JPH08112472A - Cloth pressure of sewing machine - Google Patents
Cloth pressure of sewing machineInfo
- Publication number
- JPH08112472A JPH08112472A JP6253595A JP25359594A JPH08112472A JP H08112472 A JPH08112472 A JP H08112472A JP 6253595 A JP6253595 A JP 6253595A JP 25359594 A JP25359594 A JP 25359594A JP H08112472 A JPH08112472 A JP H08112472A
- Authority
- JP
- Japan
- Prior art keywords
- cloth
- pressing member
- locking
- sewing machine
- sewing
- 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]
【産業上の利用分野】本発明は、ミシン機枠に上下動可
能に支持される押え棒と、前記押え棒又はその押え棒に
連結された部材に回動可能に支持され、ミシンベッド面
に載置された加工布を押圧するための布押え部材と、前
記布押え部材の回動を係止する係止手段と、前記係止手
段により係止された前記布押え部の係止状態を解除する
解除手段とを有するミシンの布押え装置に関するもので
ある。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a presser bar movably supported on a machine frame of a sewing machine and a presser bar or a member connected to the presser bar so that the presser bar can be rotatably supported on a sewing machine bed. The cloth pressing member for pressing the placed work cloth, the locking means for locking the rotation of the cloth pressing member, and the locking state of the cloth pressing portion locked by the locking means are described. The present invention relates to a cloth presser device for a sewing machine having a releasing means for releasing.
【０００２】[0002]
【従来の技術】従来、この種のミシンの布押え装置は、
例えば特公昭５６ー１７１１１号公報に開示されてい
る。その概略構成は、図７に示すように、ミシン頭部５
１の機枠５３内には針５５が装着された針棒５７が上下
動可能に支持されており、図示しない周知の機構を介し
て上下往復駆動される。また機枠５３内には押え棒５９
が頭部５１下部の機枠５３に設けられたブッシング６１
に遊嵌して上下動可能に支持されている。そのブッシン
グ６１の機枠５３外には直角に曲げられたピン６３を配
設している。そして、押え棒５９の下端にはホルダ６５
を固定する一方、上端では球６７を介して既知の方法で
機枠５３内に固定されている板バネ６９が押え棒５９を
下方に付勢している。押え棒５９と板バネ６９の球欠状
の凹部によって球６７の位置が固定される。ミシン機枠
５３に回動可能に支持されたハンドレバ７０は周知の機
構を介して押え棒５９を上下に移動させる。2. Description of the Related Art Conventionally, this type of sewing machine foot presser has
For example, it is disclosed in Japanese Patent Publication No. 56-17111. As shown in FIG. 7, the schematic configuration of the sewing machine head 5
A needle bar 57 on which a needle 55 is mounted is supported in the one machine frame 53 so as to be vertically movable, and is reciprocated up and down through a well-known mechanism (not shown). A holding rod 59 is provided in the machine frame 53.
Is a bushing 61 provided on a machine frame 53 below the head 51.
And is supported to be vertically movable. Outside the machine frame 53 of the bushing 61, a pin 63 bent at a right angle is arranged. A holder 65 is provided at the lower end of the holding rod 59.
At the upper end, a leaf spring 69 fixed in the machine frame 53 via a ball 67 in a known manner urges the pressing rod 59 downward. The position of the ball 67 is fixed by the pressing bar 59 and the ball-shaped concave portion of the leaf spring 69. The hand lever 70 rotatably supported by the sewing machine frame 53 moves the presser bar 59 up and down via a known mechanism.
【０００３】ホルダ６５の下部に布押え部材７１がピン
７３によって回動可能に支持されており、その布押え部
材７１には図中左方に延びるフォーク腕７１ａが設けら
れ、そのフォーク腕７１ａの端部には係止ピン７５がも
うけられている。一方、布押え部材７１の回動範囲はホ
ルダ６５のストッパ面６５ａ及び６５ｂによって規制さ
れている。ストッパ面６５ａと布押え部材７１との間に
配設された圧縮バネ７７は図中反時計回りの回転モーメ
ントを布押え部材７１に与えている。また、ホルダ６５
には腕６５ｃが形成されており、その腕６５ｃに設けら
れた支軸７９にロック要素８１が枢着されている。ロッ
ク要素８１の下部には前記係止ピン７５と係合可能な係
合部８１ａを備えている。その係合部８１ａと係止ピン
７５とが係合すると、圧縮バネ７７によって生じる回転
モーメントにより係止ピン７５と係合部８１ａとが摩擦
結合して、布押え部材７１の回動を係止する。A cloth holding member 71 is rotatably supported by a pin 73 below the holder 65. The cloth holding member 71 is provided with a fork arm 71a extending leftward in FIG. A locking pin 75 is provided at the end. On the other hand, the rotation range of the cloth pressing member 71 is restricted by the stopper surfaces 65a and 65b of the holder 65. A compression spring 77 provided between the stopper surface 65a and the presser foot member 71 applies a counterclockwise rotational moment to the presser foot member 71 in the figure. Also, the holder 65
Is formed with an arm 65c, and a lock element 81 is pivotally mounted on a support shaft 79 provided on the arm 65c. The lower part of the lock element 81 is provided with an engagement portion 81a that can be engaged with the locking pin 75. When the engaging portion 81a and the locking pin 75 are engaged, the locking pin 75 and the engaging portion 81a are frictionally coupled by the rotational moment generated by the compression spring 77, and the rotation of the cloth pressing member 71 is locked. I do.
【０００４】支軸７９を挿通し、前記腕６５ｃ及びロッ
ク要素８１に係合しているねじりバネ８３は、ロック要
素８１を図中反時計方向に付勢しており、係止ピン７５
と前記係合部８１ａとが係合するロック位置からロック
要素８１が解放されると、ロック要素８１をホルダ６５
のストッパ部６５ｄによって規制された遮断位置に回動
させる。更に、ロック要素８１の上部には傾斜面８１ｂ
が設けられている。A torsion spring 83 inserted through the support shaft 79 and engaged with the arm 65c and the lock element 81 urges the lock element 81 counterclockwise in the figure.
