵌め、その選択子
を、軸子の小回転により現在係合している模様カムから
離し、それから手動ダイヤルハンドルにより、回転軸の
周りに設けたラック等により選択子を移動して目標の模
様カムの外周に合致させる制御を施してから、前記軸子
の回転を元に戻す操作を施しているが、廉価を１つの目
標とする簡易ジグザグミシンには、それにふさわしい簡
易構成が必要である。2. Description of the Related Art Conventionally, a relatively expensive full-scale zigzag sewing machine in which materials are freely combined is provided with a zigzag sewing pattern cam selector of several kinds fitted to one shaft, for example, Japanese Patent Publication No. As shown in Japanese Patent No. 18032, the shaft is movably fitted only in the axial direction, and the selector is moved away from the pattern cam currently engaged by the small rotation of the shaft, and then the manual dial handle. With this, the selector is moved by a rack or the like installed around the rotation axis to match the outer circumference of the target pattern cam, and then the rotation of the shaft is restored to its original state. A simple zigzag sewing machine whose target is to have a simple structure suitable for it.

【０００３】[0003]

【発明が解決しようとする課題】本発明は本格的な高価
なジグザグミシンとは異なり、精度も必要であるが、そ
れよりも廉価に製作できて、しかも機能的には本格的ミ
シンに劣らないジグザグ縫模様カムの選択機構を提供す
ることを解決の課題とし、発明の目的とするものであ
る。The present invention differs from a full-fledged expensive zigzag sewing machine in that it requires precision, but can be manufactured at a lower cost than that and is functionally inferior to a full-fledged sewing machine. It is an object of the invention to provide a mechanism for selecting a zigzag sewing pattern cam, and an object of the invention.

【０００４】[0004]

【課題を解決するための手段】本発明は前項に述べた目
的に合致させたもので、ミシンの駆動機構により回転す
る数種１群のジグザグ縫模様カムの側部に設けた選択子
軸に、各ジグザグ縫模様カムの周面に対応する数個のカ
ム選択子を回転勝手に嵌めるとともに、針棒揺振枠に他
端を連結したアームの基端を軸連結してなる揺動可能な
揺動片に、手動操作により回転させる選択操作軸を前記
選択子軸に対して平行に設け、その選択操作軸の周面に
各カム選択子に対応する多数の凸子を螺旋状に形成し、
揺動片をばねに抗して揺動して所要の凸子を所要のカム
選択子に対応させる選択を施すことを特徴とする簡易卓
上ジグザグミシンに係るものである。SUMMARY OF THE INVENTION The present invention has been made in conformity with the above-mentioned object, and has a selector shaft provided on the side of a zigzag sewing pattern cam of several kinds of groups which is rotated by a driving mechanism of a sewing machine. , Several zigzag sewing pattern cams corresponding to the peripheral surface of the cam are fitted freely in rotation, and the base end of the arm whose other end is connected to the needle bar swing frame is pivotally connected The swinging piece is provided with a selection operation shaft which is rotated by a manual operation in parallel with the selector shaft, and a large number of protrusions corresponding to the respective cam selectors are spirally formed on the peripheral surface of the selection operation shaft. ,
The present invention relates to a simple tabletop zigzag sewing machine characterized in that the swinging piece is swung against a spring to make a desired projection correspond to a desired cam selector.

【０００５】[0005]

【作用】本発明は針棒揺振枠に連結したアーム１８を介
してジグザグ縫カムによる揺振を針棒揺振枠２１に伝達
する揺動片１７に、多数のジグザグ縫カムを選択する選
択操作軸３２を立設し、その操作軸３２に多数の凸子を
角間隔をもつ螺旋状に形成し、前記揺動片１７の揺動に
より前記凸子と、多数のカム選択子との関連を断ち、そ
の状態で選択操作軸３２のみを回転して凸子の１つを、
所要のカム選択子の何れかに合致させる選択を行う。According to the present invention, a large number of zigzag stitching cams are selected for the swinging piece 17 that transmits the swinging by the zigzag stitching cam to the needle bar swinging frame 21 via the arm 18 connected to the needle bar swinging frame. The operating shaft 32 is erected, and a large number of convexes are formed on the operating shaft 32 in a spiral shape having angular intervals. The swinging of the swinging piece 17 allows the convexes to be associated with a large number of cam selectors. Then, in that state, only the selection operation shaft 32 is rotated and one of the convexes is
Make a selection that matches any of the required cam selectors.

