JPS6130630Y2 - - Google Patents

Description

【考案の詳細な説明】 本考案は所定の軌道に沿つて被縫製物を移動さ
せることが出来る布押え装置を備えた自動ミシ
ン、サイクルミシン等の布押え機構に関するもの
である。[Detailed Description of the Invention] The present invention relates to a presser mechanism for an automatic sewing machine, a cycle sewing machine, etc., which is equipped with a presser device that can move a workpiece to be sewn along a predetermined trajectory.

従来、この種の装置として第１図、第２図に示
すものがあつた。第１図においてミシンアーム１
のベツド２上面に設けた押え台３はベツド２上面
においてミシンの布送り装置（図示しない）に連
動して前後、左右およびそれらの複合動するよう
摺動可能に支持し、この押え台３の先端部には薄
板状でほぼ縫製可能範囲の穴をくりぬいた下押え
板４が延設されている。その上方には〓状で下押
え板４の上記穴と重なる部分にほぼ同様な穴をく
りぬいた上押え板５が縦部５ａをガイドとして押
え台３の前端部に上下方向に摺動可能に取り付け
られ、かつ上下運動はピン６を支点とした押えバ
ネ７により行われる。また押えバネ７の中途部に
は押え台３をガイドとする押え棒８が上下に摺動
可能に取り付けられ一端は押えバネ７を抱くよう
に、他端には滑り子９が設けられ、押圧体１０の
下面と押接している。この滑り子９と押圧体１０
の当たり面は布送り装置のパタンに従つた移動に
より摺動するので摩擦が最小となるよう滑らかに
仕上げられている。押圧体１０には軸１０ａ回り
止めピン１０ｂが固定されミシンアーム１部に上
下自在に軸承され、図示していないが動力の供給
により下方へ押圧され滑り子９、押え棒８、押え
バネ７を介して上押え板５を下押え板４に押圧
し、上押え板５と下押え板４の間に挾んだ縫製物
をしつかりと挾持する。なお押え棒８は長さが調
整可能なように、ネジ体の組合わせで構成されて
いる。また１１は縫い針である。 Conventionally, there have been devices of this type as shown in FIGS. 1 and 2. In Figure 1, sewing machine arm 1
A presser foot 3 provided on the upper surface of the bed 2 is slidably supported on the upper surface of the bed 2 so that it can move back and forth, left and right, and in combination, in conjunction with the cloth feeding device (not shown) of the sewing machine. A lower pressing plate 4 is extended from the tip of the sewing machine in the form of a thin plate and has a hole cut out therein which can be easily sewn. Above it, an upper presser plate 5 is shaped like a triangle and has a substantially similar hole cut out in the area overlapping with the above-mentioned hole of the lower presser plate 4. The upper presser plate 5 is slidable vertically on the front end of the presser foot 3 using the vertical portion 5a as a guide. It is attached and vertical movement is performed by a presser spring 7 with the pin 6 as a fulcrum. In addition, a presser bar 8 is attached to the middle part of the presser spring 7 so as to be able to slide up and down with the presser foot 3 as a guide. It is pressed against the lower surface of the body 10. This slider 9 and pressing body 10
The contact surface of the cloth slides according to the pattern of the cloth feeding device, so it has a smooth finish to minimize friction. A shaft 10a and a locking pin 10b are fixed to the presser body 10, and supported on the sewing machine arm 1 so as to be able to freely move up and down, and are pressed downward by the supply of power (not shown), thereby locking the slider 9, the presser bar 8, and the presser spring 7. The upper presser plate 5 is pressed against the lower presser plate 4 through the upper presser plate 5, and the sewn article sandwiched between the upper presser plate 5 and the lower presser plate 4 is firmly clamped. Note that the presser rod 8 is constructed of a combination of screw bodies so that its length can be adjusted. Further, 11 is a sewing needle.

上記押圧体１０を押圧する動力を断てばヒネリ
バネ１２の力により第２図のごとく押えバネ７と
共に上押え板５は引き上げられ、被縫製物の出し
入れが自在となる。 When the power for pressing the presser body 10 is cut off, the upper presser plate 5 is pulled up together with the presser spring 7 by the force of the torsion spring 12 as shown in FIG. 2, and the workpiece can be taken in and out.