When the lock element 81 is released from the lock position where the lock element 81 is engaged with the engagement portion 81a, the lock element 81 is
Is rotated to the blocking position regulated by the stopper portion 65d. Further, an inclined surface 81b is provided above the locking element 81.
Is provided.
【０００５】布押え部材７１下方のミシンベッド面８４
にはスリット８５ａを設けた針板８５が配設されてい
る。送り歯８７がスリット８５ａを通って周知の四運動
送りをすることにより、布押え部材７１と共動して加工
布Ｎに送りを与える。[0005] The sewing machine bed surface 84 below the presser foot member 71.
Is provided with a needle plate 85 having a slit 85a. The feed dog 87 feeds the work cloth N in cooperation with the cloth pressing member 71 by performing a known four-motion feed through the slit 85a.
【０００６】押え棒５９を上昇させて、布押え部材７１
が加工布Ｎまたは針板８５から上昇されると直ちに、布
押え部材７１は圧縮バネ７７によりストッパ面６５ｂに
接する。押え棒５９を更に上昇すると、ロック要素８１
の傾斜面８１ｂがピン６３に当たり、押え棒５９の上昇
に伴って、ピン６３と傾斜面８１ｂとが当接して、ロッ
ク要素８１をねじりバネ８３に抗してロック位置に回動
する。この際前記係合部８１ａと係止ピン７５とが係合
する。そのときねじりバネ８３はロック要素８１を図中
反時計方向に付勢している、つまり布押え部材７１の係
止を解除する方向に付勢しているが、その付勢力は係止
ピン７５にかかる圧縮バネ７７による図中反時計方向回
りの回転モーメントにより生じる摩擦力より小さく設定
されているので、布押え部材７１をミシンベッド面８４
に対して平行に保持する。[0006] The presser bar 59 is raised and the cloth presser member 71 is pressed.
As soon as is lifted from the work cloth N or the needle plate 85, the cloth holding member 71 comes into contact with the stopper surface 65b by the compression spring 77. When the presser bar 59 is further raised, the locking element 81
The inclined surface 81b contacts the pin 63, and the pin 63 and the inclined surface 81b come into contact with the rise of the presser bar 59, and the lock element 81 is rotated to the lock position against the torsion spring 83. At this time, the engaging portion 81a and the locking pin 75 are engaged with each other. At this time, the torsion spring 83 urges the lock element 81 in the counterclockwise direction in the figure, that is, urges the lock element 81 in the direction to release the lock of the cloth pressing member 71. Is set to be smaller than the frictional force generated by the rotational moment in the counterclockwise direction in FIG.
Hold parallel to.
【０００７】そして、縫製が加工布Ｎの縁から始まる場
合には、その縁を針５５の下に配置した後、押え棒５９
を下降して布押え部材７１を加工布Ｎ上に置く。このと
き、板バネ６９の圧力は押え棒５９を介して布押え部材
７１に作用し、その力はピン７３を介して布押え部材７
１に伝達される。この為に図中反時計回りの回転モーメ
ントが布押え部材７１に針５５の下側にある加工布Ｎの
縁の回りで作用する、すなわち前記係止ピン７５が前記
係合部８１ａを下方に付勢する。When the sewing starts from the edge of the work cloth N, the edge is arranged below the needle 55 and then the presser bar 59 is pressed.
Is moved down to place the cloth holding member 71 on the work cloth N. At this time, the pressure of the leaf spring 69 acts on the cloth pressing member 71 via the pressing rod 59, and the force is applied via the pin 73 to the cloth pressing member 7.
1 is transmitted. Therefore, a counterclockwise rotation moment in the figure acts on the cloth pressing member 71 around the edge of the work cloth N below the needle 55, that is, the locking pin 75 moves the engaging portion 81a downward. Energize.
【０００８】縫製が開始され加工布Ｎの縁がピン７３の
背後に送られると直ちに圧縮バネ７７と板バネ６９とか
らの布押え部材７１に作用している図中反時計回りの回
転モーメントがなくなる。すると、ねじりバネ８３によ
り係止ピン７５が前記係合部８１ａより離れ、ロック要
素８１が前記ロック位置から前記遮断位置に回動され
て、布押え部材７１が回動可能な状態となる。As soon as the sewing is started and the edge of the work cloth N is fed behind the pin 73, the counterclockwise rotation moment acting on the cloth holding member 71 from the compression spring 77 and the leaf spring 69 in the figure is generated. Disappears. Then, the torsion spring 83 separates the locking pin 75 from the engaging portion 81a, the locking element 81 is rotated from the locking position to the blocking position, and the cloth pressing member 71 becomes rotatable.
【０００９】[0009]
【発明が解決しようとする課題】しかしながら、上述し
た構成の布押え装置は、係止ピン７５にかかる圧縮バネ
７７による回転モーメントにより生じる摩擦力によって
布押え部材７１の回動を係止するので、加工布Ｎがピン
７３の背後に送られる前に振動によって布押え部材７１
の係止状態が解除されることがある。その解除された状
態で押え棒５９を下げると、加工布Ｎに接することによ
り布押え部材７１が回動して布押え部材７１の布送り出
し側が針板８５に付勢された状態となり、縫製を開始す
ると加工布Ｎの前端が布押え部材７１の布送りだし側に
阻止されて送られずに縫製不良が起こる。また、布押え
部材７１に作用している回転モーメントがなくなると、
ねじりバネ８３によって上述した係止状態を解除するの
で、加工布Ｎがピン７３の背後に送られても係止状態が
解除されないことがある。解除されないと縫製中の加工
布Ｎの段差に応じて布押え部材７１が加工布Ｎを押圧で
きずに縫製不良が起こるといった問題があった。However, since the cloth pressing device having the above-mentioned structure locks the rotation of the cloth pressing member 71 by the frictional force generated by the rotation moment of the compression spring 77 applied to the locking pin 75, Before the work cloth N is sent to the back of the pin 73, the work cloth N is vibrated before being pressed.