【０００６】[0006]

【実施例】添付図面は本発明の一実施例を示すもので、
図１は一部切欠正面図、図２は図１のＡーＡ線切断拡大
平面図、図３はブラケット９を縦断した拡大正面図、図
４は選択操作軸３２等の斜視図、図５は同縦断面図であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The attached drawings show an embodiment of the present invention.
1 is a partially cutaway front view, FIG. 2 is an enlarged plan view taken along the line AA of FIG. 1, FIG. 3 is an enlarged front view in which a bracket 9 is vertically cut, and FIG. 4 is a perspective view of a selection operation shaft 32, etc. Is a vertical sectional view of the same.

【０００７】１は合成樹脂製ミシンケースであつて、腕
部２と布送りベッド３と縦部４とからなり、これにカバ
ー５を合着してなる。ミシンケース１の縦部４の内部
に、小型モータＭを取付け、そのモータにより駆動され
る減速機構６により金属製の上軸７と、クランクロッド
８を駆動する。９は前記ミシンケース１の腕部２の内面
にねじ１０により取付け、かつ下面のみを解放した合成
樹脂製ブラケットで、模様カム軸１１、選択子軸１２、
揺動軸１３を図１〜３のように前後に差渡して固定す
る。Reference numeral 1 denotes a synthetic resin sewing machine case which comprises an arm portion 2, a cloth feed bed 3 and a vertical portion 4, to which a cover 5 is attached. A small motor M is mounted inside the vertical portion 4 of the sewing machine case 1, and a metal upper shaft 7 and a crank rod 8 are driven by a reduction mechanism 6 driven by the motor. Reference numeral 9 denotes a synthetic resin bracket which is attached to the inner surface of the arm portion 2 of the sewing machine case 1 with a screw 10 and only the lower surface is opened. The pattern cam shaft 11, the selector shaft 12,
As shown in FIGS. 1 to 3, the oscillating shaft 13 is passed forward and backward and fixed.

【０００８】模様カム軸１１は最も下方に位置し、該軸
に複数個のジグザグ縫カム１４_１〜１４_５とラック歯車
１５の一体形成体を回転自由に嵌める。選択軸子軸１２
には、各ジグザグ縫カム１４_１〜１４_５の外周に１個ず
つを接触可能に対応させた多数の合成樹脂製カム選択子
１６_１〜１６_５とフリー選択子１６_６を個々に揺動でき
るようにして嵌める。揺動軸１３には揺動片１７の基部
を揺動自由に嵌める。揺動片１７の自由端にアーム１８
の基端を軸連結し、そのアーム１８に引きバネ１９を掛
け、さらにアーム１８の他端を、軸２０を中心にして左
右に揺振する針棒揺振枠２１に軸連結する。[0008] pattern camshaft 11 is located lowermost, fitting the integrally formed of a plurality of zigzag sewing cam ₁₄ 1-14 ₅ and the rack gear 15 to the shaft to rotate freely. Selection shaft 12
The can swing a number of synthetic resin cam selector ₁₆ 1 to 16 ₅ and the free selector 16 ₆ contactable allowed to correspond one by one to the outer periphery of the zig-zag stitch cam ₁₄ 1-14 ₅ individually To fit. The base of the swing piece 17 is swingably fitted on the swing shaft 13. The arm 18 is attached to the free end of the swing piece 17.
A base end of the arm 18 is axially connected, a tension spring 19 is applied to the arm 18, and the other end of the arm 18 is axially connected to a needle bar vibrating frame 21 that vibrates left and right around a shaft 20.