次に、動作について説明する。第２図が押圧体
１０への動力を断つた状態であり上押え板５が上
つた位置にある。この時被縫製物を下押え板４と
上押え板５の間に入れる。そして次に押圧体１０
への動力を供給すれば第１図に示すように上押え
板５が下方へ下がり被縫製物をしつかりと挾持
し、布送り装置のパターンに従つた移動とミシン
アーム１、縫針１１等の連動により縫目が形成さ
れ縫製が行われる。終了と同時に再び上押え板５
がヒネリバネ１２のバネ力により上昇するので、
完成した被縫製物を取り出して作業が完了する。 Next, the operation will be explained. FIG. 2 shows a state in which the power to the pressing body 10 is cut off, and the upper pressing plate 5 is in the raised position. At this time, the object to be sewn is placed between the lower presser plate 4 and the upper presser plate 5. Then, the pressing body 10
When power is supplied to the upper presser plate 5, as shown in Fig. 1, the upper presser plate 5 moves downward, firmly clamping the workpiece, and moves the sewing machine arm 1, sewing needle 11, etc. according to the pattern of the fabric feeding device. Stitches are formed and sewing is performed by interlocking. At the same time as the end, press the upper press plate 5 again.
rises due to the spring force of the twisting spring 12, so
The completed sewing work is taken out and the work is completed.

従来の布送り装置では上押え板５に回転モーメ
ントが働き押え腕３の上押え板摺動部にコジレが
生じ押圧体への動力の供給を解いた時、時々上押
え板が上昇しないというトラブルを招く欠点があ
つた。また構成部品の精度により押圧体１０と滑
り子９の接触面の平行が出ず片当たりを生ずると
いう欠点があつた。 In the conventional cloth feeding device, a rotational moment is applied to the upper presser plate 5, causing the upper presser plate sliding part of the presser arm 3 to twist, and when the power supply to the pressing body is released, the upper presser plate sometimes does not rise. There were drawbacks that led to this. Furthermore, due to the precision of the components, the contact surfaces of the pressing body 10 and the slider 9 are not parallel, resulting in uneven contact.

本考案は上記従来の課題に鑑みなされたもの
で、上押え板５を押え台３の上部に回動自在に軸
支された押え腕１３を介して取付け球面軸受１４
ａを介して押圧するようにした事により上押え板
５の動作が円滑に行われる布押え装置を提供する
ことを目的にしている。 The present invention was devised in view of the above-mentioned conventional problems, and the upper presser plate 5 is attached via a presser arm 13 rotatably supported on the upper part of the presser base 3 using a spherical bearing 14.
It is an object of the present invention to provide a cloth presser device in which the upper presser plate 5 can operate smoothly by pressing through the upper presser plate 5.

以下、本考案の一実施例を第３図、第４図、第
５図について説明する。第３図について枠体状の
上押え板５は取付台３の上部に軸ピンａ１４で回
動自在に軸支された押え腕１３の先端のコ字状に
分岐された分岐腕部１３ａと軸ピンｂ１５を介し
て上押え板５の両脇中途部が回転自在に軸承され
ている。さらに押え腕１３中途部には押え高さ調
整ネジ１６が固定されている。第４図に押え高さ
調整ネジの詳細を示す。１６ａは球面軸受で、内
輪に滑り子９が固着され、ブラケツト１６ｂに挿
入されており、ブラケツト１６ｂの下端部にはネ
ジが切られ押え腕１３にネジ込み、高さ調整を行
つて、止めナツト１６ｃで固定する。 An embodiment of the present invention will be described below with reference to FIGS. 3, 4, and 5. Regarding FIG. 3, the frame-shaped upper presser plate 5 has a U-shaped branched arm portion 13a at the tip of a presser arm 13 rotatably supported on the upper part of the mounting base 3 by a shaft pin a14, and a shaft. Midway portions on both sides of the upper presser plate 5 are rotatably supported via pins b15. Furthermore, a presser foot height adjustment screw 16 is fixed to the middle part of the presser arm 13. Figure 4 shows details of the presser foot height adjustment screw. Reference numeral 16a designates a spherical bearing, with a slider 9 fixed to its inner ring and inserted into a bracket 16b.The lower end of the bracket 16b is threaded and screwed into the presser arm 13, the height is adjusted, and the retaining nut is tightened. Fix it with 16c.