The locked state of may be released. When the presser bar 59 is lowered in the released state, the cloth presser member 71 rotates by coming into contact with the work cloth N, and the cloth feeding side of the cloth presser member 71 is urged by the needle plate 85, and sewing is performed. When started, the front end of the work cloth N is blocked by the cloth feed side of the work holding member 71 and is not fed, resulting in sewing failure. In addition, when the rotational moment acting on the presser foot member 71 disappears,
Since the above-mentioned locked state is released by the torsion spring 83, the locked state may not be released even when the work cloth N is sent behind the pin 73. If the work cloth N is not released, there is a problem that the cloth pressing member 71 cannot press the work cloth N in accordance with the step of the work cloth N being sewn, and sewing failure occurs.
【００１０】本発明は、上述した問題点を解決するため
になされたものであり、布押え部材の係止状態において
振動があってもその係止を維持し、加工布が布押えの背
後に送られたときに係止状態を確実に解除するミシンの
布押え装置を提供することを目的とする。The present invention has been made in order to solve the above-mentioned problems, and maintains the lock even when vibration occurs in the locked state of the cloth pressing member, and the work cloth is placed behind the cloth pressing member. An object of the present invention is to provide a cloth pressing device for a sewing machine that reliably releases the locked state when it is sent.
【００１１】[0011]
【課題を解決するための手段】この目的を達成するため
に本発明の請求項１記載のミシンの布押え装置は、布押
え部材に設けられた被係合部に係合可能な係合部を有
し、被係合部に係合して、ミシンベッド面に対して布押
え部材の下面が平行になるように布押え部材を係止する
係止位置と、被係合部から離間して係止状態を解除する
解除位置との間を回動可能に、押え棒又はその押え棒に
連結された部材に支持される係止部材と、係止位置に係
止部材を保持する保持手段と、係止位置に保持された係
止部材と連結するように設けられ、縫製開始にともなっ
て送られる布と係合することによって、係止部材を解除
位置側へ回動する解除手段とを備えている。In order to achieve this object, a cloth pressing device for a sewing machine according to claim 1 of the present invention is an engaging portion engageable with an engaged portion provided on a cloth pressing member. And the engaging position for engaging the engaged portion so as to engage the cloth pressing member so that the lower surface of the cloth pressing member is parallel to the sewing machine bed surface, and separate from the engaged portion. Locking member that is supported by the presser bar or a member connected to the presser bar so as to be rotatable between a release position that releases the locked state and a holding unit that holds the locking member in the lock position. And a releasing means which is provided so as to be connected to the retaining member held at the retaining position and which engages with the cloth fed at the start of sewing to rotate the retaining member toward the releasing position. I have it.
【００１２】また、請求項２記載のミシンの布押え装置
は、係止位置と解除位置との間の所定の位置を境界とし
て係止部材を両位置に付勢する保持部材を備えている。The cloth pressing device for a sewing machine according to a second aspect of the present invention includes a holding member for urging the locking member to both positions with a predetermined position between the locking position and the releasing position as a boundary.
【００１３】[0013]
【作用】上記の構成を有する本発明の請求項１記載のミ
シンの布押え装置においては、押え棒又はその押え棒に
連結された部材に回動可能に支持された布押え部材には
被係合部が設けられており、その被係合部に係合可能な
係合部を有する係止部材は、被係合部に係合して、ミシ
ンベッド面に対して布押え部材の下面が平行になるよう
に布押え部材を係止する係止位置と、被係合部から離間
して係止状態を解除する解除位置との間を回動可能に押
え棒又はその押え棒に連結された部材に支持されてい
る。そして、係止部材は保持手段により係止位置に保持
される。また、係止部材には布検知手段が設けられてい
る。該布検知手段は縫製開始にともなって送られる布に
接触し、係止位置に回動された係止部材を布の移動につ
れて保持手段に抗じて解除位置側へ押圧せしめる。その
結果、係止部材が解除位置に回動されて係止が解除され
る。In the cloth presser device for a sewing machine according to claim 1 of the present invention having the above-mentioned structure, the cloth presser member rotatably supported by the presser bar or a member connected to the presser bar is engaged. The engaging member is provided with a mating portion and has an engaging portion that can engage with the engaged portion. The presser bar or the presser bar is rotatably connected between a locking position for locking the cloth pressing member so as to be parallel and a releasing position for releasing the locked state by separating from the engaged portion. It is supported by a member. Then, the locking member is held at the locking position by the holding means. Further, the locking member is provided with cloth detection means. The cloth detecting means comes into contact with the cloth fed at the start of sewing and presses the locking member rotated to the locking position against the holding means as the cloth moves toward the releasing position. As a result, the locking member is rotated to the release position and the locking is released.
【００１４】また、請求項２記載のミシンの布押え装置
においては、保持手段が係止部材を解除位置または係止
位置に保持する。そして、布検知手段が縫製開始にとも
なって布に接触するのにともない、係止部材が保持部材
の付勢力に抗じて解除位置に回動されて係止が解除され
る。Further, in the cloth pressing device for a sewing machine according to the second aspect, the holding means holds the locking member at the releasing position or the locking position. Then, as the cloth detection means comes into contact with the cloth at the start of sewing, the locking member is rotated to the release position against the biasing force of the holding member, and the locking is released.