【０００９】針棒２２は針棒揺振枠２１に摺動のみ自由
に通し、さらに前記の揺振枠２１に対応させて係合した
枠材２３に固定し、前記上軸７の端部に固着した合成樹
脂製クランク腕２４の偏心部に設けた角形片２５を、枠
材２３の前後方向の溝部材２６に摺動自由に嵌めた構成
になる。The needle bar 22 is slidably passed through the needle bar vibrating frame 21 only, and is fixed to a frame member 23 which is engaged with the vibrating frame 21 in correspondence with the end of the upper shaft 7. The square piece 25 provided on the eccentric part of the fixed synthetic resin crank arm 24 is slidably fitted in the longitudinal groove member 26 of the frame member 23.

【００１０】前記揺動片１７には、自由端近くに直立し
た金属製の支持軸３１を固定し、その支持軸３１にパイ
プ形の合成樹脂製選択操作軸３２を回転自由に嵌め、該
操作軸３２の周面に各カム選択子１６_１〜１６_５とフリ
ー選択子１６_６の何れか１個に回転とともに押圧可能に
対応する多数個の凸子３３_１〜３３_６を４０°〜４５°
の角間隔で螺旋状に一体成形し、上端にストッパ３４を
一体に設け、そのストッパ３４の外周から突出する支持
腕３５に上向きのピン３６を設け、ストッパ３４上には
スポンジゴム等の弾力リング３７を重ね、さらに弾力リ
ング３７の上に前記のピン３６を上下動自由に嵌めた溝
３９を成形した加圧板３８を重ね、加圧板３８の上面に
突起４０を設け、支持軸３１に固定した加圧板３８上の
回転つまみ４１の下面に前記の凸子３３_１〜３３_６の角
間隔に合わせて前記突起４０に順次に嵌まる多数の下面
凹欠４３を設けたリング４２を成形してなる。A metal support shaft 31 which is upright near the free end is fixed to the swing piece 17, and a pipe-shaped synthetic resin selection operation shaft 32 is rotatably fitted to the support shaft 31 and the operation is performed. plurality of Totsuko ₃₃ to 333 ₆ 40 ° to 45 ° for pressing it can cope with the rotation to the peripheral surface of the shaft 32 in any one of the respective cam selector ₁₆ 1 to 16 ₅ and the free selector 16 ₆
Is integrally formed in a spiral shape at angular intervals of, a stopper 34 is integrally provided at the upper end, and a support arm 35 protruding from the outer periphery of the stopper 34 is provided with an upward pin 36. On the stopper 34, an elastic ring of sponge rubber or the like is provided. 37, and a pressure plate 38, in which a groove 39 in which the pin 36 is fitted in a vertically movable manner is formed, is stacked on the elastic ring 37, and a projection 40 is provided on the upper surface of the pressure plate 38 and fixed to the support shaft 31. by molding the ring 42 having a full number of lower surface concave 43 sequentially fitted on the projection 40 on the lower surface in accordance with the above Totsuko 33 _to 333 ₆ angular spacing of the rotary knob 41 on the pressure plate 38 .

【００１１】本実施例は針棒２２のアーム１８によるジ
グザグ振幅以内で揺動片１７を揺動軸１３を中心にして
揺動し、ミシン縫いのときは引きばね１９により凸子３
３_１〜３３_６の何れかを、カム選択子１６_１〜１６_５の
何れかを介してジグザグ縫カム１４_１〜１４_５に圧接す
る。ジグザグ縫模様を変更するには、 回転つまみ４
１により揺動片１７を引きばね１９の弾力に抗して反時
計方向に揺動して凸子３３_１〜３３_６を自由回転できる
ようにした上、前記つまみ４１を回転する。しかると
き、リング４２の下面切欠４３の間で突起４０と弾力リ
ング３７とを押し下げたり、下面切欠４３を突起４０に
嵌めたりしながら所要の凸子３３_１〜３３_６を所要のカ
ム選択子１６_１〜１６_５またはフリー選択子１６_６に対
応する。 それをつまみ４１の数字目盛り等で確認し
て手を離すと、選択操作軸３２が引きばね１９により引
かれ、針棒２１とともに戻つて所要のカム選択子を介し
て、ジグザグ縫カム１４_１〜１４_５を選択する。（選択
子１６_６に対応するジグザグ縫カムはない。）In this embodiment, the swing piece 17 is swung about the swing shaft 13 within the zigzag amplitude by the arm 18 of the needle bar 22, and when the sewing machine is sewn, the protrusion 3 is pulled by the pulling spring 19.
3 _to 333 ₆ either, pressed against the zigzag stitch cam ₁₄ 1-14 ₅ via either of the cam selector ₁₆ 1 to 16 _5. To change the zigzag sewing pattern, turn knob 4
Upper had free rotate Totsuko 33 _to 333 ₆ swings in the counterclockwise direction against the swinging piece 17 to the elastic force of the tension spring 19 by 1, rotating the knob 41. Accordingly time, the lower surface notch 43 or push down the projection 40 and the resilient ring 37 between the lower surface notch 43 of the required the required Totsuko ₃₃ to 333 ₆ while or fitted to the protrusion 40 cam selector 16 of the ring 42 _{1 to} 16 ₅ or the free selector 16 ₆ . Release the check with it the knob 41 numerical scale or the like, selection operation shaft 32 is pulled by the tension spring 19, via a return connexion required cam selector with the needle bar 21, a zigzag stitch cams 14 ₁ - Select 14 ₅ . (Zigzag stitch cam corresponding to selector 16 ₆ no.)