押圧体への動力の供給を断てばヒネリバネ１２
の力により第５図のごとく上押え板５は軸ピンａ
１４を支点として上がり被縫製物の出し入れが自
在となる。 If the power supply to the pressing body is cut off, the twisting spring 12
Due to the force of
14 as a fulcrum, and the workpiece to be sewn can be taken in and taken out freely.

次に、動作について説明する。第５図が押圧体
１０への動力の供給を断つた状態であり、第３図
が押圧体１０への動力の供給により押圧体１０が
下方へ押圧され滑り子９、押え高さ調整ネジ１
６、押え腕１３を介して上押え板５を下押え板４
に押圧し縫製物を挾持する。 Next, the operation will be explained. FIG. 5 shows a state in which the power supply to the pressing body 10 is cut off, and FIG.
6. Connect the upper presser plate 5 to the lower presser plate 4 via the presser arm 13.
Press down to hold the sewing item.

一連の動作の中で押え高さ調整ネジ１６は球面
軸受１６ａで第４図のように構成されているので
押圧体１０と滑り子９は常に平面で接触摺動出来
る状態に保たれている。 During a series of operations, the presser foot height adjusting screw 16 is constructed with a spherical bearing 16a as shown in FIG. 4, so that the pressing body 10 and the slider 9 are always maintained in a state where they can contact and slide on a plane.

以上のように本考案によればコジレ等の生じな
い滑らかな上押え板の動きが得られ、なおかつ球
面軸受により押圧体と押え棒の真直度を出す必要
がなくなり、常に押圧体と滑り子が平面接触の状
態で摺動し、片当たりによる異常摩耗コジレ等が
なくなり、信頼性の向上に著しいものがある。 As described above, according to the present invention, smooth movement of the upper presser plate without twisting etc. can be obtained, and the spherical bearing eliminates the need to maintain the straightness of the presser body and presser bar, so that the presser body and slider are always aligned. It slides in a state of planar contact, eliminating abnormal wear and twisting due to uneven contact, and significantly improving reliability.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図、第２図は従来の布押え機構を備えたミ
シンを示す側面図、第３図、第５図は本考案によ
る布押え機構を備えたミシンを示す側面図、第４
図は第３図の押え高さ調整ネジの詳細断面図、１
はミシンアーム、２はベツド、３は取付台、４は
下押え板、５は上押え板、１０は押圧体、１１は
縫針、１３は押え腕、１６ａは球面軸受である。
なお図中同一符号は同一又は相当部分を示す。 1 and 2 are side views showing a sewing machine equipped with a conventional presser foot mechanism, FIGS. 3 and 5 are side views showing a sewing machine equipped with a presser foot mechanism according to the present invention, and FIG.
The figure is a detailed sectional view of the presser foot height adjustment screw in Figure 3, 1
1 is a sewing machine arm, 2 is a bed, 3 is a mounting base, 4 is a lower presser plate, 5 is an upper presser plate, 10 is a presser body, 11 is a sewing needle, 13 is a presser arm, and 16a is a spherical bearing.
Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 上押え板と下押え板との間に布を挾み保持して
布と縫針とを相対的に移動し、またはそれらを同
時、各別に移動し布の所望箇所を縫うミシンの布
押え機構において、ベツドに平行する面を持ち常
にその平面を維持して垂直に上下動可能とした押
圧体を、取付台に上押え板を回動自在に軸承した
押え腕を介して支持し、かつ押え腕の中間部に球
面軸受を保持して、前記押圧体と係合するように
関連配置したことを特徴とするミシンの布押え機
構。 In the fabric presser mechanism of a sewing machine, which holds the fabric between an upper presser plate and a lower presser plate and moves the fabric and sewing needle relative to each other, or moves them simultaneously or separately to sew a desired location on the fabric. , a presser body that has a surface parallel to the bed and can move up and down vertically while always maintaining that plane is supported via a presser arm that rotatably supports an upper presser plate on a mounting base, and the presser arm A presser foot mechanism for a sewing machine, characterized in that a spherical bearing is held in an intermediate portion of the presser foot mechanism, and the presser foot mechanism is arranged in relation to the presser body so as to engage with the presser body.