【００１５】[0015]
【実施例】以下、本発明を具体化した一実施例を図面を
参照して説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１６】図１（ａ）に示すように、ミシン頭部１の
機枠３内には針５が装着された針棒７が上下動可能に支
持されており、図示しない周知の機構を介して上下往復
駆動される。また機枠３に押え棒９が上下動可能に支持
されており、その押え棒９には図１（ｂ）中右方に伸び
たアーム部１１ａを有する押え棒抱き１１が押え棒抱き
止めネジ１３により固定されている。その押え棒抱き止
めネジ１３と機枠３とに取り付けられた押えバネ１５は
押え棒９を常に下方へ付勢している。前記アーム部１１
ａは機枠３に回動可能に支持された押え上げ１７に当接
しており、その押え上げ１７の回動操作により加工布を
押圧して縫製を行うための縫製位置と、加工布の出し入
れを行う布出入位置と、厚い加工布の出し入れを行うた
めの厚布出入位置との三カ所に押え棒９を上下動させる
ことができる。As shown in FIG. 1A, a needle bar 7 having a needle 5 mounted thereon is supported in a machine frame 3 of a sewing machine head 1 so as to be vertically movable, and a known mechanism (not shown) is used. It is reciprocally driven up and down. A presser bar 9 is supported by the machine frame 3 so as to be able to move up and down, and the presser bar 9 has a presser bar holding screw 11 having an arm portion 11a extending rightward in FIG. 13 fixed. The presser bar retaining screw 13 and the presser spring 15 attached to the machine frame 3 constantly urge the presser bar 9 downward. The arm portion 11
a is in contact with a presser foot 17 rotatably supported by the machine frame 3, and a sewing position for performing sewing by pressing a work cloth by the rotation operation of the presser foot 17; The presser bar 9 can be moved up and down to three positions, ie, a cloth loading / unloading position for carrying out the operation and a thick cloth loading / unloading position for loading / unloading the thick work cloth.
【００１７】布押え部材２３には一対の壁部Ｋ（一方の
み図示）が突出しており、その２つの壁部Ｋ間にはピン
２５が架設されている。この布押え部材２３は押え棒９
の下端に固定されたホルダ１９の下部に前記ピン２５を
介して回動可能且つ着脱可能に連結されている。また、
前記ホルダ１９の側部にはロックレバ２９が段付ネジ３
１により回動可能に取り付けられており、このロックレ
バ２９に貫通形成された長孔２９ｂを貫通してピン２７
がホルダ１９の側部に突設されている。前記ロックレバ
２９の下部には前記布押え部材２３の壁部Ｋから布送り
出し側に突設された被係合部２３ａに係合可能な凹部２
９ａが形成されている。A pair of wall portions K (only one is shown) project from the cloth pressing member 23, and a pin 25 is provided between the two wall portions K. This cloth pressing member 23 is a presser bar 9
It is rotatably and detachably connected to the lower part of the holder 19 fixed to the lower end of the pin via the pin 25. Also,
A lock lever 29 is provided on the side of the holder 19 with a stepped screw 3
1 is rotatably attached to the lock lever 29, and the pin 27 is inserted through the long hole 29b formed through the lock lever 29.
Is provided on the side of the holder 19. In the lower part of the lock lever 29, a recess 2 is formed which can be engaged with an engaged portion 23a projecting from the wall portion K of the cloth pressing member 23 on the cloth feeding side.
9a is formed.
【００１８】そして、前記被係合部２３ａと前記凹部２
９ａとが係合して、ミシンベッド面２１に対して布押え
部材２３の下面が水平になるように布押え部材２３を係
止する位置を係止位置（図２（ａ）参照）と称す。ま
た、前記凹部２９ａが前記被係合部２３ａから離間して
前記係止を解除する位置を解除位置（図２（ｂ）参照）
と称す。前記ピン２７と前記長孔２９ｂとによりロック
レバ２９の回動が制限され、ロックレバ２９は前記係止
位置と前記解除位置との間を回動可能である。The engaged portion 23a and the recess 2
The position where the cloth pressing member 23 is locked so that the lower surface of the cloth pressing member 23 is horizontal with respect to the sewing machine bed surface 21 is referred to as a locking position (see FIG. 2A). . Further, the position where the recess 29a is separated from the engaged portion 23a to release the locking is a release position (see FIG. 2B).
Called. The rotation of the lock lever 29 is restricted by the pin 27 and the elongated hole 29b, and the lock lever 29 is rotatable between the locking position and the releasing position.
【００１９】また、ロックレバ２９には、山形状部３３
ａを有するノッチ板３３がカシメ軸３２によって取り付
けられている。その山形状部３３ａはピン２７と係合し
て、前記係止位置と前記解除位置との間の所定の位置を
境界としてロックレバ２９を両位置にネジリバネ３３ｂ
によって付勢している。更にロックレバ２９には曲げ部
２９ｃが設けられている。押え上げ１７を前記厚布出入
位置に操作すると、その操作による押え棒９の上昇にと
もなって、曲げ部２９ｃがミシン機枠３に設けられた当
接部３ａと接して、ロックレバ２９を前記係止位置に回
動する。The lock lever 29 has a mountain-shaped portion 33.
A notch plate 33 having a is attached by a caulking shaft 32. The mountain-shaped portion 33a is engaged with the pin 27, and the lock lever 29 is placed at both positions with the predetermined position between the locking position and the releasing position as a boundary.
Is urged by. Further, the lock lever 29 is provided with a bent portion 29c. When the presser foot 17 is operated to the thick cloth loading / unloading position, the bending part 29c comes into contact with the contact part 3a provided on the sewing machine frame 3 as the presser bar 9 is lifted by the operation, and the lock lever 29 is engaged. Rotate to the stop position.
【００２０】更に、図２を参照し、ロックレバ２９の下
端には布検知レバー３５がカシメ軸３４によって回動可
能に取り付けられており、ネジリバネ３５ｂによってロ
ックレバー２９ｄに対し反時計方向に付勢されている。
尚、布検知レバー３５を付勢する付勢力はロックレバー
２９を前記係止位置へ付勢する付勢力よりも強く設定さ
れている。Further, referring to FIG. 2, a cloth detection lever 35 is rotatably attached to the lower end of the lock lever 29 by a caulking shaft 34, and is biased counterclockwise with respect to the lock lever 29d by a torsion spring 35b. ing.