【００１２】[0012]

【発明の効果】本発明は、廉価を１つの目標とするため
合成樹脂、軽合金鋳物等により主部を作製した簡易卓上
ジグザグミシンであつて、ミシンの駆動機構により回転
する数種１群のジグザグ縫模様カムを通常ミシンのよう
に駆動する構成において、多数のジグザグ縫模様カム１
４_１〜１４_５などの模様カムを嵌めた模様カム軸１１の
側部に選択子軸１２を設け、その選択子軸１２に前記各
ジグザグ縫模様カムの周面に対応する数個のカム選択子
１６_１〜１６_５などの多数のカム選択子のそれぞれを回
転勝手に嵌め、上下動の針棒揺振枠２１に他端を連結し
たアーム１８の基端を、揺動軸１３を揺動可能に嵌めた
揺動片１７に軸連結し、手動操作により回転させる選択
操作軸３２を、揺動片１７上で選択子軸１２に対して平
行に設け、その選択操作軸３２の周面に、前記各カム選
択子に対応する凸子３２_１〜３２_５などの多数の凸子を
螺旋状に形成し、揺動片１７、選択操作軸３２をアーム
１８とともにばねに抗して揺動して前記各凸子を各カム
選択子から引き離し、さらに選択操作軸３２を回転して
所要の凸子を所要のカム選択子に対応させる選択を施す
構成になるもので、機能的には本格的ミシンに劣らない
ジグザグ縫模様カムの選択機構を簡易に提供できる効果
がある。Industrial Applicability The present invention is a simple tabletop zigzag sewing machine whose main part is made of synthetic resin, light alloy casting, etc. for the purpose of low cost, and includes several kinds of groups which rotate by the driving mechanism of the sewing machine. In the structure in which the zigzag sewing pattern cam is driven like a normal sewing machine, a large number of zigzag sewing pattern cams 1
4 _{1-14 5} to pattern the side pattern cam shaft 11 fitted with a cam such as selectively provided child shaft 12, the several cam selection corresponding to the peripheral surface of each zigzag Nuimoyo cams to the selected child shaft 12 Each of a large number of cam selectors such as the children 16 _{1 to} 16 ₅ is freely rotated to swing the swing shaft 13 at the base end of the arm 18 whose other end is connected to the vertically moving needle bar swing frame 21. A selection operation shaft 32, which is axially connected to the rocking piece 17 that is fitted as much as possible and is rotated by a manual operation, is provided on the rocking piece 17 in parallel to the selector shaft 12, and the peripheral surface of the selection operation shaft 32 is provided. , many Totsuko such Totsuko 32 _{1-32 5} corresponding to the respective cam selector is formed in a spiral shape, rocking piece 17, and swings the selecting operation shaft 32 against the spring together with the arm 18 To separate each of the convexes from each of the cam selectors, and further rotate the selection operation shaft 32 to obtain a desired convexity. Made of a configuration for performing a selection to correspond to the required cam selector, functional is effective which can provide a selection mechanism zigzag Nuimoyo cam not inferior in earnest sewing machine simply to.

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

添付図面は本発明の一実施例を示したもので、 The accompanying drawings show an embodiment of the present invention.

【図１】一部切欠正面図1] Partially cutaway front view

【図２】図１のＡーＡ線切断拡大平面図2 is an enlarged plan view taken along the line AA of FIG.

【図３】ブラケット９を縦断した拡大正面図FIG. 3 is an enlarged front view in which a bracket 9 is cut vertically.

【図４】選択操作軸３２等の斜視図FIG. 4 is a perspective view of a selection operation shaft 32 and the like.

【図５】同縦断面図FIG. 5 is a vertical sectional view of the same.

【符号の説明】[Explanation of symbols]

１ ミシンケース、 ２ 腕部、 ３ 布送りベッド、
４ 縦部、５ カバー、 Ｍ 小形モータ、 ６ 減
速機構、 ７ 上軸、８ クランクロッド、 ９ ブラ
ケット、 １０ ねじ、１１ 模様カム軸、 １２ 選
択子軸、 １３ 揺動軸、１４_１〜１４_５ ジグザグ縫
カム、 １５ ラック歯車、１６_１〜１６_５ カム選択
子、 １６_６ フリー選択子、１７ 揺動片、 １８
アーム、 １９ 引きばね、 ２０ 軸、２１ 針棒揺
振枠、 ２２ 針棒、 ２３ 枠材、 ２４ クランク
腕、２５ 角形片、 ２６ 溝部材、３１ 支持軸、
３２ 選択操作軸、 ３３_１〜３３_６ 凸子、３４ ス
トッパ、 ３５ 支持腕、 ３６ ピン、 ３７ 弾力
リング、３８ 加圧板、 ３９ 溝、 ４０ 突起、
４１ 回転つまみ、４２ リング、 ４３ 下面凹欠1 sewing machine case, 2 arms, 3 cloth feed bed,
4 vertical portion, 5 cover, M small motor, 6 reduction mechanism, 7 upper shaft, 8 crank rod, 9 bracket, 10 screw, 11 pattern cam shaft, 12 selector shaft, 13 swing shaft, 14 _{1 to} 14 ₅ zigzag Sewing cam, 15 rack gears, 16 _{1 to} 16 ₅ cam selector, 16 ₆ free selector, 17 swinging piece, 18
Arm, 19 tension spring, 20 axis, 21 needle bar rocking frame, 22 needle bar, 23 frame material, 24 crank arm, 25 square piece, 26 groove member, 31 support shaft,
32 selection operation shaft, 33 _{1 to} 33 ₆ convex, 34 stopper, 35 support arm, 36 pin, 37 elastic ring, 38 pressure plate, 39 groove, 40 protrusion,
41 rotary knob, 42 ring, 43 bottom concave

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 ミシンの駆動機構により回転する数種１
群のジグザグ縫模様カムの側部に設けた選択子軸に、各
ジグザグ縫模様カムの周面に対応する数個のカム選択子
を回転勝手に嵌めるとともに、針棒揺振枠に他端を連結
したアームの基端を軸連結してなる揺動可能な揺動片
に、手動操作により回転させる選択操作軸を前記選択子
軸に対して平行に設け、その選択操作軸の周面に各カム
選択子に対応する多数の凸子を螺旋状に形成し、揺動片
をばねに抗して揺動して所要の凸子を所要のカム選択子
に対応させる選択を施すことを特徴とする簡易卓上ジグ
ザグミシン。1. A number of types 1 which are rotated by a drive mechanism of a sewing machine.
On the selector shaft provided on the side of the zigzag sewing pattern cam of the group, several cam selectors corresponding to the circumferential surface of each zigzag sewing pattern cam are fitted freely, and the other end is attached to the needle bar vibrating frame. On a swingable rocking piece formed by axially connecting the base ends of the connected arms, a selection operation shaft to be rotated by a manual operation is provided in parallel with the selector shaft, and each of the selection operation shafts has a peripheral surface. A large number of protrusions corresponding to the cam selector are formed in a spiral shape, and the swinging piece is swung against the spring to make a selection so that the desired protrusion corresponds to the required cam selector. Simple desktop zigzag sewing machine.