The urging force that urges the cloth detection lever 35 is set to be stronger than the urging force that urges the lock lever 29 to the locking position.
【００２１】そして、前記係止位置に回動されたロック
レバ２９を押圧可能な押圧部２３ｂが布押え部材２３の
布送り出し側に設けられている。その押圧部２３ｂは段
部縫製の下りに布押え部材２３の布送り込み側の先端が
所定量下がったときにノッチ板３３の山形状部３３ａと
ピン２７との係合による前記係止位置への付勢力に抗し
て、ロックレバ２９を前記境界位置を越して前記解除位
置側へ押圧する。このため、段部の縫い方向の幅が狭い
ときは布検知レバー３５の布検知部３５ａが布段差部に
接触する前に、布押え部材２３の布送り込み側の先端が
所定量下がると、ロックレバ２９が解除位置側へ付勢さ
れて布押え部材２３の係止を確実に解除する。A pressing portion 23b capable of pressing the lock lever 29 rotated to the locking position is provided on the cloth feeding side of the cloth pressing member 23. When the tip of the cloth pressing member 23 on the cloth feeding side is lowered by a predetermined amount during the downward sewing of the step sewing, the pressing portion 23b is brought into the locking position by the engagement between the mountain-shaped portion 33a of the notch plate 33 and the pin 27. The lock lever 29 is pushed to the release position side beyond the boundary position against the biasing force. Therefore, when the width of the step portion in the sewing direction is narrow, if the tip of the cloth pressing member 23 on the cloth feeding side is lowered by a predetermined amount before the cloth detecting portion 35a of the cloth detecting lever 35 contacts the cloth step portion, the lock lever is lowered. 29 is urged toward the release position to reliably release the lock of the cloth pressing member 23.
【００２２】又、図５に示すように布端からの縫製の場
合は段差が無く布押さえ部材２３がミシンベッド面２１
に対して平行な状態のままになるので押厚部２３ｂでロ
ックレバーを前記解除位置へ回動させることはできな
い。従って前記布検知レバー３５が送り出された布と接
触する事で布送りにつれてロックレバー２９を前記境界
位置を越して前記解除位置へ回動せしめる。Further, as shown in FIG. 5, when sewing from the cloth end, there is no step and the cloth pressing member 23 is the sewing machine bed surface 21.
The lock lever cannot be rotated to the release position by the pressing portion 23b because it remains parallel to the lock lever. Therefore, when the cloth detection lever 35 comes into contact with the fed cloth, the lock lever 29 is moved to the release position beyond the boundary position as the cloth is fed.
【００２３】そして、布押え部材２３下方のミシンベッ
ド面２１には布送り方向に伸びるスリット３７ａを設け
た針板３７が配設されている。そして、送り歯３９がス
リット３７ａを通って周知の四運動送りをすることによ
り、布押え部材２３と共動して加工布Ｎに送りを与え
る。A needle plate 37 provided with a slit 37a extending in the cloth feeding direction is disposed on the sewing machine bed surface 21 below the cloth pressing member 23. Then, the feed dog 39 performs the well-known four-motion feed through the slits 37a, thereby feeding the work cloth N in cooperation with the cloth pressing member 23.
【００２４】次に、上述した構成のミシンの布送り装置
の動作について図面を参照して説明する。Next, the operation of the cloth feeding device of the sewing machine having the above-mentioned structure will be described with reference to the drawings.
【００２５】図３（ａ）に示すように、厚い加工布Ｎを
その前端から縫製する場合、その加工布Ｎを針５下のミ
シンベッド面２１に配置するために押え上げ１７を前記
厚布出入位置に操作すると、その操作による押え棒９の
上昇にともなって、前記当接部３ａに前記曲げ部２９ｃ
が接することにより、前記ノッチ板３３の山形状部３３
ａとピン２７との係合による前記解除位置への付勢力に
抗して、ロックレバ２９を前記境界位置を越えて係止位
置側に回動する。このとき布押え部材２３の下面が水平
になる状態で凹部２９ａと前記被係合部２３ａとが係合
し、かつノッチ板３３の係止位置への付勢力により布押
え部材２３が係止されている。As shown in FIG. 3 (a), when the thick work cloth N is sewn from its front end, the presser foot lifter 17 is provided to dispose the work cloth N on the sewing machine bed surface 21 under the needle 5. When it is operated to the in / out position, the bending portion 29c is attached to the contact portion 3a as the presser bar 9 is raised by the operation.
Are in contact with each other, so that the mountain-shaped portion 33 of the notch plate 33
The lock lever 29 is rotated to the locking position side beyond the boundary position against the urging force to the release position due to the engagement between the a and the pin 27. At this time, the recess 29a and the engaged portion 23a are engaged with each other while the lower surface of the cloth pressing member 23 is horizontal, and the cloth pressing member 23 is locked by the urging force of the notch plate 33 to the locking position. ing.
【００２６】次に、図３（ｂ）に示すように、加工布Ｎ
を針５下のミシンベッド面２１に配置した後、布押え部
材２３が加工布Ｎを押圧する前記縫製位置に押え上げ１
７を操作する。このとき、布押え部材２３の布送り出し
側は、針板３７から上昇した状態となっている。Next, as shown in FIG. 3B, the work cloth N
Is placed on the sewing machine bed surface 21 under the needle 5, and then the presser foot 1 is raised to the sewing position where the cloth presser member 23 presses the work cloth N.
Operate 7 At this time, the cloth feed-out side of the cloth pressing member 23 is in a state of being lifted from the needle plate 37.
【００２７】そして、縫製が開始されると、図３（ｃ）
に示すように、前記送り歯３９と布押え部材２３との共
動によって加工布Ｎが円滑に送られ、加工布Ｎの前端が
前記ピン２５を通過すると、布押え部材２３は係止状態
からミシンベッド面２１（針板３７）に対して前下がり
の状態に回動する。その際に、前記押圧部２３ｂは前記
板バネ３３の前記係止位置への付勢力に抗して前記境界
位置を越えて前記解除位置側へロックレバ２９を押圧す
る。すると、ノッチ板３３がロックレバ２９を前記解除
位置に付勢することにより前記係止が解除される。Then, when sewing is started, FIG.
As shown in FIG. 4, the work cloth N is smoothly fed by the cooperation of the feed dog 39 and the cloth pressing member 23, and when the front end of the work cloth N passes through the pin 25, the cloth pressing member 23 is released from the locked state. The sewing machine bed surface 21 (needle plate 37) is rotated in the front downward direction. At this time, the pressing portion 23b presses the lock lever 29 toward the release position beyond the boundary position against the urging force of the leaf spring 33 toward the locking position. Then, the notch plate 33 biases the lock lever 29 to the release position to release the lock.
【００２８】また、図４（ａ）に示すように、縫製作業
中に布押え部材２３の布送り込み側が極端に上がるよう
な加工布Ｎの段差があると、作業者はその段差の手前で
縫製を中断する。そして、図４（ｂ）に示すように、押
え上げ１７を前記厚布出入位置に操作すると、前述した
ように布押え部材２３の回動が係止される。図４（ｃ）
に示すように、布押え部材２３が加工布Ｎを押圧する前
記縫製位置に押え上げ１７を操作した後、縫製を開始す
る。すると、前述したように布押え部材２３の係止が解
除される。Further, as shown in FIG. 4 (a), if there is a step of the work cloth N such that the cloth feeding side of the cloth pressing member 23 is extremely raised during the sewing operation, the operator sewn in front of the step. To suspend. Then, as shown in FIG. 4 (b), when the presser foot 17 is operated to the above-mentioned heavy cloth in / out position, the rotation of the cloth presser member 23 is locked as described above. Figure 4 (c)
As shown in (1), after the presser foot 17 is operated to the sewing position where the cloth presser member 23 presses the work cloth N, sewing is started. Then, the lock of the cloth pressing member 23 is released as described above.
【００２９】また、図５（ａ）に示すように、布端から
の縫製で布押さえ部材２３の布送り込みが極端に上がる
ような場合は前述の縫製作業と同様に作業者はその布端
位置で押さえ上げ１７を前記縫製位置に操作し、布押さ
え部材２３の布送り出し側を針板３４から浮かせた状態
にして縫製を開始する。そして、布端が布押さえ部材２
３の布送り出し付近まで送られるとロックレバー２９の
下端にある布検知レバー３５の布検知部３５ａが布端に
よって布送り方向へ押され、ロックレバー２９は前記解
除位置へ回動される。Further, as shown in FIG. 5 (a), when the cloth feeding of the cloth pressing member 23 is extremely increased by the sewing from the cloth end, the operator performs the cloth end position similarly to the above sewing work. The presser lifting 17 is operated to the sewing position with and the sewing is started with the cloth feed-out side of the cloth pressing member 23 being lifted from the needle plate 34. The cloth edge is the cloth pressing member 2.
When the cloth is fed to the vicinity of the cloth feeding position 3, the cloth detecting portion 35a of the cloth detecting lever 35 at the lower end of the lock lever 29 is pushed in the cloth feeding direction by the cloth end, and the lock lever 29 is rotated to the release position.
【００３０】次に段縫い後の布検知レバー３５の状態を
図６にて説明する。Next, the state of the cloth detection lever 35 after the step sewing will be described with reference to FIG.
【００３１】段差部が布押さえ２３の布送り出し位置に
達すると前記布検知レバー３５はネジリバネ３５ｂの働
きによりロックレバー２９を前記解除位置へ回動させた
後、更にカシメ軸３４を中心に回動するので布押さえ２
３はスムースに段差を降りることができる。When the step reaches the cloth feeding position of the cloth presser 23, the cloth detecting lever 35 rotates the lock lever 29 to the releasing position by the action of the torsion spring 35b, and then further rotates around the caulking shaft 34. Since it does, cloth holder 2
3 can get off the step smoothly.
【００３２】このように本発明のミシンの布送り装置
は、厚い加工布Ｎの縫製開始時や、縫製中に布押え部材
２３の布送り込み側の先端が極端に上がるような段差が
ある場合に、押え上げ１７を前記厚布出入位置に操作す
る。すると、布押え部材２３の下面が水平になるように
布押え部材２３の回動を係止する。そして、押え上げ１
７を前記縫製位置に操作して縫製を開始すると、加工布
Ｎの送りにより布厚変化にともない布押え部材２３がミ
シンベッド面２１に対して前下がりの状態に回動され
て、前記係止が解除され、あるいは加工布の送りにより
布検知レバー３５を介して前記係止が解除されるので、
加工布Ｎが送り込まれにくくなって縫製不良が起きるこ
とがない。また、ノッチ板３３による前記境界位置を境
とした前記係止位置と前記解除位置との付勢により、係
止状態の時に振動があっても係止が維持される。As described above, the cloth feeding device for a sewing machine of the present invention is used when starting to sew a thick work cloth N or when there is a step such that the tip of the cloth pressing member 23 on the cloth feeding side is extremely raised during sewing. , The presser foot lifter 17 is operated to the above-mentioned thick cloth loading / unloading position. Then, the rotation of the cloth pressing member 23 is locked so that the lower surface of the cloth pressing member 23 becomes horizontal. And presser foot 1
When 7 is operated to the sewing position and sewing is started, the work cloth N is fed and the cloth pressing member 23 is rotated in the front downward direction with respect to the sewing machine bed surface 21 due to the change in the cloth thickness, and the locking is performed. Is released, or the work cloth is fed to release the locking through the cloth detection lever 35,
The work cloth N is less likely to be fed in, so that sewing failure does not occur. Further, the notch plate 33 urges the locking position and the releasing position with the boundary position as a boundary, so that the locking is maintained even if vibration occurs in the locked state.
【００３３】尚、本発明ではロックレバ２９に曲げ部２
９ｃが設けられているが、曲げ部２９ｃを設けないで、
押え上げ１７を前記布出入位置または前記厚布出入位置
に操作したとき、作業者がロックレバ２９を操作して前
記係止位置に回動させてもよい。In the present invention, the bent portion 2 is formed on the lock lever 29.
9c is provided, but the bent portion 29c is not provided,
When the presser foot 17 is operated to the cloth loading / unloading position or the thick cloth loading / unloading position, an operator may operate the lock lever 29 to rotate the lock lever 29 to the locking position.
【００３４】上述した実施例においては，弾性体の付勢
力によって布押え部材２３を係止位置に保持している
が、凹凸の係合により布押え部材２３を係止位置及び縫
製位置に位置させるようにしても良い。このように、弾
性体や凹凸を用いれば、安価に布押え装置を作成するこ
とができる。In the above-described embodiment, the cloth pressing member 23 is held at the locking position by the urging force of the elastic body, but the cloth pressing member 23 is positioned at the locking position and the sewing position by the engagement of the unevenness. You may do it. As described above, by using the elastic body or the unevenness, the cloth pressing device can be manufactured at low cost.
【００３５】[0035]
【発明の効果】以上説明したことから明かなように、本
発明の請求項１記載の布押え装置によれば、布押え部材
を係止状態にして布押え部材を加工布の端部や段部にそ
の布送り込み側で押圧するために、下降させる時、従来
のように振動により係止状態が解除されてしまうことが
なく、縫製が開始されて加工布の端部や段部が布押え部
材の布送り出し側に円滑に移動可能となり、その移動に
ともなって、段部の下りでは布押さえ部材の前下がりに
よって、また、布押え部材がミシンベッド面に対して平
行のままであっても、布の移動によって解除位置側へ押
圧するので確実に係止が解除されて、布押え部材が加工
布の凹凸に応じて回動して加工布を押圧することができ
る。As is apparent from the above description, according to the cloth pressing device of the first aspect of the present invention, the cloth pressing member is locked and the cloth pressing member is moved to the end portion or the step of the work cloth. Since it is pressed against the cloth feed side, when it is lowered, the locked state is not released by vibration unlike in the conventional case, and sewing is started and the end or step of the work cloth is pressed down. It becomes possible to move smoothly to the cloth feeding side of the member, and along with the movement, even if the cloth pressing member remains parallel to the sewing machine bed surface due to the front lowering of the cloth pressing member at the step down. Since the cloth is pressed toward the release position side by the movement of the cloth, the locking is surely released, and the cloth pressing member can be rotated according to the unevenness of the work cloth to press the work cloth.
【００３６】請求項２記載のミシンの布押え装置によれ
ば、保持部材が係止位置に布押え部材を付勢しており、
確実に係止状態を維持できる。According to the cloth pressing device of the sewing machine of the second aspect, the holding member biases the cloth pressing member to the locking position,
The locked state can be reliably maintained.
【図１】（ａ）は本発明の一実施例を具体化したミシン
の布押え装置の正面図である。（ｂ）は上記ミシンの布
押え装置の側面図である。FIG. 1A is a front view of a cloth pressing device for a sewing machine embodying an embodiment of the present invention. (B) is a side view of the cloth pressing device of the sewing machine.
【図２】（ａ）は係止位置における布押え装置の正面図
である。（ｂ）は解除位置における布押え装置の正面図
である。FIG. 2A is a front view of the cloth presser device at a locking position. (B) is a front view of the cloth pressing device in the release position.
【図３】（ａ）は縫製開始前に押え上げを厚布出入位置
に操作したときの状態を示す説明図である。（ｂ）は縫
製開始前に押え上げを縫製位置に操作して下降された布
押え部材の布送り込み側が加工布を押圧した状態を示す
説明図である。（ｃ）は縫製開始に伴って布押え部材の
係止が解除されたときの状態を示す説明図である。FIG. 3A is an explanatory diagram showing a state when a presser foot is operated to a thick cloth in / out position before starting sewing. (B) is an explanatory view showing a state in which the presser foot is moved to the sewing position before starting sewing, and the cloth feed side of the cloth presser member that has been lowered presses the work cloth. (C) is an explanatory view showing a state when the lock of the cloth presser member is released with the start of sewing.
【図４】（ａ）は縫製中に布押え部材の布送り込み側が
極端に上がるような段差があるときの状態を示す説明図
である。（ｂ）は縫製を中断して押え上げを厚布出入位
置に操作したときの状態を示す説明図である。（ｃ）は
押え上げを縫製位置に操作したときの状態を示す説明図
である。FIG. 4A is an explanatory view showing a state when there is a step such that the cloth feeding side of the cloth pressing member is extremely raised during sewing. (B) is an explanatory view showing a state when sewing is interrupted and the presser foot is moved to the thick cloth loading / unloading position. (C) is an explanatory view showing a state when the presser foot lifter is operated to the sewing position.
【図５】（ａ）は縫製開始前に押さえ上げを縫製位置に
操作して下降された布押さえ部材の布送り込み側が下降
布を押厚した状態を示す説明図である（布厚の変化が無
い場合）。（ｂ）は縫製開始に伴って布押さえ部材の係
止が解除されたときの状態を示す説明図である（布厚の
変化がない場合）。FIG. 5A is an explanatory view showing a state in which the cloth feeding side of the cloth pressing member lowered by operating the presser up to the sewing position before the start of sewing presses the descending cloth (the change in cloth thickness is If not). (B) is an explanatory view showing a state when the lock of the cloth pressing member is released with the start of sewing (when there is no change in cloth thickness).
【図６】段部縫製後の段部が布押さえ部材の布送り出し
側へ抜けた状態を示す。FIG. 6 shows a state in which the stepped portion after sewing the stepped portion is pulled out to the cloth feeding side of the cloth pressing member.
【図７】従来技術のミシンの布押え装置の正面図であ
る。FIG. 7 is a front view of a conventional cloth pressing device for a sewing machine.
９ 押え棒 ２３ 布押え部材 ２３ａ 被係合部 ２３ｂ 押圧部 ２７ ピン ２９ ロックレバ ２９ａ 凹部 ２９ｂ 孔 ３３ ノッチ板 ３３ａ 山形状部 ３５ 布検知レバー 9 Presser bar 23 Cloth pressing member 23a Engagement part 23b Pressing part 27 pin 29 Lock lever 29a Recess 29b Hole 33 Notch plate 33a Crest part 35 Cloth detection lever
Claims (2)
え棒と、前記押え棒又はその押え棒に連結された部材に
回動可能に支持され、ミシンベッド面に載置された加工
布を押圧するための布押え部材とを有するミシンの布押
え装置において、 前記布押え部材に設けられた被係合部に係合可能な係合
部を有し、前記被係合部に係合して、前記ミシンベッド
面に対して布押え部材の下面が平行になるように布押え
部材を係止する係止位置と、前記被係合部から離間して
前記係止状態を解除する解除位置との間を回動可能に、
前記押え棒又はその押え棒に連結された部材に支持され
る係止部材と、 前記係止位置に前記係止部材を保持する保持手段と、 前記係止位置に保持された前記係止部材と連結するよう
に設けられ、縫製開始にともなって送られる布と係合す
ることによって、前記係止部材を前記解除位置側へ回動
する解除手段とを備えたことを特徴とするミシンの布押
え装置。1. A presser bar movably supported on a sewing machine frame and a work cloth rotatably supported by the presser bar or a member connected to the presser bar and placed on a sewing machine bed surface. In a cloth pressing device for a sewing machine having a cloth pressing member for pressing, an engaging portion engageable with an engaged portion provided in the cloth pressing member, the engaging portion being engaged with the engaged portion. Then, a locking position for locking the cloth pressing member so that the lower surface of the cloth pressing member is parallel to the sewing machine bed surface, and a release for releasing the locking state by separating from the engaged portion. It is possible to rotate between the position and
A locking member supported by the presser bar or a member connected to the presser bar, holding means for holding the locking member in the locking position, and the locking member held in the locking position A cloth presser for a sewing machine, which is provided so as to be connected to the sewing machine, and includes release means for rotating the locking member to the release position side by engaging with cloth fed at the start of sewing. apparatus.
除位置との間の所定の位置を境界として前記係止部材を
両位置に付勢することを特徴とする請求項１記載のミシ
ンの布押え装置。2. The sewing machine according to claim 1, wherein the holding means urges the locking member to both positions with a predetermined position between the locking position and the releasing position as a boundary. Cloth presser device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6253595A JPH08112472A (en) | 1994-10-19 | 1994-10-19 | Cloth pressure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6253595A JPH08112472A (en) | 1994-10-19 | 1994-10-19 | Cloth pressure of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08112472A true JPH08112472A (en) | 1996-05-07 |
Family
ID=17253570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6253595A Pending JPH08112472A (en) | 1994-10-19 | 1994-10-19 | Cloth pressure of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08112472A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012066903A1 (en) * | 2010-11-17 | 2012-05-24 | 株式会社ジャガーインターナショナルコーポレーション | Fabric presser device of a sewing machine |
-
1994
- 1994-10-19 JP JP6253595A patent/JPH08112472A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012066903A1 (en) * | 2010-11-17 | 2012-05-24 | 株式会社ジャガーインターナショナルコーポレーション | Fabric presser device of a sewing machine |
| JP5330605B2 (en) * | 2010-11-17 | 2013-10-30 | 株式会社ジャガーインターナショナルコーポレーション | Sewing cloth presser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2885530B2 (en) | Overlock sewing machine conversion device for overlock sewing machine | |
| US7918171B2 (en) | Threading device of sewing machine | |
| JPH0679628B2 (en) | Button sewing machine | |
| JP2550836Y2 (en) | Sewing machine presser foot device | |
| JP4468550B2 (en) | Thread trimming device for eyelet sewing machine | |
| JPH08112472A (en) | Cloth pressure of sewing machine | |
| JPS62103169A (en) | Paper-feeding mechanism for printer | |
| JPH05153Y2 (en) | ||
| JPH0632730B2 (en) | Thread tension setting sewing machine | |
| US5046437A (en) | Device in a button sewing machine for maintaining looseness in needle thread while preventing the thread from being pulled out of the sewing needle | |
| US7568441B2 (en) | Embroidery unit attachable to sewing machine bed | |
| JP7031475B2 (en) | Presser device | |
| JP2917477B2 (en) | Sewing machine with threading device | |
| JP4195532B2 (en) | Sewing machine thread trimmer | |
| JP4420050B2 (en) | Sewing machine presser and sewing machine | |
| US4393794A (en) | Sewing machine with needle dropping hole changing control device | |
| JP3448116B2 (en) | Cloth foot for step sewing | |
| JP2970067B2 (en) | Sewing machine and embroidery frame feeder | |
| JPH0117262Y2 (en) | ||
| JPS5836386Y2 (en) | Sewing machine presser foot device | |
| JP2001000765A (en) | Sewing machine | |
| JP2871206B2 (en) | Overlock sewing machine with adjustable overlock width | |
| JP4999662B2 (en) | Sewing machine cloth feed control device | |
| JPH049993Y2 (en) | ||
| JPH05115637A (en) | Button-holding device for button-fastening sewing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20040206 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20040212 |
|
| LAPS | Cancellation because of no payment of annual fees |